WO2007139110A1

WO2007139110A1 - Absorbable core and mask having the absorbable core therein

Info

Publication number: WO2007139110A1
Application number: PCT/JP2007/060904
Authority: WO
Inventors: Masahiro Yamashita
Original assignee: Kobayashi Pharmaceutical Co., Ltd.
Priority date: 2006-05-31
Filing date: 2007-05-29
Publication date: 2007-12-06
Also published as: CN101454049A; CN104664928B; JP4832166B2; JP2007319421A; CN104664928A; HK1210920A1

Abstract

[PROBLEMS] To provide a mask which can retain water therein over a long time and can ensure to prevent the throat from dryness during sleeping. [MEANS FOR SOLVING PROBLEMS] An absorbable core which is intended to be attached to a mask, can retain a water-retaining solution, and comprises a fiber material having an areal weight of 200 to 1000 g/m2.

Description

Specification

Absorbent core and mask containing the same

Technical field

[0001] The present invention relates to a mask mainly worn during sleep and an absorbent core attached to the mask.

Background art

[0002] During sleep, there is no swallowing of food and drinks, saliva, etc., so the throat may become dry easily. In order to prevent this, for example, Patent Document 1 discloses the following mask. The mask described in this document contains a water retention member in which moisture is retained in a mask body that covers the mouth. This replenishes the oral cavity during sleep and prevents the throat from drying out.

Patent Document 1: JP 2001-178837 A

Disclosure of the invention

Problems to be solved by the invention

[0003] In order to prevent dryness of the throat while being forced, it is necessary to hold and supply moisture for a long time during sleep, and simply by housing a member holding moisture as described above, It could not be said that water could be sufficiently supplied to the oral cavity, and further improvements were desired.

[0004] The present invention has been made to solve the above problems, and is capable of retaining moisture over a long period of time, and an absorbent core capable of reliably preventing dry throat during sleep, and An object is to provide a mask provided with the same.

Means for solving the problem

[0005] The present invention is an absorptive core that is attached to a mask and is capable of holding a water retention liquid, and has been made in order to solve the above problems, and has a fiber material having a basis weight of 200 to 1000 gZm ^2. is doing. In order to supply moisture to the oral cavity during sleep, the above weight is appropriate.If the weight is smaller than 200 gZm ² , water cannot be retained sufficiently, and if it is larger than lOOOgZm ² , the core becomes too hard. And may be uncomfortable when worn.

[0006] The fiber material preferably has pulp. Flexible by using pulp Low cost can be achieved while ensuring the water retention.

[0007] The fiber material is preferably manufactured by various methods such as an airlaid method.

[0008] The absorbent core preferably further includes a pair of non-woven sheets sandwiching the fiber material. This improves the shape retention of the core and facilitates manufacturing.

[0009] Of the pair of nonwoven fabric sheets, it is preferable that one nonwoven fabric sheet has hydrophobicity and the other nonwoven fabric sheet has hydrophilicity. Hydrophilicity has the advantage that the water-retaining liquid can be easily absorbed by the pulp during production, which makes production easier. On the other hand, the hydrophobicity has the advantage of preventing wetting and stickiness when worn.

[0010] The absorbent core may have a region corresponding to the nose of the mask wearer cut out. According to this configuration, when the nose fits into the notched region, the nose can be prevented from being covered by the absorbent core, so that breathing through the nose is facilitated and the absorbent core is positioned by the nose. It is possible to prevent the absorbent core from moving during sleep.

[0011] In order to supply sufficient water to the oral cavity during sleep, the absorbent core is preferably impregnated with 5 to 30 g of a water retention solution.

[0012] The water retention liquid may be water, and is preferably constituted by blending 10 to 50% by weight of polyol. When a polyol is blended, the absorbent core force has an effect of suppressing the evaporation of water, and is preferable as a water retention solution during sleep.

[0013] A mask according to the present invention has been made to solve the above problems, and has been described above.

V Houses any absorbent core.

The invention's effect

[0014] According to the absorbent core and the mask including the same according to the present invention, moisture can be retained for a long time, and drying of the throat during sleep can be reliably prevented.

BEST MODE FOR CARRYING OUT THE INVENTION

[0015] (absorbent core)

The absorbent core according to the present invention will be described below. The water absorbent core of the present invention is a mask. It is attached to the water and is used to impregnate the water retention liquid described later and gradually release the water retention liquid during use to supply moisture to the oral cavity. In order to supply sufficient water to the oral cavity during sleep, it is preferable to be able to impregnate 5 g / sheet or more of a water retention solution described later. Accordingly, the basis weight is preferably 200 to: LOO OgZm ² , more preferably 300 to 600 gZm ² . This is because if the basis weight is smaller than 200 gZm ² , moisture cannot be sufficiently retained, whereas if it is larger than lOOOg Zm ² , the core becomes too hard and may become uncomfortable when worn.

