A study of temperature variation phenomena in the variotherm molding processes

Yan-Chen Chiou, Hung-Chou Wang, Hsien-Sen Chiu, Chau-Kai Yu, Wen-Hsien Yang

PPS

According to the Cycle-Average theorem, we know that the mold temperature variation within each shot is small under the assumption of constant cooling condition. With the development of variotherm technique, mold temperature variation would not be always small during cycles...

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

Three-dimensional CAE of wire sweep and paddle shift in microchip encapsulation

Ya-Yuen Chou, Hsien-Sen Chiu and Wen-Hsien Yang

IMPACT

In the packaging of plastic-encapsulated microelectronics (PEM), microchip encapsulation has been the dominant technique for encapsulation processes. During fabrication of microchip encapsulation, stress-induced problems such as wire sweep and paddle shift are the most...

Optical property investigation in sequential overmolding

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

JSPP

Sequential overmolding is one of the great methods to fabricate the modern injection products. Due to its complicated nature and the unclear physical mechanism, trial-and-error method can not realize and manage the warpage and its mechanism effectively. Besides, how the polymer...

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

Frozen-layer and its dynamic properties on warpage in injection molded parts

Chao-Tsai Huang, Meng-Chih Chen, Wen-Hsien Yang, Yuing Chang, Chung Shin Liu, and Shih Tsun Huang

JSPP

The growth of the frozen-layer, which covers skin and orientation layers, will affect the shrinkage at mold during the processing of the part after eject out from the mold on both flow and perpendicular directions. However, its dynamic properties and effects on the warpage are...

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

Improve cooling efficiency of injection molding by pulsed-cooling approach

I-Sheng Hsieh, Yan-Chen Chiou, Wen-Hsien Yang, Shia-Chung Chen, Pham Son Minh

JSPP

Recently, the variotherm molding technologies are more and more popular, and among them, pulsed cooling approach is a more practical one. In general, the pulsed cooling approach is used for the mold temperature control without changing cooling system design. However...

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

The application of improving flow balance simulation during filling a multi-cavity with modified runner system

Yi-Chuan Wu Han-Sheng Shi

模具公會

Multi-cavity injection molding has been regarded as a way to mass-production and cost down at the same time. However, the filling imbalance in geometrically balanced runner system of multi-cavities is a serious problem. Some researches have been proven some methods, such as...

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

The warpage stydy in injection molding by using three dimensional thickness control method

Yuing Chang, Shih Tsun Huang, Sung-Wei Huang, Shia-Chung Chen, Meng-Chih Chen, Chao-Tsai Huang, and Venny Yang

模具公會

Warpage is one of the most crucial problems in injection molding quality control. Since many factors will cause shrinkage and warpage, it is very difficult to distinguish which factor always dominates warpage. In this study, we have developed “Three Dimensional Thickness Control...

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

The application of simulation analysis on bumper product in automotive industry

Su Jing-Yau , Ting Sheng-Lun

模具公會

In automotive industry, consumers’ preference for the vehicle outlook has a great impact onto its retail. Design modifications are usually done depending on consumers’ preference to promote the sale. Take bumper as example, the strength and position of weld line are...

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

Fiber orientation effect on the warpage of the electronic connectors

Marvin Wang, Ben Chen, Alice Lin

模具公會

Benefited from the application of plastics and being widely used for 3C electronic products, electronic connector becomes an important and common plastics product. Responding to the development trend of 3C products, its design gradually tends toward lighter and smaller...

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

Application of simulation analysis for studying the influence of the optimal runner and gate location of drawing machine shell

Tzeng Hsinn-Jyh, Wu Tsung-Yen, Chen Hsin-En

模具公會

Mold plays the most important role in mass production, so it is called mother of industry as well. Furthermore, the mold for plastics products occupies more than 54% of market share. Molds matter the development schedule and the quality of products, so the design and design...

