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US 2013/0095335 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
Claims32
A multi-layer polymeric film comprising:
- one or more structural layers of homogenous polypropylene 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 polypropylene-based plastomer/elastomer sealant layers having a melt flow rate from 0.5 to 10 MFR;
- wherein the multi-layer polymeric film has an elongation at break of greater than 400%, puncture strength greater than 7 lbs;
- Spencer impact of more than 800 mJ;
- a delamination strength of greater than 1500 gf/in;
- seal initiation temperature less than or equal to 120° C.;
- a seal strength in the range of 100-2000 gf/in,
- wherein the elongation at break is measured in accordance with ASTM D 882;
- puncture strength is measured in accordance with ASTM D 7192;
- Spencer impact is measured in accordance with ASTM D 3420;
- and ultimate seal strength is measured in accordance with ASTM F88-07a.
9 more elements
A multi-layer polymeric film comprising:
- a linear low density polyethylene (LLDPE) blend sealant layer having a primary Metallocene LLDPE component with a a second structural layer of random copolymer polypropylene having a melt flow rate from 0.5 to 10 MFR;
- a third structural layer of homogenous polypropylene having a melt flow rate from 0.5 to 10 MFR;
- a fourth structural layer of random copolymer polypropylene having a melt flow rate from 0.5 to 10 MFR;
- and a linear low density polyethylene (LLDPE) blend sealant layer having a primary Ziegler-Natta LLDPE component with;
- 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 delamination strength of greater than 1500 gf/in;
- 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.
8 more elements
A multi-layer polymeric film comprising:
- a first polypropylene-based plastomer/elastomer sealant layer,
- a second structural layer of random copolymer polypropylene having a melt flow rate from 0.5 to 10 MFR;
- a third structural layer of homogenous polypropylene having a melt flow rate from 0.5 to 10 MFR;
- a fourth structural layer of random copolymer polypropylene having a melt flow rate from 0.5 to 10 MFR;
- a fifth polypropylene-based plastomer/elastomer sealant layer;
- wherein the multi-layer polymeric film has an elongation at break of greater than 400%, puncture strength greater than 7 lbs;
- Spencer impact of more than 800 mJ;
- a delamination strength of greater than 1500 gf/in;
- seal initiation temperature less than or equal to 120° C.;
- a seal strength in the range of 100-2000 gf/in,
- wherein the elongation at break is measured in accordance with ASTM D 882;
- puncture strength is measured in accordance with ASTM D 7192;
- Spencer impact is measured in accordance with ASTM D 3420;
- and ultimate seal strength is measured in accordance with ASTM F88-07a.
11 more elements
A multi-layer polymeric film comprising:
- a first polypropylene-based plastomer/elastomer sealant layer,
- a second structural layer of homogenous polypropylene having a melt flow rate from 0.5 to 10 MFR;
- a third structural layer of random copolymer polypropylene having a melt flow rate from 0.5 to 10 MFR;
- a fourth structural layer of homogenous polypropylene having a melt flow rate from 0.5 to 10 MFR;
- a fifth polypropylene-based plastomer/elastomer sealant layer;
- wherein the multi-layer polymeric film has an elongation at break of greater than 400%, puncture strength greater than 7 lbs;
- Spencer impact of more than 800 mJ;
- a delamination strength of greater than 1500 gf/in;
- seal initiation temperature less than or equal to 120° C.;
- a seal strength in the range of 100-2000 gf/in,
- wherein the elongation at break is measured in accordance with ASTM D 882;
- puncture strength is measured in accordance with ASTM D 7192;
- Spencer impact is measured in accordance with ASTM D 3420;
- and ultimate seal strength is measured in accordance with ASTM F88-07a.
11 more elements
Dependencies are inferred from the claim text.