发明公开
EP0397622A2 Improvements to printable self-adhesive tapes with polyolefin substrates
失效
Bedruckbare selbstklebendeBändermit Polyolefinsubstraten。
- 专利标题: Improvements to printable self-adhesive tapes with polyolefin substrates
- 专利标题(中): Bedruckbare selbstklebendeBändermit Polyolefinsubstraten。
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申请号: EP90830202.9申请日: 1990-05-08
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公开(公告)号: EP0397622A2公开(公告)日: 1990-11-14
- 发明人: Maietti, Adriano
- 申请人: VIBAC S.p.A.
- 申请人地址: Strada Ticineto Salita San Salvatore I-15040 Ticineto (Alessandria) IT
- 专利权人: VIBAC S.p.A.
- 当前专利权人: VIBAC S.p.A.
- 当前专利权人地址: Strada Ticineto Salita San Salvatore I-15040 Ticineto (Alessandria) IT
- 代理机构: Rambelli, Paolo
- 优先权: IT6735889 19890512
- 主分类号: C09J7/02
- IPC分类号: C09J7/02 ; C09D11/10
摘要:
A pressure-sensitive and printable self-adhesive tape of the type including a substrate in the form of a polyolefin film has a release layer deposited on one face of the substrate, including from 50 to 62 parts by weight of polyamide resin produced by the condensation of fatty acid dimers and/or trimers with diamines and/or triamines, from 30 to 42 parts by weight of ketone resin, and from 5 to 10 parts by weight of a release agent constituted by a polyvinyl carbamate obtained from stearyl isocyanate and a polyvinyl alcohol having a Brookfield viscosity of between 5 and 45 cPs (20-45 10⁻³ Pascal seconds). In order to prevent set-off phenomena, particularly for self-adhesive tapes in which the adhesive layer is of the type with a solvent, a commercially-available type of polyamide ink is used with a polyvinyl carbamate additive produced from a polyvinyl alcohol having a preferred viscosity of between 4 and 6 cPs (4-6 10⁻³ Pascal seconds).
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