EP2365928A1 - Système et procédé de thermosoudage configurationnel de sacs plastiques - Google Patents

Système et procédé de thermosoudage configurationnel de sacs plastiques

Info

Publication number
EP2365928A1
EP2365928A1 EP09825843A EP09825843A EP2365928A1 EP 2365928 A1 EP2365928 A1 EP 2365928A1 EP 09825843 A EP09825843 A EP 09825843A EP 09825843 A EP09825843 A EP 09825843A EP 2365928 A1 EP2365928 A1 EP 2365928A1
Authority
EP
European Patent Office
Prior art keywords
molding member
pressing
fingers
layered plastic
plastic
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.)
Withdrawn
Application number
EP09825843A
Other languages
German (de)
English (en)
Inventor
Boaz Kristal
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.)
Lcs Tech Ltd
Original Assignee
Lcs Tech Ltd
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 Lcs Tech Ltd filed Critical Lcs Tech Ltd
Publication of EP2365928A1 publication Critical patent/EP2365928A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31F—MECHANICAL WORKING OR DEFORMATION OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31F1/00—Mechanical deformation without removing material, e.g. in combination with laminating
    • B31F1/07—Embossing, i.e. producing impressions formed by locally deep-drawing, e.g. using rolls provided with complementary profiles
    • 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
    • B29C59/00—Surface shaping of articles, e.g. embossing; Apparatus therefor
    • B29C59/02—Surface shaping of articles, e.g. embossing; Apparatus therefor by mechanical means, e.g. pressing
    • 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
    • B29C65/14—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using wave energy, i.e. electromagnetic radiation, or particle radiation
    • 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
    • B29C65/14—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using wave energy, i.e. electromagnetic radiation, or particle radiation
    • B29C65/1429—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using wave energy, i.e. electromagnetic radiation, or particle radiation characterised by the way of heating the interface
    • B29C65/1464—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using wave energy, i.e. electromagnetic radiation, or particle radiation characterised by the way of heating the interface making use of several radiators
    • B29C65/1467—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using wave energy, i.e. electromagnetic radiation, or particle radiation characterised by the way of heating the interface making use of several radiators at the same time, i.e. simultaneous 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
    • 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
    • B29C65/14—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using wave energy, i.e. electromagnetic radiation, or particle radiation
    • B29C65/1496—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using wave energy, i.e. electromagnetic radiation, or particle radiation making use of masks
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/18—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated tools
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/18—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated tools
    • B29C65/24—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated tools characterised by the means for heating the tool
    • B29C65/30—Electrical means
    • B29C65/305—Electrical means involving the use of cartridge heaters
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/11—Joint cross-sections comprising a single joint-segment, i.e. one of the parts to be joined comprising a single joint-segment in the joint cross-section
    • B29C66/112—Single lapped joints
    • B29C66/1122—Single lap to lap joints, i.e. overlap joints
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/20—Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines
    • B29C66/21—Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines said joint lines being formed by a single dot or dash or by several dots or dashes, i.e. spot joining or spot welding
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/20—Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines
    • B29C66/22—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
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/20—Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines
    • B29C66/23—Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines said joint lines being multiple and parallel or being in the form of tessellations
    • B29C66/232—Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines said joint lines being multiple and parallel or being in the form of tessellations said joint lines being multiple and parallel, i.e. the joint being formed by several parallel joint lines
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—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
    • B29C66/24—Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines said joint lines being closed or non-straight
    • B29C66/242—Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines said joint lines being closed or non-straight said joint lines being closed, i.e. forming closed contours
    • 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
    • B29C66/24—Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines said joint lines being closed or non-straight
    • B29C66/242—Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines said joint lines being closed or non-straight said joint lines being closed, i.e. forming closed contours
    • B29C66/2424—Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines said joint lines being closed or non-straight said joint lines being closed, i.e. forming closed contours being a closed polygonal chain
    • B29C66/24243—Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines said joint lines being closed or non-straight said joint lines being closed, i.e. forming closed contours being a closed polygonal chain forming a quadrilateral
    • B29C66/24244—Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines said joint lines being closed or non-straight said joint lines being closed, i.e. forming closed contours being a closed polygonal chain forming a quadrilateral forming a rectangle
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—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
    • B29C66/24—Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines said joint lines being closed or non-straight
    • B29C66/244—Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines said joint lines being closed or non-straight said joint lines being non-straight, e.g. forming non-closed contours
    • 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
    • B29C66/305—Decorative or coloured 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
    • B29C66/306—Applying a mark during joining
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/306—Applying a mark during joining
    • B29C66/3062—Applying a mark during joining in the form of letters or numbers
    • B29C66/30621—Applying a mark during joining in the form of letters or numbers in the form of letters
    • 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
    • B29C66/306—Applying a mark during joining
    • B29C66/3062—Applying a mark during joining in the form of letters or numbers
    • B29C66/30623—Applying a mark during joining in the form of letters or numbers in the form of numbers
