SE512639C2 - Sätt att framställa ett materiallaminat för användning i ett absorberande alster - Google Patents

Sätt att framställa ett materiallaminat för användning i ett absorberande alster

Info

Publication number
SE512639C2
SE512639C2 SE9604480A SE9604480A SE512639C2 SE 512639 C2 SE512639 C2 SE 512639C2 SE 9604480 A SE9604480 A SE 9604480A SE 9604480 A SE9604480 A SE 9604480A SE 512639 C2 SE512639 C2 SE 512639C2
Authority
SE
Sweden
Prior art keywords
web
bonding
speed
absorbent article
laminate
Prior art date
Application number
SE9604480A
Other languages
English (en)
Other versions
SE9604480D0 (sv
SE9604480L (sv
Inventor
Ulrika Hagrud
Per Ljunggren
Urban Nilsson
Original Assignee
Sca Hygiene Prod Ab
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 Sca Hygiene Prod Ab filed Critical Sca Hygiene Prod Ab
Priority to SE9604480A priority Critical patent/SE512639C2/sv
Publication of SE9604480D0 publication Critical patent/SE9604480D0/sv
Priority to AU54205/98A priority patent/AU5420598A/en
Priority to PCT/SE1997/001954 priority patent/WO1998024389A1/en
Priority to PE1997001061A priority patent/PE26299A1/es
Priority to ZA9710699A priority patent/ZA9710699B/xx
Priority to TNTNSN97199A priority patent/TNSN97199A1/fr
Priority to TW086118254A priority patent/TW398972B/zh
Priority to CO97071435A priority patent/CO4890835A1/es
Publication of SE9604480L publication Critical patent/SE9604480L/sv
Publication of SE512639C2 publication Critical patent/SE512639C2/sv

Links

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
    • A61F13/45—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the shape
    • A61F13/47—Sanitary towels, incontinence pads or napkins
    • A61F13/475—Sanitary towels, incontinence pads or napkins characterised by edge leakage prevention means
    • A61F13/4751—Sanitary towels, incontinence pads or napkins characterised by edge leakage prevention means the means preventing fluid flow in a transversal direction
    • A61F13/4756—Sanitary towels, incontinence pads or napkins characterised by edge leakage prevention means the means preventing fluid flow in a transversal direction the means consisting of grooves, e.g. channels, depressions or embossments, resulting in a heterogeneous surface level
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/45—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the shape
    • A61F13/47—Sanitary towels, incontinence pads or napkins
    • A61F13/475—Sanitary towels, incontinence pads or napkins characterised by edge leakage prevention means
    • A61F13/4751—Sanitary towels, incontinence pads or napkins characterised by edge leakage prevention means the means preventing fluid flow in a transversal direction
    • A61F13/4755—Sanitary towels, incontinence pads or napkins characterised by edge leakage prevention means the means preventing fluid flow in a transversal direction the means being a flat barrier on or inside the absorbent article, e.g. backsheet wrapped around the edges
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/45—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the shape
    • A61F13/49—Absorbent articles specially adapted to be worn around the waist, e.g. diapers
    • A61F13/494—Absorbent articles specially adapted to be worn around the waist, e.g. diapers characterised by edge leakage prevention means
    • A61F13/49406—Absorbent articles specially adapted to be worn around the waist, e.g. diapers characterised by edge leakage prevention means the edge leakage prevention means being at the crotch region
    • 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
    • B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/11—Joint 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
    • B29C66/112—Single lapped joints
    • B29C66/1122—Single lap to lap joints, i.e. overlap joints
    • 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
    • B29C66/05—Particular design of joint configurations
    • B29C66/20—Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines
    • B29C66/23—Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines said joint lines being multiple and parallel or being in the form of tessellations
    • B29C66/232—Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines said joint lines being multiple and parallel or being in the form of tessellations said joint lines being multiple and parallel, i.e. the joint being formed by several parallel joint lines
    • 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
    • B29C66/40—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
    • B29C66/436—Joining sheets for making articles comprising cushioning or padding materials, the weld being performed through the cushioning material, e.g. car seats
    • 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
    • B29C66/438—Joining sheets for making hollow-walled, channelled structures or multi-tubular 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
    • B29C66/70—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
    • B29C66/723—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 being multi-layered
    • B29C66/7234—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 being multi-layered comprising a barrier layer
    • B29C66/72343—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 being multi-layered comprising a barrier layer for liquids
    • 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
    • B29C66/81411—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 characterised by its cross-section, e.g. transversal or longitudinal, being non-flat
    • B29C66/81415—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 characterised by its cross-section, e.g. transversal or longitudinal, being non-flat being bevelled
    • B29C66/81419—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 characterised by its cross-section, e.g. transversal or longitudinal, being non-flat being bevelled and flat
    • 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
    • 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
    • A61F13/494—Absorbent articles specially adapted to be worn around the waist, e.g. diapers characterised by edge leakage prevention means
    • A61F13/49473—Absorbent articles specially adapted to be worn around the waist, e.g. diapers characterised by edge leakage prevention means the edge leakage prevention means having a continuous closed form, e.g. circle, ellipse, rectangle
    • 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
    • B29C66/45—Joining of substantially the whole surface of the 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
    • B29C66/70—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
    • B29C66/72941—Non woven mats, e.g. felt coated
    • 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
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Epidemiology (AREA)
  • Vascular Medicine (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Fluid Mechanics (AREA)
  • Physics & Mathematics (AREA)
  • Absorbent Articles And Supports Therefor (AREA)
  • Orthopedics, Nursing, And Contraception (AREA)
  • Laminated Bodies (AREA)

