CA2093141A1 - Machine and devices incorporated therein for the manufacture of a laminated textile fabric composite material containing a superabsorbent polymer - Google Patents

Machine and devices incorporated therein for the manufacture of a laminated textile fabric composite material containing a superabsorbent polymer

Info

Publication number
CA2093141A1
CA2093141A1 CA002093141A CA2093141A CA2093141A1 CA 2093141 A1 CA2093141 A1 CA 2093141A1 CA 002093141 A CA002093141 A CA 002093141A CA 2093141 A CA2093141 A CA 2093141A CA 2093141 A1 CA2093141 A1 CA 2093141A1
Authority
CA
Canada
Prior art keywords
roller
pattern
composite sheet
sheet
fabric
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.)
Abandoned
Application number
CA002093141A
Other languages
French (fr)
Inventor
George Barrett
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.)
PACKAGING CONCEPTS AND TECHNOLOGIES INTERNATIONAL Inc
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of CA2093141A1 publication Critical patent/CA2093141A1/en
Abandoned legal-status Critical Current

Links

Classifications

    • 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
    • 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
    • A61F13/15617—Making absorbent pads from fibres or pulverulent material with or without treatment of the fibres
    • A61F13/15658—Forming continuous, e.g. composite, fibrous webs, e.g. involving the application of pulverulent material on parts thereof
    • 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
    • B29C65/18—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated tools
    • 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
    • B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/13—Single 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
    • B29C66/133—Fin-type joints, the parts to be joined being flexible
    • 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
    • B29C66/45—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
    • B29C66/80—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
    • B29C66/81427—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 comprising a single ridge, e.g. for making a weakening line; comprising a single tooth
    • 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
    • B29C66/81431—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 comprising a single cavity, e.g. a groove
    • 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
    • B29C66/83413—Roller, cylinder or drum types cooperating 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
    • B29C66/83—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
    • B29C66/849—Packaging machines
    • 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
    • B29C66/90—Measuring or controlling the joining process
    • B29C66/91—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux
    • B29C66/912—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by measuring the temperature, the heat or the thermal flux
    • B29C66/9121—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by measuring the temperature, the heat or the thermal flux by measuring the temperature
    • B29C66/91211—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by measuring the temperature, the heat or the thermal flux by measuring the temperature with special temperature measurement means or methods
    • B29C66/91216—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by measuring the temperature, the heat or the thermal flux by measuring the temperature with special temperature measurement means or methods enabling contactless temperature measurements, e.g. using a pyrometer
    • 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
    • B29C66/90—Measuring or controlling the joining process
    • B29C66/91—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux
    • B29C66/912—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by measuring the temperature, the heat or the thermal flux
    • B29C66/9121—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by measuring the temperature, the heat or the thermal flux by measuring the temperature
    • B29C66/91231—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by measuring the temperature, the heat or the thermal flux by measuring the temperature of the joining tool
    • 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
    • B29C66/90—Measuring or controlling the joining process
    • B29C66/91—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux
    • B29C66/914—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux
    • B29C66/9141—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux by controlling or regulating the temperature
    • B29C66/91421—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux by controlling or regulating the temperature of the joining tools
    • 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
    • B29C66/90—Measuring or controlling the joining process
    • B29C66/91—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux
    • B29C66/914—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux
    • B29C66/9141—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux by controlling or regulating the temperature
    • B29C66/91431—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux by controlling or regulating the temperature the temperature being kept constant over time
    • 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
    • B29C66/90—Measuring or controlling the joining process
    • B29C66/91—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux
    • B29C66/914—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux
    • B29C66/9161—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux by controlling or regulating the heat or the thermal flux, i.e. the heat flux
    • B29C66/91641—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux by controlling or regulating the heat or the thermal flux, i.e. the heat flux the heat or the thermal flux being non-constant over time
    • 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
    • B32B37/06—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the heating method
    • B32B37/065—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the heating method resulting in the laminate being partially bonded
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B9/00—Enclosing successive articles, or quantities of material, e.g. liquids or semiliquids, in flat, folded, or tubular webs of flexible sheet material; Subdividing filled flexible tubes to form packages
    • B65B9/02—Enclosing successive articles, or quantities of material between opposed webs
    • B65B9/023—Packaging fluent 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
    • 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
    • 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
    • B29C66/90—Measuring or controlling the joining process
    • B29C66/93—Measuring or controlling the joining process by measuring or controlling the speed
    • B29C66/934—Measuring or controlling the joining process by measuring or controlling the speed by controlling or regulating the speed
    • B29C66/93451—Measuring or controlling the joining process by measuring or controlling the speed by controlling or regulating the speed by controlling or regulating the rotational speed, i.e. the speed of revolution
    • 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
    • B29C66/90—Measuring or controlling the joining process
    • B29C66/96—Measuring or controlling the joining process characterised by the method for implementing the controlling of the joining process
    • B29C66/961—Measuring or controlling the joining process characterised by the method for implementing the controlling of the joining process involving a feedback loop mechanism, e.g. comparison with a desired value
    • 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
    • B29K2105/00—Condition, form or state of moulded material or of the material to be shaped
    • B29K2105/06—Condition, form or state of moulded material or of the material to be shaped containing reinforcements, fillers or inserts
    • B29K2105/08—Condition, form or state of moulded material or of the material to be shaped containing reinforcements, fillers or inserts of continuous length, e.g. cords, rovings, mats, fabrics, strands or yarns
    • B29K2105/0854—Condition, form or state of moulded material or of the material to be shaped containing reinforcements, fillers or inserts of continuous length, e.g. cords, rovings, mats, fabrics, strands or yarns in the form of a non-woven mat

