JP5064332B2 - Tape type disposable diaper - Google Patents

Description

  The present invention relates to a tape-type disposable diaper. More specifically, the present invention relates to a tape-type disposable diaper in which the portion of the hook material is easily understood from the back surface of the fastening tape.

  In general, a tape-type disposable diaper is arranged so as to cover an absorbent body and the surface of the absorbent body, for example, like a tape-type disposable diaper 1 shown in FIG. 5, and at least a top made of a liquid-permeable material. The sheet 18 is disposed so as to cover the back surface of the absorbent body, and includes a back sheet 20 made of a liquid-impermeable material, and includes the front body 2, the crotch 4, and the back body 6. It is arranged so as to extend from the left and right side edges 6a, 6b of the back body 6, and further includes a fastening tape 10 for fixing the front body 2 and the back body 6 (for example, Patent Document 1 and 2).

  According to such a tape-type disposable diaper 1, the excrement of the wearer passes through the liquid-permeable portion of the top sheet 18 and is absorbed by the absorbent body, and is usually made of a liquid-impermeable material. The back sheet 20 prevents leakage to the outside, and excrement can be held inside the diaper. Further, by fixing the front body 2 and the back body 6 of the diaper to each other with the fastening tape 10, there is also an advantage that the wearer can easily put on the diaper.

  By the way, conventionally, as a fastening system for a tape-type disposable diaper, an adhesive fastener that is fixed by the adhesive force of an adhesive has been widely used. However, in recent years, a machine of a convex member (hook material) and a concave material (loop material). Transition to mechanical fasteners (also referred to as planar fasteners) that are fixed by mechanical coupling is progressing. As shown in FIG. 5, such a fastening tape is formed by attaching the hook material 44 of the above-described mechanical fastener to the surface of the base material 48.

  Depending on when and where such a diaper is worn, it is not always possible to ensure sufficient brightness, and it may be difficult to visually recognize the fastening tape. In preparation for such a case, a technique for performing dark place visual recognition processing on the fastening tape (Patent Document 1) and a technique for coloring the fastening tape (Patent Document 2) have been proposed.

JP 2003-290286 A JP 2007-143870 A

  However, the above-described technique has a problem that the color may be lost due to rubbing of the fastening tape.

  The present invention has been made to solve such problems of the prior art, and is a tape-type disposable diaper whose tape position is easy to understand when changing diapers. The present invention provides a tape-type disposable diaper that can hold a bag.

  As a result of intensive studies to solve the problems of the prior art as described above, the inventor adopts a colored hook material, while forming a transparent or translucent region on the base material of the fastening tape, The present invention has been completed by conceiving that the above-mentioned problems can be solved by forming the colored hook material so as to be visible through this region. Specifically, the following fastening tape and a tape-type disposable diaper are provided by the present invention.

[1] A top sheet composed of a front body, a crotch part, and a back body, arranged so as to cover an upper surface of the absorber, and at least a part made of a liquid-permeable material; A back sheet made of a liquid-impermeable material, disposed so as to cover the lower surface of the absorber, and the rear body and the front body disposed at least one each on the left and right side edges of the rear body. A tape-type disposable diaper comprising: a fastening tape to be fixed; and a fastening region formed on the front body for fastening the fastening tape, wherein the fastening tape comprises a base portion and a plurality of And the base material portion is a white sheet, the hook material is colored, and the portion of the base material portion where the hook material is disposed has a total light beam. Transparent or translucent area with a transmittance of 40% or more A tape-type disposable diaper in which a region is formed and at least a part of the back surface of the hook member is visible from the transparent or translucent region of the base member .

[2] The tape-type disposable diaper according to the above [1], wherein the base material portion is a thermoplastic resin nonwoven fabric, and a transparent or translucent region is formed by melting by hot embossing.

