Long fiber breakage simulations for injection molded fiber-reinforced thermoplastics: processing from screw to part

Huan-Chang Tseng, Yuan-Jung Chang, Chia-Hsiang Hsu, and Rong-Yeu Chang

PPS

Long fiber reinforced thermoplastics, with reducing costs and vehicle weight, continue growth in automotive. Their mechanical properties including strength, stiffness, and impact are strongly influenced by a length distribution of breakage fiber. Recently, the Phelps-Tucker fiber...

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Three dimensional auto meshing flexibility CAE analysis for microchip encapsulation

Lung-Chi Chen, Chih-Chung Hsu, Dar-Der Hsieh, Rong-Yeu Chang

IMPACT

he development of microchip product is complicated due to the complexity of material properties while processing. This process contains the interconnection between microchips and other electronics (so-called wire bonding), curing phenomenon of thermoset material, and...

Novel 3D-CAE technology for powder-binder separation of metal injection molding

Huan-Chang Tseng, Yuan-Jung Chang, Chia-Hsiang Hsu, Rong-Yeu Chang

模具公會

Differing metallurgy, metal injection molding (MIM) is one of the effective manufacturing tools to rapidly produce intricate metal components. MIM feedstock consists of mixing metal powders and binder, injection molding to create green part with grey, de-binding to remove...

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Prediction of gloss surface defects for metal injection molding simulation

Shun-Tian Lin, Chao-Zong Ruan, Huan-Chang Tseng, Chao-Tsai(CT) Huang, Hsien-Sen Chiu, Cheng-Han Tsai, Chia-Hsiang Hsu

模具公會

Metal Injection Molding (MIM) that is a novel advanced manufacturing technology with a complex feedstock consisting of powder and binder can rapidly produces various high precision metal components. However, the MIM feedstock, including metal power and polymer binder...

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Simulation of the unbalanced flow behavior of the core material in co-injection multi-cavity molding

Ying-Mei Tsai, Jackie Yang, Wei-Lun Liao, Hsiu-Chun Lin, Chao-Tsai Huang

模具公會

Co-Injection Molding, one of Multi-Component Molding (MCM), is an advanced manufacturing technology to combine the advantages of two materials in the product by a single injection mechanism. The first-injected component is the skin material and while the later-injected is...

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The study on dynamic behaviors and optical quality for circular fisheye using injection compression molding

Heng-Tseng Liao, Ying-Mei Tsai, and Chao-Tsai Huang, Ming-Yan Yu, Yi-Jen Yang and Chung-Ching Huang

模具公會

In recent years, the applications of plastic optical component are extensive. As a result, the demand of precision plastic lens increases constantly. Conventional injection molding (CIM) and injection compression molding (ICM) are two practical approaches for mass production...

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3D numerical simulation analysis and experimental visualization of resin transfer molding process

Hsun Yang, Chih-Chung Hsu, Bai-Jian Wei, Yuan Yao; Rong-Yeu Chang

模具公會

Resin transfer molding has been widely used in manufacture of aircraft and automotive parts. The most important reason is that it can make light, high- strength products. However, due to this process is inside the mold and complex fiber mats, it is very difficult to predict resin flow...

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Simulation of fiber orientation and fiber length in injection molding of long fiber-reinforced polypropylene composites

Huan-Chang Tseng, Yuan-Jung Chang, Chia-Hsiang Hsu, Rong-Yeu Chang, Goto Masato

JSPP

Long fiber reinforced thermoplastic composites continue to show strong growth in automotive application, as replace metal. Their benefit is superior mechanical properties of strength, stiffness, and impact, which are primarily influenced by fiber orientation and fiber length...

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Investigation of process induced dynamic behaviors and optical quality for optical lens using injection compression molding

Ying-Mei Tsai, Heng-Tseng Liao, Chao-Tsai (CT) Huang, Rong-Yeu Chang, Ming-Yan Yu, Yi-Jen Yang, Chung-Ching Huang, Hisahiro Tanaka

JSPP

Injection compression molding (ICM) process can bring a lot of advantages to enhance the product quality. However, ICM also introduces more parameters increasing the complexity of molding. In this study, firstly conventional injection molding (CIM) and ICM processes on the...

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Investigation on warpage and its mechanism in co-injection molding

Che-Ping Lin, Shih-Po Sun, Chao-Tsai Huang, and Shi-Chang Tseng

ANTEC

With the growing use of co-injection molding process, it becomes essential to understand skin/core material distribution in the cavity for ensuring the quality of final product. In this study, warpage issue will be examined numerically and systematically by process effect and...

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Progress on fiber concentration for injection molding simulation of fiber reinforced thermoplastics

Huan-Chang Tseng, Tzu-Chang Wang, Yuan-Jung Chang, Chia-Hsiang Hsu, and Rong-Yeu Chang

ANTEC

With the growing use of co-injection molding process, it becomes essential to understand skin/core material distribution in the cavity for ensuring the quality of final product. In this study, warpage issue will be examined numerically and systematically by process effect and...

If you are interested to read more, please contact Moldex3D for more information.

Prediction of powder concentration for filling simulation of metal injection molding

Huan-Chang Tseng, Yuan-Jung Chang, Chia-Hsin Tien, Chia-Hsiang Hsu

ANTEC

Mechanical properties of fiber-reinforced thermoplastic products have a deep dependence upon flow-induced variations in fiber structure, involving fiber orientation, fiber length, and fiber concentration. However, few numerical studies have been done on fiber concentration to date...

