Integrally-formed low-gram-weight composite air-laid paper

A dust-free paper, low-weight technology, applied in the direction of textiles and papermaking, non-woven fabrics, adhesives, etc., can solve the problems of small fiber web gaps, easy SAP leakage, skin allergies, etc., and achieve the effect of improving dryness

Active Publication Date: 2016-10-12
XIAMEN YUANCHUANGLI TECH SERVICE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Use 50g dust-free paper as the upper and lower layers of the composite core. The fluff pulp and ultra-fine short fibers contained in the dust-free paper have small gaps in the fiber net, which can quickly absorb urine and effectively isolate SAP saturated absorption after being placed for a period of time. Low-molecular-weight polyacrylic acid, and these leached substances will make the surface of the composite core sticky and even cause skin allergies; and because the high-weight dust-free paper is hydrophilic and water-retaining, the moisture retained by itself is difficult to b

Method used

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  • Integrally-formed low-gram-weight composite air-laid paper
  • Integrally-formed low-gram-weight composite air-laid paper
  • Integrally-formed low-gram-weight composite air-laid paper

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0057] as attached figure 1 As shown, the surface layer of the once-formed low-grammage composite dust-free paper described in this embodiment is an air-formed dust-free paper layer 1 composed of fluff pulp fibers and ultrafine hot-melt short fibers, and the bottom layer is a non-woven fabric layer 2; An adhesive layer 3 is arranged between the non-woven fabric layer 2 and the air-formed dust-free paper layer 1 .

[0058]In this embodiment, the dust-free paper layer 1 is composed of fluff pulp fibers 4 and ultrafine hot-melt short fibers 5, the content of fluff pulp fibers 4 is 65%; the content of ultrafine hot-melt short fibers 5 is 35%, and the content of fluff pulp fibers The length of the fiber 4 is 2~3mm, and the width is 40μm; the superfine hot-melt short fiber 5 is a two-component ES fiber, the melting point of the outer layer is 135°C, the melting point of the inner layer is 155-160°C, and the square grams of fluff pulp Weight is 10g / m 2 , the square gram weight of u...

Embodiment 2

[0074] as attached figure 2 As shown, the one-time forming low-grammage composite dust-free paper structure described in this embodiment has an air-formed dust-free paper layer 1 composed of fluff pulp fibers and ultra-fine hot-melt short fibers on the surface layer, and a non-woven dust-free paper layer on the bottom layer. Cloth layer 2.

[0075] In this embodiment, the dust-free paper layer 1 is composed of fluff pulp fibers 4 and ultrafine hot-melt short fibers 5, the content of fluff pulp fibers 4 is 65%; the content of ultrafine hot-melt short fibers 5 is 35%, and the fluff pulp fibers The length of 4 is 2~3mm, and the width is 40μm; the superfine hot-melt short fiber 5 is a two-component ES fiber, the melting point of the outer layer is 135°C, the melting point of the inner layer is 155-160°C, and the square gram weight of fluff pulp 16g / m 2 , the square gram weight of ultra-fine hot-melt staple fiber is 9g / m 2 .

[0076] In this embodiment, the hydrophilic nonwove...

Embodiment 3

[0091] In this embodiment, the adhesive uses hot-melt pressure-sensitive adhesive of SBS system, the melting temperature is 2000-2600cps / 160°C, and the softening point is 70-80°C.

[0092] The manufacturing process parameters of the low-weight composite dust-free paper in this implementation case are as follows:

[0093] 1) The coarse crushing power of the fluff pulp board is 15kw, the electrode speed is 1400-1500r / min, and the crushing capacity is 200kg / min;

[0094] 2) The power of the fluff pulp fine pulverizer is 50kw, the electrode speed is 1400-1500r / min, and the defibrating capacity is 200kg / min;

[0095] 3) The power of the opening machine is 2kw, and the air volume of the negative pressure fan in the forming part is 8000-12000m 3 / h;

[0096] 4) The power of the mixed fan of fluff pulp fiber and ultrafine hot-melt short fiber is 20-30kw, and the processing air volume is 4000-8000m 3 / h;

[0097] 5) The air duct section of the oven adopts multi-stage heating, and t...

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Abstract

The invention relates to integrally-formed low-gram-weight composite air-laid paper. A low-gram-weight air-laid paper layer prepared from fluff pulp and superfine hot-melting staple is arranged on the surface layer of the air-laid paper, and a non-woven cloth layer prepared from hot-melting chemical fiber is arranged on the bottom layer of the air-laid paper. Fluff pulp boards are roughly smashed and fine smashed for fiber decomposition to form fluff pulp fiber, the fluff pulp fiber and the superfine hot-melting staple are quantitatively and uniformly sprayed on a net band, and the superfine hot-melting staple and the fluff pulp fiber are subjected to heat bonding through an oven air duct to form the low-gram-weight air-laid paper layer; the non-woven cloth layer is subjected to glue applying or directly compounded with the air-laid paper layer coming out of the oven air duct to form the low-gram-weight composite air-laid paper. According to the low-gram-weight composite air-laid paper, the heat bonding of the air-laid paper layer and the non-woven cloth layer is achieved through hot pressing points or ultrasonic waves. Due to integrally-formed composite non-woven cloth, the strength of the composite air-laid paper is much higher than that of traditional air-laid paper, and the strength requirement for air-laid paper materials during high-speed production on a moisture-absorption article device is met.

Description

technical field [0001] The patent of the present invention relates to the technical field of hygroscopic articles, in particular to a low-gram-weight composite dust-free paper formed at one time. Background technique [0002] Infants, young children and other dependent persons often wear absorbent articles, such as diapers. The function of an absorbent article is to contain excreta and to isolate these excreta from the wearer's body and clothing and bedding. Absorbent articles, such as diapers, generally consist of a liquid topsheet, a liquid impermeable backsheet, and an absorbent and liquid containing absorbent core disposed between the liquid permeable topsheet and the liquid impermeable backsheet. The absorbent core is usually uniformly mixed with fluff pulp and super absorbent resin (SAP), and then wrapped by spray glue of the wrapping layer material once. However, during use, due to the relative movement of the wearer when moving and changing body positions, the fluf...

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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IPC IPC(8): D04H1/732D04H1/542D04H1/593D04H1/4382D04H1/4374D04H1/587D04H1/44
CPCD04H1/4374D04H1/4382D04H1/44D04H1/542D04H1/587D04H1/593D04H1/732
Inventor 连伟光周丕严
Owner XIAMEN YUANCHUANGLI TECH SERVICE CO LTD
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