US20010018581A1 - Surface fastener and paper diaper using the surface fastener - Google Patents
Surface fastener and paper diaper using the surface fastener Download PDFInfo
- Publication number
- US20010018581A1 US20010018581A1 US09/300,640 US30064099A US2001018581A1 US 20010018581 A1 US20010018581 A1 US 20010018581A1 US 30064099 A US30064099 A US 30064099A US 2001018581 A1 US2001018581 A1 US 2001018581A1
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- United States
- Prior art keywords
- engaging elements
- adhesive layer
- substrate sheet
- adhered
- surface fastener
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- A—HUMAN NECESSITIES
- A44—HABERDASHERY; JEWELLERY
- A44B—BUTTONS, PINS, BUCKLES, SLIDE FASTENERS, OR THE LIKE
- A44B18/00—Fasteners of the touch-and-close type; Making such fasteners
- A44B18/0069—Details
- A44B18/0073—Attaching means
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- 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
- A61F13/5622—Supporting or fastening means specially adapted for diapers or the like
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T24/00—Buckles, buttons, clasps, etc.
- Y10T24/27—Buckles, buttons, clasps, etc. including readily dissociable fastener having numerous, protruding, unitary filaments randomly interlocking with, and simultaneously moving towards, mating structure [e.g., hook-loop type fastener]
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T24/00—Buckles, buttons, clasps, etc.
- Y10T24/27—Buckles, buttons, clasps, etc. including readily dissociable fastener having numerous, protruding, unitary filaments randomly interlocking with, and simultaneously moving towards, mating structure [e.g., hook-loop type fastener]
- Y10T24/2708—Combined with diverse fastener
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T24/00—Buckles, buttons, clasps, etc.
- Y10T24/33—Buckles, buttons, clasps, etc. having adhesive fastener
Definitions
- This invention relates to a surface fastener to be used as a fastener of a disposable paper diaper, the surface fastener being improved in its attaching means so that the paper diaper is easy to handle.
- FIG. 10 of the accompanying drawings shows a paper diaper fastener which is disclosed in Japanese Utility Model Publication No. Hei 1-29230.
- a plastic substrate tape 1 ′ has on its one surface an adhesive layer 7 ′ extending from the center to one end and a protective peel portion 8 ′ extending from the center to the other end.
- the plastic substrate tape 1 ′ has another protective peel portion 8 ′ extending from the center to one end and another adhesive layer 7 ′ extending from the center to the other end, which is a reverse arrangement to that on the one surface.
- the plastic substrate tape 1 ′ is attached in a folded form to a paper diaper A′ and, in use, the adhesive layer 7 ′ is peeled off the protective peel portion 8 ′ and is then adhered to a companion attaching section of the diaper A′.
- Japanese Patent Laid-Open Publication No. Hei 2-5947 discloses a concept of using a surface fastener SF in a disposable diaper.
- a thin strong flexible substrate plate has on its front surface a multiplicity of resilient mushroom-shaped engaging elements 3 ′′ each having a stem 3 ′′ b projecting upright from the front surface and a round head 3 ′′ a at the top of the stem 3 ′′ b.
- This surface fastener is fixed to an end of a flexible elongated rectangular polymer tab and is provided with a low-viscosity pressure-sensitive adhesive agent so that it is kept in a folded form; in use, the surface fastener is unfolded and is then fastened with a companion surface fastener.
- a first object of this invention is to provide a surface fastener which is suitable for a disposable paper diaper and in which either an adhesive layer or an adhesive double coated tape has such a form as not to contact an infant's skin directly and which is easy to handle when the used paper diaper is to be cast off, at which time the used diaper is folded into a compact size and is wrapped in a simple manner.
- a second object of the invention is to provide a surface fastener which is very simple to attach and handle with respect to a paper diaper.
- a third object of the invention is to provide a surface fastener which is shaped into a form suitable for use in a paper diaper in view of relation between the adhesive strength of an adhesive layer and an adhesive double coated tape with respect to the surface fastener and the shape of engaging elements.
- a fourth object of the invention is to provide a surface fastener which has a shape suitable for use in a paper diaper by specifying the surface fastener manufacturing means and shape.
- a fifth object of the invention is to provide a surface fastener of which hook-shaped engaging elements are suitable for a paper diaper by specifying the hook-shaped engaging element manufacturing means.
- a sixth object of the invention is to provide a paper diaper to which a surface fastener is attached in an optimal form and in which the surface fastener has such a shape that an adhesive layer and an adhesive double coated tape will not come into direct contact with an infant's skin.
- a seventh object of the invention is to provide a paper diaper in which a surface fastener can be attached in a simple manner and which can be handled simply when it is to be cast off after using.
- a surface fastener comprising: a first substrate sheet having on its front surface a multiplicity of first engaging elements and on its rear surface a first adhesive layer; a second substrate sheet having on its front surface a multiplicity of second engaging elements engageable with the first engaging elements and on its rear surface a second adhesive layer; the first adhesive layer having an adhesive strength smaller than that of said second adhesive layer.
- the first adhesive layer is an adhesive double coated tape and has on its outer surface a backing sheet adhered thereto, while the second adhesive layer has on its outer surface a peel paper adhered thereto.
- the backing sheet has on its outer surface another adhesive layer to an outer surface of which another peel paper is adhered.
- the second engaging elements of the second substrate sheet on which the first-mentioned adhesive layer is disposed are loop-shaped engaging elements, and the first engaging elements of the first substrate sheet on which the adhesive double coated tape is disposed are hook-shaped engaging elements.
