发明名称 |
Peel film for container - contains co:polyester and thermoplastic polymer of acetal], acrylic], amide], carbonate], ester], olefin], styrene] or vinyl] type, which acts as seal during sterilisation and storage |
摘要 |
Peel film for containers contains 40-97 (wt.)% copolyester(s) (I) and 3-60% thermoplastic acetal, acrylic, amide, carbonate, ester, olefin, styrene or vinyl polymer(s) (II). If (I) is based on polybutylene terephthalate (PBT), in which 50-90 mol% of the acid component is terephthalic acid and 80-100 mol% of the diol component butanediol, then (II) is not a polyester. Pref. the film contains 75-90% (I) and 10-25% (II). (I) is a polyethylene terephthalate glycolate (PETG) or a copolymer of terephthalic acid and ethylene glycol and a mixt. of isophthalic acid, 1,4-cyclohexanedimethanol and diethylene glycol; and (II) is a polyolefin. The film may contain 3-20% filler. The film is the top or outer layer of a film composite or laminate and is 5-250 microns thick. USE/ADVANTAGE - The film is used for making easily opened containers and may also act as sealing film (claimed). It is useful for sealing e.g. bags, pots and dishes. The film is easy to apply to containers and/or covers and gives a satisfactory seal during sterilisation and storage.
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申请公布号 |
CH682996(A5) |
申请公布日期 |
1993.12.31 |
申请号 |
CH19910001437 |
申请日期 |
1991.05.14 |
申请人 |
ALUSUISSE-LONZA SERVICES AG |
发明人 |
CHRISTEL, ANDREAS;HARTMANN, HELEN;NAEGELI, HANS-RUDOLF |
分类号 |
B32B27/08;B65D17/40;B65D65/40;(IPC1-7):B65D17/40;B32B27/28 |
主分类号 |
B32B27/08 |
代理机构 |
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代理人 |
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主权项 |
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