WO2007126287A1 - Manufacture and apparatus for safety garments using ultrasound fusion - Google Patents

Manufacture and apparatus for safety garments using ultrasound fusion Download PDF

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Publication number
WO2007126287A1
WO2007126287A1 PCT/KR2007/002129 KR2007002129W WO2007126287A1 WO 2007126287 A1 WO2007126287 A1 WO 2007126287A1 KR 2007002129 W KR2007002129 W KR 2007002129W WO 2007126287 A1 WO2007126287 A1 WO 2007126287A1
Authority
WO
WIPO (PCT)
Prior art keywords
fiber sheets
pattern roller
fiber
overlaps
sheets
Prior art date
Application number
PCT/KR2007/002129
Other languages
French (fr)
Inventor
Jae-Sang An
Dae-Hoon Lee
Gi-Soo Chung
Original Assignee
Korea Institute Of Industrial Technology
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 Korea Institute Of Industrial Technology filed Critical Korea Institute Of Industrial Technology
Publication of WO2007126287A1 publication Critical patent/WO2007126287A1/en

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Classifications

    • A—HUMAN NECESSITIES
    • A41—WEARING APPAREL
    • A41D—OUTERWEAR; PROTECTIVE GARMENTS; ACCESSORIES
    • A41D13/00—Professional, industrial or sporting protective garments, e.g. surgeons' gowns or garments protecting against blows or punches
    • A41D13/0002—Details of protective garments not provided for in groups A41D13/0007 - A41D13/1281
    • A41D13/0005—Joints
    • A—HUMAN NECESSITIES
    • A41—WEARING APPAREL
    • A41H—APPLIANCES OR METHODS FOR MAKING CLOTHES, e.g. FOR DRESS-MAKING OR FOR TAILORING, NOT OTHERWISE PROVIDED FOR
    • A41H43/00—Other methods, machines or appliances
    • A41H43/04—Joining garment parts or blanks by gluing or welding ; Gluing presses
    • 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
    • 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
    • B29C65/087—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 both a rotary sonotrode and 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
    • B29C66/10—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
    • B29C66/135—Single hemmed joints, i.e. one of the parts to be joined being hemmed in the joint area
    • B29C66/1352—Single hem to hem 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
    • B29C66/22—Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines said joint lines being in the form of recurring patterns
    • B29C66/221—Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines said joint lines being in the form of recurring patterns being in the form of a sinusoidal wave
    • 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
    • B29C66/70—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
    • B29C66/80—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
    • B29C66/81427—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
    • B29C66/81429—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 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
    • B29C66/81433—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
    • B29C66/81—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
    • B29C66/816—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 mounting of the pressing elements, e.g. of the welding jaws or clamps
    • B29C66/8161—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 mounting of the pressing elements, e.g. of the welding jaws or clamps said pressing elements being supported or backed-up by springs or by resilient 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
    • B29C66/80—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
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/71—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the composition of the plastics material of the parts to be joined
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/73—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset
    • B29C66/735—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the extensive physical properties of the parts to be joined
    • B29C66/7352—Thickness, e.g. very thin
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/73—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset
    • B29C66/739—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset
    • B29C66/7392—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of at least one of the parts being a thermoplastic
    • B29C66/73921—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of at least one of the parts being a thermoplastic characterised by the materials of both parts being thermoplastics
    • 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
    • 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
    • B29K2027/00—Use of polyvinylhalogenides or derivatives thereof as moulding material
    • B29K2027/06—PVC, i.e. polyvinylchloride
    • 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
    • B29K2067/00—Use of polyesters or derivatives thereof, as moulding material
    • 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
    • B29K2077/00—Use of PA, i.e. polyamides, e.g. polyesteramides or derivatives thereof, as moulding material
    • 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
    • B29K2223/00—Use of polyalkenes or derivatives thereof as reinforcement