[3] The base material part is a microporous film or non-woven fabric or a laminated sheet obtained by laminating two or more layers, and the transparency can be lowered by penetrating the base material part through a transparent or translucent region. The tape-type disposable diaper according to the above [1], which is formed by applying a transparent material.

[4] The above-mentioned transparent substance is a hot melt and has (A) a styrene-block copolymer or a hydrogenated product thereof, (B) a tackifier resin, and (C) a plasticizer as main components. The tape-type disposable diaper according to [3].

[5] The tape-type disposable diaper according to any one of [1] to [4], wherein the shape of the transparent or translucent region formed on the base material portion is different on the left and right.

[6] The tape-type disposable diaper according to any one of the above [1] to [5], wherein the shape of the transparent or translucent region formed on the base portion is an ideographic shape.

  In the present invention, the fastening tape is composed of a base material portion and a hook material having a plurality of projections, the base material portion is a white thermoplastic resin nonwoven fabric, and the hook material is colored. In addition, since a transparent or semi-transparent region is formed in a portion where the hook material of the base material portion is disposed, at least a part of the back surface of the hook material is the transparent or semi-transparent of the base material It is visible from the area. Therefore, the tape position is easy to understand when changing diapers. In addition, a transparent or semi-transparent area is formed on the fastening tape to make the colored hook material visible. Unlike the case where printing is performed on the surface of the fastening tape where the hook material is not disposed, rubbing, etc. The color will not fade. Furthermore, since the presence or absence of the hook material can be confirmed directly from the transparent or translucent region, it can be seen at a glance when the hook material is dropped due to an accident or the like.

  Hereinafter, the best mode for carrying out the tape-type disposable diaper of the present invention will be specifically described. However, the present invention broadly encompasses tape-type disposable diapers having the invention-specific matters, and is not limited to the following embodiments.

  In the present specification, the “hook material” is a convex member of a mechanical fastener (also referred to as a planar fastener) and can be fixed by mechanical coupling with a loop material that is a concave material. It is. This hook material is attached to the surface of the base material. As the “hook material”, for example, a material having a large number of protrusions (such as a bowl shape, a mushroom shape, a bowl shape) formed on the surface thereof is used.

  “Base material” means that a hook material is attached near one end portion, and the other end portion is fixed to the left and right side edges of the back body of the disposable diaper, for example. It functions as.

  The “tape-type disposable diaper” means, as in the tape-type disposable diaper 1 shown in FIG. 5, the absorbent body 22, the top sheet 18 at least partially made of a liquid-permeable material, and a bag made of a liquid-impermeable material. The front body 2, the crotch part 4, and the back body 6 are configured to extend from the left and right side edges 6 a and 6 b of the back body 6. The disposable diaper further provided with the fastening tape 10 for fixing to the front body 2 shall be meant.

  In addition, in this specification, “front body” means a part that covers the abdomen (front of the body) of the wearer when a diaper is worn on the wearer, and “inseam” means that the wearer wears a diaper. When the wearer wears a diaper, the part covering the inseam of the wearer means the part covering the back side (back of the body) of the wearer.

  The tape-type disposable diaper of the present invention is composed of each part of a front body, a crotch part and a back body, and is arranged so as to cover the upper surface of the absorbent body and the absorbent body, and at least a part thereof is made of a liquid-permeable material. A top sheet, a back sheet made of a liquid-impermeable material, disposed so as to cover the lower surface of the absorber, and the back body arranged at least one on each of the left and right side edges of the back body A tape-type disposable diaper comprising: a fastening tape that secures the front body; and a fastening region that is formed on the front body and that fastens the fastening tape. It is comprised from the base material part and the hook material which has a some projection part, The said base material part is a white sheet | seat, The said hook material is colored, The said hook material of the said base material part is arrange | positioned The part is transparent or translucent A tape type disposable diaper which region is formed.

