JP7049116B2 - Disposable swimwear for the upper body - Google Patents

Description

The present invention relates to a disposable swimsuit for the upper body, which has an excellent fit on the shoulder.

Currently, disposable swimwear (also called swimming pants) that are intended for use in swimming pools for infants are on the market. This disposable swimsuit is for the lower body and is for preventing excrement such as urine and stool from diffusing into water (see, for example, Patent Documents 1 and 2).

On the other hand, a disposable swimsuit for the upper body that hides the chest has been proposed for girls in order to emphasize femininity (Patent Document 3).

However, in the case described in Patent Document 3, since the shoulder portion does not follow and deform along the body surface, there is room for improvement in the fit of the shoulder portion.

Japanese Unexamined Patent Publication No. 2005-296372 Japanese Unexamined Patent Publication No. 2005-537 Japanese Unexamined Patent Publication No. 2009-84735

Therefore, a main object of the present invention is to provide a disposable swimsuit for the upper body with improved fit of the shoulder portion.

The disposable swimwear for the upper body that solves the above problems is as follows.
<First aspect>
It has a front body that covers the front of the upper body and a back body that covers the back of the upper body.
It has a torso opening formed at the bottom, a neck opening formed at the top, a pair of shoulders located on both sides of the neck opening in the width direction, and a pair of arm openings that open laterally to the pair of shoulders.
A disposable swimsuit for the upper body
A gather elastic member along the front-rear direction is provided at least at the end of the shoulder on the neck opening side.
The shoulder portion contracts in the front-rear direction due to the contraction of the gather elastic member, and can be extended in the front-rear direction together with the gather elastic member.
Disposable swimwear for the upper body that features that.

(Action effect)
In this disposable swimsuit for the upper body, at least the end on the neck opening side of the shoulder is contracted in the front-rear direction due to the contraction of the gather elastic member, and can be extended in the front-rear direction together with the gather elastic member, so that it is very simple. Despite its simple structure, the fit of the shoulder is good. On the other hand, for example, when the gather elastic member is provided only at the end of the shoulder on the arm opening side, the fit of the shoulder is improved as compared with the conventional case, but the end of the shoulder on the arm opening side is improved. Because the anterior-posterior dimension of the shoulder is shortened due to shrinkage and there is no anterior-posterior elasticity of the end of the shoulder on the neck opening side, the end of the shoulder on the neck opening side is easily lifted from the skin, and the wearing feeling is comfortable. Not only is there a risk of deterioration, but the appearance will not be good.

<Second aspect>
An integrated exterior body that extends from the front body to the back body via a pair of shoulders, or an exterior body that is separately provided on the front body and the back body.
Side seals where both sides of the exterior body on the front body and both sides of the exterior body on the back body are joined, respectively.
An interior body attached to the inside of the exterior body, which extends from the front side of the shoulder portion to the rear side of the shoulder portion via the shoulder portion.
It is equipped with rising gathers that rise from both sides of the interior body.
The rising gathers are a root portion attached to the side portion of the back surface of the interior body, and a main body that is folded back from the root portion to the front side of the interior body and extends toward the center side in the width direction. A portion, a front lodging portion formed by fixing the front end portion of the main body portion in an inverted state, a rear lodging portion formed by fixing the rear end portion of the main body portion in an inverted state, and the said in the main body portion. It has a non-fixed rising portion located between the front lodging portion and the rear lodging portion, and the gather elastic member provided at least at the tip of the raised portion along the front-rear direction.
Disposable swimsuit for the upper body of the first aspect.

(Action effect)
When the gather elastic member is provided together with the rising gather as in this embodiment, the rising gather moves toward the neck opening side along the inclination of the upper surface of the shoulder (the inclination of the trapezius muscle), and accordingly, the root in the rising gather. The portion from the boundary between the portion and the main body portion to the edge of the neck opening (hereinafter, also referred to as a collar forming portion) is folded outward in the width direction to form a collar. Therefore, not only the fit of the shoulder part is good, but also the appearance is cute due to the formation of the collar when worn.

<Third aspect>
In the unfolded state, both edges of the neck opening are located on the center side in the width direction with respect to the tip of the rising gather.
A disposable swimsuit for the upper body of the second aspect.

(Action effect)
Having such a positional relationship between the neck opening and the rising gathers not only makes it easier to cut the neck opening during manufacturing, but also forms a large collar on the shoulder, resulting in a more cute appearance.