Definitions

  • the present invention relates to a method and an apparatus of manufacturing airtight safety garments via ultrasonic welding, and more particularly, to a method and an apparatus of manufacturing safety garments by heating and melting synthetic fiber sheets at a melting point or higher via ultrasonic welding and then pressing the fiber sheets against each other to bond them together.
  • the safety garments are used to protect wearers from harmful environments caused by operations in specific work places or from the work places themselves.
  • the safety garments block dusts or minute chemical toxic materials, which are liquid or gas suspending in air, from directly contact the bodies of the wearers while allowing sweat and heat, which are created from the human bodies during the operations, to emit out of the garments, thereby improving amenity and enhancing operation efficiency.
  • the safety garments serve to protect workers from the harmful environments and improve the amenity of the operations thereby improving working efficiency. Accordingly, demands for the safety garments are expected to increase from now on due to increasing safety consciousness of labor unions or employers.
  • a typical manufacturing process of the safety garments includes steps of examining fiber sheets, designing a pattern via CAD, printing the pattern, marking the pattern on the fiber sheets, cutting the fiber sheets according to amounts to be manufactured, sewing the cut fiber sheets using pattern pieces and raw materials, and thermally bonding sewing portions with a seam sealing tape to achieve safety garment products.
  • the present invention is devised to provide to a method and an apparatus of manufacturing safety garments, by which a problem of defective sewing due to seam puckering caused by the pressure of a presser foot and characteristics of fiber sheets can be overcome.
  • the present invention is also devised to provide a method and an apparatus of manufacturing safety garments, by which defects caused in a seam sealing process which thermally bonds seams with a seam tape can be overcome.
  • the present invention is also devised to provide a method and an apparatus of manufacturing safety garments, by which productivity can be economically improved and labor costs can be saved through a process much simpler than common sewing processes.
  • the present invention is also devised to provide a method and an apparatus of manufacturing safety garments, which are endurable against repeated bending of welded portions and usable even after being washed repeatedly.
  • a method of manufacturing safety garments via ultrasonic welding includes:
  • the method of the present invention may further include, after the step
  • the apparatus of manufacturing airtight safety garments via ultrasonic waves of the present invention can adopt ultrasonic welding to omit one step from a two step process which includes sewing and seam sealing to manufacture the safety garments, thereby eliminating reasons of defects that otherwise have occurred in the seam sealing step.
  • the apparatus of manufacturing airtight safety garments via ultrasonic waves of the present invention can save labor expenses and material costs by bonding fiber sheets of the safety garments via ultrasonic welding and thus decrease the unit cost of products as well as enhance yield per unit time, unlike the prior art where at least 70% of labor costs are consumed in the seam sealing step and material costs increase due to high seam sealing costs.
  • the apparatus of manufacturing airtight safety garments via ultrasonic waves of the present invention can be also used to manufacture elbow and knee portions which are repeatedly bent.
  • the safety garments manufactured by the apparatus of the present invention have excellent washproof properties and can protect cross-linkage so as not to be broken by water, thereby preventing the filtration of liquid or gaseous foreign materials.
  • FIG. 1 is a flowchart illustrating a method of manufacturing safety garments of the invention
  • FIG. 2 is a flow diagram illustrating method of manufacturing safety garments of the invention
  • FIG. 3 is a perspective view illustrating an exemplary embodiment of the automatic alignment device shown in FIG. 2;
  • FIG. 4 is a perspective view illustrating another exemplary embodiment of the automatic alignment device shown in FIG. 2;
  • FIG. 5 is a perspective view illustrating the ultrasonic welder shown in FIG. 2;
  • FIG. 6 is a perspective view illustrating welded fiber sheets.
  • Step (a) is carried out to steadily feed fiber sheets.
  • the fiber sheet is raw materials to be fabricated into safety garments, and mainly composed of a synthetic fiber.
  • the fiber sheet may also be implemented with a multilayer structure of different materials. However, corresponding portions of the fiber sheets to be welded together should be composed of synthetic fiber so as not to be properly welded.
