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Injection moldings

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Published: 15 May 2022
Fig. 31 Image of an injection mold mounted in an injection molding machine More
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Published: 15 May 2022
Fig. 37 A-B-A co-injection molding process.​ (a) A, first polymer injected. (b) B, second polymer injected. (c) A, first polymer injected More
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Published: 15 May 2022
Fig. 4 Four-cavity (2+2) family injection mold shown opened on the bench with molded parts from the mold in white ABS material. Photo courtesy of Quality Molding, Inc., Somerset, WI, USA More
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Published: 15 May 2022
Fig. 22 Products manufactured using plastic injection molding More
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Published: 15 May 2022
Fig. 23 Injection molding machine and its main components More
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Published: 15 May 2022
Fig. 25 Basic overview of the steps used in the plastic injection molding process. (a) Steps 1 to 7 of the process. (b) Schematic of the injection molding process: A, injection phase; B, pack/hold phase; C, plasticating/screw recovery phase; D, mold open/part ejection phase More
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Published: 15 May 2022
Fig. 28 Draft angles in injection molding More
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Published: 15 May 2022
Fig. 30 Examples of injection-molded bosses More
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Published: 15 May 2022
Fig. 32 Images of the cavity and core geometries of an injection mold. (a) Parting line view (A-side). (b) Platen side view (A-side). (c) Side view (A-side). (d) Parting line view (B-side). (e) Platen side view (B-side). (f) Side view (B-side) More
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Published: 15 May 2022
Fig. 35 Examples of common ejection components for injection molds More
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Published: 15 May 2022
Fig. 36 Typical part defects encountered in the injection molding process. (a) Flash. (b) Short shot. (c) Splay More
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Published: 15 May 2022
Fig. 42 Schematic of the gas-assist injection molding process. (a) Plastic injection. (b) Gas injection. (c) Part ejection More
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Published: 15 May 2022
Fig. 5 Rules for wall thickness and transitions in injection molded parts. Reprinted from Ref 1 with permission by Elsevier. Copyright Elsevier 2017 More
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Published: 15 May 2022
Fig. 7 Rules for standing rib features on injection molded parts. Consult the material supplier for specific requirements for the materials to be utilized. Reprinted from Ref 1 with permission by Elsevier. Copyright Elsevier 2017 More
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Published: 15 May 2022
Fig. 8 Design guidelines for cylindrical boss features on injection molded parts. Consult the material supplier for specific requirements for the materials to be utilized. Reprinted from Ref 1 with permission by Elsevier. Copyright Elsevier 2017 More
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Published: 15 May 2022
Fig. 11 Examples of various gates utilized within an injection mold to feed and fill the part during the molding process. Reprinted from Ref 1 with permission by Elsevier. Copyright Elsevier 2017 More
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Published: 15 May 2022
Fig. 35 SEM fractographs of an injection-molded acrylonitrile-butadiene-styrene specimen fractured by impact at ambient temperatures, illustrating parabolas of various shapes. (a) U-shaped parabola. Original magnification: 1000×. (b) Petal-shaped parabola. Original magnification: 1000×. (c) U More
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Published: 15 May 2022
Fig. 14 Rate of fatigue crack propagation of injection-molded glass-reinforced polyvinyl chloride composites containing 10 and 30 wt% glass as a function of the energy-release rate, J I . Arrows indicate the critical energy-release rate, J Ic , for each. More
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.homegoods.c0090424
EISBN: 978-1-62708-222-8
... Abstract A plastic bracket exhibited relatively brittle material properties, which ultimately led to catastrophic failure. The part had been injection molded from a medium-viscosity polycarbonate resin and had been in service for a short duration prior to the failure. Investigation (visual...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.homegoods.c0090448
EISBN: 978-1-62708-222-8
... Abstract Housings (being tested as part of a material conversion) from an electrical appliance failed during an engineering evaluation. They had been injection molded from a commercial polycarbonate/PET blend. Parts produced from the previous material, a nylon 6/6 resin, had consistently passed...