WO2008155443A1 - A method for labeling a container - Google Patents

A method for labeling a container Download PDF

Info

Publication number
WO2008155443A1
WO2008155443A1 PCT/FI2007/050378 FI2007050378W WO2008155443A1 WO 2008155443 A1 WO2008155443 A1 WO 2008155443A1 FI 2007050378 W FI2007050378 W FI 2007050378W WO 2008155443 A1 WO2008155443 A1 WO 2008155443A1
Authority
WO
WIPO (PCT)
Prior art keywords
label
container
trailing edge
welding
leading
Prior art date
Application number
PCT/FI2007/050378
Other languages
French (fr)
Inventor
Noel Mitchell
Original Assignee
Upm Raflatac Oy
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 Upm Raflatac Oy filed Critical Upm Raflatac Oy
Priority to PCT/FI2007/050378 priority Critical patent/WO2008155443A1/en
Publication of WO2008155443A1 publication Critical patent/WO2008155443A1/en

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65C—LABELLING OR TAGGING MACHINES, APPARATUS, OR PROCESSES
    • B65C3/00—Labelling other than flat surfaces
    • B65C3/06—Affixing labels to short rigid containers
    • B65C3/08—Affixing labels to short rigid containers to container bodies
    • 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
    • B29C63/00—Lining or sheathing, i.e. applying preformed layers or sheathings of plastics; Apparatus therefor
    • B29C63/38—Lining or sheathing, i.e. applying preformed layers or sheathings of plastics; Apparatus therefor by liberation of internal stresses
    • B29C63/40—Lining or sheathing, i.e. applying preformed layers or sheathings of plastics; Apparatus therefor by liberation of internal stresses using sheet or web-like 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
    • 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
    • B29C65/66—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by liberation of internal stresses, e.g. shrinking of 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
    • B29C65/78—Means for handling the parts to be joined, e.g. for making containers or hollow articles, e.g. means for handling sheets, plates, web-like materials, tubular articles, hollow articles or elements to be joined therewith; Means for discharging the joined articles from the joining apparatus
    • B29C65/7841—Holding or clamping means for handling purposes
    • 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
    • B29C66/40—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
    • B29C66/4322—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 by joining a single sheet to itself
    • 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
    • B29C66/49—Internally supporting the, e.g. tubular, article during joining
    • B29C66/496—Internally supporting the, e.g. tubular, article during joining using a support which remains in the joined object
    • 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
    • B29C66/50—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
    • B29C66/51—Joining tubular articles, profiled elements or bars; Joining single elements to tubular articles, hollow articles or bars; Joining several hollow-preforms to form hollow or tubular articles
    • B29C66/53—Joining single elements to tubular articles, hollow articles or bars
    • B29C66/532—Joining single elements to the wall of tubular articles, hollow articles or bars
    • B29C66/5326—Joining single elements to the wall of tubular articles, hollow articles or bars said single elements being substantially 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
    • B29C66/70—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
    • B29C66/737—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 state of the material of the parts to be joined
    • B29C66/7371—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 state of the material of the parts to be joined oriented or heat-shrinkable
    • B29C66/73715—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 state of the material of the parts to be joined oriented or heat-shrinkable heat-shrinkable
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/73—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset
    • B29C66/739—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset
    • B29C66/7392—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of at least one of the parts being a thermoplastic
    • B29C66/73921—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of at least one of the parts being a thermoplastic characterised by the materials of both parts being thermoplastics
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/83—General aspects of machine operations or constructions and parts thereof characterised by the movement of the joining or pressing tools
    • B29C66/832—Reciprocating joining or pressing tools
    • B29C66/8322—Joining or pressing tools reciprocating along one axis
    • 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
    • B29C2795/00—Printing on articles made from plastics or substances in a plastic state
    • B29C2795/002—Printing on articles made from plastics or substances in a plastic state before shaping
    • 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
    • B29C66/73—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
    • B29C66/731—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 intensive physical properties of the material of the parts to be joined
    • B29C66/7313—Density
    • 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
    • B29C66/737—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 state of the material of the parts to be joined
    • B29C66/7371—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 state of the material of the parts to be joined oriented or heat-shrinkable
    • B29C66/73711—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 state of the material of the parts to be joined oriented or heat-shrinkable oriented
    • 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
    • B29C66/737—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 state of the material of the parts to be joined
    • B29C66/7371—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 state of the material of the parts to be joined oriented or heat-shrinkable
    • B29C66/73711—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 state of the material of the parts to be joined oriented or heat-shrinkable oriented
    • B29C66/73712—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 state of the material of the parts to be joined oriented or heat-shrinkable oriented mono-axially
    • 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
    • B29C66/737—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 state of the material of the parts to be joined
    • B29C66/7371—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 state of the material of the parts to be joined oriented or heat-shrinkable
    • B29C66/73711—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 state of the material of the parts to be joined oriented or heat-shrinkable oriented
    • B29C66/73713—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 state of the material of the parts to be joined oriented or heat-shrinkable oriented bi-axially or multi-axially
    • 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
    • B29C66/737—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 state of the material of the parts to be joined
    • B29C66/7377—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 state of the material of the parts to be joined amorphous, semi-crystalline or crystalline
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Definitions

