CN111867813A - 伸缩性复合片的制造方法、伸缩性复合片以及采用该伸缩性复合片的一次性穿戴物品 - Google Patents

伸缩性复合片的制造方法、伸缩性复合片以及采用该伸缩性复合片的一次性穿戴物品 Download PDF

Info

Publication number
CN111867813A
CN111867813A CN201880088142.4A CN201880088142A CN111867813A CN 111867813 A CN111867813 A CN 111867813A CN 201880088142 A CN201880088142 A CN 201880088142A CN 111867813 A CN111867813 A CN 111867813A
Authority
CN
China
Prior art keywords
elastic member
sheet
base material
composite sheet
stretchable composite
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.)
Granted
Application number
CN201880088142.4A
Other languages
English (en)
Other versions
CN111867813B (zh
Inventor
中村秀幸
藤田幸彦
喜多纹子
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.)
Zuiko Corp
Original Assignee
Zuiko Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Zuiko Corp filed Critical Zuiko Corp
Publication of CN111867813A publication Critical patent/CN111867813A/zh
Application granted granted Critical
Publication of CN111867813B publication Critical patent/CN111867813B/zh
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/15577—Apparatus or processes for manufacturing
    • A61F13/15585—Apparatus or processes for manufacturing of babies' napkins, e.g. diapers
    • A61F13/15593—Apparatus or processes for manufacturing of babies' napkins, e.g. diapers having elastic ribbons fixed thereto; Devices for applying the ribbons
    • A61F13/15601—Apparatus or processes for manufacturing of babies' napkins, e.g. diapers having elastic ribbons fixed thereto; Devices for applying the ribbons the ribbons being applied transversely to the direction of the movement of the webs the diapers are being made of
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B32B37/0076—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised in that the layers are not bonded on the totality of their surfaces
    • B32B37/0084—Point bonding
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/15577—Apparatus or processes for manufacturing
    • A61F13/15585—Apparatus or processes for manufacturing of babies' napkins, e.g. diapers
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/15577—Apparatus or processes for manufacturing
    • A61F13/15707—Mechanical treatment, e.g. notching, twisting, compressing, shaping
    • A61F13/15739—Sealing, e.g. involving cutting
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/15577—Apparatus or processes for manufacturing
    • A61F13/15804—Plant, e.g. involving several steps
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/45—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the shape
    • A61F13/49—Absorbent articles specially adapted to be worn around the waist, e.g. diapers
    • A61F13/49007—Form-fitting, self-adjusting disposable diapers
    • A61F13/49009—Form-fitting, self-adjusting disposable diapers with elastic means
    • A61F13/49019—Form-fitting, self-adjusting disposable diapers with elastic means the elastic means being placed longitudinally, transversely or diagonally over the article
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/45—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the shape
    • A61F13/49—Absorbent articles specially adapted to be worn around the waist, e.g. diapers
    • A61F13/49007—Form-fitting, self-adjusting disposable diapers
    • A61F13/49009—Form-fitting, self-adjusting disposable diapers with elastic means
    • A61F13/4902—Form-fitting, self-adjusting disposable diapers with elastic means characterised by the elastic material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/08—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using ultrasonic vibrations
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/08—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using ultrasonic vibrations
    • B29C65/083—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using ultrasonic vibrations using a rotary sonotrode or a rotary anvil
    • B29C65/086—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using ultrasonic vibrations using a rotary sonotrode or a rotary anvil using a rotary anvil
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/20—Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines
    • B29C66/21—Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines said joint lines being formed by a single dot or dash or by several dots or dashes, i.e. spot joining or spot welding
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/344—Stretching or tensioning the joint area during joining
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/40—General aspects of joining substantially flat articles, e.g. plates, sheets or web-like materials; Making flat seams in tubular or hollow articles; Joining single elements to substantially flat surfaces
    • B29C66/41—Joining substantially flat articles ; Making flat seams in tubular or hollow articles
    • B29C66/43—Joining a relatively small portion of the surface of said articles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/40—General aspects of joining substantially flat articles, e.g. plates, sheets or web-like materials; Making flat seams in tubular or hollow articles; Joining single elements to substantially flat surfaces
    • B29C66/41—Joining substantially flat articles ; Making flat seams in tubular or hollow articles
    • B29C66/43—Joining a relatively small portion of the surface of said articles
    • B29C66/433—Casing-in, i.e. enclosing an element between two sheets by an outlined seam
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General 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
    • B29C66/72—General 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
    • B29C66/729—Textile or other fibrous material made from plastics
    • B29C66/7294—Non woven mats, e.g. felt
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General 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
    • B29C66/73—General 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
    • B29C66/739—General 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
    • B29C66/7392—General 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/81—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps
    • B29C66/814—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps
    • B29C66/8141—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined
    • B29C66/81433—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined being toothed, i.e. comprising several teeth or pins, or being patterned
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/83—General aspects of machine operations or constructions and parts thereof characterised by the movement of the joining or pressing tools
    • B29C66/834—General 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
    • B29C66/8341—Roller, cylinder or drum types; Band or belt types; Ball types
    • B29C66/83411—Roller, cylinder or drum types
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/83—General aspects of machine operations or constructions and parts thereof characterised by the movement of the joining or pressing tools
    • B29C66/834—General 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
    • B29C66/8341—Roller, cylinder or drum types; Band or belt types; Ball types
    • B29C66/83411—Roller, cylinder or drum types
    • B29C66/83415—Roller, cylinder or drum types the contact angle between said rollers, cylinders or drums and said parts to be joined being a non-zero angle
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/83—General aspects of machine operations or constructions and parts thereof characterised by the movement of the joining or pressing tools
    • B29C66/834—General 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
    • B29C66/8351—Jaws mounted on rollers, cylinders, drums, bands, belts or chains; Flying jaws
    • B29C66/83511—Jaws mounted on rollers, cylinders, drums, bands, belts or chains; Flying jaws jaws mounted on rollers, cylinders or drums
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/84—Specific machine types or machines suitable for specific applications
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B25/00—Layered products comprising a layer of natural or synthetic rubber
    • B32B25/10—Layered products comprising a layer of natural or synthetic rubber next to a fibrous or filamentary layer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/02—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer
    • B32B5/022—Non-woven fabric
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
    • B32B7/04—Interconnection of layers
    • B32B7/05—Interconnection of layers the layers not being connected over the whole surface, e.g. discontinuous connection or patterned connection
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
    • B29C48/05—Filamentary, e.g. strands
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General 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
    • B29C66/71—General 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2995/00—Properties of moulding materials, reinforcements, fillers, preformed parts or moulds
    • B29K2995/0037—Other properties
    • B29K2995/0046—Elastic
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/48—Wearing apparel
    • B29L2031/4871—Underwear
    • B29L2031/4878—Diapers, napkins
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2555/00—Personal care
    • B32B2555/02—Diapers or napkins
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B32B37/04—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the partial melting of at least one layer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B32B37/14—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers
    • B32B37/144—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers using layers with different mechanical or chemical conditions or properties, e.g. layers with different thermal shrinkage, layers under tension during bonding