  • the fiber sheets include polyolefin, polyester, nylon, PVC and so on, and have a thickness ranging from 0.5mm to 20mm so that both thin and thick fibers can be used. However, this is not intended to limit the resent invention.
  • the fiber sheets are fed and then connected together to produce safety garments.
  • the fiber sheets can be fed with end portions in the same direction partially overlapping so that edges overlap with each other as shown in FIG. 3.
  • the fiber sheets can be overlapped completed as shown in FIG. 4 so that edges thereof can be welded together.
  • the fiber sheets can be fed automatically by feed rollers 11 as shown in FIG. 2.
  • the feed rollers 11 can be provided in a plural pairs so as to feed the two fiber sheets respectively.
  • the feed rollers 11 hold a fiber sheet to feed the fiber sheets at a predetermined speed.
  • Step (b) is carried out to feed the fiber sheets, which are held by the feed rollers, and automatically aligning the edges of the fiber sheets to partially overlap with each other.
  • an automatic alignment device causes the fiber sheets to engage with each other a preset degree so as to be manufacturable.
  • FIG. 3 An exemplary automatic alignment device 15 is shown in FIG. 3.
  • the automatic alignment device 15 shown in FIG. 3 includes a first feed plate 151, which is configured planar to support one of the fiber sheets on a plane and has one folded edge, and a second feed plate 152, which is configured planar to support the other one of the fiber sheets on a plane and has one folded edge.
  • the first feed plate 151 has a generally planar configuration except for a U-shaped edge. That is, the U-shaped edge forms a folded first guide 153, which comes into contact with an edge of a fiber sheet to act as a guide so that the fiber sheet can be discharged correctly.
  • the second feed plate 151 also has a second guide 154 defined by a folded edge.
  • the first guide 153 of the first feed plate and the second guide 154 of the second feed plate overlap with each other at the output sides so that a fiber sheet A is fed to the first feed plate 151 and a fiber sheet B is fed to the second feed plate 151.
  • the fiber sheets are outputted, overlapped with each other at a predetermined overlap width.
  • the feed plates 151 and 152 of the automatic alignment device are configured to overlap with each other at the output sides as shown in FIG. 3 (a) but separated from each other to a predetermined distance at the input sides (i.e., portions where the fiber sheets are fed) so that the fiber sheets can be fed in a completely separated state.
  • This defines paths for the fiber sheets to converge together at the output sides.
  • the fiber sheets can be fed as separated to the right and left as shown in FIG. 3 (a), it is not intended to limit the present invention.
  • the fiber sheets can also be fed as separated vertically as shown in FIG. 3(b).
  • the fiber sheets can be fed respectively along the separate paths as in step (a) or a separator 13 as shown in FIG. 2 can be used.
  • the separator 13 is configured to separate the fiber sheets from each other when the fiber sheets are fed at the same time along the same path.
  • the separator 13 is wedge shaped to separate the fiber sheets into upper and lower ones. Then, the fiber sheets are separated vertically to move along upper and lower paths, and then inputted respectively to input sides of the automatic alignment device as shown in FIG. 3.
  • FIG. 4 Another embodiment of the automatic alignment device is shown in FIG. 4.
  • the automatic alignment device 16 shown in FIG. 4 is configured similar to that shown in FIG. 3. That is, the automatic alignment device 16 includes a first feed plate 161, which is configured planar to support one of the fiber sheets on a plane and has one folded edge, and a second feed plate 162, which is configured planar to support the other one of the fiber sheets on a plane and has one folded edge, a first guide 163 and a second guide 164.
  • FIG. 4(a) shows the guides with the output sides overlapped with each other and the input sides diverged to the right and the left so that the fiber sheets can be fed along different paths.
  • FIG. 4(b) shows the output sides overlapped with each other but the input sides are diverged vertically.
  • step (bl) the edge ends of the fiber sheets are cut clearly in order to facilitate next step.
  • the edges of the fiber sheets are ultrasonically welded.
  • edge ends of the fiber sheets may not be aligned properly. If the fiber sheets are thin, the edge ends may be outputted in a folded state. Accordingly, this step can be performed to trim the edge ends with the automatic trimming device 17.
  • the automatic trimming device 17 serves to automatically cut or trim the edge ends of the fiber sheets which are not ultrasonically welded. If the edge ends of the fiber sheets which are not ultrasonically welded are caught, they may act as a reason that tears the fiber sheets. In addition, repeated bending can readily weaken the edge ends, thereby allowing the infiltration of foreign materials.
