CN104884015B - Breeches type disposable diaper and its manufacturing method - Google Patents

Breeches type disposable diaper and its manufacturing method Download PDF

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Publication number
CN104884015B
CN104884015B CN201380068555.3A CN201380068555A CN104884015B CN 104884015 B CN104884015 B CN 104884015B CN 201380068555 A CN201380068555 A CN 201380068555A CN 104884015 B CN104884015 B CN 104884015B
Authority
CN
China
Prior art keywords
diaper
exterior body
side seal
seal portion
type disposable
Prior art date
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.)
Active
Application number
CN201380068555.3A
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Chinese (zh)
Other versions
CN104884015A (en
Inventor
铃木大也
浜本伸二
今井康至
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Kao Corp
Original Assignee
Kao Corp
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Filing date
Publication date
Application filed by Kao Corp filed Critical Kao Corp
Publication of CN104884015A publication Critical patent/CN104884015A/en
Application granted granted Critical
Publication of CN104884015B publication Critical patent/CN104884015B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS 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
    • A61F13/00Bandages or dressings; Absorbent pads
    • A61F13/15Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/15577Apparatus or processes for manufacturing
    • A61F13/15804Plant, e.g. involving several steps
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS 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
    • A61F13/00Bandages or dressings; Absorbent pads
    • A61F13/15Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/45Absorbent 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
    • A61F13/49Absorbent articles specially adapted to be worn around the waist, e.g. diapers
    • A61F13/496Absorbent articles specially adapted to be worn around the waist, e.g. diapers in the form of pants or briefs
    • A61F13/4963Absorbent articles specially adapted to be worn around the waist, e.g. diapers in the form of pants or briefs characterized by the seam
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/14Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using wave energy, i.e. electromagnetic radiation, or particle radiation
    • B29C65/16Laser beams
    • B29C65/1629Laser beams characterised by the way of heating the interface
    • B29C65/1648Laser beams characterised by the way of heating the interface radiating the edges of the parts to be joined
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/14Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using wave energy, i.e. electromagnetic radiation, or particle radiation
    • B29C65/16Laser beams
    • B29C65/1629Laser beams characterised by the way of heating the interface
    • B29C65/1654Laser beams characterised by the way of heating the interface scanning at least one of the parts to be joined
    • B29C65/1661Laser beams characterised by the way of heating the interface scanning at least one of the parts to be joined scanning repeatedly, e.g. quasi-simultaneous laser welding
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/14Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using wave energy, i.e. electromagnetic radiation, or particle radiation
    • B29C65/16Laser beams
    • B29C65/1696Laser beams making use of masks
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/74Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by welding and severing, or by joining and severing, the severing being performed in the area to be joined, next to the area to be joined, in the joint area or next to the joint area
    • B29C65/747Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by welding and severing, or by joining and severing, the severing being performed in the area to be joined, next to the area to be joined, in the joint area or next to the joint area using other than mechanical means
    • B29C65/7473Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by welding and severing, or by joining and severing, the severing being performed in the area to be joined, next to the area to be joined, in the joint area or next to the joint area using other than mechanical means using radiation, e.g. laser, for simultaneously welding and severing
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00General aspects of processes or apparatus for joining preformed parts
    • B29C66/01General aspects dealing with the joint area or with the area to be joined
    • B29C66/05Particular design of joint configurations
    • B29C66/10Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/11Joint cross-sections comprising a single joint-segment, i.e. one of the parts to be joined comprising a single joint-segment in the joint cross-section
    • B29C66/112Single lapped joints
    • B29C66/1122Single lap to lap joints, i.e. overlap joints
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00General aspects of processes or apparatus for joining preformed parts
    • B29C66/70General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/72General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the structure of the material of the parts to be joined
    • B29C66/723General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the structure of the material of the parts to be joined being multi-layered
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00General aspects of processes or apparatus for joining preformed parts
    • B29C66/70General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/72General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the structure of the material of the parts to be joined
    • B29C66/729Textile or other fibrous material made from plastics
    • B29C66/7294Non woven mats, e.g. felt
    • B29C66/72941Non woven mats, e.g. felt coated
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00General aspects of processes or apparatus for joining preformed parts
    • B29C66/80General aspects of machine operations or constructions and parts thereof
    • B29C66/83General aspects of machine operations or constructions and parts thereof characterised by the movement of the joining or pressing tools
    • B29C66/834General aspects of machine operations or constructions and parts thereof characterised by the movement of the joining or pressing tools moving with the parts to be joined
    • B29C66/8341Roller, cylinder or drum types; Band or belt types; Ball types
    • B29C66/83431Roller, cylinder or drum types; Band or belt types; Ball types rollers, cylinders or drums cooperating with bands or belts
    • B29C66/83433Roller, cylinder or drum types; Band or belt types; Ball types rollers, cylinders or drums cooperating with bands or belts the contact angle between said rollers, cylinders or drums and said bands or belts being a non-zero angle
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00General aspects of processes or apparatus for joining preformed parts
    • B29C66/80General aspects of machine operations or constructions and parts thereof
    • B29C66/83General aspects of machine operations or constructions and parts thereof characterised by the movement of the joining or pressing tools
    • B29C66/834General aspects of machine operations or constructions and parts thereof characterised by the movement of the joining or pressing tools moving with the parts to be joined
    • B29C66/8341Roller, cylinder or drum types; Band or belt types; Ball types
    • B29C66/83431Roller, cylinder or drum types; Band or belt types; Ball types rollers, cylinders or drums cooperating with bands or belts
    • B29C66/83435Roller, cylinder or drum types; Band or belt types; Ball types rollers, cylinders or drums cooperating with bands or belts said rollers, cylinders or drums being hollow
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS 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
    • A61F13/00Bandages or dressings; Absorbent pads
    • A61F13/15Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/84Accessories, not otherwise provided for, for absorbent pads
    • A61F2013/8497Accessories, not otherwise provided for, for absorbent pads having decorations or indicia means
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/14Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using wave energy, i.e. electromagnetic radiation, or particle radiation
    • B29C65/16Laser beams
    • B29C65/1603Laser beams characterised by the type of electromagnetic radiation
    • B29C65/1612Infrared [IR] radiation, e.g. by infrared lasers
    • B29C65/1619Mid infrared radiation [MIR], e.g. by CO or CO2 lasers
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00General aspects of processes or apparatus for joining preformed parts
    • B29C66/01General aspects dealing with the joint area or with the area to be joined
    • B29C66/05Particular design of joint configurations
    • B29C66/10Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/13Single flanged joints; Fin-type joints; Single hem joints; Edge joints; Interpenetrating fingered joints; Other specific particular designs of joint cross-sections not provided for in groups B29C66/11 - B29C66/12
    • B29C66/137Beaded-edge joints or bead seals
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00General aspects of processes or apparatus for joining preformed parts
    • B29C66/70General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/71General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the composition of the plastics material of the parts to be joined
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00General aspects of processes or apparatus for joining preformed parts
    • B29C66/70General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/73General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset
    • B29C66/739General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset
    • B29C66/7392General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of at least one of the parts being a thermoplastic
    • B29C66/73921General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of at least one of the parts being a thermoplastic characterised by the materials of both parts being thermoplastics
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29LINDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00Other particular articles
    • B29L2031/48Wearing apparel
    • B29L2031/4871Underwear
    • B29L2031/4878Diapers, napkins

Abstract

The present invention provides a kind of Breeches type disposable diaper, the diaper (50B) of the present invention includes absorbent main body (2) and exterior body (3) being configured at the non-skin abutment face side of the absorbent main body (2), fixing the absorbent main body (2), and the left and right sides edge of the exterior body (3) of predecessor (F) and the left and right sides edge of the exterior body (3) of rear body (R) are engaged and form a pair of of side seal portion (4 by the Breeches type disposable diaper, 4), waist opening portion (8) and a pair of of leg opening part (9,9).Visuality of the side seal portion (4) when diaper (50B) is worn by visual observation is low, and there is the visual visual side seal portion visuality for improving side seal portion (4) to improve mechanism (difference of height) (53) near side seal portion (4).

Description

Breeches type disposable diaper and its manufacturing method
Technical field
The present invention relates to the Breeches type disposable diapers with side seal portion.
Background technology
Currently, as Breeches type disposable diaper, extensively using diaper as described below, i.e.,:Including absorbent main body and It is configured at the non-skin abutment face side of the absorbent main body and fixes the exterior body of the absorbent main body, and engage the left and right of predecessor The left and right sides edge of both side edges and rear body and form a pair of of side seal portion, waist opening portion and a pair of of leg opening part.
In general, when taking Breeches type disposable diaper from the body of wearer, it is preceding to tear the diaper in side seal portion Body and rear body, in order not to adhering to the dirts such as excreta on the body of wearer when being replaced after diaper use, need rapidly from The diaper after use is taken on body, it is therefore preferable that side seal portion can be easy to tear longitudinally.About the tearing property in side seal portion, Such as record in patent document 1, it is torn from the enough bond strengths and raising for taking into account the degree not fallen off in diaper dress The viewpoints such as both broken property are set out, and make that there are 3 grades of bond strengths in side seal portion.
In addition always, in the manufacturing process of the absorbent commodities such as disposable diaper and sanitary napkin, the piece of overlapping Extensively using heat roller device when being engaged with each other, in general, side seal portion is formed using heat roller device as be described hereinafter.In addition, as others Joint method, it is also known that the method for carrying out welding using laser.Such as it is recorded in patent document 2 and makes to be overlapped multiple pieces Laminated body is deformed into be conveyed along the shape of the circumferential surface in rotating roller of the circumferential surface with laser-transmissible portion, and from Laser, the method for making the piece in the laminate be fused to each other are irradiated in the inside of the rotating roller to the laminate.
Breeches type disposable diaper is usually manufactured through following process.That is, manufacturing multiple diapers (conveying side in one direction To) connected diaper non-individual body (for example, diaper non-individual body shown in the symbol 10 of Fig. 5), pass through the engagement devices such as heat roller device By the predecessor (exterior body that forms predecessor) overlapped in the predetermined position for forming side seal portion of the diaper non-individual body and rear body It is interconnected after (exterior body of body after formation), later by cutting off the joint portion with disconnecting devices such as cutting machines, and cuts into Each diaper manufactures above-mentioned Breeches type disposable diaper by above-mentioned operation.The existing pants-type disposable urine manufactured in this way The side seal portion (passing through the cut-out edge at the above-mentioned joint portion that the cut-out carried out with above-mentioned disconnecting device generates) of cloth, the left side of predecessor The left and right sides edge of right both side edges and rear body overlaps to form as herringbone (shape of putting the palms together before one), the top of the gable portion and peripheral portion Compared to protruding outward, so can readily recognize by visual observation.
In the manufacturing process of above-mentioned Breeches type disposable diaper, implementing urine using heat sources such as laser, heating crimping In the case of the cut-out of cloth non-individual body, diaper non-individual body is cut off (fusing) into each monomer, while being generated by the cut-out The cut-out edge of multiple exterior bodies is fused to each other, and is continuously manufactured by the Breeches type disposable diaper with a pair of of side seal portion.Through It crosses while implementing people obtained from side seal portion obtained from the process of such cut-out and welding, with the above-mentioned manufacturing process of process The side seal portion of font compares, and the engaged width between exterior body is narrow, so improving the wearing feeling of diaper, on the other hand, such as Lambdoid side seal portion, because not to being protrudedly formed on the outside of diaper, so the wearing effect or nature in diaper (are received Contracting state) under visual visuality it is low, have be difficult to identify by visual observation its there are the case where.In particular, when diaper is worn, such as The visual visuality in fruit side seal portion is low, then for example after diaper use, the Protector of the infant as wearer (such as it is female Parent) when taking diaper from infant, it is difficult to side seal portion is found, the time may be spent when diaper takes operation.1 He of patent document Side seal portion and wherein intrinsic project obtained from this process passed through while implementing cut-out and welding are not recorded in 2.
Existing technical literature
Patent document
Patent document 1:Japanese Unexamined Patent Publication 2001-120595 bulletins
Patent document 2:Japanese Unexamined Patent Publication 2010-188629 bulletins
Invention content
The present invention provides a kind of Breeches type disposable diaper comprising absorbent main body and is configured at the absorbent main body Non- skin abutment face side and the exterior body for fixing the absorbent main body, the Breeches type disposable diaper is by the exterior body of predecessor Left and right sides edge and rear body the exterior body the left and right sides edge engagement and be formed with a pair of of side seal portion, waist opening portion With a pair of of leg opening part.The side seal portion has the visuality visual when the diaper is worn near the side seal portion Visual visual side seal portion visuality that is low, can improving the side seal portion improves mechanism.
In addition, the present invention provides a kind of manufacturing method of the Breeches type disposable diaper, this method includes:Main body is fixed Process fixes the absorbent main body in the band-like exterior body;Pressurization operation is overlapped, makes to secure the absorbent main body The band-like exterior body predecessor side and rear body stress to fold, make the predetermined position for forming side seal portion of the exterior body of overlapping As pressurized state;With side seal portion formation process, cutting is in the predetermined position in the formation side seal portion of pressurized state, simultaneously The cut-out edge by multiple exterior bodies in pressurized state that the cut-out generates is set to be fused to each other described to be formed Side seal portion.Until before to the side seal portion, formation process terminates after the main body fixed step, set in the exterior body It sets side seal portion visuality and improves mechanism.
