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

A molding method and sheet technology, which is applied in the field of sanitary products and medical products, can solve the problem of affecting the aesthetics of embossed and perforated three-dimensional non-woven fabrics, not being able to effectively improve the fluffy softness, affecting the material's air permeability and liquid permeability, etc. problems, to achieve the effect of improving dry performance, preventing being squeezed, and improving bulkiness

Active Publication Date: 2020-08-07
XIAMEN YANJAN NEW MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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.

Method used

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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] like Figure 1 to Figure 6 As shown, the first sheet 1 is embossed and perforated through a pair of intermeshing concave-convex rollers. At 70-140°C, the protrusion F on the first convex roller A1 is formed on the surface of the first sheet 1. convex a1, and the perforated needle E on the first concave roller B1 pierces the first sheet 1 to form an opening and the first sheet 1 is closely attached to the first concave roller B1, wherein: the first Sheet 1 is a 20gsm hydrophilic air-through non-woven fabric;

[0039] At the same time, the second sheet 2 is also embossed and punched through a pair of intermeshing concave-convex rollers. At 70-140°C, the protrusion H on the second convex roller D1 forms a downward convex on the surface of the second sheet 2. a1', and the perforated needle G on the second convex roller D1 pierces the second sheet 2 to form an opening, and the second sheet 2 is tightly attached to the second concave roller C1, wherein: the second Sheet 2 i...

Embodiment 2

[0044] Such as Figure 7 to Figure 9 As shown, the first sheet 3 is embossed and perforated through a pair of intermeshing concave-convex rollers. At 70-140°C, the protrusions on the first convex roller A2 form an upward convex on the surface of the first sheet 3. a2, and the perforated needle on the first gravure roller B2 pierces the first sheet 3 to form an opening and the first sheet 3 is closely attached to the first gravure roller B2, wherein: the first sheet 3 is 18gsm hydrophobic air-through non-woven fabric;

[0045] At the same time, the second sheet 4 is also embossed and punched through a pair of intermeshing concave-convex rollers. At 70-140°C, the protrusions on the second convex roller D2 form lower protrusions on the surface of the second sheet 4. a2', and the perforated needle on the second convex roller D2 pierces the second sheet 4 to form an opening, and the second sheet 4 is closely attached to the second concave roller C2, wherein: the second sheet 4 is...

Embodiment 3

[0050] Such as Figure 10 to Figure 12 As shown, the first sheet 5 is embossed and perforated through a pair of intermeshing concave-convex rollers. At 70-140°C, the protrusions on the first convex roller A3 form an upward convex on the surface of the first sheet 5. a3, and the perforated needle on the first gravure roll B3 pierces the first sheet 5 to form an opening and the first sheet 5 is closely attached to the first gravure roll B3, wherein: the first sheet 5 is 22gsm PE perforated film sheet;

[0051] Simultaneously, the second sheet 6 is also embossed and punched through a pair of intermeshing concave-convex rollers. At 70-140°C, the protrusions on the second convex roller D3 form lower protrusions on the surface of the second sheet 6. a3', and the perforated needle on the second convex roller D3 pierces the second sheet 6 to form an opening, and the second sheet 6 is closely attached to the second concave roller C3, wherein: the second sheet 6 is 22gsm hydrophilic a...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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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...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B32B37/10B32B38/06B32B38/04
CPCB32B37/0053B32B37/10B32B38/04B32B38/06B32B2038/042
Inventor 谢继华蔡吉祥罗杰龙
Owner XIAMEN YANJAN NEW MATERIAL CO LTD
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