<Fourth aspect>
The rear end portion of the anterior lodging portion has a shape that is gradually or continuously located on the rear side toward the outside in the width direction.
The front end portion of the posterior lodging portion has a shape that is gradually or continuously located on the front side toward the outside in the width direction.
Disposable swimwear for the upper body according to the second or third aspect.

(Action effect)
It is preferable that the anterior lodging portion and the posterior lodging portion have such a shape because the front and rear end portions of the collar forming portion are more clearly folded outward in the width direction.

<Fifth aspect>
The front end of the neck opening is located at the same level as or in front of the rear end of the anterior lodging portion.
The posterior end of the neck opening is located at the same level as or posterior to the anterior end of the posterior lodging portion.
A disposable swimsuit for the upper body according to any one of the second to fourth aspects.

(Action effect)
It is preferable that the neck opening has such a positional relationship with respect to the anterior lodging portion and the posterior lodging portion because the collar forming portion is more likely to bend.

According to the present invention, there are advantages such as good fit of the shoulder portion.

It is a top view which shows the inner surface of the disposable swimsuit for the upper body in the unfolded state. It is a top view which shows the outer surface of the disposable swimsuit for the upper body in the unfolded state. FIG. 3 is a cross-sectional view taken along the line 3-3 of FIG. It is a cross-sectional view of 4-4 of FIG. (A) 5-5 cross-sectional view of FIG. 1, (b) 6-6 cross-sectional view of FIG. 1, (c) and 7-7 cross-sectional view of FIG. (A) A perspective view of a disposable swimsuit for the upper body, and (b) a perspective view of the disposable swimsuit for the upper body. It is a top view which shows the inner surface (elastic member omitted) of the disposable swimsuit for the upper body in the unfolded state. It is a top view which shows the inner surface (elastic member omitted) of the disposable swimsuit for the upper body in the unfolded state. It is a front view which shows roughly the disposable swimsuit for the upper body. It is a front view which shows roughly the disposable swimsuit for the upper body. It is a cross-sectional view corresponding to the 3-3 cross section of FIG. It is a cross-sectional view corresponding to the 4-4 cross section of FIG.

Hereinafter, the disposable swimwear for the upper body will be described in detail with reference to the attached drawings. 1 to 6 show disposable swimwear for the upper body. This disposable upper body swimsuit includes a front body F that covers the front part of the upper body and a back body B that covers the back part of the upper body, and has a torso opening WO formed at the lower part, a neck opening NO formed at the upper part, and a neck opening. It is provided with a pair of shoulder portions S located on both sides of the WD in the width direction and a pair of arm opening AOs opening to the sides of the pair of shoulder portions S.

Characteristically, as shown in FIG. 9, in addition to FIG. 6, a gather elastic member 63 along the front-rear direction LD is provided at least at the end of the shoulder portion S on the neck opening NO side. The shoulder portion S is contracted in the front-rear direction LD due to the contraction of the gather elastic member 63, and can be extended in the front-rear direction LD together with the gather elastic member 63. As a result, the disposable swimsuit for the upper body has a very simple structure, but the fit of the shoulder portion S is good. On the other hand, as shown in FIG. 10, for example, when the gather elastic member 63 is provided only at the end of the shoulder S on the arm opening AO side, the fit of the shoulder S is improved as compared with the conventional case. However, the shoulder portion S has a shorter anterior-posterior LD dimension at the end on the AO side of the arm opening in the shoulder portion S, and the shoulder portion has no anterior-posterior LD elasticity at the end on the NO side of the neck opening in the shoulder portion S. The end portion on the NO side of the neck opening in S tends to float from the skin, which not only may deteriorate the wearing feeling, but also the appearance is not good.

The structure of each part is not particularly limited. The illustrated example is preferable in that a technique for manufacturing a pants-type disposable diaper can be used. That is, the disposable swimsuit for the upper body of the illustrated example includes an exterior body 100 forming the outer surface (back surface) of the product and an interior body 200 attached to the exterior body 100. The reference numeral Y indicates the total length of the product in the unfolded state (the vertical length from the edge of the body opening WO of the front body F to the edge of the body opening WO of the rear body B), and the reference numeral X indicates the total width of the product in the unfolded state. Is shown.