    • 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
    • B29C66/432—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
    • B29C66/70—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
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/81—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps
    • B29C66/814—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps
    • B29C66/8141—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined
    • B29C66/81411—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined characterised by its cross-section, e.g. transversal or longitudinal, being non-flat
    • B29C66/81415—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined characterised by its cross-section, e.g. transversal or longitudinal, being non-flat being bevelled
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/81—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps
    • B29C66/814—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps
    • B29C66/8141—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined
    • B29C66/81411—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined characterised by its cross-section, e.g. transversal or longitudinal, being non-flat
    • B29C66/81415—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined characterised by its cross-section, e.g. transversal or longitudinal, being non-flat being bevelled
    • B29C66/81417—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined characterised by its cross-section, e.g. transversal or longitudinal, being non-flat being bevelled being V-shaped
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/81—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps
    • B29C66/814—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps
    • B29C66/8141—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined
    • B29C66/81427—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined comprising a single ridge, e.g. for making a weakening line; comprising a single tooth
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/81—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps
    • B29C66/814—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps
    • B29C66/8141—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined
    • B29C66/81431—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined comprising a single cavity, e.g. a groove
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/81—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps
    • B29C66/814—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps
    • B29C66/8145—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 constructional aspects of the pressing elements, e.g. of the welding jaws or clamps
    • B29C66/81457—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 constructional aspects of the pressing elements, e.g. of the welding jaws or clamps comprising a block or layer of deformable material, e.g. sponge, foam, rubber
    • 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
    • B29C66/832—Reciprocating joining or pressing tools
    • B29C66/8322—Joining or pressing tools reciprocating along one axis
    • B29C66/83221—Joining or pressing tools reciprocating along one axis cooperating reciprocating tools, each tool reciprocating along one axis
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D75/00—Packages comprising articles or materials partially or wholly enclosed in strips, sheets, blanks, tubes, or webs of flexible sheet material, e.g. in folded wrappers
    • B65D75/28—Articles or materials wholly enclosed in composite wrappers, i.e. wrappers formed by associating or interconnecting two or more sheets or blanks
    • B65D75/30—Articles or materials enclosed between two opposed sheets or blanks having their margins united, e.g. by pressure-sensitive adhesive, crimping, heat-sealing, or 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
    • B29C35/00—Heating, cooling or curing, e.g. crosslinking or vulcanising; Apparatus therefor
    • B29C35/02—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould
    • B29C35/08—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation
    • B29C35/0805—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation using electromagnetic radiation
    • B29C2035/0822—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation using electromagnetic radiation using IR radiation
    • 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
    • B29C65/04—Dielectric heating, e.g. high-frequency welding, i.e. radio frequency welding of plastic materials having dielectric properties, e.g. PVC
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/08—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using ultrasonic vibrations
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/10—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
    • 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
    • B29C65/14—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using wave energy, i.e. electromagnetic radiation, or particle radiation
    • B29C65/1403—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using wave energy, i.e. electromagnetic radiation, or particle radiation characterised by the type of electromagnetic or particle radiation
    • B29C65/1412—Infrared [IR] radiation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/18—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated tools
    • B29C65/22—Heated wire resistive ribbon, resistive band or resistive strip
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/18—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated tools
    • B29C65/22—Heated wire resistive ribbon, resistive band or resistive strip
    • B29C65/221—Heated wire resistive ribbon, resistive band or resistive strip characterised by the type of heated wire, resistive ribbon, band or strip
    • B29C65/222—Heated wire resistive ribbon, resistive band or resistive strip characterised by the type of heated wire, resistive ribbon, band or strip comprising at least a single heated wire
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/18—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated tools
    • B29C65/22—Heated wire resistive ribbon, resistive band or resistive strip
    • B29C65/221—Heated wire resistive ribbon, resistive band or resistive strip characterised by the type of heated wire, resistive ribbon, band or strip
    • B29C65/224—Heated wire resistive ribbon, resistive band or resistive strip characterised by the type of heated wire, resistive ribbon, band or strip being a resistive ribbon, a resistive band or a resistive strip
    • 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
    • B29C65/38—Impulse heating
    • 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
    • B29C65/74—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by welding and severing, or by joining and severing, the severing being performed in the area to be joined, next to the area to be joined, in the joint area or next to the joint area
    • B29C65/743—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by welding and severing, or by joining and severing, the severing being performed in the area to be joined, next to the area to be joined, in the joint area or next to the joint area using the same tool for both joining and severing, said tool being monobloc or formed by several parts mounted together and forming a monobloc
    • 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
