JP2018003207A - Face mask - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a face mask which shows excellent feeling in using as both side end parts of a face mask body part are soft, and has both side end parts that are sufficiently reinforced.SOLUTION: A face mask in this invention includes a face mask body part comprising a first face and a second face on the opposite side of the first face and a fixing part which is connected to the face mask body part for fixing the face mask body part to a lower part of a face of a wearer. In each of the side end parts of the face mask body part, a non-woven fabric comprising a plurality of layers is sandwiched, and the total amount of basis weight of the non-woven fabric laminated on a first face side and a second face side of each side end part is 25 g/mor more and 50 g/mor less.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a mask having a mask body portion that covers a mouth when worn and a fixing portion.

  2. Description of the Related Art Conventionally, a disposable mask in which an ear strap or the like is attached to a mask body portion in which nonwoven fabrics or the like are laminated so as to have a plurality of layers is known. Since the mask main body covers the mouth and nasal cavity of the wearer, it is preferable that no gap is generated between the mask main body and the lower part of the face of the wearer when the mask is worn. On the other hand, if the mask body and the mouth or nasal cavity are in close contact, the wearer may feel stuffy.

  For this reason, in recent years, disposable masks have been developed in which the mask body is three-dimensional when worn by applying pleating to the mask body. However, when such a mask is worn, there is a problem that a gap is easily generated between the mask main body and the lower part of the wearer's face, and the original function of the mask is not sufficiently exhibited.

  In order to prevent a gap from being generated between the mask body and the lower part of the wearer's face even when the mask body is pleated, for example, a nose fitting member is provided at the upper end of the mask body. It is done to attach. Since the nose fitting member is bent along the shape of the wearer's nose, the upper end and the side end of the mask main body portion can easily fit along the shape of the wearer's face.

In addition, there is also known a mask in which an adhesive portion is provided at an end of the mask main body in order to reduce a gap generated between the mask main body and the lower part of the wearer's face (Patent Document 1). Here, it has been proposed to improve the adhesion between the mask main body and the lower part of the face via an adhesive portion provided at the end of the mask main body.
Patent Document 2 discloses a mask in which the shape of a reinforcing band provided on the side end portion is devised in order to reduce a gap generated between the side end portion of the mask main body portion and the lower part of the face. Here, the folded piece of the reinforcing band extends toward the center of the mask main body, and the folded piece functions to close a gap formed between the mask main body and the cheek when worn.

Japanese Patent No. 4648441 Japanese Patent No. 5615195

  As described above, masks with various contrivances have been developed. However, since the mask body part directly touches the wearer's face, it is also required to have softness and excellent tactile sensation. . In particular, a person who wears a mask for a long time has a strong tendency to seek a mask having excellent usability and wearing comfort. However, in conventional disposable masks, discomfort may occur due to rubbing between the side edges and the cheeks of the mask main body, and good usability has not been achieved at a high level. On the other hand, since the mask needs to be able to withstand a plurality of times of desorption and deformation, both end portions of the mask main body need to have a certain degree of strength in addition to the texture such as softness.

  Therefore, in order to solve such a problem of the prior art, the present inventors have proceeded with a study for the purpose of providing a mask that is soft on both side ends of the mask body and excellent in feeling when worn. . The present inventors have also studied for the purpose of providing a mask in which both end portions of the mask body are sufficiently reinforced.

As a result of intensive studies to solve the above problems, the present inventors bonded each side end portion of the mask main body portion with a non-woven fabric composed of a plurality of layers, and were laminated on each surface of the side end portion. It has been found that by making the total basis weight of the nonwoven fabric within a predetermined range, a mask having excellent usability when worn can be obtained by softening both side ends of the mask body. The present inventors have found that both end portions of such a mask main body have a strength that can withstand multiple desorptions and deformations, and have completed the present invention.
Specifically, the present invention has the following configuration.

