Composite paper, manufacturing method thereof, and papermaking equipment

Abstract

The invention discloses composite paper comprising at least two base layer paper. Each base layer paper forms an embossing pattern; each emboss pattern is formed by at least two embossing units; each base layer paper is formed by two basic surfaces oppositely arranged; at least part of the emboss units of each base layer paper recesses into one basic surface of the base layer paper, and the other basic surface is remained horizontal or projects corresponding to an area where the recessed part lies; at least two base layer paper are integrated via bottom walls of the at least part of the emboss units stuck together; and a proportion of the thickness of the bottom wall of the emboss units of the two base layer paper and the distance between the two basic surfaces is 1 to 3 to 1 to 2. The invention further provides a composite paper manufacturing method and papermaking equipment. The proportion of the thickness of the bottom wall of the emboss units of the two base layer paper and the distance is arranged between the two basic surfaces is 1 to 3 to 1 to 2, so the composite paper has great softness and excellent touch feeling.

Description

technical field [0001] The invention relates to a composite paper, in particular to a method for manufacturing the composite paper and papermaking equipment. Background technique [0002] The cellulose fiber structure is widely used in daily necessities such as toilet paper and napkins. Typically the paper product is a cellulosic fibrous structure in which at least one layer of base paper is superimposed face-to-face to form a laminate. In order to meet consumers' demand for aesthetics, manufacturers adopt the embossing process of paper towels containing multi-layer base paper. The embossing process not only makes the paper towels beautiful, but also increases the surface area of ​​the layers, improving bulkiness and water holding capacity. and softness. [0003] In the prior art, multi-layer paper is usually embossed. However, the increase in thickness of multi-layer paper is limited, or even does not increase the thickness. For this reason, researchers have embossed the ...

AI Technical Summary

Problems solved by technology

[0003] In the prior art, multi-layer paper is usually embossed. However, the increase in thickness of multi-layer paper is limited, or even does not increase the thickness. For this reason, researchers have embossed the multi-layer paper and then laminated it. , so that multiple layers of paper are combined to increase the thickness of the paper, etc. However, using a lamination wheel to press the embossed paper usually destroys the overall embossing effect of the paper surface, and its bonding strength is low. In the case of water absorption, the delamination phenomenon is prominent; while the adhesive is used to bond the paper layers, after the adhesive is used for interlayer bonding, the paper surface is stiff after the adhesive dries, and the paper The water absorption capacity of the paper is reduced, which is contrary to the goal of improving the softness of the paper surface and improving the water absorption capacity of the paper after embossing the paper surface.

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