Method for producing an insulating polyolefin laminated paper

Details Method for producing an insulating polyolefin laminated paper Method for producing an insulating polyolefin laminated paper

1989-04-14

1990-10-23

Weston, Caleb

Adhesive bonding and miscellaneous chemical manufacture

Methods

Surface bonding and/or assembly therefor

156219, 156243, 15624411, 15624422, 15624423, 15624425, 428156, 428161, 428162, 428171, 428172, 428232, 428511, 4285375, 174 23R, 174 25R, 162112, 162132, 162138, B29C 4706, B32B 3108

Patent

active

049649337

ABSTRACT:
An insulating polyolefin laminate paper and a method for producing such a paper in which first and second fiber paper layers are laminated to a polyolefin film layer. The fiber paper layers have an impermeability of 20 to 4000 Gurley-seconds. At least one of the fiber paper layers is mechanically deformed in such a manner that irregularities are produced having a depth of 2 to 50% of the thickness of the fiber paper layer. The mechanical deformation is accomplished prior to lamination. Before lamination, the water content of the fiber paper layers is controlled to be no more than 4%. Preferably, the thickness of the fiber paper layers is at least 30 microns. Furthermore, an electric power supply cable includes an insulating polyolefin laminate paper as an insulating layer.

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