Classifications

• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
  • A61F13/00—Bandages or dressings; Absorbent pads
  • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
  • A61F13/551—Packaging before or after use
  • A61F13/5513—Packaging before or after use packaging of feminine sanitary napkins
  • A61F13/55135—Packaging before or after use packaging of feminine sanitary napkins before use
  • A61F13/5514—Packaging before or after use packaging of feminine sanitary napkins before use each item packaged single
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
  • A61F13/00—Bandages or dressings; Absorbent pads
  • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
  • A61F13/45—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the shape
  • A61F13/47—Sanitary towels, incontinence pads or napkins
  • A61F13/472—Sanitary towels, incontinence pads or napkins specially adapted for female use
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
  • A61F13/00—Bandages or dressings; Absorbent pads
  • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
  • A61F13/45—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the shape
  • A61F13/47—Sanitary towels, incontinence pads or napkins
  • A61F13/475—Sanitary towels, incontinence pads or napkins characterised by edge leakage prevention means
  • A61F13/4751—Sanitary towels, incontinence pads or napkins characterised by edge leakage prevention means the means preventing fluid flow in a transversal direction
  • A61F13/4755—Sanitary towels, incontinence pads or napkins characterised by edge leakage prevention means the means preventing fluid flow in a transversal direction the means being a flat barrier on or inside the absorbent article, e.g. backsheet wrapped around the edges
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
  • A61F13/00—Bandages or dressings; Absorbent pads
  • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
  • A61F13/45—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the shape
  • A61F13/47—Sanitary towels, incontinence pads or napkins
  • A61F13/476—Sanitary towels, incontinence pads or napkins characterised by encircling the crotch region of the undergarment
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
  • A61F13/00—Bandages or dressings; Absorbent pads
  • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
  • A61F13/56—Supporting or fastening means
  • A61F13/58—Adhesive tab fastener elements

Definitions

• the present invention relates to an absorbent article provided with a wing-shaped flap that is used so as to be wound around a crotch portion of an underwear when being fixed to the underwear.
• an absorbent article N such as a sanitary napkin, a panty liner, a cage sheet, an incontinence pad, for example, as shown in FIG. 12 and FIG. 13, a polyethylene sheet or a polyethylene laminated nonwoven fabric, etc.
• an absorbent body 52 made of cotton-like pulp or the like is interposed between a liquid-impervious back sheet 50 made of a material and a liquid-permeable surface sheet 51 made of a nonwoven fabric or a porous plastic sheet. ing.
• one or a plurality of adhesive layers 53, 53 are formed on the non-skin contact surface side (outer surface) in order to prevent misalignment in the mounted state
• wing-shaped flaps W, W that extend outward are integrally formed on both sides in the longitudinal direction of the napkin body, and the surface of the wing-shaped flaps W, W on the liquid-impermeable back sheet 50 side ( There are some which are provided with adhesive layers 54, 54 on the outer surface.
• the absorbent article N When the absorbent article N is fixed to the undergarment 30, as shown in Fig. 14, the absorbent article N is locally applied and the wing-shaped flaps W, W protruding laterally are put on the undergarment. Take out the two wing-shaped flaps W and W at the folding lines RL and RL, and attach them to the outer surface of the crotch of the underwear 30 while winding the crotch part of the underwear.
• the release paper is peeled off, and the absorbent article N is attached to the underwear, the wing-shaped flaps W, W are backed. Since the side folds are attached, the wing-shaped flaps W and W must be spread by hand, and in some cases, the adhesive layer 54 of the wing-shaped flaps W and W adheres to the main body backsheet 50. Therefore, when this was peeled off, the base material of the main body backsheet 50 could be stretched or torn, making the napkin unusable.
• the wing-shaped flaps W, W have creases on the use surface side, so that the adhesive is formed on the wing-shaped flaps W.
• the layer 54 does not adhere to the adhesive layer 53 formed on the back surface of the main body.
