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WO2025149319A1 - Procédé et dispositif permettant de relier ds pièces composées de textile tissé de bande plastique, sacs fabriqués à partir de celles-ci, dispositifs de fabrication et de fermeture de sacs, et ensembles constitués de pièces composées de textile tissé de bande plastique, et dispositifs de liaison - Google Patents

Procédé et dispositif permettant de relier ds pièces composées de textile tissé de bande plastique, sacs fabriqués à partir de celles-ci, dispositifs de fabrication et de fermeture de sacs, et ensembles constitués de pièces composées de textile tissé de bande plastique, et dispositifs de liaison

Info

Publication number
WO2025149319A1
WO2025149319A1 PCT/EP2024/086795 EP2024086795W WO2025149319A1 WO 2025149319 A1 WO2025149319 A1 WO 2025149319A1 EP 2024086795 W EP2024086795 W EP 2024086795W WO 2025149319 A1 WO2025149319 A1 WO 2025149319A1
Authority
WO
WIPO (PCT)
Prior art keywords
plastic ribbon
ribbon fabric
plastic
fabric
unit
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.)
Pending
Application number
PCT/EP2024/086795
Other languages
German (de)
English (en)
Inventor
David Grabenweger
René KOLM
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.)
Starlinger and Co GmbH
Original Assignee
Starlinger and Co GmbH
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 Starlinger and Co GmbH filed Critical Starlinger and Co GmbH
Publication of WO2025149319A1 publication Critical patent/WO2025149319A1/fr
Pending legal-status Critical Current
Anticipated expiration legal-status Critical

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
    • B29C66/01—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
    • 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
    • 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
    • B29C65/10—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using hot gases (e.g. combustion gases) or flames coming in contact with at least one of the parts to be joined
    • B29C65/103—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using hot gases (e.g. combustion gases) or flames coming in contact with at least one of the parts to be joined direct heating both surfaces 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
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/48—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding
    • B29C65/4805—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding characterised by the type of adhesives
    • B29C65/481—Non-reactive adhesives, e.g. physically hardening adhesives
    • B29C65/4815—Hot melt adhesives, e.g. thermoplastic adhesives
    • 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
    • B29C65/48—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding
    • B29C65/486—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding characterised by their physical form being non-liquid, e.g. in the form of granules or powders
    • 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
    • B29C65/48—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding
    • B29C65/50—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding using adhesive tape, e.g. thermoplastic tape; using threads or the like
    • B29C65/5042—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding using adhesive tape, e.g. thermoplastic tape; using threads or the like covering both elements 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
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/48—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding
    • B29C65/52—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding characterised by the way of applying the adhesive
    • B29C65/526—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding characterised by the way of applying the adhesive by printing or by transfer from the surfaces of elements carrying the adhesive, e.g. using brushes, pads, rollers, stencils or silk screens
    • 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
    • B29C65/78—Means for handling the parts to be joined, e.g. for making containers or hollow articles, e.g. means for handling sheets, plates, web-like materials, tubular articles, hollow articles or elements to be joined therewith; Means for discharging the joined articles from the joining apparatus
    • B29C65/7858—Means for handling the parts to be joined, e.g. for making containers or hollow articles, e.g. means for handling sheets, plates, web-like materials, tubular articles, hollow articles or elements to be joined therewith; Means for discharging the joined articles from the joining apparatus characterised by the feeding movement of the parts to be joined
    • B29C65/7861—In-line machines, i.e. feeding, joining and discharging are in one production line
    • B29C65/787—In-line machines, i.e. feeding, joining and discharging are in one production line using conveyor belts or conveyor chains
    • 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
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/40—General aspects of joining substantially flat articles, e.g. plates, sheets or web-like materials; Making flat seams in tubular or hollow articles; Joining single elements to substantially flat surfaces
    • B29C66/41—Joining substantially flat articles ; Making flat seams in tubular or hollow articles
    • B29C66/43—Joining a relatively small portion of the surface of said articles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/40—General aspects of joining substantially flat articles, e.g. plates, sheets or web-like materials; Making flat seams in tubular or hollow articles; Joining single elements to substantially flat surfaces
    • B29C66/41—Joining substantially flat articles ; Making flat seams in tubular or hollow articles
    • B29C66/43—Joining a relatively small portion of the surface of said articles
    • B29C66/431—Joining the articles to themselves
    • B29C66/4312—Joining the articles to themselves for making flat seams in tubular or hollow articles, e.g. transversal seams
    • B29C66/43121—Closing the ends of tubular or hollow single articles, e.g. closing the ends of bags
    • 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
    • B29C66/432—Joining a relatively small portion of the surface of said articles for making tubular articles or closed loops, e.g. by joining several sheets ; for making hollow articles or hollow preforms
    • B29C66/4324—Joining a relatively small portion of the surface of said articles for making tubular articles or closed loops, e.g. by joining several sheets ; for making hollow articles or hollow preforms for making closed loops, e.g. belts
    • 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
    • B29C66/47—Joining single elements to sheets, plates or other substantially flat surfaces
    • B29C66/472—Joining single elements to sheets, plates or other substantially flat surfaces said single elements being substantially flat
    • B29C66/4722—Fixing strips to surfaces other than edge faces
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/72—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the structure of the material of the parts to be joined
    • B29C66/729—Textile or other fibrous material made from plastics
    • B29C66/7292—Textile or other fibrous material made from plastics coated
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—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
    • B29C66/8341—Roller, cylinder or drum types; Band or belt types; Ball types
    • B29C66/83431—Roller, cylinder or drum types; Band or belt types; Ball types rollers, cylinders or drums cooperating with bands or belts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/712—Containers; Packaging elements or accessories, Packages
    • B29L2031/7128—Bags, sacks, sachets