[1] A mask main body having a first surface and a second surface opposite to the first surface, and a fixing portion connected to the mask main body for fixing the mask main body to the lower part of the wearer's face And a non-woven fabric composed of a plurality of layers is attached to each side end of the mask body, and the total of the non-woven fabric laminated on the first surface side and the second surface side of each side end portion Masks each having a basis weight of 25 g / m ² or more and 50 g / m ² or less.
[2] The mask according to [1], wherein the basis weight of each layer of the nonwoven fabric is 10 g / m ² or more and 30 g / m ² or less.
[3] The mask according to [1] or [2], wherein a nonwoven fabric composed of two layers is attached to each side end of the mask main body.
[4] The mask according to any one of [1] to [3], wherein each side end portion has a weld portion for fixing the nonwoven fabric, and the total area of the weld portion is 5 mm ² or more and 100 mm ² or less.
[5] The mask main body has at least a first nonwoven fabric, a second nonwoven fabric, and a shape maintaining layer between the first nonwoven fabric and the second nonwoven fabric, and any one of [1] to [4] The mask described in 1.
[6] The mask according to [5], wherein the mask body further includes a fine particle block layer.
[7] The mask according to any one of [1] to [6], wherein the mask body has a fold that can form a pleated three-dimensional shape.
[8] The mask according to any one of [1] to [7], wherein an upper end portion of the mask main body includes a nose fitting member that can be deformed so as to conform to a shape of the nose of the mask wearer.

  ADVANTAGE OF THE INVENTION According to this invention, the both-ends part of a mask main-body part is soft, and the mask excellent in the usability | use_condition at the time of wear can be obtained. In addition, the mask of the present invention has excellent durability because the strength at both end portions is sufficient.

FIG. 1 is a plan view illustrating the structure of the mask of the present invention. FIG. 2 is a cross-sectional view of the mask body of the present invention. FIG. 3 is a cross-sectional view of the mask body of the present invention. FIG. 4 is a diagram for explaining a mask manufacturing process according to the present invention.

  Hereinafter, the present invention will be described in detail. The description of the constituent elements described below may be made based on representative embodiments and specific examples, but the present invention is not limited to such embodiments.

(mask)
The present invention relates to a mask having a mask main body and a fixing portion connected to the mask main body for fixing the mask main body to the lower part of the face of the wearer. The mask main body has a first surface and a second surface opposite to the first surface. A plurality of layers of non-woven fabric are attached to each side end of the mask main body, and the total basis weight of the non-woven fabric laminated on the first surface side and the second surface side of each side end portion is 25 g each. / M ² or more and 50 g / m ² or less.
Since the mask of this invention has the said structure, the both ends of a mask main-body part are soft, and it is excellent in the usability | use_condition at the time of wear. Moreover, since the mask of this invention has the said structure, the nonwoven fabric which covers both edge parts has sufficient intensity | strength, and also the reinforcement of both edge parts is fully performed.

  FIG. 1 is a plan view for explaining the structure of the mask of the present invention, and is a plan view of the mask body 10 viewed from the first surface side. As shown in FIG. 1, the mask 100 of the present invention has a mask main body 10 and a fixing portion 30. The mask main body 10 has a front surface and a back surface, the front surface corresponds to the first surface of the mask main body portion 10, and the back surface corresponds to the second surface of the mask main body portion 10. A 2nd surface (back surface) is a surface distribute | arranged to a wearer's face side at the time of wearing the mask 100. FIG.

  The mask main body 10 has side end portions 12 at both ends in the left-right direction. In this specification, in FIG. 1, the direction represented by the Y-axis direction is referred to as the up-down direction, and the direction represented by the X-axis direction is referred to as the left-right direction. Further, when the mask 100 is worn, the side end portion of the mask main body portion 10 that comes to the wearer's right hand side is referred to as the right end portion, and the side end portion of the mask main body portion 10 that comes to the wearer's left hand side is the left end. This is called the department.

  The side end portion 12 is a region having a certain width from the edge of the mask main body portion 10, for example, a region having a width of 2% or more and 10% or less with respect to the width in the left-right direction of the mask main body portion 10. . Actually, a region where the nonwoven fabric for the side end is laminated is referred to as a side end 12.