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

Application of CAE simulation analysis technology in bio-detection electrode film die design

Tzeng Hsinn-Jyh ,Huang Ji-Jer ,Chen Hsin-Hung ,Chen Hsin-En

模具公會

In biomedical industry, it used to apply biosensor electrode to receive the electric wave transmitting between brain and human body. Because the electrode assembled with a base, conduction strip and copper wire connected to instrument is irremovable, the traditional...

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

The application of simulation analysis for mold design of drawing machine base

Tzeng Hsinn-Jyh,Chen Yi-gang, Chen Hsin-En

模具公會

With the advance of technology, the plastic injection molding can be applied for mass production, which will reduce much cost effectively. Therefore, plastic products replace other non-plastics products gradually. However, the cost of raw material has been risen recently...

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

Simulations and verifications of injection molded optical lenses

Yuan-Jung Chang, Chao-Kai Yu, Hsien-Sen Chiu, Wen-Hsien Yang, Pei-Jen Wang

模具公會

Injection-molded optical parts have been widely employed for various electronic products in the market today. The large variations in thickness and stringent requirements in residual stresses have made the parts tough to manufacture. In this study, a true 3D CAE analysis incorporated...

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

The variation characters of mold temperature under variotherm mold temperature control

Yan-Chen Chiou, Hung-Chou Wang, Hsien-Sen Chiu, Chau-Kai Yu, Wen-Hsien Yang, and Rong-Yeu Chang

模具公會

With the development of variotherm mold temperature control, people use this technique to fit the different 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.

The investigation of warpage behavior by considering the previous shot properties in sequential overmolding

Jing Wei, Yan-Chen Chiu, Chih-Jen Lin, Hung-Chou Wang, Hsien-Sen Chiu, Cheng-Yung Liu

模具公會

Multi-component molding (MCM) is an efficient technology to the assembly of discrete parts and is widely applied in various industries. Due to its complicated nature and physical mechanism, the conventional trial-and-error method can not develope products effectively...

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

Warpage management using three dimensional thickness control method in injection molding

Yuing Chang, Shih Tsun Huang, Sung-Wei Huang, Shia-Chung Chen, Chao-Tsai Huang, Meng-Chih Chen, and Venny Yang

ANTEC

Warpage is one of the most crucial problems in injection molding quality control. Since many factors will cause shrinkage and warpage, it is very difficult to distinguish which factor always dominates warpage. In this study, we have developed Three Dimensional Thickness Control...

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

Thermal feature of variotherm mold in injection molding process

Yan-Chen Chiou, Hung-Chou Wang, Hsien-Sen Chiu, Chau-Kai Yu, Wen-Hsien Yang, Rong-Yeu Chang

ANTEC

Warpage is one of the most crucial problems in injection molding quality control. Since many factors will cause shrinkage and warpage, it is very difficult to distinguish which factor always dominates warpage. In this study, we have developed Three Dimensional Thickness Control...

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

The investigation of warpage behaviour by considering the process-induced property variation in sequential overmolding

Jing Wei, Yan-Chen Chiu, Chih-Jen Lin, Hung-Chou Wang, Hsien-Sen Chiu, Cheng-Yung Liu

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.

Simulations and verifications of true 3D optical parts by injection molding process

Yuan-Jung Chang, Chao-Kai Yu, Hsien-Sen Chiu,Wen-Hsien Yang, Huai-En Lai and Pei-Jen Wang

ANTEC

The crucial factors in multi-component molding (MCM) processes were difficult to identify with the conventional trial-and-error method due to its complicated nature and physical mechanism. Regarding the temperate conduction effect between two shots, we adopt directly a true 3D...

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

Melt memory and core deflection

Ya-Yuen Chou, Yuan-Jung Chang, and A. J. Giacomin

ANTEC

Injection-molded optical parts have been widely employed for various commercial electronic products in the market today. The large variations in thickness and stringent requirements in residual stresses have made the parts tough to manufacture. In this study, a true 3D CAE...

