JPS5569618A - Polyester resin for packaging - Google Patents

Polyester resin for packaging

Info

Publication number
JPS5569618A
JPS5569618A JP14304078A JP14304078A JPS5569618A JP S5569618 A JPS5569618 A JP S5569618A JP 14304078 A JP14304078 A JP 14304078A JP 14304078 A JP14304078 A JP 14304078A JP S5569618 A JPS5569618 A JP S5569618A
Authority
JP
Japan
Prior art keywords
fluid
polyester resin
reduced pressure
room temperature
gas
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.)
Pending
Application number
JP14304078A
Other languages
Japanese (ja)
Inventor
Yoshio Imamura
Masao Murano
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.)
Toyobo Co Ltd
Original Assignee
Toyobo Co Ltd
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
Application filed by Toyobo Co Ltd filed Critical Toyobo Co Ltd
Priority to JP14304078A priority Critical patent/JPS5569618A/en
Publication of JPS5569618A publication Critical patent/JPS5569618A/en
Pending legal-status Critical Current

Links

Landscapes

  • Wrappers (AREA)
  • Polyesters Or Polycarbonates (AREA)

Abstract

PURPOSE: To reduce the acetaldehyde content of a polyester resin and to improve its safety as a food-packaging material, by passing a specifically formed polyethylene terephthalate through a fluid or reduced pressure atmosphere.
CONSTITUTION: A polyester prepared by melt polymerization, consisting mainly of ethylene terephthalate unit, and having an intrinsic viscosity of ≥0.50, is melt- formed into fibers or films having a specific surface area of ≥50cm2/g (pref. ≥100cm2/g). The formed articles are passed through a fluid (e.g. air, nitrogen, steam, etc. as a gas and water as a liquid) or reduced pressure atmosphere to give an acetaldehyde content of ≤20ppm. The contact of the polymer with a fluid is preferably carried out at room temperature to 150°C for 1W15min. for a gas, or at room temperature to 100°C for 5W20min. for water.
COPYRIGHT: (C)1980,JPO&Japio
JP14304078A 1978-11-20 1978-11-20 Polyester resin for packaging Pending JPS5569618A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14304078A JPS5569618A (en) 1978-11-20 1978-11-20 Polyester resin for packaging

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14304078A JPS5569618A (en) 1978-11-20 1978-11-20 Polyester resin for packaging

Publications (1)

Publication Number Publication Date
JPS5569618A true JPS5569618A (en) 1980-05-26

Family

ID=15329500

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14304078A Pending JPS5569618A (en) 1978-11-20 1978-11-20 Polyester resin for packaging

Country Status (1)

Country Link
JP (1) JPS5569618A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5648032A (en) * 1995-08-01 1997-07-15 Eastman Chemical Company Process for producing polyester articles having low acetaldehyde content
JP2007503341A (en) * 2003-05-21 2007-02-22 レール・リキード−ソシエテ・アノニム・ア・ディレクトワール・エ・コンセイユ・ドゥ・スールベイランス・プール・レテュード・エ・レクスプロワタシオン・デ・プロセデ・ジョルジュ・クロード Method and apparatus for the production of polyethylene terephthalate preforms
US7863405B2 (en) 2004-09-02 2011-01-04 Eastman Chemical Company Removal of residual acetaldehyde from polyester polymer particles

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5080390A (en) * 1973-11-16 1975-06-30
JPS5373288A (en) * 1976-12-13 1978-06-29 Teijin Ltd Preparation of polyester pellets

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5080390A (en) * 1973-11-16 1975-06-30
JPS5373288A (en) * 1976-12-13 1978-06-29 Teijin Ltd Preparation of polyester pellets

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5648032A (en) * 1995-08-01 1997-07-15 Eastman Chemical Company Process for producing polyester articles having low acetaldehyde content
JP2007503341A (en) * 2003-05-21 2007-02-22 レール・リキード−ソシエテ・アノニム・ア・ディレクトワール・エ・コンセイユ・ドゥ・スールベイランス・プール・レテュード・エ・レクスプロワタシオン・デ・プロセデ・ジョルジュ・クロード Method and apparatus for the production of polyethylene terephthalate preforms
US7863405B2 (en) 2004-09-02 2011-01-04 Eastman Chemical Company Removal of residual acetaldehyde from polyester polymer particles

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