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US 2003/0143416 A1Published application
Layered film and packaging product thereof
AssigneeShowa Denko Plastic Products Co., Ltd.
InventorsKazuyuki Watanabe, Takao Nasu
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AssigneeShowa Denko Plastic Products Co., Ltd.
InventorsKazuyuki Watanabe, Takao Nasu
Estimating the term…
The object of the present invention is to provide a layered film which exhibits, when used as a sealant film, excellent openability, good clouding property, high water vapor barrier property and superior seal strength stability and which is suitable as a medical packaging material, and to provide a packaging product thereof. The layered film comprises at least two layers of a resin composition layer [layer (A)] comprising (a) from 60 to 90% by mass of linear low-density polyethylene produced using a single site catalyst and (b) from 40 to 10% by mass of a polybutene-1, and a high-density polyethylene layer [layer (B)] comprising (c) a high-density polyethylene having a density of 0.950 to 0.970 (g/cm3). The packaging product has the layer (A) of the layered film as a sealant layer.
A layered film comprising at least two layers of a resin composition layer [layer (A)] comprising (a) from 60 to 90% by mass of a linear low-density polyethylene produced using a single site catalyst and (b) from 40 to 10% by mass of a polybutene-1, and a high-density polyethylene layer [layer (B)] comprising (c) a high-density polyethylene having a density of 0.950 to 0.970 (g/cm3).
A packaging product comprising sealant layers, wherein the sealant layer is a layer (A) of a layered film comprising at least two layers of a resin composition layer [layer (A)] comprising (a) from 60 to 90% by mass of a linear low-density polyethylene produced using a single site catalyst and (b) from 40 to 10% by mass of a polybutene-1, and a high-density polyethylene layer [layer (B)] comprising (c) a high-density polyethylene having a density of 0.950 to 0.970 (g/cm3).
A layered film comprising at least two layers of a linear low-density polyethylene layer [layer (C)] comprising (d) a linear low-density polyethylene, which is produced using a single site catalyst, having a density of 0.890 to 0.925 (g/cm3) and a melt flow rate of 2 to 10 (g/10 min), and a high-density polyethylene layer [layer (D)] comprising (e) a high-density polyethylene having a density of 0.950 to 0.970 (g/cm3).
Dependencies are inferred from the claim text.