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US 2013/0095336 A1Published application
Film Composition for Controlled Peelable Seal Film
AssigneeBecton, Dickinson and Company
InventorTheresa Hermel-Davidock
Life of this patent
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Abstract
The present invention provides polymeric film and, more particularly, a multi-layer polymeric film including one or more structural layers of homogenous polypropylene; one or more structural layers of random copolymer polypropylene; one or more anhydride modified polyethylene based tie layers; one or more linear low density polyethylene (LLDPE) blend sealant layers having a primary LLDPE component, a secondary LLDPE component, and an optional LDPE additive component.
Claims24
A multi-layer polymeric film comprising:
- one or more structural layers of homogenous polypropylene having a melt flow rate from 0.5 to 10 MFR;
- one or more structural layers of random copolymer polypropylene having a melt flow rate from 0.5 to 10 MFR;
- one or more tie layers of anhydride modified polyethylene resin having a melt index from 0.7 to 3.5;
- one or more linear low density polyethylene (LLDPE) blend sealant layers having a primary LLDPE component;
- wherein the multi-layer polymeric film has an elongation at break measured in accordance with ASTM D 882 of greater than 400%, puncture strength greater than 7 lbs measured in accordance with ASTM D 7192;
- Spencer impact strength measured in accordance with ASTM D 3420 of more than 800 mJ;
- a seal initiation temperature less than or equal to 120° C.;
- a seal strength measured in accordance with ASTM F88-07a in the range of 100 gf/in to 2000 gf/in;
- and a seal window greater than 30° C.
6 more elements
A multi-layer polymeric film comprising:
- one or more layers of high density polyethylene (HDPE) having a melt index from 0.7 to 3.5,
- one or more anhydride modified polyethylene based tie layers having a melt index from 0.7 to 3.5;
- one or more structural layers of homogenous polypropylene being not directly exposed to the external environment and having a melt flow rate from 0.5 to 10 MFR;
- one or more structural layers of random copolymer polypropylene having a melt flow rate from 0.5 to 10 MFR;
- one or more linear low density polyethylene (LLDPE) blend sealant layers having a primary LLDPE component;
- wherein the multi-layer polymeric film has an elongation at break measured in accordance with ASTM D 882 of greater than 400%, puncture strength greater than 7 lbs measured in accordance with ASTM D 7192;
- Spencer impact strength measured in accordance with ASTM D 3420 of more than 800 mJ;
- a seal initiation temperature less than or equal to 120° C.;
- a seal strength measured in accordance with ASTM F88-07a in the range of 100 gf/in to 2000 gf/in;
- and a seal window greater than 30° C.
7 more elements
Dependencies are inferred from the claim text.