  • a cutter automatically cuts or trims unnecessary portions from the fiber sheets while the fiber sheets are passing through the cutter.
  • Step (c) is carried out to adjust pressing pressure according to the thickness of the fiber sheets. Since the degree of welding is varied according to the thickness of the fiber sheets, the pressing pressure is adjusted to ensure optimal welding regardless of the thickness of the fiber sheets. For this purpose, the fiber sheets pass through a height adjustment device 19.
  • the height adjustment device 19 measures a pressure that the air compressor applies to the pattern roller against the fiber sheets regardless of the thickness and type of the fiber sheets, and then automatically adjusts the thickness of the fiber sheets so that the fiber sheets can be better welded by energy transmitted by an ultrasonic oscillator.
  • the pressure of the air compressor applied is 3 to 4.5 bars in the case of thin fiber sheets, and 5 to 6.5 bars in the case of thick fiber sheets.
  • the thickness of the fiber sheets to be used is generally about 0.5 to 20mm.
  • the height that is optimal for ultrasonic welding can be varied according to welding rate, the type of material of the fiber sheets and the quantity of energy created from the ultrasonic oscillator. In general, the height is preferably 0.5 to 10mm. However, it is not intended to limit the present invention.
  • the height adjustment device 19 has a spring 199 mounted on a support of the pattern roller as shown in FIG. 5 so that the pattern roller can press the fiber sheets under a predetermined pressure. With the spring 199, the pattern roller can elastically rise or descend according to the thickness of the fiber sheets thereby adjusting its height.
  • step (d) energy generated by the ultrasonic generator 21 is transmitted to the pattern roller to weld and bond the fiber sheets.
  • the ultrasonic generator 21 includes an ultrasonic oscillator 211, a booster 212 and a tool horn 213 as shown in FIG. 5.
  • the ultrasonic generator transforms it into electric energy of 15 to 50KHz and transmits the transformed electric energy to the ultrasonic oscillator 211.
  • the ultrasonic oscillator 211 converts the electric energy into vibration energy and transmits the converted vibration energy to the booster 212 and the tool horn 213.
  • ultrasonic energy instantaneously generates friction heat to a thermoplastic material with amplitude increase adjusted and pressing conducted, thereby enabling strong molecular bonding.
  • the tool horn is shaped as a circular dish, and rotates at a predetermined speed to prevent the thermoplastic material from sticking to a disk part thereof. The rotating speed is proportional to the speed of an ultrasonic sewing machine.
  • vibration frequency (vibration energy) transmitted as above migrates to the pattern roller 31 arranged above the horn 213. Since the ultrasonic generator 21 including the horn and the pattern roller 31 have different transmission ranges of vibration frequency due to respective material properties and mechanical characteristics, high vibration-induced friction heat takes place in contact areas of the ultrasonic generator and the pattern roller because of different moving ranges of vibration frequency. The vibration-induced friction heat, as a result, welds the fiber sheets placed between the ultrasonic generator and the pattern roller.
  • the overlaps of the fiber sheets are welded as above and then, as shown in FIG. 5, bonded and formed by the pattern roller 31.
  • the pattern roller 31 also has a protruding pattern 33, which can be formed in various shapes so that the fiber sheets can be designed into various patterns.
  • the pattern C of the pattern roller 31 formed as shown in FIG. 6(a) allows upper and lower portions of the welded portions are completely bonded without interruptions.
  • the safety garments should provide continuously welded portions to ensure complete sealing so that chemical materials do not infiltrate through connecting portions of the fiber sheets. Those portions welded by the pattern roller maintain a sufficient degree of tensile strength while serving to prevent any infiltration of liquid or gaseous toxic materials.
  • the pattern roller 31 may be carved with various designs of patterns according to usages.
  • the pattern roller 31 moves on and presses the welded portions of the fiber sheets to bond the welded portions of the fiber sheets, thereby enhancing tensile strength. This can also achieve airtightness separately for the upper and lower portions of the welded portions, thereby blocking the infiltration of liquid or gaseous toxic materials.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Physical Education & Sports Medicine (AREA)
  • Treatment Of Fiber Materials (AREA)