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Epidemiology (AREA)
  • Biomedical Technology (AREA)
  • Manufacturing & Machinery (AREA)
  • Vascular Medicine (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Treatment Of Fiber Materials (AREA)
  • Laminated Bodies (AREA)

Abstract

A method and apparatus for manufacturing a continuous quilt-like sheet (25) containing superabsorbent material (12) in discrete cells formed between two sheets (2a, 3a) of fluid permeable fabric.
The cells are formed by fusion of the two fabric sheets at selected locations in a continuous pattern through application of pressure and heat, completely enclosing individual localized deposits of material placed between the fabric sheets.

Description

WO 93tO~861 2 0 9 3 1 4 1 PCI`/US92/06486 ~ACXGROUND OF THE INVENTION -'' .
The present invention is generally in the field of forming a continuous sheet of laminate material containing superabsorbent polymer and relates specifically to lamination of large continuous sheets of fabric to form enclosed cells, each containing a measured quantity of superabsorbent polymer material. Such composite sheets have many uses and are important items of commerce. The superàbsorbent material readily absorbs water and can then be frozen to provide a substitute for ice and dry ice.
The invention comprises a method and machine for rapidly and reliably producing a continuous composite sheet and forming it into uniform rolls. "Composite" as used here means a sheet comprising two layers of laminated textile material between which discrete quantities of a superabsorbent polymer are arrayed in a regular pattern. Thos~e quantities of polymer are kept separate by the fusing or otherwise sealing together of the two layers of te~tile material. Each quantity of polymer is completely surrounded by a seal which prevents the escape of the polymer. One such quantity of polymer surrounded by a seal is referred to here as a "ceL1". The textile material allows passage of fluids, such as wa~er, there~through but contains ~ the water after ahsorption into the polymer within the cells.
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, W093/0~861 2 Q 9 3 ~ 4 1 PCT/US92/0~
- It is a requirement of composites of this type that the seals around the individual cells containing polymer be secure. The polymer is typically a powder-like material which must be contained within the cells. These seals may be subject to stress in the intended use of the product, but it is important that their contents should not be released. The cells are usually relatively small, square, and of uniform size.
The laminated seals may be cut generally down their centerlines to separate out a smaller sheet. It is desired that the seals retain sufficient strength ~ven when split to prevent the escape of cell contents during the use for which the product is intended. It is also desired that the seals withstand the application of perforations down seal centerlines for tearing, or separating along said perforations while retaining sufficient integrity to prevent the escape of cell contents under end use conditions.
~ The textile material used keeps cell contents from passing - through said fabric in its original powered state or in expected subsequent conditions or states.
It is known to laminate fabrics to form a bond and seal.
Such lamination has been previously done using heat to fuse or bond fabrics. The present invention uses lamination to make it possible to form large continuous sheets of composite material having discret~ cells containing powder or granular material.
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W093/02861 2 0 9 3 ~ 4 1 PCT/US92/0~86 It is an object of the present invention ~o provide a method and apparatus for economically producing large quantities of laminate material having discrete cells of powder or granules. It is another object of the invention to provide a continuous composite sheet that may be readily separated into s~leets of desired size. Other objects of the invention will become apparent from the detailed description to the preferred embodiment.