Each component is joined to a member adjacent to at least one of the front and back sides as needed. The joining between the members can be performed by a hot melt adhesive applied to either or both members. The dotted pattern portion in the cross-sectional view shows a hot melt adhesive as a joining means for joining the constituent members located on the front side and the back side thereof. The hot melt adhesive can be applied by a known method such as slot coating, continuous linear or dotted bead coating, spiral or Z-shaped spray coating, or pattern coating (transfer of hot melt adhesive by letterpress method). Can be applied. Instead of or in conjunction with this, at the fixed portion of the elastic member, a hot melt adhesive can be applied to the outer peripheral surface of the elastic member to fix the elastic member to the adjacent member. Examples of the hot melt adhesive include EVA type, adhesive rubber type (elastomer type), olefin type, polyester / polyamide type and the like, but they can be used without particular limitation. As a joining means for joining each component, a means by welding a material such as a heat seal or an ultrasonic seal can also be used.

(Exterior body)
The exterior body 100 extends from the front body F to the back body B via a pair of shoulders S located on both sides of the WD in the width direction of the neck opening NO, and both sides and the back body of the exterior body 100 in these front body F. It has a side seal portion 13 to which both side portions of the exterior body 100 in B are joined to each other. Further, due to the formation of the side seal portion 13, as shown in FIG. 6, a body opening WO is formed in the lower part, a neck opening NO is formed in the center of the WD in the width direction of the upper part, and the side of the pair of shoulder portions S. A pair of arm openings AOs are formed.

The exterior body 100 has a waist circumference portion T determined as a front-back direction range from the body opening WO to the lower end of the arm opening AO, and a front-back direction range of a portion forming the arm opening AO (front and back having a side seal portion 13 of the front body F). It has an intermediate portion M defined as (between the directional region and the anteroposterior region having the side seal portion 13 of the back body B). The waist circumference T can be divided into a "body lower end" W that conceptually forms the edge of the body opening and a "chest" U that is a portion above this. Normally, when there is a boundary in the waist circumference T where the stretching stress in the width direction changes (for example, the thickness and elongation rate of the elastic member change), the body opening WO side is closer to the body than the boundary on the body opening WO side. The lower end portion W is formed, and if there is no such boundary, the portion extending toward the body opening WO side from the interior body 200 is the lower end portion W. The dimensions of these anteroposterior LDs vary depending on the size of the product and can be appropriately determined. For example, the lower end portion W of the trunk can be 15 to 40 mm and the chest U can be 65 to 120 mm.

Both side edges of the intermediate portion M in the exterior body 100 are constricted in a U-shape or a curved shape along the circumference of the wearer's arm. The degree of constriction of the exterior body 100 can be appropriately determined, and in order to obtain a neat appearance, the width of the exterior body 100 is preferably narrower than the width of the interior body 200 at the narrowest portion. Even a narrow portion may be wider than the width of the interior body 200.

Although not shown, the exterior body 100 is provided separately on the front body F and the rear body B, and these are separated from each other in the front-rear direction LD as necessary, and the front exterior body 100 and the rear exterior are provided via the interior body 200. The body 100 can also be connected.

The exterior body 100 can also be formed of a single sheet layer. However, in order to improve the fit, it is preferable to incorporate the elastic members 15 to 19 in the exterior body 100 as described later. In addition, it may be difficult to secure rigidity with a single layer, or the material of the inner surface and the material of the outer surface may be different. Therefore, as shown in FIGS. 1 to 5, the exterior body 100 preferably has a laminated structure in which the outer sheet layer 12S and the inner sheet layer 12H are bonded together. The sheet material forming the outer sheet layer 12S and the inner sheet layer 12H may be a common sheet material or may be an individual sheet material. That is, in the former case, in a part or all of the exterior body 100, the inner sheet layer 12H and the outer sheet layer 12S are formed by the inner part and the outer part of one sheet material folded back at the edge of the body opening WO or the like. Each is formed. The former form has an advantage that the number of materials of the sheet material is small, and the latter form has an advantage that the positions are less likely to shift when the inner sheet layer 12H and the outer sheet layer 12S are bonded together. The illustrated form corresponds to the latter, and the sheet material forming the inner sheet layer 12H extends only to the edge of the body opening WO, but the sheet material forming the outer sheet layer 12S is the inner sheet layer 12H. It wraps around the waist side edge of the sheet material and is folded back inside. Further, this folded portion is a cover sheet layer 12r extending over the entire widthwise WD of the exterior body 100 to a position overlapping the end portion of the interior body 200 on the body opening WO side. The cover sheet layer 12r may not be formed by folding back the sheet material of the outer sheet layer 12S, but a dedicated sheet material may be attached to the inside of the inner sheet layer 12H.