Abstract

A method and an apparatus of manufacturing airtight safety garments via ultrasonic welding, and more particularly, to a method and an apparatus of manufacturing safety garments by heating and melting synthetic fiber sheets at a melting point or higher via ultrasonic welding and then pressing the fiber sheets against each other to bond them together. The method includes: (a) feeding two fiber sheets; (b) automatically aligning edges of the fiber sheets so that the fiber sheets overlap partially with each other; (c) adjusting a height of a pattern roller according to a thickness of overlaps of the fiber sheets; and (d) transmitting energy to the pattern roller, by an ultrasonic generator, to weld and bond the overlaps of the fiber sheets.

Description

Description
MANUFACTURE AND APPARATUS FOR SAFETY GARMENTS
USING ULTRASOUND FUSION
Technical Field
[1] The present invention relates to a method and an apparatus of manufacturing airtight safety garments via ultrasonic welding, and more particularly, to a method and an apparatus of manufacturing safety garments by heating and melting synthetic fiber sheets at a melting point or higher via ultrasonic welding and then pressing the fiber sheets against each other to bond them together. Background Art
[2] In general, the safety garments are used to protect wearers from harmful environments caused by operations in specific work places or from the work places themselves. The safety garments block dusts or minute chemical toxic materials, which are liquid or gas suspending in air, from directly contact the bodies of the wearers while allowing sweat and heat, which are created from the human bodies during the operations, to emit out of the garments, thereby improving amenity and enhancing operation efficiency.
[3] That is, the safety garments serve to protect workers from the harmful environments and improve the amenity of the operations thereby improving working efficiency. Accordingly, demands for the safety garments are expected to increase from now on due to increasing safety consciousness of labor unions or employers.
[4] Recently, workers evading from the harmful environments together with public relations and safety standards enhanced by the government have been increasing work places where the safety garments should be worn as well as improving the quality of the safety garments. In addition to a simple function of blocking the infiltration of external materials, water repellency has been reinforced to actively emit sweat and energy, created by the workers, out of the safety garments. Fiber sheets of the safety garments can block the infiltration of external materials and have fine pores capable of emitting sweat and heat.
[5] A typical manufacturing process of the safety garments includes steps of examining fiber sheets, designing a pattern via CAD, printing the pattern, marking the pattern on the fiber sheets, cutting the fiber sheets according to amounts to be manufactured, sewing the cut fiber sheets using pattern pieces and raw materials, and thermally bonding sewing portions with a seam sealing tape to achieve safety garment products.
[6] In the case of manufacturing the safety garments by a common sewing method, the fiber sheets are sewn with sewing threads. However, if the pressure of a presser foot, the tension of the sewing threads and the type of the fiber sheets are not properly combined, undesirable small wrinkles, which are also referred to as puckering, are formed around a seam of a sewing line.
[7] Since dust or chemical material may infiltrate via seams into the safety garments, a seam sealing process is carried out to thermally bond the seams. However, it is very difficult to perform the seam sealing to those portions having puckering. Accordingly, final products should be discarded as inferior goods even with a simple error. This is the majority of loss expense and at least 70% of labor costs. Therefore, there are urgent demands for a noble method of manufacturing the safety garments, which can overcome such problems to improve productivity. Disclosure of Invention Technical Problem
[8] The present invention is devised to provide to a method and an apparatus of manufacturing safety garments, by which a problem of defective sewing due to seam puckering caused by the pressure of a presser foot and characteristics of fiber sheets can be overcome.
[9] The present invention is also devised to provide a method and an apparatus of manufacturing safety garments, by which defects caused in a seam sealing process which thermally bonds seams with a seam tape can be overcome.
[10] The present invention is also devised to provide a method and an apparatus of manufacturing safety garments, by which productivity can be economically improved and labor costs can be saved through a process much simpler than common sewing processes.
[11] The present invention is also devised to provide a method and an apparatus of manufacturing safety garments, which are endurable against repeated bending of welded portions and usable even after being washed repeatedly. Technical Solution
[12] According to an aspect of the present invention, there is provided a method of manufacturing safety garments via ultrasonic welding. The method of the present invention includes:
[13] (a) feeding two fiber sheets;
[14] (b) automatically aligning edges of the fiber sheets so that the fiber sheets overlap partially with each other;
[15] (c) adjusting a height of a pattern roller according to a thickness of overlaps of the fiber sheets; and
[16] (d) transmitting energy to the pattern roller, by an ultrasonic generator, to weld and bond the overlaps of the fiber sheets. [17] In addition, the method of the present invention may further include, after the step
(b), trimming a portion of the fiber sheets, if the edges of the fiber sheets are not correctly aligned, in order to align edge ends of the fiber sheets.
Advantageous Effects
[18] The apparatus of manufacturing airtight safety garments via ultrasonic waves of the present invention can adopt ultrasonic welding to omit one step from a two step process which includes sewing and seam sealing to manufacture the safety garments, thereby eliminating reasons of defects that otherwise have occurred in the seam sealing step.
[19] The apparatus of manufacturing airtight safety garments via ultrasonic waves of the present invention can save labor expenses and material costs by bonding fiber sheets of the safety garments via ultrasonic welding and thus decrease the unit cost of products as well as enhance yield per unit time, unlike the prior art where at least 70% of labor costs are consumed in the seam sealing step and material costs increase due to high seam sealing costs.