Description of the drawings
Fig. 1 can be applicable in the manufacturing method of the Breeches type disposable diaper of the present invention, laser type has been used to connect Attach together the approximate stereogram of an example of the manufacturing method for the Breeches type disposable diaper set.
Fig. 2 is to show schematically Breeches type disposable diaper (this manufactured by the implementation of manufacturing method shown in FIG. 1 Breeches type disposable diaper outside the range of invention) stereogram.
Fig. 3 is the sectional view for the I-I line sections for showing schematically Fig. 2.
Fig. 4 is the expansion for showing schematically diaper shown in Fig. 2 and the vertical view of elongation state.
Fig. 5 is the stereogram for the manufacturing process for showing schematically diaper non-individual body shown in FIG. 1.
Fig. 6 is planar development and shows schematically that diaper non-individual body is imported into the shape of laser type engagement device shown in FIG. 1 The figure of state, Fig. 6 (a) are the upward views for splitting the part for indicating pressing component, and Fig. 6 (b) is the II-II line section views of Fig. 6 (a) Figure.
Fig. 7 (a)~Fig. 7 (c) is to illustrate to cut off diaper non-individual body (band using laser type engagement device shown in FIG. 1 respectively The laminate of shape) while the case where forming side seal portion (sealing edge) definition graph.
Fig. 8 be the state for expanding the waist opening portion of diaper shown in Fig. 3 unilateral side seal portion and its near Sectional view.
Fig. 9 (a) and Fig. 9 (b) is the first embodiment for showing schematically the Breeches type disposable diaper of the present invention respectively Major part, that is, joint portion and protruding portion (side seal portion visuality improve mechanism) and the figure near them, Fig. 9 (a) be the The stereogram of the nature (contraction state) of the diaper of one embodiment, Fig. 9 (b) are the waist opening portions for expanding the diaper State (wearing effect) under stereogram.
Figure 10 is figure (the signal earth's surface for being equivalent to Fig. 2 of the second embodiment of the Breeches type disposable diaper of the present invention Show the stereogram of the state of diaper from the predecessor side of diaper).
Figure 11 (a)~Figure 11 (c) is the definition graph of the manufacturing process of diaper shown in Fig. 10 respectively, with Figure 11 (a) and figure 11 (c) indicates that (method a) indicates another process (method b) to a process with Figure 11 (b) and Figure 11 (c).
Figure 12 is that the major part of the third embodiment of the Breeches type disposable diaper of the present invention marks that (side seal portion can Mechanism is improved depending on property) and schematical front view near it.
Figure 13 is be schematically illustrated at the composite extensible member used as exterior body in diaper shown in Figure 12 one The stereogram divided.
Figure 14 is the definition graph of the formation process marked shown in Figure 12.
Figure 15 (a)~Figure 15 (d) is the master for the third embodiment for indicating the Breeches type disposable diaper of the present invention respectively It to be partly the figure for being equivalent to Figure 12 of the other examples of label (side seal portion visuality improves mechanism).
Specific implementation mode
The present invention relates to the visual visuality in side seal portion high Breeches type disposable diapers and its manufacturing method.
One of the main feature of the present invention is that Breeches type disposable diaper includes absorbent main body and is configured at the absorption The non-skin abutment face side of property main body and the exterior body for fixing the absorbent main body, and by the left and right sides edge of predecessor and rear body The engagement of left and right sides edge and be formed with a pair of of side seal portion, waist opening portion and a pair of of leg opening part, wherein using can carry The visual visual side seal portion visuality in high side seal portion improves mechanism.The side seal portion visuality improves the use of mechanism under In the case of stating especially effectively, i.e.,:It is (band-like in diaper non-individual body in the manufacturing process of Breeches type disposable diaper as above-mentioned Exterior body) the predetermined portion predetermined position of portion (formed side seal) such as irradiating laser, by diaper non-individual body (band-like exterior Body) it is cut to each monomer, while the cut-out edge of the multiple exterior bodies generated by the cut-out being fused to each other, and formed A pair of of side seal portion.It is this " by the same the process of cut-out and the welding of implementing exterior body obtained from side seal portion ", worn in diaper (wearing effect) visual visuality is low when, in particular, from the viewpoint of tearing the side seal portion to take diaper, adopts Mechanism is improved with side seal portion visuality, the visual visuality for improving side seal portion when diaper is worn is effective.In addition, this The side seal portion of sample is also the low side seal portion of visual visuality under the nature (contraction state) of diaper, so in order to see clearly The front and back and left and right of diaper when wearing, improves mechanism, to improve the nature of diaper (before dress using side seal portion visuality Contraction state) under the visual visuality in the side seal portion be effective.Hereinafter, first, to being capable of side using the present invention The basic fundamental that envelope portion visuality improves mechanism illustrates, and then, improves mechanism to the side seal portion visuality and illustrates.Make The side seal portion visuality for not having the present invention for the aftermentioned diaper 1 that basic fundamental illustrates improves mechanism, is of the invention Diaper outside range.
(basic fundamental)
Fig. 1 shows the manufacturing method that can be suitable for the invention Breeches type disposable diaper, used laser type to connect Attach together the outline of the manufacturing method for the Breeches type disposable diaper set.As the manufacturing method for having used the laser type engagement device Manufacturing purpose object diaper 1, as shown in Figure 2 to 4, including absorbent main body 2 and be configured at the non-flesh of the absorbent main body 2 Skin abuts surface side and fixes the exterior body 3 of the absorbent main body 2, and by predecessor F (veutro portion 1A) along the vertical of exterior body 3 To longitudinal X along exterior body 3 of left and right sides edge A1, A1 and rear body R (drosal part 1B) of X left and right sides edge B1, B1 is engaged and is formed with a pair of of side seal portion 4,4, waist opening portion 8 and a pair of of leg opening part 9,9.Side seal portion 4 is multiple exteriors The edge of body 3 in the state of overlapping welding and formed.The width in side seal portion is 5mm hereinafter, or being 3mm hereinafter, or being 2mm Below.
Diaper 1 has in the vertical view of expansion as shown in Figure 4 and elongation state and is equivalent to the in the front-back direction of wearer Longitudinal X and orthogonal to that lateral Y.Diaper 1 can be divided into the crotch 1C for being configured at crotch when wearing and positioned at above-mentioned longitudinal direction X's Front and back veutro portion 1A and drosal part 1B.Crotch 1C is to be formed with leg opening part in the left and right sides edge along longitudinal direction X 9, the region of the notch section of 9 formation.In addition, diaper 1 is as shown in figure 4, with will be in the imagination that X is divided into two along longitudinal direction of diaper 1 Heart line CL is boundary, can divide into predecessor F and rear body R.
In addition, in the present specification, skin abutment face is disposable diaper or its component parts (such as absorbent main body 2) When disposable diaper is worn towards the face of the skin side of wearer, non-skin abutment face is disposable diaper or its constituting portion Part when disposable diaper is worn towards the face of the opposite side of skin side (side of wearing the clothes).In addition, longitudinal direction X with along disposable urine The direction (length direction) of the long side of cloth or absorbent main body 2 as its component parts unanimously, lateral Y and disposable diaper or The width direction of absorbent main body 2 as its component parts is consistent.
As shown in figure 4, there are one the shapes of direction (longitudinal X) relatively long lengthwise for the tool of absorbent main body 2, and include: Form the positive dough sheet (not shown) of skin abutment face;Form the back sheet (not shown) of non-skin abutment face;And between this two panels The absorber (not shown) of the liquid retentivity of configuration, the absorber have long shape on direction identical with longitudinal X.It absorbs Property main body 2 keeps its length direction consistent with longitudinal X of diaper 1 under expansion and elongation state (state shown in Fig. 4), and passes through Well known engaging facilities (bonding agent etc.) are bonded on the central portion of exterior body 3.Here, expansion and elongation state be to peel side seal portion And diaper is made to be unfolded state, the diaper of the unfolded state, which is extended to, makes the elastomeric element in each portion extend and become design size (in the state of eliminating the influence of all elastomeric elements it is planar extend after size it is identical) state.
As shown in Figure 2 to 4, exterior body 3 includes:Form the outer surface (the non-skin abutment face of exterior body 3) of diaper 1 Outer-skin sheet 35;It is configured at the inner surface (skin abutment face of exterior body 3) of the formation diaper 1 of the inner surface side of the outer-skin sheet 35 Inner layer piece 36;And between two panels 35,36 by the fixed multiple Filamentous or band-like elastomeric elements 5 of bonding agent (not shown), 6, 7.Pass through the engagement (not shown) such as bonding agent or heat-sealing in predetermined portion between two panels 35,36.
Exterior body 3 (outer-skin sheet 35, inner layer piece 36) includes resin material, is formed using the resin material as main component.Make For an example of exterior body 3 (outer-skin sheet 35, inner layer piece 36), there are as resin material includes polyethylene, poly terephthalic acid The synthetic resin of the heat sealability such as ethyl ester, polypropylene, and be made of laminate of non-woven fabrics, film, non-woven fabrics and film etc. Component.Hot-wind nonwoven cloth, hot-rolling non-woven fabrics, spunlace non-woven cloth, spun-bonded non-woven fabrics, spray fusing non-woven fabrics are there are as non-woven fabrics Deng.
The manufacturing method of diaper 1 includes:It is (outer to be fixed on band-like exterior body 3 by main body fixed step for absorbent main body 2 Synusia 35, inner layer piece 36);Pressurization operation is overlapped, makes the predecessor side for the band-like exterior body 3 for being fixed with absorbent main body 2 with after Body stresses to fold and (make to stress to fold along a lateral margin side and another lateral margin for the length direction of band-like exterior body 3), makes the outer of overlapping Filling the predetermined position for forming side seal portion of body 3 becomes pressurized state;With side seal portion formation process, shape of the cut-out in pressurized state At the predetermined position in side seal portion, while making the cut-out edge of the multiple exterior bodies 3 in pressurized state generated by the cut-out Portion is fused to each other and forms side seal portion 4.That is, side seal portion 4 is the band by the band-like exterior body 3 and rear body R to predecessor F The cut-out edge for two exterior bodies 3,3 that the laminated body irradiation laser of the exterior body 3 of shape is formed to cut off the laminated body.
More specifically, in the manufacturing method of diaper 1, as shown in figure 5, by by band in above-mentioned coincidence pressurization operation The exterior body 3 (outer-skin sheet 35, inner layer piece 36) of shape is folded in its width direction, makes to be fixed with the band-like outer of absorbent main body 2 The predecessor side and rear body for filling body 3 stress to fold, and are thus manufactured with other approach and " do not form the pants-type disposable urine in side seal portion The diaper non-individual body 10 " that the presoma of cloth is connected in one direction.Moreover, in above-mentioned side seal portion formation process, as shown in Figure 1 It is each monomer that the diaper non-individual body 10 (band-like exterior body 3), which is cut off (fusing), by the irradiation of laser 30, while will be led to It melts each other the cut-out edge of multiple exterior bodies 3 (outer-skin sheet 35, inner layer piece 36) in pressurized state crossed the cut-out and generated It connects, and is continuously manufactured by the Breeches type disposable diaper 1 for including the exterior body 3 with a pair of of side seal portion 4,4.
First, as shown in figure 5, the band-like outer-skin sheet 35 that is continuously supplied from blank roller (not shown) with from blank roller Waist elastic members 5, the formation waist fold of waist fold will be formed between the band-like inner layer piece 36 that (not shown) continuously supplies Waist portion elastomeric element 6 and formed leg gather wrinkle leg elastic members 7 with extend be defined elongation elongation state under It respectively configures multiple.At this point, leg elastic members 7 are guided via the well known shake that the conveying direction with piece orthogonally moves back and forth Part (not shown) forms and configures defined calf circumference figure.In addition, making band-like outer-skin sheet 35 and band-like 36 weight of inner layer piece Before folded, the predetermined portion in the opposite face of two panels 35, any of 36 or both (is not schemed using adhesive applicating machine Show) coating hot-melt type bonding agent.In addition, the elastomeric elements such as waist elastic members 5, waist portion elastomeric element 6 with across two panels 35, (cut-out shown in symbol 10C is pre- in Fig. 6 for the part (predetermined portions for forming side seal portion 4) of the 36 irradiation cut-out by laser Determine part) mode configured with elongation state in the case of, in order to avoid the significantly receipts of the elastomeric element after the cut-out A problem that contracting and the elastomeric element fall off, preferably in the part and its bonding agent applied around.It is being configured at two panels 35,36 Between before, can intermittently be applied using adhesive applicating machine (not shown) in waist elastic members 5 and waist portion elastomeric element 6 Apply hot-melt type bonding agent.
Moreover, as shown in figure 5, being sent into the waist elastic members accompanied under elongation state between a pair of of niproll 11,11 5, it the band-like outer-skin sheet 35 and band-like inner layer piece 36 of waist portion elastomeric element 6 and leg elastic members 7 and pressurizes, by This is formed in band-like between 35,36 with band-like exterior body 3 of the elongation state configured with multiple elastomeric elements 5,6,7.It is outer at this In the formation process for filling body 3, using the engagement devices such as convex roller and corresponding anvil roller (not shown) in 2 adjacent waist portions The multiple joint portions (not shown) for engaging band-like outer-skin sheet 35 and band-like inner layer piece 36 are formed between elastomeric element 6,6.Later, Elastomeric element precut device (not shown) is used as needed, is accordingly pressed with the position for configuring aftermentioned absorbent main body 2 Multiple waist portions elastomeric element 6 and multiple leg elastic members 7, and multiple individuals are cut to so that contraction work will not be embodied Energy.As above-mentioned elastomeric element precut device for example there are the record of Japanese Unexamined Patent Publication 2002-253605 bulletins for compound Elastomeric element cutting portion of the manufacturing method of extensible member etc..