- At least one of the first and second substrate sheets is knitted or woven, and the engaging elements of one of the first and second substrate sheets are hook-shaped engaging elements and/or loop-shaped engaging elements.
- hook-shaped engaging elements are molded on the front surface of the first substrate sheet by injection molding.
- a paper diaper using a plurality of surface fasteners comprising a front covering portion and a hip covering portion having a plurality of attachment strips at its opposite sides, each surface fastener comprising: a first substrate sheet having on its front surface a multiplicity of first engaging elements; a second substrate sheet having on its front surface a multiplicity of second engaging elements engageable with the first engaging elements and on its rear surface an adhesive layer adhered to each of the opposite sides of the front covering portion; and an adhesive double coated tape adhered to a rear surf ace of the first substrate sheet with an adhesive strength smaller than that of the adhesive layer, the adhesive double coated tape being adhered to each of the attachment strips of the hip covering portion.
- a backing sheet is adhered to an outer surface of the adhesive double coated tape and has on a surface opposite to the tape an additional adhesive layer of which outer surface is adhered to each of the attachment strips of the hip covering portion.
- the second engaging elements of each second substrate sheet on which the first-mentioned adhesive layer is disposed are loop-shaped engaging elements, and the first engaging elements of each first substrate sheet on which the adhesive double coated tape is disposed are hook-shaped engaging elements.
- the first or second substrate sheet is knitted or woven, and the engaging elements of the first or second substrate sheets are hook-shaped engaging elements and/or loop-shaped engaging elements.
- the hook-shaped engaging elements are molded on the front surface of the first substrate sheet by injection molding.
- FIG. 1 is a front view of a surface fastener according to a first embodiment of this invention
- FIG. 2 is a front view of a modified surface fastener according to a second embodiment of the invention.
- FIG. 3 is a perspective view showing a paper diaper in an opened posture
- FIG. 4 is a perspective view showing the paper diaper in a fastened posture
- FIG. 5 is a side view showing one example of use of the surface fastener of FIG. 1;
- FIG. 6 is a side view showing one example of use of the surface fastener of FIG. 2;
- FIG. 7 is a side view showing the manner in which the surface fastener of FIG. 6 is separated
- FIG. 8 is a side view showing one example of use of another modified surface fastener according to a third embodiment of the invention.
- FIG. 9 is a side view showing one example of use of an injection-molded surface fastener according to a fourth embodiment
- FIG. 10 is a fragmentary cross-sectional view of a conventional surface fastener used in a paper diaper.
- FIG. 11 is a fragmentary perspective view of another conventional surface fastener used in a paper diaper.
- FIG. 1 shows a surface fastener according to a first embodiment of this invention which is designed in such a manner that an adhesive layer and an adhesive double coated tape would not tough the infant's skin when the surface fastener is used for a paper diaper.
- a male surface fastener member includes a first substrate sheet 1 having on its front surface a multiplicity of hook-shaped engaging elements 3 , an adhesive double coated tape 5 adhered to a rear surface of the first substrate sheet 1 , and a backing sheet 6 adhered to an outer surface of the tape 5 .
- a female surface fastener member includes a second substrate sheet 2 having on its front surface a multiplicity of loop-shaped engaging elements 4 , an adhesive layer 7 on a rear surface of the second substrate sheet 2 , and a peel paper 8 adhered to an outer surface of the adhesive layer 7 .
- FIG. 2 shows an alternative surface fastener according to a second embodiment of the invention.
- a male surface fastener member includes a first substrate sheet 1 having on its front surface a multiplicity of hook-shaped engaging elements 3 , an adhesive double coated tape 5 on a rear surface of the substrate sheet 1 , a backing sheet 6 adhered to an outer surface of the adhesive double coated tape 5 , an adhesive layer 7 on an outer surface of the backing sheet 6 , and a peel taper 8 adhered to an outer surface of the adhesive layer 7 .
- a female surface fastener member includes a second substrate sheet 2 having on its front surface a multiplicity of loop-shaped engaging elements 4 , an adhesive layer 7 on a rear surface of the substrate sheet 2 , a peel paper 8 adhered to an outer surface of the adhesive layer 7 .
- the first and second substrate sheets 1 , 2 are woven or knitted of synthetic fibers such as polyamide or polyester and, at the same time, the hook-shaped engaging elements 3 are formed from monofilament while the loop-shaped engaging elements 4 are formed from multifilament.
- the backing sheet 6 is made of thermoplastic resin.
- the adhesive double coated tape 5 and the adhesive layer 7 are made of rubber resin, acrylic resin, etc.
- the adhesive double coated tape 5 has an adhesive strength smaller than that of the adhesive layer 7 .
- FIGS. 3 and 4 respectively shows an example in which the foregoing surface fasteners are used in a paper diaper A.
- a pair of female surface fastener members are attached to the outer surface of a front covering portion 10 of the paper diaper A at its opposite sides, while a pair of male surface fastener members are attached to inner surfaces of a pair of attachment strips 12 fixed to opposite sides of a hip covering portion 11 of the paper diaper A.
- FIG. 5 shows one example in which the surface fastener of FIG. 1 is used in a paper diaper A.
- the second substrate sheet 2 of each female surface fastener is attached to each of opposite sides of the front covering portion 10 of the paper diaper A as shown in FIG. 5 by the adhesive layer 7 with the peel paper 8 peeled off the rear surface thereof.
- the first substrate sheet 1 of each male surface fastener of FIG. 1 is adhered to each of the attachment strips 12 of the hip covering portion 11 of the paper diaper A by the adhesive double coated tape 5 with the backing sheet 6 peeled off the rear surface thereof.