Definitions

  • the invention relates to a method and a device for joining pieces of plastic ribbon fabric, to bags produced therewith, and to devices for producing and closing bags.
  • the invention further relates to sets of pieces of first and second plastic ribbon fabrics and at least one device for connecting the first and second plastic ribbon fabrics.
  • pieces of plastic tape fabric In the packaging industry, the task of joining pieces of plastic tape fabric together often arises, for example, in the manufacture and sealing of plastic tape fabric bags.
  • piece also includes the synonymous terms "part, section, element.”
  • pieces of plastic tape fabric include bag bodies, top sheets, valve sheets, and bag sealing tapes, as well as packaging.
  • Document US 4190010 A1 describes a method for forming a seam that joins two edges of a piece of fabric coated on one side with a waterproof, radio-frequency weldable plastic material, creating a waterproof seam.
  • the two edges are positioned with the coated sides facing outward.
  • a binding strip is placed over the coated sides, with the side of the binding strip in contact with the coated sides itself coated with a radio-frequency activated material.
  • a radio-frequency field is applied to the seam to weld adjacent coated surfaces of the binding strip and the fabric together.
  • US 2019/0032286 Al presents a fully recyclable artificial turf that solves the problem of joining existing artificial turf.
  • DE 4240285 A1 describes a device for concealing a pot or household sponge.
  • sacks made of plastic tape fabric have established themselves as a versatile packaging material.
  • the starting material for such sacks is a tubular fabric, particularly a tubular circular fabric, or a flat fabric joined to form a tube, with at least one open end of the tubular fabric being sealed.
  • first and/or second thermoplastic polymer is selected from PP, HDPE, or PET.
  • the first and second thermoplastic polymers can be selected from the same material or from different materials.
  • the ribbons of the plastic ribbon fabrics can also contain additives for special properties, such as color or UV protection, or—in the case of PET—to reduce the tendency to splice.
  • the third and/or fourth thermoplastic polymers are selected from: PET, PP, PE, or a copolymer or terpolymer containing two or three of the following monomers: ethylene, propylene, vinyl acetate, alkyl acrylate, maleic anhydride, alpha-olefin.
  • the third and fourth thermoplastic polymers can be selected from the same material or from different materials.
  • the second plastic ribbon fabric is provided on its surface opposite the weldable coating with an optionally printed coating or a laminated plastic film.
  • the first and second plastic ribbon fabrics form longitudinal sections of a flat, web-like substrate, wherein the flat, web-like substrate is shaped into a tube such that the discrete particles of the first plastic ribbon fabric are brought into contact with the weldable coating of the second plastic ribbon fabric.
  • the substrate expediently has a base layer made of a plastic ribbon fabric, wherein in this embodiment the first and second plastic ribbon fabrics together form the base layer made of the plastic ribbon fabric.
  • the discrete particles of the first plastic ribbon fabric are arranged in an edge section of the flat, web-like substrate.
  • a sack is provided with a sack body, wherein a bottom is formed at at least one end of the sack body by folding the ends of the sack body, and the bottom is connected to at least one cover sheet.
  • the sack body and the cover sheet are connected to one another according to the method according to the invention, wherein the cover sheet forms the first plastic ribbon fabric and the sack body forms the second plastic ribbon fabric, or wherein the cover sheet forms the second plastic ribbon fabric and the sack body forms the first plastic ribbon fabric.
  • the former embodiment represents the normal case; the latter embodiment is preferable when the sack body is to be made non-slip by the application of the discrete particles.
  • An embodiment of the set according to the invention in which the pieces of the first plastic ribbon fabric form sealing bands and the pieces of the second plastic ribbon fabric form tubular bag bodies with or without side folds, or in which the pieces of the second plastic ribbon fabric form the sealing bands and the pieces of the first plastic ribbon fabric form the tubular bag bodies, further comprises
