Title:
LAMINATE, HEAT-SHRINKING LAMINATE FILM, AND FOAMED LAMINATE
Document Type and Number:
WIPO Patent Application WO/1991/010561
Kind Code:
A1
Abstract:
A laminate composed of at least two layers comprising a barrier base material and an ethylene copolymer layer containing carbon-to-carbon unsaturated bonds and optionally further a polyolefin composition layer; a heat-shrinking laminate film; and a laminate and a heat-shrinking foamed laminate film each further containing a foamed layer. The laminate is excellent in heat sealability and oil resistance, is optionally cross-linked dependent on the purpose of use, and is useful not only as a nonshrinking packaging material for chilled beef but also as a food packaging material for conventional sleeve or boiling packaging. Since the heat-shrinking laminate film contains an ethylene copolymer which can be crosss-linked efficiently, it can be cross-linked with an ionizing radiation under a milder condition in a shorter time than before, thus providing a high-performance laminate more economically and safely without causing the deterioration of the barrier base material. The laminate and heat-shrinking foamed laminate film containing the foamed layer are excellent in heat insulation, shock absorption and flexibility while retaining high barrier properties, heat sealability and high shrinkability.
Inventors:
FUKUI HIROFUMI (JP)
SUZUKI AKIRA (JP)
SUZUKI AKIRA (JP)
Application Number:
PCT/JP1991/000014
Publication Date:
July 25, 1991
Filing Date:
January 11, 1991
Export Citation:
Assignee:
NIPPON PETROCHEMICALS CO LTD (JP)
International Classes:
B32B5/18; B32B7/02; B32B27/16; B32B27/28; B32B27/30; B32B27/32; (IPC1-7): B32B5/18; B32B7/02
Foreign References:
| JPS5684949A | 1981-07-10 | |||
| JPS623948A | 1987-01-09 | |||
| JPS635262B2 | 1988-02-02 |
Other References:
See also references of EP 0481081A4
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