Extruded polyethylene-based resin foam sheet and interleaf sheet for glass plates

摘要

An extruded foam sheet having a foam layer constituted of a base resin containing low density polyethylene as a major component thereof, wherein the foam sheet has an apparent density of 45 to 450 kg/m3, an average thickness of 0.03 mm or more and less than 0.3 mm and a dimensional change of −5% to 0% in the extrusion direction when heated at 80° C. for 24 hours and wherein cell walls of the foam layer have an average thickness of 6 to 70 μm. The foam sheet may be used as an interleaf sheet for glass plates.

主权项

1. An extruded polyethylene-based resin foam sheet having a foam layer constituted of a base resin containing low density polyethylene as a major component thereof,
wherein cell walls of said foam layer have an average thickness of 6 to 70 μm, and wherein the extruded polyethylene-based resin foam sheet has an apparent density of 120 to 450 kg/m3, an average thickness between 0.03 mm and 0.15 mm, and a dimensional change of −5% to 0% in the extrusion direction when heated at 80° C. for 24 hours and has a 25% compression stress of 10 kPa or more in the thickness direction of the extruded polyethylene-based resin foam sheet.