Invention Grant
- Patent Title: Butene-1 copolymer tie layer in multilayer film structures having a low seal temperature and improved hot tack
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Application No.: US14896638Application Date: 2014-05-06
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Publication No.: US10814588B2Publication Date: 2020-10-27
- Inventor: Michele Grazzi , Roberta Marchini , Giampaolo Pellegatti , Stefano Spataro
- Applicant: BASELL POLIOLEFINE ITALIA S.R.L.
- Applicant Address: IT Milan
- Assignee: Basell Poliolefine Italia S.r.l.
- Current Assignee: Basell Poliolefine Italia S.r.l.
- Current Assignee Address: IT Milan
- Priority: com.zzzhc.datahub.patent.etl.us.BibliographicData$PriorityClaim@66e328e4
- International Application: PCT/EP2014/059197 WO 20140506
- International Announcement: WO2014/195072 WO 20141211
- Main IPC: B32B7/12
- IPC: B32B7/12 ; B32B27/08 ; B32B27/32
Abstract:
Multilayer film (BOPP) structure containing at least: A) a skin (outer) layer substantially consisting of a crystalline low seal Initiation temperature propylene copolymer; B) a tie layer substantially consisting of a butene-1 copolymer having flexural modulus (MEF) of 75 MPa or less; C) a core layer substantially consisting of one or more polypropylene homopolymers designed for BOPP.
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