Abstract

本发明提供一种伸缩性复合片的制造方法、伸缩性复合片以及采用该伸缩性复合片的一次性穿用物品。本发明可以实现将处于伸缩状态的弹性部件与片状基材接合时弹性部件不会发生断裂。本发明将主要由热塑性弹性树脂组成的带状或线状弹性部件(3)向弹性部件(3)的长度方向拉伸；然后，将被拉伸的弹性部件(3)层压在第一片状基材(4)上，使第一片状基材(4)的主表面与弹性部件(3)相接触；再将被拉伸的弹性部件(3)与第一片状基材(4)层压，将弹性部件(3)与第一片状基材(4)在第一位置(60)接合；其中，从与第一片状基材(4)的主表面垂直的方向观察时，该第一位置与弹性部件(3)重叠并远离弹性部件(3)的边缘(3p、3q)。

Description

伸缩性复合片的制造方法、伸缩性复合片以及采用该伸缩性 复合片的一次性穿戴物品
技术领域
本发明涉及一种伸缩性复合片的制造方法、伸缩性复合片以及采用该伸缩性复合片的一次性穿戴物品，更具体地涉及一种在释放被拉伸的弹性部件时片状基材发生弯曲并在复合片表面形成凹凸结构的伸缩性复合片的制造方法、及伸缩性复合片、以及采用该伸缩性复合片的一次性穿戴物品。
背景技术
在纸尿裤等一次性穿戴物品中会采用一种由弹性部件与片状基材接合而成的伸缩性复合片。
图10是传统的伸缩性复合片的制造方法的说明图。如图10所示，可以将模具130中熔融或半熔融状态的弹性材料114直接在与辊134相连的网状无纺布112上挤压成形，然后将网状无纺布(图中未示出)层压接合在挤压成形后的弹性材料上制成伸缩性复合片。(例如参照专利文献1)。
专利文献1:日本专利特许2015-529165号公报。
如果将橡胶线等弹性部件在被拉伸时层压接合在无纺布等片状基材上，就可以制造出释放被拉伸的弹性部件时片状基材形成弯曲且表面形成凹凸的伸缩性复合片。
然而，如果采用图10所示的方法，由于是立即将挤压成形的弹性部件与无纺布接合，所以无法制造出表面形成凹凸的伸缩性复合片。
因此，本发明人想到，将挤压成形的弹性部件在被拉伸时层压接合在片状基材上，并对此进行了实验。然而，该构思面临一个前所未有的新问题，即，通过超声波接合将被拉伸的弹性部件接合在片状基材上时，弹性部件会发生断裂。
发明内容
本发明的目的在于提供一种将被拉伸的弹性部件与片状基材接合时弹性部件不会发生断裂的伸缩性复合片材的制造方法、以及伸缩性复合片材、以及采用该伸缩性复合片材的一次性穿戴物品。
本发明的技术方案是：
为了解决上述技术问题，本发明提供一种伸缩性复合片的制造方法，其构成如下。
一种伸缩性复合片的制造方法，该方法步骤包括：
(i)第一步骤：将主要由热塑性弹性树脂构成的带状或线状弹性部件，向所述弹性部件的长度方向拉伸；
(ii)第二步骤：将被拉伸的所述弹性部件层压在第一片状基材上，使第一片状基材的主表面与所述弹性部件相接触；
(iii)第三步骤：将被拉伸的所述弹性部件与所述第一片状基材层压；并将所述弹性部件与所述第一片状基材在第一位置接合；其中，从与所述第一片状基材的主表面垂直的方向上观察时，该第一位置与所述弹性部件重叠并远离所述弹性部件的边缘。
根据上述方法，由于实施接合的第一位置远离弹性部件的边缘，所以能够实现将被拉伸的弹性部件与片状基材接合时弹性部件不会发生断裂。
优选地，所述弹性部件是将所述主要成分为热塑性弹性树脂的弹性树脂材料加热熔融并呈带状挤压成型而成。
在这种情况下，与通过切割片状材料来制造带状弹性部件的情况相比，可以更容易地制造出弹性部件。
优选地，在所述第二步骤中，将所述第二片状基材层压在所述弹性部件和所述第一片状基材上，使所述弹性部件夹在所述第一片状基材与所述第二片状基材之间。在所述第三步骤中，将所述第二片状基材至少与所述弹性部件和所述第一片状基材中的一个相接合。
在这种情况下，可以制造出弹性部件设在第一片状基材与第二片状基材之间的伸缩性复合片。
优选地，在所述第一步骤中，将多个所述弹性部件彼此间隔布置并且分别向长度方向拉伸。在所述第二步骤中，将被拉伸的多个所述弹性部件层压在所述第一片状基材上。
在这种情况下，可以制造出设有多个弹性部件的伸缩性复合片。
优选地，在所述第三步骤中，将所述弹性部件与所述第一片状基材沿所述弹性部件的拉伸方向间隔接合。
在这种情况下，可以制造出弹性部件与第一片状基材间隔接合的伸缩性复合片。
优选地，在所述第三步骤中，将所述第一片状基材与所述第二片状基材在第二位置接合，其中，从与所述第一片状基材的所述主表面垂直的方向上观察时，该第二位置远离所述弹性部件。
在这种情况下，可以制造出第一片状基材与第二片状基材相接合的伸缩性复合片。
优选地，在所述第三步骤中，将所述第一片状基材与所述第二片状基材在第三位置接合；其中，从与所述第一片状基材的所述主表面垂直的方向上观察时，该第三位置与所述弹性部件的所述边缘相邻。
在这种情况下，可以制造出释放弹性部件的拉伸时，弹性部件的位置受到第一和第二片状基材位于第三位置处的接合部分的限制的伸缩性复合片。
优选地，在所述第三步骤中，将所述第一片状基材与所述第二片状基材在多对第三位置处接合；其中，从与所述第一片状基材的所述主表面垂直的方向上观察时，该多对第三位置分别在所述弹性部件边缘的两侧相邻并且彼此相对。
在这种情况下，可以制造出释放被拉伸的弹性部件时，弹性部件的位置受到第一和第二片状基材位于第三位置处接合部分限制的伸缩性复合片。
优选地，在所述第三步骤中，采用超声波接合方式进行接合。
在这种情况下，与采用热封接合方式相比，本发明可以更容易且准确地将所需位置接合在一起。
另外，为了解决上述问题，本发明提供了一种伸缩性复合片，其结构如下：
一种伸缩性复合片，它包括：
(a)片状基材；以及
(b)带状或线状的弹性部件，它主要由热塑性弹性树脂构成；且其与所述片状基材的主表面相接触，并与所述片状基材接合；在向所述弹性部件的长度方向拉伸弹性部件的状态下，从与所述片状基材的主表面垂直的方向上观察时，所述弹性部件和所述片状基材与所述弹性部件的主表面重叠；并且沿着所述弹性部件的拉伸方向间隔接合在远离所述弹性部件边缘的多个位置。