  • a connecting unit which is arranged on the conveyor device in the region of the open ends of the bag bodies, wherein the connecting unit has a device for feeding the sealing tape and is designed to arrange the sealing tape in a U-shape or V-shape enclosing the open end of each bag body, wherein the connecting unit has the connecting device for connecting the sealing tape to the bag body by applying heat and pressure.
  • Fig. 1 shows schematically an apparatus for producing a flexible web-shaped substrate material for use in the method according to the invention.
  • Fig. 2 shows a substrate material made of a plastic ribbon fabric with a plurality of discrete polymer particles on its surface and a plastic coating on its other surface for use in the method according to the invention.
  • Fig. 3 shows a device for carrying out the connection method according to the invention.
  • Fig. 4 shows a substrate with a plastic ribbon fabric that can be connected to a tube.
  • Fig. 5a, 5b, 5c show a bag according to the invention.
  • Fig. 6 shows a device for producing the bag of Fig. 5a, 5b, 5c.
  • Fig. 7 shows a device for producing or closing another bag according to the invention.
  • a substrate material 2 shown in cross-section in Fig. 2 is explained with reference to the schematic representation in Fig. 1, which has a first plastic ribbon fabric 3 as the carrier material, the ribbons of which are made of stretched plastic and contain a first thermoplastic polymer, wherein discrete particles 7 containing a third thermoplastic polymer are fixed to a first surface 3a of the first plastic ribbon fabric 3.
  • the first plastic ribbon fabric 3 is provided with a plastic coating 4, which is applied to the second surface 3b, for example, using a slot die 11 and can subsequently be printed.
  • the first thermoplastic polymer is selected from PP, HDPE or PET.
  • the third thermoplastic polymer is selected from PET, PP, PE, or a co- or terpolymer containing two or three of the following monomers: ethylene, propylene, vinyl acetate, alkyl acrylate, maleic anhydride, alpha-olefin.
  • Fig. 1 schematically shows a device 1 for producing the flexible web-shaped substrate material 2.
  • the web-shaped first plastic ribbon fabric 3 is fed to this device 1 from a roll on which it is wound, by means of a driven pair of rollers 5 and reaches a release surface 6 of the device 1.
  • the release surface 6 is designed as a heated endless conveyor belt circulating around rollers which is preferably equipped with a surface made of polytetrafluoroethylene (PTFE), known under the brand name "Teflon", or a material with similar properties to PTFE.
  • PTFE polytetrafluoroethylene
  • Discrete particles 7 containing the third thermoplastic polymer are applied from a container 8, for example by means of a spreading roller, in a large number and in as even a distribution as possible onto the release surface 6.
  • the heated release surface 6 has a temperature that is above a softening temperature of the third thermoplastic polymer.
  • the particles 7 heat up on the release surface above the softening temperature of the third thermoplastic polymer and, in the softened state, adhere sufficiently to the release surface 6 so that they do not fall off the release surface 6 even during their transport on the rotating release surface 6.
  • the first plastic ribbon fabric 3 and the release surface 6 pass through a pair of rollers 9 so that the particles 7 on the release surface 6 face the first surface 3a of the first plastic ribbon fabric 3.
  • the pair of rollers 9 presses the particles 7 against the first surface 3a of the first plastic ribbon fabric 3, causing the softened particles 7 to adhere to the first surface 3a of the first plastic ribbon fabric 3. Subsequently, the first surface 3a of the first plastic ribbon fabric 3, with the particles 7 transferred thereto, moves away from the release surface 6, which is thus ready for the renewed application of particles 7.
  • the first surface 3a of the first plastic ribbon fabric 3 is then cooled until the particles 7 have a temperature below the softening temperature of the third polymer. In this embodiment, cooling is carried out actively by means of a cooling device 10.