Then, it is glued as shown in figure 5, being pre-coated with hot melt adhesive etc. in the absorbent main body 2 manufactured by other process Agent is connect, the absorbent main body 2 is made to be rotated by 90 °, band-like exterior body is being constituted intermittently to supply fixed (main body fixed step) On 3 inner layer piece 36.In addition, the bonding agent of absorbent main body fixation can not also be coated in absorbent main body 2, but it is pre- The precalculated position of configuration absorbent main body 2 coated in inner layer piece 36.
Then, as shown in figure 5, in the band-like exterior body 3 configured with absorbent main body 2 by 7 ring of leg elastic members The inside for the annulus that shape surrounds forms leg hole LO '.The leg hole formation process can use rotary cutter, laser cutting Machine etc. always implemented by identical with the technology of the manufacturing method of this article technology.In addition, in the mode of diagram, band-like Exterior body 3 configure absorbent main body 2 after form leg hole, leg hole can also be formed before the configuration of absorbent main body 2.
Then, band-like exterior body 3 is folded in its width direction (direction orthogonal with the conveying direction of exterior body 3). More specifically, as shown in figure 5, by band-like exterior body 3 along both sides 3a, 3a of conveying direction to cover absorbability master The mode at the length direction both ends (both ends of longitudinal X of absorbent main body 2 shown in Fig. 4) of body 2 is turned back, and by absorbability The length direction both ends of main body 2 are fixed, and exterior body 3 is rolled over two foldings (weight in its width direction together with absorbent main body 2 later Close pressurization operation).In this way, obtaining diaper non-individual body 10.
Then, as shown in Figure 1, using laser type engagement device 20 in this way with the diaper non-individual body 10 of other approach manufacture Laser is irradiated, and forms a pair of of side seal portion 4,4 (side seal portion formation process), is continuously manufactured by including having a pair of side seal portion 4 Exterior body 3 Breeches type disposable diaper 1.
Laser type engagement device 20 is illustrated, laser type engagement device 20 is as shown in Figure 1, include:Hollow cylinder Roller 23 has the cylindric bearing part 21 being driven in rotation in the directions arrow A;With belt pressue device 26, have Cricoid press belt 24 (pressing component).Laser type engagement device 20 includes can be to (the circumferential surface of cylinder roller 23 of bearing part 21 Portion) the interval adjustment mechanism (not shown) that is increased and decreased adjustment with the interval of press belt 24 utilizes branch by the adjustment at the interval Bearing portion part 21 and press belt 24 can suitably adjust the pressure being added on diaper non-individual body 10.
The week that bearing part 21 forms cylinder roller 23 is facial (abutting part with machined object), is clamped and fastened on to form circle Between a pair of cricoid framework 22,22 of the left and right sides edge of cylinder roller 23.Bearing part 21 is by the week with cricoid framework 22 The single endless member of long identical length is constituted, and is had by the metal materials such as iron, aluminium, stainless steel, copper or ceramics etc. heat-resisting Property material constitute.
Bearing part 21 have laser can by light pass through portion.Bearing part 21 as shown in figures 1 to 6, as light There is the opening portion 27 that the slot shape of the bearing part 21 is penetrated through in thickness direction by portion.There is rectangle when opening portion 27 is overlooked The width direction of shape, length direction and bearing part 21 (uses direction shown in symbol X in Fig. 6 (a).With cylinder roller 23 The parallel direction of rotary shaft) unanimously, cylindric bearing part 21 circumferentially spaced specified interval be formed with it is multiple.Bearing Component 21 makes laser pass through in opening portion 27, and on the other hand, the fraction of laser light other than opening portion 27 cannot pass through (transmission).Make For bearing part 21 formed opening portion 27 method in addition to enumerate 1) predetermined portion in bearing part 21 by etching, rushing The break-through such as hole, laser processing are arranged except the method for opening portion 27, additionally it is possible to enumerate and 2) be used as bearing part 21, instead of single Endless member, and use the component of the rectangular shape of multiple bendings, between a pair of of framework 22,22 the framework 22 it is circumferential every Configure these multiple components method with opening specified interval.In above-mentioned method 2), slot is divided between 2 adjacent components The opening portion 27 of shape.In addition, the position shown in symbol 27A (joint portion forms through hole) is at aftermentioned in Fig. 6 (a) In the first embodiment of invention by the way of, no explanation is provided here.
As shown in Fig. 6 (b), bearing part 21 has recess portion 28 in its outer surface (bearing surface with machined object).Recess portion 28 cylindric bearing part 21 circumferentially spaced specified interval be formed with it is multiple, positioned at adjacent 2 recess portions 28,28 Between region (protrusion) be formed with the opening portion 27 of slot shape.Opening portion 27 is formed in the cylindric bearing part of raised part 21 circumferential center.
In this way, by being formed with recess portion 28 in the outer surface of bearing part 21, in the in uneven thickness of diaper non-individual body 10 In the case of, it can be with the big part of the opposite thickness of the diaper non-individual body 10 (such as configuring area of absorbent main body 2) The mode in recess portion 28 is accommodated in import the diaper non-individual body 10 on the outer surface of bearing part 21.Moreover, diaper is connected Continuous body 10 is imported in such a manner when on bearing part 21, and as shown in Fig. 6 (b), diaper non-individual body 10 (is pressed with press belt 24 Splenium part) bearing surface (another face 10b) it is generally flat, so by press belt 24 pressing when on diaper non-individual body 10, Diaper non-individual body 10 is located at the Bu Fen &#91 being formed in the raised part of opening portion 27;The cut-out shown in symbol 10C is pre- in Fig. 6 Fixed part (predetermined position for forming side seal portion 4) and its near) integrally, existed with defined tension winding by diaper non-individual body 10 With press belt 24 on bearing part 21, equably pressurize in its thickness direction under defined pressure.In this way, being shone from by laser It penetrates and starts the partial illumination laser to pressurizeing in a thickness direction before cutting off come when cutting off the part, it can be more reliably So that the cut-out edge of the multilayer tablet of the composition cut-off part is fused to each other, can realize side seal portion 4 (sealing edge) Heat seal strength further improves.
Belt pressue device 26 is including cricoid press belt 24 (pressing component) and in the state for being provided with the press belt 24 Three rollers 25a, 25b, 25c of lower rotation.Roller 25a, 25b, 25c can be driven rollers, can also be servo-actuated with cylinder roller 23 The driven voller of rotation.Press belt 24 carries out rotation driving, or and cylinder to any 1 or more in rotating roller 25a, 25b, 25c 23 servo rotary of roller, and moved with speed identical as cylinder roller 23 (bearing part 21).Bearing part 21 and press belt 24 are preferred Temperature is maintained into defined temperature range by air-cooled, water cooling etc..
As press belt 24 (pressing component), the metal of the heat resistance of the heat generated when can use with resist processing or tree The band of fat, such as the band being made of iron, aluminium, stainless steel and other metal materials can be used.In addition, usually making as press belt 24 With the band of the permeability without the laser irradiated to machined object (diaper non-individual body 10), can also use has the permeability Band.
As shown in Figure 1, the hollow portion in hollow cylinder roller 23 (bearing part 21) is provided with towards the formation cylinder roller The bearing part 21 of 23 all faces irradiates the irradiation head 31 of laser 30.Irradiation head 31 is the electric current for capableing of scanning laser 30 freely Scanner (device that mirror is provided on motor reel) is counted, including:Make laser 30 parallel with the rotary shaft of cylinder roller 23 Direction (direction of the middle sign Xs of Fig. 6 (a)) retreat mechanism, keep laser 30 and the diaper on bearing part 21 continuous The position (point of irradiation) that body 10 is encountered cylinder roller 23 the mechanism circumferentially moved, make laser 30 on the circumferential surface of cylinder roller 23 The certain mechanism etc. of point diameter.Irradiation head 31 does not have the generation function (light source) of laser 30, and laser 30 is by being configured at cylinder roller 23 Outside light source it is (not shown) generate, reach irradiation head by linking light-path (not shown) of the light source and irradiation head 31 31.Laser radiation mechanism by with this structure, can make the point of irradiation of laser 30 the circumferential direction of cylinder roller 23 and with this week (direction shown in symbol X is used in Fig. 6 (a) to orthogonal direction.The direction parallel with the rotary shaft of cylinder roller 23.) both direction It is arbitrary mobile.In addition, direction (the circumferential direction with cylinder roller 23 parallel with the rotary shaft of cylinder roller 23 shown in symbol X in Fig. 6 Orthogonal direction) it is direction identical with longitudinal X of diaper 1 (absorbent main body 2) in Fig. 4.
As shown in Figure 1, diaper non-individual body 10 is by guide reel (not shown) etc., as defined in being applied in the state of tension It is imported into be formed on the outer surface of the week for the cylinder roller 23 that the directions arrow A are driven in rotation facial bearing part 21, winding In on the bearing part 21, using being rotated in its circumferential direction by after conveying predetermined distance for the cylinder roller 23, utilization is (not shown) Outlet roller and niproll etc. leave from the bearing part 21.In this way, diaper non-individual body 10 is being formed with defined tension winding It is crimped on the bearing part 21 of all faces of cylinder roller 23 and using press belt 24 and is conveyed, thus diaper non-individual body Part that 10 supported portion part 21 and press belt 24 clips and its near, since before laser irradiation is cut off for Its thickness direction is pressurized the state of (compression).It therefore, can be more efficient in the case where diaper non-individual body 10 includes non-woven fabrics Ground compresses the diaper non-individual body 10, as a result, when being cut off to the irradiation laser of diaper non-individual body 10 in the compression, The cut-out edge more reliably welding each other that can make multiple (exterior bodies 3) of the composition cut-off part, can realize The heat seal strength in side seal portion 4 further increases.
The bearing part 21 (cylinder roller 23) on bearing part 21 until being left from it is imported from diaper non-individual body 10 Rotation angle can be such as 90 degree or more 270 degree hereinafter, preferably 120 degree or more 270 degree or less.In addition, passing through pressurization Band 24 (pressing component) makes the range for the angle (crimping angle) that diaper non-individual body 10 crimps with bearing part 21, makes throughout circle The bearing part 21 (cylinder roller 23) of tubular it is circumferential be 360 degree the case where crimped fullly in the case of, preferably 90 degree or more 270 degree hereinafter, more preferably 120 degree or more 270 degree or less.
In Fig. 1 and embodiment shown in fig. 6, continuous conveying diaper non-individual body 10, and make one face 10a and shape At cylinder roller 23 week face and with laser 30 can by slot shape opening portion 27 (light passes through portion) bearing part 21 outer surface abuts, from 21 side of bearing part via opening portion 27 to because of bearing part 21 and due to press belt 24 (pressing component) As diaper non-individual body 10 (predetermined position for forming side seal portion 4) irradiation laser 30 of pressurized state, thus connect in cut-out diaper Make while continuous body 10 multiple (exterior bodies 3) in above-mentioned pressurized state generated by the cut-out cut-out edge that This welding is formed side seal portion 4 (side seal portion formation process).
Specifically, as shown in figures 1 to 6, press belt 24 (pressing component) is pressed and is being abutted with bearing part 21 On another face 10b (face with the opposite side of a bearing surface i.e. face 10a for bearing part 21) of diaper non-individual body 10, pass through Laser 30 is irradiated via the opening portion 27 of slot shape from 21 side of bearing part to the diaper non-individual body 10 of the state, is continuously manufactured by It include the diaper 1 of the exterior body 3 with a pair of of side seal portion 4,4.In this way, the irradiation of laser 30 is to by 21 He of supported portion part Press belt 24 clip and what the diaper non-individual body 10 in pressurized state (compressive state) carried out, from making to generate by the irradiation Multiple (exterior bodies 3) the reliably welding each other of cut-out edge, come make side seal portion 4 heat seal strength improve from the perspective of It is preferred that.