此外，为了解决上述技术问题，本发明还提供一种采用上述伸缩性复合片的一次性穿戴物品，其结构如下：
一次性穿戴物品，它包括：
(a)前腰部；
(b)与所述前腰部之间间隔相对的后腰部；以及
(c)与所述前腰部和所述后腰部相连的裆部；所述前腰部和所述后腰部中的一个或两个包含伸缩性复合片；且所述伸缩性复合片设有向所述一次性穿戴物品的腰围方向上可被拉伸的弹性部件。
在上述结构的一次性穿戴物品中，前腰部和后腰部的腰围方向具有伸缩性。
本发明可以实现在对被拉伸的弹性部件和片状基材进行接合时，其弹性部件不会发生断裂。
附图说明
图1为本发明伸缩性复合片制造装置实施例1的整体结构示意图。
图2(a)为本发明实施例1中排出机构的排出口的主要部位放大图。
图2(b)为本发明实施例1中第一垫片的主要部位放大图。
图2(c)为本发明实施例1中第二垫片的主要部位放大图。
图2(d)为本发明实施例1中排出机构的排出口的主要部位仰视图。
图3(a)为本发明实施例1中层压体的截面图。
图3(b)为本发明实施例1中层压体的透视图。
图4(a)、图4(b)分别为本发明中弹性部件和第一无纺布和第二无纺布接合的主要部位示意图(变形例1、变形例2)。
图5(a)为本发明实施例1中弹性部件被拉伸时的伸缩性复合片的截面图。
图5(b)为本发明实施例1中弹性部件拉伸状态被释放时的伸缩性复合片的截面图。
图6(a)、图6(b)分别为本发明实施例1中伸缩性复合片制作实例的照片。
图7(a)、图7(b)分别为本发明中弹性部件与第一无纺布和第二无纺布接合的主要部位示意图(比较例1、比较例2)。
图8为本发明实施例2一次性穿戴物品的示意图。
图9为本发明实施例3一次性穿戴物品的示意图。
图10为传统伸缩性复合片制造方法实施例1说明图。
具体实施方式
下面结合说明书附图及实施例，对本发明作进一步的说明。
实施例1:参照图1-图7，对本发明伸缩性复合片的制造方法和伸缩性复合片进行说明。
图1是伸缩性复合片制造装置10的整体结构示意图。如图1所示，伸缩性复合片的制造装置10，包括排出机构20、冷却辊30、拉伸机构38、层压机构48以及控制装置(图中未示出)。控制装置控制排出机构20、冷却辊30、拉伸机构38以及层压机构48，协同工作。
排出机构20，将加热熔融后的弹性树脂材料以带状排出，而形成带状的中间体2。弹性树脂材料的主要成分为热塑性弹性树脂，且在高于弹性树脂材料弹性变形的温度范围，将所述的弹性树脂材料加热并熔融。另外，排出机构20，可以将加热熔融的弹性树脂材料以线状排出，而形成线性中间体。
图2(a)是排出机构20的排出口21的主要部位放大图。图2(b)是第一垫片26的主要部位放大图。图2(c)是第二垫片28的主要部位放大图。图2(d)是排出机构20的排出口21的主要部位仰视图。
如图2(a)所示，板状的第一垫片26和第二垫片28通过按压部件23和螺栓(图中未示出)等固定在排出口主体22的下部。排出口主体22和按压部件23中形成有供加热熔融后的弹性树脂材料流通的流路(图中未示出)。
如图2(b)和图2(c)所示,第一垫片26和第二垫片28中形成有沿厚度方向贯通的凹槽26p、28p。凹槽26p、28p与形成在第一和第二垫片26、28下表面26s、28s的开口26x、28x连通。例如,第一垫片26的整个宽度方向(图(b)的左右方向)上形成有多条凹槽26p；第二垫片28的宽度方向(图(c)的左右方向)的两端形成有凹槽28p,而宽度方向的中央并未形成凹槽28p。
第一和第二垫片26、28固定在排出口主体22上；并且第二垫片28中的凹槽28p与第一垫片26中的凹槽26p重合。具体地，固定成按压部件23中的流路(图中未示出)与第一垫片26中的凹槽26p的上部26q连通；第二垫片28中的凹槽28p的上部28q与第一垫片26中的凹槽26p的上部26q连通。
如图2(d)所示,排出口主体22的底面24形成有第一排出口25a和第二排出口25b；其中,第一排出口25a，由彼此相邻的第一垫片26的开口26x和第二垫片28的开口28x组成且宽度较大；第二排出口25b，仅由第一垫片26的开口26x组成。加热熔融后的弹性树脂材料从第一和第二排出口25a、25b中以不同的厚度排出。
如图1所示，冷却辊30设在排出机构20的下方；根据需要在到达冷却辊30之前的第一区间对排出机构20排出的中间体2进行拉伸。即，冷却辊30以比从排出机构20的排出口排出时的弹性树脂材料的供料速度更大的圆周速度旋转，从而对中间体2进行拉伸，直至带状中间体2的厚度达到预定值。
冷却辊30的内部形成有供冷媒流动的流路(图中未示出)，在中间体2与冷却辊30的外周面相接触的第二区间82对中间体2进行冷却固化，直至温度达到构成中间体2的弹性树脂材料发生弹性变形的温度范围。由此，中间体2在第二区间82变为带状弹性部件3；然后，将中间体2从冷却辊30中拉出。
通过导辊32将弹性部件3送入拉伸机构38。拉伸机构38，包括抽拉辊34、夹辊36以及拉伸辊40。弹性部件3夹在抽拉辊34与夹辊36之间，以防止弹性部件沿着抽拉辊34的外周面滑动。抽拉辊34与冷却辊30同步旋转。
在到达拉伸辊40之前的第三区间84，从抽拉辊34与夹辊36之间拉伸弹性部件3。也就是说，拉伸辊40以比抽拉辊34的圆周速度更快的圆周速度旋转，并以预定的倍率来拉伸弹性部件，使得弹性部件3沿着拉伸辊40的外周面被拉伸。
层压机构48，通过导辊50将第一片状基材即连续的第一无纺布4提供给拉伸辊40；并且分别通过导辊52、54将第二片状基材即连续的第二无纺布6提供给拉伸辊40；沿拉伸辊40被拉伸的弹性部件3夹在第一无纺布4与第二无纺布6之间，以形成由弹性部件3和第一无纺布4以及第二无纺布6层压而成的层压体7。