SUMMARY OF THE INVENTION

The present invention includes a method and apparatus for manufacturing a continuous quilt-like roll of material comprising an upper and lower sheet of fabric material bonded together along continuous intersecting lines to form discrete pockets or cells between said sheets. The individual cells contain and hold a superabsorbent polymer or other similar material which is retained in individual cells by a fabric through which the material cannot pass either dry or after having absorbed a fluid. The length and width of each cell is determined by the spacing of the longitudinally and transversely extending seal or bond lines. The seals or bonds are formed by the application of heat and pressure from paired rollers, at least one of which has a raised pattern to transfer a desired pattern of cells to the two sheets of fabric passed there-between. The fabric allows forminq such bonds by , .

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2 ~ 9 3 1~1 PCT/US92/064~6 thermoplastic fusing or may involve a suitable adhesive.
Arrangement of the rollers allows increasing and controlling the heat/pressure phase for producing the bond lines. A
delayed pressure roller helps cool and consolidate the bond. A
vibrator pla~e levels the powder-like material in the cells to minimize distortion when forming the finished product into rolls.

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Fig. l is a schematic side view of the present invention.

Fig. 2 is a perspective view of the present invention with sideframe partially broken away.

Fig. 3 is a detailed view of the apportioning roller.
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~; Fig. 4 is a detailed view of t~le pattern roller.
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:, Fig. 5 is a perspective view of the production blanket, vibratory plate, resilient mounts and vibratory ~ drive unit.
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WO93/02861 2 PCT/US92/0~86 -~ DETAILED DESCRIPTI~N9~ PREFERRED
EMBODIMENT

Fig. l shows a side view of the preferred embodiment of the laminating machine which is the subject invention, generally designated 1. Continuous rolls of fabric 2 and 3, at least one of which is semi-permeable to moisture, are suspended on rotatably mounted shafts 4 and 4a. The shafts 4 and 4a are readily removable for replacing the fabric rolls. The rolls of fabric may be wound around a rigid core or tube which is removably mounted on supporting shafts. The fabrics are selected to allow formation of a secure bond there-between ;~ using heat and pressure produced in the subject machine.
Fabric 3A from roll 3 feeds around roller shaft 5 near the ~ bottom of powder bin 7 and then feeds down and around powder ; apportioning roll 8 shown in Fig. 3, thereby trapping powder deposits 12 which have allen through the open bottom of powder bin 7 into cavities 9 oE roller ~. The deposits 12 are struck off flush with the surface of roller 8 by doctor blade 10 for precise control of the quantity in powder deposits 12. The cavities 9 form a regular pattern of powder deposits 12 on the ., upper surface of fabric 3a. Fabric 2a from roll Z is - simultaneously fed around smooth pinch roller 15. The fabric 2a passes around and down past roller 15 to enter the pinch formed between roller 15 and heated pattern roller 11~

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2~93~4:1 WO93/02861 P~T/US92/0~6 Patterned roller 11 sllown in Figs. 1 and 4 is heat~ by means of electrical rod heaters mounted therein and supplied with power through sliding electrical pickups on the shaft of roller 11. Alternately, heat may be supplied by a heated circulating fluid fed into and out of roll 11 through its central shaft via swivel couplings. Whatever heating system is employed, control may be maintained by means of a contact thermal sensing device 16 contacting a surface of roll 11 in a sliding relationship and providing thermostatic control of roll temperature which is selected and set by the operator.
Alternately, a non-contact infra-red temperature probe may be used for the same purpose.
The raised rib pattern 58 of heated roller 11 is shown in Fig. 9 and coincides with the pattern of cavitles 9 in roller 8. The raised rib pattern 58 is timed through chain drive sprockets 17 and 17a and drive chain 18 to place said deposits 12 in the approximate cen~er of the opening between raised ribs 54 of said pattern.
Pinch roller 15 is smooth and therefore has no timing requirement. Smooth pinch rollers 15 and 20 rotate through surface friction of the fabric~as it is pulled through ~he sèries of rollers by chain 18 acting through sprockets 17, 17a, 17b and 17c on the powered rollers ~, 11, 21 and 27.