    • B29C65/74—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by welding and severing, or by joining and severing, the severing being performed in the area to be joined, next to the area to be joined, in the joint area or next to the joint area
    • B29C65/745—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by welding and severing, or by joining and severing, the severing being performed in the area to be joined, next to the area to be joined, in the joint area or next to the joint area using a single unit having both a severing tool and a welding tool
    • B29C65/7451—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by welding and severing, or by joining and severing, the severing being performed in the area to be joined, next to the area to be joined, in the joint area or next to the joint area using a single unit having both a severing tool and a welding tool the severing tool and the welding tool being movable with respect to one-another
    • 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
    • B29C66/03—After-treatments in the joint area
    • B29C66/034—Thermal after-treatments
    • B29C66/0342—Cooling, e.g. transporting through welding and cooling zone
    • 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
    • B29C66/727—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 porous, e.g. foam
    • 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
    • B29C66/81—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
    • B29C66/812—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 composition, by the structure, by the intensive physical properties or by the optical properties of the material constituting the pressing elements, e.g. constituting the welding jaws or clamps
    • B29C66/8122—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 composition, by the structure, by the intensive physical properties or by the optical properties of the material constituting the pressing elements, e.g. constituting the welding jaws or clamps characterised by the composition of the material constituting the pressing elements, e.g. constituting the welding jaws or clamps
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/81—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps
    • B29C66/814—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps
    • B29C66/8141—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined
    • B29C66/81411—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined characterised by its cross-section, e.g. transversal or longitudinal, being non-flat
    • B29C66/81415—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined characterised by its cross-section, e.g. transversal or longitudinal, being non-flat being bevelled
    • B29C66/81419—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined characterised by its cross-section, e.g. transversal or longitudinal, being non-flat being bevelled and flat
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/81—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps
    • B29C66/816—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
    • B29C66/8167—Quick change joining tools or surfaces
    • 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
    • B29C66/818—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 cooling constructional aspects, or by the thermal or electrical insulating or conducting constructional aspects of the welding jaws or of the clamps ; comprising means for compensating for the thermal expansion of the welding jaws or of the clamps
    • B29C66/8181—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 cooling constructional aspects, or by the thermal or electrical insulating or conducting constructional aspects of the welding jaws or of the clamps ; comprising means for compensating for the thermal expansion of the welding jaws or of the clamps characterised by the cooling constructional aspects
    • 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
    • B29K2023/00—Use of polyalkenes or derivatives thereof as moulding material
    • B29K2023/04—Polymers of ethylene
    • B29K2023/06—PE, i.e. polyethylene
    • 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
    • B29K2023/00—Use of polyalkenes or derivatives thereof as moulding material
    • B29K2023/04—Polymers of ethylene
    • B29K2023/06—PE, i.e. polyethylene
    • B29K2023/0608—PE, i.e. polyethylene characterised by its density
    • B29K2023/0625—LLDPE, i.e. linear low density polyethylene
    • 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
    • B29K2023/00—Use of polyalkenes or derivatives thereof as moulding material
    • B29K2023/04—Polymers of ethylene
    • B29K2023/06—PE, i.e. polyethylene
    • B29K2023/0608—PE, i.e. polyethylene characterised by its density
    • B29K2023/0633—LDPE, i.e. low density polyethylene
    • 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
    • B29K2023/00—Use of polyalkenes or derivatives thereof as moulding material
    • B29K2023/04—Polymers of ethylene
    • B29K2023/06—PE, i.e. polyethylene
    • B29K2023/0608—PE, i.e. polyethylene characterised by its density
    • B29K2023/065—HDPE, i.e. high density polyethylene
    • 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
    • B29K2023/00—Use of polyalkenes or derivatives thereof as moulding material
    • B29K2023/10—Polymers of propylene
    • B29K2023/12—PP, i.e. polypropylene
    • 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
    • B29K2105/00—Condition, form or state of moulded material or of the material to be shaped
    • B29K2105/04—Condition, form or state of moulded material or of the material to be shaped cellular or porous
    • 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
    • B29K2223/04—Polymers of ethylene
    • B29K2223/06—PE, i.e. polyethylene
    • B29K2223/0608—PE, i.e. polyethylene characterised by its density
    • B29K2223/065—HDPE, i.e. high density polyethylene
    • 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
    • B29K2883/00—Use of polymers having silicon, with or without sulfur, nitrogen, oxygen, or carbon only, in the main chain, as mould 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
    • B29K2905/00—Use of metals, their alloys or their compounds, as mould material
    • B29K2905/08—Transition metals
    • B29K2905/12—Iron
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2995/00—Properties of moulding materials, reinforcements, fillers, preformed parts or moulds
    • B29K2995/0018—Properties of moulding materials, reinforcements, fillers, preformed parts or moulds having particular optical properties, e.g. fluorescent or phosphorescent
    • B29K2995/002—Coloured
    • 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
    • B29L2009/00—Layered products
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31F—MECHANICAL WORKING OR DEFORMATION OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31F2201/00—Mechanical deformation of paper or cardboard without removing material
    • B31F2201/07—Embossing
    • B31F2201/0707—Embossing by tools working continuously
    • B31F2201/0754—The tools being other than rollers, e.g. belts or plates
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31F—MECHANICAL WORKING OR DEFORMATION OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31F2201/00—Mechanical deformation of paper or cardboard without removing material
    • B31F2201/07—Embossing
    • B31F2201/0784—Auxiliary operations
    • B31F2201/0789—Joining plies without adhesive
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D2401/00—Tamper-indicating means

