A perforated three-dimensional sheet with double-sided protrusions and its forming method

Abstract

The invention discloses a perforated three-dimensional sheet material with double-side bulges and a forming method thereof. The three-dimensional sheet material is formed by compounding two layers ormore than two layers of sheet materials; the three-dimensional sheet material comprises a first sheet material positioned at the upper side and a second sheet material positioned at the lower side; double-side bulges and holes are formed on the surface of the three-dimensional sheet material; the double-side bulges consist of an upper bulge on the first sheet material and a lower bulge arranged onthe second sheet material; the upper bulge and the lower bulge are both hollow bulges; the bulge directions are opposite to each other; the bottoms of the bulges are mutually compounded and overlapped; the hole is positioned between the adjacent bulges and penetrates through the three-dimensional sheet material; the hole is in a funnel shape; the upper bulge and the lower bulge are of hollow structures; the upper bulge in contact with the skin and the lower bulge in contact with the adsorption core body are completely separated in the bulge positions, so that body fluid at the bulge parts ofthe sheet material is effectively prevented from returning to the upper bulge surface in contact with the skin again after being absorbed by the absorption layer, so that the dry and comfortable performance is improved.

Description

technical field [0001] The invention relates to a sheet material used in the fields of hygiene products and medical products and a forming method thereof, in particular to a perforated three-dimensional sheet material with double-sided protrusions and a forming method thereof. Background technique [0002] In the fields of hygiene products and medical products, embossed / perforated three-dimensional non-woven fabrics have a three-dimensional structure, less contact area with the skin, and liquids can penetrate through holes, leading the market and are widely used in hygiene products. Coverings for towels and diapers. [0003] The invention patent application number is 201410115950.9, and the name of the invention is a three-dimensional non-woven fabric with an open-pore structure, which is distributed with raised areas, sunken areas and open-hole structures. Each raised area has a fiber density gradient to the sunken area, that is, from the raised area to the sunken area The...

AI Technical Summary

Problems solved by technology

[0004] However, after the existing embossed and perforated three-dimensional non-woven fabrics are harvested into rolls and finished products, there are certain differences in the retention of the raised 3D effect. Some areas have obvious raised 3D effects, and some areas have raised The 3D effect loss is relatively serious, which seriously affects the aesthetics of the embossed and perforated three-dimensional non-woven fabric, and in the area where the 3D effect is seriously lost, it will affect the air permeability and liquid permeability of the material; and only the surface has protrusions, the material The increased three-dimensional thickness is not obvious, and it cannot effectively improve the fluffy softness, reduce residue, and isolate liquid rewet.

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