KR960000172A - Nonwoven panty liners and methods and apparatus for manufacturing same - Google Patents

Abstract

The present invention relates to a panty liner comprising a basic liquid-retaining member in the form of a nonwoven unit sheet. The liquid-impermeable barrier layer is attached to the nonwoven sheet to prevent body secretions absorbed in the nonwoven sheet from discharging through the garment bond side of the panty liner. The invention also includes a method and apparatus for making a panty liner.

Description

Nonwoven panty liners and methods and apparatus for manufacturing same

As this is a public information case, the full text was not included.

1 is a perspective view of a panty liner made in accordance with the present invention,

2 is a cross-sectional view enlarged along the line 2-2 of FIG.

3 is a more enlarged fragmentary perspective view showing the localization of the skin contacting surface of a panty liner according to the present invention,

4 is a perspective view of a fiber entanglement station for making a nonwoven fabric used as starting material for the manufacture of panty liners according to the present invention.

Claims (37)

The non-woven unit sheet constituting the basic liquid-retaining member of the disposable panty liner, and the liquid-impermeable on the non-woven unit seal to prevent body secretions collected by the non-woven unit sheet from being discharged through the garment bonding side of the panty liner. Disposable panty liner comprising a barrier layer. The disposable panty liner of claim 1, wherein the nonwoven unit sheet comprises a top surface constituting the skin-folding surface of the panty liner. The panty liner of claim 2, wherein the top surface comprises a plurality of recesses at regular intervals capable of retaining high viscosity body secretions that are excreted on the panty liner. The panty liner of claim 3, wherein the depth of the recess is in the range of about 0.05 mm to about 1.30 mm. 4. The panty liner of claim 3 wherein the depth of the recess is in the range of about 1.0 mm. The panty liner of claim 1, wherein the thickness of the nonwoven unit sheet ranges from about 0.75 mm to about 1.75 mm when measured under 0.345 Kpa pressure. The panty liner of claim 1, wherein the thickness of the nonwoven unit sheet is in the range of about 1.35 mm as measured under 0.345 Kpa pressure. The panty liner of claim 1 wherein the basis weight of the nonwoven unit sheet ranges from about 80 g / m ² to about 160 g / m ² . The panty liner of claim 1 wherein the nonwoven unit sheet has a basis weight of about 122 g / m ² . The panty liner of claim 1 wherein the liquid-impermeable barrier layer is distinct from the nonwoven unit sheet and secured to the bottom surface of the nonwoven unit sheet. 11. The panty liner of claim 10, wherein the liquid-impermeable barrier layer comprises a layer of plastic material. 11. The panty liner of claim 10, wherein the liquid-impermeable barrier layer comprises a nonwoven layer. The panty liner of claim 10, wherein the liquid-impermeable barrier layer comprises a coating of liquid-impermeable material. The panty liner of claim 13 wherein the liquid-impermeable material is an adhesive. The panty liner of claim 10, wherein the liquid-impermeable barrier layer is adhesively secured to the nonwoven unit sheet. The panty liner of claim 1, further comprising means for removably securing the panty liner to the undergarment of the wearer. 17. The panty liner of claim 16, wherein the means for detachably securing the panty liner to the undergarment of the wearer comprises an adhesive coating attached to the nonwoven unit sheet. 18. The panty liner of claim 17, wherein an adhesive coating is applied to the garment bond side of the liquid-impermeable barrier layer. 18. The panty liner of claim 17, further comprising a detachable protective medium covering the adhesive coating while the panty liner is not in use. The panty liner of claim 1, wherein the nonwoven unit sheet comprises rayon fibers. 21. The nonwoven fabric sheet of Claim 20 wherein the nonwoven unit sheet is provided in an amount ranging from about 20% to about 40% by weight based on its weight and comprises polypropylene fiber, cotton fiber, acrylic fiber, wood pulp fiber, bico fiber, paper fragments and A panty liner comprising rayon fibers blended with an additive selected from the group consisting of blends thereof. The panty liner of claim 1, wherein the nonwoven unit sheet comprises a binder material to increase the resistance of the nonwoven unit sheet. The method of claim 22 wherein the binder material is selected from the group consisting of vinyl ethylene, vinyl chloride, vinyl acetate, vinyl acrylate, polyvinyl alcohol, polyvinyl acetate, carboxylated polystyrene, rubber polyethylene, polyacrylonitrile and mixtures thereof. Panty liners. 