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

Investigation of the heat hesitation in the in-mold-decoration processing with the film

Shia-Chung Chen, Shih-Hsien Tarng, Cheng-Han Tsai, Yan-Chen Chiou, Wen-Hsien Yang

ANTEC

When injection molding long slender hollow parts with closed ends, like test tubes, an unevenly advancing melt front around the cores results in core deflection, a pervasive problem especially when the parts are thinwalled. Accurately predicting core deflection problems is accomplished...

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

Improve cooling effect of injection molding by pulsed-cooling method

Shia-Chung Chen, Pham Son Minh, I-Sheng Hsieh, Yan-Chen Chiou

ANTEC

In-mold decoration (IMD) becomes a more and more popular process recently due to its high manufacturing efficiency; therefore, it is important to investigate and realize the complicated process mechanism of IMD. In this study, a PC film is attached to the cavity side for observing...

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

Dynamic property of the frozen-layer and its effects on warpage in injection molded parts

Yuing Chang, Chung Shin Liu, Shih Tsun Huang, Chao-Tsai Huang, Meng-Chih Chen, and Wen-Hsien Yang

ANTEC

In recent years, the variotherm molding technologies is more and more popular; and the pulsed cooling approach is one of the variotherm processing. However, the complicated cooling control system and the transient behavior of the mold made it difficult to optimize the process..

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

A three-dimensional CAE molding of microchip encapsulation

Ya-Yuen Chou, Han-Po Yeh, Hsien-Sen Chiu, Chau-Kai Yu, and Rong-Yeu Chang

ANTEC

The formation of the frozen-layer, which covers skin layer and orientation layer, will affect the shrinkage at mold during cooling cycle and post-shrinkage of the part after ejecting out from the mold on both flow and transverse directions. However, its physical mechanism and effects..

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

Viscoelasticity and its dynamic features on the frozen-layer and warpage in injection molded parts

Yuing Chang, Chung Shin Liu, Shih Tsun Huang1, Chao-Tsai Huang, Meng-Chih Chen, and Wen-Hsien Yang

PPS

The formation of the frozen-layer, which covers skin layer and orientation layer, will affect the shrinkage of cooling down hot melt at mold during cooling cycle and post-shrinkage of the part after ejecting out from the mold on both flow and transverse flow direction, and many other...

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

Validating 3D numerical simulation of core deflection

Ya-Yuen Chou, Wen-Hsien Yang, and A. J. Giacomin, A. J. Hade

PPS

In the manufacturing of long hollow plastic parts with one closed end, the melt front advances unevenly around a cantilevered slender core, causing core deflection. This deflection not only causes uneven wall thickness, but also itself accelerates melt flow behind the deflection...

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

Integrated numerical simulations to predict birefringence of injection molded parts

Yuan-Jung Chang, Wen-Hsien Yang, Chia-Hsiang Hsu and Rong-Yeu Chang

PPS

Plastic optical components have been widely used in various industrial applications, such as optical disks, lenses, and waveguides. However, birefringence inside the injection-molded parts greatly affects optical properties and has been regarded as a crucial factor in optical product...

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

CAE analysis for molding design of microchip encapsulation

Ya-Yuen Chou, Chih-Jen Lin, Chao-Kai Yu and Hsien-Sen Chiu

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. During the period of fabrication, various problems causing...

3D simulation and visualization of mold filling in injection molding

JSPP

Filling behavior determines the quality and productivity of products. The flow mechanism inside the mold, however, is profound and thus makes itself abstruse for ones who deal with mold filling issues using conventional trial and error methods. In this study, we conducted true 3D...

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

Numerical simulation and experimental verification on fiber orientation behavior in injection molding

Chih-Chung Hsu, Dar-Der Hsieh, Hsian-Sen Chiu, Masashi Yamabe

JSPP

Fiber-reinforced engineering plastics materials have been widely adopted in recent years for their superior strength and modulus in injection molding. Since the mechanical properties and dimensional accuracy of plastics with fibers strongly depend on the fiber orientation and fiber...