Fig. 7 is shape while explanation cuts off diaper non-individual body 10 (band-like laminate) using laser type engagement device 20 At the figure of the situation of side seal portion 4 (sealing edge), Fig. 7 (a) shows schematically being cut off by laser 30 for diaper non-individual body 10 Cut-out predetermined portions 10C (predetermined position for forming side seal portion 4) and its near.The diaper non-individual body 10 of the mode of diagram is cut It is the length direction in the region without configuring absorbent main body 2 of diaper non-individual body 10 shown in disconnected predetermined portions 10C such as Fig. 6 (a) The center of (conveying direction A).In cut-out predetermined portions 10C, the open end of waist opening portion 8 (with reference to Fig. 2) and its near To be overlapped 8 layers of structure division of 8 pieces, part in addition to this is 4 layers of structure division for being overlapped 4 pieces.4 layers of structural portion Point as include shown in Fig. 7 (a) 1 layer of exterior body 3 for constituting veutro portion 1A 2 pieces (outer-skin sheet 35 and inner layer piece 36) and with composition 1 layer of exterior body, 3 identical 2 pieces 35,36 of drosal part 1B are laminated these 4 pieces and constitute.On the other hand, 8 layers of structure Part is formed in the following manner as above-mentioned:Due to when diaper non-individual body 10 is manufactured with the both sides of band-like exterior body 3 The mode at the length direction both ends of portion 3a, 3a covering absorbent main body 2 is turned back (with reference to Fig. 4 and Fig. 5), in veutro portion 1A and the back of the body Side 1B is individually present 2 layers of exterior body 3 and is laminated with these 4 layers of exterior bodies 3,3 of meter, so 8 layers of structure division are as a result Be laminated 8 pieces 35,36 and constitute.In addition, 4 layers of structure division and 8 layers of structure division respectively, sometimes in overlapped piece 35, between 36 configured with elastomeric elements such as waist elastic members 5, waist portion elastomeric elements 6, from the viewpoint of easy explanation in Fig. 7 It sets out, omits the diagram of the elastomeric element.Hereinafter, mainly 4 layers of structure division are illustrated, unless otherwise specified, 8 layers Structure division is also equally constituted with 4 layers of structure division, forms side seal portion 4.
In the cut-out predetermined portions 10C of 4 layers of construction of diaper non-individual body 10, a face 10a of diaper non-individual body 10 is constituted The outer-skin sheet 35 of (bearing surface with bearing part 21) and any one for constituting the piece (inner layer piece 36) other than the piece of a face 10a Or both be absorb laser 30 and generate heat piece.In the mode of diagram, 4 pieces 35,36 for constituting cut-out predetermined portions 10C are complete Portion is the piece (non-woven fabrics) for absorbing laser 30 and generating heat.In addition, cut-out predetermined portions 10C and the overlapped outer layer near it Between piece 35 and inner layer piece 36 this 2, before irradiating laser 30, it can not also can also be connect completely by engagements such as bonding agents It closes.
Diaper non-individual body 10 such as shown in Fig. 7 (b), is abutted with bearing part 21 with a face 10a and cuts off predetermined portions 10C The mode that (predetermined position for forming side seal portion 4) is located on the opening portion 27 of slot shape is imported into the branch rotated to the directions arrow A On bearing portion part 21, and on the 10b of another face press press belt 24 (pressing component), thus to the directions arrow A convey and to Thickness direction pressurizes (compression).Moreover, from 21 side of bearing part via opening portion 27 in the conveying and the cut-out of pressurized state Predetermined portions 10C irradiates laser 30.As above-mentioned, the point of irradiation of laser 30 can be moved arbitrarily in the circumferential direction of cylinder roller 23, setting For with the moving along the circumferential direction of opening portion 27, so to the cut-out predetermined portions on the opening portion 27 10C, 30 certain time of Continuous irradiation laser in its conveying.
When the cut-out predetermined portions 10C of 4 layers of structure irradiates laser 30, be present in cut-out predetermined portions 10C piece 35, 36 forming material (fiber etc.) gasifies disappearance due to fever caused by the direct projection of laser 30, is present in the cut-out predetermined portions The forming material near 10C is generated heat melting indirectly because of laser 30.As a result, as shown in Fig. 7 (c), 4 layers of structure Cut-out predetermined portions 10C is blown, and the laminate (diaper presoma) of a sheet is cut out from diaper non-individual body 10, above The mode diaper non-individual body 10 is stated to be cut off, at the same by 4 pieces 35 in the laminate for the sheet that the cut-out generates, 36 cut-out edge is each other and the cut-out edge welding separately from each other of 4 pieces 35,36 of the diaper non-individual body 10 that cuts out.This It is a little to cut off edges separately from each other before its formation (before the cut-out of the diaper non-individual body 10 under the irradiation of laser 30), because of supported portion Part 21 and press belt 24 clip and become pressurized state (compressive state).According to the manufacturing method of the diaper of the mode of diagram, this Sample is with the irradiation of laser while implementing the cut-out of band-like exterior body 3 and being in by 2 positions that the cut-out generates The mutual welding in cut-out edge of the exterior body 3 of pressurized state, thus with the welding at irradiation welding 2 position by laser twice The method at position is compared, and can be exported with the laser of general half and be implemented welding and cut-out in the same process, can efficiently made Make diaper 1.In addition, since welding and cut-out can be carried out in the same process, so not generating the cut-out edge of piece (exterior body) The non-sealing edge not being fused each other, therefore also have the effect of cutting down material.
The cut-out edge of piece 35,36 generates heat in the irradiation of laser 30 and after irradiation and becomes molten condition, but passes through The irradiation of laser 30 and the diaper presoma of a sheet cut out from diaper non-individual body 10 and 10 each self-insurance of diaper non-individual body The pressurized state formed by bearing part 21 and press belt 24 is held, solidification is quickly cooled down by outer gas after the irradiation, at Weld portion 40 made of forming material (fiber etc.) melting integration for the cut-out edge.In this way, by forming weld portion 40, Form one in a pair of of side seal portion 4,4 of 1 diaper 1.In addition, as needed, using known in suction unit, exhaust apparatus etc. Cooling body, force cooling fin 35,36 cut-out edge, the formation of weld portion 40 can also be promoted.
In this way, when the cut-out predetermined portions 10C (predetermined position for forming side seal portion 4) at 1 position is cut off, laser 30 Point of irradiation moves so that the opposite direction in conveying direction A is touched with adjacent other opening portion 27, other via this Opening portion 27 is irradiated to other cut-out predetermined portions 10C disposed thereon.As a result, other cut-out predetermined portions 10C with it is upper It states and is similarly cut off welding, formation another side seal portion 4 (weld portion 40) pairs of with the side seal portion 4 formed before.It Afterwards, by same operation repeatedly, continuous manufacture includes the pants-type disposable urine of the exterior body 3 with a pair of of side seal portion 4,4 Cloth 1.
As one of the main characteristic of diaper 1 manufactured in this way, side seal portion 4 can be enumerated.As shown in Fig. 7 (c), (direction shown in symbol X is used in Fig. 1 in the direction extended with side seal portion 4.Longitudinal X of diaper 1 as shown in fig. 4 is phase Tongfang To.) orthogonal direction (the lateral Y of diaper 1 as shown in fig. 4 is the same direction) sectional view in, produced by above-mentioned cut-out The outer rim 4a in raw side seal portion 4 is formed as to the convex arcuation in the inside of exterior body 3, and is leaning on exterior including outer rim 4a and than it The position of the inside of body 3 is formed with 4 pieces 35 for constituting the exterior body 3,36 mutual weld portions 40, and this of the weld portion 40 is outer The central portion of the thickness direction (upper and lower directions of Fig. 7 (c)) of dress body 3 width compared with both ends (upper and lower end) is wide. That is, weld portion 40 is in the sectional view along (the orthogonal direction of cutting direction generated with laser) the lateral Y of diaper 1, in thickness Degree direction goes the width of weld portion 40 to broaden gradually towards central portion, forms so-called crescent or semilune (shown in Fig. 7 (c) Weld portion 40 is crescent).
The presence of weld portion 40 made of forming material melting and solidification of the side seal portion 4 because of piece, other position phases with diaper 1 It is the position become the reason of making the wearing feeling of diaper 1 reduce, such weld portion 40 is in diaper than being hardened and skin sense of touch variation When being formed as crescent or semilune in 1 width direction sectional view, with the weld portion in such as existing side seal portion (such as patent text Offer the position indicated with symbol 9 that 1 Fig. 1 is recorded) the case where being formed as rectangle in identical sectional view like that compares, exists Reduce in the ratio of the weld portion 40 of the corner 3S of the side edge part for the exterior body 3 for constituting side seal portion 4, thus because being difficult to damage corner Flexibility, skin sense of touch possessed by 3S scripts, so the wearing feeling of diaper improves compared with existing product.On the other hand, exist Bring the position influenced greatly, the i.e. central portion of the thickness direction of the side edge part of exterior body 3 (outer the heat seal strength in side seal portion 4 The part that the corner 3S of a surface side and the 3S of another surface side of dress body 3 are clipped), there are the weld portions 40 of sufficient amount, so side seal Portion 4 has enough heat seal strengths in practical, is difficult to generate the trouble such as 4 breakage of side seal in the dress of diaper 1.
In addition, being formed as to the convex arcuation in the inside of exterior body 3 especially by the outer rim 4a in side seal portion 4, such as Fig. 8 institutes Show, when diaper 1 is worn extend waist opening portion 8 in the state of, the corner 3S of the side edge part of the exterior body 3 of the sides veutro portion 1A and The corner 3S of the side edge part of the exterior body 3 of the sides drosal part 1B is close, and the separating distance between two corner 3S, 3S reduces, so being located at Weld portion 40 between two corner 3S, 3S is because of the position positioned at the outside for leaning on diaper 1 than the weld portion 40, close to each other two corners Portion 3S, 3S become and are difficult to touch with hand and from the state of external invisibility, and thus not only wearing feeling but also appearance be also all for diaper 1 It improves.
In this way, the weld portion 40 in side seal portion 4 is formed as crescent or semi-moon shaped in the width direction sectional view of diaper 1 Reason deduction is to cut off predetermined portions 10C's to diaper non-individual body 10 in laser 30 because as shown in Fig. 7 (b) and Fig. 7 (c) After irradiation neutralizes irradiation, including (cut-out predetermined portions 10C (forms the reservations in side seal portion 4 to the diaper non-individual body 10 of non-woven fabrics Position)) it is configured between the bearing part 21 including metal material and pressing component 24.That is, as continuous from diaper is clipped up and down The metal material of the bearing part 21 of body 10 (outer-skin sheet 35 and inner layer piece 36) and the main forming material of pressing component 24, with The non-woven fabrics of main forming material as piece 35,36 is high compared to pyroconductivity, therefore by the irradiation of laser 30, in piece 35,36 heat generated are easily and quickly absorbed by the bearing part 21 or pressing component 24 that are contacted with the piece 35,36, pass through laser 30 irradiation and diaper non-individual body 10 are cut off the corner 3S of the side edge part of the exterior body 3 for constituting side seal portion 4 formed, due to The bearing part 21 or pressing component 24 of thermal conductivity ratio corner 3S high contact, so the heat generated in corner 3S is rapidly It is absorbed by two components 21,24, as a result, corner 3S is difficult to the high temperature for becoming that 40 degree of weld portion can be formed, therefore at For the few position of the ratio of weld portion 40.On the other hand, the central portion of the thickness direction of the side edge part of exterior body 3 is (by exterior The part that the corner 3S of one surface side of body 3 and the 3S of another surface side are clipped) not two components 21,24 high with pyroconductivity connect It touches, so make the central portion melting by heat that the irradiation of laser 30 is generated in the central portion stays in the central portion, the result is that Weld portion 40 is unevenly distributed mostly in the central portion.
Therefore, come in order to which weld portion 40 to be formed as to crescent or semilune in the sectional view of the width direction of diaper 1 Above-mentioned function and effect are played, bearing part 21 and pressing component 24 include metal materials or the potteries such as iron, aluminium, stainless steel, copper Porcelain, and multiple at least part (outer-skin sheet 35 for especially forming the outer surface of diaper 1) of exterior body 3 is constituted, A part includes resin material, specifically, for example preferably including non-woven fabrics.Additionally, it is preferred that whole in multiple 35 and 36 Piece includes resin material.As non-woven fabrics, the nonwoven conventionally used in the technical field is used without special limitation Cloth.
Laser is illustrated, being used as the laser for being radiated at diaper non-individual body 10 (band-like exterior body 3) can be by The piece (outer-skin sheet 35 and inner layer piece 36) for constituting exterior body 3 absorbs and makes the laser of the wavelength of piece fever.Here, " constituting outer Fill the piece of body " it is not limited to constitute the piece in a face (bearing surface with bearing part 21) for exterior body (such as in above-mentioned mode In outer-skin sheet 35), as long as constitute exterior body piece, which kind of can.The laser for being radiated at exterior body is outer for constituting this Whether each of dress body is the wavelength for being absorbed by the piece and the piece being made to generate heat, according to the wave of the material of piece and used laser Long relationship determines.The piece for constituting exterior body is widely used in the absorbent commodities such as disposable diaper or sanitary napkin In the case of the plastic non-woven fabrics or film of the manufacture of (amenities), as laser, it is preferable to use CO2Laser, YAG laser, LD laser (semiconductor laser), YVO4Laser, optical-fiber laser etc..In addition, constituting the piece of exterior body as synthesis In the case that resin includes polyethylene, polyethylene terephthalate, polypropylene etc., make the piece well as being absorbed by the piece The wavelength of fever is for example it is preferable to use 8.0 μm or more 15.0 μm hereinafter, particularly preferably using there are the laser aids of height output CO211.0 μm or less of 9.0 μm of laser oscillation wavelength or more.The piece for putting the considerations composition exterior body such as diameter, laser output of laser Material and thickness etc. can be selected suitably.