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A filling behavior study in resin transfer molding process through 3D simulation and experimental visualization

Hsun Yang, Wen-Yen Chang,Chung-Yi Huang, Chih-Chung Hsu, and Rong-Yeu Chang

ANTEC

A full 3D finite volume analysis system has been developed to simulate a Metal Injection Molding (MIM) filling process. In the MIM industry, the so-called black lines are frequently observed in the surface inspection of the final sintering products. Such a critical appearance...

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Numerical investigation and experimental validation for wax pattern formation through injection in investment casting

Wen-Yen Chang, Chao-Tsai Huang, Chih-Kang Lee, and Rong-Yeu Chang

ANTEC

This study focuses on the filling behavior of resin transfer molding (RTM) process. By the visualization system, the flow patterns of resin during transfer molding were observed and the data were used to estimate the permeability tensor. In addition three-dimensional simulation...

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The study of dynamic behaviors and optical quality for fisheye lens using injection compression molding

Ying-Mei Tsai, Chao-Tsai Huang, Rong-Yeu Chang, Ming-Yan Yu, Yi-Jen Yang, and Chung-Ching Huang

ANTEC

Lost wax process is widely used in metal casting to manufacture high precision metal products. However, since it covers a lot of procedures, high precision quality is very difficult to obtain via conventional trial-and-error method. In this study, we have proposed numerical method to...

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Effect of powder size on powder-binder phase separation for metal injection molding simulations

Huan-Chang Tseng, Yuan-Jung Chang, Chia-Hsiang Hsu, and Rong-Yeu Chang

PPS

In the Metal Injection Molding (MIM) industry, the so-called black lines are frequently observed in the surface inspection of the final sintering products. Such a critical appearance defect is attributed to powder-binder phase separation for academia. Recently, we have performed...

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Through fiber orientation investigation to visualize compression molding

Chih-Chung Hsub, Hsien-Sen Chiu, Chao-Tsai Huang, and Rong-Yeu Chang

PPS

In a pure compression process, polymer melt is compressed to flow by moving the movable platen of the mold to complete melt filling. Compression of the melt is then continued by the pressure exerted from the mold wall of the core side. This process provides a more uniform...

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Co-injection molding simulation conecerning core layer fiber orientation and 1-2-1 process

Shih-Po Sun, Chih-Chung Hsu, Chao-Tsai Huang, Kuo-Chou Huang, and Shi-Chang Tseng

PPS

We presented the experimental and numerical simulation results concerning the core layer fiber orientation and the 1-2-1 process for the co-injection or sandwich molding steps. The fiber reinforced core did not exhibit strong fiber orientation. Since the core material could not move...

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Cooling effects study by considering a turbulence model in injection molding

Fu-Hung Hsua, Bo-Han Wu,Chao-Tsai Huang, and Rong-Yeu Chang

PPS

Cooling stage is critical in injection molding process. A well designed cooling system can effectively shorten cycle time and improve product quality. Three-dimensional cooling analysis has been embedded in injection molding simulation which provides a useful tool for cooling...

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Foaming morphology control of microcellular injection molded parts with gas counter pressure and dynamic mold temperature control

Tai-Yi Shiu, Chao-Tsai Huang, Rong-Yu Chang, Shyh-Shin Hwang

PPS

Microcellular injection molding process is a promising solution for products with special requirements such as weight reduction, extra thin wall, high dimensional stability, clamping force reduction, etc. Despite microcellular foaming application used in reciprocating screw...

If you are interested to read more, please contact Moldex3D for more information.

Sandwich injection molding: core breakthrough and flow imbalance studies

Shih-Po Sun; Lung-Chi Chen; Chih-Chung Hsu; Chao-Tsai Huang; Kuo-Chou Huang; Shi-Chang Tseng

模具公會

Due to cost reduction, waste reuse, and enhanced product performance, applications of sandwich molding process become wider and wider. However, two important defects, core breakthrough in a thin-walled part and the flow imbalance in a multi-cavity mold, encountered...

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Application of CAE simulation technology for microstructure analysis of microcellular injection molded parts

Tai-Yi Shiu; Yuan-Ping Chen; Chao-Tsai Huang; Rong-Yeu Chang; Shyh-Shih Hwang

模具公會

The application of microcellular injection molding can help us to save material and lighten the mass of molded parts. Moreover, it would not weaken the strength of product but improve the warp problem. In this article, the comparison between the cellular microstructure of molded...

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Three dimensional compression molding simulation for wafer level packaging

Chih-Chung Hsu, Wen-Hsin Weng, Hsien-Sen Chiu, Rong-Yeu Chang

IMPACT

Wafer-Level Packaging (WLP) refers to the technology of packaging an integrated circuit at wafer level with the advantage of miniaturizing package size, reducing material cost, and fastening throughput. Embedded Wafer Level Packaging (EMWLP) is one of WLP technologies..

Simulation and analysis of conformal cooling optimization in injection molding

Fu-Hung Hsu, Sue-Hsien Lin, Chao-Tsai Huang, Rong-Yeu Chang

模具公會

Generally in the injection molding system, the mold for conformal cooling system requires more time and financial resources when compared to a traditional system. An optimal design validated with a three-dimensional CAE tool can greatly assist in the design and construction...

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True 3D numerical simulation in compression molding

Chih-Chung Hsu, Hsien-Sen Chiu, Rong-Yeu Chang

ANTEC

Cooling plays an important role in injection molding process. A well designed cooling system can effectively shorten cycle time and improve product quality as well. Nowadays, three dimensional cooling analysis has been applied in injection molding simulation. With this...