Definitions

  • the present invention relates in general to plastic bags and in particular to configurationally heat soldering plastic sheets and manufacturing of packing bags and tamper evident envelopes.
  • Tamper evident envelopes made of plastic resins such as polyethylene are common in the marketplace. Normally the open edges of one folded foil, or two sheets of plastic foil laid one on top of the other are mutually attached by thermal soldering. A continuous line is typically printed along the seams providing for tamper evidence. Normally soldering is applied by contact heating and concomitantly pressing the two layers of plastic one against the other. Reference is now made to Figs 1 - 5 in which cross sectional views of a number of common soldering stations are respectively shown. Such stations provide for heat soldering the edges of the envelopes.
  • a soldering station especially suited for soldering soft plastic layers, such as thin sheets made of polyethylene, as well as sheets of plastic foam is presented in Fig. 1.
  • Electrically heated wire 10 activated by short pulses of electrical current heats two layers of plastic to be mutually attached when soldering heads 12 are pressed against each other while trapping the layered plastic sheets in between them.
  • the heat capacity of soldering heads 12, which is relatively high provides for cooling off the seam by the end of each heating pulse.
  • the time required for heating up to a temperature suitable for soldering along each and every heating pulse provides for a relatively low soldering rate which is only of a few soldering cycles per minute.
  • soldering station 14 that is shown In Fig. 2.
  • Soldering heads 16 are heated to the suitable temperature by a constant electric current conducted through embedded electrical heaters 18.
  • the sheets to be mutually attached are simultaneously moved laterally to the soldering heads along a track passing through station 14, not shown.
  • similar heads through which coolant streams, are pressed against the relatively wide seams to cool them off.
  • the mutually attached sheets are further cut off along a line disposed within the region of a seam such that individual bags are separated in the following station.
  • Such method is especially suited to laminated sheets having an inner layer, which is practically melted by such heating.
  • soldering station shown in Fig. 3.
  • Soldering heads 20 retained at a suitable temperature by means of heating elements 21 are simultaneously pressed for a predefined period of time against the two layers of thin plastic sheets whilst being supported by base 22. Both layers are simultaneously cut by means of blade 24. The seams cool off by means of radiation and heat conduction to the ambient atmosphere.
  • Another method especially suited for soldering soft and thin plastic sheets is demonstrated by the soldering station shown in Fig. 4. Cutting and soldering is applied by repeatedly pressing layers 28 while being sandwiched between soldering head 30 and cylinder 32.
  • Soldering head 30 has tipped sharpened end 31. The hot blade formed by tip 31 practically melts both layers.
  • Cylinder 32 rotates between successive soldering cycles, such that heating is applied each time when tip 31 presses against a different location across the surface of cylinder 32.
  • the seams are contact cooled by cylinder 32 when the soldering head is pulled off.
  • This method is commonly applied in manufacturing thin bags.
  • Such soldering station provides for production rates of a few hundred soldering cycles per minute. However it is not suitable for manufacturing bags made of relatively thick sheets, plastic foam or bubbled sheets.
  • Another method providing a relatively high rate of soldering cycles is demonstrated by the soldering station shown in Fig. 5. Both plastic sheets 38 are simultaneously pressed between pressing arm 40 and soldering head 42, such that layers 38 are forced by sharpened tip 44 against heating element 46. At this point a heating pulse is applied.
  • the sharpened tip provides for cutting both sheets concomitantly with forming of the seams at both edges of the cut.
  • Linear seams are generated according to common soldering methods such as described above. Linear continuous seams that characterize common tamper evident envelopes are vulnerable to breaching. A common sealed tamper evident envelope can be opened by cutting an edge and further resealing it by heat soldering, such that the additional seam will be hardly detected.
  • distinctive patterns imprinted along seams that are heat soldered along the edges of tamper evident envelopes and/or packages that are made from plastic may provide for enhanced immunity against such breaching. Therefore tamper evident envelopes and packaging that are made of plastic sheets and have configurationally heat soldered seams are beneficial.
  • Figs 1 - 5 schematically present soldering stations in accordance with various known methods for heat soldering of plastic bags
  • Fig. 6A is an isometric view of two members of a soldering head providing for configurationally heat soldering layered plastic sheets according to an embodiment of the present invention
  • Fig. 6B is a sectional view of the heating member shown in Fig. 6A
  • Fig. 6C is a sectional view of the pressing member shown in Fig. 6A;
  • Fig. 7A is a side view of a soldering head according to a preferred embodiment of the present invention.
  • Fig. 7B is an isometric view of the soldering head shown in Fig. 7A;
  • Figs 8A - 8B schematically present segments of a soldering head providing for embossing a three dimensional pattern along a seam of a tamper evident envelope according to a preferred embodiment of the present invention;
  • Fig. 9A is an isometric view of a segment of an embossing head that can be used for manufacturing a tamper evident envelope according to another preferred embodiment of the present invention;
  • Fig. 9B schematically presents another segment of the embossing head shown in Fig. 9A;
  • Figs 1OA - 10C are side looking views of three tamper evident envelopes in accordance with three different preferred embodiments of the present invention.
  • Figs 10D-10E are side looking views of the same segment of a temper evident envelope according to another preferred embodiment of the present invention.
  • Fig. 11 is a side looking view of a tamper evident envelope according to another preferred embodiment of the present invention.
  • Figs 12A is a side looking view of a temper evident envelop according to an embodiment of the present invention.
  • Fig. 12B is a sectional view of the envelope shown in Fig. 12A, along the line AA;
  • Fig. 13 is a side looking view of a molding member of a soldering head according to an embodiment of the present invention.
  • plastic bags and/or envelopes manufactured by employing configurationally heat soldering according to the method of the present invention have at least a segment of a seam in which one layer and a second layer of one or two plastic sheets are configurationally heat soldered to each other.
  • Each such soldered seam has a distinctive pattern embossed on, and/or perforated through, one or both layers across a significant part of the seam.
  • the imprinted pattern is corrupted. Therefore an unauthorized opening of such seam becomes apparent to a user of the bag.
  • soldering heads of the first kind are especially suitable for soldering soft plastic sheets such as bubble sheets or plastic foam. However such soldering heads successfully cope with heat soldering materials such as Tyvek (R) .
  • Soldering heads of the second kind provide for embossing any two and/or three- dimensional patterns along the seam of a plastic bag of the invention.
  • the soldering heads described below provide for applying three-dimensional embossed patterns onto various types of plastic sheets as further described infra.
  • Soldering heads of the second kind are also referred hereinafter as embossing heads.
  • a soldering head providing for configurationally heat soldering normally comprises a molding member and a heating member.
  • Soldering heads of the first kind optionally further include a pressing member.