  • passive cooling e.g. by ambient air, can also be provided, in which the particles 7 on the first plastic ribbon fabric 3 are allowed to cool.
  • a plastic ribbon fabric 3 which is already provided with the plastic coating 4 or a laminated plastic film on the second surface 3b can be provided as a roll material.
  • the process of bonding the substrate material 2 to a second plastic ribbon fabric 14, which is provided with a weldable coating 15 over its entire surface, is explained using the device 20 schematically shown in Fig. 3.
  • the second plastic ribbon fabric 14 is woven from stretched plastic ribbons containing a second thermoplastic polymer.
  • the weldable coating 15 contains a fourth thermoplastic polymer.
  • the second thermoplastic polymer is selected from PP, HDPE, or PET.
  • the fourth thermoplastic polymer is selected from PET, PP, PE, or a copolymer or terpolymer containing two or three of the following monomers: ethylene, propylene, vinyl acetate, alkyl acrylate, maleic anhydride, and alpha-olefin.
  • the weldable coating 15 can be applied to the second plastic ribbon fabric 14, for example, using slot dies.
  • the second plastic ribbon fabric 14 is fed onto a first supply unit designed as a conveyor device 22, such that the second plastic ribbon fabric rests against the conveyor device 22 and its weldable coating 15 is exposed, facing away from the conveyor device 22.
  • the second plastic ribbon fabric 14 can be a flat material or a tubular material and, for example, form a sack body. If the second plastic ribbon fabric 14 is a tubular material, it can optionally be provided with side folds.
  • the substrate material 2 is fed via a second supply unit, which is designed as a roller 21, in such a way that the particles 7 of the first plastic ribbon fabric 3 face the weldable coating 15 of the second plastic ribbon fabric 14 and the optional plastic coating 4 rests against the surface of the roller 21.
  • the first plastic ribbon fabric 3 or the substrate material 2 produced therefrom can, for example, form a cover sheet for a bag bottom, a valve sheet for a bag, or a sealing tape or sealing band for a bag.
  • the conveyor device 22 and the roller 21 are spaced so closely apart that the substrate material 2 and the second plastic ribbon fabric 14 with the weldable coating 15 are pressed against each other.
  • a counter-roller can be arranged on the side of the conveyor belt facing away from the roller 21 to generate the necessary pressing pressure, supporting the conveyor belt.
  • the weldable coating 15 and the particles 7 are heated above their softening temperature by a heating unit.
  • an air pump 23 is provided, the air flow generated by which is heated by a heating device 24.
  • the heated air flow is then directed through an air nozzle 25 into the gap between the substrate material 2 and the second plastic ribbon fabric 14.
  • the heated air flow softens the particles 7 of the first plastic ribbon fabric 3 and the weldable coating 15 of the second plastic ribbon fabric 14.
  • the discrete particles 7 and the flat weldable coating 15 bond together to form a connection with high strength.
  • the joined pieces of the first and second plastic ribbon fabrics 3, 14 are cooled.
  • Fig. 4 shows the joining of a flat, web-shaped substrate 16 to form a tube.
  • Opposing longitudinal sections of the substrate 16 are formed by the first plastic ribbon fabric 3 and the second plastic ribbon fabric 14.
  • the substrate 16 has a plastic ribbon fabric that forms both the first plastic ribbon fabric 3 and the second plastic ribbon fabric 14.
  • One surface of the substrate 16 is provided with the discrete particles 7.
  • the surface of the substrate 16 opposite the surface with the particles 7 has the weldable layer 15.
  • the particles 7 are exposed on one longitudinal section of the substrate 16.
  • the remaining area is provided with a plastic fleece 17 that is bonded to the particles 7.
  • the substrate 16 is formed into a tube such that the discrete particles 7 are brought into contact with the weldable coating 15, heated above the softening temperature and pressed against each other so that a strong bond is formed.
  • Figures 5a, 5b, and 5c show a sack 30 according to the invention in side view, front view, and in a cross-section through its closed upper end.
  • the sack 30 has a sack body 31 with side gussets 32 and an upper end, wherein the upper end is closed by a sealing tape 33 and sewn by an optional seam 34.