23. The panty liner of claim 22, wherein the binder material is present in the nonwoven unit sheet in the range of about 8% to about 17% by weight, based on the weight of the nonwoven unit sheet treated with the binder. 23. The panty liner of claim 22, wherein the binder material is present in the nonwoven unit sheet in a range of about 11% to about 15% by weight based on the weight of the nonwoven unit sheet treated with the binder. 23. The panty liner of claim 22, wherein the binder material is present in the nonwoven unit sheet in an amount of about 12.6 weight percent solids based on the weight of the nonwoven unit sheet treated with the binder. 23. The panty liner of claim 22 wherein the concentration of binder material in the nonwoven unit sheet is lowered from the bottom surface of the nonwoven unit sheet toward its skin-contacting surface. Providing a nonwoven fabric, cutting the nonwoven fabric to form a basic liquid-retaining member for the panty liner, and then providing a liquid-impermeable barrier layer to the basic liquid-retaining member such that body secretions captured by the basic liquid-retaining member Preventing the discharge from the garment abutment side of the liner. 29. The method of claim 28 including providing a liquid-impermeable barrier layer on the nonwoven fabric and simultaneously cutting the nonwoven and the liquid-impermeable barrier layer to form a basic liquid-retaining member. 30. The method of claim 29 including providing a securing means to the liquid-impermeable barrier layer to retain the panty liner in the undergarment of the wearer. 30. The method of claim 29 comprising providing an adhesive fixation means to the liquid-impermeable barrier layer for detachably retaining the panty-liner to the undergarment of the wearer. 32. The method of claim 31 including covering the adhesive fixation means with a removable protective medium for protecting the adhesive fixation while not using the panty liner. 29. The method of claim 28 used to provide a liquid-impermeable web that is distinct from a nonwoven, to immobilize the liquid-impermeable web to the nonwoven to form a liquid-impermeable barrier layer and to retain the panty liner in the undergarment material. To cover the main surface of the liquid-redpermeable web opposite the nonwoven fabric, and to apply a detachable sheet to the liquid-impermeable web to protect the adhesive while the panty liner is not in use. Simultaneously cutting the impermeable web and the detachable sheet to form a panty liner. 29. The method of claim 28 comprising applying a binder to the nonwoven to increase the resistance of the nonwoven. 35. The method of claim 34 comprising applying a binder to a surface opposite the skin-contacting surface of the nonwoven. 35. The method of claim 34 comprising applying the binder in the range of about 8% to about 17% by weight based on the weight of the nonwoven treated with the binder. Means for generating a fluid stream applied to the fibrous starting material to entangle the fibrous starting materials to form a unit nonwoven, means for applying a binder on the first major surface of the nonwoven to increase the resistance of the nonwoven, a second of the nonwoven Means for providing a liquid-impermeable barrier layer on the nonwoven fabric to prevent random excretion of body secretions excreted on the primary surface, wherein the panty liner is retained divergently to the undermask material and the nonwoven fabric Means for applying the adhesive coating to the major surface of the sided liquid-impermeable barrier layer, means for applying a detachable protective web to the adhesive coating to protect the adhesive coating while the pantyliner is not in use, and non-woven, liquid-impermeable Means for cutting the barrier layer and the detachable protective web into individual panty liners Apparatus for producing a pantiliner from a fibrous starting material in the form of a sheet movable under hydraulic action to which individual fibers are applied. ※ Note: The disclosure is based on the initial application.