Claims
- 1. A method of making a multilayered container comprising (1) laminating a layer of molten polyethylene terephthalate (A) and a layer of polyester (B) consisting of a dicarboxylic acid component containing isophthalic acid in an amount exceeding 20 molar % and a glycol component comprising ethylene glycol in an amount exceeding 80 molar %, while layer (A) and layer (B) are maintained at a temperature of 230.degree. to 350.degree. C. and 180.degree. to 260.degree. C., respectively, under a pressure (gauge) of 20 kg/cm.sup.2 or higher; (2) cooling and solidifying the laminate to a temperature of -10 to 30.degree. C. so as to prepare a preform which comprises essentially of the layer of polyethylene terephthalate (A) and the layer of polyester (B); and (3) biaxially orienting and blow molding the preform at an orientation temperature of 80.degree. to 130.degree. C. under drawing of at least 1.5 times in the axial direction and at least 2 times in the radial directions.
- 2. The method of claim 1, wherein the amount of isophthalic acid in the polyester (B) is 30 molar % or more.
Priority Claims (1)
Number |
Date |
Country |
Kind |
57-198898 |
Nov 1982 |
JPX |
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Parent Case Info
This application is a continuation-in-part of application Ser. No. 552,189, filed Nov. 15, 1983, abandoned.
US Referenced Citations (4)
Continuation in Parts (1)
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Number |
Date |
Country |
Parent |
552189 |
Nov 1983 |
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