• the release paper 56 straddled between the wing-shaped flaps W and W must be peeled off by hand and discarded, and the one-step opening method (the release paper can be removed automatically between each opening hand). The method to make it possible is not realized.
• the wing-shaped flaps W and W do not automatically open even if the release paper 56 is peeled off.
• the wing-shaped flaps W and W remain folded by the folding folds. It took a lot of time to wear.
• the applicant of the present invention is provided with a wing release material that covers a slip-resistant adhesive layer formed on the wing-shaped flap in the individually packaged product state, and the wing-shaped flap is provided.
• the wing release material Is folded together with the wing release material on the liquid-permeable surface sheet side, and the wing release material extends over the fountain position of the wing-shaped flap to the surface on the liquid-impervious back sheet side, And the wing release material is fixed to the individual packaging material directly on the liquid-impervious back sheet side surface or via the main body release material covering the main body displacement prevention adhesive layer, and the wing-shaped flap
• the wing-shaped flaps When the sheet is folded together with the wing release material on the liquid-permeable surface sheet side, the wing-shaped flaps have overlapping ends, and the overlapping part has a wing shape. Wraps is temporarily fixed! /, We have proposed a Ru napkin.
• Patent Document 1 JP-A-9 94267
• Patent Document 2 Utility Model Registration No. 2567607
• Patent Document 3 Japanese Patent Application Laid-Open No. 2004-113590 Disclosure of the invention
• the wing-shaped flap does not adhere to the adhesive layer formed on the back surface of the main body at the time of opening, the one-step opening method can be realized, and the packaging material can be used. It is possible to reduce the labor of wearing by automatically unfolding the wing-shaped flap when peeling. In addition, by temporarily securing the wing-shaped flaps together, the wing-shaped flaps can be stably folded in the manufacturing process, eliminating the flapping of the wing-shaped flaps during line transport, and ensuring stable operation. It becomes possible to become.
• the wing-shaped flap is folded to the liquid-permeable surface sheet side when the individual packaging material is peeled from the napkin together with the release material at the time of opening, it is large at the stage where the wing release material is deployed. Due to resistance, the wing release material could tear.
• a first problem of the present invention is that an absorbent article having a wing-shaped flap, in which the wing-shaped flap is folded in the individual packaging state, is peeled off from the napkin together with the release material when the absorbent article is opened.
• the wing release material can be smoothly and unfolded together with the wing-shaped flap without resistance so that the release material can be easily separated from the absorbent article.
• the present invention according to claim 1 is mounted on both side portions of the main body portion in which the absorbent body is interposed between the liquid-permeable top sheet and the liquid-impervious back sheet.
• the absorbent body is interposed between the liquid-permeable top sheet and the liquid-impervious back sheet.
• a main body slip-preventing adhesive layer is formed on the liquid-impervious back sheet side surface of the main body portion, and a wing slip-preventing adhesive layer is formed on the liquid-impervious back sheet side surface of the wing-shaped flap.
• the wing-shaped flap is folded together with the wing release material on the liquid-permeable surface sheet side, and the individual packaging material is fixed to the main body release material and / or the wing release material,
• the tip portions of the wing-shaped flaps overlap on the liquid-permeable surface sheet side, and the wing-shaped flaps are overlapped with each other directly by the wing temporary fixing adhesive layer or through the wing release material.
• the adhesive strength of the wing temporary fastening adhesive layer joining the wing-shaped flaps to each other indirectly is set lower than the adhesive strength between the wing slip-proof adhesive layer and the wing release material.
• the wing-shaped flap when the individual packaging material is peeled off, the wing-shaped flap is pulled to the back sheet side by the wing release material, and is folded in the stomach. Will be automatically expanded.
• the adhesive strength of the wing temporary fixing pressure-sensitive adhesive layer that connects the wing-shaped flaps to each other is set to be lower than the adhesive strength between the wing slip-proof adhesive layer and the wing release material.
• the temporary fixing between the wing-shaped flaps can be easily released, and the force S can be applied to smoothly deploy the wing release material without resistance.