- the hook-shaped engaging elements 3 of the first substrate sheet 1 are brought into engagement with the loop-shaped engaging elements 4 of the second substrate sheet 2 as the female surface fastener is pressed against the corresponding male surface fastener.
- a pair of backing sheets 6 may be attached directly to the hip covering portion 11 for substitution for the attachment strips 12 .
- each attachment strip 12 is pulled outwardly so as that the adhesive double coated tape 5 is peeled off the first substrate sheet 1 and hence stay on the attachment strip 12 , and then the paper diaper A is folded, whereupon the paper diaper A is wrapped in a compact size by adhering the adhesive double coated tapes 5 of the attachment strips 12 to the outer surface of the folded paper diaper A at some positions thereof.
- FIGS. 6 and 7 respectively shows another example in which the surface fastener of FIG. 2 is used in a paper diaper A.
- the second substrate sheet 2 of each female surface fastener member is attached to each of opposite sides of the front covering portion 10 of the paper diaper A by the adhesive layer 7 with the peel paper 8 peeled off.
- the first substrate sheet 1 of each male surface fastener member is attached to each of the attachment strips 12 of the hip covering portion 11 of the paper diaper A by the adhesive layer 7 with the peel paper 8 peeled off.
- one end of the attachment strip 12 is pulled outwardly to separate the adhesive double coated tape 5 from the first substrate sheet 1 so as to stay on the backing sheet 6 .
- the paper diaper A is wrapped by adhering the separated attachment strips 12 to the outer surface of the folded paper diaper A at some positions.
- FIG. 8 shows a third embodiment in which a modified surface fastener is used in a paper diaper A.
- the male surface fastener member includes a second substrate sheet 2 having on its front surface a multiplicity of hook-shaped engaging elements 3 , an adhesive layer 7 on a rear surface of the second substrate sheet 2 , and a peel paper 8 adhered to an outer surface of the adhesive layer
- the female surface fastener member includes a first substrate sheet 1 having on its front surface a multiplicity of loop-shaped engaging elements 4 , an adhesive double coated tape 5 adhered to a rear surface of the substrate sheet 1 , a backing sheet 6 adhered to an outer surface of the adhesive double coated tape 5 , and another adhesive layer 7 and a peel paper 8 on an outer surface of the backing sheet 6 .
- the male surface fastener member is attached to each of opposite sides of the front covering portion 10 of the paper diaper A by the adhesive layer 7 with the peel paper 8 peeled off the adhesive layer 7 .
- the female surface fastener member is attached to each of the attachment strips 12 of the hip covering portion 11 of the paper diaper A by its adhesive layer 7 with the peel paper 8 peeled off.
- FIG. 9 shows a fourth embodiment in which another modified surface fastener is used in a paper diaper A.
- the female surface fastener member is identical with that of the previous embodiment, while the male surface fastener member is different from that of the previous embodiment in that the first substrate sheet 1 and the hook-shaped engaging elements 3 are integrally molded by injection molding using thermoplastic resin.
- the second substrate sheet 2 of each female surface fastener is attached to each of opposite sides of the front covering portion 10 of the paper diaper A by the adhesive layer 7 which is disposed on the rear surface of the second substrate sheet 2 .
- the molded male surface fastener member has on the rear surface of the first substrate sheet 1 an adhesive double coated tape 5 , a backing sheet 6 adhered to an outer surface off the adhesive tape 5 , an adhesive layer 7 and a peel paper 8 on an outer surface of the backing sheet 6 .
- the male surface fastener member is attached to each attachment strip 12 of the hip covering portion 11 of the paper diaper A by the adhesive layer 7 .
- the used paper diaper A is cast off in the same manner as the previous example.
- a surface fastener may be woven or knitted in such a manner that hook-shaped engaging elements 3 and loop-shaped engaging elements 4 are arranged in combination on the front surface of each of the first and second substrate sheets 1 , 2 .
- the resulting surface fastener member can be attached to either of a male or female surface fastener on the paper diaper A.
- the first substrate sheet 1 has on its front surface a multiplicity of first engaging elements 3 , 4 and on its rear surface an adhesive layer 7 to an outer surface of which a peel paper 8 is adhered and partly since the second substrate sheet 2 has on its front surface a multiplicity of second engaging elements 3 , 4 and on its rear surface an adhesive double coated tape 5 to an outer surface of which a backing sheet 6 is adhered and partly since the adhesive strength of the adhesive double coated tape 5 is smaller than that of the adhesive layer 7 , it is possible to separate a garment from the surface fastener with its male and female engaging elements 3 , 4 kept in engagement with one another, thus it is possible to handle the surface fastener very simply especially when used in a disposable paper diaper.
- the substrate sheet 1 , 2 of the female surface fastener member has an adhesive layer 7 while the substrate sheet 2 of the male surface fastener member has an adhesive double coated tape 5 , it is possible to separate a garment at the adhesive double coated tape 5 on the male surface fastener member and to make the surface fastener optimal in view of attachment, strength and handling especially when used in a disposable paper diaper.
- one of the first and second substrate sheets 1 , 2 is woven or knitted and has hook-shaped engaging elements 3 and/or loop-shaped engaging elements 4 , it is possible to separate a garment from the surface fastener easily with male and female engaging elements 3 , 4 kept in engagement with one another and to combine the surface fastener member with any kind of companion surface fastener member.
- hook-shaped engaging elements 3 are molded on the substrate sheet 1 , 2 by injection molding, it is possible to separate a garment simply with male and female engaging elements 3 , 4 kept in engagement with one another.