The sheet material used for the outer sheet layer 12S and the inner sheet layer 12H can be used without particular limitation as long as it is in the form of a sheet, but at least one of them is preferably a non-woven fabric. Here, the non-woven fabrics that can be used for the disposable swimwear for the upper body, including the outer sheet layer 12S and the inner sheet layer 12H, are as follows. That is, the constituent fibers of the non-woven fabric include olefin-based fibers such as polyethylene, polypropylene or a copolymer thereof (for example, polyethylene or a copolymer containing ethylene as a copolymerization component), polyester-based fibers, polyamide-based synthetic fibers (single component fibers). In addition to synthetic fibers such as core sheaths), recycled fibers such as rayon and cupra, natural fibers such as cotton, and the like can be selected without particular limitation, and these can be mixed and used. In order to increase the flexibility of the non-woven fabric, it is preferable that the constituent fibers are crimped fibers. Further, even if the constituent fibers of the non-woven fabric are hydrophilic fibers (including those made hydrophilic by a hydrophilic agent), hydrophobic fibers or water-repellent fibers (water-repellent fibers made water-repellent by a water-repellent agent) are used. Including). In addition, the non-woven fabric generally has a short fiber non-woven fabric, a long fiber non-woven fabric, a spunbond non-woven fabric, a melt blown non-woven fabric, a spunlace non-woven fabric, a thermal bond (air-through) non-woven fabric, and a needle punch depending on the fiber length, the sheet forming method, the fiber bonding method, and the laminated structure. It is classified into non-woven fabrics, point-bonded non-woven fabrics, laminated non-woven fabrics (SMS non-woven fabrics having a melt blown layer sandwiched between spunbond layers, SMMS non-woven fabrics, etc.), and any of these non-woven fabrics can be used.

When a non-woven fabric is used for the outer sheet layer 12S and the inner sheet layer 12H, the fineness, basis weight and thickness of the constituent fibers can be appropriately determined, but in the normal case, each is about 1.8 to 6.0 dtex, 10 to 30 g /. It is preferably about m ² and preferably about 0.1 to 1.3 mm.

It is preferable that the exterior body 100 is provided with elastic members 15 to 19 in an elongated shape between the sheet layers 12S and 12H in order to improve the fit to the waist circumference, and is expandable and contractible in the width direction and the like. As the elastic members 15 to 19, elongated ones (thread-like, string-like, strip-like, etc.) are used in the illustrated example, but net-like or sheet-like ones can also be used. Further, the elastic members 15 to 19 may use synthetic rubber or natural rubber. Hot melt adhesives by various coating methods can be used for bonding the two sheet layers 12S and 12H of the exterior body 100 and fixing the elastic members 15 to 19 sandwiched between them, as well as material welding (heat sealing or heat sealing). (Ultrasonic bonding) can also be used.

More specifically, the illustrated example will be described in more detail. A plurality of elastic members 17 at the lower end of the body are provided in a state of being extended along the width direction WD at a predetermined extension rate at intervals in the front-rear direction LD so as to be continuous over. Further, among the elastic members 17 at the lower end of the body, one or a plurality of elastic members 17 arranged in the region adjacent to the chest U may overlap with the interior body 200, or may overlap with the interior body 200 in the widthwise central portion. May be provided on both sides in the width direction except for. The elastic member 17 at the lower end of the body has a thickness of 155 to 1880 dtex, particularly about 310 to 1240 dtex (in the case of synthetic rubber, a cross-sectional area of 0.05 to 1.5 mm ² in the case of natural rubber, particularly 0.1 to 1). It is preferable to fix ³ to 22 rubber threads at intervals of 4 to 12 mm with an elongation rate of 150 to 400%, particularly 220 to 320%. Further, it is not necessary for all of the elastic members 17 at the lower end of the body to have the same thickness and elongation rate, and for example, the thickness and extension rate of the elastic members may be different between the upper part and the lower part of the lower end portion W of the body.

Further, between the outer surface of the inner sheet layer 12H and the inner side surface of the outer sheet layer 12S in the chest U of the front body F and the back body B, the upper side thereof and the inner surface thereof except the central portion in the width direction overlapping with the interior body 200 are formed. A plurality of chest elastic members 15 and 19 are extended along the width direction WD at a predetermined extension rate at intervals in the anterior-posterior direction LD so as to be continuous over the entire width direction at each site on both sides in the width direction. It is fixed in the state of being.