  • the heating members provide for heating the layered plastic at predefined heating rates such that their respective surfaces fuse to be mutually heat soldered when the layers are pressed against each other.
  • the molding members provide for pressing against the heated plastic layers concomitantly with imprinting and/or perforating a pattern across the seam.
  • the pressing members provide for further compressing the layered plastic sheets and condensing them such that their width is decreased down to a desired level as well as for dissipating the excessive heat conducted through the layered plastic to the margins of the contours imprinted across the seam. Wherever inward direction is referred to hereinbelow, it means the direction pointing from the edge towards the center of the layered plastic sheets.
  • FIG. 6A a segment of an assembly scheme of a soldering head is shown.
  • Molding member 50 consists of body 51 from which two rows having a plurality of fingers 52 separated by elongated prism 54 extend from one face of body 51 towards a common direction.
  • Electric heater 56 is embedded in an elongated cavity coaxially disposed within body 51.
  • Molding member 50 provides for contact heating a surface when the faces of its fingers and prism are pressed against it. Molding member 50 serves also as the heating member of the soldering head considered as well.
  • the pressing faces of fingers 52 may have any geometrical shape, such as pointed, circular, oval, curvilinear, or polygonal such that their footprints across the heated plastic layer have a distinct pattern. Similarly, fingers their pressing faces are shaped as alphanumeric characters, symbols, or graphical patterns are in accordance with the present invention.
  • curvilinear elongated bulges or a series of evenly spaced fingers aligned along a linear or curvilinear line may substitute prism 54.
  • Such series of bulges or fingers are also referred hereinafter as a prism.
  • the rows of fingers need not be linear, but can be according to the present invention curved or wiggled at different curvature angles.
  • One or more rows can be disposed according to the present invention at both sides of prism 54.
  • one or more prisms with or without being interleaved with rows of fingers extend off one side of body 51.
  • Pressing member 58 consists of a flat body having arrays of apertures 60 conformal with the fingers and prisms of molding member 50. All these apertures are skirted with sharpened bulges protruding towards the same direction. Such sharpened bulges provide for enhancing the pressure exerted onto the layered plastic applied to the margins of the contours to be heated by means of the fingers and prisms of molding member 50.
  • the layered plastic is sandwiched between the fingers and prisms of the molding members as well as the bulges that skirt the apertures of the pressing member and a supporting surface, not shown.
  • a relatively soft surface such as made of silicon or silicon rubber supports the opposite side of the layered plastic.
  • the supporting surface is made of a rigid material such that a distinct pattern is imprinted onto the sandwiched plastic.
  • Figs 6B and 6C sectional views of member 50 and 58 shown in Fig. 6A are respectively shown. The same parts shown in all of these three figures are indicated by the same numerals. Sharpened tip 63 of prism 54 provides for cutting a sheet or layered sheets of plastic when heated and forced towards the topmost layer.
  • the pressing member is forced against the layers to be configurationally heat soldered at a predefined force that is selected in accordance with the widths and the materials from which the plastic sheets are made of.
  • the level by which the pressing member presses the layered sheets as well as the time along which pressing is applied are crucial to the quality and distinctness of the patterns to be imprinted across a seam.
  • Biasing springs not shown, optionally connect pressing member 58 to molding member 50. Therefore when the molding member is moved towards the layered plastic pressing member 58 first presses the sandwiched plastic before heated fingers 52 touches its surface.
  • Such enhanced pressing at the margins of the contours targeted for heating provides for retaining the tension applied onto the segment of the heated plastic at a constant level and condensing the layered plastic such that the width of the sandwiched plastic reduces to a desired level. Similarly when molding member is moved away from the layered plastic the pressing member continues to press it for better cooling the generated seems and avoiding shrinkage of the cooling segments.
  • the footprints of the fingers and/or the prisms of a molding member are referred hereinafter as features of the pattern.
  • These features include and are not limited to according to the present invention graphical and typographical symbols and/or continuous and/or discontinuous, dashed or dotted lines, which are linear and/or curvilinear.
  • the features are embossed on, and/or perforated through, the layered plastic.
  • the patterns imprinted along a seam by means of the soldering heads described above are characterized by more than one continuous tier of soldered segments, each of which is successively aligned in a direction pointing inwards off the edge of the bag. Therefore even an insertion of a thin object such as a fiber-optic is involved with cutting through more than one such segment of a soldered line.
  • Figs 7A and 7B a side and isometric views of a molding member of a soldering head of the first kind according to a preferred embodiment of the present invention are respectively shown.
  • This soldering head that is shaped as a horseshoe, consists of molding member 70 and a matching pressing member, not shown, which is provided with series of skirted apertures as described above.
  • This pressing member is connected by biasing springs to molding member 70, such that when this soldering head is moved towards the layered plastic, the bulges skirting the apertures of the pressing member first press against the layered plastic, a while later the pressing faces of the fingers touch the surface of the plastic.
  • An inner curved prism consisting of curved row of fingers 72 is inwardly disposed to continuous and curved prism 74.
  • a soldering head in which any of these prisms is avoided is in accordance with the present invention.
  • Another row of fingers the faces of which are shaped as alphanumerical symbols, provide for printing in the space between the footprint s of both prisms.
  • the widths of the faces of fingers 72, as well as the width of prism 74 are significantly smaller compared to the distance between any of the fingers 72 to prism 74.
  • the footprints of both prisms provide for retaining the segment of the layered plastic sheets in between them stretched. Such stretching can be also retained in cases in which the pressing member is avoided. Therefore any twisting and/or shrinking of this segment as a result of its being selectively and discontinuously heated and then cooled are significantly decreased.
  • heat printing is further applied on top of the soldered figures by means of a foil coated with heat-transferred color disposed between the bottom faces of these fingers and the surface to be pressed and further heated.
  • Some of the fingers according to the present invention can be slightly longer than the other fingers and can have sharpened tips at their free ends, such that the soldered layers of plastic are perforated when are pressed by the molding member. Any such perforation is skirted with a thin circular seam due to the contact with the heated finger.
  • Such heat printing and or perforation provide for enhancing the distinctness of a seam.
  • FIG. 8A embossing head 80 is shown.
  • Embossing head 80 has two molding members 82 and 84. Fingers their pressing faces are shaped like alphanumeric symbols, such as finger 85, extend towards the same direction from face 81. Recesses, not shown, all of which respectively conform to the fingers are disposed on the respective face of female molding member 84.
