JPH0639051A - Sanitary mask - Google Patents

Abstract

PURPOSE:To provide the sanitary mask which can align generally the mask shape with a shape of noses of various persons, and also, has no anxiety of rust, etc., and moreover, is sanitary and safe. CONSTITUTION:In the sanitary mask 1 having a fixing string 2 such as an elastic string, etc., on both ends of a mask main body 3, a thin belt-like core material 4 made of a shape memory polymer in the horizontal direction in the upper side part of the mask main body 3. In such a state, by warming this core material 4 made of a shape memory polymer by the body heat of a finger and a nose, etc., and bending and deforming this core material 4 along the shape of a nose of a mask user, a clearance is scarcely generated between the mask and at least the part of the nose.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sanitary mask applied to the nose and mouth to prevent dust, germs and the like from entering the body with breathing.

[0002]

2. Description of the Related Art Conventionally, a mask disclosed in Japanese Utility Model Laid-Open No. 61-156944 is known. As a dustproof measure, this mask has a wire-shaped mouthpiece made of a shape memory alloy on the part corresponding to the chin and nose of the mask so that there is no gap between the chin and nose between the mask and face. Is provided, and these wire-shaped bases are deformed and used so as to match the shape of the face of the mask user.

[0003]

However, this mask has the following drawbacks. First, since the mask originally touches the face, if the wire-shaped base is broken, there is a risk that this may damage the face, which is dangerous. Further, the wire-shaped mouthpiece is apt to rust due to sweat or washing, and when the rust appears on the cloth portion, it is visually unclean and unsanitary.

An object of the present invention is to provide a sanitary mask which is versatile in matching the shape of the nose of various people and which is highly safe and rustproof.

[0005]

In order to solve the above-mentioned problems, a hygiene mask according to the present invention has a body temperature at least on the upper side of the mask main body that covers the lower face including the nose portion, which crosses the nose. The gist of the present invention is to provide a core material made of a shape memory polymer adjusted so as to be softened and bendable.

[0006]

In such a mask, when the shape memory polymer core material provided on the mask body is warmed at body temperature, it softens to produce plasticity and is bent into an arbitrary shape by applying bending force with a finger or the like. be able to. Therefore, the shape of the mask can be adapted to the shape of the nose of various people, and the mask and the face can be closely attached without a gap.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Some embodiments of the present invention will be described below with reference to the drawings. The sanitary mask 1 shown in FIG. 1 has a mask body 3 provided with hanging straps 2 made of rubber or the like at both ends. The mask body 3 is made of a woven cloth such as gauze and has a horizontally long rectangular shape, and as shown in FIGS. 2 and 3, an inner cloth portion 3a, an inner cloth portion 3b and an outer cloth portion 3c.
Have a triple structure that is overlapped with each other, and they are sewn together by the seams 3d on both sides as shown in FIG.

A core material 4 made of a shape memory polymer is provided on the upper side of the mask body 3 along the upper side. The shape-memory polymer core material 4 has a thin strip shape, and as shown in FIG. 3, an inner cloth portion 3b sandwiched between the inner cloth portion 3a and the outer cloth portion 3c described above.
It is accommodated in the upper side portion and is confined by the formation of the seam 3e so as not to be largely displaced or dropped from the upper side portion.

The core material 4 made of a shape memory polymer is made of, for example, a polyurethane polymer material and can be obtained by an appropriate molding method such as injection molding, extrusion molding or press molding. In general, the shape memory polymer exhibits dynamic characteristics as shown in FIG. 5, but the temperature of the boundary at which the glass state transitions to the rubber state is set in the range of about 20 to 37 ° C., and particularly about 35 ° C. It is desirable to be set. If this softening temperature is too high, it will be difficult to freely bend and deform even if it is warmed at body temperature, while if it is too low, it will be too soft at the body temperature level and it will be difficult to maintain a constant bent shape. It is better to determine the temperature conditions.