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

Prediction of residual stress and birefringence in injection molded plastics using true 3D CAE

Yuan-Jung Chang, Wen-Hsien Yang, Chia-Hsiang Hsu and Rong-Yeu Chang

JSPP

Injection molded parts have been widely used in various industrial applications, such as 3C components and optical devices. However, the injection molding process creates large flow kinematics and temperature variations in space and time, which may lead to complicated...

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

The application of mold filling analysis in water purification mold

Tzeng Hsinn-Jyh, Chu Chia-Chun, Chen Ying-Xian, Ting Sheng-Lun, Hsiao Nai-Jen

模具公會

In this study, the mold filling analysis is performed for water purification mold design using Moldex3D software. The analysis of filling, packing and warp results can guide us to make the better judgement on mold design and parameter setting and to improve quality and efficiency...

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

The development of the cover part of display by CAE molding analysis

Kevin Tseng, Lala Ni, Denny Wei

模具公會

Because of the features of large size and more shut-off holes, molded defects of display cover, like short shot, volume shrinkage and welding line occurs often during injection molding process. It is difficult to find out molding problems in conventional procedures and take much...

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

Integration of CAE technology on wireless communication product development

Shih-Kai Chen, Chien-Ting Laio

模具公會

With the rapid development of 3C, the application of wireless communication expands wildly from Blue-tooth used in short distance to RFID adopted over 100m in broadband community. Nowadays, the demand of thinness and lightness for producing wireless products has become..

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

In-depth simulation investigation on design and structure of automobile speed meter panel parts

Tsai-Hsin Hsieh

模具公會

The speed meter, one of the most critical components of auto interiors, is used for providing various immediate information like RPM, speed, fuel status, and indicators of engine, car doors, electricity for drivers. Therefore, to meet more and more demanding marketing requirements...

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

Wire sweep simulation of stacked die ic packages

Kuang-Kuo Wu, Rong-Kun Li

模具公會

Owing to the new demand of new product development for 3C and other applications, new package designs have been developed rapidly recently. Due to the requirements of thinner and smaller ICs, stacking die technology has been become the main trend in IC packaging...

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

Use CAE to improve roundness of lens modules

Yung-wei Lin, Han-wei Chen, Chiu-Po Chao

模具公會

In modern world, cell phones with digital camera are becoming the most essential accessories for everyone. Due to the request of lightness and convenience, the researches of miniaturization are done constantly. Even a tiny defect will lead to a huge influence on the...

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

Application of injection molding CAE to shorten the development cycle time of electronic connectors

Marvin Wang, Alice Lin

模具公會

The electronic connectors are applied widely in the plastic industry. Following the design trend towards lightness, thinness, shortness, and precision, the design of connectors is going with the stream. The common problems, such as short shot, air trap, and warpage, occurring while...

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

Effect of thermoforming and injection molding processes on in-mold decoration

Chao-Chang Tang, Jian-Hong Lin, Kin-Fu Lu, Meng-Chih Chen, Chao-Tsai Huang, Chau-Kai Yu

模具公會

Decoration processing for injection molded parts, such as painting, printing, hot stamping, electroplating, and so on, is commonly applied to enhance the surface quality and product value. Due to extra processes, cost, and pollution problems increase. One of great solutions...

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

Numerical visualization of melt flow in cold runner and hot runner

Cheng-Li Hsu, Yu-Zeng Lin, Shia-Chung Chen, Chiah-Sing, Hung, Cheng-Yi Chang, and Wen-Hsien Yang

模具公會

The delivery system, such as cold runners or hot runners, is very important in the fabrication process of injection molded parts. Several parameters, e.g. the runner type, product design, complex material properties, and different combinations of specified process conditions...