  FIG. 5 is a schematic plan view of a tape-type disposable diaper according to an embodiment of the present invention. FIG. 2 is a schematic plan view showing a state in which the one-dot chain line portion of FIG. 5 is enlarged and the fastening tape 10 is folded inside the diaper (the side in contact with the wearer's body). Further, FIG. 1 is a schematic cross-sectional view showing the A-A ′ cross section of FIG. 2.

[1] Fastening tape:
The fastening tape of the present invention is used for fixing the front body 2 and the back body 6 of a diaper, like a fastening tape 10 shown in FIG. And a hook material 44 of a mechanical fastener attached to the head.

  In the tape-type disposable diaper 1 shown in FIG. 5, a hook material 44 of a mechanical fastener is attached to the base material 48 of the fastening tape 10. On the other hand, the front body 12 is provided with a front patch 12 made of a loop material 52 of a mechanical fastener, and is configured so that the hook material 44 can be fixed.

  With such a configuration, the back body 6 of the diaper can be fixed to the front body 2, and the diaper can be worn by the wearer.

  In addition, as a raw material of such a hook material, for example, synthetic fibers made of polyolefin (polyethylene, polypropylene, etc.), polyester, aliphatic polyamide (so-called nylon), and other thermoplastic resins can be used. In particular, polyethylene and polypropylene can be preferably used. In the present invention, a colored hook material is used. Here, colored means something other than white.

  The “base material” functions as a main body of the fastening tape 10 by attaching a hook material and fixing the fastening tape 10 to the left and right side edges 6 a and 6 b of the back body 6. In the present invention, a white base material is employed.

  As the material of the base material, sheet materials made of various nonwoven fabrics such as spunbond, SMS (spunbond / meltblown / spunbond), SMMS (spunbond / meltblown / meltblown / spunbond), card embossing, resin bond, etc. are used. be able to. In view of strength, it is preferable to use a sheet material made of a spunbonded nonwoven fabric.

  Examples of the constituent material of the nonwoven fabric include synthetic fibers made of polyolefin (polyethylene, polypropylene, etc.), polyester, aliphatic polyamide (so-called nylon), and other thermoplastic resins. In this case, the synthetic fiber may be a single fiber or a composite fiber having a core-sheath structure or the like. In general, when a single fiber is used, polyolefin is often used, but it is also preferable to use polyester in consideration of strength.

  Moreover, the laminated body which laminated | stacked the some nonwoven fabric and film can also be used as a raw material of a base material.

  In the present invention, before fixing the hook material to the base material, when fixing the hook material to the base material, or after fixing the hook material to the base material, it is A translucent region is formed. As shown in FIGS. 1 and 2, a transparent or translucent region is formed in a portion of the base material 48 corresponding to the hook material 44. The fastening tape 10 thus formed is joined to the side sheet 19.

  In the present invention, the total light transmittance of the transparent or translucent region is preferably 40% or more. When the total light transmittance is less than 40%, the color visibility of the hook material tends to be insufficient. Here, the total light transmittance means a value measured according to JIS K 7361-1 (Plastic—Test method for total light transmittance of transparent material—Part 1: Single beam method). Further, the larger the numerical value of the total light transmittance, the higher the transparency.

  As a method for forming a transparent or translucent region, it is not possible to melt the thermoplastic nonwoven fabric of the base material by hot embossing, or to penetrate into a microporous film or a nonwoven fabric or a laminated sheet in which two or more layers are laminated. The method of apply | coating the transparent substance which can reduce transparency is mentioned.

  As a method of hot embossing, a conventionally known method can be adopted. For example, it can be formed by thermocompression bonding using a pattern roll having a predetermined shape.

