Multi-ply sheet production method and multi-ply sheet production device
OwnerKikuo Yamadainventor
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Abstract
Provided is a multi-ply sheet production method and a multi-ply sheet production device for producing a multi-ply sheet which uses an elastic member, exhibits stretchability, and has reduced residual strain. The multi-ply sheet production method includes forming a multi-ply sheet by joining a first fibrous sheet, and a second fibrous sheet including a material containing a cellulose-based component, with an elastic member interposed therebetween, the elastic member being in a stretched state and coated with an adhesive on peripheral surface, and then heat-treating the multi-ply sheet at a temperature in accordance with the thermal characteristics of the adhesive.
Claims4
A method for producing a multi-ply sheet, comprising:
- forming a multi-ply sheet by joining with an adhesive a first fibrous sheet and a second fibrous sheet with an elastic member in a stretched state interposed therebetween;
- and
- heat-treating the multi-ply sheet at a temperature in accordance with thermal characteristics of the adhesive while the elastic member is in the stretched state,
- wherein the temperature of the heat treatment is 1° C. to 20° C. lower than a softening point of the adhesive.
Dependencies are inferred from the claim text.