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Using iterative fluid-structure interaction solution to simulate core simulate core deflection problems in injection molding

Tzu-Cheng Wang, Yang-Kai Lin, Yuan-Jung Chang, Hsien-Tzu-Cheng Wang; Yang-Kai Lin; Yuan-Jung Chang; Hsien-Sen Chiu; Chia-Hsiang Hsu; Shi-Chang Tseng

ANTEC

The objective of this study is to develop a simulation tool of compression molding (CM) process to get a comprehensive understanding of the whole process. We primarily focused on numerical simulation of the flow during mold closure in compression molding process...

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Core breakthrough and fiber orientation simulation in the sandwich molding process

Shih-Po Sun, Chih-Chung Hsu, Chao-Tsai Huang, Kuo-Chou Huang, and Shi-Chang Tseng

JSPP

We presented the numerical simulation and experimental results of the core breakthrough phenomenon encountered in a sandwich molding process. A spiral mold was used to study the flow advancement and fiber orientation of the core layer. The part thickness largely...

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Three-dimensional fiber orientation study during compression molding

Chih-Chung Hsu, Hsien-Sen Chiu, Rong-Yeu Chang, and Chia-Hsiang Hsu

JSPP

Compression molding is one of the original processes for manufacturing plastic parts, there are still some characteristics and phenomena which affect yield rate and we don’t have deep knowledge of, like fiber orientation and void generation. Today taking advantage of powerful...

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Morphology of microcellular injection foaming with gas counter pressure and dynamic mold temperature control

Tai-Yi Shiu, Chao-Tsai Huang, Rong-Yu Chang, Shyh-Shin Hwang, Sean Wang

JSPP

Microcellular injection foaming process has increasingly draw attention to plastic molding industries. Microcellular foaming provides solutions for needs of weight reduction, extra thin wall, high dimensional stability, clamping force reduction, etc. Despite microcellular foaming...

If you are interested to read more, please contact Moldex3D for more information.

Cooling efficiency and mechanism study by using a turbulence model in injection molding

Fu-Hung Hsu, Bo-Han Wu, Chao-Tsai Huang, Rong-Yeu Chang, Cheng-Han Tsai

JSPP

Injection molding process has been applied in various product manufacturing. For this process, the cooling stage is critical in injection molding process. A well designed cooling system can effectively shorten cycle time and improve product quality. But in reality, the cooling...

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A novel method to predict fluid/structure interaction in ic packaging

Chih-Chung Hsu, Tzu-Chang Wang, Yen-Chi Chen, Yang-Kai Lin

IMPACT

This paper reports a perspective investigation of computational modeling of fluid-structure interaction (FSI) in molded integrated-circuit(IC) packaging. The investigation is carried out through two aspects, respectively on interaction between the fluid and structure in the...

Forming morphology of microcellular injection molded parts - simulation and experimental characterization

Tai-Yi Shiu, Yuan-Jung Chang, Chao-Tsai Huang, Chia-Hsiang Hsu, Rong-Yu Chang, Shyh-Shin Hwang

ANTEC

We present the morphological study of microcellular injection molded product using amorphous and semicrystalline polymers with nitrogen. The cellular structure and cell distribution probed by scanning electron microscope (SEM) were compared with three...

If you are interested to read more, please contact Moldex3D for more information.

Sandwich injection molding: core breakthrough and flow imbalance studies

Shih-Po Sun, Chih-Chung Hsu, Chao-Tsai Huang, Kuo-Chou Huang, and Shi-Chang Tseng

ANTEC

We present the morphological study of microcellular injection molded product using amorphous and semicrystalline polymers with nitrogen. The cellular structure and cell distribution probed by scanning electron microscope (SEM) were compared with three...

If you are interested to read more, please contact Moldex3D for more information.

The effects of turbulent flow on cooling efficiency in injection molding

Fu-Hung Hsu, Hiroshi Amioka, Chao-Tsai Huang, Kazuho Morimoto, Rong-Yeu Chang

ANTEC

We presented numerical simulations concerning two important defects encountered in the sandwich molding process: the core breakthrough in a thin-walled part and the flow imbalance in a multi-cavity mold. The part thickness largely determines how far the skin melt front...

If you are interested to read more, please contact Moldex3D for more information.

Numerical prediction of powder concentration for mold filling simulations of powder injection molding

Huan-Chang Tseng, Yuan-Jung Chang, Chia-Hsiang Hsu, and Rong-Yeu Chang

PPS

Powder injection molding (PIM) is an advanced manufacturing technology for use in a diverse range of industries for producing precision metallic or ceramic parts. PIM is essentially an extension of the conventional injection molding process (CIM) of thermoplastic materials...

If you are interested to read more, please contact Moldex3D for more information.

3D simulation of underfill encapsulation in semiconductor processing

Chih-Chung Hsu, Hsien-Sen Chiu, Rong-Yeu Chang

IMPACT

Semiconductor industry is the leader of industries in Taiwan for more than ten years. The development of microchip product is pretty complicated due to the complexity of material property while processing. Recently it becomes more arduous, because the trend of customer...

If you are interested to read more, please contact Moldex3D for more information.

The effects of conformal cooling channel design in injection molding

Fu-Hung Hsu, Kent Wang, Chao-Tsai Huang, Rong-Yeu Chang

JSPP

In the injection molding industry, most advanced technologies developed during the last few decades focused on issues such as minimizing manufacturing cost and improving product quality. Conformal cooling is one of those technologies which can reduce cooling time and...

If you are interested to read more, please contact Moldex3D for more information.