• the wing temporary fastening adhesive layer joining the wing-shaped flaps has an adhesive strength of 0.05 to 1.00;
• the adhesive strength between the layer and the wing release material is 0.15 ⁇ ; 1. 50 (N), and the adhesive strength between the temporary wing adhesive layer and the adhesive strength between the wing slip-off adhesive layer and the wing release material
• the calculated adhesive strength ratio is 0.05 to 0.80.
• the position of the front shape line of the wing release material is spaced at least 5 mm forward from the front base position of the wing-shaped flap.
• An absorbent article according to any one of 1 and 2 is provided.
• the width of the release material for the main body is at least 60% or more of the distance between the folding positions of the wing-shaped flaps. Articles are provided.
• the longitudinal dimension of the release material for wings is a dimension that is equal to or less than the distance between the tips of the wing-shaped flaps in a state where the absorbent article is deployed.
• the inventions according to claim 4 and claim 5 define suitable dimensions of the release material for the main body and the release material for the wing.
• the main body release material and / or the wing release material is subjected to a release treatment on the bonding surface side with respect to the anti-slipping adhesive and printed on the opposite surface.
• the invention according to claim 6 is characterized in that the release material for the main body and / or the release material for the wing is printed on the surface opposite to the joint surface side with respect to the adhesive to prevent slippage. It has improved concealment when wrapping and discarding an absorptive article.
• the wing release material is provided with one or a plurality of marking lines along the longitudinal direction of the absorbent article on the upper surface of the folded part on the liquid-permeable surface sheet side.
• An absorbent article according to any one of claims 16 is provided.
• the invention according to claim 7 is characterized in that one or a plurality of marking lines are provided along the longitudinal direction of the absorbent article on the upper surface of the folded part of the wing release material toward the liquid-permeable surface sheet. It is intended to be provided. By monitoring the direction of the marking line with a sensor during the manufacturing process, it is possible to detect whether the wing-shaped flap is folded in a normal state together with the wing release material!
• the marking line is folded on both sides of a wing-shaped flap.
• the marking lines can be monitored at the folded state of both wing-shaped flaps by providing the marking lines respectively on the folded portions on both sides.
• the crotch portion of the underwear is attached to each side of the main body portion in which the absorber is interposed between the liquid-permeable top sheet and the liquid-impervious back sheet.
• a main body misalignment-preventing adhesive layer is formed on the surface of the main body portion on the liquid-impervious back sheet side, and the wing-shaped flap is not
• An adhesive layer is formed on the surface of the liquid-permeable back sheet side to prevent wing slippage.
• the main body anti-slipping adhesive layer and the anti-slipping adhesive layer formed on the wing-shaped flap are covered with a single release material, and the wing-shaped flap is While being folded together with the release material on the liquid-permeable surface sheet side, the individual packaging material is fixed to the release material,
• the wing-shaped flaps overlap with each other, and the wing-shaped flaps overlap each other directly by the wing temporary fixing adhesive layer or indirectly through the release material.
• the adhesive strength of the wing temporary fixing pressure-sensitive adhesive layer joining the wing-shaped flaps is set lower than the adhesive strength of the main body anti-slip adhesive layer and the wing anti-slip adhesive layer.
• An absorbent article is provided.
• the invention according to claim 9 is such that the release material for the main body and the release material for the wing are not separated, but are covered with a single release material.
• the individual packaging material is peeled off together with the napkin force upon opening.
• the wing release material can be unfolded with the wing-shaped flap smoothly without resistance, and the release material can be easily removed from the absorbent article.
• FIG. 1 is a partially broken development view of a sanitary napkin 1 according to the present invention
• FIG. 2 is a rear view thereof, and is a view taken along line III-III in FIG.