The chest elastic members 15 and 19 have a thickness of 155 to 1880 dtex, particularly about 310 to 1240 dtex (in the case of synthetic rubber, a cross-sectional area of 0.05 to 1.5 mm ² in the case of natural rubber, particularly 0.1 to 1. It is preferable to fix the rubber thread of 1 to 15 ^mm , particularly about 5 to 30 at intervals of 3 to 8 mm, with an elongation rate of 200 to 350%, particularly 240 to 300%, respectively.

Further, between the outer surface of the inner sheet layer 12H and the inner side surface of the outer sheet layer 12S in the intermediate portion M of the front body F and the rear body B, the width thereof is excluded except for the central portion in the width direction overlapping with the interior body 200. A plurality of intermediate elastic members 16 and 18 are extended along the width direction WD at a predetermined extension rate at intervals in the front-rear direction LD so as to be continuous in each part on both sides of the direction. It is fixed in the state of being.

The intermediate elastic members 16 and 18 have a thickness of 155 to 1880 dtex, particularly about 310 to 1240 dtex (in the case of synthetic rubber, a cross-sectional area of 0.05 to 1.5 mm ² in the case of natural rubber, particularly 0.1 to 1). It is preferable to fix the rubber threads of about 0.0 mm ² ) at intervals of 5 to 40 mm, particularly about 2 to 10 at intervals of 5 to 20 mm, with an elongation rate of 150 to 300%, particularly 180 to 260%, respectively.

As shown in the figure, the chest elastic members 15, 19 and the intermediate elastic members 16, 18 include a part or all of the portion overlapping the interior body 200 in the width direction WD (preferably with the interior body 200). If the interior body 200 is provided on both sides in the width direction except for the entire joint area with the exterior body 100), the interior body 200 does not shrink more than necessary in the width direction WD, and the appearance may be unpleasant. There is nothing to do. In this form, in addition to the form in which the elastic members exist only on both sides in the width direction, the elastic members exist from one side to the other side in the width direction across the interior body 200, but in the width direction overlapping with the interior body 200. In the central part, the elastic member is cut into small pieces at one place or many places, and the contraction force does not act (substantially equivalent to not providing the elastic member), and only both sides in the width direction act on the contraction force. The form configured as is also included. Of course, the arrangement of the chest elastic members 15 and 19 and the intermediate elastic members 16 and 18 is not limited to the above example, and the chest elastic members 15 and 19 and the chest elastic members 15 and 19 and the chest elastic members 15 and 19 so that the elastic force acts over the entire width direction of the chest U. Part or all of the intermediate elastic members 16 and 18 may be provided across the interior body 200 from one side to the other in the width direction.

(Side seal part)
The side seal portion 13 is a portion where the side portion of the front body F and the side portion of the rear body B are joined. This joining can be performed by welding a material such as a heat seal or an ultrasonic seal, or can be performed by a hot melt adhesive.

(Interior body)
The interior body 200 is a portion extending from the front side of the shoulder portion S to the rear side of the shoulder portion S via the shoulder portion S, and can take any shape. A neck opening NO is formed in the middle of the direction WD. The interior body 200 can also be formed of a single sheet layer. However, it is difficult to secure the rigidity with a single layer, and it is considered that it is difficult to attach the rising gather 60, which will be described later, or to the exterior body 100. Therefore, as shown in FIGS. 3 to 5, the interior body 200 preferably has a laminated structure including a top sheet 30 on the body side and a back sheet 11 on the exterior body 100 side. Various non-woven fabrics can be preferably used as the top sheet 30 and the back sheet 11. Further, as in the examples shown in FIGS. 3 to 5, at least one of the top sheet 30 and the back sheet 11 may be folded back to improve the rigidity of the side portions. Further, as shown in the examples shown in FIGS. 11 and 12, another reinforcing sheet 40 may be incorporated between the top sheet 30 and the back sheet 11 to improve the rigidity of the interior body 200 as a whole. As shown in the illustrated example, the reinforcing sheet 40 can be incorporated in a state of being folded in a plurality of times, such as by folding it in half. The reinforcing sheet 40 is, for example, a non-woven fabric having a rigidity of 0.5 to 10 mN · cm by the cantilever method specified in JIS L1913 (for example, a fineness of 1.8 to 6.0 dtex and an air through having a grain size of about 5 to 40 g / m ² ). Non-woven fabric (thermal bonded non-woven fabric), spun-bonded non-woven fabric, laminated non-woven fabric having a melt blown non-woven fabric layer sandwiched between spun-bonded non-woven fabric layers such as SMMS non-woven fabric, etc.) can be used.