[0016] Also from the use in the mouth, as the area of the absorbent core, for example, and more preferably the area is preferably tool 30～55Cm ² it is 15~80cm ^2. The dimensions of the absorbent core are preferably about 4 to 12 cm in the horizontal direction and about 3 to 8 cm in the vertical direction. Furthermore, for example, about 8 to L cm in the horizontal direction and about 4 to 6 cm in the vertical direction are more preferable.

[0017] The absorbent core can be constructed by using a hydrophilic fiber that can be composed of various fiber materials, or a blend of hydrophilic fiber and synthetic fiber. Examples of the fiber material include polyethylene, polypropylene, polyester, rayon, cotton, pulp, and the like. The manufacturing method of such an absorbent core is not particularly limited, but can be manufactured by an airlaid method or the like. From the viewpoint of productivity, processability, and durability, the main component pulp is a heat-fusible fiber such as polyethylene. Is preferably blended at a predetermined ratio.

[0018] For example, when the absorbent core is made of pulp, the ratio of pulp: heat-sealing fibers is 60:40 to 80:20. The water-absorbent core can be composed of a single layer or a plurality of layers. From the viewpoint of 1S durability 'water retention, it is preferable to have a three-layer structure sandwiched between a pair of nonwoven fabrics. The nonwoven fabric of the layers arranged at both ends may be the same material or different materials. These non-woven fabric materials can be hydrophilic fibers, hydrophobic fibers, synthetic fibers, or blends of hydrophilic fibers and synthetic fibers. Examples of hydrophilic fibers include rayon, cotton, and tissue. It is rayon. Making it hydrophilic has the advantage of facilitating production because it makes it easier for the pulp to absorb the water retention liquid during production. Examples of the hydrophobic fiber include polyethylene (PE), polypropylene (PP), polyester such as PET, and preferably PE or PP. Hydrophobic has the advantage that wetting and stickiness can be prevented. Gatsutsu Thus, it is preferable that the surface facing the wearer is made of hydrophobic fibers and the opposite surface is made of hydrophilic fibers. More preferably, rayon which is a hydrophilic fiber can be used. For more nonwoven, for example, it is preferable that the basis weight of 20~50gZm ^2.

[0019] Further, the absorbent core is preferably provided with a vent hole for breathing. Provide at least where the mouth is located when worn. More preferably, it is provided on the entire absorbent core so that breathing is not obstructed even if the mask is worn off. The size and interval of the air holes can be adjusted as appropriate. For example, the diameter is preferably 5 mm, and the interval between the holes is preferably 5 to 20 mm. The shape of the absorbent core is not particularly limited, such as a rectangle, a circle, or an ellipse, but it is preferable to form a notch that fits the nose. In order to provide such a notch, for example, the absorbent core may be formed in a concave shape. In this way, the nose is not covered by the core and fits into the cut-out area, making it easier to breathe through the nose, positioning the absorbent core by the nose, and moving the absorbent core during sleep. Can be prevented.

[0020] In consideration of the size of the nose, the dimension of the notch is preferably about 20 to 40 mm in the horizontal direction and about 5 to 30 mm in the vertical direction.

[0021] (Water retention solution)

Next, the water retention liquid according to the present invention will be described. This water retention liquid is for impregnating the above-described absorbent core. In order to supply sufficient water to the oral cavity during sleep, it is preferable that 5 to 30 g of a water retention solution is impregnated in the absorbent core. More preferably, it is 5 to 15 g.

[0022] The water-retaining liquid may be water or water is the main component, and 10 to 50% by weight of polyol can be blended in water. When a polyol is blended, there is an effect of suppressing the moisture evaporation speed from the absorbent core, which is preferable as a water retention solution during sleep that requires a long duration. Examples of polyols include glycerin dipropylene glycol, 1,3-butylene glycol, propylene glycol, sonolebithonole, 1,2-pentanediol, 1,2-hexanediol, etc. Among them, glycerin is a safety point. Is preferable. In addition to these, preservatives such as methylparaben and phenoxyethanol, moisturizers such as hyaluronate and betaine, plant extracts, xanthan gum and hydroxypropylmethyl cell Loose (HPMC), hydroxyethyl cellulose (HEC), hydroxypropyl cellulose (HPC), water-soluble thickeners such as agar, guar gum, carrageenan, fragrances such as eucalyptus and mint, and surfactants that dissolve fragrances (Non-ionic surfactants, amphoteric surfactants, ionic surfactants) and the like can be used as appropriate. The water retaining liquid may be impregnated in the absorbent core or may be impregnated in the absorbent core during use. When impregnating with a water retaining solution in advance, for example, it is preferable to store the solution or perfume in an aluminum laminate film, an aluminum vapor-deposited PET film, or a transparent (silica) vapor-deposited PET film.