Description

15 20 25 30 35 512 639 2 9402337-1. Gemensamt för dessa är att de är behäftade med nackdelar exempelvis genom att ha en så komplicerad konstruktion att de är svåra och dyra att tillverka. Andra nackdelar förknippade med tidigare kända läckagebarriärer, är att de ofta bildar hårda, skavande kanter och därför orsakar obehag för en användare av ett alster försett med en sådan läckagebarriär. Vidare uppnås med ett flertal av de tidigare kända läckagebarriärerna inte ett tillräckligt gott läckageskydd.
Det kvarstår således ett stort behov av ett absorberande alster med förbättrat sidokantläckageskydd.
BESKRIVNING AV UPPFINNINGEN: Vid ett sätt att tillverka ett absorberande alster av det i inledningen omtalade slaget, är det emellertid i enlighet med uppfinningen möjligt att åstadkonuna ett materiallaminat som erbjuder en avsevärt förhöjd läckagesäkerhet då det används på ett absorberande alster.
Sättet enligt uppfinningen, varvid en första materialbana och en andra materialbana binds samman i ett intermittent bindningsmönster utmärks därvid främst av att den första materialbanan bringas att passera över en bindningsvals försedd med bindningsytor i form av ett antal ringformigt från valsens yta utskjutande flänsar, eller rader av utskott med mellanliggande utrymmen i form av ringformiga rillor eller nedsänkta spår varvid den första materialbanan bringas att formas efter bindningsvalsens yta medelst styrfingrar vilka pressar in den första materialbanan i de mellanliggande utrymmena mellan bindningsytorna, samt att den andra materialbanan förs samman med den första materialbanan, varefter de bådarnaterialbanorna sammanbinds vid bindningsytorna.
J! 10 15 20 25 30 35 512 639 3 Materialvecken kan formas så att de är regelbundet eller oregelbundet arrangerade över materialytan, samt variera till form och storlek.
Ytterligare utföringsformer och modifikationer framgår av de efterföljande patentkraven.
KORT BESKRIVNING AV RITNINGARNA: Uppfinningen skall i det följande beskrivas närmare under hänvisning till på de bifogade ritningarna visade utföringsexempel.
Därvid visar: figur 1 en svetsvals med styrfingrar för formande av' ett materialskikt efter svetsvalsens Yta; figur 2 ett längdsnitt genom en del av svetsvalsen i figur 4 tillsammans med två materialskikt; figur 3 en schematisk illustration av en tillverkningsprocess enligt uppfinningen; figur 4 en uppförstorad del av den i figur 6 visade tillverkningsprocessen; figur 5 ett materiallaminat av vilket kæmixuriärer enligt uppfinningen kan bildas och figur 6 ytterligare ett materiallaminat för bildande av kantbarriärer.
IHHIH! YIHIIHIIIIHI|||I|\IIIHIIIHIIIH\HHI\IIIII\_I1\IIIIHNHIIIHIIIHIHIHIMHIHNIIIIIIHH!IIIIIIII\l|\l\\l\|\||l|\|\IlllIl||\|\\ nnllnllx uvllu umum-nxxnx ||\|ll|uu|||l|l\||||n|n x || m muIm-nnnnnfl ,_, F w i _ im ,. U m» h: .- H _- p» ..» ,| »1 »_31 . yylmyyl, \ mfwzlvii» “win Hn|||h|nu|1|| nu nnm-uïnw mn-m um u u ümnuunuu mnmnun | .M m... | wmun-“nfiiiw iwiínuui w ii miiiilíiiwWïrfkiii' i ' 10 15 20 25 30 35 512 639 4 BESKRIVNING AV UTFÖRINGSEXEMPEL: I figurerna 1-4 illustreras ett sätt att åstadkomma ett materiallaminat 60 vilket kan användas för framställning av läckagehindrande barriärer till absorberande alster. Vid tillverkningen bildas ett laminat 60 av en första materialbana 61 och en andra materialbana 62 genom att de båda materialbanorna 61,62 matas in mellan en svetsvals 67 och ett ultraljudshorn 68 och binds samman. Såsom visas i figur 1 har svetsvalsen 67 ett flertal cirkulära flänsar 69, vilka tjänar som mothåll till ultraljudshornet 68 vid bindningsprocessen. I utrymmena 70 mellan flänsarna 69 är styrfingrar 71 anordnade. Den första materialbanan matas mot svetsvalsen 67, mellan denna och styrfingrarna 71, så att styrfingrarna 71 trycker ned materialbanan 61 i utrymmena 70 mellan flänsarna 69. Därigenom veckas materialbanan 61 i längdriktningen såsom visas i genomskärning i figur 2. Efter veckningen av den första materialbanan 61 förs denna samman med den andra materialbanan 62 och de båda materialbanorna 61,62 binds samman genom ultraljudsbindning mellan flänsarna 69 och ultraljudshornet 68.
