Double nip embossing

Plastic and nonmetallic article shaping or treating: processes – Mechanical shaping or molding to form or reform shaped article – Reshaping running or indefinite-length work

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264282, 264284, 264293, 264294, 264296, 425385, 425394, 493338, 493467, B29C 4322

Patent

active

057799652

ABSTRACT:
The crispness or clarity of embossed tissue is improved by embossing the tissue twice in two successive embossing nips formed between a rigid engraved embossing roll and a resilient backing roll. The hardness of the resilient backing roll in the first embossing nip is less than the hardness of the resilient backing roll in the second embossing nip. This form of double nip embossing is particularly effective for embossing tissue webs having high bulk and resiliency, such as soft uncreped throughdried tissues, which cannot be satisfactorily embossed by conventional methods.

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