  • prisms and conformal grooves with or without fingers are disposed on the respective faces of molding members 82 and 84 respectively.
  • the surface of a finger and the surface of the respective recess enclose a space that surrounds each finger into which the material of a segment of the heated layers of plastic is stretched and forced.
  • the space existing between the fingers and the wall of the conformal recesses provides for structuring a three-dimensional geometrical shape that is filled with the material of the layered plastic.
  • Embedded heaters and temperature control devices not shown, provide for retaining the respective temperature of any of both molding members fixed, as known.
  • the temperature of the hot member which is preferably molding member 82, is retained fixed within a predefined temperature interval below the melting point of the plastic resins utilized.
  • the heating member of this soldering head comprises both molding members 82 and 84.
  • the respective edge of the bag such as tamper evident envelope 87, is moved along the direction of arrow 88 and placed between the jaws of soldering head 80.
  • both molding members 82 and 84 are respectively forced to move in the direction of arrows 89 and press against the respective surfaces of the bag by a predefined force along a predefined time interval.
  • a segment of embossing head 90 in accordance with another preferred embodiment of a tamper evident envelope of the present invention is schematically shown.
  • Curved fingers such as finger 91 or slim and sharpened fingers such as finger 92 protrude off the face of mail molding member 93.
  • Matching recesses such as recess 94 and 95 are respectively located at the face of female molding member 96.
  • the slim and sharpened fingers provide for perforating a pattern through the soldered plastic sheets.
  • the continuously curved fingers provide for embossing typographical features across the layered plastic sheets concomitantly with mutually soldering them.
  • the temperature of a male molding member is higher than the temperature of the female molding member by a predefined temperature difference, such that the direction in which heat is conducted through the layered plastic complies with the direction of the movement of the plastic layers into the respective recesses of the female molding member.
  • the temperature gradient generated across the widths of the layered plastic sheets that structure features of the embossed pattern provide for fine tuning the quantity of heat to be absorbed by the layered plastic and avoiding excessive heating.
  • the duration of the heating as well as the temperature difference provide for controlling the quantity of heat to be absorbed by the layered plastic.
  • a molding member of an embossing head of the invention may have a number of protruding fingers as well as another number of recesses that conform to fingers extending off the other molding member. Namely, seams in which a segment of an embossed pattern protrudes off one face of the layered plastic and the successive segment of the pattern protrudes off the opposite face of the layered plastic can be heat soldered by such soldering heads. In such a case both molding members are heated to the same temperature.
  • Soldering of the layered plastic and the associated embossing process are concomitantly effected with heating the layered plastic by means of the soldering head described above.
  • Heating member 100 has one or more heaters such as heaters 102 disposed in front of mask 104.
  • Mask 104 has one or more apertures such as slot 106, which are cut through diaphragm 108. The layout and geometrical shape of these apertures conform to the contours of the seams to be imprinted on the surface of the plastic bag.
  • the layered plastic is exposed to the heat radiation for a predefined time interval.
  • heating can be applied by ultrasound irradiation, high frequency or radio frequency (RF) irradiation, or any combination of infrared and ultrasound irradiation.
  • RF radio frequency
  • heating can be applied by jetting heated air at predefined quantities towards the layered plastic. Following any such heating cycle the heated layered plastic is upheld still in place such that no harm involved with moving it might occur.
  • a segment of embossing head 110 is schematically shown at an open position following the soldering of the edges of envelope 112.
  • Shaped fingers such as fingers 114 extend from molding member 116 towards envelope 112 and recesses conformal to the fingers, not shown, are disposed on the side of member 118 facing the envelope, as described hereinabove.
  • Pipes 120 respectively embedded in both molding members provide for conducting coolants thereby controlling the respective temperatures of the molding members at respective desired values. In such manner the soldering of the layered plastic that results the embossed pattern is accomplished whilst the heated plastic cools off.
  • the pattern embossed along the seam of envelope 112 includes distinct shaped bulges, such as bulges 122, conformal with the geometrical shape of the fingers of the male molding member. Recesses having similar distinct shapes are respectively disposed on the opposite face of the envelope.
  • any sheet or sheets of thermoplastic resins normally utilized in manufacturing common plastic bags can be utilized.
  • the plastic sheets are first layered; then segments across the surface of the layered plastic are heated to a respective predefined temperature, which is below and close to the respective melting point of the plastic considered; the heated segments are pressed by a soldering head such as described hereinabove, and then cooled again to the ambient temperature.
  • Heating and pressing can be either successively or concomitantly effected. In cases in which heating and pressing are concomitantly effected, heating is accomplished either by contact with a body the temperature of which is regulated to equal the desired temperature or by a heat pulse such as electrically generated and further conducted through the fingers and prisms of the molding member during the time interval along which the layered plastic is pressed.
  • the width in time of a heat pulse is predefined.
  • the width in time of a heat pulse is selected in consideration with the heat capacity of the segment of the layered plastic and the heat capacity of the molding member the length in time separating between two successive heating pulses which depends on the rate of soldering and the ambient temperature.
  • heating by infrared irradiation is effected along a predefined time interval along which the respective desired temperature of the targeted segments of the layered plastic is achieved to avoid full melting of the sheet at the heated zones.
  • the layered sheets are further pressed by means of a pressing member forced at predefined level of forces prior to, and during, the time interval in which the heating member of a soldering head of the first kind presses them.
  • a foil coated with a heat-transferred color is sandwiched between some rows of fingers and the topmost surface of the layered plastic facing them.
  • the layered sheets to be mutually attached according to the invention are sandwiched between the jaws of an embossing head or between a soldering head of the first kind and a supporting surface.
  • the soldering head of the first kind presses the sandwiched layers of plastic against a cylinder, which is rotated along time intervals separating in between two successive soldering cycles.
  • Cutting along the edges of the bags can be accomplished according to the invention either by means of a sharpened prism of a heating member of a soldering head concomitantly with soldering the edges of the bags, or independently by means of a cutting knife, as known.
  • Configurationally heat soldering plastic packaging of the present invention can be implemented in an automatic production line in which one folded, two (or more), elongated sheets of plastic are winded off two feeding drums and are stretched linearly between the jaws of an embossing head or between soldering head of the first kind and a planar or a cylindrical supporting surface.