(side seal portion visuality improves mechanism)
The manufacturing purpose object of the above-mentioned manufacturing method for having used laser type engagement device i.e. diaper 1, including by simultaneously Implement a pair of of side seal portion 4,4 obtained from the process of cut-out and the welding of exterior body 3, flexibility, the skin sense of touch in side seal portion 4 are excellent Different, the wearing feeling of diaper 1 is good.On the other hand, from record of Fig. 2 and Fig. 8 etc. it is found that at least when wearing, side seal portion 4 is being urinated The peripheral portion of the outer surface of cloth 1 and any surface of inner surface all unlike the side seal portion 4 protrudes outward, the outer surface of diaper 1 and Across the side seal portion of the state of inner surface 4 is essentially without variation, so be difficult to recognize side seal portion 4 from outside, side seal portion 4 it is visual It is visual low.
Moreover, if the visual visuality in side seal portion 4 is low, such as after 1 use of diaper, the infant as wearer Protector (such as mother) when taking diaper 1 from wearer, it is difficult to see that side seal portion 4, diaper 1 can be bothersome when taking operation. Therefore, make diaper 1 that there is side seal portion visuality to improve mechanism to improve the visual purpose in side seal portion 4 in the present invention.Side seal Portion's visuality improves mechanism the first, second, and third embodiment as be described hereinafter, is preferably placed near side seal portion 4 and is waist The open end of opening portion 8 or its near.In addition, side seal portion visuality improves mechanism above-mentioned including main body regular worker In sequence, the manufacturing method for the Breeches type disposable diaper for overlapping pressurization operation and side seal portion formation process, from main body regular worker To the side seal portion, formation process is arranged on before terminating on exterior body 3 after sequence.Hereinafter, the side seal portion visuality of the present invention carries High mechanism and with its present invention Breeches type disposable diaper and its manufacturing method in, based on its preferred embodiment join It is illustrated according to attached drawing.In addition, to aftermentioned embodiment, carried out based on the composition part different from above-mentioned " basic fundamental " Illustrate, same composition part is added identical symbol and omitted the description.The composition part being not particularly illustrated suitably is applicable in needle To the explanation of above-mentioned " basic fundamental ".
Fig. 9 indicates the first embodiment (Breeches type disposable diaper 50A) of the Breeches type disposable diaper of the present invention Major part, that is, joint portion 51 and protruding portion 52 (side seal portion visuality improves mechanism) and they near.First embodiment Diaper 50A in addition on above-mentioned diaper 1 have as side seal portion visuality improve mechanism protruding portion 52 and formation its needed for Other than this point of the joint portion 51 wanted, constituted in the same manner as diaper 1.Protruding portion 52 is located at a pair of of side seal portion 4,4 respective formation waists The part of the open end of portion opening portion 8 is formed in the part surrounded with dashdotted circle in diaper 1 shown in Fig. 2.
It is further illustrated for the diaper 50A of first embodiment, in diaper 50A, as shown in figure 9, in side seal Open end 81 near portion 4 and for waist opening portion 8 or its near, be formed with predecessor's F (veutro portions in thickness direction Exterior body 3 (outer-skin sheet 35 and the inner layer piece of exterior body 3 (outer-skin sheet 35 and inner layer piece 36) and rear body R (drosal part 1B) 1A) 36) joint portion 51 (with reference to Fig. 9 (a)) engaged, and the part for forming the open end 81 in side seal portion 4 (more specifically, should Partial exterior body 3) it protrudes outward to form protruding portion 52 (with reference to Fig. 9 (b)) than its peripheral portion when diaper 50A is worn, it should Protruding portion 52 improves mechanism as side seal portion visuality and plays a role.That is pass through the presence of protruding portion 52, side seal portion in diaper 50A 4 visual visual raising.
Joint portion 51 clips side seal portion 4, and in both sides (sides predecessor F and the sides rear body R), (mutual) is asymmetrically formed one by one respectively. In above-mentioned side seal portion formation process, in the predetermined position for forming side seal portion 4 for cutting off the exterior body 3 for being in pressurized state Laser pre-irradiation after, form joint portion 51, therefore the exterior body when irradiating laser in exterior body 3 using identical laser Under the above-mentioned pressurized state of 3 (diaper non-individual bodies 10), joint portion 51 has plan view shape as defined in circle etc., in addition, also having Using the knot for the through hole for being included in thickness direction perforation diaper 50A (exterior body 3 and rear body R of predecessor F respective exterior body 3) The case where structure.Joint portion 51 is under the nature or common use state of diaper 1, because being formed with the position at the joint portion 51 Contraction etc., the state being difficult to see that when becoming visual is (in Fig. 9 (a) from the viewpoint of explanation is easy, it is illustrated that have joint portion 51, but actually so by visual observation not necessarily it can be seen that).Joint portion 51 is primarily to forming protruding portion 52 and being formed , joint portion 51 itself can not also be used as side seal portion visuality to improve mechanism and play a role, in addition, by suitably adjusting engagement The shape or size in portion 51 make joint portion 51 by visual observation as it can be seen that and keep protruding portion 52 more obvious, the mesh in side seal portion 4 can also be made Depending on visual improve.
In the manufacturing method of the diaper 50A of first embodiment, the cut-out of exterior body 3 and the formation at joint portion 51 are logical It crosses and irradiates the wave that piece (the outer-skin sheet 35 and inner layer piece 36) absorption that can be configured exterior body 3 makes the piece generate heat to the exterior body 3 Long laser and implement.More specifically, as shown in Fig. 6 (a), in the regulation of the bearing part 21 of laser type engagement device 20 Position (near the opening portion 27 of slot shape), advance break-through setting laser 30 can by joint portion formation light transmissive portion 27A, from 21 side of bearing part via the opening portion 27 of slot shape to the exterior body 3 (diaper non-individual body 10) of above-mentioned pressurized state It irradiates before laser 30 or after irradiation, irradiates laser 30 from 21 side of bearing part via joint portion formation light transmissive portion 27A.By This, the forming material (fiber etc.) of the piece 35,36 existing for the part corresponding with light transmissive portion 27A of exterior body 3 is because of laser 30 Direct projection caused by fever and melt or vaporization disappear.Because of the fever that the direct projection of laser 30 generates, the forming material of piece 35,36 It does not disappear in the case of melting, which becomes joint portion 51, is connect by the joint portion 51 under above-mentioned pressurized state Close the exterior body 3 of the exterior body 3 and rear body R of predecessor F.In addition, due to the fever generated by the direct projection of laser 30 piece 35,36 shape In the case of disappearing at material vaporization, which is the exterior that the exterior body 3 and rear body R of predecessor F is penetrated through in thickness direction The through hole of body 3, and the forming material existing for the trepanning edge of the through hole is generated heat melting indirectly because of laser 30, The puddle (the opening edge of the through hole) becomes joint portion 51, before being engaged by the joint portion 51 under above-mentioned pressurized state The exterior body 3 of the exterior body 3 of body F and rear body R.In addition, the shape when vertical view of light transmissive portion 27A is as shown in fig. 6, be not limited to justify Shape may be set to variously-shaped such as rectangle.
In this way, being formed about near the side seal portion 4 of diaper 50A and for the open end 81 or its in waist opening portion 8 Have joint portion 51, by the joint portion 51 engage predecessor F exterior body 3 and rear body R exterior body 3 when, exterior body 3 (outer-skin sheet 35, Inner layer piece 36) the outside (4 side of side seal portion) positioned at joint portion 51 part when diaper 1 is worn from being formed as cricoid waist Opening portion 8 protrudes outward, and forms protruding portion 52.In short, when diaper 50A is worn, protruding portion 52 is not because along wearer's Body, thus by visual observation it can be seen that.Therefore, even if the side seal portion 4 of diaper 50A is visual low portion by visual observation Point, when diaper 50A is worn, because of the presence of protruding portion 52 positioned adjacent, thus by the diaper 50A of wearing effect from wearing When the body for the person of wearing is taken, side seal portion 4 can be rapidly confirmed, later such as well-established law, diaper 50A can be torn in side seal portion 4 At predecessor F and rear body R, the diaper after using can rapidly be taken from body.
From the viewpoint of being formed more reliably protruding portion 52 (side seal portion visuality improves mechanism), joint portion 51 and side seal The separating distance in portion 4 is preferably 2mm or more, more preferably 3mm or more, and preferably 20mm hereinafter, more preferably 15mm with Under, more specifically, preferably 2mm or more 20mm are hereinafter, more preferably 3mm or more 15mm or less.In addition, from same viewpoint It sets out, joint portion 51 and the separating distance of the ora terminalis 82 of the open end 81 in directly on top waist opening portion 8 are preferably 1mm More than, more preferably 3mm or more, and preferably 20mm hereinafter, more preferably 15mm hereinafter, more specifically, preferably 1mm The above 20mm is hereinafter, more preferably 3mm or more 15mm or less.In addition, " separating distance " said here is to being unfolded and extending The distance that the diaper of state is measured, it is such as above-mentioned for " expansion and elongation state ".
In addition, in the present invention, the cut-out of exterior body and the formation at joint portion of above-mentioned side seal portion formation process are by making The exterior body is melted with heat source and is implemented, and the formation of protruding portion when diaper is worn can be carried out i.e. by the formation at the joint portion Can, it has used the melting of the exterior body of heat source is for example above-mentioned to be not limited to irradiate laser to exterior body, has passed through others in addition to this Method, for example, the exterior body that has used well known heat roller device etc. heating crimping or used well known ultrasonic vibration apparatus Deng ultrasonic activation etc. is implemented to exterior body can also implement.
Figure 10 indicates the second embodiment (Breeches type disposable diaper 50B) of the Breeches type disposable diaper of the present invention. The difference of height 53 that the diaper 50B of second embodiment improves mechanism as side seal portion visuality in addition to making above-mentioned diaper 1 have Point other than constituted in the same manner as diaper 1.
Further the diaper 50B of second embodiment is illustrated, in diaper 50B as shown in Figure 10, forms waist The ora terminalis 82R of the exterior body 3 of the ora terminalis 82F of the exterior body 3 of the predecessor F of the open end of opening portion 8 and rear body R is in diaper 50B Upper and lower directions (upper and lower directions of Figure 10) be not staggered in same position, generated in the top in side seal portion 4 and be staggered and cause by this Two ora terminalis 82F, 82R between difference of height 53, which improves mechanism as side seal portion visuality and plays a role.That is, Because of the presence of difference of height 53, the visual visual raising in side seal portion 4 in diaper 50B.In addition, after in diaper 50B body R end Edge 82R is located at the position against the top ora terminalis 82F than predecessor F, in contrast, can also the ora terminalis 82F of predecessor F be located at than rear body Position against the top the ora terminalis 82R of R.
In the manufacturing method of the diaper 50B of second embodiment, above-mentioned diaper non-individual body 10 (band-like exterior body 3) In manufacture, side seal portion visuality is formed before above-mentioned side seal portion formation process and improves mechanism (difference of height 53).Specifically, exist When the predecessor side of exterior body 3 and rear body being made to stress folded in above-mentioned coincidence pressurization operation, i.e., as shown in Figure 11 (a) or Figure 11 (b), By band-like exterior body 3 when its width direction folds, do not make alongst (left and right directions of Figure 11) of the exterior body 3 Two ora terminalis 82F, 82R it is consistent with each other and be intentionally staggered, difference of height 53 is thus formed as shown in Figure 11 (c).The offset (one The separating distance of a ora terminalis and another ora terminalis) it is equivalent to the height t (referring to Fig.1 0) of difference of height 53.As in formation difference of height The method of " two ora terminalis alongst of exterior body are intentionally staggered each other " when 53, there are such as Figure 11 (a) institutes Following methods b shown in the following methods a and Figure 11 (b) shown, can using which kind of.
Method a:In the imagining center line CL that diaper X is divided into two using longitudinal direction as boundary line, the length of longitudinal X is in predecessor In the case that F and rear body R are equal, not using imagining center line CL as fold line, and by it is parallel with imagining center line CL in addition Method (referring to Fig.1 1 (a)) of the straight line as fold line Q.In the embodiment shown in Figure 11 (a), from making as shown in Figure 10 The ora terminalis 82R of body R is located at from the viewpoint of the positions against the top the ora terminalis 82F than predecessor F afterwards, and fold line Q compares imagining center line CL is staggered to the side predecessor F (veutro portion 1A).That is, diaper 50B (is divided into two by embodiment shown in Figure 11 (a) with longitudinal direction Imagining center line CL is boundary line, the length of the longitudinal X situation equal in predecessor F and rear body R) in, band-like 3 (diaper of exterior body Non-individual body 10) two ora terminalis 82F, 82R alongst it is intentional each other be staggered, be by will be put down with imagining center line CL Capable other straight line is formed the band-like exterior body 3 in fold line folding as fold line.
Method b:Keep the length of longitudinal X different with drosal part 1B in veutro portion 1A, crotch 1C is divided into two in longitudinal X Methods (referring to Fig.1 1 (b)) of the imagining center line CL ' as fold line.That is, in the embodiment shown in Figure 11 (b), band Intentional be staggered is under to two ora terminalis 82F, 82R alongst of the exterior body 3 (diaper non-individual body 10) of shape each other What the mode of stating was formed, i.e.,:Make the length of longitudinal X different with drosal part 1B in veutro portion 1A in diaper 50B, by diaper 50B The imagining center line CL ' that are divided into two in longitudinal X of crotch 1C be used as fold line, by the band-like exterior body 3 in the fold line (imagining center line CL ') is folded.In the embodiment shown in Figure 11 (b), from ora terminalis 82R for making rear body R as shown in Figure 10 From the viewpoint of the positions against the top the ora terminalis 82F than predecessor F, the length of veutro portion 1A longitudinal direction X compared with drosal part 1B is short. In addition, the imaginary centres that crotch will 1C the imagining center line CL ' being divided into two in longitudinal X and diaper 1 be divided into two in longitudinal X Line is consistent.
