Method of manufacturing a compressibility gradient in paper

Details Method of manufacturing a compressibility gradient in paper Method of manufacturing a compressibility gradient in paper

1989-07-26

1990-11-27

Thurlow, Jeffery

Plastic and nonmetallic article shaping or treating: processes

Mechanical shaping or molding to form or reform shaped article

Reshaping running or indefinite-length work

162205, 162361, 264175, 264324, 264343, 427211, 427361, B29C 4324

Patent

active

049734415

ABSTRACT:
The method includes the steps of coating the peripheral surface of a roll with a film of plasticizer. An offset roll disposed adjacent to the roll is rotated such that the roll and the offset roll define therebetween a transfer nip so that a film of the plasticizer is transferred to the offset roll. The web is moved past the offset roll such that the web contacts the offset roll downstream relative to the transfer nip so that the film of the plasticizer is offset onto the web. The web is then passed with the offset coating of plasticizer through a calendering nip such that between the offset coating of the web and the subsequent calendering of the web with the offset coating, the plasticizer is permitted to uniformly and controllably penetrate into the web such that the Z-directional compressibility of the web is controlled prior to the web extending through the calendering nip.

REFERENCES:
patent: 3120449 (1964-02-01), Griswold
patent: 3261899 (1966-07-01), Coates
patent: 4378639 (1983-04-01), Walker
patent: 4534829 (1985-08-01), Ahrweiler et al.
patent: 4596632 (1986-06-01), Goetz et al.
patent: 4670102 (1987-06-01), Maurer et al.
patent: 4836894 (1989-06-01), Chance et al.

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