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Core body with diversion diffusion and particle sliding prevention effects and preparation method

A core and particle technology, applied in application, medical science, clothing, etc., can solve the problems affecting comfort, liquid absorption speed and air permeability, and product feel hardening, so as to improve liquid diffusivity and improve absorption effect. , The effect of the design concept is simple

Inactive Publication Date: 2020-08-14
DONGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The absorbent core is the core structure of disposable sanitary products such as sanitary napkins and baby diapers. Most of the composite cores used in marketed diapers and sanitary napkins are a mixture of fluff pulp and superabsorbent resin, but a large part of the core is The disadvantage is that the superabsorbent resin particles will roll in the core, resulting in gel accumulation and stratification after absorbing liquid, affecting the comfort when wearing
In order to prevent the particles from sliding, a large amount of hot melt adhesive is often added, and excessive use of hot melt adhesive will make the product feel hard, and the liquid absorption speed and air permeability will also be affected

Method used

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  • Core body with diversion diffusion and particle sliding prevention effects and preparation method
  • Core body with diversion diffusion and particle sliding prevention effects and preparation method
  • Core body with diversion diffusion and particle sliding prevention effects and preparation method

Examples

Experimental program
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Effect test

Embodiment 1

[0038] A kind of preparation method of the core body (such as image 3 shown):

[0039] see figure 2 and image 3 Made by acupuncture technology, the surface density is 100g / m 2 Polyethylene fiber and viscose mixed needle-punched non-woven fabric roll 7 is used as the core surface layer 3, and then made by spunbond technology with an area density of 20g / m 2 Polypropylene fiber spunbonded nonwoven fabric roll 6 is used as the core bottom layer 4.

[0040] On the automatic production line of the composite core body, the coiled material 6 at the bottom layer of the core body is unrolled and driven by the mesh conveying curtain to the SAP hopper 8 to spread powder evenly, and the mesh conveying curtain continues to convey, and when the coiled material passes under the surface layer coiled material 7 of the core body The unwinding covers the bottom layer of the core and the SAP particles 9 . Then, the three-layer structure is sequentially fed into the first needling machine 1...

Embodiment 2

[0043] A kind of preparation method of the core body (such as image 3 shown):

[0044] Use carding machine 13 to make surface density be 50g / m by the mode of carding into net 2 The polyethylene non-woven fiber web is used as the bottom layer 4 of the core body, driven by the mesh curtain to the bottom of the SAP hopper 8, evenly sprinkled with powder, and then covered with a carding machine 14. The surface density is 60g / m 2 Polypropylene fibers and cotton are mixed as the nonwoven fiber web of the core surface layer 3, and then this three-layer structure is fed successively to the first needle loom 10 with a horizontal row of needles and a spacing of 6 cm and a vertical row of needles with a spacing of 6 cm. The second needling machine 11 of 6 cm is needle-punched and compounded to produce a three-dimensional cage-like structure to fix SAP particles in it. The steps of the two needling machines are both 6 cm. Finally, the core body is made by ultrasonic bonding 12 with a rh...

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Abstract

The invention discloses a core body with effects of flow guiding, diffusion and particle sliding prevention and a preparation method. The core body sequentially comprises an upper-layer non-woven material, an SAP particle layer and a lower-layer non-woven material from top to bottom. SAP particles are scattered on the lower-layer non-woven material, the upper-layer non-woven material is paved andsuperposed on the particles, a needling machine with special pin headers is fed for reinforcement, and flow guide grooves in different shapes are formed in the core body. In addition, the core body improves existing fluff pulp and SAP core bodies to a certain degree, and effectively solves the problems that fluff pulp core bodies are lumped and broken and SAP particles are prone to rolling. The core body is simple in structure, reasonable in design and convenient to produce.

Description

technical field [0001] The invention relates to a preparation method of an absorbent core, belonging to the technical field of disposable sanitary products. Background technique [0002] The absorbent core is the core structure of disposable sanitary products such as sanitary napkins and baby diapers. Most of the composite cores used in marketed diapers and sanitary napkins are a mixture of fluff pulp and superabsorbent resin, but a large part of the core is The disadvantage is that the superabsorbent resin particles will roll in the core, resulting in gel accumulation and stratification after absorbing liquid, affecting the comfort when wearing. In order to prevent the particles from sliding, a large amount of hot melt adhesive is often added, and excessive use of hot melt adhesive will make the product feel hard, and the liquid absorption speed and air permeability will also be affected. Contents of the invention [0003] The technical problem to be solved by the presen...

Claims

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Application Information

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IPC IPC(8): A61F13/534A61F13/15
CPCA61F13/15577A61F13/534A61F2013/15715A61F2013/530481
Inventor 靳向煜沈嘉俊王一行吴海波
Owner DONGHUA UNIV