From the viewpoint of visual raising visually from balance side seal portion 4 and the shape as diaper 50B maintain, height Poor 53 it is highly preferred be 2mm or more, more preferably 3mm or more, and preferably 20mm hereinafter, more preferably 15mm hereinafter, More specifically, preferably 2mm or more 20mm are hereinafter, more preferably 3mm or more 15mm or less.In addition, " height said here The height of difference " is the height being measured in the diaper to nature.
Figure 12 indicates the third embodiment (Breeches type disposable diaper 50C) of the Breeches type disposable diaper of the present invention Major part, that is, label 54 (side seal portion visuality improve mechanism) and its near.The diaper 50C of third embodiment in addition to making on The diaper 1 stated is constituted other than with the label 54 as side seal portion visuality raising mechanism, this puts in the same manner as diaper 1.
Further the diaper 50C of third embodiment is illustrated, in diaper 50C as shown in figure 12, in predecessor F The outer surface (non-skin abutment face) of the exterior body 3 of (veutro portion 1A) and near side seal portion 4, and in rear body R (drosal parts It the outer surface (non-skin abutment face) of exterior body 3 1B) and can visually be identified near side seal portion 4, to be formed through Label 54, the label 54 improve mechanism as side seal portion visuality and play a role.That is, because of the presence of label 54 in diaper 50C, The visual visual raising in side seal portion 4.
Label 54 is as shown in figure 12, the open end 81 near side seal portion 4 and for waist opening portion 8 or folder near it It side seal portion 4 to be asymmetrically formed one by one respectively in both sides (sides predecessor F and the sides rear body R), there is heart in vertical view.From more reliable From the viewpoint of ground improves the visual visuality in the side seal portion 4 realized by label 54, the separation in label 54 and side seal portion 4 away from From preferably 1mm or more, more preferably 5mm or more, and preferably 30mm hereinafter, more preferably 25mm hereinafter, it is more specific and Speech, preferably 1mm or more 30mm are hereinafter, more preferably 5mm or more 25mm or less.In addition, from the viewpoint of equally, label 54 Separating distance with the ora terminalis 82 of the open end 81 in directly on top waist opening portion 8 is preferably 1mm or more, more preferably 5mm or more, and preferably 60mm hereinafter, more preferably 50mm hereinafter, more specifically, preferably 1mm or more 60mm hereinafter, More preferably 5mm or more 50mm or less.In addition, " separating distance " said here be to expansion and elongation state diaper into The distance that row measures, it is such as above-mentioned for " expansion and elongation state ".
In the manufacturing method of the diaper 50C of third embodiment, in above-mentioned (the band-like exterior body of diaper non-individual body 10 3) in manufacture, side seal portion visuality is formed before above-mentioned side seal portion formation process and improves mechanism (label 54).Specifically, The predecessor side and rear body for making exterior body 3 in above-mentioned coincidence pressurization operation stress prestack, that is, by band-like exterior body 3 in its width Before spending direction folding, label 54 is formed by being embossed to process or print in the predetermined portion of the exterior body 3.Be embossed processing method and Printing process is not particularly limited, and can suitably select well known method respectively.
It is as shown in figure 14, multiple at this as exterior body 3 using composite extensible member 3A shown in Figure 13 in diaper 50C It closes in the embossing processing utilized in the manufacture of extensible member 3A and forms label 54.Composite extensible member 3A have following structures 1~ Structure 3.As composite extensible member 3A, such as the Japanese Unexamined Patent Publication 2009-118986 public affairs of the applicant's first to file can be applicable in Composite extensible member described in report.In addition, the composite extensible member 3A of following 1~structures of structure 3 is as first embodiment It is also used without limitation with the exterior body 3 of second embodiment.
Structure 1:Outer-skin sheet 35 and inner layer piece 36 are in the telescopic direction (lateral Y) of composite extensible member 3A and orthogonal to that Direction (longitudinal X) be interconnected by interrupted multiple joint portions 37.
Structure 2:Multiple elastomeric elements 5,6 configure in a manner of not by joint portion 37 respectively, are removing elastomeric element 5, the part at the both ends (near side seal portion 4 etc.) of 6 length direction is not affixed to outer-skin sheet 35 and inner layer piece 36.
Structure 3:Outer-skin sheet 35 and inner layer piece 36 be formed under natural conditions across each in composite extensible member 3A respectively Multiple pleats 38 that multiple elastomeric elements 5,6 are extended continuously.
Figure 14 indicates the process that label 54 is formed in the manufacture of composite extensible member 3A.The label formation process is (compound The manufacturing process of extensible member) diaper non-individual body 10 shown in Fig. 5 manufacturing process in, leaned on than a pair of of niproll 11,11 The downstream side of conveying direction and absorbent main body 2 configures preceding implementation.More specifically, as shown in figure 14, using being configured at than one By the knurling rolls 12 of the position in the downstream side of conveying direction and its anvil roller 13 is born to niproll 11,11, by band-like exterior Body 3 imports between two rollers 12,13, forms joint portion 37 in the exterior body 3, and in the predetermined portions (cut-out for forming the side seal portion 4 Predetermined portions) label 54 is formed near 10C.Band-like exterior body 3 is to constitute the outer-skin sheet 35 and knurling rolls 12 of the exterior body 3 The mode of contact imports between two rollers 12,13.The circumferential surface of the anvil roller 13 contacted with band-like exterior body 3 (inner layer piece 36) is smooth , in contrast, in the circumferential surface of the knurling rolls 12 contacted with band-like exterior body 3 (outer-skin sheet 35), with composite extensible member 3A Joint portion 37 be correspondingly provided with multiple embossing pins 14, and with label 54 be correspondingly provided with and 54 vertical view of label The label of the front end of shape (cardioid) same shape, which is formed, uses pin 15, by with the front ends of these pins 14,15 from outer-skin sheet 35 sides press exterior body 3, form joint portion 37 and label 54.Two pins 14,15 can be heating embossing pin, can also be ultrasound Wave pressure cost.In this way, by importing band-like exterior body 3 between two rollers 12,13, the composite telescopic by being formed with label 54 is obtained The band-like exterior body 3 that component 3A is constituted.In addition, troublesome from wrinkle etc. is generated in absorbent main body 2 when preventing diaper 50C from wearing From the point of view of viewpoint, the part Chong Die with absorbent main body 2 of elastomeric element 5,6 can be formed more carefully cut off the elastomeric element 5, 6 etc. come inhibit its retractility embodiment non-telescoping portion.The non-telescoping portion of the elastomeric element 5,6 can use two rollers 12,13 with The formation at joint portion 37 and label 54 is formed simultaneously, or can also use the cut-out different from two rollers 12,13 after they are formed Roller (not shown) is formed.In the case of the former, non-telescoping portion's shape as elastomeric element 5,6 is formed in the circumferential surface of knurling rolls 12 At the protrusion of mechanism, cutter etc..
In addition, the label that the side seal portion visuality as the present invention improves mechanism is as shown in figure 12, it is not limited to cardioid, is bowed It is not particularly limited, can be made of figure, mark, character, pattern or combination thereof etc. depending on shape.For example, such as Figure 15 (a) It is shown, when diaper is taken after from wearer's body, it should be expressly identified as the position in the side seal portion 4 at avulsed position, energy It enough clips side seal portion 4 and forms the label 54A being made of mark (arrow) in both sides.In addition, the label of the present invention is such as by Figure 15 (b) Shown in mark constitute label 54A, can also be formed along the overall length in side seal portion 4 multiple.As its of label of the invention Its concrete example indicates the label 54B being made of character in Figure 15 (c), in addition, being indicated by mark (arrow) in Figure 15 (d) The combination of the label 54A of composition and the label 54B being made of character.
More than, for the present invention is based on embodiments thereofs to be illustrated, the present invention is not limited to the above embodiments, not It can be suitably changed in the range of disengaging spirit of the invention.Although for example, laminate such as Fig. 6 (a) shown in be overlapped 4 pieces, But 2,3 or 5 or more pieces can also be overlapped.In addition, in order not to generate gauffer, loosely by diaper non-individual body volume 10 It is around on cylinder roller 23 (bearing part 21), can also make laser type engagement device 20 that there is the tension of control diaper non-individual body 10 Mechanism.In addition, in order to remove the gas generated by the irradiation of laser from opening portion 27, laser type engagement device can also be made 20 have the mechanism that air is blown to the exhaust gear of the gas or opening portion 27.In addition, laser type engagement device 20 can also have It is useful for the mechanism of resin that removal is attached on the bearing surface with diaper non-individual body 10 of pressing component 24 etc..
In addition, the exterior body 3 of the above embodiment is divided as shown in figure 4, not pressing veutro portion 1A and drosal part 1B, tool There is the continuous shape such as hourglass-shaped throughout veutro portion 1A, crotch 1C and drosal part 1B, but the exterior body of the present invention is not limited to This continuous shape, such as the veutro chip part for being configured at the veutro (front side) of wearer can also be divided into and be configured at and worn The dorsal sheet member of the person's of wearing back side (rear side), absorbent main body erection are fixed on the two chip parts.It is disconnected including this segmentation The above-mentioned coincidence pressurization operation of the manufacturing method of the Breeches type disposable diaper of the exterior body of type, makes to be fixed with absorbent main body The predecessor side (band-like veutro chip part) of band-like exterior body and rear body side (band-like dorsal sheet member) overlapping, make overlapping The predetermined position for forming side seal portion of the exterior body (two chip parts) becomes pressurized state.
In addition, as shown in figure 5, by band-like exterior body 3 before above-mentioned coincidence pressurization operation is implemented in the above embodiment It is respective along conveying direction along both sides 3a, 3a of conveying direction, i.e., band-like outer-skin sheet 35 and band-like inner layer piece 36 Both sides turned back in a manner of the length direction both ends for covering absorbent main body 2, but as band-like outer-skin sheet 35, use The length of width direction (direction orthogonal to the longitudinal direction) piece longer than band-like inner layer piece 36, makes two pieces 35,36 weights It can also be by the extension of the outer-skin sheet 35 only extended outward from the lateral margin of inner layer piece 36 to cover absorbent main body 2 when folded The mode at length direction both ends is turned back.In this case, the waist opening portion 8 of the cut-out predetermined portions 10C of diaper non-individual body 10 Open end and its nearby be 6 layers of structure division for overlapping with 6 pieces, part in addition to this is be overlapped 4 pieces 4 layers Structure division.In addition, both sides 3a, 3a along conveying direction of band-like exterior body 3, that is, band-like outer-skin sheet 35 and band-like Inner layer piece 36 can not also be folded each along the both sides of conveying direction.
Side seal portion visuality alternatively, it is also possible to combine above-mentioned first embodiment~third embodiment improves mechanism and uses In Breeches type disposable diaper.The above-mentioned part that only an embodiment has suitably can mutually utilize completely.
About above-mentioned embodiments of the present invention, note content (Breeches type disposable diaper, shorts below are also disclosed The manufacturing method of type disposable diaper).
(1)
A kind of Breeches type disposable diaper, it is characterised in that:
The absorbent main body is fixed including absorbent main body and the non-skin abutment face side for being configured at the absorbent main body Exterior body,
The Breeches type disposable diaper is by the exterior body of the left and right sides edge of the exterior body of predecessor and rear body Left and right sides edge engages and forms a pair of of side seal portion, waist opening portion and a pair of of leg opening part,
The side seal portion visuality visual when the diaper is worn is low, and having near the side seal portion can improve The visual visual side seal portion visuality in the side seal portion improves mechanism.
(2)
The Breeches type disposable diaper that above-mentioned (1) is recorded, above-mentioned side seal portion is in the visual under natural conditions of above-mentioned diaper It is visual low.
(3)
The Breeches type disposable diaper that above-mentioned (1) or (2) is recorded, above-mentioned side seal portion visuality improve mechanism and are located at above-mentioned waist The open end of portion opening portion or its near.
(4)
The Breeches type disposable diaper that any one of above-mentioned (1)~(3) are recorded, near the side seal portion and is described The open end in waist opening portion or its near, be formed with thickness direction engage the predecessor the exterior body and it is described after The joint portion of the exterior body of body, and formed the waist opening portion in the side seal portion open end part in the diaper It is protruded outward compared with its peripheral portion when wearing and forms protruding portion, which improves machine as side seal portion visuality Structure plays a role.
(5)
The Breeches type disposable diaper that above-mentioned (4) are recorded, the separating distance at above-mentioned joint portion and above-mentioned side seal portion are preferably 2mm or more, more preferably 3mm or more, and preferably 20mm hereinafter, more preferably 15mm hereinafter, more specifically, preferably 2mm or more 20mm hereinafter, more preferably 3mm or more 15mm hereinafter,
Above-mentioned joint portion and the separating distance of the ora terminalis of the open end in above-mentioned waist opening portion are preferably 1mm or more, more Preferably 3mm or more, and preferably 20mm hereinafter, more preferably 15mm hereinafter, more specifically, preferably 1mm or more 20mm is hereinafter, more preferably 3mm or more 15mm or less.