  • the present invention relates to a method for labelling a container and a labelled container.
  • the present invention relates to roll-applied shrink- labels.
  • the roll-applied shrink-labels are cut from a roll and wrapped around a container so that the leading edge and the trailing edge of the label overlap.
  • the leading edge and the trailing edge are joined together, and the labelled container is led to a tunnel in which an elevated temperature prevails.
  • the label shrinks in the tunnel so that its shape conforms to the shape of the container.
  • the method of the invention overcomes the problems of prior art.
  • the present invention also offers enhancements to the energy efficiency, high productivity with low costs and ease of automated assembly line production.
  • labels are cut from a roll and wrapped around a container so that the leading edge and the trailing edge of the label overlap.
  • the leading edge and the trailing edge are joined together, and the labelled container is led to a tunnel in which an elevated temperature prevails.
  • the label shrinks in the tunnel so that its shape conforms to the shape of the container.
  • the containers may be, for example, bottles or jars.
  • the container may contain, for example, drinks, food, or medicines.
  • the label may cover the container substantially completely, or partially. It is possible that the label comprises perforations so that a part of the label, for example a part surrounding a cap, is easier to remove.
  • Ultrasonic welding involves the use of high frequency sound energy to soften or melt the thermoplastic at the joint. Parts to be joined are held together under pressure and are then subjected to ultrasonic vibrations usually at a frequency between 15 and 70 kHz. Since ultrasonic welding is very fast (weld times are typically less than 1 second), its use for seaming labels is well founded.
  • An ultrasonic welding machine consists of four main components: a power supply, a transducer, an amplitude modifying device (commonly called a Booster) and an acoustic tool called a sonotrode (commonly called a horn).
  • the power supply changes mains electricity at a frequency of 50-60Hz into a high frequency electrical supply operating at 20, 30 or 40kHz. This electrical energy is supplied to the transducer.
  • discs of piezoelectric material are sandwiched between two metal sections. The transducer changes the electrical energy into mechanical vibratory energy at ultrasonic frequencies.
  • the vibratory energy is then transmitted through the amplitude modifying device, which increases the amplitude of the sound wave.
  • the sound waves are then transmitted to the sonotrode.
  • the sonotrode is an acoustic tool that transfers the vibratory energy directly to the parts being assembled, and it also applies a welding pressure.
  • the vibrations are transmitted through the workpiece to the joint area.
  • the vibratory energy is converted to heat through friction - this then softens or melts the thermoplastic, and joins the parts together.
  • thermoplastic The materials to be welded together must be thermoplastic. It is also beneficial that the amorphous portion of the thermoplastic material is considerable because crystalline materials tend to absorb vibration energy. This means more power is needed to weld them, with far-field welding being a particular problem. Further, amorphous materials melt gradually over a range of temperature, whereas crystalline materials have a sharper melting temperature. This makes it harder to achieve a good quality weld.