A non-woven fabric 14 composed of a plurality of layers is attached to each side end 12 of the mask main body 10. Therefore, a plurality of layers of nonwoven fabrics are laminated on the first surface side and the second surface side of each side end portion 12 of the mask main body portion 10. The total basis weight of the nonwoven fabric laminated on the first surface side and the second surface side of each side end portion may be 25 g / m ² or more, preferably 30 g / m ² or more, and preferably 35 g / m. More preferably, it is ² or more. Moreover, the total fabric weight of a nonwoven fabric should just be 50 g / m < ² > or less respectively, and it is preferable that it is 46 g / m < ² > or less. The total basis weight is the total basis weight of the nonwoven fabric laminated on each side end portion of each surface, for example, the total basis weight of the nonwoven fabric laminated on the right end portion on the first surface side. It is. Similarly, the total basis weight of the nonwoven fabric laminated on the left end portion on the first surface side and the total basis weight of the nonwoven fabric laminated on the right end portion or the left end portion on the second surface side are also within the above range. Preferably there is. Moreover, the said total fabric weight is a total fabric weight of a non-welding part, and a total fabric weight can be measured by cutting out the non-welding part of the nonwoven fabric laminated | stacked on each area | region.

The basis weight of each layer of the nonwoven fabric composed of a plurality of layers laminated on each side end of the first surface and the second surface is preferably 10 g / m ² or more, more preferably 12 g / m ² or more. It is preferably 14 g / m ² or more. The basis weight of each layer of the nonwoven fabric is preferably 30 g / m ² or less, more preferably 25 g / m ² or less, and further preferably 22 g / m ² or less. The said fabric weight is a fabric weight per one layer of nonwoven fabric laminated | stacked on each side edge part of each surface. The basis weight per layer is the basis weight per layer of the non-welded portion, and can be measured after cutting out the non-welded portion of the nonwoven fabric laminated on each region to form a single layer.
In the present invention, by setting the total basis weight of the nonwoven fabric composed of a plurality of layers fixed to each side end portion on the first surface side and the second surface side, and the basis weight amount of each layer within the above range, both end portions It is possible to sufficiently reinforce the end portions on both sides while increasing the softness.

  The mask body 10 is composed of a nonwoven fabric sheet for the mask body. The mask body may be composed of a single nonwoven sheet, but preferably has a structure in which two or more nonwoven sheets are laminated. The number of laminated nonwoven sheets is preferably 2 or more, and more preferably 3 or more. The number of laminated nonwoven sheets is preferably 10 or less, and more preferably 5 or less.

  As a nonwoven fabric sheet, the sheet | seat which consists of a spun bond (SB) nonwoven fabric, a point bond (PB) nonwoven fabric, a spunlace (SL) nonwoven fabric, and an air through (AT) nonwoven fabric can be used, for example.

  The mask main body 10 preferably has another functional layer in addition to the nonwoven fabric sheet. Examples of other functional layers include a shape maintaining layer and a fine particle block layer. The shape maintaining layer is preferably a sheet for maintaining the three-dimensional shape of the mask body, and is preferably a mesh sheet made of resin. By providing the mask main body portion 10 with the shape maintaining layer, the three-dimensional shape formed after developing the pleated shape described later can be maintained for a long time. The fine particle block layer is preferably a filter sheet having a function of collecting dust, bacteria, viruses, pollen and the like. Such a fine particle block layer may be a sheet of resin or the like on which a substance having a collection function is adsorbed, or may be a non-woven sheet having a collection function.

  It is preferable that the mask main-body part 10 has a 1st nonwoven fabric and a 2nd nonwoven fabric, and has a shape maintenance layer between a 1st nonwoven fabric and a 2nd nonwoven fabric. Moreover, it is preferable that the mask main-body part 10 has a fine particle block layer further. In this case, the fine particle block layer is preferably disposed between the first nonwoven fabric and the second nonwoven fabric. For example, the first nonwoven fabric, the shape maintaining layer, the fine particle block layer, and the second nonwoven fabric are arranged in this order. A laminated structure can also be used. The shape maintaining layer and the fine particle block layer are laminated so as to exist also on the side end 12 of the mask main body 10.

  The mask main body 10 is formed by welding the end regions after making the above-described various sheets into a laminated structure. In addition, when the mask main-body part 10 has mesh-like functional layers, such as a shape maintenance layer, you may use what integrated the nonwoven fabric and the functional layer with the adhesive agent etc., and used.