  As the transparent substance, hot melt is preferably used. This hot melt is mainly composed of 5 to 90% by mass of a styrene-block copolymer or a hydrogenated derivative thereof, 5 to 90% by mass of a tackifier resin, and further 5 to 50% by mass of a plasticizer. As necessary, for the components of the copolymer, ethylene-based copolymers such as ethylene-vinyl acetate copolymer, propylene-based copolymers such as polypropylene-polyethylene-butene 1 copolymer, fillers (titanium oxide, calcium carbonate, etc.) , Waxes, pigments, antioxidants, ultraviolet absorbers and the like can be blended. Examples of the tackifier include conventionally known ones such as petroleum resins, hydrogenated petroleum resins, rosin resins, hydrogenated rosin resins, terpene resins, hydrogenated terpene resins, coumarone / indene resins, and styrene resins. Resin or the like is used. Furthermore, conventionally known plasticizers such as paraffinic oil, naphthenic oil, and aroma oil are also used.

  In the present invention, the shape of the transparent or translucent region may be different between the left and right fastening tapes. In this case, since confirmation of the right and left of a tape type disposable diaper becomes easy, it is preferable.

  In the present invention, the shape of the transparent or translucent region may be an ideographic shape. Here, the ideographic shape is a meaningful shape such as a star, an animal silhouette, an alphabet, or a number. By adopting such a shape, when employed in a tape-type disposable diaper for infants, it contributes to education for infants.

  3 and 4 are schematic enlarged plan views of a fastening tape of a tape-type disposable diaper according to an embodiment of the present invention. FIG. 3 shows the shape of a transparent or semi-transparent region (embossed portion 54a) formed by embossing as a bear silhouette, and FIG. 4 shows a transparent or semi-transparent region formed by embossing. The shape of the transparent region (embossed portion 54b) is a heart shape.

[2] Tape-type disposable diapers:
The tape-type disposable diaper of the present invention includes the above-described fastening tape as the fastening tape. More specifically, the absorber is disposed so as to cover the surface of the absorber, and is disposed so as to cover at least a part of the liquid-permeable material and the back surface of the absorber. A back sheet made of a permeable material, and composed of a front body, a crotch part, and a back body, and arranged so as to extend from the left and right side edges of the back body. Is a tape-type disposable diaper that is the above-described fastening tape.

[2-1] Fastening tape:
If the tape-type disposable diaper of this invention is provided with the fastening tape already demonstrated as the fastening tape, there will be no restriction | limiting about another structure. However, it is preferable that at least one fastening tape is disposed on each of the left and right side edges of the back body.

  For example, in the tape-type disposable diaper 1 shown in FIG. 5, one fastening tape 10 is arranged on each of the left and right side edges 6 a and 6 b of the back body 6.

  Examples of the method for joining the fastening tape to the diaper body include joining with a hot melt adhesive and joining by fusion. For example, the tape-type disposable diaper 1 shown in FIG. 5 is made of hot melt adhesive on the side edges 6a and 6b of the back body 6 of the diaper body, more specifically on both side edges of the side flap formed by the side sheet 19. This is an example in which the fastening tape 10 is joined.

[2-2] Absorber:
The absorber is a member for absorbing and holding the wearer's urine. The absorber is made of an absorbent material because it needs to absorb and retain the wearer's urine and body fluid.

  Examples of the absorbent material constituting the absorber include conventionally known absorbent materials usually used for disposable diapers and other absorbent articles, such as fluff pulp, super absorbent polymer (Super Absorbent Polymer; hereinafter referred to as “SAP”). And a hydrophilic sheet. It is possible to use wood pulp or non-wood pulp defibrated as fluff pulp, sodium polyacrylate as SAP, tissue, absorbent paper, hydrophilized nonwoven fabric as hydrophilic sheet preferable.

  These absorbent materials are usually used as a single-layer or multi-layer mat. Under the present circumstances, 1 type may be used independently among the said absorptive materials, and 2 or more types may be used together. Especially, what used together about 10-500 mass parts SAP with respect to 100 mass parts of fluff pulp is preferable. At this time, the SAP may be uniformly mixed in each mat of fluff pulp, or may be arranged in layers between the layers of the multilayer fluff pulp.

