JPH08308946A - Mask - Google Patents

Abstract

PURPOSE: To give a clearance between a mask and the mouth when the mask is worn by providing the center of a protection face covering a wearer's mouth with a perpendicular continuous unstretchable vertical core. CONSTITUTION: A vertical core 2 which continues form the upper end to the lower end of a mask 1 is formed in the center of the protection face 1a of the mask 1 which covers a wearer's nose and mouth. The vertical core 2 is unstretchable and does not change its length and width even if the mask is stretched right and left to wear it. For instance, the mask has a double-layer sttructure including a layer made of cotton, cellulosic fibers, an done containing plastic fibers such as polyethylene. The vertical core 2 is formed by compressing the center of the mask 1 while heating it to a temperature higher than the melting point of the plastic fibers, and melting and solidifying the plastic fibers. Therefore, the plastic fiber layer becomes thinner only in the part of the vertical core.

Description

Detailed Description of the Invention

[0001]

FIELD OF THE INVENTION This invention relates to masks, and in particular
The present invention relates to a simple mask formed by punching out a sheet material such as a stretchable nonwoven fabric.

[0002]

2. Description of the Related Art Conventionally, a simple mask of this kind is generally used in food factories for the purpose of hygiene control during work. A conventional simple mask is formed, for example, by punching a stretchable nonwoven fabric sheet into a shape as shown in FIG. When this type of mask 20 is used, the left and right ends 21 are pulled so that it can be stretched to a size suitable for being worn on the wearer's ear. However, when the mask 20 is stretched and used in this way,
Has a problem in that it adheres to the wearer's mouth, making it difficult to breathe and speak.

On the other hand, as shown in FIGS. 6 (a) and 6 (b), the mask 30 is divided into left and right parts 31 and punched, and the left and right parts 31 are overlapped to form a central portion 32 of the mask.
It is also known to be joined by. This type of mask 3
In No. 0, the joint portion 32 at the center of the mask 30 is formed in a convex curved shape so that there is a margin between the mask 30 and the mouth when worn. However, in this case, since the punching step and the connecting step are necessary, there is a problem that the manufacturing cost becomes high.

Therefore, a technical problem to be solved by the present invention is to provide a simple type mask which has a margin between the mask and the mouth when worn and which is inexpensive to manufacture.

[0005]

In order to solve the above-mentioned technical problems, the mask according to the present invention is constructed as follows.

That is, this mask is an integral type mask formed by punching out a stretchable sheet material, and it is a non-stretchable mask which is continuous in the vertical direction at the center of the protective surface covering the mouth of the wearer. It is characterized by having a vertical core.
One or more vertical cores can be formed. In this mask, the vertical core is formed by curing the adhesive applied to the central portion of the protective surface during punching of the sheet material, or by using the nonwoven fabric sheet containing the plastic fiber as the sheet material, the vertical core is formed by the nonwoven fabric sheet. It can be formed by heating the central portion of the protective surface to a temperature equal to or higher than the melting point of the plastic fiber and compressing it during punching.

According to this structure, since the vertical core is formed at the same time when the sheet is punched out, the mask can be easily formed by one manufacturing process. Therefore, the manufacturing cost can be kept low. Further, when the mask is pulled to the left and right and stretched, the material itself becomes thinner in the vertical direction, but the length of the vertical core does not change, so that the central portion of the mask is curved along the vertical core. Therefore, when the mask is worn, a space between the mask and the mouth can be secured. For this reason, it is possible to prevent the problem of difficulty in breathing or talking.

Further, in the above construction, the non-woven fabric sheet is a multi-layered sheet having a layer containing plastic fibers and a layer of cellulosic fibers, and when the mask is punched out from this sheet, the central portion is made of plastic. It is preferable to form a vertical core by heating at a temperature equal to or higher than the melting point of the fiber and compressing. With this configuration,
Since the cellulosic fiber layer does not melt, only the central portion of the layer containing the plastic fiber is thinned and solidified by compression while the thickness remains unchanged from that before heating. If the non-woven fabric consists only of layers containing plastic fibers, it may crack at the vertical core when the mask is pulled left or right, but it contains a layer of cellulosic fibers that does not melt even when heated. When the non-woven fabric sheet having a structure is used, the layer of cellulosic fibers does not change even when the length of the longitudinal core becomes thin, so that the mask can be prevented from cracking at the central portion.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A mask according to an embodiment of the present invention will be described in detail below with reference to FIGS.

FIG. 1 is a front view of the mask 1. This mask 1 is formed by punching out a sheet material of a non-woven fabric of about 50 g / m ² , and is continuous from the upper end to the lower end of the mask 1 at the center of the protective surface 1a covering the nose and mouth of the wearer. A vertical core 2 is formed. The non-woven fabric used as the material of the mask 1 has elasticity, and when the mask 1 is worn, it is pulled left and right to have a length suitable for putting on the ear. On the other hand, the vertical core 2 is non-stretchable, and is configured so that the length and width do not change even when the mask 1 is pulled left and right when worn.