I figur 3 visas hela tillverkningsprocessen schematiskt, medan figur 4 visar en förstoring av sammanbindningssteget i tillverkningsprocessen. De cirkulära flänsarna 69 är i figur 4 visade som en mångfald piggar 72, eller utskott, vilket innebär att sammanbindningen av de båda materialbanorna 61,62 sker intermittent. Genom att mata den första materialbanan 61 med en hastighet som är något högre än hastigheten hos den andra materialbanan 62, närmare bestämt med en hastighet som är 101%-200% av den andra materialbanans 62 hastighet, erhålls en veckning av den första materialbanan 61 även i tvärriktningen, såsom framgår i figur 4. 10 15 20 25 30 35 512 639 5 I figur 5 och 6 visas stycken av materiallaminat 80,90 framställda enligt det i det föregående beskrivna sättet.
Den i figur 5 visade materialbanan 80 består av ett första materialskikt 81, samt ett andra materialskikt 82. De båda materialskikten 81,82 är inbördes förbundna genom svetsar anordnade i nmterialbanans löpriktning. Svetsarna utgör punktformiga bindningar 84 anordnade i dubbla rader 85 alternerande med mellanliggande längsgående obundna partier 86 vilka bildar upphöjda materialveck på laminatets 80 yta. Även det i figur 6 visade materiallaminatet 90, uppvisar en rynkad yta och kan användas för åstadkommande av en vätskeflödesbarriär på ett absorberande alster. Laminatet är framställt utan användning av de i samband med tillverkningsprocessen beskrivna styrfingrarna. Graden av rynkighet avgörs därvid av den relativa hastigheten med vilken den första materialbanan 91 matas fram i förhållande till den andra materialbanan 92, samt av bindningstätheten och bindningsmönstret.
Ett annat sätt att tillverka ett materiallaminat exempelvis av det slag som visas i figur 6, är genom att sträcka ut det andra materialskiktet 82 i materialbanans löpriktning.
Det är därvid väsentligt att det andra materialskiktet 82 uppvisar viss elasticitet, så att det har förmåga att helt eller delvis återgår till sin ursprungliga längd, då utsträckningen upphör. De båda materialskikten 81,82 sammanbinds medan det andra materialskiktet 82 hålls utsträckt, varefter utsträckningen upphör och det andra materialskiktet 82 tillåts dra samman sig. Därvid bildar de obundna partierna 86 luftfyllda, tvärgående materialveck, eller kanaler mellan svetsraderna 85 i materialbanan 80, genom att det första materialskiktet 81 veckas då den hopsvetsade materialbanan dras samman. .i wflhih | i MWÉQÄ u h infiinin|||||| Nunn-m. “Hmm .N ïfÉ .t g š H|N|HUIH HIH \|\|||| HIHHHIII l|\||\|\|\||\\\\||IIIHIIIMHIHH\|\|\|\||\ HHIIVIHHMII|||\||I\||\|||\|||\ln|||'|n|| NIIIIIHIHIIIHM||:H!||lm Mum uu- \|||\|H\;n|||u wmnmwnwwwnmnwwinw | wu um | uumwn|||wuuiinnmwxwwwwuhiwnwnfliuiinun||inuxil|ini|uuiunlhniiuuimumiiåiiiiiiiixunnmfimiånu»»niiiílm 10 15 20 25 30 35 512 639 6 Ett alternativt sätt att åstadkomma den i figur 6 visade materiallaminatet 80, är genom att binda samma två materialskikt 81,82 som valts så att det ena skiktet 82 krymper' mer än det andra skiktet 81 då skikten 81,82 utsätts för krympbehandling, exempelvis genom värmning.
Materialskikten 81,82 binds samman utefter ett antal åtskilda bindningslinjer, krympbehandlas, så att det andra materialskiktet 82 drar samman sig under det att det första materialskiktet 81 varefter materialbanan veckas.
Det är naturligtvis möjligt att binda samman de båda materialskikten på annat vis än genom användning av ultraljud. Således är det exempelvis möjligt att svetsa med värme, eller att limma samman skikten.
Uppfinningen skall inte anses vara begränsad av de här beskrivna utföringsexemplen. Således omfattar uppfinningen alla typer av alster avsedda för absorption av kroppsvätskor och där ett förbättrat kantläckageskydd önskas.
Vidare är det möjligt att inom ramen för patentkraven tänka sig varianter och kombinationer av de beskrivna utföringsexemplen.
I de beskrivna utföringsexemplen, har alstrens vätskegenomsläppliga yta, respektive deras vätskeogenomträngliga yta beskrivits som särskilda materialskikt. Ett sådant arrangemang är emellertid inte nödvändigt. Det är således tänkbart att ett, eller båda höljesskikten integrerad del av alstrets absorptionskropp. Exempelvis kan en absorptionskropp av skummaterial vara bildad med en skinnliknande, vätsketät yta, som kan tjäna som vätskeogenomträngligt höljesskikt. utgör en På motsvarande vis kan en absorptionskropp av skummaterial, 512 639 7 eller absorberande nonwovenmaterial ha en vätskegenomsläpplig yta med lämpliga egenskaper för att kunna ersätta ett särskilt vätskegenomsläppligt höljesskikt.

