EP0198091A1
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EP
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Film for stretch wrapping
Assignee: Mitsubishi Chemical Corp
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Filing: 1985-10-07
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Granted: —
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Expires: 2005-10-07
Abstract
Abstract A film for tretch wrapping having extremely excellent tear strength and deformation recovery properties, which comprises an interlayer mainly composed of butene-1 resin- containing a-olefin resin having on both sides thereof surface layers mainly composed of a ethylene-vinyl acetate copolymer resin.
Inventors
- 👤 Takao Plastics Laboratory Mitsubishi Yazaki
- 👤 Masataka Plastics Laboratory Mitsubishi Noro
- 👤 Takashi Plastics Laboratory Mitsubishi Matsui
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-07 11:31
CPC Classifications
B; B32; B32B; B32B27/00; B32B27/06; B32B27/08; B32B27/30; B32B27/306; B32B27/32; B32B2553/00; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24942; Y10T428/2495; Y10T428/24967; Y10T428/24975; Y10T428/24992; Y10T428/31504; Y10T428/31786; Y10T428/31855; Y10T428/31909; Y10T428/31913; Y10T428/3192; Y10T428/31928
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
64 words
A film for use in stretch-packaging which comprises an intermediate layer that has as its main component an α-olefin-series resin component containing a butene-I-series resin and at least two surface layers each containing as its main component an ethylene-vinyl acetate copolymer resin with a vinyl acetate content of 5 to 25 wt%, the surface layers being laminated over both surfaces of the intermediate layer.
Claim 2
Dependent Claim
64 words
A film for use in stretch-packaging which comprises an intermediate layer that has as its main component an α-olefin-series resin component containing a butene-I-series resin and at least two surface layers each containing as its main component an ethylene-vinyl acetate copolymer resin with a vinyl acetate content of 5 to 25 wt%, the surface layers being laminated over both surfaces of the intermediate layer.
Claim 3
Dependent Claim
35 words
A stretch-packaging film according to claim l,wherein the a-olefin-series resin component in the intermediate layer consists of 10 to 90 wt% of the butene-I-series resin and 90 to 10 wt% of other a-olefin-series copolymer resin.
Claim 4
Dependent Claim
35 words
A stretch-packaging film according to claim l,wherein the a-olefin-series resin component in the intermediate layer consists of 50 to 85 wt% of the butene-1-series resin and 50 to 15 wt% of other a-olefin-series copolymer resin.
Claim 5
Dependent Claim
59 words
A stretch-packaging film according to claim 2 or 3, wherein said other a-olefin-series copolymer resin is a propylene-a-olefin random copolymer resin which is a copolymer of propylene and at least one a-olefin selected from among ethylene and the a-olefins having 4 to 8 carbon atoms, the content of said a-olefin being in the range of 4 to 19 wt%.
Claim 6
Dependent Claim
56 words
A stretch-packaging film according to claim 2 or 3, wherein said other a-olefin-series copolymer resin is an ethylene-a-olefin copolymer resin which is a copolymer of ethylene and at least one a-olefin selected from among the a-olefins having 3 to 8 carbon atoms, the content of said α-olefin being in the range of 6 to 16 wt%.
Claim 7
Dependent Claim
77 words
A stretch-packaging film according to claim 2 or 3, wherein said other a-olefin-series copolymer resin is a mixture of a propylene-a-olefin random copolymer resin and an ethylene-vinyl acetate copolymer resin with a vinyl acetate content of 5 to 25 wt%, said random copolymer resin being a copolymer of propylene and at least one a-olefin selected from among ethylene and the a-olefins having 4 to 8 carbon atoms, the content of said a-olefin being 4 to 19 wt%.
Claim 8
Dependent Claim
74 words
A stretch-packaging film according to claim 2 or 3, wherein said other a-olefin-series copolymer resin is a mixture of an ethylene-a-olefin copolymer resin and an ethylene-vinyl acetate copolymer resin with a vinyl acetate content of 5 to 25 wt%, said ethylene-a-olefin copolymer resin being a copolymer of ethylene and at least one a-olefin selected from among the a-olefins having 3 to 8 carbon atoms, the content of said a-olefin being 6 to 16 wt%.
Claim 9
Dependent Claim
54 words
A stretch-packaging film according to claim l,wherein said intermediate layer and each of said surface layers contains 0.5 to 5 wt% of an aliphatic alcohol-series fatty acid ester compound which is the reaction product of an aliphatic alcohol having 1 to 12 carbon atoms and a fatty acid having 10 to 22 carbon atoms.
References Cited (Backward Citations)
No citation records indexed.
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