A two-stage approach for optimizing the robust injection molding parameters

2011 ◽  
Author(s):  
Li Dapeng ◽  
Xu Jia ◽  
Liu Yang ◽  
Wang Fuli
Keyword(s):  
Injection Molding ◽  
Two Stage

Electrochemical treatment of metal inserts for subsequent assembly injection molding of tight electronic systems

2018 ◽  
Vol 38 (7) ◽  
pp. 675-684 ◽  
Author(s):  
Tobias Kleffel ◽  
Dietmar Drummer
Keyword(s):  
Injection Molding ◽  
Electronic System ◽  
Electrochemical Treatment ◽  
Electronic Systems ◽  
Automotive Applications ◽  
Two Stage ◽  
Metal Insert

Abstract One method to produce electronic systems with high resilience is the encapsulation of metal inserts, for example, lead frames, using assembly injection molding. Such parts are exposed to different mediums, such as water and oil, which can infiltrate and damage the electronic system, especially in automotive applications. Hence, one challenge is to ensure the tightness. The research covered in this paper focuses on the assembly injection molding of tight electronic systems using microstructured metal inserts, manufactured by a two-stage electrochemical treatment. The effects of the electrochemical treatment on the tightness and the bond between metal and polymer of the electronic system are investigated. Furthermore, the influence of the electrochemical treatment on the surface and geometry of the metal insert is evaluated.

scholarly journals Physical and mechanical characterization of PLLA interference screws produced by two stage injection molding method

2016 ◽  
Vol 5 (3-4) ◽  
pp. 183-191 ◽  
Author(s):  
Ali Reza Sadeghi-Avalshahr ◽  
Mohammad Khorsand-Ghayeni ◽  
Samira Nokhasteh ◽  
Amir Mahdi Molavi ◽  
Mohammad Sadeghi-Avalshahr
Keyword(s):  
Injection Molding ◽  
Mechanical Characterization ◽  
Two Stage ◽  
Interference Screws ◽  
Molding Method

Comparison of fiber‐reinforced recycled polyamide in single stage and two stage injection molding

2018 ◽  
Vol 40 (5) ◽  
pp. 1731-1739
Author(s):  
Jochen Wellekötter ◽  
Bonten Christian
Keyword(s):  
Injection Molding ◽  
Single Stage ◽  
Fiber Reinforced ◽  
Two Stage

A Two-Stage Optimization System for the Plastic Injection Molding with Multiple Performance Characteristics

2012 ◽  
Vol 468-471 ◽  
pp. 386-390 ◽  
Author(s):  
Wen Chin Chen ◽  
G.L. Fu ◽  
Denni Kurniawan
Keyword(s):  
Injection Molding ◽  
Experimental Work ◽  
Optimal Parameter ◽  
Back Propagation ◽  
Back Propagation Neural Network ◽  
Process Parameter ◽  
Plastic Injection Molding ◽  
Two Stage ◽  
Optimization System ◽  
Plastic Injection

This study proposes a two-stage optimization system to generate the optimal process parameter settings of multi-quality characteristics in the plastic injection molding (PIM) products. In the first stage, Taguchi orthogonal array was employ to arrange the experimental work and to calculate the S/N ratio to determine the initial process parameter settings. Then, S/N ratio predictor and S/N quality predictor was constructed by employed the back-propagation neural network (BPNN). In addition, S/N ratio predictor was along with simulated annealing (SA) used to search for the first optimal parameter combination in order to reduce the PIM process variance. In the second stage, BPNN quality predictor and particle swarm optimization (PSO) was intended to find the optimal parameter settings for the best quality specification. Results from the experimental work show that the proposed two-stage optimization system can create the best process parameter settings which not only meet the quality specification, but also effectively reduce cost.

Binder removal by a two-stage debinding process for powder injection molding Fe–50Ni alloy parts

2019 ◽  
Vol 6 (8) ◽  
pp. 0865e3 ◽  
Author(s):  
Muhammad Ali ◽  
Faiz Ahmad ◽  
Puteri Sri Melor ◽  
Noorhana Yahya ◽  
Khurram Altaf ◽  
...  
Keyword(s):  
Injection Molding ◽  
Powder Injection Molding ◽  
Powder Injection ◽  
Two Stage ◽  
Binder Removal ◽  
Debinding Process

Binder removal via a two-stage debinding process for ceramic injection molding parts

2014 ◽  
Vol 40 (2) ◽  
pp. 2819-2824 ◽  
Author(s):  
Sarizal Md Ani ◽  
Andanastuti Muchtar ◽  
Norhamidi Muhamad ◽  
Jaharah A. Ghani
Keyword(s):  
Injection Molding ◽  
Two Stage ◽  
Binder Removal ◽  
Ceramic Injection Molding ◽  
Debinding Process

Direktcompoundierung für die Medizintechnik/Development of direct compounding

2021 ◽  
Vol 111 (06) ◽  
pp. 435-439
Author(s):  
Hans-Peter Heim ◽  
Guntis Japins ◽  
Michael Hartung
Keyword(s):  
Injection Molding ◽  
Direct Injection ◽  
Direct Influence ◽  
Two Stage ◽  
Direct Extrusion ◽  
Subsequent Processing ◽  
One Step ◽  
Stage Process ◽  
Product Customization ◽  
Material Mixing

In diesem Beitrag wird die Entwicklung des Direktcompoundierens (Direktspritzguss und Direktextrusion) als Alternative zum konventionellen zweistufigen Prozess, der aus dem Compoundieren und anschließender Verarbeitung in der Kunststofftechnik besteht, vorgestellt. Bei der Direktcompoundierung werden Mischen, Schmelzen und Formen zu fertigen Produkten kombiniert. Ein Vorteil hierbei ist die Möglichkeit von Produktindividualisierungen durch die direkte Einflussnahme und Anpassung der Materialrezeptur.   The content of this article is the development of direct compounding (direct injection molding and direct extrusion) as an alternative to the conventional two-stage process, which consists of compounding and subsequent processing in the polymer technology. Direct compounding comprises material mixing, melting and direct molding to form finished products in one step. One advantage here is the possibility of product customization through direct influence and adaptation of the material recipe.

Two-stage self-seeding method for preparation of single crystals of poly(phenylene sulfide)

1989 ◽  
Vol 47 ◽  
pp. 368-369
Author(s):  
Sengshiu Chung ◽  
Peggy Cebe
Keyword(s):  
Single Crystals ◽  
High Performance ◽  
Dilute Solution ◽  
Two Stage ◽  
Annealing Behavior ◽  
High Performance Polymers ◽  
Seeding Method ◽  
Phenylene Sulfide

We are studying the crystallization and annealing behavior of high performance polymers, like poly(p-pheny1ene sulfide) PPS, and poly-(etheretherketone), PEEK. Our purpose is to determine whether PPS, which is similar in many ways to PEEK, undergoes reorganization during annealing. In an effort to address the issue of reorganization, we are studying solution grown single crystals of PPS as model materials.Observation of solution grown PPS crystals has been reported. Even from dilute solution, embrionic spherulites and aggregates were formed. We observe that these morphologies result when solutions containing uncrystallized polymer are cooled. To obtain samples of uniform single crystals, we have used two-stage self seeding and solution replacement techniques.

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