Laminated nonwoven webs derived from polymers of lactic acid and

Details Laminated nonwoven webs derived from polymers of lactic acid and Laminated nonwoven webs derived from polymers of lactic acid and

1995-10-12

1997-12-30

Lee, Helen

Stock material or miscellaneous articles

Composite

Of addition polymer from unsaturated monomers

442329, 442383, 442384, 442392, 442395, 442401, 442402, 442408, B32B 2308, B32B 2700

Patent

active

057028265

ABSTRACT:
The present invention relates to a composite structure comprising one or more plies of nonwoven and one or more plies of film, these being manufactured from thermoplastics, wherein all the plies making up the structure, for example (12, 13, 14), are totally manufactured from a member of the group: a polymer derived from lactic acid, a copolymer of lactic acid, a blend of polymers derived from lactic acid.
The invention also relates to a process for obtaining said composite structure.

REFERENCES:
patent: 4743257 (1988-05-01), Tormala et al.
patent: 5097005 (1992-03-01), Tietz
patent: 5216050 (1993-06-01), Sinclair
patent: 5359026 (1994-10-01), Gruber
patent: 5472518 (1995-12-01), Patnode et al.

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