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WO93/02861 2 0 9 3 1~1 PCT/US92/0~86 ~- Pinch roller 15 is urged toward roller 11 by its own weight, The shaft of roller 15 is free to move vertically in frame slot 3~ and thereby maintain pressure between rollers 11 and 15. Roller 15 may be heated and temperature controlled in a manner similar to tllat of roller 11 should such extra heat input be desired.
Preliminary bonding between fa~ric 3a carrying powder deposits 12 and cover fabric 2a occurs between the raised, heated ribs 54 of pat~ern 58 on roller 8 and the surface of pinch roller 15. There is no pinching applied to said fabrics '' 2a and 3a except where the raised ribs 54 of roller 11 contact t~e smooth surface of roller 15.
The indentations or recesses 54a of roller 11, as shown in Fig. 4 limit bonding of the fabrics 2a and 3a to the contact areas of ribs 54 which bond the sheets of fabric p,assing there-between forming cells. The bond is formed under the influence of the heat and pressure thus applied to the bonding area. This bonding area extends completely around each powder deposit 12 forming cells 52, as shown in Fig. 2, which are square with a bond width and pattern size commensurate with the , rib pattern 58 on roller 11. Longitudinal bond or seal lines 52a and transverse bond lines or seals 52h form the cells. The width of the bond or seal lines is generally such that sheet 25 may be separated into groups`of cells by cutting or splitting - , - - - - . -. - - , , . ,, ~ . .....

' ' W093/02861 2 0 9 3 1 4 1 PCT/US92/0~86 at the centerlines of the bond or seal lines. Four _~nch squares with 1/2" bond or seal line width are typical dimensions of each cell.
The heat from roller 11 may not sufficiently penetrate and fully fuse fabric 2a and 3a to make a satisfactory seal from the pressure and heat of rollers 11 and 15 since the dwell time there-between is very short at production rolling speeds.
Roller 19 is provided to allow additional contact time for heat penetration and fusing by causing the composite sheet 25 to remain in contact with heated roller 11 until said sheet 25 enters a second pinch between roller 11 and roller 20. Said second pinch roller 20 is carried on heated pattern roller 11 and unheated pattern roller 21 approximately as shown in Fig.
1. The weight of smooth pinch roller 20 creates a pinch between rollers 20 and 11 and also between said roller 20 and roller 21. Shaft 32 of smooth roller 20 is free to slide vertically in slot 33 in sidewall 20 and maintain a uniform weight against the fabric layers 2a and 3a passing between said rolls. It is understood that the opposite side of apparatus 1 is the same as the side shown in Fig. 1. but without the drive chain 18 and its chain sprock~ts mounted on the shafts.

~otted lines outline -a section of machine sidewall 50.
;, i ` Sidewalls 50 with cooperating crossmembers and attachments (not .. ...
shown) comprise the frame of machine 1. Guide slots 33 and 34-for rollers 15 and 20 are the same on each : , 10 . - , , ~` . . .
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W093/02861 2 0 9 3 :1 4 ~ PCT/US9~/06486 ~~side. The sheet 25 rides in contact with ribs 54 on heated roller 11 and the seal areas remain on the raised ribs of roller 11 until it has passed through the pinch created by the second pinch roller 20. This second application of force at the ribs helps facilitate a bond or seal at bond or seal lines 52a and 52b to allow operation of the machine at higher speeds or at lower roll temperatures than might be possible with a single pinch roller. In most cases both higher speed and lower temperatures will be possible while still producing an adequate seal or bond.
A third pinch is provided between unheated pattern roller 21 and pinch roller 20. Pattern roller 21 i5 preferably the same as pattern roller 11, except that it is unheated. Pattern roller 21 is timed to pattern roller 11 so that the raised ribs 55 and recesses 55a of roller 21 will coincide with the bond or seal lines 52a and 52b already established on sheet 25. Roller 21 is adjusted in its rotational relationship to roller 21 directly over the pattern established by roller 11 by loosening sprocket 17b on shaft 28 of roller 21, making said rotational adjustment and relocking the sprocket to said shaft. When this is done with chain 18 tightly over sprockets 17a, 17b, and under sprocket 36, the new rotational relationship will be fixed. The longitudinal seal line 52a of the square or - rectangular sealing pattern employed in the machine is satisfied by laterally locating pattern rollers 11 and 21 so ~ .