In the sanitary mask 1 as described above, the shape-memory polymer core material 4 provided in the mask 1 is warmed by the body temperature of a finger, a nose, etc.
By applying a bending force, the upper side of the mask 1 including the core material 4 can be easily bent into a chevron shape along the shape of the nose of the mask user. FIG. 6 shows the state in a slightly exaggerated manner. As shown, the strip-shaped core member 4 can be bent into a chevron shape while twisting upward along the nose R.

As a result, the mask 1 is applied to the nose.
A gap is less likely to occur between the face and the face, and the shape close to the close contact state is held by the core material 4.

When returning to the original straight shape,
If you push it while warming it with the body temperature of your finger, you can easily restore it to its original shape.

As shown in the structure of FIG. 3, for example, the inner cloth portion 3a is made smaller, and the outer cloth portion 3c is made the inner cloth portion 3 as shown in FIG.
It can also be constructed integrally with b to reduce the thickness.

Further, as another embodiment, the shape memory polymer core material 14 is not linear, but has a shape in which both ends thereof are curved downward as shown in FIG. The shape may be curved in an arc shape.
This is because the mask main body 3 is pulled by the strap 2.
This is because the core material 14 conforms to the shape of the core material 14 when both sides of the core material are contracted.

As yet another embodiment, a core material 24 made of a shape memory polymer shown in FIG. 8 may be employed, for example, a shape in which the upper portion is bulged upward and both side portions are recessed inward. The core material 24 is attached to the mask body 3 with threads or the like at the stoppers 6 at a plurality of locations. According to the core material 24 having this shape, the adhesion between the mask and the face can be enhanced in the nose, cheeks, and chin on the lower face.

The present invention is based on the knowledge of those skilled in the art.
Needless to say, it can be implemented in various modified modes.

[0017]

According to the sanitary mask of the present invention, the shape-memory polymer core material allows the mask shape to be universally matched to the nose shape of various people. Since it is difficult to create a gap between them, it has an excellent dustproof effect. In addition, since the shape memory polymer is used for the core material, there is no worry in terms of safety and there is no risk of rusting compared with the case of using a metal wire-shaped die, which is hygienic.

Further, when the mask is washed in hot water at a predetermined temperature or higher, the core material made of the shape memory polymer is softened and freely bent and deformed. No, and if the mask is dried after washing, the core material can be returned to its original state.

[Brief description of drawings]

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

FIG. 2 is a sectional view taken along line AA.

FIG. 3 is a BB cross-sectional view thereof.

FIG. 4 is a sectional view of another embodiment.

FIG. 5 is a graph showing general kinetic properties of shape memory polymers.

6 is an explanatory view of a mounted state of the mask of FIG.

FIG. 7 is a simplified front view of another embodiment of the present invention.

FIG. 8 is a simplified front view of yet another embodiment.

[Explanation of symbols]

 1 Sanitary mask 3 Mask body 4, 14, 24 Core material made of shape memory polymer

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[Procedure amendment]

[Submission date] June 12, 1993

[Procedure Amendment 1]

[Document name to be amended] Statement

[Correction target item name] 0009

[Correction method] Change

[Correction content]

The core material 4 made of a shape memory polymer is made of, for example, a polyurethane polymer material and can be obtained by an appropriate molding method such as injection molding, extrusion molding or press molding. In general, the shape memory polymer exhibits dynamic characteristics as shown in FIG. 5, but the temperature of the boundary at which the glass state transitions to the rubber state is set in the range of 20 to 37 ° C., and particularly 25 to 35 ° C. It is desirable to set it to a degree. If this softening temperature is too high, it will be difficult to freely bend and deform even if it is warmed at body temperature, while if it is too low, it will be too soft at the body temperature level and it will be difficult to maintain a constant bent shape. It is better to determine the temperature conditions.

Claims (1)

[Claims] 1. A mask main body covering a lower face including a nose part is provided with a core material made of a shape-memory polymer adjusted so as to be softened and bendable by body temperature at least on an upper side part across the nose. Hygiene mask characterized by that.