  • a copolymer of acrylonitrile, butadiene and styrene (ABS), polyacryl, polycarbonate, polyvinyl chloride and cyclic polyolefin copolymers (COC) are adequately amorphous so that they are ideal for ultrasonic welding. Polyethylene, polypropylene, polyester and polyamide are semi-crystalline, and thus their ultrasonic welding is more difficult.
  • Preferred materials are materials which comprise cyclic polyolefin polymers and copolymers.
  • the COC is a copolymer that may be formed by polymerization of cyclic-olefin and alpha-olefin.
  • a cyclic olefin is a compound containing a polymerizable carbon-carbon double bond that is either within an alicyclic ring (e.g., as in norbornene) or is linked to an alicyclic ring (e.g., as in vinyl cyclohexane).
  • the COC may have a cyclic ring as part of the polymer backbone (e.g., ethylene/cyclopentene copolymer and ethylene/norbornene copolymer).
  • the COC may have a cyclic ring pendant to the polymer backbone (e.g., ethylene/vinyl cyclohexane copolymer).
  • the COC may comprise, for example, (polymerized) cyclic-olefin content derived from one or more of cyclopentene, substituted cyclopentene, norbornene, substituted norbornene, cyclobutene, cyclopentene, methylcyclopentene, 5-vinylnorbornene, 5- methylnorbornene, 5-ethylidenorbornene, dicyclopentadiene, tetracyclododecene, and cyclododecatriene.
  • the material to be welded must also have adequate shrinking properties as a function of temperature. Typically the material should shrink at least from 30 to 40 % at a temperature range of from 90 to 14O 0 C.
  • Fig. 1 shows a schematic view of how a container is labelled.
  • a container 4 is labelled in an apparatus, which comprises a welding device 8 and a holder 3 for the container 4.
  • a label 5 comprises a leading edge 6 and a trailing edge 7.
  • the label 5 is wrapped around the container 4 so that the leading edge and the trailing edge 7 overlap.
  • the label 5 comprises thermoplastic material.
  • the thermoplastic material may be, for example, a cyclic polyolefin copolymer.
  • the thermoplastic material may comprise one or more layers.
  • the welding device 8 comprises a power supply (not shown), a transducer 9, a booster 1 , a sonotrode 2, and a welding head 10.
  • the power supply changes mains electricity at a frequency of 50 - 60 Hz into a high frequency electrical supply operating at 20, 30, or 40 kHz.
  • the electrical energy is supplied from the power supply to the transducer 9.
  • the transducer 9 comprises discs of piezoelectric material sandwiched between two metallic sections.
  • the transducer 9 changes the electrical energy into mechanical vibratory energy having ultrasonic frequency in the manner described above.
  • the mechanical vibratory energy is transmitted to an amplitude modifying device 1 which increases the amplitudes of the sound waves.
  • the modified sound waves are transmitted to the sonotrode 2.
  • the sonotrode 2 is an acoustic tool which transfers the vibratory energy through its welding head 10 to the target point, i.e. to a seam of a label 5.
  • the welding head 10 also brings to the process the required pressure when it contacts with the material to be joined (In Fig. 1 , the welding head 10 and the label 5 are illustrated apart from each other. However, during the seaming process the welding head 10 is in contact with the material to be welded, and the welding head exerts pressure to the material.).
  • the vibratory energy is converted to heat so that the heat softens or melts the thermoplastic material of the label 5 at the seam.
  • the seam joins the overlapping leading edge 6 and the trailing edge 7 of the label 5.
  • the container 4 is transferred to a heated tunnel where the label 5 is allowed to shrink in order to conform with the shape of the container 4.
  • the construction of the apparatus may vary remarkably from the schematic drawing shown in Fig. 1 .

