Heat-sealable lactic acid-based polymer laminates

Details Heat-sealable lactic acid-based polymer laminates Heat-sealable lactic acid-based polymer laminates

1998-05-21

2000-11-28

Robinson, Ellis

Stock material or miscellaneous articles

Hollow or container type article

Nonself-supporting tubular film or bag

428 357, 4284111, 428532, 383109, B32B 2700, B32B 2742, B65D 3008

Patent

active

061532762

ABSTRACT:
Disclosed is a heat-sealable lactic acid-based polymer laminates which have heat resistance of 60.degree. C. or above, high sealing strength and good biodegradability and are useful in various films, sheets, packaging containers, etc., comprising a base layer (I) made of a crystallized lactic acid-based polymer (A) and a sealing layer (II) made of an amorphous lactic acid-based polymer (B) having a softening point lower than the melting point of said lactic acid-based polymer (A), and films, sheets or packaging containers with the use of these laminates.

REFERENCES:
patent: 5691424 (1997-11-01), Suzuki et al.
patent: 5849374 (1998-12-01), Gruber et al.
Polymer Science Dictionary, Second Edition, Edited by Mark Alger, p. 515, Jan. 1997.

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