  • Tamper evident envelope 140 is made of two sheets of co-extruded polyethylene (HDPE+LDPE). These sheets are attached to each other by two continuous soldered seams 142. Seams 142 are generated by means of soldering head of the first kind having an inner and outer prism extending outwards off the body of its heating member. The wiggles in-between seams 142 are generated by curved elongated fingers disposed between these prisms. Optionally the seams and/or wiggles disposed between them are further colored by heat printing as described above. Perforated tear tape 144 provides for printing data related to the content of tamper evident envelope 140. Tamper evident sealing sticker 145 has to be first removed or cut for opening the envelope and get access to its content, as known.
  • HDPE+LDPE co-extruded polyethylene
  • Tamper evident envelope 150 is made of bubbled sheet that is made of co-extruded polyethylene by means of a soldering head of the first kind. This soldering head is incorporated with a pressing unit such that the bubbles in the seam area are squeezed to give a good thermal contact between the various layers of plastic within the contour of the seam.
  • Two continuous soldered seams 152 surround an embossed printed data 154 presented by means of imprinted alphanumerical characters. The continuous lines and the alphanumeric symbols are respectively generated with curvilinear prisms and shaped fingers of the heating member.
  • Temper evident sticker 156 provides for sealing off the aperture of the envelope as known.
  • the molding member employed is such structured that the outermost prisms are curved to include flap 158 as an integral part of the body of the envelope. Flap 158 provides for conveniently filling. Punched apertures 159 provide for filing envelope 150 such as within a dossier, can be either punched concomitantly with the config u rational soldering or at a later stage by means of a common punch..
  • Wiggly and curvy seem such as seems 160 of temper evident envelope 162 with or without additional imprinted symbols and/or data in between is another exemplary tamper evident envelope of the present invention.
  • Envelopes having a single nonlinear and wiggly seam along their edges are in accordance with the present invention.
  • Envelopes of the present invention may have one face made of plastic sheet whereas the other face is made of a nonwoven fabric. Such envelopes are especially suitable for carrying paper money. In a soldering process the heated plastic sheet fuses and some of it further gets into the spaces separating among various fibers of the nonwoven fabric onto which it is pressed while being heat soldered.
  • Figs 10D-10E in which two opposing sides of a segment of tamper evident envelope 164 are respectively shown.
  • Face 165 of envelope 164 is made of polyethylene.
  • face 166 is made of a nonwoven fabric such as Taft or Rayon. The seams along the edges shown in both figures include two continuous lines 168.
  • a three dimensional pattern including alphanumerical characters is embossed in between lines 168. Such configurational heat soldering is accomplished by means of embossing heads such as described hereinabove.
  • Sheets of nonwoven fabric that is utilized for manufacturing envelopes of the invention in which one of their faces is made of plastic resin whereas the other face of the envelope is made of nonwoven fabric are also referred herein after as plastic sheets
  • the inventor of the present invention has experimentally found that when a continuous region of a few millimeters square across layered Tyvek (R) sheets is heated such that the material within the heated region fuses and further cooled off for the purpose of heat soldering, the inner material within the soldered regions becomes transparent and brittle. Although a relatively thin soldered seam circumferential to the heated zone does exist, the inner region can be easily crumpled. However the integrity of a discontinuous soldered seam across Tyvek (R) sheets, the area of the individual segments of which is within a range of 1.5 - 2 millimeters square, remains intact.
  • a seam consisting of an array of soldered segments that are spaced apart; which is shaped as dashed or doted line, retains almost the original integrity of a virgin Tyvek (R) sheet.
  • the minimal dimensions of the spaces separating between two adjacent soldered segments are such that the material within a space does not change its color in comparison with the color of a virgin Tyvek (R) sheet.
  • the maximal width of a soldered region as well as the minimal width separating between two adjacent soldered segments can be experimentally found according to the invention by trial.
  • the area of a soldered segment should not exceed say 1.5 - 2 mm 2 (one and a half up to two millimeter square), whereas the width of the spacing between two adjacent soldered segments may get down to half of the width of the soldered zone.
  • the margin of the heated regions are further pressed by means of a pressing member concomitantly while are heated and further cooled off. In this manner an array of soldered segments is generated across the surface of the layered Tyvek (R) sheets.
  • Envelope 170 is made of tyvek (R) .
  • the edges of envelope 170 are soldered by means of a soldering head of the first kind.
  • a company name and/or logo or any text or graphical pattern is embossed across the spacing between both seams 172.
  • the spacing between adjacent soldered points as well as the multiple tiers of soldered points do not allow for introducing for example a fiber optic to search the content of the envelope.
  • tamper evident envelopes The manufacturing time of tamper evident envelopes depends on the number of open edges per one envelope along which seams have to be heat soldered.
  • a folded plastic sheet By utilizing a folded plastic sheet one can fabricate envelopes having two open sides that have to be sealed by heat soldering. Whereas the third open side can be used as the aperture of the envelope that can be sealed off by the user by means of a tamper evident sticker as known.
  • Figs 12A - 12B In Fig. 12A side looking view of tamper evident envelope 180 is shown.
  • Two seams 182 each of which includes a three dimensional embossed logo disposed in between two continuous lines such as the seam shown in Figs 10D-10E.
  • Tamper evident sticker 184 seals the aperture of the envelope.
  • FIG. 12B is a sectional view along line AA of the envelope shown in Fig 12A.
  • An exemplary inexpensive soldering head of the present invention includes a male molding member such as molding member 190 a side looking view of which is shown in Fig. 13 to which reference is now made.
  • Linear prism 192 and a two dimensional array of sharpened and relatively elongated pins, such as pins 194 extend off the face of molding member 190.
  • a matching female molding member not shown, includes an elongated groove conformal to the prism and an array of recesses that respectively conform to the elongated pins.
  • the pins provide for perforating the tamper evident envelope such that a relatively thin circular seam is disposed circumferential to any of the punched holes made by any of the elongated pins 194.
  • Another soldering head according to an embodiment of the present invention has a male molding member that include only a row, or a two dimensional array, of pins extending off the face of the male molding member; all of which have the same predefined temperature.
  • a female molding member includes the respective recesses that conform to the pins.
  • Such a soldering head can be employed for producing a seam the includes an array of holes their margins are heat soldered.
  • such a soldering head can be added as an additional soldering station to a production line of tamper evident envelopes that include common soldering station providing for soldering linear seams as known.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Electromagnetism (AREA)
  • Toxicology (AREA)
  • Thermal Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Composite Materials (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)
  • Bag Frames (AREA)
  • Making Paper Articles (AREA)