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)

Abstract

The present invention relates to a method for labelling a container (4), comprising: introducing thermoplastic label material which is wound on a roll; cutting a label (5) from the label material, the label having a leading edge (6) and a trailing edge (7); wrapping the label around the container so that the leading edge and the trailing edge overlap; welding the leading and the trailing edge together by ultrasonic welding; and shrinking the label at an elevated temperature. The present invention also relates to a labelled container.

Description

A method for labelling a container and a labelled container
The present invention relates to a method for labelling a container and a labelled container.
More precisely, the present invention relates to roll-applied shrink- labels. The roll-applied shrink-labels are cut from a roll and wrapped around a container so that the leading edge and the trailing edge of the label overlap. The leading edge and the trailing edge are joined together, and the labelled container is led to a tunnel in which an elevated temperature prevails. The label shrinks in the tunnel so that its shape conforms to the shape of the container.
The roll-applied shrink-labels based on BOPP (biaxially oriented polypropylene) films are well documented in literature. However, they suffer from one major disadvantage in that under practical conditions their shrinkage performance is limited to a maximum of approximately 20%. This greatly limits the choice of containers for which these films can be applied.
Other polyolefin films, in particular mono-axially oriented polypropylene films, have been developed with a maximum shrink- performance of 30 - 40%. However, these suffer from the major disadvantage in that these shrinkage properties are only realised when using hot-air/infra-red shrinkage tunnels operating at temperatures of 130° - 1350C, and therefore such films are not suitable for the commonly used steam-shrink tunnels operating at temperatures of approximately 950C.
Secondly, it is extremely difficult to hold the seams together in contrast to shrink-sleeves, when using adhesives to bond these seams combined with the use of shrink-tunnels at temperatures above 1000C. This invariably results in wrinkles or creases in the seams or even in that they come apart partially or even completely. Roll-applied PVC (polyvinyl chloride) films are available with shrinkage properties up to 40 - 45%. However, these suffer from the major disadvantage that they have a density, being PVC, of greater than 1 and cannot therefore be separated from polyester (PET) bottles during a flotation - washing and recycling process. Further, PVC is a less attractive alternative for environmental reasons.
Only labels with a density of less than one can be separated from the PET bottles in such a process.
With traditional sleeve materials, the seams are not joined by adhesives, but rather by a process of solvent-welding where the polymer material is softened by a solvent and then the softened or "melted" films are bonded together to form one integral film without the weakness of an adhesive-join. Such solvent-welded shrink-sleeve seams do not suffer from any problems in withstanding the temperature of heat tunnels even at very high shrink-performances of 70 - 80%.
However, such a process of solvent-welding with roll-applied shrink- labels is technically not feasible.
Some of these problems have been overcome with the introduction of cyclic-olefin-copolymer ( COC )-modified polyolefin films which have a high shrink of up to 70-80 %, as well as a density of less than one which allows separation from PET in the bottle-recycling process . However, the major disadvantage remains that also the seams in this case cannot be held adequately together with the use of adhesive systems.
The method of the invention overcomes the problems of prior art. In addition to the above-mentioned technical problems, the present invention also offers enhancements to the energy efficiency, high productivity with low costs and ease of automated assembly line production. In the method of the invention, labels are cut from a roll and wrapped around a container so that the leading edge and the trailing edge of the label overlap. The leading edge and the trailing edge are joined together, and the labelled container is led to a tunnel in which an elevated temperature prevails. The label shrinks in the tunnel so that its shape conforms to the shape of the container. The containers may be, for example, bottles or jars. The container may contain, for example, drinks, food, or medicines. The label may cover the container substantially completely, or partially. It is possible that the label comprises perforations so that a part of the label, for example a part surrounding a cap, is easier to remove.