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W093/02~61 9 3 1 4 ~ PCT/US92/0~86 that e circumferential components of the ribs 54 creat ~~ the longitudinal seal line 52a of said seals are accurately aligned in the machine. Adjustments of roller 19 and/or sprocket 35 will have no effect on said lateral alignment.
The effect of the pinch between cold pattern roller 21 and roller 20 is to consolidate the seal between fabric 2a and fabric 3a. In the passage between the last contact with heated roller 11 and the pinch between smooth rollers 20 and 21, thermoplastic bonding forming the seal will have had time to cool and gain considerable physical strength. Subjecting the seal lines 52a and 52b to yet another application of pressure in its bonded areas insures that the bonds produced may receive a pattern of heating times, repeated pressure applications and bond tempering (or cooling) to il~sure good results with a wide range of heat bondable fabric materials or surface adhesive treatments.
Sheet 25 is now complete after passing between smooth roller 20 and pattern roller 21. The sheet 25 may be quite lumpy because of the mounded condition of powder deposits 12 which were deliberately placed in small mounds so that seal lines 52a and 52b which would later by formed around said deposits would maintain a maximum distance from any seal to any powder deposit margin in order to avoid possible inclusions of powder within said seals. Storage and handling considerations of finished production rolls make it desirable that they be as : ,` ' . ' . .
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WO93/02861 2 0 9 3 1 4 1 P~T/US92/06486 tight and compact as they can reasonable be made. Therefore, the aforementioned lumpiness of the production sheet is preferably reduced.
Sheet 25 is passed over flat plate 37 as it approaches pick-up roll 22. Sheet 25 lies horizontally and in contact with said plate which is vibrated by an eccentric vibrator unit 39 fastened to plate 37 by bracket 40, screws 41 and welding.
Plate 37 and vibrator 39 are mounted in position on frame 50 by means of resilient mounts 38 which allow elastic movements between their two mounting ends. Thus, sheet 25 may be subjected to high frequency vibration causing powder 12 to distribute itself more evenly over the area bounded by the seals 52a and 52b in each cell 52 o~ sheet 2S, thereby reducing sheet 25 to a more uniform thickness and improving its ` suitability for rolling up neatly and compactly on take-up roll 22.
;Take-up drive roll 22 may also be powered from chain 18 through its sprocket 17c. Said take-up drive roll 22 is employed to furnish a drive means for the actual production take-up roll 29 because a difficult problem exists at this point in production. Friction between the semi-plastic . ::
composite sheet and the various smooth and pinch rollers is very low, so that any tendency to ~overeed~, that is, to roll up the production blanket faster than the fabric was passing `~through the patterned rollers may cause one or both fabric ~, .
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: . , wo ~3/02g~ ~ 9 3 ~ ~ ~ PCT/US92/0~86 slleets to slip throug~l one or more "pinches", destroying the regular pattern and possible getting powder into a seal area.
It is also possible to stretcll some fabrics in the the transverse seals 52a while they are softened in the heated zones over ribb 54. Conversely, not enough take up speed results in possible loosening of abric 3a as it passes around roller 8. This will allow powder. to fall out of cavities 9 prematurely and thus to contaminate seal areas of that satisfactory seals could not be made.
Therefore actual proauction take up roll 26 cannot be shaft-driven since its diameter is always changing and therefore it cannot be geared tot he machine drive without producing unstable "take up rates".
It is possible, however, to drive roll 26 through the use of a relatively high subface friction rubber su~faced roller 28 which is always the same diameter and will therefore always produce the same feed rate regardless of the diameter of the rolled up production sheet 26. ~y starting the roll onto roller core tube 23 and placing through-shaft 22 in sidewall 50 slots Z4. The roll 26 may grow from small to large diameter while maintaining a constant take-up rate equal to the surface :, . .
speed of driver roll 27 matched to surface speed of rollers 8, 11 and 21. Production speed of the machine is set by , ..
:controlling the speed of variable speed D.C. motor 53. Said ~;' !
```motor may be closely controlled in RPM over a wide range of ", .