Cooling system effects in a real hot runner system using a 3D numerical method

Fu-Hung Hsua, Bo-Han Wu, Chao-Tsai Huang, and Rong-Yeu Chang

PPS

Hot runner system is widely used nowadays in injection molding. However, the system is quite complex including many components. Thus, it is usually not easy to simulate its mechanism in a full scheme. There are several critical issues in a hot runner system such as temperature...

If you are interested to read more, please contact Moldex3D for more information.

Long fiber orientation prediction in center-gated disk of injection molding

Huan-Chang Tseng, Yuan-Jung Chang, Tzu-Chang Wang, Chia-Hsiang Hsu, and Rong-Yeu Chang

JSPP

Orientation prediction of long fiber reinforced thermoplastics is very urgently required at present, especially for the automotive industry. Recently, the iARD-RPR (Improved Anisotropic Rotary Diffusion Model combined with Retarding Principal Rate) Model that is a new...

If you are interested to read more, please contact Moldex3D for more information.

Investigation into melt temperature distribution in hot runner system

Tzu-Chau Chen, Yan-Chen Chiu, Wei-Da Wang, Chao-Tsai Huang, Cheng-Li Hsu, Chen-Yang Lin, Lung-Wen Kao

JSPP

Hot runner technology has been widely applied to plastic injection parts to improve ceratin molding issues with the use of traditional colder runners. However, the mechanism behind is so complex that some critical issues still exist. For example, the temperature inappropriate...

If you are interested to read more, please contact Moldex3D for more information.

A study of molding injection process optimization for 42-inch-screen-rim

Hsinn-Jyh Tzeng, Yan-Syuan Gan, Kuang-Kuo Wu, Chung-Ching Cheng

模具公會

In recent, an advanced development in plastic production processing technology is various, especially for injection molding. Key factors of the injection that include the selection of materials, the condition of operator, and the design of mold are complex. The CAE software is...

If you are interested to read more, please contact Moldex3D for more information.

Dynamic foaming behavior of microcellular injection molding process

Tai-Yi Shiu, Yuan-Jung Chang, Chao-Tsai Huang, Chia-Hsiang Hsu, Rong-Yu Chang

JSPP

Cell nucleation and growing behavior is correlated and is a competitive mechanism. End product characteristics of microcellular injection molding are deeply affected by the dynamic foaming behavior. In this study, we carry out the recent development of threedimensional...

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Fluid-structure interaction simulation for core deflection phenomena in injection molding

Tzu-Cheng Wang; Yang-Kai Lin; Yuan-Jung Chang; Hsien-Sen Chiu; Chia-Hsiang Hsu; Shi-Chang Tseng

模具公會

The fluid-structure interaction (FSI) issues for applications in injection molding process have been widely discussed recently. Common structural deformation defects are usually caused by non-uniform pressure distribution within the cavity during filling stage. At the same time, the...

If you are interested to read more, please contact Moldex3D for more information.

Prediction of orientation distribution for long fiber reinforced thermoplastics in center-gated disk flow

Huan-Chang Tseng, Yuan-Jung Chang, Tzu-Chang Wang, Chia-Hsiang Hsu, and Rong-Yeu Chang

ANTEC

Gas-assisted injection molding has many advantages for part surface quality. The hollowed core of the part is a very important property for understanding gas-assisted injection molding. In this study, the spiral tube mold was utilized in Gas-assisted injection molding process...

If you are interested to read more, please contact Moldex3D for more information.

Integration of injection molding and structure simulation for part lifecycle and mold deformation analyses

Yu-Chih Liu, Chao-Tsai Huang, Tzu-Chau Chen, Tsung-Min Su

ANTEC

Long fiber-reinforced thermoplastic (FRT) composites widespread use in automotive industrial fabrication is more of a requirement than short FRTs. Mechanical properties of FRT products are dominated upon fiber orientation within the part. Recently, we proposed a new mathematic..

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Dynamic behavior and experimental validation of cell nucleation and growing mechanism in microcellular injection molding process

Tai-Yi Shiu, Yuan-Jung Chang, Chao-Tsai Huang, David Hsu, Rong-Yu Chang

ANTEC

Nowadays, with the increasing variety, complexity, and dimensional accuracy required for plastic products, CAE tools have been widely used in solving product design and manufacturing issues. However, lacking the consideration of process-induced effects on material properties...

If you are interested to read more, please contact Moldex3D for more information.

The skin/core material distribution of a co-injection process: the effect of processing conditions and material selection

Shih-Po Sun, Chih-Yu Hsu, Chao-Tsai Huang, Kuo-Chou Huang, and Shi-Chang Tseng

ANTEC

We present the recent development of threedimensional prediction of dynamic behavior of cell nucleation and growing mechanism, and the effect of nucleation-growing competition in microcellular injection molding process. Simulations of microcellular foaming process of...

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Numerical visualization on cooling mechanism for conformal cooling system in injection molding

Fu-Hung Hsu, Hung-Chou Wang, Wei-Da Wang, Chao-Tsai Huang, Rong-Yeu Chang

ANTEC

With the growing use of co-injection molding process, an understanding of skin/core material distribution in the cavity is essential. We presented numerical simulations concerning factors including filling ratio, material viscosity, and injection rate. Both core penetration depth and...

If you are interested to read more, please contact Moldex3D for more information.

Temperature investigation in real hot runner system using a true 3D numerical method

Tzu-Chau Chen, Yan-Chen Chiu, Wei-Da Wang, Chao-Tsai Huang, Cheng-Li Hsu, Chen-Yang Lin, Lung-Wen Kao

ANTEC

In an injection molding process, cooling time usually dominates the whole cycle time. Therefore, decreasing cooling time can help save manufacturing cost. Cooling system design is one of a crucial factor to reduce cooling time. However, by using traditional molding...