Claims (3)

10 15 20 25 30 512 639 107034ARe 2000-01-21 PATENTKRAV
1. Sätt att framställa ett materiallaminat för användning i ett absorberande alster enligt krav 1, varvid en första materialbana (61) och en andra materialbana (62) binds samman i ett intermittent bindningsmönster, k ä n n e t e c k n a t av att den första materialbanan (61) bringas att passera över en bindningsvals (67) försedd med bindningsytor (69) i form av ett antal ringformigt från valsens yta utskjutande flänsar, eller rader av utskott med mellanliggande utrymmen (70) i form av ringformiga rillor eller nedsänkta spår varvid den första materialbanan (61) bringas att formas efter bindningsvalsens (67) yta medelst styrfingrar (71) vilka pressar in den första materialbanan (61) i de mellanliggande utrymmena (70) mellan bindningsytorna (69), samt att den andra materialbanan (62) förs samman med den första materialbanan (61), varefter de (6l,62) sammanbinds vid båda materialbanorna bindningsytorna (69).
2. Sätt enligt krav 1, k ä n n e t e c k n a t av att sammanbindningen sker med ultraljud.
3. Sätt enligt krav 1 eller 2, k ä n n e t e c k n a t av att den första materialbanan (61) matas fram med en första hastighet och den andra materialbanan (62) matas fram med en andra hastighet varvid den första hastigheten är 101%- 200% av den andra hastigheten. Ål
SE9604480A 1996-12-05 1996-12-05 Sätt att framställa ett materiallaminat för användning i ett absorberande alster SE512639C2 (sv)