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

The effects of different process conditions on the quality of injection-molded parts

Chuan-Wei Chang, Chia-Hsiang Hsu and Chia-Hsun Chen

ANTEC

The process conditions, such as injection velocity, injection pressure, packing pressure and many others are the most important factors to determine the quality of injection-molded parts. However, because the combination of all factors is complicated, it is very difficult to realize...

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

Simulation and verification on part surface quality using external gas-assisted injection molding process

Shia-Chung Chen, Song-Wei Huang, Cheng-Yi Chang, Hsin-Wei Hung and Wen-Hsien Yang

ANTEC

The process conditions, such as injection velocity, injection pressure, packing pressure and many others are the most important factors to determine the quality of injection-molded parts. However, because the combination of all factors is complicated, it is very difficult to realize...

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

Simulation and verification mold temperature variation of pulsed-cooling

Shia-Chung Chen, Shih-Hsien Tarng, Yan-Chen Chiou, T.P. Tsai, Wen-Hsien Yang

ANTEC

In this research, both simulation and experiment are carried out to study the part surface sink index when molded by conventional injection (CIM) and external gas-assist injection molding (EGAIM). The part of 100 mm long, 50 mm wide and 1.5 mm thick was designed with ribs of...

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

Optical property investigation in sequential multi-component molding

Chao-Tsai Huang, Meng-Chih Chen, Yuan-Rong Chang, Wen-Li Yang, Shi-Chang Tseng, and Huang-Yi Chang

ANTEC

Nowadays most products need high quality of surface appearance which can be achieved usually at high mold temperature. Pulsed cooling is one of the variable mold temperature controls without significant increase in cycle time. In this study, pulsed cooling was applied in...

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

Numerical visualization of melt flow in cold runner and hot runner

Cheng-Li Hsu, , Yu-Zeng Lin, Shia-Chung Chen, Cheng-Han Tsai, Cheng-Yi Chang, and Wen-Hsien Yang

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 molded materials will affect the warpage of final products significantly...

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

Investigation of fiber orientation in filling and packing phases

Chih-Chung Hsu, Dar-Der Hsieh, Hsian-Sen Chiu, Masashi Yamabe

ANTEC

During the past decades, people realize that the deliver system, such as cold runner or hot runner, is very important in injection parts fabrication. Indeed, several parameters will affect the deliver system including the runner type, the part design, the complex material property...

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

Integration of forming and injection molding processes on in-mold decoration product development

Chao-Chang Tang, Jian-Hong Lin, Kin-Fu Lu, Meng-Chih Chen, Chao-Tsai Huang, and Chau-Kai Yu

ANTEC

Fiber-reinforced engineering materials are widely used for their superior mechanical properties in lots of plastic parts. And it is truly believed that in the injection molding process the fiber orientation and anisotropy shrinkage are very complex 3D phenomena which may influence...

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

Integrated numerical simulations of birefringence prediction in injection molded parts

Yuan-Jung Chang, Wen-Hsien Yang, Chia-Hsiang Hsu, and Rong-Yeu Chang

ANTEC

Decoration processing for injection molded parts, such as painting, printing, hot stamping, electroplating, and so on, is commonly applied to enhance the surface quality and product value. Due to extra processes, cost, and pollution problems increase. One of great solutions...

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

3D numerical simulation investigating the effect of volumetric flow rate on core deflection

Ya-Yuen Chou, Wen-Hsien Yang, and A. J. Giacomin, A. J. Hade

ANTEC

Plastic optical components have been widely used in various industrial applications, such as optical disks, lenses, and waveguides. During the processing or development, one of the key problems, birefringence, can greatly affect optical properties. It has been regarded as a crucial..

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

Numerical simulation and experimental study on the temperature behavior of pulsed cooling

Shia-Chung Chen, Shih-Hsien Tarng, Yan-Chen Chiou, T.P. Tsai, Wen-Hsien Yang

PPS

In order to improve the quality of parts, increasing mold temperature can greatly improve the surface appearance of products. Pulsed cooling is one of the mold temperature control technology to increase mold temperature without significant change in cycle time. In this...