  It is preferable that the absorber is interposed at least in part between the top sheet and the back sheet. Usually, the absorber is interposed between the top sheet and the back sheet by being sandwiched between the top sheet and the back sheet and sealing the peripheral edge thereof. Therefore, the flap part in which the absorber is not interposed is formed between the top sheet and the back sheet at the peripheral part of the absorber. The absorber is interposed in at least a part between the top sheet and the back sheet. More specifically, the absorbent body may be interposed at least in the crotch region, and the absorbent body may extend to the front body and the back body.

  It is preferable that the absorber is entirely wrapped with a hydrophilic sheet. Such a configuration has an advantage that SAP can be prevented from leaking from the absorber and shape stability can be imparted to the absorber.

  Although there is no restriction | limiting in particular about the shape of an absorber, The shape used in the conventional disposable diaper and other absorbent articles, for example, a rectangular shape, an hourglass type, a gourd type, a T shape etc. can be mentioned. The tape-type disposable diaper 1 shown in FIG. 5 is an example in which a rectangular absorbent body is used as the absorbent body 22.

  In addition, a sheet (second sheet) for diffusing liquid such as urine and body fluid may be incidentally disposed on the surface side of the absorber (for example, between the absorber and the top sheet). . When this second sheet is attached, due to the wearer's posture, etc., even when the space on the back side of the top sheet is not sufficiently formed, the absorption rate of urine, body fluid, etc. is difficult to decrease, and the absorption rate decreases. It is possible to prevent leakage of urine and body fluids.

  Examples of the material constituting the second sheet include hydrophilic and liquid-permeable materials such as woven fabric, non-woven fabric, porous plastic, and fluff pulp. Examples of these constituent materials include polypropylene, polyethylene, polyester, rayon, pulp, and composite fibers thereof. As the pulp, crimped fibers such as curly cellulose fibers can be suitably used.

[2-3] Top sheet:
A top sheet is a sheet | seat arrange | positioned so that the surface (surface located in a wearer's skin side at the time of mounting | wearing of a diaper) may be coat | covered. At least a part (all or a part) of the top sheet is made of a liquid-permeable material because the absorber disposed on the back side of the top sheet needs to absorb the wearer's urine. Usually, at least near the surface of the absorber, it is made of a liquid-permeable material that can permeate the wearer's urine and body fluid. As long as at least a part is made of the liquid permeable material, the entire top sheet is not necessarily made of the liquid permeable material.

  Examples of the liquid permeable material constituting the top sheet include a woven fabric, a nonwoven fabric, and a porous film. Among these, it is preferable to use a non-woven fabric made of a thermoplastic resin such as polypropylene, polyethylene, polyester, or nylon and subjected to a hydrophilic treatment. There is no restriction | limiting in particular also about the kind of nonwoven fabric, The conventionally well-known nonwoven fabric manufactured by various manufacturing methods, such as air through (card hot air), card | curd embossing, and a spun bond, can be used suitably.

  The top sheet may be composed of a single sheet material, but may be composed of a plurality of sheet materials. For example, the form which comprises the top sheet arrange | positioned at the surface part of an absorber and the top sheet arrange | positioned in the part of a side flap by a different sheet | seat is also utilized frequently. The tape-type disposable diaper 1 shown in FIG. 5 has a top sheet 18 (center sheet) made of a liquid permeable material at the center of the diaper, and the side flap portion of the diaper has resistance to liquid permeation. It is the example which has arrange | positioned the side sheet | seat 19 which consists of a ventilation water-repellent material shown.

[2-4] Back sheet:
A backsheet is a sheet | seat arrange | positioned so that the back surface (surface located in a wearer's clothing side at the time of mounting | wearing of a diaper) may be coat | covered. The back sheet is made of a liquid-impermeable material because it is necessary to prevent the wearer's urine from leaking outside the diaper.

