Laminated sheet, and process for production thereof

A technology of laminating sheets and sheets, applied in the direction of layered products, pharmaceutical formulations, transportation and packaging, etc., can solve problems such as peeling or slippage, user discomfort or dissatisfaction, and achieve excellent adhesion and adaptability , small itching irritation, improved adhesion and adaptability

Active Publication Date: 2012-05-30
KURARAY KURAFLEX CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Uncomfortable or unsatisfactory user experience due to peeling or slippage due to low adhesion of the sheet

Method used

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  • Laminated sheet, and process for production thereof
  • Laminated sheet, and process for production thereof
  • Laminated sheet, and process for production thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0150] By using general melt-blown production equipment, the melt-blown method has a spinning temperature of 260°C, an air temperature of 270°C, an air pressure of 0.4 MPa, a discharge of 0.2 g / hole·min, and 400 spinners in the cotton inlet. 100 parts by mass of polypropylene resin (MFR = 1100 g / 10 minutes) was spun under the number of holes (arranged in rows), and the resulting fibers were collected on a rotating mesh conveyor as a support to produce a fiber with 5 g / m 2 A fabric basis weight of the melt-blown nonwoven fabric sheet, and then the sheet is taken up.

[0151] Forty (40) parts by mass of rayon fibers and 60 parts by mass of polyester fibers are homogeneously blended, and then produced in the usual manner with 60 g / m 2 A semi-random carded web of fabric basis weight. The carded web was placed on a perforated drum support with an open area ratio of 25% and a hole diameter of 0.3 mm. The carded web was continuously moved in its longitudinal direction at a speed ...

Embodiment 2

[0156] The basis weight of the semi-random carded web is 40 g / m 2 , except that, in the same manner as in Example 1, a compound with 45 g / m was obtained 2 The basis weight of the hybrid nonwovens. For the resulting nonwoven fabric sheet, the thickness ratio of the liquid retaining layer to the adhesive layer one (1) was 8.7. In addition, the fibers of the adhesive layer comprising the meltblown nonwoven fabric in the obtained nonwoven fabric sheet had a number average fiber diameter of 2.57 μm and a standard deviation of fiber diameter distribution of 1.318, and a coefficient of fluctuation of fiber diameter was 51.26%. Furthermore, in the resulting nonwoven fabric sheet, the liquid retaining layer had a void ratio of 93.3%, and the adhesive layer had a void ratio of 88.6%.

[0157] The sheet was dipped in a cosmetic preparation, and the adhesiveness of the sheet was measured. As in Example 1, the adhesiveness of the sheet with the impregnation rate of 500 mass % was higher...

Embodiment 3

[0160] By using general melt-blown production equipment, the melt-blown method has a spinning temperature of 280°C, an air temperature of 290°C, an air pressure of 0.4 MPa, a discharge of 0.3 g / hole·min, and 400 spinners in the cotton inlet. 100 parts by mass of poly(butylene terephthalate) resin (MFR=90 g / 10 min) was spun under the number of holes (arranged in rows), and the resulting fibers were collected on a rotating net as a support Conveyor to produce 20 g / m 2 Melt-blown nonwoven sheet of fabric basis weight, and the sheet is taken up.

[0161] In the same manner as in Example 1, an entangled web (nonwoven fabric) was produced by using 40 parts by mass of rayon fibers and 60 parts by mass of polyester fibers. With 20 g / m 2 The previously produced melt-blown nonwoven fabric sheet of fabric basis weight is uncoiled with an unwinding device and then superimposed on the fiber web. The sheet and the fiber web are placed on a completely flat support with fine mesh, and move...

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Abstract

A laminated sheet is produced by forming an adhesion layer permeable to a liquid component and contactable with a skin on at least one side of a liquid-retention layer comprising a nonwoven structural member and having an ability to absorb the liquid component. The adhesion layer comprises a nonwoven structural member comprising a fiber having a number-average fiber diameter of not more than 10 [mu]m, and the thickness ratio of the adhesion layer relative to the liquid-retention layer is 1 / 4 to 1 / 100 as a ratio of the adhesion layer / the liquid-retention layer. The fiber of the nonwoven structural member of the adhesion layer may have a standard deviation of fiber diameter of not more than 5. The nonwoven structural member of the liquid-retention layer may comprise a fiber having a fiber diameter larger than that of the fiber of the adhesion layer. The laminated sheet has a liquid retentivity and a liquid releasability in a well-balanced manner, and has an excellent adhesion and an excellent fit to the skin in the state where the sheet is impregnated with a liquid component.

Description

technical field [0001] The present invention relates to laminated sheets capable of absorbing liquid components (liquid compounds or compositions) and applied to the skin, and methods of producing such sheets, more particularly to impregnated sheets containing cosmetic or pharmaceutical components or other A laminated sheet in which a liquid composition of components is attached to the skin (a sheet for living body application for liquid impregnation), and a method for producing the sheet. Background technique [0002] As a common sheet attached to the skin of a human body or others, a skin care sheet impregnated with a liquid such as a cosmetic agent (liquid-impregnated sheet for living body application) is being used. Skin care sheets represented by mask sheets simply keep the skin in a highly moist or moist state, and various commercial products have now been developed. As a raw material of the sheet, woven fabrics or nonwoven fabrics, each of which includes or is made o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D04H1/541D04H1/46D04H1/492D04H1/72A61K8/02A61Q19/00B32B5/26D04H3/16D04H3/105D04H3/11D04H3/03D04H1/54
CPCB32B5/26D04H1/492D04H1/54D04H1/4382A61K8/0212D04H1/4374D04H1/498D04H3/16A61Q19/00A61K8/0208B32B5/022B32B5/08B32B2260/021B32B2262/0223B32B2262/0276B32B2262/0284B32B2262/0292B32B2262/04B32B2262/062B32B2307/726B32B2307/728Y10T442/608D04H1/43828D04H1/43835D04H1/43838A45D44/002
Inventor 落合彻茂木伸一清冈纯人白石育久新屋信夫
Owner KURARAY KURAFLEX CO LTD
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