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

Numerical simulation and experimetal investigation of fiber in injection molding

Hsien-Sen Chiu, Ya-Yuen Chou, Wen-Li Yang, Chia-Hsiang Hsu, Yamabe Masashi

ANTEC

Quality of injection-molded parts is determined by a lot of factors, such as machine, mold design, plastic material, operation conditions and others. Normally, using numerical or experimental method to examine and control all parameters is still very difficult. In this study...

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

An investigation on the temperature behavior in mold embedded with heater

Shia-Chung Chen, I-Chao Wang, Yan-Chen Chiou, Ya-Yuen Chou, and Wen-Hsien Yang

ANTEC

A lot of plastic parts are made of fiber-reinforced engineering materials for their superior mechanical properties. Since the flow induced fiber orientation is complex 3D behavior, the final properties of the injected parts become very complicated. In this research, a ribbed flat plate...

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

Integrated true 3D simulation of rapid heat cycle molding process

Yan-Chen Chiou, Ya-Yuen Chou, Hsien-Sen Chiu,,Chau-Kai Yu and Chia-Hsiang Hsu

ANTEC

Conventionally, a mold is to be cooled by cooling channels in an injection molding process. However, the demand for the high quality plastics has popularized the varied-thermo control of mold system. An electrical heater system is one of the popular heating methods used in...

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

Effects of melt rotation on warpage phenomena in injection molding

Ching-Chang Chien, Yi-Hui Peng, Wen-Li Yang, and Rong-Yeu Chang

ANTEC

In the Rapid Heat Cycle Molding (RHCM) Process, the mold temperature is rapidly changed in each cycle to improve part quality and reduce cycle time. In this paper, an integrated fully transient true 3D approach is proposed by considering the interplay between filling/pack and...

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

Influence of injection molding parameters on one-stage injection stretch blow molding

Meng-Chih Chen, Chih-Lin Hsu, Chao-Tsai Huang, Wen-Hsien Yang, Chia-Hsun Chen, and Kun-Chang Lin

ANTEC

Shear induced imbalanced filling in a geometrically balanced runner system is always a difficult problem to handle in injection molding. Moreover, the shear-induced temperature variation across the cross section also affects the warpage result. Previous research proposed that the...

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

Investigation on warpage and its behavior in sequential overmolding

Chao-Tsai Huang, Meng-Chih Chen, Wen-Li Yang, Kai-Jie Chang, and Shi-Chang Tseng

ANTEC

The advantages of one-stage injection stretch blow molding (ISBM) are energy efficiency and high productivity as reheating is not necessary. However, due to the complexity of operation parameters from raw material through injection molding to the end products, a conventional...

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

True 3D simulation of flow-induced residual stress in injection molding

Rong-Yeu Chang, Yuan-Rong Chang, Yi-Hui Peng, Wen-Hsien Yang and Chia-Hsiang Hsu

ANTEC

Sequential overmolding is one of the great methods to fabricate the modern injection products. Due to its complicated nature and the unclear physical mechanism, trial-and-error method can not realize and manage the warpage and its mechanism effectively. In this study, various...

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

A novel approach for predicting birefringence of optical parts

Yuan-Rong Chang, Hsien-Sen Chiu, Wen-Hsien Yang, and Rong-Yeu Chang

ANTEC

Flow-induced residual stress has been one of the essential issues in plastics injection molding. It affects many physical properties of the finished parts, such as warpage behavior and optical properties. Flow-induced residual stress is caused by the high shear rate of plastics flow...

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

Numerical simulation and moldability investigation of micro-features

Shia-Chung Chen, Li-Chi Su, Cheng-Yi Chang, Hsin-Wei Hung and Wen-Hsien Yang

ANTEC

Plastic optical parts or components have been used in many industrial applications, such as optical disks, lenses, and waveguides. For the development of optical products, the control of birefringence is crucial. Basically, it is dependent on optical characteristics of material and...