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W093/02861 2 0 9 3 1 ~ 1 PCT/US9~/0~86 loads and may be "jogged~ forward in small increments for making adjustments and threading in new materials.
Sprocket 46 takes up the slack in chain 18 resulting from wear or repositloning of sprocket 35 during timing of pattern rolls 11 and 17. Shaft 47 of sprocket 46 lies in slot 48 of frame sidewall 50 and is urged upwardly by spring 49 to maintain a tension in drive chain 18. Variable speed electric motor 53 provides power tllrough drive gear 53a to power energizing chain 18 and thereby control the through-put speed of production sheet 25.
Coordination of the location of powder deposits 12 with the center of square cells 52 established by roller 11 will not change except when one or both of these rollers are replaced.
The lateral component of said coordination is originally established by adjusting the rotational relationship of roller 8 to sprocket 17 with drive chain 18 in place before locking said sprocket 17 to the shaft of roller 8. The longitudinal component of said relationship is established by lateral spacing of rollers 8 and 11 so that the centerline of cavities 9 line up halfway between raised ribs 54 of pattern 58 on roller 11. ~earing blocks 56, 56a, 56b, 56c, 56d and 56e rotatably support roller shafts to frame sidewalls 50.
It will be apparent to those skilled in th~ art that .~ .
~: various modifications and variations can be made in the foregoing method and apparatus of the present invention and in .

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~ W093t02861 2 ~ 9 3 1 4 ~ PCTtVS92~0~86 ^. the construction of the foregoing method and apparatus ~-~ the ~; present invention without departing from the scope or spirit ofthe invention. Thus, it is intended that the present inventlon , cover the modifications and varlatlons of thls lnvention, : provlded they come within the scope of the appended claims and their equivalents. :.

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Claims (12)

I CLAIM
1. An apparatus for producing a continuous composite fabric sheet having discrete cells, each cell containing a measured volume of superabsorbent material, comprising:

a means for dispensing a superabsorbent material onto a cylindrical apportioning roller;

said apportioning roller having surface cavities for receiving predetermined quantities of said powder and a means for striking off excess powder from said apportioning roller;

a continuous roll of fluid permeable fabric for feeding around the surface of said apportioning roller to hold said superabsorbent material in said cavities and to receive a pattern of deposits of superabsorbent material from said cavities;

a second continuous roll of fabric for contacting said first fabric sheet with its pattern of individual powder deposits to form a continuous composite sheet;

a heated pattern roller having raised areas defining cell patterns larger than the area covered by each deposit of superabsorbent material on said fabric;

a pinch roller in contact with said pattern roller for receiving said composite sheet to apply heat and pressure to selected areas of said composite sheet to selectively bond said fabrics for forming cells having the pattern of the heated pattern roller and containing said individual powder deposits;
and a second pinch roller in contact with said heated pattern roller for receiving said composite sheet also passing there between to maintain sufficient contact time and pressure with the heated pattern roller to provide adequate fusion to form the individual cells in the continuous composite sheet.
2. The apparatus of Claim 1, including:

a second pinch roller in contact with said pattern roller for receiving said continuous sheet for consolidation of the seal pattern on the composite sheet passing there-between.
3. The apparatus of Claim 1, including:

a take-up roll for receiving said continuous composite sheet.
4. The apparatus of Claim 1, including:

means to synchronize the location of the pattern roller to coincide with the deposits of superabsorbent material.
5. The apparatus of Claim 1, including:

a vibratory means for more evenly distributing the deposits of superabsorbent material in the cells of the composite sheet after forming.
6. The apparatus of Claim 3, including:

a "take up" drive roller imparting uniform speed to a collecting roll of varying diameter ----????
7. A method for producing a continuous composite fabric sheet having discrete cells, each cell containing a measured volume of superabsorbent material, comprising:

dispensing a pattern of discrete quantities of superabsorbent material onto a continuous sheet of fluid permeable fabric;