层压体7，随着拉伸辊40的旋转而移动，从拉伸辊40与超声波接合装置42的变幅杆43之间通过；变幅杆43与拉伸辊40呈现接触、分离的动作，即当层压体7被夹在拉伸辊40与变幅杆43之间时，对弹性部件3和第一、第二无纺布4、6进行超声波接合，从而形成弹性部件3与第一、第二无纺布4、6间断性接合的伸缩性复合片8，并将其从层压机构48中拉出。也可以在没有弹性部件3的情况下，直接对第一、第二无纺布4、6的相对的部分进行超声波接合。
具体地，拉伸辊40的外周面上设有彼此间隔形成的多个突起(图中未示出)起到接合时的砧座的作用。即，当层压体7夹在拉伸辊40的突起部与变幅杆43之间中的部分被超声波接合。通过超声波接合，可以将所需位置容易且高精度地接合在一起。
除了超声波接合的方式以外，还可以采用其他方式，例如，可以通过热焊接，例如热封方式等，对层压体7的弹性部件3和第一、第二无纺布4、6进行接合。或者，还可以形成贯穿弹性部件3与第一、第二无纺布4、6之间的孔，通过该孔对无纺布4、6进行接合。
拉伸辊40，由拉伸机构38和层压机构48两者共用，这简化了伸缩复合片材的制造装置10的结构，但也可以采用其中拉伸机构38和层压机构48设置各用各辊的结构。
下面参考图3、图4以及图7对弹性部件3和第一、第二无纺布4、6的接合模式进行说明。
图3(a)是层压体7的截面图。如图3(a)所示，第一无纺布4与第二无纺布6之间设有带状的弹性部件3。带状的弹性部件3具有彼此相对的长条状主表面3a、3b以及宽度比主表面3a、3b窄、且彼此相对的长条状侧面3s、3t。另外，弹性部件3的截面形状并不仅限于矩形，也可以是长圆形、椭圆形和圆形等。
图3(b)是从与第一无纺布4的主表面垂直的方向上观察层压体7时的透视图。如图3(b)所示，从与第一无纺布4的主表面垂直的方向观察时，弹性部件3和第一、第二无纺布4、6与弹性部件3重叠，并且在远离弹性部件3边缘3p、3q的第一位置60和远离弹性部件3的第二位置62间断性地超声波接合，形成接合部60x、62x。
例如，可以将弹性部件3拉伸时的宽度W0设在0.1-3mm左右。优选地，第一位置60的接合部60x的宽度W1小于或等于拉伸时的弹性部件3的宽度W0的1/2，更优选地，小于或等于1/3。优选地，接合部60x的长度L是接合部60x的宽度W1的数倍左右。
图3所示的伸缩性复合片，它包括：(a)无纺布4、6；和(b)带状弹性部件3；其中，该带状弹性部件3，主要由热塑性弹性树脂构成，且其与所述片状基材的主表面相接触，并与无纺布4、6接合在一起。在将弹性部件3的长度方向拉伸弹性部件3的状态下，从与无纺布4、6的主表面垂直的方向上观察时，弹性部件3和无纺布4、6与弹性部件3重叠；并且在远离弹性部件3边缘3p、3q的多个位置60沿着弹性部件3的拉伸方向间隔接合。
与图3(b)相同，图7为比较例1、比较例2中的弹性部件3与第一、第二无纺布4、6之间的接合方式主要部位示意图。如图7(a)所示，本发明人面临迄今尚未有的新问题：即当在与被拉伸的弹性部件3的边缘3p、3q相接触的位置66进行超声波接合时，以及如图7(b)所示，在与被拉伸的弹性部件3的边缘3p、3q重合的位置68进行超声波接合时，弹性部件3可能会发生断裂。
如图3(b)所示，如果在远离弹性部件3边缘3p、3q的第一位置60对弹性部件3与第一、第二无纺布4、6进行超声波接合，可以防止弹性部件3发生断裂。
与图3(b)相同，图4是弹性部件3与第一、第二无纺布4、6的接合方式变形例的主要部位示意图。
如图4(a)所示，也可以在第一位置60对弹性部件3与第一、第二无纺布4、6进行接合，从而在远离弹性部件3的中央位置而形成接合部60a、60b。
如图4(b)所示，也可以在第一位置60接合的同时，在多个第三位置64a、64b对第一无纺布4和第二无纺布6进行接合；其中，从与第一无纺布4的主表面垂直的方向上观察时，该多个第三位置64a、64b分别在弹性部件3边缘3p、3q的两侧相邻且彼此相对。也可以仅在与弹性部件3的边缘3p、3q相邻的多对第三位置64a、64b中的一个位置，即64a或64进行接合。在第一无纺布4与第二无纺布6接合的第三位置64a、64b，与弹性部件3一侧的边缘3p相邻的位置64a和与弹性部件3的另一侧边缘3q相邻的位置64b在弹性部件3的拉伸的方向上彼此移位。
在任何情况下，都能制造出释放被拉伸的弹性部件3时弹性部件3的位置被第三位置64a、64b处的第一和第二片状基材4、6接合部分限制的伸缩性复合片。
图5(a)是弹性部件3被拉伸时的伸缩性复合片8的截面图。图5(b)是释放被拉伸的伸缩性复合片的截面图。如图5(a)所示，当弹性部件3与第一、第二无纺布4、6在第一位置间隔接合且形成接合部60x时，如图5(b)所示，弹性部件3的伸缩状态被释放后，彼此相邻的接合部60x之间的间隔变短，从而在第一、第二无纺布4、6发生弯曲的表面而形成凹凸。
图6是伸缩性复合片的制作实例的照片。图6(a)为自然状态，伸缩性复合片的表面形成有折叠状的凹凸。图6(b)是被拉伸的伸缩性复合片。根据图6(b)可知，多个弹性部件被左右方向上被拉伸，使得无纺布表面上的折叠状凹凸消失，并且在无纺布与弹性部件不重叠的部分中，无纺布以分散的方式彼此接合。
优选地，作为弹性部件3的材料，即热塑性弹性树脂在室温下具有橡胶弹性的热塑性树脂，例如，可以从JIS K 6418:2007(ISO18064:2003)中规定并分类的热塑性弹性体中选择适当的种类。例如，采用硬段玻璃化转变温度范围在80℃-200℃左右；软段玻璃化转变温度在-70℃～-10℃的热塑性弹性体。
具体地，可以选择陶氏化学公司生产的“VERSIFY”(注册商标)等烯烃弹性体、埃克森美孚公司生产的“Vistamaxx”(注册商标)等丙烯弹性体、日本瑞翁株式会社生产的“Quintac”(注册商标)等苯乙烯类弹性体等。
下面参照图3，对实施例1中的伸缩性复合片的制造方法进行说明。首先，将主要由热塑性弹性树脂构成的带状或线状弹性部件3向弹性部件3的长度方向拉伸(第一步骤)。