[20] Furthermore, the apparatus of manufacturing airtight safety garments via ultrasonic waves of the present invention can be also used to manufacture elbow and knee portions which are repeatedly bent. The safety garments manufactured by the apparatus of the present invention have excellent washproof properties and can protect cross-linkage so as not to be broken by water, thereby preventing the filtration of liquid or gaseous foreign materials. Brief Description of the Drawings
[21] FIG. 1 is a flowchart illustrating a method of manufacturing safety garments of the invention;
[22] FIG. 2 is a flow diagram illustrating method of manufacturing safety garments of the invention;
[23] FIG. 3 is a perspective view illustrating an exemplary embodiment of the automatic alignment device shown in FIG. 2;
[24] FIG. 4 is a perspective view illustrating another exemplary embodiment of the automatic alignment device shown in FIG. 2;
[25] FIG. 5 is a perspective view illustrating the ultrasonic welder shown in FIG. 2; and
[26] FIG. 6 is a perspective view illustrating welded fiber sheets.
[27] <Major Reference Signs of the Drawings>
[28] 11: feed roller
[29] 13: separator
[30] 15: automatic alignment device
[31] 17: automatic trimming device [32] 21: ultrasonic generator
[33] 31 : pattern roller
Best Mode for Carrying Out the Invention
[34] Hereinafter, a method and an apparatus of manufacturing airtight safety garments via ultrasonic welding will be described in detail in a stepwise fashion.
[35]
[36] (a) Feeding two fiber sheets
[37] Step (a) is carried out to steadily feed fiber sheets. The fiber sheet is raw materials to be fabricated into safety garments, and mainly composed of a synthetic fiber. The fiber sheet may also be implemented with a multilayer structure of different materials. However, corresponding portions of the fiber sheets to be welded together should be composed of synthetic fiber so as not to be properly welded.
[38] In general, available examples of the fiber sheets include polyolefin, polyester, nylon, PVC and so on, and have a thickness ranging from 0.5mm to 20mm so that both thin and thick fibers can be used. However, this is not intended to limit the resent invention.
[39] Generally, two fiber sheets are fed and then connected together to produce safety garments. The fiber sheets can be fed with end portions in the same direction partially overlapping so that edges overlap with each other as shown in FIG. 3. Alternatively, the fiber sheets can be overlapped completed as shown in FIG. 4 so that edges thereof can be welded together.
[40] The fiber sheets can be fed automatically by feed rollers 11 as shown in FIG. 2.
The feed rollers 11 can be provided in a plural pairs so as to feed the two fiber sheets respectively. The feed rollers 11 hold a fiber sheet to feed the fiber sheets at a predetermined speed.
[41]
[42] (b) Automatically aligning edges of the fiber sheets so that the fiber sheets are overlapped partially.
[43] Step (b) is carried out to feed the fiber sheets, which are held by the feed rollers, and automatically aligning the edges of the fiber sheets to partially overlap with each other. In the case of automatically feeding two fiber sheets, it is rare that edges of the fiber sheets are properly aligned. Therefore, an automatic alignment device causes the fiber sheets to engage with each other a preset degree so as to be manufacturable.
[44] An exemplary automatic alignment device 15 is shown in FIG. 3. The automatic alignment device 15 shown in FIG. 3 includes a first feed plate 151, which is configured planar to support one of the fiber sheets on a plane and has one folded edge, and a second feed plate 152, which is configured planar to support the other one of the fiber sheets on a plane and has one folded edge.
[45] As shown in FIG. 3 (a), the first feed plate 151 has a generally planar configuration except for a U-shaped edge. That is, the U-shaped edge forms a folded first guide 153, which comes into contact with an edge of a fiber sheet to act as a guide so that the fiber sheet can be discharged correctly. Likewise, the second feed plate 151 also has a second guide 154 defined by a folded edge.
[46] As shown in FIG. 3(b), the first guide 153 of the first feed plate and the second guide 154 of the second feed plate overlap with each other at the output sides so that a fiber sheet A is fed to the first feed plate 151 and a fiber sheet B is fed to the second feed plate 151. In this fashion, the fiber sheets are outputted, overlapped with each other at a predetermined overlap width.
[47] In addition, the feed plates 151 and 152 of the automatic alignment device are configured to overlap with each other at the output sides as shown in FIG. 3 (a) but separated from each other to a predetermined distance at the input sides (i.e., portions where the fiber sheets are fed) so that the fiber sheets can be fed in a completely separated state. This, as a result, defines paths for the fiber sheets to converge together at the output sides. Although the fiber sheets can be fed as separated to the right and left as shown in FIG. 3 (a), it is not intended to limit the present invention. The fiber sheets can also be fed as separated vertically as shown in FIG. 3(b).
[48] In order for the fiber sheets to converge at the output sides but be conveyed in the separated state at the input sides as mentioned above, the fiber sheets can be fed respectively along the separate paths as in step (a) or a separator 13 as shown in FIG. 2 can be used.
[49] The separator 13 is configured to separate the fiber sheets from each other when the fiber sheets are fed at the same time along the same path. The separator 13 is wedge shaped to separate the fiber sheets into upper and lower ones. Then, the fiber sheets are separated vertically to move along upper and lower paths, and then inputted respectively to input sides of the automatic alignment device as shown in FIG. 3.
[50] Another embodiment of the automatic alignment device is shown in FIG. 4. The automatic alignment device 16 shown in FIG. 4 is configured similar to that shown in FIG. 3. That is, the automatic alignment device 16 includes a first feed plate 161, which is configured planar to support one of the fiber sheets on a plane and has one folded edge, and a second feed plate 162, which is configured planar to support the other one of the fiber sheets on a plane and has one folded edge, a first guide 163 and a second guide 164.
[51] In the automatic alignment device 16 shown in FIG. 4, the same edges of the fiber sheets in an overlapped state can be welded together. For this purpose, the first and second guides 163 and 164 are arranged in the same direction. [52] FIG. 4(a) shows the guides with the output sides overlapped with each other and the input sides diverged to the right and the left so that the fiber sheets can be fed along different paths. Referring to FIG. 4(b), the output sides are overlapped with each other but the input sides are diverged vertically.