[0023] (Mask body)

The mask according to the present invention includes a mask body covering the mouth, and the above-described absorbent core is attached to the mask body. For example, a container to be described later can be fixed to the mask body, and the absorbent core can be stored in the container. In addition, an ear band can be attached as a mask. The material for the ear band is not particularly limited, but a stretchable material made of polyester or the like is more preferred.

The dimensions of the mask body are preferably about 100 to 190 mm in the horizontal direction and about 50 to about LOO mm in the vertical direction in consideration of the size of the face.

More preferably, the width is about 150 to 180 mm in the horizontal direction and about 70 to 90 mm in the vertical direction. The mask body can be composed of, for example, a woven fabric or a nonwoven fabric, preferably a nonwoven fabric by a spunbond method, a melt blow method, a thermal bond method or a spunlace method, more preferably a nonwoven fabric by a spunbond method from the viewpoint of shape retention. can do.

[0025] The structure of the mask body can be one layer or two or more layers. For example, S layer (single-spun bond single layer), SS layer (spun bond spunbond two-layer structure), SMS layer (spun bond) A three-layer structure of melt blown spun bond), more preferably an S layer, an SS layer, and even more preferably an SS layer.

[0026] The fiber material constituting the woven fabric and the nonwoven fabric can be selected from known materials, for example, paper, natural fibers such as rayon 'cotton, and synthetic fibers such as polypropylene' polyethylene 'polyester. Also, from the viewpoint of productivity, polypropylene and polyethylene are preferable, and from the viewpoint of shape retention, it is more preferable to select polypropylene. it can.

[0027] When the mask body is formed of two or more woven or non-woven fabrics, these can be formed by sewing, ultrasonic welding, or thermal fusion. In addition, at least one pleat can be formed by the crease, which causes the mask body to extend in the vertical direction, corresponding to various face sizes. Further, a linear nosepiece having a plastic detergency such as polyethylene and a biodegradable coagulant can be attached to the mask body, for example, along the upper side thereof. This nosepiece prevents the mask body from fitting to the face and opening the gap between the nose and the mask body.

[0028] (Container)

The container according to the present invention is attached to the mask body and houses the absorbent core. The container can be formed in a bag shape, and can be composed of a woven fabric or a non-woven fabric. More specifically, it can be composed of a nonwoven fabric by a spun bond method, a thermal bond method or a span lace method, preferably from the viewpoint of air permeability. Further, from the viewpoint of touch, the nonwoven fabric may be formed using a thermal bond method, a spunlace method, and particularly preferably a spunlace method. The size of the container is preferably about 5 to 13 cm in the horizontal direction and about 4 to about LOcm in the vertical direction in consideration of the size of the absorbent core. Furthermore, for example, about 9 to 12 cm in the horizontal direction and about 6 to 8 cm in the vertical direction are more preferable.

[0029] Using such a woven fabric or non-woven fabric, a bag composed of one layer or two or more layers can be formed. However, from the viewpoint of breathability, flexibility, and moisture resistance, the mouth side of the wearer is It is preferable to have two layers and one layer on the mask body side. Ability to select known fiber materials Breathability 'Flexibility' Wet-proofing 'Productivity in terms of polypropylene' Polypropylenes Polyesters such as polyethylene and PET are preferred PP core ZPE sheath, etc. The core-sheath fiber and hollow fiber can also be used preferably. The container may be made of a single fiber material among these fiber materials, or may be made of two or more kinds of fiber materials.

[0030] Such a container is attached to the mask body by a known method such as sewing, ultrasonic welding, or thermal fusion. The container may be attached to the mask body entirely or partially. Preferably, the container is attached only on the upper part of the container or on the left and right sides of the container. More preferably, it is attached only at the top of the container. Spread the mask with pleats by attaching only at the top Does not interfere with wearing.

Example

[0031] Examples of the present invention will be described below. The present invention is not limited to this example. Here, examples and comparative examples of the mask according to the present invention will be described with reference to the drawings. 1 is a front view of a mask according to this example and a comparative example, FIG. 2 is a sectional view, and FIG. 3 is a rear view.

