Invention Grant
- Patent Title: Textured porous barrier transfer casing
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Application No.: US16055443Application Date: 2018-08-06
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Publication No.: US11134693B2Publication Date: 2021-10-05
- Inventor: Frank Raue , Jeremey Hinkle
- Applicant: Viscofan S.A.
- Applicant Address: ES Navarra
- Assignee: Viscofan S.A.
- Current Assignee: Viscofan S.A.
- Current Assignee Address: ES Navarra
- Agency: Maine Cernota & Rardin
- Main IPC: A22C13/00
- IPC: A22C13/00 ; B32B1/08 ; B32B3/26 ; B32B5/20 ; B32B7/12 ; B32B27/06 ; B32B27/08 ; B32B27/20 ; B32B27/30 ; B32B27/32 ; B32B27/34 ; B32B27/36 ; B65D65/38 ; B65D85/08 ; B29L7/00 ; B29L9/00

Abstract:
The present invention provides a multi-layered coextruded thermoplastic food casing comprising: at least one thermoplastic porous absorbing layer; and at least one layer having a barrier effect for water vapor and/or oxygen, wherein the at least one layer having a barrier effect for water vapor and/or oxygen has an average layer thickness in a range of from 5 to 60 μm over the entire surface area, wherein the at least one thermoplastic porous absorbing layer comprises as a main component at least one thermoplastic polymer material selected from the group consisting of (co)polyamides and (co)polyolefins, wherein the at least one thermoplastic porous absorbing layer comprises areas having a reduced average layer thickness and areas having a non-reduced average layer thickness, wherein the average layer thickness of the at least one thermoplastic porous absorbing layer in areas having a non-reduced average layer thickness is in a range of from 10 to 200 μm, wherein the average layer thickness in areas having a reduced average layer thickness is lower by 7 to 140 μm and is reduced by a range of from 30 to 85% compared to the areas having a non-reduced average layer thickness of the at least one thermoplastic porous absorbing layer, and wherein both areas having a reduced average layer thickness and a non-reduced average layer thickness comprise pores which are able to absorb a functional additive.
Public/Granted literature
- US20200037622A1 TEXTURED POROUS BARRIER TRANSFER CASING Public/Granted day:2020-02-06
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