然后，将被拉伸的弹性部件3层压在第一无纺布4上，使第一无纺布4的主表面与弹性部件3相接触(第二步骤)。在第二步骤中，将第二无纺布6层压在弹性部件3和第一无纺布4上，从而使弹性部件3夹在第一无纺布4与第二无纺布6之间(子步骤1)。
然后，在被拉伸的弹性部件3与第一无纺布4层压的状态下，将弹性部件3与第一无纺布4在第一位置60接合；其中，从与所述第一无纺布4的主表面垂直的方向上观察时，该第一位置与弹性部件3重叠，并远离弹性部件3的边缘3p、3q(第三步骤)。在第三步骤中，将第二无纺布6与弹性部件3和第一无纺布4中的至少一个接合(子步骤2)。
根据上述方法，由于进行接合的第一位置60远离弹性部件3的边缘3p、3q，所以接合时弹性部件3不会发生断裂。
另外，也可以在第一位置60沿着弹性部件3被拉伸的方向进行连续接合，而不是沿着弹性部件3被拉伸的方向间隔接合。
在第三步骤中，也可以在第二位置62对第一、第二无纺布4、6进行接合；其中，从与第一无纺布4的主表面垂直的方向上观察时，该第二位置远离弹性部件3。在这种情况下，可以制造出第一无纺布4与第二无纺布6接合的伸缩性复合片。但是也可以省略在第二位置62处的接合。
伸缩性复合片制造装置10的排出机构20排出多条中间体2，形成多个弹性部件3；然后，在第三区间84间隔设置多个弹性部件3，分别向长度方向拉伸；再用层压机构48将被拉伸的多个弹性部件3层压在第一、第二无纺布4、6上，从而制造出设有多个弹性部件3的伸缩性复合片8。
将加热并熔融后的弹性树脂材料以带状挤压成形，与切割片状材料来制造带状弹性部件时相比，可以更容易地制造出弹性部件。
在制造伸缩性复合片时，除了用伸缩性复合片的制造装置挤压成形出弹性部件外，还可以采用其他方法，例如，将预先加工好的弹性部件卷在辊子上备用，再对备好的弹性部件进行放卷。
变形例1:也可以配置成伸缩性复合片制造装置10的层压机构48，仅提供第一无纺布4和第二无纺布6中的第一无纺布4，再将弹性部件3与第一无纺布4层压接合。在这种情况下，将被拉伸的弹性部件3与第一无纺布4接合时，弹性部件3也同样不会发生断裂。
在变形例1的伸缩性复合片的制造方法中，上述实施例1的伸缩性复合片的制造方法中的第二步骤不包括子步骤1。而且第三步骤不包括子步骤2。
实施例2:参照图8，采用实施例1制造出的伸缩性复合片8的一次性穿戴物品70进行说明。图8是一次性穿戴物品70的示意图。
如图8所示，在一次性穿戴物品70中，前腰部72与后腰部74间隔相对；裆部76与前腰部72和后腰部74相连。划线处所示的吸收性物品78被设置成跨裆部76。使用时在裆部76被折弯，将前腰部72放在腹部一侧，后腰部74放在背部一侧；然后，采用诸如胶带(图中未示出)等紧固部件固定。
如果是所谓的内裤型的一次性穿戴物品，则通过热封方式等提前将前腰部72的一对侧边72s与后腰部74的一对侧边74s分别接合。
实施例1中的伸缩性复合片用于一次性穿戴物品的前腰部72和后腰部74。此时，伸缩性复合片8配置成虚线所示的弹性部件3向双向箭头79所示的一次性穿戴物品70的腰围方向拉伸，从而可以使一次性穿戴物品70的前腰部72和后腰部74的腰围方向具有伸缩性。采用实施例1中的伸缩性复合片8，可以容易地使弹性部件3具有与使用部位期望的特性，例如，所期望的拉伸应力和拉伸率等。
也可以配置成将实施例1中的伸缩性复合片8用于一次性穿戴物品70的前腰部72和后腰部74，或者用于前腰部72和后腰部74以及裆部76，伸缩性复合片8的弹性部件3仅在前腰部72和后腰部74中的一侧向腰围方向拉伸。还可以配置成将实施例1中的伸缩性复合片8仅用于一次性穿戴物品70的前腰部72和后腰部74中的一侧，且伸缩性复合片8的弹性部件3向腰围方向拉伸。
实施例3:参照图9，对将实施例1中的伸缩性复合片8用于一对侧片75的一次性穿戴物品70a进行说明。图9是展开后的一次性穿戴物品70a的示意图。
如图9所示，在一次性穿戴物品70a中，一对侧片75接合在主体部71一侧的端部71b；一对耳部73接合在主体部71另一侧的端部71f；后腰部74a，包括主体部71一侧的端部71b和一对侧片75；前腰部72a，包括主体部71另一侧的端部71f和一对耳部73；吸收性物品78a横跨裆部76a设在主体部71上。
使用时，在裆部76a被折弯；将前腰部72a设置在腹部侧；后腰部74a设置在背部侧；通过设在侧片75前端75a的第一紧固件70s和设在主体部71另一侧端部71f的第二紧固件70t，将前腰部72a和后腰部74a接合，从而将一次性穿戴物品70a穿在使用者身上。也可以用线带等来代替紧固件70s、70t，将侧片75接合在主体部71另一侧的端部71f。此外，还可以配置成前腰部72a，包括一对侧片75；后腰部76a包括一对耳部73。
后腰部74a的侧片75，包括实施例1中的伸缩性复合片8，如虚线所示，伸缩性复合片8的弹性部件3配置成向双向箭头79所示的一次性穿戴物品70a的腰围方向拉伸。
采用实施例1中的伸缩性复合片8，可以很容易地使弹性部件3具有与侧片75相应的所需的特性，例如，所需的拉伸应力和拉伸率等。
如上所述，可以实现将被拉伸的弹性部件与片状基材接合时弹性部件不会发生断裂。
另外，本发明并不限于上述实施方式，可以进行各种变更。
例如，对由弹性部件与无纺布层压接合而成的伸缩性复合片所进行的举例说明，也可以采用除无纺布以外的片状基材来制造伸缩性复合片。而且，弹性部件的截面形状并不仅限于矩形，也可以是长圆形、椭圆形和圆形等。
符号说明
3 弹性部件
3a、3b 主表面
3p、3q 边缘
3s、3t 侧面
4 第一无纺布(第一片状基材)
6 第二无纺布(第二片状基材)
60 第一位置
62 第二位置
64a、64b 第三位置
70,70a 一次性穿戴物品
72、72a 前腰部
74、74a 后腰部
76、76a 档部
79 腰围方向