If you are interested to read more, please contact Moldex3D for more information.

Comparison of dynamic foaming behavior in microcellular injection molding process from simulation and experiment

Tai-Yi Shiu, Yuan-Jung Chang, Chao-Tsai Huang, Chia-Hsiang Hsu, Rong-Yu Chang, Shyh-Shin Hwang

PPS

Microcellular injection molding process is a promising solution for products with special requirements such as weight reduction and extra thin wall. Despite microcellular foaming application used in reciprocating screw injection molding machine was built more than...

If you are interested to read more, please contact Moldex3D for more information.

Investigation on warpage behavior of dvd-disk in injection compression molding

Shia-Chung Chen, Guan-Hua Lee, Chia-Yen Tseng, Tzu-Chau Chen, Hsien-Sen Chiu, Chih-Chung Hsu

ANTEC

In this study, the Injection Compression Molding (ICM) process was simulated with a DVD-disk model using the Moldex3D-ICM module. An ICM experiment was also conducted to verify the simulation results. The effects of the process parameters such as compression force...

If you are interested to read more, please contact Moldex3D for more information.

3D simulation and experimental study in determining rheological properties for high speed injection molding process

Chih-Chung Hsu, Chao-Tsai Huang, Hsien-Sen Chiu, Rong-Yeu Chang, Shia-Chung Chen

PPS

Today’s injection molding machine manufacturers are experiencing increasing demand for small and thin walled parts for high speed molding technology from the electronics and automotive markets. With the use of high speed injection molding process, the shear strain...

If you are interested to read more, please contact Moldex3D for more information.

Simulations of three dimensional fluid penetrations for water assisted injection molded parts

Chih-Chung Hsu, Fu-Hung Hsu, Hsien-Sen Chiu, Rong-Yeu Chang

PPS

Water assisted injection molding (WAIM) is one of the latest and most promising developments in “assisted” injection molding. Because of similarities between the two processes, both provide the same benefits due to the light weight, relatively lower resin cost per part and faster..

If you are interested to read more, please contact Moldex3D for more information.

A numerical prediction of wire crossover applying to microchip encapsulation

Ya-Yuen Chou, Hsien-Sen Chiu, and Jyh-Jer Jwo

IMPACT

Microchip encapsulation is of dominance in the packaging of Plastic-Encapsulated Microelectronics (PEM). During fabrication of the encapsulation, the sweep deflection of wire bond caused by compound flows obviously results in wire crossover and shorting. Thereby...

Simulation of the runner and gate design for eyeglass frame

Chia-Ying Liu,Hung-Wei Hsiao, Chiu-Hui Tu, Nai-ren Hsiao

模具公會

The design of the flow path and the location of the injection site are key determinants of the length of filling. Moreover, the site of injection is crucial to the evenness and quality of the end product. If the duration of filling exceeds optimal length, the rate of production will be...

If you are interested to read more, please contact Moldex3D for more information.

Application of simulation analysis for optimizing automotive trim process

Hsinn-Jyh Tzeng, Cheng-Lung Lee, Jen-Chou Hsiung, Nai-Jen Hsiao

模具公會

Warpage is one of the most crucial problems during the injection molding process, for its great effect on product quality. However, warpage and non-uiform shrinkage are resulted by many molding processing factors. This paper studies a decorative plate of the car for the influence...

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Investigation of the flow behavior of fiber-reinforced melt in interdigital wave runner by simulation analysis implemented with field synergy principle

Shiuh-Ming Chang, Yao-Sheng Yang, Chi-Ching Cheng, Hung-Pin Chen, Nai-Jen Hsiao

模具公會

In this study, we will focus on the bipolar plate of Proton Exchange Membrane Fuel Cell (or PEMFC). Two materials are used in this study, which are PA6 (Polyamide,Nylon6) TECHNYL C217 Rhodia and PA6 (Polyamide, Nylon6 ) TECHNYL C218 V40 Rhodia (+40% Glass Fiber)...

If you are interested to read more, please contact Moldex3D for more information.

The investigation of flow balance in small size ic packaging by simulation analysis

Shiuh-Ming Chang, Yao-Sheng Yang, Chi-Ching Cheng, Hung-Pin Chen, Jia-Siang Chen, Nai-Jen Hsiao

模具公會

Applying CAE in simulation analysis of small size IC packaging has been developed for years. However, the prediction of the flow behavior in IC packages is still a huge challenge due to its geometric limitations. In this paper, the field synergy principle is implemented for the...

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Residual stress effect on electronic connector breaking by using CAE technique

Alan Liao, Alice Lin, Marvin Wang

模具公會

With the progress in molding technology, high quality, precision, miniaturization and lightweight have become major trend in 3C industry recently. It implies that parts, such as electronic connector in 3C products, are demanded much lighter and smaller as well. And meanwhile...

If you are interested to read more, please contact Moldex3D for more information.

Numerical and experimental study on optical property for injection compression parts

Tzu-Chau Chen, Hsien-Sen Chiu, Yuan-Jung Chang, Chun-Hsiang Wang, CT Huang, Min-Tsung Kao, Shi-Chang Tseng, and Rong-Yeu Chang

JSPP

Injection compression molding (ICM) process has been applied for producing optical parts. In this study, a real 3D numerical method based on finite volume approach has been used to simulate melt behavior in ICM process. The flow-induced residual stress in ICM process can...

If you are interested to read more, please contact Moldex3D for more information.