The sectional structure of the mask 1 is shown in FIG. The mask 1 has a two-layer structure including a layer 3 made of cotton which is a cellulosic fiber and a layer 4 containing a plastic fiber such as polyethylene or polypropylene. The vertical core 2 has a configuration in which the plastic fiber is melted and solidified by compressing while heating the central portion of the mask 1 to a temperature higher than the melting point of the plastic fiber. For this reason, the thickness of the plastic fiber layer 4 is reduced only at the vertical core 2.

The mask 1 is formed by punching out a sheet of non-woven fabric as described above, and the die for punching has a shape along the contour of the mask 1 as shown by phantom lines in FIG. A punching die having an outer blade 5 and an inner blade 6 that forms a band 1b to be worn on the ear by extracting the left and right sides of the protective surface 1a. An assembly arranged between the blades 6 is used. As shown in FIG. 4, this mask 1 rotates the roller 9 while feeding the nonwoven fabric sheet 10 along the roller 9 in which the mold assembly 8 including the outer blade 5, the inner blade 6, and the pad 7 is arranged. It can be formed continuously.

By using this apparatus, when the nonwoven fabric sheet 10 is punched out, the vertical core 2 can be formed by simultaneously heating and compressing the central portion of the mask 1 to solidify it, so that the mask 1 can be manufactured in one step. Therefore, it is possible to prevent an increase in cost due to a complicated manufacturing process. In this example,
Since the non-woven fabric containing fibers such as polyethylene and polypropylene having a lower melting point than polyester and nylon is used, the vertical core 2 can be easily formed.

On the other hand, when the mask 1 of this embodiment is stretched to the length that can be worn on the ear by pulling it to the left and right when it is worn, the width of the material itself becomes smaller vertically, but the length of the vertical core 2 does not change. At the same time, the entire portion changes to a shape like a rhombus, and at the same time, the portion of the vertical core 2 bends. For this reason, when the mask 1 is worn, a space is formed between the mouth and the mask, so that the mouth and nose are not pressed, and there is no difficulty in breathing or talking.

The present invention is not limited to the above embodiment, but can be implemented in various other modes. For example, in the above embodiment, the nonwoven fabric sheet 10 having a two-layer structure is used as the material of the mask 1, and the nonwoven fabric sheet 1
The vertical core 2 is formed by heating and compressing the central part of 0, but it is formed by heating and compressing the vertical core 2 in the same manner as described above using a non-woven fabric sheet having a single layer structure containing plastic fibers. You may. If necessary, a non-woven fabric having a multilayer structure of three or more layers may be used. Furthermore, regardless of the content of plastic fibers, a flexible nonwoven fabric is used, and when punching this into the shape of the mask 1, an adhesive is applied to the portion corresponding to the center of the mask 1 to form the vertical core 2. You may. Alternatively, a device in which the mold assembly 8 is arranged on a flat plate-shaped member instead of the roller 9 may be used to reciprocate the plate-shaped member at a right angle while feeding the nonwoven fabric sheet at a constant pitch. In any of these cases, a mask that does not press the mouth when worn can be formed in one step.

[Brief description of drawings]

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

FIG. 2 is a diagram showing a cross-sectional structure of this mask.

FIG. 3 is a perspective view showing the shape of this mask when in use.

FIG. 4 is a diagram showing an example of a mask manufacturing apparatus.

FIG. 5 is a front view of a mask according to a conventional example.

6A is a diagram showing parts of a mask according to another conventional example, and FIG. 6B is a diagram showing a shape of the mask when in use.

[Explanation of symbols]

 1 Mask 2 Vertical Core 3 Layer of Cotton 4 Layer of Plastic Fiber 5 Outer Blade 6 Inner Blade 7 Pad 8 Type Assembly 9 Roller 10 Nonwoven Sheet

Claims (4)

[Claims] 1. An integrated mask (1) formed by punching out a stretchable sheet material (10), the vertical direction being provided at the center of a protective surface (1a) covering a wearer's mouth. A mask having a continuous non-stretchable vertical core (2). 2. The vertical core (2) is formed by curing an adhesive applied to the central portion of the protective surface (1a) during punching of the sheet material (10). The mask according to claim 1. 3. The sheet material (10) is a non-woven sheet containing plastic fibers, and the vertical core (2) forms a central portion of the protective surface (1a) when the non-woven sheet (10) is punched out. The mask according to claim 1, wherein the mask is formed by heating at a temperature equal to or higher than the melting point of the plastic fiber and compressing. 4. The non-woven sheet (10) is a multi-layered sheet having a layer (4) containing plastic fibers and a layer (3) of cellulosic fibers. mask of.