Claims (11)

1.一种伸缩性复合片的制造方法，其特征在于:该方法步骤包括：
第一步骤：将主要由热塑性弹性树脂构成的带状或线状弹性部件，向所述弹性部件的长度方向拉伸；
第二步骤：将被拉伸的所述弹性部件层压在第一片状基材上，使第一片状基材的主表面与所述弹性部件相接触；
第三步骤：将被拉伸的所述弹性部件与所述第一片状基材层压；并将所述弹性部件与所述第一片状基材在第一位置接合；其中，从与所述第一片状基材的主表面垂直方向上观察时，该第一位置与所述弹性部件重叠并远离所述弹性部件的边缘。
2.根据权利要求1所述的伸缩性复合片的制造方法，其特征在于：所述弹性部件是将主要成分为热塑性弹性树脂的弹性树脂材料加热熔融并呈带状挤压成型而成。
3.根据权利要求1或2所述的伸缩性复合片的制造方法，其特征在于：
在所述第二步骤中，将所述第二片状基材层压在所述弹性部件和所述第一片状基材上，使所述弹性部件夹在所述第一片状基材与所述第二片状基材之间；
在所述第三步骤中，将所述第二片状基材至少与所述弹性部件和所述第一片状基材中的一个相接合。
4.根据权利要求1或2所述的伸缩性复合片的制造方法，其特征在于：
在所述第一步骤中，将多个所述弹性部件彼此间隔布置并且分别向长度方向拉伸；
在所述第二步骤中，将被拉伸的多个所述弹性部件层压在所述第一片状基材上。
5.根据权利要求1或2所述的伸缩性复合片的制造方法，其特征在于：将所述弹性部件与所述第一片状基材沿所述弹性部件的拉伸方向间隔接合。
6.根据权利要求3所述的伸缩性复合片的制造方法，其特征在于：在所述第三步骤中，将所述第一片状基材与所述第二片状基材在第二位置接合：其中，从与所述第一片状基材的所述主表面垂直的方向上观察时，该第二位置远离所述弹性部件。
7.根据权利要求3或6所述的伸缩性复合片的制造方法，其特征在于：在所述第三步骤中，将所述第一片状基材与所述第二片状基材在第三位置接合：其中，从与所述第一片状基材的所述主表面垂直的方向上观察时，该第三位置与所述弹性部件的边缘相邻。
8.根据权利要求3或6所述的伸缩性复合片的制造方法，其特征在于：在所述第三步骤中，将所述第一片状基材与所述第二片状基材在多对第三位置接合；其中，从与所述第一片状基材的所述主表面垂直的方向上观察时，该多对第三位置分别在所述弹性部件边缘的两侧相邻并且彼此相对。
9.根据权利要求1至8的任意一项所述的伸缩性复合片的制造方法，其特征在于：采用超声波接合的方式进行接合。
10.一种伸缩性复合片，其特征在于：它包括：
片状基材；
带状或线状的弹性部件，它主要由热塑性弹性树脂构成；且其与所述片状基材的主表面相接触，并与所述片状基材接合；
其中，在向所述弹性部件的长度方向拉伸弹性部件的状态下，从与所述片状基材的主表面垂直的方向上观察时，所述弹性部件和所述片状基材与所述弹性部件的主表面重叠，并且沿着所述弹性部件的拉伸方向间隔接合在远离所述弹性部件边缘的多个位置。
11.一种一次性穿戴物品，其特征在于：它包括：
前腰部；
与所述前腰部之间间隔相对的后腰部；
与所述前腰部和所述后腰部相连的裆部；
其中，所述前腰部和所述后腰部中的一个或两个包含如权利要求10所述的伸缩性复合片；且在所述伸缩性复合片设有向所述一次性穿用物品的腰围方向上可被拉伸的弹性部件。
CN201880088142.4A 2018-01-31 2018-12-17 伸缩性复合片的制造方法、伸缩性复合片以及采用该伸缩性复合片的一次性穿戴物品 Active CN111867813B (zh)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP2018-014324 2018-01-31
JP2018014324 2018-01-31
PCT/JP2018/046425 WO2019150802A1 (ja) 2018-01-31 2018-12-17 伸縮複合シートの製造方法、伸縮複合シート及び該伸縮複合シートを用いた使い捨て着用物品

