Kawamura Sangyo Co., Ltd.

Hitachi Engineering Services Co., Ltd.

Tetsuo Inoue

Miyoshi Yokura

Kenichirou Tada

Satoru Nakanishi

A laminate comprising aramid paper containing aramid fiber and aramid pulp and polyester film, the aramid paper and polyester film having been subjected to plasma surface treatment before laminating, wherein the aramid paper and polyester film are continuously bonded to each other. The disclosure is concerned with a process for manufacturing the laminate and an apparatus for manufacturing the laminate.

Adhesive-free aramid-polyester laminate, method of manufacturing the same and apparatus for manufacturing the same

An aramid paper made from aramid fibrid and short fiber and formed into a paper shape has two sides and a surface and includes a thermal bonding face located in at least one of the sides of the aramid paper, the thermal bonding face having such a property as to be directly thermally bondable with another sheet of aramid paper of the same material or a polyester film at a thermal bonding temperature ranging from 90&#xb0; C. to 200&#xb0; C. when a plasma treatment is applied to the surface of the aramid paper. The plasma treatment has an intensity ranging from 30 W&#xb7;min/mto 1500 W&#xb7;min/m, and the thermal bonding face has a composition ratio (O/C) of the number of oxygen atoms (O) to the number of carbon atoms (C) ranging between 150% and 230% of a theoretical value of an atom number ratio.

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Yokkaichi, Japan

Tetsuo Inoue