  Although there is no restriction | limiting in particular about the arrangement | positioning method, For example, the structure which arrange | positions the back seat | sheet 20 so that it may correspond with the external shape of a diaper like the tape-type disposable diaper 1 shown in FIG. However, it is not always necessary to adopt such a configuration. From the viewpoint of preventing leakage of urine absorbed by the absorber, a back sheet made of a liquid-impermeable material is disposed at least in a portion where the absorber is present. May be.

  Examples of the liquid-impermeable material constituting the backsheet include a liquid-impermeable film made of a resin such as polyethylene. Among these, a microporous polyethylene film is preferably used. This microporous polyethylene film has a large number of fine pores of 0.1 to several μm, and is liquid impervious but has moisture permeability, so that the inside of the diaper can be prevented from being steamed There is.

  Note that a sheet material (cover sheet) may be bonded to the outer surface of the back sheet. This cover sheet is used to reinforce the back sheet and improve the feel (tactile feeling) of the back sheet.

  Examples of the material constituting the cover sheet include woven fabric and non-woven fabric. Especially, it is preferable to use the dry nonwoven fabric and wet nonwoven fabric which consist of thermoplastic resins, such as polyethylene, a polypropylene, and polyester.

[2-5] Solid gather:
In order to prevent the side leakage of the urine excreted by the wearer, a three-dimensional gather may be provided. The three-dimensional gather is a member for preventing side leakage of the urine excreted by the wearer, and is a leak-proof wall configured to stand up three-dimensionally. By forming such a three-dimensional gather, the three-dimensional gather serves as a breakwater, and leakage from a leg-diameter opening or the like (so-called “lateral leakage”) can be effectively prevented.

  The structure of a three-dimensional gather can employ | adopt the structure used for the conventional disposable diaper and other absorbent articles. For example, a stretchable material (a three-dimensional gathered stretchable material) disposed on a part of the water-repellent sheet material and a sheet (gather) formed on the sheet material by the three-dimensional gathered stretchable material can be suitably used.

  The three-dimensional gather may be formed of a sheet material that is completely different from the top sheet and the back sheet, but may be formed by folding back a top sheet such as a center sheet or a side sheet. For example, the tape-type disposable diaper 1 shown in FIG. 5 is an example in which the three-dimensional gather 26 (26a, 26b) is formed by folding the side sheet 19. However, the three-dimensional gather may be formed by folding back a member other than the top sheet such as a second sheet.

  In order to prevent leakage from the crotch part, this three-dimensional gather may be formed at least in the crotch part, but may be formed in the front body or the back body. For example, the tape-type disposable diaper 1 shown in FIG. 5 has a pair of three-dimensional gathers 26 (26a, 26b) continuously from the crotch part 4 to both the front body 2 and the back body 6 along the longitudinal direction of the diaper. The example formed is shown. Further, at least one pair of solid gathers must be formed, but two or more pairs may be formed.

  The three-dimensional gather may be an inward gather that tilts toward the inside of the diaper, or may be an outward gather that tilts toward the outside of the diaper. Moreover, it can also be set as the three-dimensional gathers (C fold gather, Z fold gather, etc.) which formed the bending part and the folding | turning part in a part of height direction. For example, the tape-type disposable diaper 1 shown in FIG. 1 is an example in which the three-dimensional gather 26 (26a, 26b) is inverted and gathered.

[2-6] Various elastic materials:
In a tape-type disposable diaper, it is preferable to arrange an elastic material around the legs and an elastic material around the waist.

  The leg circumference elastic material is an elastic material arranged along the leg circumference opening. By arranging the leg-stretchable material, a gather (leg gather) rich in stretchability can be formed in the leg-surrounding opening. Therefore, it is difficult to form a gap around the leg, and urine leakage from the opening around the leg can be effectively prevented. Further, when the leg stretchable material is disposed, the leg stretchable material contracts on both sides of the absorbent body when changing the diaper, so that the vicinity of the crotch portion is deformed into a bowl shape and a recess is formed. For this reason, urine and body fluid accumulate in the concave portion, and the diaper can be easily replaced without spilling urine and body fluid.