Publications (2)

Publication Number Publication Date
CN111867813A true CN111867813A (zh) 2020-10-30
CN111867813B CN111867813B (zh) 2023-03-28

Family

ID=67479653

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201880088142.4A Active CN111867813B (zh) 2018-01-31 2018-12-17 伸缩性复合片的制造方法、伸缩性复合片以及采用该伸缩性复合片的一次性穿戴物品

Country Status (5)

Country Link
US (1) US20200360191A1 (zh)
EP (1) EP3747636A4 (zh)
JP (1) JP7290579B2 (zh)
CN (1) CN111867813B (zh)
WO (1) WO2019150802A1 (zh)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10792194B2 (en) 2014-08-26 2020-10-06 Curt G. Joa, Inc. Apparatus and methods for securing elastic to a carrier web
US11642249B2 (en) 2016-12-20 2023-05-09 The Procter & Gamble Company Methods and apparatuses for making elastomeric laminates with elastic strands provided with a spin finish
EP3675785B1 (en) 2017-09-01 2021-11-10 The Procter & Gamble Company Methods and apparatuses for making elastomeric laminates
US11925537B2 (en) 2017-09-01 2024-03-12 The Procter & Gamble Company Beamed elastomeric laminate structure, fit, and texture
US11147718B2 (en) 2017-09-01 2021-10-19 The Procter & Gamble Company Beamed elastomeric laminate structure, fit, and texture
US11547613B2 (en) 2017-12-05 2023-01-10 The Procter & Gamble Company Stretch laminate with beamed elastics and formed nonwoven layer
EP3746021B1 (en) 2018-01-29 2024-01-31 Curt G. Joa, Inc. Apparatus and method of manufacturing an elastic composite structure for an absorbent sanitary product
US11925538B2 (en) 2019-01-07 2024-03-12 Curt G. Joa, Inc. Apparatus and method of manufacturing an elastic composite structure for an absorbent sanitary product
US11819393B2 (en) 2019-06-19 2023-11-21 The Procter & Gamble Company Absorbent article with function-formed topsheet, and method for manufacturing
US11173072B2 (en) 2019-09-05 2021-11-16 Curt G. Joa, Inc. Curved elastic with entrapment
JP7267498B1 (ja) 2022-07-07 2023-05-01 株式会社瑞光 伸縮積層シートの製造装置及び伸縮積層シートの製造方法