(6)
The Breeches type disposable diaper that any one of above-mentioned (1)~(5) are recorded, forms the open end in the waist opening portion Upper and lower directions of the ora terminalis of the exterior body of the ora terminalis of the exterior body of portion, the described predecessor and the rear body in the diaper It is staggered, the intermarginal difference of height in both ends caused by described be staggered is generated in the top in the side seal portion, described in which is used as Side seal portion visuality improves mechanism and plays a role.
(7)
The Breeches type disposable diaper that above-mentioned (6) are recorded, the ora terminalis of above-mentioned rear body is positioned at more top than the ora terminalis of above-mentioned predecessor The position of side.
(8)
The ora terminalis of the Breeches type disposable diaper that above-mentioned (6) are recorded, above-mentioned predecessor is top positioned at the ora terminalis than above-mentioned rear body The position of side.
(9)
The Breeches type disposable diaper that any one of above-mentioned (6)~(8) are recorded, above-mentioned difference of height is preferably 2mm or more, more Preferably 3mm or more, and preferably 20mm hereinafter, more preferably 15mm hereinafter, more specifically, preferably 2mm or more 20mm is hereinafter, more preferably 3mm or more 15mm or less.
(10)
The Breeches type disposable diaper that any one of above-mentioned (1)~(9) are recorded, the predecessor the exterior body it is outer Surface and near the side seal portion, or the outer surface of the exterior body of body and near the side seal portion in the rear, It is formed through the label that can visually identify, which improves mechanism as side seal portion visuality and play a role.
(11)
The Breeches type disposable diaper that above-mentioned (10) are recorded, the label clip the side seal portion in the both sides (predecessor Side and the rear body side) it is asymmetrically formed one by one respectively.
(12)
The Breeches type disposable diaper that above-mentioned (10) or (11) are recorded, above-mentioned label and the separating distance in above-mentioned side seal portion are excellent Be selected as 1mm or more, more preferably 5mm or more, and preferably 30mm hereinafter, more preferably 25mm hereinafter, more specifically, it is excellent 1mm or more 30mm are selected as hereinafter, more preferably 5mm or more 25mm or less.
(13)
The Breeches type disposable diaper that any one of above-mentioned (10)~(12) are recorded, above-mentioned label with it is directly on top upper The separating distance for stating the ora terminalis of the open end in waist opening portion is preferably 1mm or more, more preferably 5mm or more, and preferably For 60mm hereinafter, more preferably 50mm is hereinafter, more specifically, preferably 1mm or more 60mm are hereinafter, more preferably 5mm or more 50mm or less.
(14)
The Breeches type disposable diaper that any one of above-mentioned (10)~(13) are recorded, above-mentioned label is figure, mark, word Symbol, pattern or combination thereof.
(15)
The Breeches type disposable diaper that any one of above-mentioned (10)~(14) are recorded, above-mentioned label is along above-mentioned side seal portion Overall length is formed with multiple.
(16)
The Breeches type disposable diaper that any one of above-mentioned (1)~(14) are recorded, the outer rim in the side seal portion be formed as to The convex arcuation in the inside of the exterior body, and it is being formed with composition including the outer rim and than it by the position of the inside of the exterior body Weld portion between multiple of the exterior body.
(17)
The Breeches type disposable diaper that above-mentioned (16) are recorded, the weld portion is in the lateral sectional view along the diaper In, go the width of the weld portion to broaden gradually towards central portion in thickness direction.
(18)
The Breeches type disposable diaper that above-mentioned (16) or (17) are recorded, the weld portion is in the transverse direction along the diaper In sectional view, be formed as crescent or semilune.
(19)
The Breeches type disposable diaper that any one of above-mentioned (16)~(18) are recorded, the waist when the diaper is worn Under the unfolded state of opening portion, the corner of the side edge part of the exterior body of veutro portion side and the exterior body of drosal part side Side edge part corner it is close, separating distance between two corners reduces, and the weld portion positioned at two corners between is because being located at than this Weld portion leans on the two corners position in the outside of the diaper, close to each other, is difficult to touch and to be difficult to from outside with hand The state seen.
(20)
The Breeches type disposable diaper that any one of above-mentioned (1)~(19) are recorded, the exterior body include:Form the urine The outer-skin sheet of the outer surface of cloth;Be configured at the outer-skin sheet inner surface side, formed diaper inner surface inner layer piece;Be fixed on Multiple Filamentous or band-like elastomeric elements between two panels.
(21)
The Breeches type disposable diaper that any one of above-mentioned (1)~(20) are recorded, the exterior body, as resin material packet The synthetic resin of polyethylene, polyethylene terephthalate, polyacrylic weldability is included, and the exterior body includes non-woven fabrics, film Or the laminate of non-woven fabrics and film, the non-woven fabrics are hot-wind nonwoven cloth, hot-rolling non-woven fabrics, spunlace non-woven cloth, spunbonded type nonwoven Cloth or spray fusing non-woven fabrics.
(22)
The Breeches type disposable diaper that any one of above-mentioned (1)~(21) are recorded, composite extensible is used as exterior body Part, the composite extensible member include:Form the outer-skin sheet of the outer surface of the diaper;Be configured at the outer-skin sheet inner surface side, Form the inner layer piece of the inner surface of the diaper;The multiple Filamentous or band-like elastomeric elements being fixed between two panels, and this is compound Extensible member has following 1~structures of structure 3:
Structure 1:The outer-skin sheet and the inner layer piece are in the telescopic direction of the composite extensible member and orthogonal to that Direction be interconnected by interrupted multiple joint portions;
Structure 2:Multiple elastomeric elements configure in a manner of not by the joint portion respectively, are removing the elasticity The part at the both ends of the length direction of component is not affixed to the outer-skin sheet and the inner layer piece;
Structure 3:The outer-skin sheet and the inner layer piece are respectively in the formation under natural conditions of the composite extensible member There are the multiple pleats being extended continuously across each multiple elastomeric elements.
(23)
Any one of above-mentioned (1)~(22) record Breeches type disposable diaper, the exterior body press veutro portion and Drosal part is divided, and is had throughout veutro portion, the continuous shape such as hourglass-shaped of crotch and drosal part.
(24)
The Breeches type disposable diaper that any one of above-mentioned (1)~(22) are recorded, the exterior body, which is divided into, to be configured at The dorsal sheet member of the veutro chip part of the veutro (front side) of wearer and the back side (rear side) for being configured at wearer, the absorption Property main body erection be fixed on the two chip parts.
(25)
The manufacturing method of Breeches type disposable diaper is the pants-type disposable that any one of above-mentioned (1)~(24) are recorded The manufacturing method of diaper, including:
The absorbent main body is fixed on the band-like exterior body by main body fixed step;
Pressurization operation is overlapped, the predecessor side for the band-like exterior body for being fixed with the absorbent main body and rear body side are made Overlapping makes the predetermined position for forming side seal portion of the exterior body of overlapping become pressurized state;With
Side seal portion formation process, the predetermined position in formation side seal portion of the cut-out in pressurized state, while making to pass through The cut-out and the cut-out edge of multiple exterior bodies in pressurized state that generates are fused to each other and form the side seal portion,
Until before to the side seal portion, formation process terminates after the main body fixed step, set in the exterior body It sets side seal portion visuality and improves mechanism.
(26)
The manufacturing method for the Breeches type disposable diaper that above-mentioned (25) are recorded, it is described outer in side seal portion formation process Fill body cut-out by with heat source make the exterior body melting come by implement.
(27)
The manufacturing method for the Breeches type disposable diaper that above-mentioned (26) are recorded, using the heat source the exterior body it is molten It melts, is shaken by irradiating laser to the exterior body, carrying out the heating crimping of the exterior body or apply ultrasonic wave to the exterior body It is dynamic and implementation.
(28)
The manufacturing method for the Breeches type disposable diaper that any one of above-mentioned (25)~(27) are recorded is manufacturing above-mentioned (4) In the case of the Breeches type disposable diaper of record,
By making exterior body melting implement the cut-out of the exterior body in side seal portion formation process with heat source With the formation at the joint portion, the protruding portion when formation at the joint portion enables the diaper to wear is formed.
(29)
The manufacturing method for the Breeches type disposable diaper that any one of above-mentioned (25)~(27) are recorded is manufacturing above-mentioned (6) In the case of the Breeches type disposable diaper of record,
In the coincidence pressurization operation, make along the exterior body when being overlapped the predecessor side of the exterior body and rear body side Two ora terminalis of length direction are inconsistent each other and are intentionally staggered.
(30)
The manufacturing method for the Breeches type disposable diaper that above-mentioned (29) are recorded, the diaper is divided into two with longitudinal direction Imagining center line CL be boundary described in exterior body longitudinal direction length the predecessor and it is described afterwards body it is equal in the case of, with this Other straight line parallel imagining center line CL is fold line, (should be in imagining center line CL by the band-like exterior body The misdescription of " fold line as the other straight line parallel with imagining center line CL ") it folds, to make along the exterior Two ora terminalis of the length direction of body are intentionally staggered each other.
(31)
The manufacturing method for the Breeches type disposable diaper that above-mentioned (29) are recorded makes the exterior body longitudinal in the diaper Length it is different in veutro portion and drosal part, be in the imagining center line CL ' being longitudinally divided into two by the crotch of the diaper Fold line folds the band-like exterior body, at imagining center line CL ' to make the length direction along the exterior body Two ora terminalis each other be intentionally staggered.
(32)
The manufacturing method for the Breeches type disposable diaper that any one of above-mentioned (25)~(27) are recorded is manufacturing above-mentioned (10) In the case of the Breeches type disposable diaper of record,
In the coincidence pressurization operation, be overlapped before predecessor side and the rear body side of the exterior body, by be embossed processing or The predetermined portion for being printed on the exterior body forms the label.
(33)
The manufacturing method for the Breeches type disposable diaper that above-mentioned (32) are recorded, using being configured at than being used to form the exterior A pair of of niproll of body is directed through by the knurling rolls and its anvil roller of bearing of the position in the downstream side of conveying direction between two rollers The band-like exterior body of a pair of niproll, forms the piece (outer-skin sheet and inner layer piece) for constituting the exterior body on the exterior body Joint portion each other, and form the mark near the predetermined portions in the formation side seal portion (cut-out predetermined portions) Note.
(34)
The manufacturing method for the Breeches type disposable diaper that any one of above-mentioned (25)~(33) are recorded is pressurizeed in the coincidence In process, it is made without the urine that the presoma for the Breeches type disposable diaper to form the side seal portion is connected in one direction Cloth non-individual body, in side seal portion formation process, by laser irradiation by the diaper non-individual body (band-like above-mentioned exterior body) It is each separate component to cut off (fusing), while by the cut-out of the multiple exterior bodies in pressurized state generated by the cut-out Edge is fused to each other, and is continuously manufactured by the Breeches type disposable diaper for including the exterior body with a pair of side seal portion.
(35)
The manufacturing method for the Breeches type disposable diaper that above-mentioned (34) are recorded carries out the side using laser type engagement device Envelope portion formation process, the laser type engagement device include have laser can by bearing part and press section of the light by portion Part,
Diaper non-individual body described in continuous conveying, and a face of the diaper non-individual body is made to pass through portion with the light The bearing part abut, to become because of the bearing part and the pressing component diaper non-individual body of pressurized state from Laser is irradiated in the bearing part side via the light by portion, thus cuts off the diaper non-individual body, while making to produce by the cut-out The cut-out edge of multiple raw in pressurized state is fused to each other, and forms the side seal portion.
(36)
The manufacturing method for the Breeches type disposable diaper that above-mentioned (35) are recorded, above-mentioned bearing part form cylindrical shape, as Above-mentioned light has the opening portion for penetrating through the slot shape of the bearing part in thickness direction, the opening portion should in cylindric by portion It is formed with to the circumferentially spaced specified interval of bearing part multiple.
(37)
The manufacturing method for the Breeches type disposable diaper that above-mentioned (35) or (36) are recorded, above-mentioned laser type engagement device include Belt pressue device with cricoid press belt, above-mentioned pressing component are the press belt.
(38)
The manufacturing method for the Breeches type disposable diaper that any one of above-mentioned (34)~(37) are recorded, as the laser, The laser of the wavelength of piece fever is absorbed and made using the piece (outer-skin sheet and inner layer piece) that can be configured the exterior body.
(39)
The manufacturing method for the Breeches type disposable diaper that any one of above-mentioned (28) and above-mentioned (34)~(38) are recorded, in institute It states in side seal portion formation process, in irradiation for the predetermined of the formation side seal portion of the exterior body of pressurized state will to be in Before and after the laser of position cut-out, the joint portion is formed in the exterior body using identical laser.
(40)
The manufacturing method for the Breeches type disposable diaper that any one of above-mentioned (35)~(39) are recorded, connects in the laser type The predetermined portion for attaching together the bearing part set (penetrates through the slot of the bearing part as above-mentioned light by portion in thickness direction Near the opening portion of shape) laser of perforation setting in advance can by joint portion formation light transmissive portion, from the supporting part Part side is irradiated before laser or is shone to the exterior body (diaper non-individual body) of the pressurized state via the opening portion of slot shape After penetrating, laser is irradiated from the bearing part side via joint portion formation light transmissive portion, thus under the pressurized state, The exterior body of the predecessor and the rear body are engaged with the joint portion formation part corresponding with light transmissive portion of the exterior body The exterior body.