  • the sealing tape 33 is formed by a substrate material 2 comprising the first plastic tape fabric 3, the discrete particles 7 applied thereto, and a plastic coating 4, as also shown in Fig. 2.
  • the sack body 31 is formed by the second plastic tape fabric 14 with the weldable coating 15.
  • the sack body 31 and the sealing tape 33 are connected to one another by means of the connection method explained above.
  • Fig. 6 schematically shows the device for closing the open end of the bag 30 with side gussets 32.
  • the tubular bag bodies 31 are conveyed lying flat in the transverse direction on a conveyor device 35.
  • a connecting unit 36 is arranged at the open ends of the bag bodies 31.
  • This connecting unit 36 has a device for feeding the sealing band 33.
  • the sealing band 33 is arranged in a U-shape or V-shape around the open end of each bag body 31 and, under the application of heat and pressure, is bonded to the weldable Coating 15 of the bag body 31 is welded, for which a connecting device 20 according to Fig. 3 is provided.
  • Fig. 7 schematically shows bags 40 according to the invention designed as box valve bags and their production.
  • Each bag 40 has a bag body 41, at the ends of which bottoms 42, 43 are formed by folding the bag body 41.
  • the bottom 42 is connected to a cover sheet 44 and to a valve sheet 47.
  • the bottom 43 is connected, for example, to two cover sheets 45, 46.
  • the cover sheets 44, 45, 46 and the valve sheet 47 are formed from a substrate material 2 consisting of the first plastic ribbon fabric 3, the discrete particles 7 applied thereto and a plastic coating 4, as shown in Fig. 2.
  • the bag body 41 is formed from the second plastic ribbon fabric 14 with the weldable coating 15, as shown in Fig. 2.
  • the bonding of the substrate material 2, from which the cover sheets 44, 45, 46 and the valve sheet 47 are made, to the weldable coating 15 of the second plastic ribbon fabric 14 of the bag body 41 can be achieved using the device 20 shown in Fig. 3. Individual units of the device for producing the bag 40 are schematically illustrated in Fig. 7 and will now be explained.
  • the bag bodies 41 are to be made non-slip by applying the discrete particles 7, the first plastic ribbon fabric 3 forms the bag body 41, and the second plastic ribbon fabric 14 forms the cover sheets 44, 45, 46 and the valve sheet 47.
  • the flat-lying tubular bag bodies 41 are transported transversely from bottom to top in the drawing on a conveyor device (not shown).
  • Unit A shows the folding of bottoms 42, 43 at the open ends of the tubular bag body 41 by pulling the open ends apart and folding over portions of the bag body 41 to form flaps.
  • the bag body 41 may consist of a circularly woven tube or of a flat fabric whose longitudinal ends are joined together, as shown in Fig. 4.
  • Unit B shows the insertion of a valve leaf 47 into the base 42 and the connection of the valve leaf 47 to the second plastic ribbon fabric 14 or its weldable coating 15 of the bag body 41 according to the connection method according to the invention.
  • Unit C shows the application of a first cover sheet 45 into a first area of the bag bottom 43 and connecting the first cover sheet 45 to the second Plastic ribbon fabric 14 or its weldable coating 15 of the bag body 41 according to the joining method according to the invention.
  • Unit D shows the application of a second cover sheet 46 to a second region of the bag bottom 43 and the bonding of the second cover sheet 46 to the second plastic ribbon fabric 14 or its weldable coating 15 of the bag body 41 according to the bonding method according to the invention.
  • the density of the particles 7 on the first plastic ribbon fabric 3 of the second cover sheet 46 can be selected to be lower than the density of the particles 7 on the first plastic ribbon fabric 3 of the first cover sheet 45, so that the second cover sheet 46 can be removed from the bag bottom 43 to open the bag 40.
  • Unit E shows the application of a third cover sheet 44 to the bag bottom 42 and the connection of the third cover sheet 44 to the second plastic ribbon fabric 14 or its weldable coating 15 of the bag body 41 according to the connection method according to the invention.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Textile Engineering (AREA)
  • Making Paper Articles (AREA)