The dimensions of the interior body 200 are not particularly limited. Normally, the width direction dimension 200X of the interior body 200 can be about 30 to 50% of the total width X of the product, and the front-rear direction dimension 200Y of the interior body 200 can be about 50 to 100% of the total length Y of the product. can. The position of the front-rear LD of the interior body 200 is not particularly limited, and may be arranged in the center of the front-rear LD of the product or may be biased toward the front side or the rear side of the product.

(Get up gather)
As shown in the illustrated example, rising gathers 60 are provided on both sides of the interior body 200, and the gathered elastic members 63 are provided on the rising gathers 60, which is one preferable form. That is, in this rising gather 60, a strip-shaped gather sheet 62 having a length equal to the LD length in the front-rear direction of the interior body 200 is folded back in the width direction WD and folded in two, and between the folded portion and the sheets in the vicinity thereof. In addition, a plurality of elongated gather elastic members 63 are fixed in an elongated state along the longitudinal direction at intervals in the width direction WD. The base end portion (the end portion opposite to the seat folded portion in the width direction WD) located on the opposite side of the rising gather 60 is the root portion 65 fixed to the back surface of the side edge portion of the interior body 200. ing. The portion other than the root portion 65 becomes the main body portion 66 (the portion on the folded portion side) that is folded back from the root portion 65 to the front side of the interior body 200 on the side of the interior body 200 and extends toward the center side of the WD in the width direction. There is. The front end portion of the main body portion 66 is in an inverted state and becomes a front inverted portion 67 formed by being fixed to the side surface of the top sheet 30 with a hot melt adhesive or a heat seal, and the rear end portion of the main body portion 66 is in an inverted state. It is a post-inverted portion 67 formed by being fixed to the side surface of the top sheet 30 with a hot melt adhesive or a heat seal. The portion of the main body portion 66 located between the anterior lodging portion 67 and the posterior lodging portion 67 is a non-fixed raised portion 68, and at least the tip portion of the raised portion 68 is gathered along the front-rear direction LD. The elastic member 63 is fixed in an extended state.

In this case, as shown in FIG. 9 as well as FIG. 6, since the gather elastic member 63 of the rising gather 60 is located at least at the end of the shoulder portion S on the neck opening NO side, the rising gather 60 is the upper surface of the shoulder portion S. Moves to the neck opening NO side along the inclination of the mitral muscle (inclination of the trapezius muscle), and accordingly, the collar forming portion 70 (as shown in FIG. 3, the root portion 65 and the main body portion 66 in the rising gather 60) The portion from the boundary to the edge of the neck opening NO) is folded outward in the width direction WD to form a collar. Therefore, not only the fit of the shoulder portion S is good, but also the appearance is cute due to the formation of the collar when worn.

Further, the shapes of the front lodging portion 67 and the back lodging portion 67 are not particularly limited, but as in the examples shown in FIGS. 7 and 8, the rear end portion of the front lodging portion 67 is located outside the WD in the width direction. The front end portion of the posterior lodging portion 67 has a shape that is gradually or continuously located on the rear side toward the outside of the WD in the width direction, and has a shape that is gradually or continuously located on the front side toward the outside of the WD in the width direction. This is preferable because the front and rear ends of the collar forming portion 70 can be folded more cleanly to the outside of the WD in the width direction.

The gather sheet 62 is a flexible, uniform and concealing non-woven fabric such as spunbonded non-woven fabric (SS, SSS, etc.), SMS non-woven fabric (SMS, SMSMS, etc.), melt-blown non-woven fabric, etc., and water-repellent with silicone or the like, if necessary. The treated material can be preferably used, and in this case, the texture of the nonwoven fabric can be about 10 to 30 g / m ² . As the gather elastic member 63, an elongated elastic member such as a rubber thread having a thickness of about 470 to 1240 dtex, more preferably about 620 to 940 dtex can be used. The elongation rate of the gather elastic member 63 is preferably 150 to 350%, more preferably 200 to 300%.

The number of gather elastic members 63 provided in the rising portion 68 of the rising gather 60 is preferably 2 to 6, and more preferably 3 to 5. The arrangement interval 60d of the gather elastic member 63 is appropriately 3 to 10 mm. The gather elastic member 63 can be arranged not only on the tip side of the raised portion 68 but also on the base side.

