Composite thin layer and its production method

Abstract

A composite thin layer and its manufacturing method, wherein the composite thin layer includes a first layer and a second layer. The first layer body includes a first bottom surface, a first top surface opposite to the first bottom surface, a plurality of first protrusions formed on the first top surface, and a plurality of penetrating first bottom surface and first top surface and at least The first perforations are distributed in the first protruding part. The second layer is laminated with the first layer, and includes a second bottom surface superimposed on the first top surface, a second top surface opposite to the second bottom surface, and a plurality of bulges formed on the second top surface and overlapped and bonded respectively The second protruding part on the first protruding part, and a plurality of second perforated holes passing through the second bottom surface and the second top surface and at least distributed on the second protruding part, the second perforated holes and the first perforated holes are connected to each other connected. Through the lamination of the first layer and the second layer, as well as the structural configuration of the first perforation and the second perforation, the air permeability and air permeability of the composite thin layer can be effectively adjusted. liquid permeability.

Description

technical field [0001] The invention relates to a thin-layer object and a manufacturing method thereof, in particular to a composite thin-layer object formed of non-woven fabric or an adhesive film and a manufacturing method thereof. Background technique [0002] Non-woven fabric is a thin layer of melted fibers made of polymer melted materials. Its material, characteristics and manufacturing method are different from cloth textiles. It has been widely used in the production of sanitary products such as diapers or clothing. In addition to non-woven fabrics, there are also application methods of using film materials such as polypropylene (PP for short) to make sanitary products and clothing. For the air permeability and liquid permeability of the above-mentioned thin layers such as non-woven fabrics and adhesive films, it can generally be adjusted by changing the fiber weaving density and forming holes, etc. However, the above-mentioned methods still have certain limitations....

AI Technical Summary

Problems solved by technology

For the air permeability and liquid permeability of the above-mentioned thin layers such as non-woven fabrics and adhesive films, it can generally be adjusted by changing the fiber weaving density and forming holes, but the above methods still have certain limitations.

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