Method for compressing structured tissues
Tissues such as dry-crepe tissues can be readily compressed to a desired high density suitable for transport and distribution logistics. To achieve similar densities with structured tissues may require significantly higher pressures. In certain cases, the pressure required to reach a given density f...
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Zusammenfassung: | Tissues such as dry-crepe tissues can be readily compressed to a desired high density suitable for transport and distribution logistics. To achieve similar densities with structured tissues may require significantly higher pressures. In certain cases, the pressure required to reach a given density for structured tissue may be double the pressure required for a similar weight of dry-crepe tissue. This may be beyond the capabilities of existing compression stations, requiring a re-engineering of the compression station. Provided is a method of 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 at least partially destructuring by embossing and calendaring operation before folding the web with itself or with another similar web to form a stack. The stack is then compressed at a pressure greater than 120 kN/m2 to form the compressed bundle of folded tissues having a density greater than 0.2 g/cm3. By subjecting the web of structured tissue material to a process of destructuring, a significant reduction in the force required to compress the stack may be achieved without reducing the quality in the tissue material. |
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