- the substrate sheet 1 , 2 of one surface fastener member is attached to the front covering portion 10 of the paper diaper A by an adhesive layer 7
- the substrate sheet 1 , 2 of the other surface fastener member is attached to the attachment strip 12 of the hip covering portion 11 of the paper diaper A by an adhesive double coated tape 5
- a backing sheet 6 is adhered at one side surface to the adhesive double coated tape 5 and is adhered at the other side surface to the attachment strips 12 of the hip covering portion 11 by an adhesive layer 7 , it is possible to handle the paper diaper very simply.
Abstract
A surface fastener having a first substrate sheet having on its front surface hook-shaped engaging elements and on its rear surface a low-adhesion adhesive double coated tape to an outer surface of which a backing sheet is adhered, and a second substrate sheet having on its front surface loop-shaped engaging elements and on its rear surface an adhesive layer to an outer surface of which a peel paper is adhered. For attaching the surface fastener to a paper diaper, the adhesive layer of the second substrate sheet is adhered to a front covering portion of the diaper, while the adhesive double coated tape of the first substrate sheet is adhered to an attachment strip of a hip covering portion of the diaper after the backing sheet is peeled off. When casting off the diaper after using, the adhesive double coated tape is separated from the first substrate sheet so as to be left on the attachment strip and then the diaper is folded, whereupon the adhesive double coated tape on the attachment strip is adhered to an outer surface of the folded diaper to wrap up the diaper.
Description
- 1. Description of the Invention
- This invention relates to a surface fastener to be used as a fastener of a disposable paper diaper, the surface fastener being improved in its attaching means so that the paper diaper is easy to handle.
- 2. Description of the Related Art
- FIG. 10 of the accompanying drawings shows a paper diaper fastener which is disclosed in Japanese Utility Model Publication No. Hei 1-29230. In this known fastener, a
plastic substrate tape 1′ has on its one surface anadhesive layer 7′ extending from the center to one end and aprotective peel portion 8′ extending from the center to the other end. On the other surface, theplastic substrate tape 1′ has anotherprotective peel portion 8′ extending from the center to one end and anotheradhesive layer 7′ extending from the center to the other end, which is a reverse arrangement to that on the one surface. Theplastic substrate tape 1′ is attached in a folded form to a paper diaper A′ and, in use, theadhesive layer 7′ is peeled off theprotective peel portion 8′ and is then adhered to a companion attaching section of the diaper A′. - Japanese Patent Laid-Open Publication No. Hei 2-5947 discloses a concept of using a surface fastener SF in a disposable diaper. As shown in FIG. 11, in the surface fastener, a thin strong flexible substrate plate has on its front surface a multiplicity of resilient mushroom-shaped
engaging elements 3″ each having astem 3″b projecting upright from the front surface and around head 3″a at the top of thestem 3″b. This surface fastener is fixed to an end of a flexible elongated rectangular polymer tab and is provided with a low-viscosity pressure-sensitive adhesive agent so that it is kept in a folded form; in use, the surface fastener is unfolded and is then fastened with a companion surface fastener. - According to the first-named conventional diaper fastener in a form of the
plastic tape 1′, since the diaper A′ is fastened by theadhesive layer 7′, it is impossible to fasten the diaper A′ with adequate firmness. Further, theadhesive layer 7′ of theplastic tape 1′ tends to touch the infant's skin which is very delicate when the diaper A′ is in use, so that the infant might suffer atopic dermatitis and other skin disease. - According to the second-named conventional diaper fastener in a form of a surface fastener, since the
engaging elements 3″ of the surface fastener SF have a very special shape, it is inevitable to use a very complicated processing means in manufacturing the surface fastener SF, and there is a danger that the pressure-sensitive adhesive agent on the polymer tab might tough the infant's skin to cause atopic dermatitis or other skin disease when the diaper is in use. - A first object of this invention is to provide a surface fastener which is suitable for a disposable paper diaper and in which either an adhesive layer or an adhesive double coated tape has such a form as not to contact an infant's skin directly and which is easy to handle when the used paper diaper is to be cast off, at which time the used diaper is folded into a compact size and is wrapped in a simple manner.
- A second object of the invention is to provide a surface fastener which is very simple to attach and handle with respect to a paper diaper.
- A third object of the invention is to provide a surface fastener which is shaped into a form suitable for use in a paper diaper in view of relation between the adhesive strength of an adhesive layer and an adhesive double coated tape with respect to the surface fastener and the shape of engaging elements.
- A fourth object of the invention is to provide a surface fastener which has a shape suitable for use in a paper diaper by specifying the surface fastener manufacturing means and shape.
- A fifth object of the invention is to provide a surface fastener of which hook-shaped engaging elements are suitable for a paper diaper by specifying the hook-shaped engaging element manufacturing means.
- A sixth object of the invention is to provide a paper diaper to which a surface fastener is attached in an optimal form and in which the surface fastener has such a shape that an adhesive layer and an adhesive double coated tape will not come into direct contact with an infant's skin.
- A seventh object of the invention is to provide a paper diaper in which a surface fastener can be attached in a simple manner and which can be handled simply when it is to be cast off after using.
- According to a first aspect of the invention, there is provided a surface fastener comprising: a first substrate sheet having on its front surface a multiplicity of first engaging elements and on its rear surface a first adhesive layer; a second substrate sheet having on its front surface a multiplicity of second engaging elements engageable with the first engaging elements and on its rear surface a second adhesive layer; the first adhesive layer having an adhesive strength smaller than that of said second adhesive layer.
- Preferably, the first adhesive layer is an adhesive double coated tape and has on its outer surface a backing sheet adhered thereto, while the second adhesive layer has on its outer surface a peel paper adhered thereto.
