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US 11,981,465 B2Granted
Method for compressing structured tissues
AssigneeEssity Hygiene and Health Aktiebola
InventorsHans Wallenius, Ingela Ljusegren
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Abstract
A method and apparatus are disclosed for processing structured tissue material to form a compressed bundle of folded tissues. A web of at least one ply of structured tissue is subjected to a destructuring operation before folding with itself or with another similar web to form a stack. The stack can then be compressed to form the compressed bundle at a pressure that is less than would have been the case, had the structured tissue not first been destructured.
Claims15
A method of processing structured tissue material to form a compressed bundle of folded tissues, the method comprising:
- providing a web comprising at least one ply of structured tissue;
- at least partially destructuring the at least one ply of structured tissue;
- folding the web with itself or with another similar web to form a stack;
- compressing the stack at a compression of greater than 120 kN/m2 to form a compressed bundle of folded tissues having a density of greater than 0.2 g/cm3;
- and
- wherein destructuring takes place by embossing and calendering the at least one ply of structured tissue, and wherein calendering takes place subsequent to embossing.
3 more elements
Dependencies are inferred from the claim text.