  For example, the tape-type disposable diaper 1 shown in FIG. 5 is an example in which leg gathers are formed by arranging two leg elastic members 40 linearly along the longitudinal direction of the diaper. The leg-around elastic member 40 is made of rubber thread. However, the leg-surrounding elastic members are not necessarily arranged linearly, and may be arranged in a curved line along the curve of the leg-periphery opening, for example.

  In addition, although the tape-type disposable diaper 1 shown in FIG. 5 showed the example which made the shape, arrangement | positioning position, arrangement number, etc. of the leg periphery elastic material 40 left-right symmetric, those in which these are asymmetrical also in the scope of the present invention. included. And in the tape-type disposable diaper 1 shown in FIG. 5, although the example in which the leg periphery elastic material 40 was arrange | positioned three per one side was shown, only one or two may be arrange | positioned and four or more arrangement | positioning is carried out. May be. Further, when using a plurality of leg-surrounding stretchable materials, the thickness, stretch rate, etc. may be set as appropriate according to the purpose, and it is not necessary to use the same for all.

  The waist elastic material is an elastic material arranged along the waist opening. By arranging the elastic material around the waist, a gather (waist gather) rich in elasticity can be formed in the waist opening. This waist gather makes it difficult for gaps to be formed around the waist, preventing urine leakage from around the waist, and improving the fit of the diaper to the wearer, thereby preventing the diaper from falling down.

  In addition, the tape-type disposable diaper 1 shown in FIG. 5 is an example in which a belt-like waist elastic material 42 is disposed along the edge of the back body 6 of the diaper. The belt-like waist elastic member 42 is made of an elastic foam such as urethane foam. In the illustrated example, the waist elastic member 42 is disposed only on the back body (back side), but the waist elastic material may be disposed on the front body (abdominal side).

  For these stretchable materials, after considering the degree of shrinkage of gathers, etc., the constituent material, the elongation rate of the material, the stretched state at the time of fixing, etc. may be determined.

  As an elastic material, the elastic material which has been used with the conventional disposable diaper can be used conveniently. Specific examples include elastic rubber, elastic film, elastic foam (urethane foam, etc.), etc., as well as thread rubber and flat rubber made of elastic materials such as natural rubber and synthetic rubber (urethane rubber, etc.). .

  The stretchable material is preferably fixed in the stretched state in order to exert a sufficient stretch force. For example, when the elastic material is natural rubber or synthetic rubber, it is preferably fixed in a stretched state of 110 to 400%, and more preferably fixed in a stretched state of 200 to 300%. By fixing in the extended state in such a range, a sufficient stretching force can be applied.

  The stretchable material as described above is fixed to other constituent members of the diaper by an adhesive or other means. The fixing method may be, for example, adhesion using a hot melt adhesive or other highly fluid adhesive, or may be welding by heat such as heat sealing or ultrasonic waves.

[3] Manufacturing method of tape-type disposable diaper:
Hereinafter, the manufacturing method of the tape type disposable diaper of this invention is demonstrated in the example in the case of manufacturing the tape type disposable diaper 1 shown in FIG. First, on the surface of a long sheet material (back sheet material) which is a material of the back sheet 20, the absorbent body 22, the leg elastic member 40 and the waist elastic member 42 which are wrapped in a hydrophilic sheet are placed, Furthermore, the laminated body (diaper continuous body) used as the intermediate body of a diaper is obtained by mounting the elongate sheet material (top sheet material) used as the material of the top sheet 18 on the surface. At this time, as the top sheet material, two types of a top sheet material corresponding to the center sheet 18 and a top sheet material corresponding to the side sheet 19 are used. A three-dimensional gather 26 is formed by providing a folded portion on the sheet material corresponding to the side sheet 19.