- According to a second aspect of the invention, the backing sheet has on its outer surface another adhesive layer to an outer surface of which another peel paper is adhered.
- According to a third aspect of the invention, the second engaging elements of the second substrate sheet on which the first-mentioned adhesive layer is disposed are loop-shaped engaging elements, and the first engaging elements of the first substrate sheet on which the adhesive double coated tape is disposed are hook-shaped engaging elements.
- According to a fourth aspect of the invention, at least one of the first and second substrate sheets is knitted or woven, and the engaging elements of one of the first and second substrate sheets are hook-shaped engaging elements and/or loop-shaped engaging elements.
- According to a fifth aspect of the invention, hook-shaped engaging elements are molded on the front surface of the first substrate sheet by injection molding.
- According to a sixth aspect of the invention, there is provided a paper diaper using a plurality of surface fasteners, comprising a front covering portion and a hip covering portion having a plurality of attachment strips at its opposite sides, each surface fastener comprising: a first substrate sheet having on its front surface a multiplicity of first engaging elements; a second substrate sheet having on its front surface a multiplicity of second engaging elements engageable with the first engaging elements and on its rear surface an adhesive layer adhered to each of the opposite sides of the front covering portion; and an adhesive double coated tape adhered to a rear surf ace of the first substrate sheet with an adhesive strength smaller than that of the adhesive layer, the adhesive double coated tape being adhered to each of the attachment strips of the hip covering portion.
- According to a seventh aspect of the invention, a backing sheet is adhered to an outer surface of the adhesive double coated tape and has on a surface opposite to the tape an additional adhesive layer of which outer surface is adhered to each of the attachment strips of the hip covering portion.
- According to an eighth aspect of the invention, the second engaging elements of each second substrate sheet on which the first-mentioned adhesive layer is disposed are loop-shaped engaging elements, and the first engaging elements of each first substrate sheet on which the adhesive double coated tape is disposed are hook-shaped engaging elements.
- According to a ninth aspect of the invention, the first or second substrate sheet is knitted or woven, and the engaging elements of the first or second substrate sheets are hook-shaped engaging elements and/or loop-shaped engaging elements.
- According to a tenth aspect of the invention, the hook-shaped engaging elements are molded on the front surface of the first substrate sheet by injection molding.
- FIG. 1 is a front view of a surface fastener according to a first embodiment of this invention;
- FIG. 2 is a front view of a modified surface fastener according to a second embodiment of the invention;
- FIG. 3 is a perspective view showing a paper diaper in an opened posture;
- FIG. 4 is a perspective view showing the paper diaper in a fastened posture;
- FIG. 5 is a side view showing one example of use of the surface fastener of FIG. 1;
- FIG. 6 is a side view showing one example of use of the surface fastener of FIG. 2;
- FIG. 7 is a side view showing the manner in which the surface fastener of FIG. 6 is separated;
- FIG. 8 is a side view showing one example of use of another modified surface fastener according to a third embodiment of the invention;
- FIG. 9 is a side view showing one example of use of an injection-molded surface fastener according to a fourth embodiment;
- FIG. 10 is a fragmentary cross-sectional view of a conventional surface fastener used in a paper diaper; and
- FIG. 11 is a fragmentary perspective view of another conventional surface fastener used in a paper diaper.
- Surface fasteners according to preferred embodiments and paper diapers using the surface fasteners will now be described in detail with reference to the accompanying drawings.
- Recently application of surface fasteners, instead of adhesive tapes, to paper diapers has been on the increase. One of the reasons is that many infants having delicate skins suffer atopic dermatitis when they touch the adhesive tapes.
- FIG. 1 shows a surface fastener according to a first embodiment of this invention which is designed in such a manner that an adhesive layer and an adhesive double coated tape would not tough the infant's skin when the surface fastener is used for a paper diaper. In the surface fastener, a male surface fastener member includes a
first substrate sheet 1 having on its front surface a multiplicity of hook-shapedengaging elements 3, an adhesive double coatedtape 5 adhered to a rear surface of thefirst substrate sheet 1, and abacking sheet 6 adhered to an outer surface of thetape 5. A female surface fastener member includes asecond substrate sheet 2 having on its front surface a multiplicity of loop-shapedengaging elements 4, anadhesive layer 7 on a rear surface of thesecond substrate sheet 2, and apeel paper 8 adhered to an outer surface of theadhesive layer 7. - FIG. 2 shows an alternative surface fastener according to a second embodiment of the invention. In the modified surface fastener, a male surface fastener member includes a
first substrate sheet 1 having on its front surface a multiplicity of hook-shapedengaging elements 3, an adhesive double coatedtape 5 on a rear surface of thesubstrate sheet 1, abacking sheet 6 adhered to an outer surface of the adhesive double coatedtape 5, anadhesive layer 7 on an outer surface of thebacking sheet 6, and apeel taper 8 adhered to an outer surface of theadhesive layer 7. In the meantime, a female surface fastener member includes asecond substrate sheet 2 having on its front surface a multiplicity of loop-shapedengaging elements 4, anadhesive layer 7 on a rear surface of thesubstrate sheet 2, apeel paper 8 adhered to an outer surface of theadhesive layer 7. - In the foregoing surface fasteners, the first and
