Absorbent body and sanitary article

An absorbent body and absorbent layer technology, applied in the fields of absorbent bodies and sanitary products, can solve the problems of insufficient fixation, hindered liquid permeability, backflow, etc., and achieves the effects of less backflow, excellent diffusivity and absorption speed, and simple manufacturing process.

Inactive Publication Date: 2018-10-23
MITSUI CHEM INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, if the fluff pulp is less than 40% of the total mass of the absorbent body, the fixation of the SAP becomes insufficient, and adjacent SAPs are fused to each other during liquid absorption, resulting in a problem (gel blocking) that hinders liquid permeability.
If gel sticking occurs, body fluids in the absorbent body can flow back and cause discomfort to the diaper wearer

Method used

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  • Absorbent body and sanitary article
  • Absorbent body and sanitary article
  • Absorbent body and sanitary article

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0206] Prepare figure 2 The shown nonwoven fabric manufacturing apparatus (spunbonding machine, length in the direction (CD direction) perpendicular to the machine flow direction (MD direction) on the collecting surface: 300 mm).

[0207] This nonwoven fabric manufacturing apparatus includes: extruders 1 and 1' for extruding raw materials, a spinning die 2 for spinning the extruded raw materials to produce fibers 3, and a fiber 3 for stretching and discharging. 5, a collector device 6 for making a nonwoven fabric 8 by collecting stretched fibers, a bonding unit 9 for thermally fusing at least a part of the nonwoven fabric 8, and a roll of nonwoven fabric after thermal fusion Take the winder 10. The collector device 6 has a suction unit 7 for efficiently collecting fibers by suction at a lower portion of the surface (collection surface) on which the fibers are collected. In this nonwoven fabric manufacturing apparatus, the fibers 3 obtained from the spinning die 2 are cooled...

Embodiment 2

[0220] Change the spinning die 2 to be used to obtain Figure 1B A nonwoven fabric manufacturing apparatus having the same configuration as the nonwoven fabric manufacturing apparatus used in Example 1 was prepared except for the die for spinning fibers (ie, crimped long fibers) having the fiber cross section shown.

[0221] Figure 1B In , the white-painted part and the dotted part represent the resin, respectively.

[0222] Using the nonwoven fabric manufacturing apparatus described above, a spunbonded nonwoven fabric (SB) was produced as follows.

[0223] In Example 2, as the low-melting-point thermoplastic resin A, PP-1 (97 parts by mass) and a glycerin-based hydrophilic agent (3 parts by mass) were used, and as the high-melting-point thermoplastic resin B, a load of 2160 g was used at 230° C. 60 g / 10 minutes of propylene polymer [melting point (Tm) = 157° C.; hereinafter referred to as “PP-2”] (97 parts by mass) and a glycerin-based hydrophilic agent (3 parts by mass). ...

Embodiment 3

[0233] The same operation as in Example 2 was performed except that the amount of SAP was changed to 5.1 g and the measurement of the water absorption rate under load was omitted.

[0234] The results are shown in Table 1.

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Abstract

An absorbent body according to the present invention is provided with an absorbing layer that includes: a superabsorbent polymer; and a spunbond nonwoven fabric formed from an olefin polymer composition.

Description

technical field [0001] The present invention relates to absorbent bodies and hygiene articles. Background technique [0002] For hygienic products such as diapers and sanitary napkins, in general, the top sheet (liquid-impermeable sheet) on the inside of the back sheet (liquid-impermeable sheet) formed of a liquid-impermeable resin sheet is in direct contact with the wearer's skin. Permeable sheets) are provided with absorbent layers including absorbers for absorbing body fluids such as urine and menstrual blood. Superabsorbent polymers (SAP: Superabsorbent polymers) are often used as absorbers used in sanitary products such as diapers and sanitary napkins. [0003] Since SAP has high absorbency and is more than pulp, it is superior in absorption of body fluids and can reduce the thickness of the absorber layer compared to the case where the absorber layer is formed of only pulp. In addition, SAP is powdery in a dry state, and when it absorbs body fluids, it swells and sol...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61F13/53A61F13/15A61F13/534
CPCA61F13/1565A61F13/15731A61F13/15804A61F13/53A61F13/534A61F13/539A61F2013/530007A61F2013/530153A61F2013/530167A61F2013/530481D04H3/007D04H5/06A61F13/15699A61F13/53436A61F13/5376A61F13/538A61F2013/15959A61F2013/15991A61F2013/53024A61F2013/530299A61F2013/53062A61F2013/53765A61F13/5116A61F2013/51038A61F2013/51165
Inventor 税田祥平松原晓雄铃木健一
Owner MITSUI CHEM INC
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