Three dimensional water assisted injection molding: a numerical simulation and experimental validation

Fu-Hung Hsu, Chih-Chung Hsu, Yi-Chuan Wu, Chun-Hsiang Wang, Chao-Tsai Huang, Rong-Yeu, Chang, Shih-Jung Liu

JSPP

Water-assisted injection molding (WAIM) is one of the special injection molding methods beyond traditional methods. The concept is developed from gas-assisted injection molding (GAIM); however, WAIM has some benefits over GAIM such as shorter cycle time and lower...

If you are interested to read more, please contact Moldex3D for more information.

An improved folgar–tucker model for transient behavior of orientation kinetics in fiber suspension

Huan-Chang Tseng, Yuan-Jung Chang, Chia-Hsiang Hsu, and Rong-Yeu Chang

ANTEC

With the development of variotherm mold temperature control, people use this technique to fit the special demands in injection molding. Not only the present mold temperature settings, but also the temperature distribution of the previous state will affect mold temperature. Especially...

If you are interested to read more, please contact Moldex3D for more information.

Three dimensional visualization of water penetration and melt behavior in water assisted injection molding

Fu-Hung Hsu, Chih-Chung Hsu, Yi-Chuan Wu, Chao-Tsai Huang, Rong-Yeu Chang, Shih-Jung Liu

模具公會

Water-assisted injection molding (WAIM) is one of the special injection molding methods beyond traditional methods. The concept was developed from gas-assisted injection molding (GAIM); however, WAIM has some benefits over GAIM such as shorter cycle time and lower...

If you are interested to read more, please contact Moldex3D for more information.

Three-dimensional simulation of gas-assisted injection molding on ratio of hollowed core thickness

Chih-Chung Hsu, Rong-Yeu Chang, Ting-Yi You, Hsien-Sen Chiu, Tzu-Chau Chen, Chao-Tsai Huang

模具公會

Gas-assisted injection molding has bring a development of breakthrough in the traditional plastic industry. Since the gas cores out a network of hollow channels throughout the mold cavity, this process can produce significant cost saving of plastic and energy. However, While...

If you are interested to read more, please contact Moldex3D for more information.

The integration of CAE and conformal cooling design on improving thermal balance of mold and cooling cycle

Alvin Ho, Alice Lin, Marvin Wang

模具公會

Thermal balance of molds has always been the priority consideration of plastic injection molding because it is involved with melt flow, shrinkage, cycle time and surface quality. Out of all these factors, cycle time is concerned most in industry due to its influence on product...

If you are interested to read more, please contact Moldex3D for more information.

Study on rheological behavior of ultra high speed injection molding

Shia-Chung Chen, Anton Winarko, Hsin-Shu Peng, Chih-Chung Hsu, Tzu-Chau Chen, Chao-Tsai Huang

ANTEC

The famous Folgar-Tucker (FT) mathematic model has been habitually used to determine the evolution of the orientation state of fiber suspension. A critical problem with the practical processing flow of fibers is, however, that the predicted transient rate of orientation with...

If you are interested to read more, please contact Moldex3D for more information.

The injection compression effects on the optical property behavior for injection parts

Tzu-Chau Chen, Hsien-Sen Chiu, Yuan-Jung Chang, CT Huang, Min-Tsung Kao, Shi-Chang Tseng, Rong-Yeu Chang

ANTEC

In this study, the Injection Compression Molding (ICM) process was simulated with a DVD-disk model using the Moldex3D-ICM module. An ICM experiment was also conducted to verify the simulation results. The effects of the process parameters such as compression force...

If you are interested to read more, please contact Moldex3D for more information.

Investigation on various variotherm processes in injection molding

I-Sheng Hsieh, Cheng-Han Tsai, Chao-Tsai Huang, Chao-Chang Tang, Kin-Fu Lu

ANTEC

In recent years, to eliminate defects and improve the product quality, many variotherm processes have been proposed and commercialized in injection molding. However, what the true function is for each technology and how the efficiency is from one technology to the other..

If you are interested to read more, please contact Moldex3D for more information.

Three dimensional visualization of water penetration and melt behavior in water assisted injection molding

Fu-Hung Hsu, Chih-Chung Hsu, Yi-Chuan Wu, Chao-Tsai Huang, Rong-Yeu Chang, Shih-Jung Liu

ANTEC

Solidified skin layer problem during filling stage usually appears due to the very fast polymer melt heat transfer to the mold while doing thin wall injection molding. Ultra high speed injection is one of the injections molding technology which can be used to solve this problem. In this...

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Three-dimensional modeling of gas penetrations during gas-assisted injection molding

Chih-Chung Hsu, Hsien-Sen Chiu, Wen-Hsien Yang, Rong-Yeu Chang

ANTEC

Although Gas-Assisted Injection Molding (GAIM) has gained acceptance in eliminating sink marks and preventing warpage in the plastic industry, many problems are still encountered for the complicated gas-melt flow interactions. In this study, a full 3D numerical approach is..

If you are interested to read more, please contact Moldex3D for more information.

Simulation and verification of gas-assisted injection molding on hollowed core ratio of spiral tube

Shia-Chung Chen, Ting-Yi You, Tzu-Chau Chen, Chao-Tsai Huang, Chih-Chung Hsu

ANTEC

Injection compression molding (ICM) has been widely utilized in the manufacturing of optical parts since this molding process can improve optical property with reduced flow-induced residual stress and warpage deformation. In this study, a true 3D simulation technology based...

If you are interested to read more, please contact Moldex3D for more information.