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

A study on the stability of gas penetration for a symmetric part in gas assisted injection molding

Yi-Chiun Wu, Shih-Jung Liu

模具公會

Gas assisted injection molding has been applied in industries to handle some thick parts for many years. Since the core technology of gas assisted injection molding is not same as that of the traditional injection molding, people will face some different problems. In this study, firstly...

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

Application of CAE simulation technology on the electronic components develpment

Sam Hsieh, Sean Chen

模具公會

In the modern product development, since the life-cycle of products is shorten, the development period is reduced for the products year by year. Time to the market is always one the most crucial factors. Based on the restriction of development period, the injection simulation using...

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

Investigation on warpage and its behavior in multi-component molding

Chih-Lin Hsu, Meng-Chih Chen, Chao-Tsai Huang, Wen-Hsien Yang, Kai-Jie Chang, and Shi-Chang Tseng

模具公會

With the increasing requirement for the diversity of plastic products, plastic industries have engaged in development and processing of modern injection products, in which multi-component molding (MCM) has become one of the greatest techniques. However...

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

Numerical simulation and moldability investigation of micro-feature

Shai-Chung Chen, Li-Chi Su, Cheng-Yi Chang, Hsin-Wei Hung, Wen-Hsien Yang

模具公會

In micro-injection molding, the preservation of precise micro-feature is one of the most important indications to ensure proper functionality and quality. A new technique, “Induction Heating”, which is advanced in heating up the mold quickly and accurately, is adopted to...

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

Influence of injection molding parameters on one-stage injection stretch blow molding

Meng-Chih Chen, Chih-Lin Hsu, Chao-Tsai Huang, Wen-Hsien Yang, Chia-Hsun Chen, and Kun-Chang Lin

模具公會

In the past decades, blow molding has been used widely to produce thousands of hollow plastics products, such as drink bottles, automobile tanks, containers, and so on. One of the main forming methods is injection blow molding with or without stretched processes...

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

Intelligent quality prediction in injection molding

Chia-Hsiang Hsu, Chuan-Wei Chang and Jyh-Jer Jwo

ANTEC

Process-induced residual stress is one of the most important problems that confound the overall success of injection molding process, especially for multi-material injection molding that uses two or more molds to produce a multi-material plastic part. It could cause the...

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

Geometrical effect and material selection in multi-component molding (mcm) development

Chao-Tsai Huan, Ching-Hui Yeh, and Shi-Chang Tseng

ANTEC

The demand for miniature molded parts has been growing over last decade. The filling in micro structure regions are primarily 3D and hence cannot be properly modeled by the 2.5D approach. A 3D model is developed to simulate the micro molding. The numerical results are compared...

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True 3D CAE visualization of “intra-cavity” filling imbalance in injection

Jimmy C.Chien, Chao-Tsai Huang, Wen-Hsien Yang, and David C.Hsu

ANTEC

Due to its complicated nature and the unclear physical mechanism for the Multi-Component Molding (MCM) processes, conventionally the trial-and-error method can not catch the crucial factors effectively. In this study, the product geometrical effect and material selection in MCM...

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True 3D and fully transient mold temperature simulation for rhcm process

YuFeng Chen, Venny Yang, WenHsien Yang, and Rong-Yeu Chang

ANTEC

The intra-cavity flow imbalanced phenomena have been discovered in either a single cavity or a multi-cavity mold, and result in the uneven product quality within one cavity. In this paper, 3D numerical simulation method is applied to realize this imbalanced phenomenon and its...

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

Three-dimensional numericalapproach for core plate deflection

Allen Y. Peng, David C. Hsu. and Chia-Hsun Chen

ANTEC

In the Rapid Heat Cycle Molding (RHCM) Process, the mold temperatures are usually quit high during filling and get cooled quickly in the cooling phase. A true 3D and transient thermal response heating and cooling analysis model is proposed to help analysis and optimize the...