[53]
[54] (bl) Trimming predetermined portions of fiber sheets to correctly align edge ends of fiber sheets
[55] In step (bl), the edge ends of the fiber sheets are cut clearly in order to facilitate next step. In a state where the two fiber sheets automatically are aligned in step (b), the edges of the fiber sheets are ultrasonically welded. However, in the case of feeding the respective fiber sheets in an overlapping position, edge ends of the fiber sheets may not be aligned properly. If the fiber sheets are thin, the edge ends may be outputted in a folded state. Accordingly, this step can be performed to trim the edge ends with the automatic trimming device 17.
[56] The automatic trimming device 17 serves to automatically cut or trim the edge ends of the fiber sheets which are not ultrasonically welded. If the edge ends of the fiber sheets which are not ultrasonically welded are caught, they may act as a reason that tears the fiber sheets. In addition, repeated bending can readily weaken the edge ends, thereby allowing the infiltration of foreign materials. A cutter automatically cuts or trims unnecessary portions from the fiber sheets while the fiber sheets are passing through the cutter.
[57]
[58] Cc) Adjusting height of pattern roller according to thickness of overlaps of fiber sheets
[59] Step (c) is carried out to adjust pressing pressure according to the thickness of the fiber sheets. Since the degree of welding is varied according to the thickness of the fiber sheets, the pressing pressure is adjusted to ensure optimal welding regardless of the thickness of the fiber sheets. For this purpose, the fiber sheets pass through a height adjustment device 19.
[60] The height adjustment device 19 measures a pressure that the air compressor applies to the pattern roller against the fiber sheets regardless of the thickness and type of the fiber sheets, and then automatically adjusts the thickness of the fiber sheets so that the fiber sheets can be better welded by energy transmitted by an ultrasonic oscillator.
[61] The pressure of the air compressor applied is 3 to 4.5 bars in the case of thin fiber sheets, and 5 to 6.5 bars in the case of thick fiber sheets. The thickness of the fiber sheets to be used is generally about 0.5 to 20mm. The height that is optimal for ultrasonic welding can be varied according to welding rate, the type of material of the fiber sheets and the quantity of energy created from the ultrasonic oscillator. In general, the height is preferably 0.5 to 10mm. However, it is not intended to limit the present invention.
[62] The height adjustment device 19 has a spring 199 mounted on a support of the pattern roller as shown in FIG. 5 so that the pattern roller can press the fiber sheets under a predetermined pressure. With the spring 199, the pattern roller can elastically rise or descend according to the thickness of the fiber sheets thereby adjusting its height.
[63]
[64] (d) Transmitting energy to pattern roller via ultrasonic generator to weld and bond overlaps of fiber sheets
[65] In step (d), energy generated by the ultrasonic generator 21 is transmitted to the pattern roller to weld and bond the fiber sheets. The ultrasonic generator 21 includes an ultrasonic oscillator 211, a booster 212 and a tool horn 213 as shown in FIG. 5.
[66] When the ultrasonic generator is supplied with electric power of AC 220V (50 to
60Hz), the ultrasonic generator transforms it into electric energy of 15 to 50KHz and transmits the transformed electric energy to the ultrasonic oscillator 211. Then, the ultrasonic oscillator 211 converts the electric energy into vibration energy and transmits the converted vibration energy to the booster 212 and the tool horn 213. At this time, ultrasonic energy instantaneously generates friction heat to a thermoplastic material with amplitude increase adjusted and pressing conducted, thereby enabling strong molecular bonding. The tool horn is shaped as a circular dish, and rotates at a predetermined speed to prevent the thermoplastic material from sticking to a disk part thereof. The rotating speed is proportional to the speed of an ultrasonic sewing machine.
[67] In the meantime, vibration frequency (vibration energy) transmitted as above migrates to the pattern roller 31 arranged above the horn 213. Since the ultrasonic generator 21 including the horn and the pattern roller 31 have different transmission ranges of vibration frequency due to respective material properties and mechanical characteristics, high vibration-induced friction heat takes place in contact areas of the ultrasonic generator and the pattern roller because of different moving ranges of vibration frequency. The vibration-induced friction heat, as a result, welds the fiber sheets placed between the ultrasonic generator and the pattern roller.
[68] The overlaps of the fiber sheets are welded as above and then, as shown in FIG. 5, bonded and formed by the pattern roller 31. The pattern roller 31 also has a protruding pattern 33, which can be formed in various shapes so that the fiber sheets can be designed into various patterns.
[69] The pattern C of the pattern roller 31 formed as shown in FIG. 6(a) allows upper and lower portions of the welded portions are completely bonded without interruptions. The safety garments should provide continuously welded portions to ensure complete sealing so that chemical materials do not infiltrate through connecting portions of the fiber sheets. Those portions welded by the pattern roller maintain a sufficient degree of tensile strength while serving to prevent any infiltration of liquid or gaseous toxic materials.
[70] Accordingly, the pattern roller 31 may be carved with various designs of patterns according to usages. The pattern roller 31 moves on and presses the welded portions of the fiber sheets to bond the welded portions of the fiber sheets, thereby enhancing tensile strength. This can also achieve airtightness separately for the upper and lower portions of the welded portions, thereby blocking the infiltration of liquid or gaseous toxic materials.
[71] If the pattern D is interrupted as shown in FIG. 6(b), chemical materials may pass through interruptions of welded portions and thus an enough sealing function cannot be achieved.
[72] While the present invention has been described with reference to the particular illustrative embodiments and the accompanying drawings, it is not to be limited thereto but will be defined by the appended claims. It is to be appreciated that those skilled in the art can substitute, change or modify the embodiments into various forms without departing from the scope and spirit of the present invention.