Investigation into injection compression effects on the properties of optical parts

Tzu-Chau Chen, Hsien-Sen Chiu, Yuan-Jung Chang, Chai-Tsai Huang, Min-Tsung Kao, Shi-Chang Tseng, Rong-Yeu Chang

模具公會

Generally, injection compression molding (ICM) can provide better product quality than that of conventional injection molding (CIM) in some injection processes and products, such as micro-injection molding, less residual stress parts, and so on. To get a better understanding of ICM...

If you are interested to read more, please contact Moldex3D for more information.

Investigation of process condition effects on optical property in injection compression molding

Tzu-Chau Chen, Hsien-Sen Chiu, Yuan-Jung Chang, CT Huang, Min-Tsung Kao, Shi-Chang Tseng, Rong-Yeu Chang

PPS

Injection compression molding (ICM) has been employed in the production of optical parts since this process can improve optical property by reducing flow-induced residual stress and warpage deformation. In this study, a true 3D simulation technology based on finite volume method has been used to simulate viscoelastic behavior of melt in ICM process...

If you are interested to read more, please contact Moldex3D for more information.

Numerical simulation with 3D visualization capability in injection compression molding

Shen-Teng Hu, Hsian-Sen Chiu, Ching-Chang Chien, Chau-Kai Yu, and Rong-Yeu Chang

PPS

Injection compression molding (ICM) is an extension of conventional injection molding (CIM) by integrating a movable mold compression action. The major difference between ICM and CIM is the pressure distribution in the postfilling stage. In the packing process of CIM, additional...

If you are interested to read more, please contact Moldex3D for more information.

Melt flow behavior and the effects of gas in gas-assisted injection molding

Chih-Chung Hsu, Hsien-Sen Chiu, Wen-Hsien Yang, Rong-Yeu Chang

PPS

Although Gas-Assisted Injection Molding (GAIM) has gained acceptance in eliminating sink marks and preventing warpage in the plastic industry, many problems are still encountered for the complicated gas-melt flow interactions. As for the controlling the processing conditions...

If you are interested to read more, please contact Moldex3D for more information.

The effects of various variotherm processes and their mechanisms on injection molding

Chao-Tsai Huang, I-Sheng Hsieh, and Cheng-Han Tsai

PPS

To eliminate surface defects and improve the quality of molded parts, increasing the mold temperature is one of the solutions. Using high mold temperature can eliminate weld lines, reduce molding pressure, residual stress, clamping force and improve part surface quality...

If you are interested to read more, please contact Moldex3D for more information.

3D simulation of fine pitch underfill encapsulation

Chih-Chung Hsu, Hsien-Sen Chiu, Wen-Hsien Yang, Rong-Yeu Chang

IMPACT

The flip chip molding is much smaller than a traditional carrierbased system; the chip sits directly on the circuit board, and is much smaller than the carrier both in area and height. The short wires greatly reduce inductance, allowing higher-speed signals, and also carry heat...

The application on the decoration of molding part for tom technology

Alice Lin

模具公會

As screw rotated to push the melt forward to the nozzle in injection molding machine, the melt inject into cavity due to the pressure gradient between nozzle and cavity. In the filling stage, the pressure at gate is the highest, and the pressure at melt front is the lowest owing to the...

If you are interested to read more, please contact Moldex3D for more information.

The application of injection molding simulation on improving flow imbalance during filling in multi-cavity system

Yi-Chuan Wu

模具公會

Multi-cavities injection molding has been regarded as a way to mass production and cost down at the same time. However, even though a geometrically balanced runner is applied in multi-cavity system, the filling imbalance still happens during injection molding, which is always...

If you are interested to read more, please contact Moldex3D for more information.

Product development of blown film by using CAE technique

Kun-Sheng Liu, Kun-Lin Tsai, Meng-Chih Chen, Chao-Tsai Huang

模具公會

Blown film is one of the main manufacture methods in extrusion. In general, blown film processing will face a lot of challenges, including the material plastication, uniform melting profile, and product quality control. Specifically, the first stage of blown film is related to the...

If you are interested to read more, please contact Moldex3D for more information.

A study on prediction model of multi-performance in fresnel lens by using flow simulation

Lin Chao-Ming, Chen Hsin-En, Cheng Chao-Han

模具公會

Due to the rapid development of solar energy. How to apply the light collection system to raise the efficiency of electricity for cost reduction becomes the key point to manufacturers. Fresnel lens applied in optics system can provide a great and efficient light collection, so it gradually...

If you are interested to read more, please contact Moldex3D for more information.

CAE simulation on warpage behavior of dust cover in lawnmowers

Jin-Jiang Xue, Yun-Yen Wang, Yu-Chih Tseng, Sheng-Lun Ting

模具公會

Two kinds of lawnmowers are using today in the market. One is driven by gasoline, and the other is by electric power. The lawnmower driven by gasoline is not appropriate for home garden using since it has disadvantages of loud noise and air pollution. Electronic...

If you are interested to read more, please contact Moldex3D for more information.

True 3D CAE simulation in injection compression molding

Shen-Teng Hu, Hsian-Sen Chiu, Yuan-Jung Chang, Chau-Kai Yu, Ching-Chang Chien, and Rong-Yeu Chang

JSPP

Generally, injection compression molding (ICM) can provide better product quality than conventional injection molding (CIM) in some injection molded products, such as micro-injection molding, less residual stress parts, and so on. To get a better understanding of ICM...

If you are interested to read more, please contact Moldex3D for more information.