  The mask body 10 preferably has a crease that can form a pleated three-dimensional shape. Such a crease is formed in a mask shape on the mask main body 10, and the shape is held at the end by joining both end portions. That is, unfolding of the folds is prevented at the joint portions at both side end portions, and the folds are unfolded at the time of wearing in the intermediate region located between the both side end portion regions. Is formed. It should be noted that the pleats can be closed and not bulky when not attached.

  FIG. 2 is a cross-sectional view taken along line AA ′ of the mask main body 10 in FIG. As shown in FIG. 2, the mask main body 10 is formed with a plurality of folds (an ridge), and the fold line is formed to extend in the left-right direction. As shown in FIG. 2, in the mask main body 10, the fold mountain (an hill) 40 is preferably formed upward or downward, and at least one of the fold mountain (an hill) 40. Preferably, one is formed upward and at least one is formed downward. In FIG. 2, the mask main body 10 has a fold mountain (an hill) 40 a formed upward and a fold mountain (an hill) 40 b, 40 c, 40 d formed downward. In addition, the form and the number of the fold mountain (Kashiyama) shown in FIG. 2 can be appropriately selected as necessary.

  As described above, the mask main body 10 has the side ends 12 at both ends in the left-right direction. A side end nonwoven fabric 14 is fixed to the side end portion 12, and such a nonwoven fabric 14 is sometimes called a reinforcing band. A nonwoven fabric 14 composed of a plurality of layers is attached to each side end portion 12. The nonwoven fabric 14 composed of a plurality of layers is preferably fixed so as to sandwich the front and back surfaces of the side end portion 12 from the side ends. The layer configuration of the nonwoven fabric 14 composed of a plurality of layers is preferably 2 or more, more preferably 2 or more and 10 or less, and still more preferably 2 or more and 5 or less. Among these, two layers are particularly preferable from the viewpoint of production efficiency and production cost. That is, in this invention, it is preferable that the nonwoven fabric which consists of two layers adheres to each side edge part of a mask main-body part. In this invention, by fixing the nonwoven fabric 14 which consists of such a several layer to the side edge part 12, the softness of a both-sides edge part can be raised and the usability | use_condition at the time of mask wear can be raised.

  3 is a cross-sectional view taken along line BB ′ of the mask main body 10 in FIG. As shown in FIG. 3, a non-woven fabric 14 composed of a plurality of layers is attached to the side end 12 of the mask main body 10. As shown in FIG. 3A, the non-woven fabric 14 may be a laminate of two non-woven fabrics (non-woven fabric 14a and non-woven fabric 14b). You may fix so that 12 front and back may be inserted | pinched from a side end. Further, as shown in FIG. 3B, the nonwoven fabric 14 is formed by folding one nonwoven fabric 14 in half along the center line in the width direction, and further folding it in the same direction. You may fix so that a back surface may be inserted | pinched from a side end. In addition, the width direction of the nonwoven fabric 14 is a direction in which the short side of the nonwoven fabric extends. When the nonwoven fabric 14 is folded in half at the center line in the width direction, the fold line is formed in parallel to the length direction (long side direction) of the nonwoven fabric. . In the present invention, from the viewpoint of simplifying the manufacturing process, etc., it is preferable to fix the nonwoven fabric 14 so as to have a configuration as shown in FIG.

When the nonwoven fabric 14 is comprised from one nonwoven fabric, it is preferable that the width | variety of one nonwoven fabric is 10 mm or more and 100 mm or less. Further, the basis weight of one nonwoven fabric is preferably 10 g / m ² or more, more preferably 12 g / m ² or more, and further preferably 14 g / m ² or more. The basis weight of the nonwoven fabric is preferably 30 g / m ² or less, more preferably 25 g / m ² or less, and further preferably 22 g / m ² or less.

  The nonwoven fabric 14 is fixed to the mask main body 10 by the welded portion 15. Welding of the welded portion 15 is performed after forming the above-described fold (mountain mountain) 40 on the mask main body 10 and laminating the nonwoven fabric 14 composed of a plurality of layers.

  As shown in FIG. 1, the welded portion 15 is preferably provided intermittently at the side end portion 12, and the side end portion 12 has a non-welded portion where the welded portion 15 is not provided. Is preferred. In the non-welded portion, only the nonwoven fabric is laminated on the side end portion 12 of the mask main body portion 10, and in the non-welded portion, the nonwoven fabric is laminated while including an air layer.

The total area of the welded portion 15 is preferably 5 mm ² or more, more preferably 7 mm ² or more, and even more preferably 10 mm ² or more. Further, the total area of the welded portion 15 is preferably 100 mm ² or less, more preferably 50 mm ² or less, and further preferably 35 mm ² or less. In addition, the total area of the welding part 15 is the total area of the area of the welding part 15 when the welding part 15 is seen from the 1st surface side. By setting the total area of the welded portion 15 within the above range, the softness of both end portions can be more effectively increased. Moreover, the side edge part 12 becomes easy to follow the shape of a wearer's cheek part by making the total area of the welding part 15 into the said range.

  The total area of the welded portion 15 is preferably 50% or less, more preferably 40% or less, and even more preferably 30% or less of the area of one side of the side end portion 12. Further, the total area of the welded portion 15 is preferably 1% or more of the area of one side of the side end portion 12. By setting the ratio of the total area of the welded portion 15 within the above range, the softness of both end portions can be increased more effectively.

  A fixing portion 30 is fixed to the side end portion 12. It is preferable that the fixing | fixed part 30 is comprised from a loop-shaped or string-like elastic material. Examples of the stretchable material include a rubber yarn and cotton unwoven band, a knitted net of resin filaments, a stretchable nonwoven fabric, and the like. It is preferable that the fixing | fixed part 30 is a string-like member formed from such a stretchable material. The fixing part 30 is preferably provided on each of the left and right sides of the mask main body part 10, and the fixing part 30 is preferably an ear strap. Further, it may be a series of loop-shaped members having the left and right sides of the mask main body 10 as the start point and the end point, respectively, or a headband hung on the wearer's head. The fixing portion 30 is fixed to the mask main body portion 10 by being welded to a predetermined position of the side end portion 12. In FIG. 1, the fixing portion 30 is welded to the welding region 18 in the upper end and lower end regions of the side end portion 12. In the welding region 18, since it is necessary to firmly fix the fixing portion 30, it is preferable that a large number of welding portions and a continuous welding portion having a mesh shape are formed.

  The mask main body 10 preferably has an upper end 16 and a lower end 17. In the upper end part 16 and the lower end part 17, it is preferable that the upper end and the lower end are each covered with a nonwoven fabric so that the edge part of laminated bodies, such as a nonwoven fabric which comprises the mask main-body part 10, is not exposed. In this case, the upper end portion 16 and the lower end portion 17 are each laminated with a non-woven fabric different from the non-woven fabric constituting the mask main body portion 10 so that the front and back surfaces of the upper end portion 16 and the lower end portion 17 are sandwiched from the upper end and the lower end, respectively. It may be fixed. The nonwoven fabric sandwiching the upper end portion 16 and the lower end portion 17 may be a single layer or a plurality of layers. Alternatively, one layer of the outermost non-woven fabric constituting the mask main body 10 may be extended more than the other layers, and the edge may be sandwiched between the extended portions and then fixed. In FIG. 2, after the nonwoven fabric layer on the second surface side (back surface side) is extended more than the other layers, the extension portion is folded back so as to be sandwiched between the first surface side (front surface side) and then fixed. ing.

  The upper end portion 16 preferably includes a nose fit member 28. The nose fitting member 28 is a member that can be deformed so as to conform to the shape of the nose of the mask wearer. As the nose fit member 28, for example, a resin plate-like or rod-like member is preferably used. Further, a metal tape or the like may be used as the nose fit member 28.

  The nose fit member 28 is preferably embedded so as to extend in the left-right direction of the upper end portion 16. In addition, after the nose fit member 28 is disposed at a predetermined position of the upper end portion 16, it is preferable that movement in the vertical direction and the horizontal direction is restricted. Therefore, a welded portion 23 is formed around the nose fit member 28 at the upper end portion 16. Specifically, as shown in FIG. 1, the welded portions 23 a are intermittently formed in a line shape above and below the nose fit member 28, and further, the left and right direction of the nose fit member 28. Preferably, two welded portions 23b are formed with the nose fit member 28 interposed therebetween. Thus, by providing the welding part 23a and the welding part 23b so that the periphery of the nose fitting member 28 may be enclosed, the movement of the nose fitting member 28 can be restrict | limited. In the welded portion 23a and the welded portion 23b, all layers including the laminated nonwoven fabric and the folded nonwoven fabric are welded so as to wrap the nose fit member.

  The fixing of each layer at the lower end 17 is achieved by the welded portion 25. In the welding part 25, all the layers including the laminated nonwoven fabric and the folded nonwoven fabric in the lower end part 17 are welded. Since it is only necessary to fix each layer at the lower end portion 17, for example, the welding portion 25 as shown in FIG. 1 may be provided intermittently so as to form a line shape.

  Examples of the method for welding the upper and lower ends and the left and right side end portions and the fixing portion 30 include methods such as sewing with a sewing thread, adhesion with a hot melt adhesive, heat sealing, ultrasonic welding, and the like. . Among these, it is preferable to employ an ultrasonic welding method. The area and interval for welding can be appropriately adjusted according to each member to be fixed and the fixing strength.

(Production method)
The manufacturing method of the mask of this invention includes the process of fixing the nonwoven fabric for side edge parts to the side edge part of a mask main-body part. In this step, a non-woven fabric for side edges composed of a plurality of layers is attached to the side edges of the mask body. Moreover, it is preferable to include the process of obtaining the nonwoven fabric for side edge parts which consists of multiple layers before this process, and the process of obtaining the nonwoven fabric for side edge parts which consists of multiple layers is the process of laminating a nonwoven fabric, or 1 sheet The step of folding the non-woven fabric into a plurality of layers is preferred.

  FIG. 4 is a diagram for explaining a mask manufacturing process according to the present invention. In the mask manufacturing process of the present invention, first, a laminated structure of the mask main body is formed. The three upper right rolls in FIG. 4 are a first layer roll, a second layer roll, and a third layer roll, respectively. The roll for the first layer is preferably, for example, a roll of a first nonwoven fabric for the mask main body, and the roll for the second layer is preferably a roll of a shape maintenance layer (resin mesh layer), The three-layer roll is preferably a second nonwoven roll. Each sheet is stacked while winding the roll for the first layer to the roll for the third layer to form a laminated structure, and then the first welding of the three-layer laminate is performed in the first welding step. In a 1st welding process, the location used as a center part is temporarily welded, after cutting a laminated body of 3 layers at a post process. As a result, the three-layer structure is fixed.

Thereafter, a nose fit member is placed on the sheet wound from the roll for the first layer (on the first nonwoven fabric), and a third nonwoven fabric newly wound thereon is further laminated thereon. After the upper end of the second non-woven fabric is folded back so as to sandwich the laminate including the non-woven fabric of No. 3, the second welding is performed.
In the second welding step, a predetermined position of the upper end portion of the mask main body is second welded so that the welded portion described in FIG. 1 is formed. Further, in the second welding step, welding at a predetermined position of the lower end portion of the mask main body portion is also performed so that the welding portion illustrated in FIG. 1 is formed. Specifically, the upper and lower ends of the mask main body are welded so that the welds 23a and 23b and the weld 25 shown in FIG. 1 are formed.

  Next, pleating is applied to the mask main body portion where the upper and lower end portions are welded. The pleating process is performed, for example, by folding the mask main body so that a folded structure as shown in FIG. 2 is formed. After the mask main body is folded, the third welding is performed so that the positions to be the both end portions of the mask main body are fixed in a folded state. In the third welding step, welding is performed so that the end of the folded portion is fixed. Such a third welding step is also referred to as a three-dimensional shape maintaining function welding process.

  In the cutting process in FIG. 4, the sheet-like nonwoven fabric laminate that continuously flows on the process is cut into individual mask main bodies. At this time, the cutting position is adjusted so as to match the position where both end portions are welded in the third welding step.

  Subsequently, the nonwoven fabric for side edge parts is fixed to both side edge parts of each mask main body part. The non-woven fabric for the side end may be a laminate of two or more non-woven fabrics, and the non-woven fabric laminated in this way may be fixed so as to sandwich the front and back surfaces of each side end from the side end. . Moreover, the nonwoven fabric for side edges may be a single nonwoven fabric folded in half along the center line in the width direction. In this case, the folded nonwoven fabric is further folded in the same direction, and the front and back surfaces of the side end portions are fixed so as to be sandwiched from the side ends. In the manufacturing process of this invention, it is preferable that the process of obtaining the nonwoven fabric for side edges includes the process of folding one nonwoven fabric in half by the center line of the width direction. In addition, a nonwoven fabric obtained by folding a single nonwoven fabric in half along the center line in the width direction is wound in advance, and the front and back surfaces of each side end portion are sandwiched from the side edges while winding the folded nonwoven fabric in the fourth welding step. They may be arranged and welded.

  In a 4th welding process, the nonwoven fabric laminated | stacked so that the front and back of each side edge part may be inserted | pinched from a side edge is fixed to a mask main-body part. In the fourth welding step, the upper and lower ends of the mask main body are welded so that the weld 15 shown in FIG. 1 is formed.

  In the first to fourth welding steps described above, methods such as sewing with a sewing thread, adhesion with a hot melt adhesive, heat sealing, ultrasonic welding, and the like can be given. Among these, it is preferable to employ an ultrasonic welding method.

  Thereafter, fixing portions (ear straps) are attached to both end portions of the mask main body portion by welding to obtain a mask having a mask main body portion and a fixing portion (ear straps).

  The features of the present invention will be described more specifically with reference to examples and comparative examples. The materials, amounts used, ratios, processing details, processing procedures, and the like shown in the following examples can be changed as appropriate without departing from the spirit of the present invention. Therefore, the scope of the present invention should not be construed as being limited by the specific examples shown below.

Example 1
The mask of Example 1 was produced by the manufacturing process described in FIG. First, in order to form the mask body, the first nonwoven fabric, the shape maintenance layer (resin mesh layer), and the second nonwoven fabric were laminated, and the mask central portion of the three-layer laminate was first welded. Next, the nose fit member is placed on the first nonwoven fabric on the three-layer laminate so as to be in the position shown in FIG. 1, and the third nonwoven fabric is further laminated thereon so as to embed the nose fit member. The predetermined positions of the upper and lower ends of the mask main body were second welded so that the weld described in 1 was formed. After that, fold processing is performed by folding the mask body so that a folded structure as shown in FIG. 2 is formed, so that the positions to be the both end portions of the mask body are fixed in a folded state. A third weld was performed. In the cutting step in FIG. 4, the continuous sheet-like nonwoven fabric laminate was cut into individual mask main body portions. At this time, the cutting position was adjusted to match the position where both end portions were welded in the third welding step.

Subsequently, the nonwoven fabric for side edge part was fixed to the both-sides edge part of each mask main-body part. Under the present circumstances, the width | variety of the used nonwoven fabric for side edge parts is 40 mm, and is a nonwoven fabric which has the fabric weight shown in Table 1. Such a side end nonwoven fabric is equally folded in two so that the center line in the width direction is a crease, and the side end nonwoven fabric folded in half is further folded in two in the width direction center line, The first surface and the second surface of both side end portions were sandwiched from the edge side, and fourth welding was performed.
Thereafter, ear straps were attached to both end portions of the mask main body by welding to obtain a mask having a mask main body and a fixing portion (ear strap).

(Example 2)
In the step of fixing the side end non-woven fabric to both end portions of the mask body, two side end non-woven fabrics having a width of 20 mm and the basis weight shown in Table 1 are laminated, and the width direction of the two-layer non-woven fabric A mask was produced in the same manner as in Example 1 except that the first surface and the second surface of the both side end portions were sandwiched from the edge side and the fourth welding was performed while folding in half so that the center line of the film was a crease. did. In Table 1, the first non-woven fabric is a non-woven fabric in direct contact with the mask body, and the second non-woven fabric is a non-woven fabric disposed outside the first non-woven fabric.

(Example 3)
A mask was prepared in the same manner as in Example 2 except that the basis weight of each of the two side edge nonwoven fabrics having a width of 20 mm was changed as shown in Table 1.

Example 4
A mask was produced in the same manner as in Example 1 except that the basis weight of the non-woven fabric for side edges having a width of 40 mm was changed as shown in Table 1.

(Example 5)
A mask was prepared in the same manner as in Example 2 except that the basis weight of each of the two side edge nonwoven fabrics having a width of 20 mm was changed as shown in Table 1.

(Comparative Examples 1 and 2)
A mask was produced in the same manner as in Example 1 except that the basis weight of the non-woven fabric for side edges having a width of 40 mm was changed as shown in Table 1.

(Comparative Example 3)
A mask was prepared in the same manner as in Example 2 except that the basis weight of each of the two side edge nonwoven fabrics having a width of 20 mm was changed as shown in Table 1.

(Comparative Examples 4 and 5)
A mask was produced in the same manner as in Example 2 except that one piece of nonwoven fabric for side edges having a basis weight shown in Table 1 and a width of 20 mm was used.

(Evaluation)
(Strength)
The plane (first surface and second surface) of the mask main body was held in the hand so that the plane was parallel to the ground, and the left and right sides of 4 cm were sandwiched with fingers with the middle point of one side end portion sandwiched between them. In this state, the fingertip of the held finger was rotated 100 times in the vertical direction at the same time so that the midpoint of the side end portion was bent up and down. The state of the nonwoven fabric at the side end after bending was visually evaluated.
◎: No change at all ○: It seems that the nonwoven fabric is slightly stretched, but there is almost no change in the appearance. △: The nonwoven fabric is slightly stretched, but there is no problem. bad

(soft)
The mask main body was held in the hand with the plane (first surface and second surface) being horizontal with the ground, and the side edge on one side was touched while bending by hand, and the impression of surface texture was evaluated according to the following criteria.
◎: Very soft ○: Soft △: Slightly soft ×: Hard

  In the examples, the strength of the non-woven fabric provided at both end portions of the mask main body was sufficient, and the softness at both end portions was excellent.

DESCRIPTION OF SYMBOLS 10 Mask main-body part 12 Side edge part 14 Nonwoven fabric 15 Welding part 16 Upper end part 17 Lower end part 18 Welding area 23 Welding part 25 Welding part 28 Nose fitting member 30 Fixing part 40 Folding mountain (Fujiyama)
100 mask

Claims (8)

A mask body having a first surface and a second surface opposite to the first surface;
Connected to the mask body, and having a fixing part for fixing the mask body to the lower part of the face of the wearer,
A non-woven fabric composed of a plurality of layers is attached to each side end of the mask main body,
The total basis weight of the first surface side and the nonwoven fabric laminated on the second surface side of the side end portions, respectively 25 g / m ² or more 50 g / m ² or less is masked. The mask according to claim 1, wherein the basis weight of each layer of the nonwoven fabric is 10 g / m ² or more and 30 g / m ² or less.   The mask according to claim 1 or 2, wherein a nonwoven fabric composed of two layers is attached to each side end of the mask main body. Each of the side end portions has a welded portion for fixing the nonwoven fabric,
The mask according to any one of claims 1 to 3, wherein a total area of the welded portion is 5 mm ² or more and 100 mm ² or less.   The said mask main-body part has at least a 1st nonwoven fabric, a 2nd nonwoven fabric, and a shape maintenance layer between the said 1st nonwoven fabric and the said 2nd nonwoven fabric, The any one of Claims 1-4. The mask described in 1.   The mask according to claim 5, wherein the mask main body further has a fine particle block layer.   The said mask main-body part is a mask of any one of Claims 1-6 which has the crease | fold which can form a pleated solid shape.   The mask according to any one of claims 1 to 7, wherein an upper end portion of the mask main body portion includes a nose fit member that can be deformed so as to conform to a shape of a nose portion of the mask wearer.

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