second substrate sheets engaging elements 3 are formed from monofilament while the loop-shapedengaging elements 4 are formed from multifilament. Thebacking sheet 6 is made of thermoplastic resin. The adhesive double coatedtape 5 and theadhesive layer 7 are made of rubber resin, acrylic resin, etc. The adhesive double coatedtape 5 has an adhesive strength smaller than that of theadhesive layer 7. - FIGS. 3 and 4 respectively shows an example in which the foregoing surface fasteners are used in a paper diaper A. A pair of female surface fastener members are attached to the outer surface of a
front covering portion 10 of the paper diaper A at its opposite sides, while a pair of male surface fastener members are attached to inner surfaces of a pair ofattachment strips 12 fixed to opposite sides of ahip covering portion 11 of the paper diaper A. - FIG. 5 shows one example in which the surface fastener of FIG. 1 is used in a paper diaper A. In this example, the
second substrate sheet 2 of each female surface fastener is attached to each of opposite sides of thefront covering portion 10 of the paper diaper A as shown in FIG. 5 by theadhesive layer 7 with thepeel paper 8 peeled off the rear surface thereof. In the meantime, thefirst substrate sheet 1 of each male surface fastener of FIG. 1 is adhered to each of the attachment strips 12 of thehip covering portion 11 of the paper diaper A by the adhesive doublecoated tape 5 with thebacking sheet 6 peeled off the rear surface thereof. In using the diaper A, the hook-shapedengaging elements 3 of thefirst substrate sheet 1 are brought into engagement with the loop-shapedengaging elements 4 of thesecond substrate sheet 2 as the female surface fastener is pressed against the corresponding male surface fastener. In an alternative form, a pair ofbacking sheets 6 may be attached directly to thehip covering portion 11 for substitution for the attachment strips 12. - For casting off the paper diaper A after using, with the hook-shaped
engaging elements 3 kept in engagement with the loop-shapedengaging elements 4, eachattachment strip 12 is pulled outwardly so as that the adhesive doublecoated tape 5 is peeled off thefirst substrate sheet 1 and hence stay on theattachment strip 12, and then the paper diaper A is folded, whereupon the paper diaper A is wrapped in a compact size by adhering the adhesive doublecoated tapes 5 of the attachment strips 12 to the outer surface of the folded paper diaper A at some positions thereof. - FIGS. 6 and 7 respectively shows another example in which the surface fastener of FIG. 2 is used in a paper diaper A. In this example, the
second substrate sheet 2 of each female surface fastener member is attached to each of opposite sides of thefront covering portion 10 of the paper diaper A by theadhesive layer 7 with thepeel paper 8 peeled off. In the meantime, thefirst substrate sheet 1 of each male surface fastener member is attached to each of the attachment strips 12 of thehip covering portion 11 of the paper diaper A by theadhesive layer 7 with thepeel paper 8 peeled off. - For casting off the paper diaper A after using, one end of the
attachment strip 12 is pulled outwardly to separate the adhesive doublecoated tape 5 from thefirst substrate sheet 1 so as to stay on thebacking sheet 6. After it is folded, the paper diaper A is wrapped by adhering the separated attachment strips 12 to the outer surface of the folded paper diaper A at some positions. - FIG. 8 shows a third embodiment in which a modified surface fastener is used in a paper diaper A. In this modified surface fastener, the male surface fastener member includes a
second substrate sheet 2 having on its front surface a multiplicity of hook-shapedengaging elements 3, anadhesive layer 7 on a rear surface of thesecond substrate sheet 2, and apeel paper 8 adhered to an outer surface of the adhesive layer, while the female surface fastener member includes afirst substrate sheet 1 having on its front surface a multiplicity of loop-shapedengaging elements 4, an adhesive doublecoated tape 5 adhered to a rear surface of thesubstrate sheet 1, abacking sheet 6 adhered to an outer surface of the adhesive doublecoated tape 5, and anotheradhesive layer 7 and apeel paper 8 on an outer surface of thebacking sheet 6. The male surface fastener member is attached to each of opposite sides of thefront covering portion 10 of the paper diaper A by theadhesive layer 7 with thepeel paper 8 peeled off theadhesive layer 7. In the meantime, the female surface fastener member is attached to each of the attachment strips 12 of thehip covering portion 11 of the paper diaper A by itsadhesive layer 7 with thepeel paper 8 peeled off. - FIG. 9 shows a fourth embodiment in which another modified surface fastener is used in a paper diaper A. In this modified surface fastener, the female surface fastener member is identical with that of the previous embodiment, while the male surface fastener member is different from that of the previous embodiment in that the
first substrate sheet 1 and the hook-shapedengaging elements 3 are integrally molded by injection molding using thermoplastic resin. For attaching the modified surface fastener to the paper diaper A, likewise in the previous example, thesecond substrate sheet 2 of each female surface fastener is attached to each of opposite sides of thefront covering portion 10 of the paper diaper A by theadhesive layer 7 which is disposed on the rear surface of thesecond substrate sheet 2. - The molded male surface fastener member has on the rear surface of the
first substrate sheet 1 an adhesive doublecoated tape 5, abacking sheet 6 adhered to an outer surface off theadhesive tape 5, anadhesive layer 7 and apeel paper 8 on an outer surface of thebacking sheet 6. In use, with thepeel paper 8 peeled off, the male surface fastener member is attached to eachattachment strip 12 of thehip covering portion 11 of the paper diaper A by theadhesive layer 7. The used paper diaper A is cast off in the same manner as the previous example. - In manufacturing a surface fastener by weaving or knitting, a surface fastener may be woven or knitted in such a manner that hook-shaped