Simulations of three dimensional gas penetrations during gas-assisted injection molding

Chih-Chung Hsu, Hsien-Sen Chiu, Wen-Hsien Yang, Rong-Yeu Chang

JSPP

Gas-Assisted Injection Molding (GAIM) has gained acceptance in eliminating sink marks and preventing warpage in the plastic industry. This study proposes a full 3D numerical approach to model the polymer melt filling and gas penetration in GAIM. The finite volume method is...

If you are interested to read more, please contact Moldex3D for more information.

The effects of induction heating and its mechanism on injection molding

Chao-Tsai Huang, I-Sheng Hsieh, Cheng-Han Tsai

JSPP

To eliminate surface defects and improve the quality of molded parts, increasing the mold temperature is one of the solutions. Using high mold temperature can eliminate weld lines, reduce molding pressure, residual stress, and clamping force, and improve part surface...

If you are interested to read more, please contact Moldex3D for more information.

An investigation of the molding simulation in inlaid glass on optical mirror base

Hsinn-Jyh Tzeng, Cheng-Lung Lee, Nai-Jen Hsiao

模具公會

Nowadays, thin and small goods have gradually become mainstream in the market, and the trend is more obvious in camera industry. Delicate digital camera becomes more favored than traditional ones. However, the smaller and thinner the digital camera is, the more important...

If you are interested to read more, please contact Moldex3D for more information.

A study on warpage behavior of working led lamp shell in auto-repair by true 3D molding simulation

Sun Ching-Yun, Chen Hsin-En

模具公會

Generally speaking, the molded working LED lamp shell in auto-repair will be assembled with printed circuit board (PCB), light emitting diode (LED) and lamphouse after injection. In the process of assembly, the ultrasonic plastics welder is used to press-fit these components...

If you are interested to read more, please contact Moldex3D for more information.

Simulations of three dimensional gas penetrations during gas-assisted injection molding

Chih-Chung Hsu, Rong-Yeu Chang1, Hsien-Sen Chiu2, Wen-Hsien Yang

模具公會

Gas-Assisted Injection Molding (GAIM) has gained acceptance in eliminating sink marks and preventing warpage as a development of breakthrough in the plastic industry. While it's difficult to control the gas penetration in molding process, the cost of mold developing would...

If you are interested to read more, please contact Moldex3D for more information.

True 3D CAE simulation in injection compression molding

Shen-Teng Hu, Yuan-Jung Chang, Hsien-Sen Chiu, Chao-Kai Yu, Ching-Chang Chien, Rong-Yeu Chang

模具公會

Generally, injection compression molding (ICM) can provide better product quality than conventional injection molding (CIM) in some injection molded products, such as micro-injection molding, less residual stress parts, and so on. To get a better understanding of ICM...

If you are interested to read more, please contact Moldex3D for more information.

The application of CAE molding simulation integrated with taguchi method on controlling warpage behavior of printer components in molding

Hsinn-Jyh Tzeng, Ting- Yi Lin, Nai-Jen Hsiao

模具公會

The advances of plastic mold and injection molding technology contribute practical mass production in various industries. Moreover, it benefits die design a lot. Proper die design can not only extend the life of die, but also reduce effectively production costs. In 3C industry, most of...

If you are interested to read more, please contact Moldex3D for more information.

A study on the CAE-aided molding simulation of optical lens protector glass and mirror base

Hsinn-Jyh Tzeng, Po-Ching Huang, Nai-Jen Hsiao

模具公會

Due to the rapid development of micro-industries, cameras and video cameras are also required to be smaller, thinner and portable. With this trend, lens, the key part of cameras, are processing towards thinness and shortness as well, so that the manufacture technology requires higher...

If you are interested to read more, please contact Moldex3D for more information.

Complex viscosity of liquid n-hexadecane under oscillatory shear using non-equilibrium molecular dynamics simulations

Huan-Chang Tseng, Rong-Yeu Chang

ANTEC

Rheological computer experiments, involving small amplitude oscillatory shear (SAOS) flows for liquid n-hexadecane, are performed using non-equilibrium molecular dynamics (NEMD) methodology. In particular, the so-called Cox-Merz rule, which suggests that the magnitude of...

If you are interested to read more, please contact Moldex3D for more information.

Numerical simulation for thermal control system in variotherm mold design

Hung-Chou Wan, Yan-Chen Chiu, Chia-Hsiang Hsu, and Rong-Yeu Chang

ANTEC

Rheological computer experiments, involving small amplitude oscillatory shear (SAOS) flows for liquid n-hexadecane, are performed using non-equilibrium molecular dynamics (NEMD) methodology. In particular, the so-called Cox-Merz rule, which suggests that the magnitude of...

If you are interested to read more, please contact Moldex3D for more information.

The warpage and optical property influenced by the process-induced property variation in multi-component molding

Meng-Chih Chen, Chao-Tsai Huang, Yuan-Rong Chang, and Shi-Chang Tseng

ANTEC

Sequential multi-component molding is one of great methods to fabricate the modern injection products. Previous literatures have shown that various parameters, including the product geometries and materials selection, will affect the warpage of final products significantly...

If you are interested to read more, please contact Moldex3D for more information.

True 3D numerical simulation in injection compression molding (ICM)

Shen-Teng Hu, Hsian-Sen Chiu, Ching-Chang Chien, Chau-Kai Yu, and Rong-Yeu Chang

ANTEC

Generally, injection compression molding (ICM) can provide better product quality than that of conventional injection molding (CIM) in some injection processes and products, such as micro-injection molding, less residual stress parts, and so on. To get a better understanding of ICM...

If you are interested to read more, please contact Moldex3D for more information.

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