Permeable membranes having high temperature capabilities
AssigneePechiney Emballage Flexible Europe
InventorsWilliam E. Bowen, Michael Stecker
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Abstract
A multilayer permeable film structure having high temperature capabilities comprising a first, perforated sealable layer; a second primer layer and a third outer layer is disclosed. The multilayer permeable film structure can be heat sealed to a formed tray containing a volatile material.
Claims14
A package comprising a permeable membrane and a formed tray wherein the permeable membrane consists essentially of:
- (d) a first permeable perforated sealable layer wherein said layer comprises a polymer or a blend of polymers wherein the polymer is selected from the group consisting of polyethylene terephthalate, oriented poly(propylene) and nylons;
- (e) a second primer layer;
- and
- (f) a third outer layer.
A permeable membrane having high temperature capabilities for the release of a volatile product wherein the membrane consists essentially of:
- (a) a first permeable perforated scalable layer wherein said layer comprises a polymer or a blend of polymers wherein the polymer is selected from the group consisting of polyethylene terephthalate, oriented poly(propylene) and nylons;
- (b) a second primer layer;
- and
- (c) a third outer layer.
The permeable membrane according to 2 claim wherein said third outer layer comprises a polymer selected from the group consisting of polyethylene, low density polyethylene, high density polyethylene and medium density polyethylene.
A permeable membrane having high temperature capabilities for the release of a volatile product wherein the membrane comprises:
- (a) a first permeable perforated sealable layer wherein said layer comprises a polymer or a blend of polymers wherein the polymer is selected from the group consisting of polyethylene terephthalate, oriented poly(propylene) and nylons;
- (b) a second primer layer comprising a polymer that provides a strong bond between the first and third layer wherein said polymer is polyethylenimine;
- and
- (c) a third outer layer.
Dependencies are inferred from the claim text.