engaging elements 3 and loop-shapedengaging elements 4 are arranged in combination on the front surface of each of the first andsecond substrate sheets - The foregoing surface fasteners and the foregoing paper diapers using the surface fasteners have the following advantageous results:
- According to a first aspect of the invention, partly since the
first substrate sheet 1 has on its front surface a multiplicity of firstengaging elements adhesive layer 7 to an outer surface of which apeel paper 8 is adhered and partly since thesecond substrate sheet 2 has on its front surface a multiplicity of secondengaging elements coated tape 5 to an outer surface of which abacking sheet 6 is adhered and partly since the adhesive strength of the adhesive doublecoated tape 5 is smaller than that of theadhesive layer 7, it is possible to separate a garment from the surface fastener with its male and femaleengaging elements - According to a second aspect of the invention, since an
adhesive layer 7 and apeel paper 8 are disposed on thebacking sheet 6 on a side opposite to the adhesive doublecoated tape 5, it is possible to handle the surface fastener much more simply especially when used in a disposable paper diaper. - According to a third aspect of the invention, since the
substrate sheet adhesive layer 7 while thesubstrate sheet 2 of the male surface fastener member has an adhesive doublecoated tape 5, it is possible to separate a garment at the adhesive doublecoated tape 5 on the male surface fastener member and to make the surface fastener optimal in view of attachment, strength and handling especially when used in a disposable paper diaper. - According to a fourth aspect of the invention, since one of the first and
second substrate sheets engaging elements 3 and/or loop-shapedengaging elements 4, it is possible to separate a garment from the surface fastener easily with male and femaleengaging elements - According to a fifth aspect of the invention, since the hook-shaped
engaging elements 3 are molded on thesubstrate sheet engaging elements - According to a sixth aspect of the invention, partly since the
substrate sheet front covering portion 10 of the paper diaper A by anadhesive layer 7, and partly since thesubstrate sheet attachment strip 12 of thehip covering portion 11 of the paper diaper A by an adhesive doublecoated tape 5, it is possible to separate a garment with male and femaleengaging elements adhesive layer 7 or the adhesive doublecoated tape 5 from directly touching the infant's skin so that the infant's is kept free from skin diseases such as atopic dermatitis. - According to a seventh aspect of the invention, since a
backing sheet 6 is adhered at one side surface to the adhesive doublecoated tape 5 and is adhered at the other side surface to the attachment strips 12 of thehip covering portion 11 by anadhesive layer 7, it is possible to handle the paper diaper very simply.
Claims (11)
1. A surface fastener comprising:
(a) a first substrate sheet having front and rear surfaces, the first substrate sheet having on its front surface a multiplicity of first engaging elements and on its rear surface a first adhesive layer;
(b) a second substrate sheet having front and rear surfaces, the second substrate sheet having on its front surface a multiplicity of second engaging elements engageable with said first engaging elements and on its rear surface a second adhesive layer;
(c) the first adhesive layer having an adhesive strength smaller than that of said second adhesive layer and smaller than an engaging strength of the first and second engaging elements when the first and second engaging elements are engaged with each other.
2. A surface fastener according to , wherein said first adhesive layer is an adhesive double coated tape having an outer surface, the outer surface of the tape having a backing sheet adhered thereto, and said second adhesive layer having an outer surface which has a peel paper adhered thereto.
claim 1
3. A surface fastener according to , wherein said backing sheet has an outer surface having another adhesive layer thereon which adhesive layer has an outer surface to which another peel paper is adhered.
claim 2
4. A surface fastener according to or , wherein said second engaging elements of said second substrate sheet on which the second adhesive layer is disposed are loop-shaped engaging elements, and said first engaging elements of said first substrate sheet on which said first adhesive layer is disposed are hook-shaped engaging elements.
claim 1
2
5. A surface fastener according to or , wherein at least one of said first and second substrate sheets is knitted or woven, and said engaging elements of one of said first and second substrate sheets are hook-shaped engaging elements and/or loop-shaped engaging elements.
claim 1
2
6. A surface fastener according to , wherein hook-shaped engaging elements are molded on said front surface of said first substrate sheet by injection molding.
claim 4
7. A paper diaper comprising:
a unitary diaper body having a front covering portion having opposite free sides and a hip covering portion having opposite free sides, said hip covering portion having two attachment strips respectively disposed at said opposite sides, and two surface fasteners respectively releasably fastening said opposite free sides of said front covering portion to said opposite free sides of said hip covering portion, each of said fasteners comprising:
(a) a first substrate sheet having front and rear surfaces, the first substrate sheet having on its front surface a multiplicity of first engaging elements;
(b) a second substrate sheet having front and rear surfaces, the second substrate sheet having on its front surface a multiplicity of second engaging elements engageable with said first engaging elements and on its rear surface an adhesive layer adhered to one of said opposite free sides of said front covering portion; and
(c) an adhesive double coated tape adhered to the rear surface of said first substrate sheet with an adhesive strength smaller than that of said adhesive layer and smaller than an engaging strength of the first and second engaging elements when the first and second engaging elements are engaged with each other, said adhesive double coated tape being adhered to one of said attachment strips of said hip covering portion.
