Sealant resin composition for use in retort film and sealant film
AssigneeMitsui Chemicals, Inc.
InventorsNaoshi Hamada, Sadamu Hirakawa, Shigeo Ozaki
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Abstract
A sealant resin composition for retort packaging film comprises a high density polyethylene as the main resin component and a linear low density polyethylene polymerized by use of the metallocene catalyst. A sealant film produced therefrom is resistant to whitening, heat fusion, heat deformation after being subjected to boiling sterilization treatment and prevent breakage of pouches produced therefrom even at low temperatures because of its high impact strength and heat sealing strength.
Claims11
A sealant resin composition useful for retort film comprising:
- (A) 60 to 90 parts by weight of high density polyethylene having a density of 0.945 to 0.970 g/cm.sup.3 and a melt flow rate of 0.5 to 10 g/10 minutes, as measured at a temperature of 190.degree. C., and a load of 2.16 kg, according to the method of ASTM D-1238;
- and,
- (B) 10 to 40 parts by weight of linear low density polyethylene prepared by using a metallocene catalyst, and having a density of 0.890 to 0.925 g/cm.sup.3 and a melt flow rate of 0.5 to 10 g/10 minutes as measured at a temperature of 190.degree. C., and a load of 2.16 kg, according to the method of ASTM D-1238,
- wherein the total amount of (A) and (B) is 100 parts by weight.
A sealant film useful for sealing a retort film, said sealant film formed from a resin composition comprising:
- (A) 60 to 90 parts by weight of high density polyethylene having a density of 0.945 to 0.970 g/cm.sup.3 and a melt flow rate of 0.5 to 10 g/10 minutes, as measured at a temperature of 190.degree. C., and a load of 2.16 kg, according to the method of ASTM D-1238;
- and,
- (B) 10 to 40 parts by weight of linear low density polyethylene prepared by using a metallocene catalyst, and having a density of 0.890 to 0.925 g/cm.sup.3 and a melt flow rate of 0.5 to 10 g/10 minutes as measured at a temperature of 190.degree. C., and a load of 2.16 kg, according to the method of ASTM D-1238, wherein the total amount of (A) and (B) is 100 parts by weight.
Dependencies are inferred from the claim text.