As shown in FIGS. 1 to 3, the mask includes a mask main body 1 that covers the mouth, and a pair of ear hook bands 2 for fixing the mask main body 1 to the face. Further, a pocket-shaped container 3 is attached to the back of the mask body 1, and the container 3 accommodates an absorbent core 4 impregnated with a water retention liquid.

[0033] The mask body 1 is composed of a plurality of non-woven sheets 11 (length 90 x width 180 mm).

These nonwoven fabric sheets 11 are stacked to form a rectangular shape, and the periphery is ultrasonically welded (dotted line indicated by S in the figure). The ear band 2 is ultrasonically welded to both sides of the mask body 1. Further, three folds extending in the lateral direction are formed in the center, and these folds form pleats 12. Further, a linear nose piece 13 made of plastic resin is embedded along the upper side of the mask body 1, and the upper and lower sides of the nose piece 13 are ultrasonically welded in the mask body 1 to fix the position. ing.

Next, the container and the absorbent core will be described with reference to FIG. Fig. 4 is a front view and a cross-sectional view of the absorbent core. As shown in FIGS. 2 and 3, the container 3 is formed in a rectangular bag shape, and its upper side is ultrasonically welded below the nose piece 13 on the back of the mask body.

As shown in FIG. 4, the absorbent core 4 (length 55 × width 90 mm) accommodated in the container 3 (inner diameter: length 75 × width 110 mm) is a concave in plan view having a notch 41 on the upper side. (Notch: vertical 19 X horizontal 30 mm) and impregnated with water retention solution. A plurality of vent holes 45 are formed! /, (Diameter 5 mm).

[0036] Then, in the form described above, the following four types of masks, that is, three types of masks according to the example of the present invention and one type of mask according to the comparative example were created by changing the material.

(Example 1) [table 1]

* Absorbent core ... 6mm thick

The components of the water retention liquid are as follows.

[Table 2]

About 15 g of the water-retaining liquid shown in Table 2 was impregnated into the absorbent core shown in Table 1 and stored in the container shown in Table 1 attached to the mask body shown in Table 1.

(Example 2)

[Table 3]

* Absorbent core ... 4mm thick The water retention liquid shown in Table 2 was impregnated into the absorbent core shown in Table 3 with about 10 g of Og and stored in the container shown in Table 3 attached to the mask body shown in Table 3.

(Example 3)

[¾4]

* Absorbent core '"Thickness 4mm

The water retention liquid shown in Table 2 was impregnated with about 10 g of the absorbent core shown in Table 4 and then stored in the container shown in Table 4 attached to the mask body shown in Table 4.

(Comparative example)

[¾5]

* Water-absorbing core ... 4mm thick

The power of impregnating the absorbent core of Table 2 with the absorbent core of Table 5 is impregnated with about 10 g of absorbent core. did [0042] The results after use are as follows.

[0043] [Table 6]

[0044] According to Examples 1 to 3 configured as described above, a water-absorbent core that can sufficiently hold 10 g of the water-holding liquid is obtained, and the water-holding liquid remains sufficiently even after 10 hours of wearing assuming bedtime. I was able to. In the comparative example, the residual rate after wearing for 10 hours was 22% by weight, but this was only volatile substances such as glycerin remaining, and all the water had evaporated. Brief Description of Drawings

FIG. 1 is a front view of a mask according to the present invention.

2 is a cross-sectional view of FIG.

FIG. 3 is a rear view of FIG.

FIG. 4 is a front view and a sectional view of the absorbent core used in FIG. 1.

Explanation of symbols

[0046] 1 Mask body

2 Earband

3 Container

4 Absorbent core

41 Notch

Claims

The scope of the claims

[1] An absorbent core attached to a mask and capable of holding a water retention liquid,

An absorbent core having a fabric weight of 200 to 1000 gZm ² .

[2] The absorbent core according to claim 1, wherein the fiber material includes pulp.

[3] The absorbent core according to claim 1 or 2, wherein the fiber material is manufactured by an airlaid method.

[4] The absorbent core according to any one of claims 1 to 3, further comprising a pair of nonwoven sheets sandwiching the fiber material.

[5] The absorbent core according to claim 4, wherein, of the pair of nonwoven fabric sheets, one nonwoven fabric sheet has hydrophobicity and the other nonwoven fabric sheet has hydrophilicity.

[6] The absorbent core according to any one of claims 1 to 5, wherein a region corresponding to the nose of the mask wearer is cut out.

[7] The absorbent core according to any one of claims 1 to 6, impregnated with 5 to 30 g of a water retention solution.

[8] The absorptive core according to claim 7, wherein the water-retaining liquid contains 10 to 50% by weight of polyol in water.

[9] A mask containing the absorbent core according to any one of claims 1 to 8.