JPH08191897A - Mask - Google Patents

Abstract

PURPOSE: To eliminate a gap between a filtering part and a face with a soft touch on the face by using a mask sealed in the perimeter of a protruding part provided at both ends of the filtering part sealed and containing a heat adhesive fiber having an opening for letting a string for mounting mounted at the protruding part to eliminate the leakage of air. CONSTITUTION: A mask has a seal 4 formed on the periphery of a filtering part 2 and a seal 5 formed on the periphery of a protruding part 3. The seals 4 and 5 are formed by applying sealing means such as ultrasonic seal or heat seal on a woven cloth containing a heat adhesive fiber and an opening 6 or a slit is formed at the protruding part 3 surrounded by the seals 4 and 5. The seals 4 and 5 may be formed separately. When the mask has two sheets of cloth laminated, the outer circumference of the filtering part is sealed. Hence, it is desired to seal the outer circumference of the protruding part simultaneously. Especially in the case of a molded mask, it is preferable that sealing work is applied simultaneously during molding.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mask made of a non-woven fabric containing a heat-adhesive fiber having protrusions whose outer periphery is sealed at both ends of a filter.

[0002]

2. Description of the Related Art Conventionally, a string for wearing, for example, a rubber string attached to both ends of a mask by stapler or sewing is used. However, in this mask, it takes time to determine the attachment position of the attachment string and perform the attachment process, and there are gaps around the stapler needle of the mask body and around the sewn thread, which causes leakage. It could be the cause. In addition, the length of the cord cannot be adjusted for this mask, making it difficult to use a rubber cord with a round cross section.
Generally, a flat rubber cord is used, but there is a problem that the flat rubber cord puts a heavy burden on the ear when it is hung on the ear. Further, it is known that an edge portion which is fused and integrated is formed on the peripheral edge of a mask, and a hole for threading or a slit is provided in the edge portion. However, in this mask, the fused and integrated edge hits the face and gives a hard feeling, and the edge does not easily follow the shape of the face. There is a problem that a gap is likely to occur between the face.

[0003]

Therefore, as a result of various studies in order to solve these problems, the inventor of the present application provided protrusions at both ends of the filter portion whose outer periphery is sealed, and surrounds the protrusions. We have succeeded in solving these problems by developing a mask containing a heat-adhesive fiber which is provided with an opening or slit for sealing the cord and attaching a string to the protrusion.

[0004]

SUMMARY OF THE INVENTION The present invention solves the problems of the prior art, in which projecting portions are formed at both ends of a sealed filtration portion, and the periphery thereof is sealed.
The present invention relates to a mask including a heat-adhesive fiber in which an opening or a slit to which a string for attachment is attached is provided on the protrusion.

The mask of the invention of this application is mainly suitable for a shaped mask. The mask of the invention of this application is made of a non-woven fabric containing heat-adhesive fibers, and another filter medium may be laminated between the non-woven fabrics. As the filter material, a non-woven fabric composed of ultrafine fibers such as melt blown non-woven fabric, a non-woven fabric containing divided fibers, a hydroentangled non-woven fabric, a non-woven fabric obtained by electretizing these non-woven fabrics, or powder particles made of an adsorbent such as activated carbon A fiber layer supporting a body can be preferably used, but an electret-treated meltblown non-woven fabric having an excellent dust collecting ability is particularly preferable.

As shown in FIG. 1, the mask of the present invention is provided with a seal 4 around the periphery of the filter 2 and a seal 5 around the periphery of the protrusion 3. The seals 4 and 5 are formed by applying sealing means such as ultrasonic sealing and heat sealing to a non-woven fabric containing heat-bondable fibers. An opening 6 or a slit is formed in the protruding portion 3 surrounded by the seals 4 and 5.

Since the protruding portion 3 is not substantially fused except for the outer periphery, it gives a soft feeling even if it comes into contact with the face during wearing, and moreover, it has a shape of the face depending on the force from the string when wearing. Since it can be deformed so that there is no gap between the filter and the face. Note that the seals 4 and 5 may be formed separately, but when the mask is a laminate of two or more cloths, the outer periphery of the filtering portion is sealed, so that the outer periphery of the protruding portion is simultaneously sealed at this time. Is desirable. Particularly, in the case of a molding mask, it is advisable to perform these sealing processes at the same time as molding. It is preferable that the protrusions 3 are formed so as to protrude at both ends of the filter portion of a normal mask, and the periphery of the protrusions is sealed as shown in FIG. Portions other than the outer periphery may be partially sealed. By doing so, the strength of the protrusion is increased.

The opening 6 provided in the protrusion has a circular shape, an elliptical shape,
The shape may be a rectangle, a rhombus, or the like, preferably a circle, but may be formed by a slit. The formation of the opening is
It can be performed after the formation of the seal portion, and it may be performed at the same time, for example, at the time of punching and cutting for adjusting the outer shape after the formation of the forming mask or the like, but the opening may be formed at the same time as the formation of the seal portion. The opening edge of the opening or slit is preferably sealed. This makes it less likely that damage will occur due to the force received from the cord during mounting.

