Japan Polyethylene Corporation

Osamu Miyachi

Kei Takahashi

Haruo Ikeda

Satoshi Kanazawa

Fumio Asada

A welding material, comprising a modified polyethylene resin composition (Z) comprising from 0.5 to 95 wt % of a modified polyethylene resin (X) having at least one monomer selected from the group consisting of an unsaturated carboxylic acid and its derivative, grafted to a polyethylene resin (A) having a density of from 0.910 to 0.965 g/cmand a MFR (temperature: 190&#xb0; C., load: 2.16 kg) of from 0.1 to 5.0 g/10 min, and from 5 to 99.5 wt % of an unmodified polyethylene resin (Y) having a density of from 0.930 to 0.965 g/cm, a MFR of from 0.01 to 5.0 g/10 min and a melt flow rate ratio (HL-MFR (temperature: 190&#xb0; C., load: 21.6 kg)/MFR of from 40 to 270, and having a density of from 0.938 to 0.965 g/cmand a MFR of from 0.05 to 1.0 g/10 min.

Welding material and fuel tank thereby welded

A permeation-preventive member and a multilayered container for fuel tank employing the permeation-preventive member, the permeation-preventive member is for preventing a permeation of hydrocarbon compound by fusion-bonding the member to a discontinuous part of the permeation-preventive layer in a multilayered container for fuel tank which comprises an inner polyolefin resin layer, an outer polyolefin resin layer and a permeation-preventive layer as an interlayer, wherein the permeation-preventive member comprises a metal sheet or foil and an adhesive resin layer comprising a modified polyolefin that satisfies the following requirements (a) to (e):

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Kawasaki, Japan

Osamu Miyachi