Ichikawa Co., Ltd.

Tetsuo Takeuchi

Hirofumi Ishii

Mitsuyoshi Matsuno

In a doctor blade, which suppresses abrasion of a mating member and excels in water removal capability and shape retention capacity over a long time, resin is impregnated into a fibrous laminate composed of base materials and batt layers integrated by needle punching, and an adjustment is made so that the void content is between 50% and 80%.

Doctor blade

In laminated, resin-impregnated doctor blades for removing water from a grooved belt in the press part of a papermaking machine, fibers of the belt-contacting layer are oriented in the direction of travel of the belt. The doctor blade so constructed exhibits greater adhesion to the belt, an improved water-removal capability, and greater durability, when compared with a doctor blade having randomly oriented surface fibers.

Doctor blade for removing water

A doctor blade for removing water, which excels in water removal capability and shape retention capacity, and suppresses abrasion of the belt or other mating member with which it cooperates, is a fibrous laminate comprising integrated base material and batt fiber layers. By impregnating resin into one side of the fibrous laminate, a layer in which the amount of impregnated resin is large and a layer in which the amount of impregnated resin is small are provided. In use, the layer in which the amount of resin is small is in contact with a belt or other mating member. The doctor blades can be adapted to the mating member easily, and excel in the water removal capability and shape retention, and suppress abrasion of the mating member.

A doctor blade for removing water from a mating member, such as a grooved elastic belt in the press part of a papermaking machine, comprises a resin-impregnated fibrous laminate, in which at least a part of the warp of a base material in the laminate, which comes into contact with the mating member, is brush-shaped, so that the warp enters the insides of the grooves to remove water therefrom.

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Tokyo, Japan

Tetsuo Takeuchi