• the sanitary napkin 1 includes a liquid-impervious back sheet 2 made of a polyethylene sheet, a polypropylene sheet, and the like, a liquid-permeable top sheet 3 that allows menstrual blood, venom, and the like to permeate quickly, and both the sheets 2 , 3 comprising an absorbent body 4 made of cotton-like pulp or synthetic pulp, crepe paper 5 surrounding the absorbent body 4 in order to maintain the shape and diffusibility of the absorbent body 4, and both sides of the surface It is composed of side nonwoven fabrics 6 and 6 formed along the longitudinal direction of each part.
• the outer edge portions of the liquid-impervious back sheet 2 and the liquid-permeable surface sheet 3 are bonded by an adhesive such as hot melt or an adhesive means such as heat seal.
• the liquid-impervious back sheet 2 and the side nonwoven fabric 6 which are bonded and extend laterally from the absorbent body 4 at both side edges thereof are bonded by an adhesive such as hot melt or an adhesive means such as heat seal. It is joined.
• the flap portions at both side edges are referred to as “side outer peripheral flaps F”.
• the liquid-impermeable back sheet 2 is a force that uses a sheet material having at least water shielding properties such as an olefin resin sheet such as polyethylene or polypropylene.
• a laminated nonwoven fabric obtained by laminating a nonwoven fabric on a polyethylene sheet or the like, and further waterproof.
• the ability to use a non-woven sheet in this case, a waterproof film and a non-woven cloth make up a liquid-impervious back sheet) and the like after securing a substantially liquid-imperviousness through a film. .
• those having moisture permeability tend to be used.
• This water-blocking / moisture-permeable sheet material is a microporous sheet obtained by melt-kneading an inorganic filler in an olefin-based resin such as polyethylene or polypropylene to form a sheet, and then stretching in a uniaxial or biaxial direction. It is.
• a porous or non-porous nonwoven fabric, a porous plastic sheet, or the like is preferably used as the material fibers constituting the nonwoven fabric.
• material fibers constituting the nonwoven fabric for example, synthetic fibers such as polyethylene or polypropylene, synthetic fibers such as polyester and polyamide, regenerated fibers such as rayon cubra, and natural fibers such as cotton can be used.
• Nonwoven fabrics obtained by an appropriate processing method such as a spunlace method, a spunbond method, a thermal bond method, a melt blown method, or a needle punch method can be used. Of these processing methods, the spunlace method is superior in terms of flexibility and drapeability, and the thermal bond method is superior in terms of being bulky and soft.
• side embosses 7 and 7 are formed along the longitudinal direction on both sides across the site for blood discharge, and arcuate embosses 8 and 8 are respectively formed on the front and rear portions. 8 is formed.
• the absorbent body 4 interposed between the liquid-impervious back sheet 2 and the liquid-permeable top sheet 3 is composed of, for example, fluffy pulp and a water-absorbing polymer.
• the water-absorbing polymer is mixed in the pulp constituting the absorber, for example, as a granular powder.
• the pulp include cellulose fibers such as chemical pulp and dissolved pulp obtained from wood, and artificial cellulose fibers such as rayon and acetate. It is preferably used in terms of function and price.
• the crepe paper 5 surrounding the absorber 4 is provided as in this example, the crepe paper 5 is interposed between the liquid-permeable surface sheet 3 and the absorber 4 as a result.
• the above-mentioned crepe paper 5 which is excellent in properties makes it possible to quickly diffuse body fluids and to prevent the return of menstrual blood.
• side nonwoven fabrics 6 and 6 are provided on both sides of the surface of the sanitary napkin 1 along the longitudinal direction and over almost the entire length of the napkin 1. Wings-like flaps W and W are formed by part of the liquid-impervious back sheet 2 that also extends laterally.
• a water-repellent treated nonwoven fabric or a hydrophilic treated nonwoven fabric can be used from the viewpoint of important functions. For example, if importance is placed on functions such as preventing permeation of menstrual blood or vaginal discharge, or enhancing the feel of the skin, a silicone-based, araffin-based, alkyl chloride water-repellent, etc. is coated. It is desirable to use a water-repellent nonwoven fabric.