Claims

Claims
[1] A method of manufacturing safety garments via ultrasonic welding, comprising:
(a) feeding two fiber sheets;
(b) automatically aligning edges of the fiber sheets so that the fiber sheets overlap partially with each other;
(c) adjusting a height of a pattern roller according to a thickness of overlaps of the fiber sheets; and
(d) transmitting energy to the pattern roller, by an ultrasonic generator, to weld and bond the overlaps of the fiber sheets.
[2] The method according to claim 1, further comprising: after the step (b), trimming a portion of the fiber sheets, if the edges of the fiber sheets are not correctly aligned, to align edge ends of the fiber sheets.
[3] The method according to claim 1, wherein the step (b) is carried out by feeding the fiber sheets to a pair of feed plates, respectively, each of the feed plates having a guide with a folded edge.
[4] The method according to claim 3, wherein each of the feed plates has an input side, where a corresponding one of the fiber sheets is fed, and an output side, where the fiber sheet is discharged, wherein the feed plates are separated from each other at the input sides and overlap at least partially with each other at the output sides.
[5] The method according to claim 1, wherein the step (d) comprises converting transmitted electric energy into mechanical energy, by the ultrasonic generator, to perform welding caused by friction heat due to a vibration frequency difference between the ultrasonic generator and the pattern roller.
[6] The method according to claim 1, wherein the pattern roller has a pattern to form a continuous weld in the overlaps of the fiber sheets.
[7] An apparatus of manufacturing safety garments via ultrasonic welding, comprising: feed rollers for feeding two fiber sheets; an alignment device for automatically aligning edges of the fiber sheets in order to discharge the fed fiber sheets in a partially overlapping state; a pattern roller arranged to contact overlaps of the fiber sheets and having a pattern formed thereon to press the fiber sheets; a height adjustment device for adjusting a height of the pattern roller according to a thickness of the overlaps of the fiber sheets; and an ultrasonic generator for transmitting energy to the pattern roller to weld the overlaps of the fiber sheets together.
[8] The apparatus according to claim 7, wherein the feed rollers are arranged in different paths to feed each of the fiber sheets along each of the different paths.
[9] The apparatus according to claim 7, further comprising an automatic trimming device for trimming a portion of the fiber sheets, if the edges of the fiber sheets are not correctly aligned, in order to align edge ends of the fiber sheets.
[10] The apparatus according to claim 7, wherein the automatic alignment device includes a pair of feed plates each configured as a planar plate with a folded guide formed at a side edge thereof, wherein each of the feed plates includes an input side, where a corresponding one of the fiber sheets is fed, and an output side, where the fiber sheet is discharged, and wherein the feed plates are separated from each other at the input sides and overlapping at least partially with each other at the output sides.
[11] The apparatus according to claim 10, wherein the automatic alignment device further includes a separator for separating the fed fiber sheets from each other to move along different paths.
[12] The apparatus according to claim 7, wherein the ultrasonic generator transforms electric energy into mechanical energy to weld the overlaps of the fiber sheets together by friction heat due to a vibration frequency difference between the ultrasonic generator and the pattern roller.
[13] The apparatus according to claim 7, wherein the pattern roller has a continuous pattern formed thereon.
[14] The apparatus according to claim 7, wherein the height adjustment device comprises a spring mounted on a support frame of the pattern roller, the spring capable of elastically rising or descending according to a thickness of the fiber sheets to enable a contact with the fiber sheets under a predetermined pressure.
PCT/KR2007/002129 2006-05-02 2007-05-01 Manufacture and apparatus for safety garments using ultrasound fusion WO2007126287A1 (en)

Applications Claiming Priority (2)

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KR10-2006-0039378 2006-05-02
KR1020060039378A KR100685665B1 (en) 2006-05-02 2006-05-02 Manufacture and apparatus for safety garments using ultrasound fusion

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WO2007126287A1 true WO2007126287A1 (en) 2007-11-08

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KR100856020B1 (en) * 2007-07-03 2008-09-02 한국생산기술연구원 Pad for absobing percussion and helmet using thereof
KR101033396B1 (en) 2008-05-21 2011-05-09 이보일 Non Overlapping Sewing Method and the Cloth of the same
KR100912938B1 (en) * 2008-10-08 2009-08-20 조기경 Industrial processing apparatus and the method for whole wig cloth and part
KR101293456B1 (en) 2011-11-09 2013-08-07 한국생산기술연구원 Finish processing method of seamless sportswear and outdoor clothing
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KR20160121859A (en) 2015-04-13 2016-10-21 윤학균 Non-sewing seam sealing type fabric sutured texture for chemical protective coat and manufacturing method thereof
KR101742208B1 (en) * 2016-12-02 2017-06-15 주식회사 에스투라인 Ultrasonic adhering machine for protective clothing and manufacture methods thereby and protective clothing thereby
KR102006085B1 (en) * 2017-12-29 2019-07-31 정욱 Apparatus for manufacturing disposable protective garments and surgeon gowns
KR102658671B1 (en) * 2020-07-21 2024-04-19 신왕수 the method for manufacturing the inside shirt
KR102332455B1 (en) * 2021-02-02 2021-12-01 박노원 Seamless protective clothing and manufacturing method thereof
KR102341410B1 (en) * 2021-10-05 2021-12-21 (주)진영씨엔에스 Seamless device and disposable garments manufactured thereby
KR20240081533A (en) 2022-11-30 2024-06-10 주식회사 한컴라이프케어 Textiles for chemical proof clothes and seamtape therefor

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CN106539174B (en) * 2015-09-18 2018-05-25 兄弟工业株式会社 Adhering device

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