  After attaching the fastening tape 10 of the present invention to the side edges 6a and 6b of the diaper back body 6 of the diaper continuous body obtained as described above, a portion corresponding to the opening around the leg of the diaper is formed in an arc shape. Cut out and cut (R cut) to form an opening around the leg. The tape-type disposable diaper 1 is manufactured by cutting the diaper continuous body into individual diapers.

  In addition to the method described above, a fastening tape is previously attached to the top sheet material, and on the surface of the back sheet material, the absorbent body wrapped in a hydrophilic sheet and the elastic material around the legs are placed, Furthermore, you may obtain a diaper continuous body by mounting the top sheet material in which the fastening tape was attached to the surface. The series of steps as described above can be continuously performed by mechanical means. For example, by adopting a method / apparatus such as continuously feeding a long sheet material from a roller, continuous production of a tape-type disposable diaper becomes possible, which contributes to an improvement in productivity.

  The tape-type disposable diaper of the present invention can be suitably used as a diaper for infants or for adults such as elderly people and persons with disabilities who need care.

It is a general | schematic expanded sectional view of the fastening tape of the tape-type disposable diaper which concerns on one Embodiment of this invention. 1 is a schematic enlarged plan view of a fastening tape of a tape-type disposable diaper according to an embodiment of the present invention. It is a general | schematic enlarged plan view of the fastening tape of the tape-type disposable diaper which concerns on other embodiment of this invention. It is a general | schematic enlarged plan view of the fastening tape of the tape type disposable diaper which concerns on other embodiment of this invention. 1 is a schematic plan view of a tape-type disposable diaper according to an embodiment of the present invention.

Explanation of symbols

1: Tape-type disposable diaper, 2: Front body, 4: Crotch, 6: Back body, 6a, 6b: Side edge, 10: Fastening tape, 12: Front patch, 18: Top sheet, 19: Side sheet 20: Back sheet, 22: Absorber, 26, 26a, 26b: Three-dimensional gather, 36, 36a, 36b: Three-dimensional gather elastic material, 40: Leg elastic material, 42: Waist elastic material, 44: Hook material, 48 : Base material, 52: loop material, 54, 54a, 54b: embossed part.

Claims (6)

The front body, the crotch part, and the back body are composed of each part, and are arranged so as to cover the upper surface of the absorbent body, and at least a part of the top sheet made of a liquid-permeable material, and the absorbent body. A back sheet made of a liquid-impermeable material disposed so as to cover the lower surface, and a stopper for fixing the back body and the front body disposed at least one on the left and right side edges of the back body. A tape-type disposable diaper comprising: a wearing tape; and a fastening region formed on the front body for fastening the fastening tape,
The fastening tape is composed of a base material portion and a hook material having a plurality of protrusions, the base material portion is a white sheet, the hook material is colored, and the base material portion A transparent or translucent region having a total light transmittance of 40% or more is formed at a portion where the hook material is disposed, and at least a part of the back surface of the hook material is the transparent or translucent region of the base material portion. Tape-type disposable diapers that can be seen from .   The tape-type disposable diaper according to claim 1, wherein the base material portion is a thermoplastic resin nonwoven fabric, and a transparent or translucent region is formed by melting by hot embossing. The base material part is a microporous film or non-woven fabric or a laminated sheet obtained by laminating two or more of these, and a transparent or translucent region can penetrate into the base material part to reduce opacity. The tape-type disposable diaper according to claim 1 , which is formed by applying a substance. The transparent material is a hot melt, and has (A) a styrene-block copolymer or a hydrogenated product thereof, (B) a tackifier resin, and (C) a plasticizer as main components. The tape-type disposable diaper described.   The tape-type disposable diaper as described in any one of Claims 1-4 from which the shape of the transparent or semi-transparent area | region formed in the said base material part differs on right and left.   The tape-type disposable diaper according to any one of claims 1 to 5, wherein a shape of a transparent or translucent region formed on the base material portion is an ideographic shape.

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