Polyethylene terephthalate foams with integral crystalline skins

Details Polyethylene terephthalate foams with integral crystalline skins Polyethylene terephthalate foams with integral crystalline skins

1992-04-21

1993-01-26

Foelak, Morton

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Cellular products or processes of preparing a cellular...

264 455, 521 97, 521182, C08J 934

Patent

active

051823071

ABSTRACT:
Polyethylene terephthalate composite structures having integral crystalline skins on a foam of polyethylene terephthalate are described. The structures exhibit enhanced physical properties compared to polyethylene terephthalate foams. The structures are produced by a method that crystallizes a portion of the polyethylene terephthalate before foaming the uncrystallized portions of the structure.

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Research Report to Kraft, Inc. entitled Experiments in Microcellular Foaming of Polyethylene Terephthalate, Laboratory for Manufacturing and Productivity, Massachusetts Institute of Technology, Project No. 70491, dated Aug. 1988 by Vipin Kumar and Nam P. Suh.
Process Synthesis for Manufacturing Microcellular Thermoplastic Parts: A Case Study in Axiomatic Design, by Vipin Kumar and N. P. Suh, Department of Mechanical Engineering and Laboratory for Manufacturing and Productivity, Massachusetts Institute of Technology, from Proceedings as ASME MI '88, Atlanta, Ga., Apr. 1988, vol. I, pp. 29-38.
Abstract for Crystalline PET Foams: CO.sub.2 -Induced Changes in PET Morphology, by Vipin Kumar and Osman S. Gebizlioglu, scheduled to be presented at Polymer-Processing Society Annual Meeting, Hamilton, Ontario, Apr. 21-24, 1991.
Carbon Dioxide-Induced Crystalization in PET Foams by Vipin Kumar and Osmund S. Gebizlioglu, presented at Society of Plastics Engineers Annual Meeting, Montreal, Ontario, May 5-10, 1991.
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