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Injection Molding ©

3 Notes ©

Patentpedia Index 

4/11/2016 through 7/29/2008

0 Patent Abstracts

17 Patent Titles

1 Topics

7 Subtopics

3 Notes

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1 Topics

B. Processing    (1 Topic) (2 Subtopics)(1 Notes)   (7 Patent Titles)   (0 Patent Abstracts) (3/22/2016)

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7 Subtopics

D Injection Blow Molding   (1 Topics) (0 Subtopics) (1 Notes )   (5 Patent Titles )   (2 Patent Abstracts ) (4/8/2016)

D. Injection Compression Molding (01 Topics) (0 Subtopics) (2 Notes) (2 Patent Titles) (2 Patent Abstracts) (4/5/2016)

D. Injection Molding Applications   (1 Topics) (0 Subtopics) (1 Notes )   (101 Patent Titles )   (0 Patent Abstracts ) (3/23/2016)

D. Injection Molding Controls  (1 Topics) (0 Subtopics) (1 Notes )   (5 Patent Titles )   (2 Patent Abstracts) (3/25/2016)

D. Injection Molding Machines   (1 Topics) (0 Subtopics) (1 Notes )   (43 Patent Titles )   (1 Patent Abstracts ) (3/4/2016)

D. Injection Molding Operations (1 Topics) (0 Subtopics) (1 Notes) (2 Patent Titles) (1 Patent Abstracts) (3/30/2016)

D Reaction Injection Molding (RIM) (1 Topics) (0 Subtopics) (1 Notes(0 Patent Titles) (0 Patent Abstracts) (4/11/2016)

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3 Notes

1. Injection Molding

2. Injection Molding Machine

3. Two Step Injection Molding

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3. Two Step Injection Molding

Injection molding is one of the most popular processes for manufacturing plastic products. In some cases, a molded part is modified by a second molding step.   Transferring a molding object is difficult and cumbersome preventing cost effective high volume molding.

Stanley, Bredall and Stiehl developed a transfer tool for two step injection molding process for high volume in which molded parts are transferred from one injection molding tool to another injection molding tool without separating the molded part from runners and without degating. The single step transfer, which can be performed without degating and without separating the molded parts from one another, can reduce cycle time as well as complexity.  The second tool has cavity spacing that matches the cavity spacing of the first tool and a device for removing the gate before the second molding.

8,894,399  (11/25/2014)
Injection molding tool with integrated gate removal for high-volume manufacturing

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2. Injection Molding Machine

"In plastic injection molding systems, an injection molding machine melts plastic material and then injects the molten plastic material through a machine nozzle into a mold cavity."

                    injector1.gif (62719 bytes)

Figure from Underwriters' Website: http://www.cheresources.com/injectionzz.shtml

 

Goinski, US Patent 7,404,713 (7/29/2008)

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1. Injection Molding

1. “Injection molding (British English: moulding) is a manufacturing process for producing parts by injecting material into a mold. Injection molding can be performed with a host of materials, including metals, glasses, elastomers, confections, and most commonly thermoplastic and thermosetting polymers. Material for the part is fed into a heated barrel, mixed, and forced into a mold cavity where it cools and hardens to the configuration of the cavity.[1]:240 After a product is designed, usually by an industrial designer or an engineer, molds are made by a moldmaker (or toolmaker) from metal, usually either steel or aluminum, and precision-machined to form the features of the desired part. Injection molding is widely used for manufacturing a variety of parts, from the smallest components to entire body panels of cars.

Parts to be injection molded must be very carefully designed to facilitate the molding process; the material used for the part, the desired shape and features of the part, the material of the mold, and the properties of the molding machine must all be taken into account. The versatility of injection molding is facilitated by this breadth of design considerations and possibilities.”

(Injection Molding, Wikipedia, 10/23/2013)

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Copyright 2016 by Roger D. Corneliussen.
No part of this transmission is to be duplicated in any manner or forwarded by electronic mail without the express written permission of Roger D. Corneliussen

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Roger D. Corneliussen, Editor
Professor Emeritus
Materials Engineering
Drexel University, Philadelphia, PA
Editor
Maro Publications
Telephone: 610 363 1533
Email:
cornelrd@bee.net
Website: 
http://maropolymeronline.com/