8. A paper diaper according to , further including a backing sheet adhered to an outer surface of said adhesive double coated tape, an additional adhesive layer on a surface of the backing sheet opposite to the tape, and an outer surface of said additional adhesive layer adhered to each of said attachment strips of said hip covering portion.
claim 7
9. A paper diaper according to , wherein said second engaging elements of each said second substrate sheet on which the first-mentioned adhesive layer is disposed are loop-shaped engaging elements, and said first engaging elements of each said first substrate sheet on which said adhesive double coated tape is disposed are hook-shaped engaging elements.
claim 7
10. A paper diaper according to , wherein at least one of said first and second substrate sheets is knitted or woven, and said engaging elements of one of said first and second substrate sheets are hook-shaped engaging elements and/or loop-shaped engaging elements.
claim 7
11. A paper diaper according to , wherein said hook-shaped engaging elements are molded on said front surface of each said first substrate sheet by injection molding.
claim 9
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US09/300,640 US6419668B2 (en) | 1996-09-30 | 1999-04-27 | Surface fastener and paper diaper using the surface fastener |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8-259257 | 1996-09-30 | ||
JP25925796A JP3423545B2 (en) | 1996-09-30 | 1996-09-30 | Surface fastener and disposable diaper using the surface fastener |
US93895697A | 1997-09-26 | 1997-09-26 | |
US09/300,640 US6419668B2 (en) | 1996-09-30 | 1999-04-27 | Surface fastener and paper diaper using the surface fastener |
Related Parent Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US93895697A Continuation-In-Part | 1996-09-30 | 1997-09-26 |
Publications (2)
Publication Number | Publication Date |
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US20010018581A1 true US20010018581A1 (en) | 2001-08-30 |
US6419668B2 US6419668B2 (en) | 2002-07-16 |
Family
ID=26544037
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US09/300,640 Expired - Fee Related US6419668B2 (en) | 1996-09-30 | 1999-04-27 | Surface fastener and paper diaper using the surface fastener |
Country Status (1)
Country | Link |
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US (1) | US6419668B2 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20050027279A1 (en) * | 2003-07-30 | 2005-02-03 | Uni-Charm Corporation | Disposable diaper |
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JP2012016581A (en) * | 2010-06-08 | 2012-01-26 | Livedo Corporation | Body wearing article |
US9872792B2 (en) | 2012-02-10 | 2018-01-23 | Ossur Hf | Wrist brace and method and components for securing the same |
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US3353663A (en) | 1966-02-10 | 1967-11-21 | Minnesota Mining & Mfg | Adherent fasteners |
US3370818A (en) | 1966-06-28 | 1968-02-27 | Herbert M. Perr | Fabric type fastening means |
US3620217A (en) | 1970-03-18 | 1971-11-16 | Procter & Gamble | Disposable diaper having pressure-sensitive tape fastener and built-in disposal fastener |
US4043340A (en) | 1976-02-27 | 1977-08-23 | Johnson & Johnson | Diaper with repositionable tab fastener |
US4186744A (en) | 1976-07-29 | 1980-02-05 | Johnson & Johnson | Separability member to allow disposable diaper openings and re-fastenings |
US4322875A (en) | 1980-03-31 | 1982-04-06 | Minnesota Mining And Manfacturing Company | Two strip materials used for forming fasteners |
US4299223A (en) * | 1980-05-21 | 1981-11-10 | 3 Sigma Inc. | Tape tab fastener for disposable diaper |
US4523333A (en) | 1983-11-04 | 1985-06-18 | The Procter & Gamble Company | Disposable bib having tape-tab fastener |
US4699622A (en) | 1986-03-21 | 1987-10-13 | The Procter & Gamble Company | Disposable diaper having an improved side closure |
US4706914A (en) | 1986-07-25 | 1987-11-17 | Minnesota Mining And Manufacturing Company | Attaching assembly |
JPS6429230A (en) | 1987-07-27 | 1989-01-31 | Hitachi Heating Appl | High frequency heating apparatus |
FR2624353B1 (en) | 1987-12-09 | 1990-05-18 | Celatose Sa | PANTIES |
US4869724A (en) | 1987-12-17 | 1989-09-26 | The Procter & Gamble Company | Mechanical fastening systems with adhesive tape disposal means for disposable absorbent articles |
US4894060A (en) | 1988-01-11 | 1990-01-16 | Minnesota Mining And Manufacturing Company | Disposable diaper with improved hook fastener portion |
US5176670A (en) | 1988-12-20 | 1993-01-05 | Kimberly-Clark Corporation | Disposable diaper with improved mechanical fastening system |
US5176671A (en) | 1988-12-20 | 1993-01-05 | Kimberly-Clark Corporation | Fastening system for disposable diaper with disposability feature |
DE4010567A1 (en) | 1990-04-02 | 1991-10-10 | Koester Kg | Nappy with adhesive zones - to join front and rear parts, each zone formed out of double-sided adhesive tape |
CA2021538A1 (en) | 1990-07-19 | 1992-01-20 | Joseph Elchakieh | Reusable diaper with separate fastener |
US5462540A (en) | 1992-03-02 | 1995-10-31 | Avery Dennison Corporation | Tabless diaper with a multi-component tape fastener |
DE69403644T3 (en) | 1993-04-16 | 2004-01-29 | Minnesota Mining & Mfg | ARRANGEMENT FOR THE STORAGE / DELIVERY OF ADHESIVE SEALING MATERIAL |
WO1995003723A1 (en) | 1993-07-27 | 1995-02-09 | Minnesota Mining And Manufacturing Company | Fastener member with a dual purpose cover sheet |
JP2895403B2 (en) | 1994-09-30 | 1999-05-24 | ワイケイケイ株式会社 | Curtain mountings |
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JPH10117815A (en) * | 1996-08-30 | 1998-05-12 | Ykk Corp | Hook and loop fastener band and its production |
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US20050027279A1 (en) * | 2003-07-30 | 2005-02-03 | Uni-Charm Corporation | Disposable diaper |
US7156829B2 (en) * | 2003-07-30 | 2007-01-02 | Uni-Charm Corporation | Disposable diaper having elasticized wings and waistband |
Also Published As
Publication number | Publication date |
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US6419668B2 (en) | 2002-07-16 |
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