As shown in FIGS. 3 and 4, a rubber cord such as a round rubber or a flat rubber may be used as the cord 7 for attachment, and a cloth cord such as a woven fabric or a knitted fabric may be used. Strings are preferred. Further, it is preferable that the cord for attachment is attached to the opening so that the length of the cord can be adjusted. The length of the string 7 for attachment can be adjusted by a conventionally known means, but it is preferable to use a stopper such as a string fastening jig 8 as shown in FIGS.

As the heat-adhesive fibers used for the non-woven fabric, polypropylene fibers, polyolefin fibers such as polyethylene fibers, copolyester fibers, copolyamide fibers and the like are used, but especially polypropylene / polyethylene composite fibers. Polyester / polyethylene composite fibers and undrawn polyester fibers are preferred. The ratio of the heat-bondable fibers to the constituent fibers of the non-woven fabric is 3
It is 0 to 100%, particularly preferably 50 to 100%. If the proportion of the heat-adhesive fibers is less than the above range, it may be difficult to stably maintain the shape, or the strength of the seal portion may be weakened.

The basis weight of a non-woven fabric containing heat-bondable fibers is 80
-300 g / m < ² > is preferable and 120-200 g / m < ² > is especially preferable. If it is less than 80 g / m ² , the shape retention may not be sufficient, the mask surface may be wrinkled, or the seal strength may be insufficient, and if it exceeds 300 g / m ² , the mask weight becomes too large and worn. It may make you feel uncomfortable.

[0012]

【Example】

Example 1 A nonwoven fabric having a basis weight of 120 g / m ² containing 40% by weight of polyester fiber and 60% by weight of polyethylene / polypropylene composite fiber as a heat-bonding fiber, and a basis weight of 110 g / m ² composed of 100% by weight of polyethylene / polypropylene composite fiber.
60 g / m ^{2 of} activated carbon particles were sandwiched between the m ² non-woven fabric and the non-woven fabric. At the same time as thermoforming this laminate,
The peripheral edge of the protruding portion was ultrasonically sealed, the opening was formed in the protruding portion, and the peripheral edge of the opening was ultrasonically sealed to produce a molding mask as shown in FIG. A rubber band was passed through the opening and tied up.

Comparative Example 1 A molding mask was obtained in the same manner as in Example 1 except that the entire protruding portion was sealed. A flat rubber cord was positioned on the molding mask and then stapled. In this mask, the fusion-integrated edge gives a hard feel to the face, and the edge is hard to follow the shape of the face.

Example ² A nonwoven fabric having a basis weight of 120 g / m ² containing 40% by weight of polyester fiber and 60% by weight of polyethylene / polypropylene composite fiber as a heat-bonding fiber, and polyester fiber 35
Two pieces of electretized polypropylene meltblown non-woven fabric having a basis weight of 40 g / m ² are sandwiched between a non-woven fabric having a basis weight of 60 g / m ² containing 50% by weight and polyethylene / polypropylene composite fiber as a heat-adhesive fiber of 65% by weight. It was laminated with. At the same time that this laminate was thermoformed, the periphery of the filtering portion and the protruding portion was ultrasonically sealed, and an opening was formed in the protruding portion and the opening peripheral edge was ultrasonically sealed to produce a molding mask as shown in FIG. A flat rubber string was passed through this opening and fixed with a string-fixing jig whose length can be adjusted.

Comparative Example 2 A molded mask was obtained in the same manner as in Example 2 except that the entire protruding portion was sealed. A flat rubber cord was positioned on the molding mask and then stapled. In this mask, the fusion-integrated edge gives a hard feel to the face, and the edge is hard to follow the shape of the face.

[0016]

According to the mask of the present invention, the outer periphery of the filtering portion is sealed, and since the opening is formed in the projecting portion partitioned by the sealing from the filtering portion, there is no fear of air leakage, and Since the protruding part is not substantially fused except for the outer circumference, it gives a soft feeling even if it comes into contact with the face during wearing, and it can be deformed to follow the shape of the face according to the force from the string when wearing. , It is difficult to create a gap between the filtering part and the face. Further, since the filter portion and the protruding portion are continuous, there is no fear of leakage at the joint portion or damage at the joint portion, as in the case of joining the filter medium and the attachment member, for example. Furthermore, since the string is inserted through the opening or slit, the position where the string is attached is fixed, the installation process is simple, and the length of the string can be adjusted so that various types of strings can be used. Is.

[Brief description of drawings]

FIG. 1 is a plan view of a molding mask.

FIG. 2 is a sectional view of a protruding portion of a molding mask.

FIG. 3 is a plan view of a molding mask through which a string is passed.

FIG. 4 is a plan view of a molding mask in which an adjustable string is attached to the molding mask.

FIG. 5 is an enlarged cross-sectional view of a cord portion of a molding mask.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Molding mask 2 Filtration part 3 Projection part 4 Sealing of filtration part 5 Sealing of projection part 6 Opening 7 Rubber string 8 Rubber stop jig 9 Sealing of opening edge

Claims (3)

[Claims] 1. A filter part having a sealed outer circumference, and projecting parts projecting at both ends of the filter part and having a sealed outer circumference of the projecting part, wherein the projecting part is provided with an opening for attaching a string for attachment. A mask containing heat-bondable fibers, which is provided with slits. 2. The mask according to claim 1, wherein the opening or the opening edge of the slit is sealed. 3. The mask according to claim 1, wherein the length of the lace for wearing is adjustable.