• a method of polymerizing a compound having a hydrophilic group for example, an oxidation product of polyethylene glycol, in the process of producing a synthetic fiber.
• a metal salt such as stannic chloride to partially dissolve the surface to make it porous and deposit metal hydroxides
• a hydrophilic non-woven fabric that has a synthetic fiber swelled or made porous by applying a capillary phenomenon to impart hydrophilicity!
• an underwear is placed on the non-skin contact surface of the main body part in which the absorbent body 4 is interposed between the liquid-permeable top sheet 3 and the liquid-impervious back sheet 2.
• a plurality of strips of adhesive body layers 9, 9, ... in the illustrated example are formed according to an appropriate coating pattern for fixing to the body, and these body stopper adhesive layers 9, 9, ⁇ ⁇ Is covered with release material 11 for the main body.
• wing-slipping adhesive layers 10 and 10 are formed on the liquid-impervious back sheet 2 side of the wing-shaped flaps W and W, and the wing-slipping adhesive layers 10 and 10 have a width. Covered by a single wing strip 12 that crosses in the direction.
• the main body release material 11 and the wing release material 12 are firmly fixed and integrated in a region surrounded by the chain line 13 so as not to be peeled off by a hot melt adhesive or the like.
• both of the main body release material 11 and the wing release material 12 are fixed to a packaging sheet 16 described later.
• a styrenic polymer for example, a styrenic polymer, a tackifier, or a plasticizer mainly used is preferably used.
• the styrenic polymer include styrene ethylene-butylene styrene block copolymer, styrene-butylene styrene block copolymer, and styrene isobutylene styrene copolymer. Two or more polymer blends may be used. Of these, styrene, ethylene-butylene, and styrene block copolymers are preferred because of their good thermal stability.
• tackifier and the plasticizer those that are solid at room temperature can be preferably used.
• the tackifier include C5 petroleum resin, C9 petroleum resin, dicyclopentagen petroleum oil resin, Examples include rosin petroleum resins, polyterpene resins, terpene phenol resins, etc.
• the plasticizer include monomer plasticizers such as trifresil phosphate, dibutyl phthalate, and diactyl phthalate, as well as bull polymers and polyesters. Polymer plasticizers.
• a release treatment such as a silicone-based resin, a fluorine-based resin, or a tetrafluorinated styrene-based resin, for example, is applied to the contact surface with respect to the anti-displacement adhesive layers 9 and 10. It is possible to use a force for applying a chemical solution, a paper or plastic sheet that has been spray-coated and subjected to a release treatment.
• at least the wing release material 12 is made of a plastic sheet rich in flexibility so that the wing flaps W and W can be smoothly unfolded when opened from the individual packaging state and the individual packaging material is peeled off. It is good.
• the film itself or the nonwoven fabric itself may be used as long as it does not cause a substantial decrease in adhesive force without special release treatment.
• one wing-shaped flap W is placed on the side of the folding line RL set near the outer side of the absorber 4 side edge. Folded to the liquid-permeable surface sheet 3 side together with the wing release material 12 including the outer peripheral flap F
• the other wing-shaped flap W is a fold line RL set near the outer side of the absorber 4 side edge, and the permeable surface sheet together with the wing release material 12 including the side outer peripheral flap F.
• the wing-shaped flap W is kept folded together with the wing release material 12 on the liquid-permeable surface sheet 3 side. Specifically, the wing-shaped flaps W and W folded on the liquid-permeable surface sheet 3 side are overlapped with each other, and the wing-shaped flaps W and W are overlapped with each other at the overlapping portion.
• the wing-shaped flap W is directly bonded and temporarily fixed as shown in FIG.
• the wing temporary fixing adhesive layer 14 provided on the back surface side (or front surface side) of the tip.
• the wing-shaped flaps W and W are temporarily attached to each other, as shown in FIG. 6, the wing temporary fixing adhesive layer 14 is provided on the front surface side of the wing-shaped flap W and is on the lower side.
• the wing temporary fixing adhesive 14 is adhered to the wing release material 12, and the wing-shaped flap W W may be indirectly joined through the wing release material 12.
• the overlap margin S of the wing-shaped flaps W and W is preferably about 1/4 or more of the protruding length L of the wing-shaped flap W in order to further stabilize the operation.
• the adhesive strength of the wing temporary tacking adhesive layer 14 in which the wing-shaped flaps W, W are bonded to each other is such that the wing slip-stopping adhesive layer 10 and the wing-slipping adhesive layer 10 are peeled off from each other. It is set lower than the adhesive strength with the material 12.
• the adhesive strength of the wing temporary fixing pressure-sensitive adhesive layer 14 joining the wing-shaped flaps is 0.05 to 1.00; preferably 0.00 (N), preferably 0.05 to 0.60 (N).
• the adhesive strength between the wing slip-stopping adhesive layer 10 and the wing release material 12 is 0.15 ⁇ ; L50 (N), preferably 0.25 ⁇ ;! 30 (N).
• the adhesive strength ratio calculated by the adhesive strength of the pressure-sensitive adhesive layer 14 / the adhesive strength between the wing-slipping pressure-sensitive adhesive layer 10 and the wing release material 12 is 0.05-0.80, preferably 0.05-0.70. Is desirable. If the adhesive strength of the wing temporary fixing pressure-sensitive adhesive layer 14 is less than 0.05 (N), the wing-shaped flaps W and W cannot be sufficiently temporarily attached. On the other hand, if it exceeds 1.00 (N), the wing-shaped flaps W and W cannot be easily opened when the release materials 11 and 12 are peeled off.
• the adhesive strength between the wing slip-stopping adhesive layer 10 and the wing release material 12 is less than 0.15 (N)
• a shift may occur when the wing slip-fastening adhesive layer 10 is attached to shorts.
• it exceeds 1.50 (N) it becomes difficult to peel the release materials 11 and 12.
• the adhesive strength is a numerical value obtained by the following test method.
• the adhesive strength of the wing temporary fixing pressure-sensitive adhesive layer 14 and the adhesive strength of the wing slip-proof adhesive layer 10 and the wing release material 12 are both measured with a Tensilon tensile tester.
• a wing sample (length 40mm x width 60mm) that takes the longitudinal direction of the napkin in the vertical direction, the lateral direction in the short direction, and the wing temporary fixing point in the center. Hold the tip of the wing and the other side of the wing in the chuck and start the measurement. Measure the load peak when the wing is completely peeled off.
• Adhesive strength between the wing slip-stopping adhesive layer and the wing release material (Peel strength test) The direction corresponding to the longitudinal direction of the napkin is taken in the vertical direction, and the direction corresponding to the lateral direction is taken in the transverse direction.
• Wing sample (40 mm long x 50 mm wide) containing wing film and wing adhesive is used.
• the position of the front shape line A of the wing release material 12 is separated from the front base position of the wing-shaped flap W by at least 5 mm (symbol SL) to the front side.
• the base position of the wing-shaped flap W is determined based on the folding line R when the shorts are attached.
• the width B of the release material 11 for the main body is at least 60% or more of the distance BK between the folding positions of the wing-shaped flaps W and W, and the longitudinal dimension L of the release material 12 for the wing is absorbed. It is desirable that the distance between the tips of the wing-shaped flaps W and W is not more than LK in the state where the property article is unfolded.
• the main body release material 11 and / or the wing release material 12 is colored or printed with a pattern or the like on the surface opposite to the bonding surface side with respect to the anti-slipping adhesives 9, 10. Is desirable. When the used napkin 1 is wrapped and discarded by printing, the concealability of menstrual blood and the like is increased.
• one or a plurality of drawings along the longitudinal direction of the napkin 1 are provided on the upper surface of the folded portion of the wing release material 12 on the liquid-permeable surface sheet 3 side.
• the marking line it is possible to monitor the folding state of the wing-shaped flaps on both sides in the production line, and to prevent the occurrence of defective products that are folded diagonally or relied on. It becomes like this.
• the sanitary napkin 1 is individually mounted with the individual sheet 16.
• the individual packaging method is such that the width dimension is narrower than the unfolding width of the napkin 1 (distance between the tips of the wing-shaped flaps IW) and the wing-shaped flaps W and W are folded.
• the individual sheet 16 having a predetermined length that is wider than that of the individual sheet 16 is arranged on the individual sheet 16 so that at least one short side 16b of the individual sheet 16 is positioned outside one of the front and rear ends of the napkin 1.
• the napkin 1 is disposed, and the individual packaging sheet 16 and the main body release material 11 and / or the wing release material 12 are firmly fixed to each other with a hot melt adhesive or the like.
• the fold line (2) position The front edge of the napkin is folded, and as shown in Fig. 8, the open side edge portion 16a of the individual sheet 16 is singly or in combination with an appropriate sealing means such as embossing, heat fusion, adhesive, etc. Try to block. Further, the front-rear direction edge 16 b of the individual sheet 16 is preferably sealed with a tab tape 17 after being joined with an adhesive.
• the position of the front shape line A of the wing release material 12 is separated from the front base position of the wing-shaped flap W by at least 5 mm to the front!
• the folds of the wing-shaped flap W are gradually released from the front side of the napkin 1 and the wing-shaped flap W is deployed.
• the resistance force acting on the material 12 is reduced, and smooth deployment is possible.
• the wing release material 12 is peeled off from the wing slip-off adhesive 10
• the wing-shaped flap W is in a state of gradually unfolding. The ability to make it easy to record S.
• the wing-shaped flaps W, W have some creases on the use surface side after the wing-shaped flaps W, W are unfolded, the wing-shaped flaps W, W It will not be bonded to the anti-displacement adhesive layer 9, 9.
• the release material 11 for the main body is peeled off together with the release material 12 for the wing, so that a complete one-step opening method can be realized.
• the main body release material 11 and the wing release material 12 are separated from each other, and the two are firmly fixed so as not to be separated, as shown in FIG. 1 piece of release material 18 Therefore, the main body misalignment adhesives 9, 9, and the wing misalignment adhesives 10, 10 may be covered.
• the wing-shaped flaps W, W are folded to the liquid-permeable surface sheet 3 side together with the side outer peripheral flap F with the position near the outside of the side edge of the absorber 4 as a fold line.
• the present invention is for night use in which a wing-shaped flap for hip-holding is formed on the rear side. The same can be applied to sanitary napkins.
• the wing-shaped flap W is formed by the side nonwoven fabric 6 and the liquid-impermeable back sheet 2.
• FIG. 1 is a partially broken development view of a sanitary napkin 1 according to the present invention.
• FIG. 2 is a rear view thereof.
• FIG. 3 is a view taken along line III-III in FIG.
• FIG. 4 is a plan view showing how to fold a wing-shaped flap.
• FIG. 5 is a cross-sectional view thereof (a view taken along line V—V in FIG. 4).
• FIG. 6 is a plan view showing a folding procedure according to another example of the wing release material 12.
• FIG. 7 is a perspective view showing an individual packaging procedure.
• FIG. 8 is a perspective view showing an individual packaging state.
• FIG. 9 is a perspective view showing an opening procedure.
• FIG. 10 is a back view of the napkin showing another example of the release material.
• FIG. 11 is a development view showing a modified example of the wing release material 12 and other folding procedures of the wing-shaped flaps W and W.
• FIG. 12 is a development view of a conventional sanitary napkin N.
• FIG. 13 is a cross-sectional view thereof.
• FIG. 14 is a diagram showing the mounting state.
• FIG. 15 is a plan view showing a folding procedure of conventional wing-shaped flaps W and W.

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• 2006
  • 2006-11-30 JP JP2006323782A patent/JP4912847B2/ja active Active
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