Citations (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20030144643A1 (en) * 2001-12-28 2003-07-31 Christian Jarpenberg Elasticized web and a method and apparatus for its manufacture
CN1756659A (zh) * 2003-03-26 2006-04-05 宝洁公司 弹性无纺层压材料及其制造方法
US20060270302A1 (en) * 2003-09-08 2006-11-30 Kenji Ando Composite extensible member and method of manufacturing the same
CN101039804A (zh) * 2004-10-15 2007-09-19 宝洁公司 用自由形成的印刷弹性构件制造波纹拉伸层压材料的方法
CN101166858A (zh) * 2005-04-25 2008-04-23 花王株式会社 伸缩性片材及其制造方法
JP2008104853A (ja) * 2006-09-29 2008-05-08 Daio Paper Corp 吸収性物品における伸縮部形成方法及びその形成装置
CN101896336A (zh) * 2007-12-10 2010-11-24 花王株式会社 伸缩性复合片材
CN102834081A (zh) * 2010-03-29 2012-12-19 王子妮飘株式会社 一次性尿布
CN104736754A (zh) * 2012-09-10 2015-06-24 屈德加薄膜产品股份有限公司 用于形成弹性条带式层压件的方法
CN105358110A (zh) * 2013-06-28 2016-02-24 花王株式会社 短裤型一次性尿布
US20160058624A1 (en) * 2014-08-26 2016-03-03 Curt G. Joa, Inc. Apparatus and methods for securing elastic to a carrier web
CN107205856A (zh) * 2015-01-30 2017-09-26 大王制纸株式会社 伸缩片的制造方法
CN107205867A (zh) * 2015-01-30 2017-09-26 大王制纸株式会社 吸收性物品的伸缩结构和使用了该吸收性物品的伸缩结构的短裤型一次性尿布
CN107405228A (zh) * 2015-05-08 2017-11-28 株式会社瑞光 短裤型穿着物品及其制造方法

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3883530B2 (ja) * 2003-09-08 2007-02-21 花王株式会社 複合伸縮部材及びその製造方法
DE112008000894T5 (de) * 2007-04-10 2010-02-18 Zuiko Corp., Settu Laminierte dehnbare Schicht und Verfahren zur Herstellung derselben
US9199410B2 (en) * 2011-06-30 2015-12-01 Sca Hygiene Products Ab Method of forming an elastic laminate
EP2808352B1 (en) * 2013-05-29 2017-08-23 Abu Dhabi Polymers Co. Ltd (Borouge) Llc. Bimodal polypropylene for cast films or a metallized film wherein the polypropylene comprises two fractions which differ in the comonomer content
WO2016121986A1 (ja) * 2015-01-30 2016-08-04 大王製紙株式会社 テープタイプ使い捨ておむつ及びその製造方法

Patent Citations (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20030144643A1 (en) * 2001-12-28 2003-07-31 Christian Jarpenberg Elasticized web and a method and apparatus for its manufacture
CN1756659A (zh) * 2003-03-26 2006-04-05 宝洁公司 弹性无纺层压材料及其制造方法
US20060270302A1 (en) * 2003-09-08 2006-11-30 Kenji Ando Composite extensible member and method of manufacturing the same
CN101039804A (zh) * 2004-10-15 2007-09-19 宝洁公司 用自由形成的印刷弹性构件制造波纹拉伸层压材料的方法
CN101166858A (zh) * 2005-04-25 2008-04-23 花王株式会社 伸缩性片材及其制造方法
JP2008104853A (ja) * 2006-09-29 2008-05-08 Daio Paper Corp 吸収性物品における伸縮部形成方法及びその形成装置
CN101896336A (zh) * 2007-12-10 2010-11-24 花王株式会社 伸缩性复合片材
CN102834081A (zh) * 2010-03-29 2012-12-19 王子妮飘株式会社 一次性尿布
CN104736754A (zh) * 2012-09-10 2015-06-24 屈德加薄膜产品股份有限公司 用于形成弹性条带式层压件的方法
CN105358110A (zh) * 2013-06-28 2016-02-24 花王株式会社 短裤型一次性尿布
US20160058624A1 (en) * 2014-08-26 2016-03-03 Curt G. Joa, Inc. Apparatus and methods for securing elastic to a carrier web
CN107205856A (zh) * 2015-01-30 2017-09-26 大王制纸株式会社 伸缩片的制造方法
CN107205867A (zh) * 2015-01-30 2017-09-26 大王制纸株式会社 吸收性物品的伸缩结构和使用了该吸收性物品的伸缩结构的短裤型一次性尿布
CN107405228A (zh) * 2015-05-08 2017-11-28 株式会社瑞光 短裤型穿着物品及其制造方法

Also Published As

Publication number Publication date
US20200360191A1 (en) 2020-11-19
EP3747636A1 (en) 2020-12-09
EP3747636A4 (en) 2021-12-01
JP7290579B2 (ja) 2023-06-13
CN111867813B (zh) 2023-03-28
WO2019150802A1 (ja) 2019-08-08
JPWO2019150802A1 (ja) 2021-01-28

Similar Documents

Publication Publication Date Title
CN111867813B (zh) 伸缩性复合片的制造方法、伸缩性复合片以及采用该伸缩性复合片的一次性穿戴物品
JP5292586B2 (ja) 使い捨て着用物品の製造方法
JP5520117B2 (ja) 弾性不織布およびその製造方法
CN111886127B (zh) 伸缩片材、使用该伸缩片材的一次性穿戴物品及其制造方法
EP1691638B1 (en) Composite fastener products
JP2020054744A (ja) 伸縮性シートの製造方法、伸縮性シートの製造装置、及び、伸縮性シート
CN111867807B (zh) 弹性片的制造方法和制造装置、伸缩性复合片的制造方法和制造装置、以及伸缩性复合片
WO2020213299A1 (ja) 着用物品の製造方法、着用物品、および着用物品の製造装置
WO2019150801A1 (ja) 伸縮複合シートの製造方法及び製造装置
JP7203118B2 (ja) 積層体の製造方法および製造装置
JP7337834B2 (ja) 熱可塑性フィルムの生成方法および生成装置
WO2024009992A1 (ja) 伸縮積層シートの製造装置、伸縮積層シートの製造方法、及び伸縮積層シートを用いた着用物品
WO2023127472A1 (ja) 積層体
JP2015008951A (ja) パンツ型使い捨ておむつ
JP2016026284A (ja) 複合管、及び複合管の製造方法

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant