Packaging film

[Patent Name] Packaging Film [Applicant] Mitsui Chemicals Co., Ltd. [Inventor] Nishimura Yoshihiro; Takeuchi Sankao; Sakugo; Tasaki Power [Main Applicant Address] Tokyo, Japan [Application Number] 200480008984.2
【 Application Date 】 2004.04.01
[Examination and announcement number] 1767947
【 Validation announcement date 】 2006.05.03
[Main classification number] B32B27/32(2006.01)I
[Classification] B32B27/32(2006.01)I B65D65/40(2006.01)I
[Priority] 2003.4.3 JP 099976/2003
[Summary Item] 1. A film for packaging, characterized in that it has at least three layers of an inner layer, an intermediate layer, and an outer layer described below, and an intermediate layer is located between the inner layer and the outer layer. They are composed of the following The composition is such that the intermediate layer contains 20 to 75% by weight of (M-2) MFR of an ethylene-α-olefin copolymer having a (M-1) MFR of 0.1 to 100 g/10 min and a density of 0.90 to 0.940 g/cm 3 . 0.001 to 50 g/10 min, high density polyethylene (M-2) having a density of 0.942 to 0.97 g/cm3, 20 to 70 wt%, and (M-3) MFR of 0.01 to 20 g/10 min. A layer composed of a polyethylene resin composition having a density of 5 to 20% by weight of polyethylene, wherein said copolymer (M-1), high-density polyethylene (M-2) and high-pressure low-density polyethylene (M-3) The total amount of ) is 100 parts by weight; the inner layer and the outer layer are respectively composed of a polyethylene resin or resin composition, and the polyethylene resin or the resin composition has an MFR within a range of 0.01 to 20 g/10 minutes and a density of 0.90 to In the range of 0.95 g/cm3, the resin or resin composition of the inner layer and the outer layer may be the same or different.
[Instructions CD-ROM] D0618-1
【International Application】 2004-04-01 PCT/JP2004/004775
【International Publication】 2004-10-21 WO2004/089626 [Abstract] The present invention relates to a film for packaging having at least an inner layer, an intermediate layer and an outer layer. The intermediate layer contains (M-1) MFR. 0.1 to 100 g/10 min, an ethylene-α-olefin copolymer having a density of 0.90 to 0.940 g/cm3, 20 to 75% by weight, (M-2) MFR of 0.001 to 50 g/10 min, and a density of 0.942 to 0.97 g/g The high-density low-density polyethylene having a cm3 density of 20 to 70% by weight and the (M-3) MFR of 0.01 to 20 g/10 minutes is composed of a polyethylene resin composition having a composition of 5 to 20% by weight. The film for packaging has excellent heat-seal strength, gloss, elastic modulus and impact strength, and is thin and strong.
【 Agency 】 Beijing Jikai Intellectual Property Agency Co., Ltd. [Agent] Long Hao