Abstract

L'invention concerne un système et un procédé permettant d'imprimer des motifs distincts le long d'une soudure par laquelle deux feuilles plastiques stratifiées ou plus sont mutuellement fixées l'une à l'autre. Le procédé décrit comprend les étapes consistant à : (i) chauffer les contours sélectionnés situés à travers une surface du plastique stratifié à une température prédéfinie, et (ii) forcer une tête de moulage contre la surface chauffée, ledit élément de moulage ayant une face à partir de laquelle une pluralité de doigts s'étendent vers une direction commune, l'empreinte desquels caractérisant le motif souhaité. Une tête de soudage du système décrit comporte au moins un élément de moulage possédant une pluralité de doigts. Les empreintes des doigts sont mises en forme de façon géométrique selon le motif à imprimer le long de la soudure. Une partie des doigts peuvent inclure des pointes affûtées. Une tête de soudage comporte éventuellement un élément de pression en vue de la compression contre les périphéries des empreintes des doigts situés à travers la surface du plastique stratifié. Une tête de soudage peut également comporter un second élément de moulage qui possède des encoches qui s'emboîtent avec les doigts du premier élément de moulage. Les températures de l'un quelconque des éléments de moulage peuvent être contrôlées indépendamment. Cette tête de soudage possédant un double élément de moulage assure le gaufrage de motifs tridimensionnels distincts à travers les feuilles plastiques stratifiées soudées. En outre, l'invention concerne des enveloppes inviolables.
EP09825843A 2008-11-14 2009-11-15 Système et procédé de thermosoudage configurationnel de sacs plastiques Withdrawn EP2365928A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US19330208P 2008-11-14 2008-11-14
PCT/IL2009/001072 WO2010055516A1 (fr) 2008-11-14 2009-11-15 Système et procédé de thermosoudage configurationnel de sacs plastiques

Publications (1)

Publication Number Publication Date
EP2365928A1 true EP2365928A1 (fr) 2011-09-21

Family

ID=42169688

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09825843A Withdrawn EP2365928A1 (fr) 2008-11-14 2009-11-15 Système et procédé de thermosoudage configurationnel de sacs plastiques

Country Status (3)

Country Link
EP (1) EP2365928A1 (fr)
JP (1) JP2012508663A (fr)
WO (1) WO2010055516A1 (fr)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9271879B2 (en) 2009-03-13 2016-03-01 The Procter & Gamble Company Article having a seal and process for forming the same
US9079324B2 (en) * 2010-03-11 2015-07-14 The Procter & Gamble Company Process for making a film/nonwoven laminate
NZ588496A (en) * 2010-10-11 2010-12-24 Technopak Ltd Sealed and secure packaging methods
GB2491561A (en) * 2011-05-20 2012-12-12 L C S Tech Ltd Tamper proof seal
US20140255452A1 (en) * 2013-03-11 2014-09-11 Niconovum Usa, Inc. Method and apparatus for differentiating oral pouch products
JP6687407B2 (ja) * 2016-02-04 2020-04-22 グンゼ株式会社 クリアファイル製造装置及び当該クリアファイル製造装置を備えるクリアファイル製造システム
DE102017009889A1 (de) * 2017-10-19 2019-04-25 Superseven Gmbh Mehrlagiger Folienverbund sowie Verfahren und Vorrichtung zur Herstellung eines mehrlagigen Folienverbundes

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5727686A (en) 1995-07-31 1998-03-17 Kristal; Boaz Tamper-evident security envelopes
US6629917B2 (en) * 1999-10-19 2003-10-07 Amplas, Inc. Sealer apparatus for plastic film processing including an adjustably mounted seal bar, particularly for bag making machines
FI20002038A (fi) * 2000-09-15 2002-03-16 Nokia Mobile Phones Ltd Koristeltu ruiskupuristettu tuote ja menetelmä sen valmistamiseksi
US6786640B2 (en) * 2001-09-06 2004-09-07 Illinois Tool Works Inc. Tamper evident slider package
US20040018041A1 (en) * 2001-11-20 2004-01-29 Samuel Amdahl Plurality of binding elements for automated processes
US20050220942A1 (en) * 2004-03-15 2005-10-06 Hongyu Wu Easy to peal vacuum packaging bags
US20050274092A1 (en) * 2004-06-10 2005-12-15 Packaging Technologies, Inc. Continuous motion sealer
DE602006014199D1 (de) * 2005-11-08 2010-06-17 Abate Basilio & C S N C Spritzgiesscoform- und montageverfahren und -vorrichtung für aus kunststoffmaterial hergestellte artchritts verbindbaren teilen
US20070102389A1 (en) * 2005-11-08 2007-05-10 Seaquist Closures Foreign, Inc. Tamper-evident closure

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2010055516A1 *

Also Published As

Publication number Publication date
JP2012508663A (ja) 2012-04-12
WO2010055516A1 (fr) 2010-05-20

Similar Documents

Publication Publication Date Title
US20110268371A1 (en) Method for configurationally heat soldering plastic packaging and tamper evident plastic packagings
EP2365928A1 (fr) Système et procédé de thermosoudage configurationnel de sacs plastiques
US20140069921A1 (en) Three dimensional, continuous and configuration heat soldering
US4083451A (en) Method of heat sealing sheet-form layers of perforated plastic between layers of paperboard
US6820745B1 (en) Package of cylindrical article and production method therefor
US5110399A (en) Heat-cutting/bonding blade and heat-bonding apparatus
JP4684820B2 (ja) 切目形成方法及び筒状ラベル
JP3883664B2 (ja) 包装袋
JP5491812B2 (ja) エアセルラーシート製袋の製造方法
JP2022022862A (ja) ガゼット袋の製造方法及びガゼット袋
JP4765057B2 (ja) Ｐｔｐ包装体およびその製造方法
JP3883666B2 (ja) 包装袋
JPH10218139A (ja) Ｐｔｐシートのカール防止方法及び装置
JPH07257632A (ja) 任意に引き裂き開封可能なフィルム及びそれを用いた任意裂開可能な包装体並びにその包装体の使用方法
JP2006213011A (ja) 製袋機
JP2009029521A (ja) コンテナのパッケージ
JP2000072115A (ja) 包装体の製造方法
JP2000117854A (ja) 袋体の製造方法
JP2001130626A (ja) 円筒形物品の包装体およびその製造方法
JP6778495B2 (ja) 手提げ袋類の製造方法及び手提げ袋類用包装材
JP2001002014A (ja) 包装方法及び包装体
JP3161939U (ja) シート状加工物
JPH06114800A (ja) 穿孔装置を備えたサイドウエルダー型製袋装置
JP2021123414A (ja) 天板付きキャップシール
JP6054075B2 (ja) 包装体のシール構造およびシール方法

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 20110628

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO SE SI SK SM TR

DAX Request for extension of the european patent (deleted)
STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 20140603