CA2480523A1 - Method of injection molding polyethylene terephthalate - Google Patents
Method of injection molding polyethylene terephthalateInfo
- Publication number
- CA2480523A1 CA2480523A1 CA002480523A CA2480523A CA2480523A1 CA 2480523 A1 CA2480523 A1 CA 2480523A1 CA 002480523 A CA002480523 A CA 002480523A CA 2480523 A CA2480523 A CA 2480523A CA 2480523 A1 CA2480523 A1 CA 2480523A1
- Authority
- CA
- Canada
- Prior art keywords
- polyethylene terephthalate
- injection
- screw
- feed
- injection molding
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Injection Moulding Of Plastics Or The Like (AREA)
Abstract
A method of injecting molding polyethylene terephthalate is provided in which polyethylene terephthalate having irregular size and shape is forcedly fed from a material feeder by rotation of a feed screw therein into the rear portion of an injection cylinder having an injection screw to plasticate the polyethylene terephthalate, and the PET is injection molded into a required molded article. The material feed is performed by detecting the rotational torque of the injection screw in correspondence with the revolution speed of the feed screw during material feed and setting the revolution speed of the feed screw taking the flection point of the rotational torque as a guide.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6-59788 | 1994-03-07 | ||
JP6059788A JP2673491B2 (en) | 1994-03-07 | 1994-03-07 | Amorphous molding material supply method |
CA002143041A CA2143041C (en) | 1994-03-07 | 1995-02-21 | Method of injection molding polyethylene terephthalate |
Related Parent Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA002143041A Division CA2143041C (en) | 1994-03-07 | 1995-02-21 | Method of injection molding polyethylene terephthalate |
Publications (2)
Publication Number | Publication Date |
---|---|
CA2480523A1 true CA2480523A1 (en) | 1995-09-08 |
CA2480523C CA2480523C (en) | 2008-04-08 |
Family
ID=33435746
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA002480523A Expired - Lifetime CA2480523C (en) | 1994-03-07 | 1995-02-21 | Method of injection molding polyethylene terephthalate |
Country Status (1)
Country | Link |
---|---|
CA (1) | CA2480523C (en) |
-
1995
- 1995-02-21 CA CA002480523A patent/CA2480523C/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
CA2480523C (en) | 2008-04-08 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
EEER | Examination request | ||
MKEX | Expiry |
Effective date: 20150223 |