Abstract

L'invention concerne un procédé permettant de relier des pièces composées de textile tissé de bande plastique qui comprend la fourniture d'un premier textile tissé de bande plastique (3) dont les bandes contiennent un premier polymère thermoplastique, des particules discrètes (7), qui contiennent un troisième polymère thermoplastique, étant fixées sur une première surface (3a) du premier textile tissé de bande plastique (3), et la fourniture d'un deuxième textile tissé de bande plastique (14) dont les bandes contiennent un deuxième polymère thermoplastique, le deuxième textile tissé de bande plastique (14) étant pourvu, sur une surface, d'un revêtement soudable (15), qui contient un quatrième polymère thermoplastique. Les particules discrètes (7) et le revêtement soudable (15) sont chauffés au-dessus du point de ramollissement du troisième et du quatrième polymère thermoplastique. Les particules discrètes (7) sont mises en contact avec le revêtement soudable (15), et les premier et deuxième textiles tissés de bande plastique (3, 14) sont ensuite pressés l'un contre l'autre, en conséquence de quoi les particules discrètes (7) du premier textile tissé de bande plastique (3) et le revêtement soudable (15) du deuxième textile tissé de bande plastique (14) sont liés l'un à l'autre.
PCT/EP2024/086795 2024-01-08 2024-12-17 Procédé et dispositif permettant de relier ds pièces composées de textile tissé de bande plastique, sacs fabriqués à partir de celles-ci, dispositifs de fabrication et de fermeture de sacs, et ensembles constitués de pièces composées de textile tissé de bande plastique, et dispositifs de liaison Pending WO2025149319A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP24150630.2 2024-01-08
EP24150630 2024-01-08

Publications (1)

Publication Number Publication Date
WO2025149319A1 true WO2025149319A1 (fr) 2025-07-17

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Application Number Title Priority Date Filing Date
PCT/EP2024/086795 Pending WO2025149319A1 (fr) 2024-01-08 2024-12-17 Procédé et dispositif permettant de relier ds pièces composées de textile tissé de bande plastique, sacs fabriqués à partir de celles-ci, dispositifs de fabrication et de fermeture de sacs, et ensembles constitués de pièces composées de textile tissé de bande plastique, et dispositifs de liaison

Country Status (1)

Country Link
WO (1) WO2025149319A1 (fr)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4190010A (en) 1977-03-18 1980-02-26 Noel Bibby Limited Waterproof inwardly facing garment seams produced by high frequency welding
DE4240285A1 (en) 1991-12-17 1993-06-24 Sito Metall Und Kunststoffvera Surfacing foam with e.g. scourer layer - by coating moving substrate with fused resin powder from heated roller and bonding prod. to web of surfacing material with pressure roller
EP0758992B1 (fr) 1994-05-04 1997-10-29 STARLINGER & CO. GESELLSCHAFT MBH Sac en tissu de polymere, notamment de polyolefine, et son procede de fabrication
US5885679A (en) 1994-11-18 1999-03-23 Asahi Kasei Kogyo Kabushiki Kaisha Joining structure for waterproof fabric
US20190032286A1 (en) 2017-05-15 2019-01-31 Cocreation Grass Co., Ltd Completely recyclable artificial turf and preparation method thereof
EP3463805B1 (fr) 2016-05-26 2021-12-22 Flexinnova Kft Matériaux souples antidérapants et procédés pour leur fabrication et leur utilisation

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4190010A (en) 1977-03-18 1980-02-26 Noel Bibby Limited Waterproof inwardly facing garment seams produced by high frequency welding
DE4240285A1 (en) 1991-12-17 1993-06-24 Sito Metall Und Kunststoffvera Surfacing foam with e.g. scourer layer - by coating moving substrate with fused resin powder from heated roller and bonding prod. to web of surfacing material with pressure roller
EP0758992B1 (fr) 1994-05-04 1997-10-29 STARLINGER & CO. GESELLSCHAFT MBH Sac en tissu de polymere, notamment de polyolefine, et son procede de fabrication
US5885679A (en) 1994-11-18 1999-03-23 Asahi Kasei Kogyo Kabushiki Kaisha Joining structure for waterproof fabric
EP3463805B1 (fr) 2016-05-26 2021-12-22 Flexinnova Kft Matériaux souples antidérapants et procédés pour leur fabrication et leur utilisation
US20190032286A1 (en) 2017-05-15 2019-01-31 Cocreation Grass Co., Ltd Completely recyclable artificial turf and preparation method thereof

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