feeding a second continuous sheet of fabric in contact with said first fabric sheet with its pattern of superabsorbent deposits to form a continuous composite sheet;

feeding said composite sheet between a heated pattern roller having raised areas defining cell patterns larger than the area covered by the deposits of superabsorbent material on said fabric and a pinch roller in contact with said pattern roller to apply heat and pressure to selected areas of said fabric to selectively bond said fabrics to form cells having the pattern of said heated roller and containing said individual deposits of superabsorbent material; and feeding said composite sheet between a second pinch roller in contact with said heated pattern roller with the composite sheet also passing there-between to maintain sufficient contact time and pressure with the heated pattern roller to provide adequate fusion at said selective bonds.
8. The methods of Claim 7, including:

feeding said composite sheet between a second pattern roller and a contacting third pinch roller receiving said continuous sheet for consolidation of the seal pattern on the composite sheet passing there-between.
9. The method of Claim 7, including:

feeding the completed composite sheets onto a take-up roll.
10. The method of Claim 7, including:

synchronizing the pattern roller to coincide with the deposits of superabsorbent material to form said cells.
11. The method of Claim 7, including:

applying a vibratory force to said completed composite sheet for distributing the deposits of superabsorbent material in the cells of the composite sheet after forming.
12. The method of Claim 9, including:

maintaining the circumferential speed of the take-up roller with the speed of the continuous composite sheet to compensate for the increase in size as the continuous composite sheet is wound therearound.
CA002093141A 1991-08-01 1992-08-03 Machine and devices incorporated therein for the manufacture of a laminated textile fabric composite material containing a superabsorbent polymer Abandoned CA2093141A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US73883591A 1991-08-01 1991-08-01
US07/738,835 1991-08-01
PCT/US1992/006486 WO1993002861A1 (en) 1991-08-01 1992-08-03 Machine and method for heat seal lamination of textile fabric

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Publication number Priority date Publication date Assignee Title
US5628845A (en) * 1995-09-28 1997-05-13 Thermal Products, Inc. Process for forming hydratable, flexible refrigement media
EP0860158A1 (en) * 1996-12-20 1998-08-26 The Procter & Gamble Company Process for manufacturing individual layered structures comprising particulate material
GB2325432B (en) * 1997-05-21 1999-12-22 Bristol Myers Squibb Co Absorbing aqueous matter
EP0970676A1 (en) * 1998-07-07 2000-01-12 The Procter & Gamble Company A method for sealing an absorbent member
EP0970675A1 (en) * 1998-07-07 2000-01-12 The Procter & Gamble Company A method for cutting and sealing an absorbent member
US6562168B1 (en) 1998-07-07 2003-05-13 The Procter & Gamble Company Method for cutting and sealing an absorbent member
EP0980681A1 (en) * 1998-08-17 2000-02-23 The Procter & Gamble Company A method for cutting and sealing an absorbent member
EP2292199B1 (en) * 2004-07-28 2012-10-10 The Procter and Gamble Company Indirect printing of agm
DE602004026566D1 (en) 2004-07-28 2010-05-27 Procter & Gamble Indirect pressure from AMG
CN106192540A (en) * 2016-07-21 2016-12-07 柳州名品科技有限公司 A kind of food wrapper heater

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US2746223A (en) * 1952-05-09 1956-05-22 E G Staude Mfg Company Inc Apparatus for packaging of powder in small quantities
US3007848A (en) * 1958-03-12 1961-11-07 Vol Pak Inc Method of forming an edible medicinal wafer strip package
US3681173A (en) * 1970-04-13 1972-08-01 Jones & Co Inc R A Heat sealing of thermoplastic films
DE2061719C2 (en) * 1970-05-16 1983-07-21 I.M.A. Industria Macchine Automatiche S.p.A., Ozzano Emilia, Bologna Device for volumetric dosing of bulk material
US4713132A (en) * 1986-05-08 1987-12-15 Kimberly-Clark Corporation Apparatus and method for ultrasonic bonding of a moving web
DE3726640A1 (en) * 1987-08-11 1989-02-23 Paper Converting Mach Gmbh DEVICE FOR LATERAL WELDING OF PLASTIC FILMS
US4854983A (en) * 1987-09-22 1989-08-08 Mobil Oil Corporation Rotary heat sealing method and apparatus
WO1991007319A1 (en) * 1989-11-14 1991-05-30 Therma Rite Pty Limited Apparatus for manufacturing flexible containers

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JPH06501896A (en) 1994-03-03
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EP0560952A4 (en) 1993-12-29
AU2447392A (en) 1993-03-02

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