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Mold deformation effects on ultra-thin wall injection-molded parts

Rong-Yeu Chang, Allen Y. Peng and Wen-Hsien Yang

ANTEC

Non-uniform melt flow around the core plate during injection molding process can cause the plate to deflect during filling and packing stage. Moreover, this core deflection might result variations in wall thickness, especially for thin parts. In this paper, an effective 3D numerical...

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Prediction of the weld-line-induced strength reduction for injection-molded plastic parts

Allen Y. Peng, David C. Hsu, Wen-Hsien Yang, and Rong-Yeu Chang

ANTEC

Ultra-thin-walled injection molding is becoming important due to the explosive growth of requirement of thinner and lighter plastic parts, especially for portable electronic devices. However, the flow pressure and the uneven mold temperature in injection molding will cause...

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Residual stress effects on multi-material injection-molded parts

Allen Y. Peng, Wen-Hsien Yang and David C. Hsu

ANTEC

Process-induced residual stress is one of the most important problems that confound the overall success of injection molding process, especially for multi-material injection molding that uses two or more molds to produce a multi-material plastic part. It could cause the...

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True 3D numerical simulation for micro injection molding

WenHsien Yang, Dan Chang, Venny Yang, PeiChi Chang, and Sheng Jye Hwang

ANTEC

True 3D mold filling simulation is becoming popular for its capability to providing better accuracy with minimum model simplification. However, such a large-scale non-linear computation places extreme demands on computing power. Moreover, the complex 3D...

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

A study of micro injection molding optical fiber ferrules

Zheng-Guan. Lin, Shi-Chang Tseng, Allen Peng, and C.T. Huang

ANTEC

This study focused on plastic micro injection molding optical fiber ferrules. Each ferrule has a through hole in the center. The inner diameter is 125±1 m. How to keep the micro core pin at the center becomes a critical issue. A guiding mechanism is introduced to reduce the chance of...

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

Enhanced structure CAE solution with molding effect for automotive parts

Allen Y. Peng, Wen-Hsien Yang, David C. Hsu

ANTEC

This study focused on plastic micro injection molding optical fiber ferrules. Each ferrule has a through hole in the center. The inner diameter is 125±1 m. How to keep the micro core pin at the center becomes a critical issue. A guiding mechanism is introduced to reduce the chance of...

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

True 3D CAE visualization of filling imbalance in geometry-balanced runners

C.C. Chien, C.C. Chiang, W. H. Yang, Vito Tsai and David C.Hsu

ANTEC

An increasing number of automotive parts are made of engineering plastic for its low cost and superior material properties. The traditional structure analysis for automotive injection-molded part is to perform CAE analysis based on the assumption of one or several isotropic materials...

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

Three-dimensional simulation of multi-shot sequential molding

Rong-Yeu Chang, Allen Y. Peng, Wen-Hsien Yang and David C. Hsu

ANTEC

The filling imbalance in geometrically balanced runner system of multi-cavities is always difficult to handle in injection molding. Previous researchers revealed that the flow imbalance problem is related to the three-dimensional thermal history and shear rate distribution of melt...

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

Seamless integration of injection molding and structure analysis tools

Allen Y. Peng, Wen-Hsien Yang and David C. Hsu, and Rong-Yeu Chang

ANTEC

For the recent years, multi-shot sequential molding is widely applied in various industries. It is a process that uses two or more molds to produce a multi-material component. In principle, the first material is injected into the first mold by standard single-material molding technique and...

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

Parallel true 3D CAE with hybrid meshing flexibity for injection molding

Wen-Hsien Yang, Allen Peng, Louis Liu and David C.Hsu

ANTEC

The application of CAE analysis in injection-molded plastic part is becoming popular in the recent years, especially for part structure design and molding process optimization. Users study the designs and experiments through numerous individual CAE tools. In fact, these...

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

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