Industrial utilizability
According to the present invention, provide the visual visuality in side seal portion high Breeches type disposable diaper.

Claims (34)

1. a kind of Breeches type disposable diaper, it is characterised in that:
Including absorbent main body and it is configured at the non-skin abutment face side of the absorbent main body, fixes the exterior of the absorbent main body Body,
The Breeches type disposable diaper is by the left and right of the left and right sides edge of the exterior body of predecessor and the exterior body of rear body Both sides edge engages and forms a pair of of side seal portion, waist opening portion and a pair of of leg opening part,
The side seal portion visuality visual when the diaper is worn is low, and the side can be improved by having near the side seal portion The visual visual side seal portion visuality in envelope portion improves mechanism,
The outer rim in the side seal portion is formed as to the convex arcuation in the inside of the exterior body, and including the outer rim and than its by should The position of the inside of exterior body is formed with the weld portion between multiple that constitute the exterior body.
2. Breeches type disposable diaper as described in claim 1, it is characterised in that:
The weld portion goes the weld portion in thickness direction in the lateral sectional view along the diaper towards central portion Width broadens gradually.
3. Breeches type disposable diaper as claimed in claim 1 or 2, it is characterised in that:
The weld portion is formed as crescent or semilune in the lateral sectional view along the diaper.
4. Breeches type disposable diaper as claimed in claim 1 or 2, it is characterised in that:
When the diaper is worn under waist opening portion unfolded state, the side edge part of the exterior body of veutro portion side Corner and drosal part side the exterior body side edge part corner it is close, separating distance between two corners reduces, and is located at two The weld portion between corner because positioned at than the weld portion by the outside of the diaper position, two corners close to each other, It is difficult to touch and to be difficult to the state seen from outside with hand.
5. Breeches type disposable diaper as claimed in claim 1 or 2, it is characterised in that:
The side seal portion is low in the visuality visual under natural conditions of the diaper.
6. Breeches type disposable diaper as claimed in claim 1 or 2, it is characterised in that:
The side seal portion is when the diaper is worn unlike the peripheral portion in the side seal portion to prominent on the outside of diaper.
7. Breeches type disposable diaper as claimed in claim 1 or 2, it is characterised in that:
The side seal portion be by the band-like exterior body to the predecessor and it is described after body it is band-like described outer The laminated body of dress body irradiates laser and the laminated body is cut off to the cut-out edge for being formed by two exterior bodies.
8. Breeches type disposable diaper as claimed in claim 1 or 2, it is characterised in that:
Side seal portion visuality improve mechanism be located at the waist opening portion open end or its near.
9. Breeches type disposable diaper as claimed in claim 1 or 2, it is characterised in that:
Near the side seal portion and for the waist opening portion open end or its near, be formed with and connect in thickness direction The joint portion of the exterior body of the predecessor and the exterior body of the rear body is closed, and the waist for forming the side seal portion is opened The part of the open end of oral area protrudes outward compared with its peripheral portion when the diaper is worn and forms protruding portion, this is prominent Go out portion to play a role as side seal portion visuality raising mechanism.
10. Breeches type disposable diaper as claimed in claim 1 or 2, it is characterised in that:
The ora terminalis of exterior body that form the open end in the waist opening portion, the predecessor and it is described after body this is outer The ora terminalis of dress body is staggered in the upper and lower directions of the diaper, is generated by the caused both ends that are staggered in the top in the side seal portion Intermarginal difference of height, the difference of height improve mechanism as side seal portion visuality and play a role.
11. Breeches type disposable diaper as claimed in claim 10, it is characterised in that:
The ora terminalis of body is located at the position more against the top than the ora terminalis of the predecessor after described.
12. Breeches type disposable diaper as claimed in claim 10, it is characterised in that:
The ora terminalis of the predecessor is located at the position more against the top than the ora terminalis of the rear body.
13. Breeches type disposable diaper as claimed in claim 1 or 2, it is characterised in that:
In the outer surface of the exterior body of the predecessor and near the side seal portion, or exterior of body in the rear The outer surface of body and near the side seal portion, to be formed through the label that can visually identify, the label is as the side seal Portion's visuality improves mechanism and plays a role.
14. Breeches type disposable diaper as claimed in claim 13, it is characterised in that:
The label clips the side seal portion and is asymmetrically formed one by one respectively in predecessor side and rear body side.
15. Breeches type disposable diaper as claimed in claim 13, it is characterised in that:
One or two or more kinds of the label in the group being made of figure, mark, character and pattern.
16. Breeches type disposable diaper as claimed in claim 13, it is characterised in that:
The label is formed with multiple along the overall length in the side seal portion.
17. Breeches type disposable diaper as claimed in claim 1 or 2, it is characterised in that:
The exterior body includes:Form the outer-skin sheet of the outer surface of the diaper;It is configured at the inner surface side of the outer-skin sheet, formed The inner layer piece of the inner surface of diaper;And the multiple Filamentous or band-like elastomeric elements being fixed between two panels.
18. Breeches type disposable diaper as claimed in claim 1 or 2, it is characterised in that:
The exterior body include as resin material in the group being made of polyethylene, polyethylene terephthalate and polypropylene One or two or more kinds of heat sealability synthetic resin, and the exterior body is non-woven fabrics.
19. Breeches type disposable diaper as claimed in claim 1 or 2, it is characterised in that:
Composite extensible member is used as exterior body, which includes:Form the outer layer of the outer surface of the diaper Piece;Be configured at the inner surface side of the outer-skin sheet, the inner surface for forming the diaper inner layer piece;The multiple silks being fixed between two panels Shape or band-like elastomeric element, and the composite extensible member has following 1~structures of structure 3:
Structure 1:The telescopic direction and orthogonal to that side of the outer-skin sheet and the inner layer piece in the composite extensible member It is interconnected to by interrupted multiple joint portions;
Structure 2:Multiple elastomeric elements configure in a manner of not by the joint portion respectively, are removing the elastomeric element Length direction both ends part, be not affixed to the outer-skin sheet and the inner layer piece;
Structure 3:The outer-skin sheet and the inner layer piece respectively the composite extensible member be formed under natural conditions across Multiple pleats that each multiple elastomeric elements are extended continuously.
20. Breeches type disposable diaper as claimed in claim 1 or 2, it is characterised in that:
The exterior body does not press veutro portion and drosal part is divided, and has throughout the hourglass-shaped of veutro portion, crotch and drosal part Continuous shape.
21. Breeches type disposable diaper as claimed in claim 1 or 2, it is characterised in that:
The exterior body is divided into the back of the body for being configured at the veutro chip part of the veutro of wearer and being configured at the back side of wearer Lateral plate component, the absorbent main body erection are fixed on the two chip parts.
22. a kind of manufacturing method of Breeches type disposable diaper is that the pants type described in any one of claim 1~21 is primary The manufacturing method of property diaper, which is characterized in that including:
The absorbent main body is fixed on the band-like exterior body by main body fixed step;
Pressurization operation is overlapped, the predecessor side for the band-like exterior body for being fixed with the absorbent main body and rear body is made to stress It is folded, so that the predetermined position for forming side seal portion of the exterior body of overlapping is become pressurized state;With
Side seal portion formation process, the predetermined position in formation side seal portion of the cut-out in pressurized state, while making to cut by this Disconnected and multiple exterior bodies in pressurized state of generation cut-out edges are fused to each other and form the side seal portion,
Until before formation process terminates to the side seal portion after the main body fixed step, institute is set in the exterior body It states side seal portion visuality and improves mechanism,
The cut-out of the exterior body in side seal portion formation process is implemented by so that the exterior body is melted with heat source.
23. the manufacturing method of Breeches type disposable diaper as claimed in claim 22, it is characterised in that:
Using the melting of the exterior body of the heat source, added by irradiating laser to the exterior body, carrying out the exterior body It is thermally compressed or ultrasonic activation is applied to the exterior body and is implemented.
24. the manufacturing method of the Breeches type disposable diaper as described in claim 22 or 23, it is characterised in that:
In the case of Breeches type disposable diaper described in manufacturing claims 9,
By making exterior body melting implement cut-out and the institute of the exterior body in side seal portion formation process with heat source The formation for stating joint portion, the protruding portion when formation at the joint portion enables the diaper to wear are formed.
25. the manufacturing method of the Breeches type disposable diaper as described in claim 22 or 23, it is characterised in that:
In the case of Breeches type disposable diaper described in manufacturing claims 10,
In the coincidence pressurization operation, the length along the exterior body is made when being overlapped the predecessor side of the exterior body and rear body side Two ora terminalis in direction are inconsistent each other and are intentionally staggered.
26. the manufacturing method of Breeches type disposable diaper as claimed in claim 25, it is characterised in that:
The length that imagining center line (CL) that the diaper is divided into two is boundary and exterior body longitudinal direction is existed with longitudinal direction In the case that the predecessor and the rear body are equal, using the other straight line parallel with imagining center line (CL) as fold line, The band-like exterior body is folded in the fold line, to make between two ora terminalis along the length direction of the exterior body Intentionally it is staggered.
27. the manufacturing method of Breeches type disposable diaper as claimed in claim 25, it is characterised in that:
Make the length of the exterior body longitudinal direction in veutro portion and drosal part difference in the diaper, the crotch of the diaper is existed The imagining center line being longitudinally divided into two (CL ') is fold line, by the band-like exterior body at the imagining center line (CL ') It folds, to make two ora terminalis along the length direction of the exterior body intentionally be staggered each other.
28. the manufacturing method of the Breeches type disposable diaper as described in claim 22 or 23, it is characterised in that:
In the case of Breeches type disposable diaper described in manufacturing claims 13,
It in the coincidence pressurization operation, is overlapped before predecessor side and the rear body side of the exterior body, processes or print by being embossed The label is formed in the predetermined portion of the exterior body.
29. the manufacturing method of Breeches type disposable diaper as claimed in claim 28, it is characterised in that:
Using a pair of of the niproll being configured at than being used to form the exterior body by the embossing of the position in the downstream side of conveying direction Roller and its anvil roller of bearing, have been directed through the band-like exterior body of a pair of niproll, the shape on the exterior body between two rollers At the joint portion between the piece for constituting the exterior body, and institute is formed near the predetermined portions in the formation side seal portion State label.
30. the manufacturing method of the Breeches type disposable diaper as described in claim 22 or 23, it is characterised in that:
In the coincidence pressurization operation, it is made without the presoma for the Breeches type disposable diaper to form the side seal portion Connected diaper non-individual body in one direction, in side seal portion formation process, by laser irradiation by the diaper non-individual body Be cut to each separate component, at the same by the cut-out edge of the multiple exterior bodies in pressurized state generated by the cut-out that This welding is continuously manufactured by the Breeches type disposable diaper for including the exterior body with a pair of side seal portion.
31. the manufacturing method of Breeches type disposable diaper as claimed in claim 30, it is characterised in that:
Side seal portion formation process is carried out using laser type engagement device, which includes pressing component and tool Have laser can by light by the bearing part in portion,
Diaper non-individual body described in continuous conveying, and make a face of the diaper non-individual body and pass through the institute in portion with the light Bearing part abutting is stated, to becoming the diaper non-individual body of pressurized state because of the bearing part and the pressing component from the branch It holds component side and laser is irradiated by portion via the light, thus cut off the diaper non-individual body, while making to generate by the cut-out The multiple cut-out edges in pressurized state are fused to each other, and form the side seal portion.
32. the manufacturing method of Breeches type disposable diaper as claimed in claim 31, it is characterised in that:
As the laser, the laser of the wavelength of piece fever is absorbed and made using the piece that can be configured the exterior body.
33. the manufacturing method of Breeches type disposable diaper as claimed in claim 31, it is characterised in that:
In side seal portion formation process, in irradiation for the formation side seal of the exterior body of pressurized state will to be in Before and after the laser of the predetermined position cut-out in portion, thickness direction is formed in the exterior body using identical laser and engages the predecessor The exterior body and it is described after body the exterior body joint portion.
34. the manufacturing method of the Breeches type disposable diaper as described in any one of claim 31~33, it is characterised in that:
The laser type engagement device the bearing part predetermined portion in advance penetrate through setting laser can by connect Conjunction portion formation light transmissive portion, from the bearing part side via the opening portion of slot shape to the exterior of the pressurized state Body irradiates before laser or after irradiation, irradiates laser from the bearing part side via joint portion formation light transmissive portion, thus exists Under the pressurized state, being somebody's turn to do for the predecessor is engaged in the joint portion formation part corresponding with light transmissive portion with the exterior body The exterior body of exterior body and the rear body.
CN201380068555.3A 2012-12-27 2013-12-18 Breeches type disposable diaper and its manufacturing method Active CN104884015B (en)

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JP2012284061A JP5750431B2 (en) 2012-12-27 2012-12-27 Pants-type disposable diaper and method for manufacturing the same
JP2012-284061 2012-12-27
PCT/JP2013/083839 WO2014103818A1 (en) 2012-12-27 2013-12-18 Underpants type disposable diaper and method for producing same

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CN104884015A (en) 2015-09-02

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