Priority Applications (8)

Application Number Priority Date Filing Date Title
SE9604480A SE512639C2 (sv) 1996-12-05 1996-12-05 Sätt att framställa ett materiallaminat för användning i ett absorberande alster
AU54205/98A AU5420598A (en) 1996-12-05 1997-11-21 Absorbent article with improved leakage security
PCT/SE1997/001954 WO1998024389A1 (en) 1996-12-05 1997-11-21 Absorbent article with improved leakage security
PE1997001061A PE26299A1 (es) 1996-12-05 1997-11-24 Articulo absorbente con una mejor seguridad contra la filtracion
ZA9710699A ZA9710699B (en) 1996-12-05 1997-11-27 Absorbent article with improved leakage security.
TNTNSN97199A TNSN97199A1 (fr) 1996-12-05 1997-12-03 Un article absorbant avec une securite anti fuite amelioree.
TW086118254A TW398972B (en) 1996-12-05 1997-12-04 Absorbent article intended for absorption of body fluid, and method of manufacturing a material laminate for use in said article
CO97071435A CO4890835A1 (es) 1996-12-05 1997-12-05 Articulo absorbente con una seguridad contra derrames mejo- rada

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JP3490291B2 (ja) * 1998-05-18 2004-01-26 ユニ・チャーム株式会社 吸収性物品
US6503233B1 (en) 1998-10-02 2003-01-07 Kimberly-Clark Worldwide, Inc. Absorbent article having good body fit under dynamic conditions
US6673982B1 (en) 1998-10-02 2004-01-06 Kimberly-Clark Worldwide, Inc. Absorbent article with center fill performance
SE518434C2 (sv) * 1999-10-15 2002-10-08 Mariana Dehlin Refillblöja med luftfyllt ytterkantparti och reglerbara band
JP3609361B2 (ja) 2000-10-12 2005-01-12 花王株式会社 立体シート材料
EP1283028B1 (en) * 2001-08-10 2008-03-05 Kao Corporation Topsheet for absorbent article
US6547903B1 (en) 2001-12-18 2003-04-15 Kimberly-Clark Worldwide, Inc. Rotary ultrasonic bonder or processor capable of high speed intermittent processing
US6676003B2 (en) 2001-12-18 2004-01-13 Kimberly-Clark Worldwide, Inc. Rigid isolation of rotary ultrasonic horn
US6537403B1 (en) 2001-12-18 2003-03-25 Kimberly-Clark Worldwide, Inc. Nip adjustment for a rigid ultrasonic bonder or processor
US6613171B2 (en) 2001-12-18 2003-09-02 Kimberly-Clark Worldwide, Inc. Rotary ultrasonic bonder or processor capable of fixed gap operation
US6620270B2 (en) 2001-12-18 2003-09-16 Kimberly-Clark Worldwide, Inc. Control of processing force and process gap in rigid rotary ultrasonic systems
JP3611838B2 (ja) 2001-12-28 2005-01-19 花王株式会社 吸収性物品用の表面シート
EP2222264A4 (en) * 2007-12-21 2012-10-31 Sca Hygiene Prod Ab VACUUM ARTICLE WITH VENTED TOP
RU2445056C1 (ru) * 2007-12-21 2012-03-20 Ска Хайджин Продактс Аб Абсорбирующее изделие с вентилируемым верхним слоем
EP2870951B1 (en) * 2012-07-04 2019-01-30 Zuiko Corporation Ultrasonic bonding method for absorbent article, ultrasonic bonding device for absorbent article, and absorbent article
CN114504437A (zh) * 2020-11-16 2022-05-17 叶正瑜 一种防止侧漏的卫生巾

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US4397645A (en) * 1981-02-24 1983-08-09 The Procter & Gamble Company Disposable absorbent article having an improved liquid containment construction
JP3579905B2 (ja) * 1992-12-11 2004-10-20 株式会社日本吸収体技術研究所 オムツ

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TW398972B (en) 2000-07-21
AU5420598A (en) 1998-06-29
SE9604480D0 (sv) 1996-12-05
WO1998024389A1 (en) 1998-06-11
SE9604480L (sv) 1998-06-06
CO4890835A1 (es) 2000-02-28
TNSN97199A1 (fr) 1999-12-31
PE26299A1 (es) 1999-03-22

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