The attachment target of the root portion 65 of the rising gather 60 is not particularly limited, and for example, it can be attached to at least one of the top sheet 30 and the back sheet 11 in the interior body 200 by a hot melt adhesive or a heat seal.

The dimensions of the rising gather 60 can be appropriately determined. In a normal case, for example, as shown in FIG. 3, the standing height (length in the width direction of the main body portion 66 in the deployed state) W6 of the rising gather 60 is preferably 15 to 60 mm, particularly preferably 20 to 40 mm. Further, the separation distance W3 between the innermost folds when the rising gather 60 is folded flat so as to be parallel to the surface of the top sheet 30 is preferably 60 to 190 mm, particularly preferably 70 to 140 mm.

As in the examples shown in FIGS. 11 and 12, a gather elastic member 63 along the front-rear direction LD can be incorporated between the sheets at the end of the interior body 200 on the neck opening NO side. In this case, the rising gather 60 can be omitted. Further, the interior body 200 in the illustrated example may be omitted, and the gather elastic member 63 along the front-rear direction LD may be simply attached to the exterior body 100.

(Neck opening)
The neck opening NO can be formed by attaching the interior body 200 to the exterior body 100 and then punching it with a hole cutter. Further, the exterior body 100 and the interior body 200 may be individually formed with openings constituting the neck opening NO, and the interior body 200 may be attached to the exterior body 100 so that the openings of both are overlapped with each other. In the latter case, the opening of the exterior body 100 and the opening of the interior body 200 may have different dimensions and shapes, and in that case, the overlapping portion of both openings becomes the neck opening NO of the upper body disposable swimsuit.

The shape of the neck opening NO is not particularly limited, the long side is a rectangle along the anteroposterior LD, the long side is a rounded rectangle along the anteroposterior LD, the long axis is an ellipse along the anteroposterior LD, and the diagonal is long. The shape can be an appropriate shape such as a rhombus along the LD in the front-rear direction. In addition, the shape of the neck opening NO can be symmetrical in the anteroposterior direction or asymmetrical in the anteroposterior direction.

The positional relationship between the neck opening NO and the rising gather 60 is not particularly limited, but as shown in the illustrated example, both side edges of the neck opening NO are on the WD center side in the width direction from the tip of the rising gather 60 in the deployed state. If it is located, not only is it easy to cut the neck opening NO at the time of manufacture, but also a large collar is formed on the shoulder S, which makes it look more cute.

Further, as shown in the illustrated example, the front end of the neck opening NO is located at the same level as or in front of the rear end of the anterior lodging portion 67, and the posterior end of the neck opening NO is the front end of the posterior lodging portion 67. It is preferable that the collar forming portion 70 is located at the same level or behind it because the collar forming portion 70 is more likely to bend. Further, since the portion other than the shoulder portion S (particularly, in the illustrated example, the portion that contracts in the width direction WD due to the elastic members 15 to 19) does not contract in the front-rear direction LD, the appearance is good. However, the front end of the neck opening NO may be located posterior to the rear end of the anterior lodging portion 67, or the posterior end of the neck opening NO may be located anterior to the front end of the posterior lodging portion 67. , Or both.

The specific dimensions of the neck opening NO may be determined as appropriate. Normally, the width direction dimension Xn of the neck opening NO can be about 0 to 40% of the total width X of the product, and the front-back dimension Yn of the neck opening NO can be about 30 to 75% of the total length Y of the product. can. The case where the width direction dimension Xn of the neck opening NO is 0% of the total width X of the product means that the neck opening NO does not have a width in the expanded state like a slit. If the width direction dimension Xn of the neck opening NO is larger than 0% of the total width X of the product, the neck opening NO has a width even in the unfolded state. The widthwise dimension Xn of the neck opening NO is preferably larger than 10% of the total width X of the product, and more preferably larger than 20%. The position of the anterior-posterior LD of the neck opening NO is not particularly limited, and may be arranged in the center of the anteroposterior LD of the product or may be biased toward the front side or the rear side of the product.

<Explanation of terms in the specification>
The following terms in the specification have the following meanings unless otherwise specified in the specification.

-The "front-back (vertical) direction" means the direction connecting the ventral side (front side) and the dorsal side (rear side), and the "width direction" means the direction orthogonal to the front-back direction (horizontal direction).

・ "Front side" means the one closer to the wearer's skin when wearing the upper body disposable swimsuit, and "back side" means the one farther from the wearer's skin when wearing the upper body disposable swimsuit. ..

