CA2480523A1 - Method of injection molding polyethylene terephthalate - Google Patents

Method of injection molding polyethylene terephthalate

Info

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
Application number
CA002480523A
Other languages
French (fr)
Other versions
CA2480523C (en
Inventor
Hidemi Aoki
Yasuhiko Takeuchi
Kazuo Anzai
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nissei Plastic Industrial Co Ltd
Original Assignee
Individual
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Priority claimed from JP6059788A external-priority patent/JP2673491B2/en
Application filed by Individual filed Critical Individual
Publication of CA2480523A1 publication Critical patent/CA2480523A1/en
Application granted granted Critical
Publication of CA2480523C publication Critical patent/CA2480523C/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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.
CA002480523A 1994-03-07 1995-02-21 Method of injection molding polyethylene terephthalate Expired - Lifetime CA2480523C (en)

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)

Also Published As

Publication number Publication date
CA2480523C (en) 2008-04-08

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Effective date: 20150223