-The "front side" means the surface of the member that is closer to the wearer's skin when wearing the upper body disposable swimsuit, and the "back side" is from the wearer's skin when wearing the upper body disposable swimsuit. It means the far side.

-"Elongation rate" means a value when the natural length is 100%.

・ "Metsuke" is measured as follows. After pre-drying the sample or test piece, leave it in a test room or device in a standard state (test location: temperature 23 ± 1 ° C., relative humidity 50 ± 2%) to bring it to a constant weight. Pre-drying refers to constant weight of a sample or test piece in an environment with a temperature of 100 ° C. For fibers with an official moisture content of 0.0%, pre-drying does not have to be performed. From the test piece in a constant weight state, a sample having a size of 100 mm × 100 mm is cut out using a sampling template (100 mm × 100 mm). The weight of the sample is measured and multiplied by 100 to calculate the weight per square meter, which is used as a basis weight.

-The "thickness" is automatically measured using an automatic thickness measuring device (KES-G5 handy compression measurement program) under the conditions of a load of 0.098 N / cm ² and a pressurized area of 2 cm ² .

-"Unfolded state" means a state in which the unfolded state is flat without shrinkage or slack.

-Unless otherwise specified, the dimensions of each part mean the dimensions in the unfolded state, not in the natural length state.

-If there is no description of the environmental conditions in the test or measurement, the test or measurement shall be performed in a test room or device under standard conditions (test location: temperature 23 ± 1 ° C, relative humidity 50 ± 2%). do.

The present invention can be used for upper body disposable swimwear.

100 ... Exterior body, 11 ... Back sheet, 12H ... Inner sheet layer, 12S ... Outer sheet layer, 12r ... Folded part, 13 ... Side seal part, 200 ... Interior body, 30 ... Top sheet, 40 ... Reinforcing sheet, 60 ... Rising gather, 62 ... Gather sheet, 63 ... Gather elastic member, 65 ... Root part, 66 ... Main body part, 67 ... Front lodging part, Rear lodging part, 68 ... Rising part, AO ... Arm opening, B ... Back body, F ... front body, LD ... front-back direction, M ... middle part, NO ... neck opening, S ... shoulder, W ... lower end of body, WD ... width direction, WO ... body opening, 70 ... collar forming part.

Claims (4)

It has a front body that covers the front of the upper body and a back body that covers the back of the upper body.
It has a torso opening formed at the bottom, a neck opening formed at the top, a pair of shoulders located on both sides of the neck opening in the width direction, and a pair of arm openings that open laterally to the pair of shoulders.
A gather elastic member along the front-rear direction is provided at least at the end of the shoulder on the neck opening side.
The shoulder portion contracts in the front-rear direction due to the contraction of the gather elastic member, and can be extended in the front-rear direction together with the gather elastic member.
A disposable swimsuit for the upper body
An integrated exterior body that extends from the front body to the back body via a pair of shoulders, or an exterior body that is separately provided on the front body and the back body.
Side seals where both sides of the exterior body on the front body and both sides of the exterior body on the back body are joined, respectively.
An interior body attached to the inside of the exterior body, which extends from the front side of the shoulder portion to the rear side of the shoulder portion via the shoulder portion.
It is equipped with rising gathers that rise from both sides of the interior body.
The rising gathers are a root portion attached to the side portion of the back surface of the interior body, and a main body that is folded back from the root portion to the front side of the interior body and extends toward the center side in the width direction. A portion, a front lodging portion formed by fixing the front end portion of the main body portion in an inverted state, a rear lodging portion formed by fixing the rear end portion of the main body portion in an inverted state, and the said in the main body portion. It has a non-fixed rising portion located between the front lodging portion and the rear lodging portion, and the gather elastic member provided at least at the tip of the raised portion along the front-rear direction.
Disposable swimwear for the upper body that features that. In the unfolded state, both edges of the neck opening are located on the center side in the width direction with respect to the tip of the rising gather.
Disposable swimsuit for the upper body according to claim 1 . The rear end portion of the anterior lodging portion has a shape that is gradually or continuously located on the rear side toward the outside in the width direction.
The front end portion of the posterior lodging portion has a shape that is gradually or continuously located on the front side toward the outside in the width direction.
Disposable swimsuit for the upper body according to claim 1 or 2 . The front end of the neck opening is located at the same level as or in front of the rear end of the anterior lodging portion.
The posterior end of the neck opening is located at the same level as or posterior to the anterior end of the posterior lodging portion.
The disposable swimsuit for the upper body according to any one of claims 1 to 3 .

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