When the leading edge and the trailing edge are joined together, a process of ultra-sonic or high-frequency welding is used to cause the surface of the label film to soften or melt in a similar fashion to that of solvent-welding. The edges of the film are joined so that the label is uniform, and there is not weaknesses in the joint. These high- frequency welded films can withstand the high temperatures of the shrink tunnels even with very high-shrink performance films.
Ultrasonic welding involves the use of high frequency sound energy to soften or melt the thermoplastic at the joint. Parts to be joined are held together under pressure and are then subjected to ultrasonic vibrations usually at a frequency between 15 and 70 kHz. Since ultrasonic welding is very fast (weld times are typically less than 1 second), its use for seaming labels is well founded.
An ultrasonic welding machine consists of four main components: a power supply, a transducer, an amplitude modifying device (commonly called a Booster) and an acoustic tool called a sonotrode (commonly called a horn). The power supply changes mains electricity at a frequency of 50-60Hz into a high frequency electrical supply operating at 20, 30 or 40kHz. This electrical energy is supplied to the transducer. Within the transducer, discs of piezoelectric material are sandwiched between two metal sections. The transducer changes the electrical energy into mechanical vibratory energy at ultrasonic frequencies.
The vibratory energy is then transmitted through the amplitude modifying device, which increases the amplitude of the sound wave. The sound waves are then transmitted to the sonotrode. The sonotrode is an acoustic tool that transfers the vibratory energy directly to the parts being assembled, and it also applies a welding pressure. The vibrations are transmitted through the workpiece to the joint area. Here the vibratory energy is converted to heat through friction - this then softens or melts the thermoplastic, and joins the parts together.
The materials to be welded together must be thermoplastic. It is also beneficial that the amorphous portion of the thermoplastic material is considerable because crystalline materials tend to absorb vibration energy. This means more power is needed to weld them, with far-field welding being a particular problem. Further, amorphous materials melt gradually over a range of temperature, whereas crystalline materials have a sharper melting temperature. This makes it harder to achieve a good quality weld. A copolymer of acrylonitrile, butadiene and styrene (ABS), polyacryl, polycarbonate, polyvinyl chloride and cyclic polyolefin copolymers (COC) are adequately amorphous so that they are ideal for ultrasonic welding. Polyethylene, polypropylene, polyester and polyamide are semi-crystalline, and thus their ultrasonic welding is more difficult.
Preferred materials are materials which comprise cyclic polyolefin polymers and copolymers. The COC is a copolymer that may be formed by polymerization of cyclic-olefin and alpha-olefin. A cyclic olefin is a compound containing a polymerizable carbon-carbon double bond that is either within an alicyclic ring (e.g., as in norbornene) or is linked to an alicyclic ring (e.g., as in vinyl cyclohexane). The COC may have a cyclic ring as part of the polymer backbone (e.g., ethylene/cyclopentene copolymer and ethylene/norbornene copolymer). The COC may have a cyclic ring pendant to the polymer backbone (e.g., ethylene/vinyl cyclohexane copolymer). The COC may comprise, for example, (polymerized) cyclic-olefin content derived from one or more of cyclopentene, substituted cyclopentene, norbornene, substituted norbornene, cyclobutene, cyclopentene, methylcyclopentene, 5-vinylnorbornene, 5- methylnorbornene, 5-ethylidenorbornene, dicyclopentadiene, tetracyclododecene, and cyclododecatriene.
The material to be welded must also have adequate shrinking properties as a function of temperature. Typically the material should shrink at least from 30 to 40 % at a temperature range of from 90 to 14O0C.
In the following, the invention will be described with reference to a drawing.
Fig. 1 shows a schematic view of how a container is labelled.
A container 4 is labelled in an apparatus, which comprises a welding device 8 and a holder 3 for the container 4. A label 5 comprises a leading edge 6 and a trailing edge 7. The label 5 is wrapped around the container 4 so that the leading edge and the trailing edge 7 overlap. The label 5 comprises thermoplastic material. The thermoplastic material may be, for example, a cyclic polyolefin copolymer. The thermoplastic material may comprise one or more layers. There is printing and/or images on the surface of the label 5. It is also possible that the label is reverse printed, and the printing/images can be seen through the transparent thermoplastic material.
The welding device 8 comprises a power supply (not shown), a transducer 9, a booster 1 , a sonotrode 2, and a welding head 10. The power supply changes mains electricity at a frequency of 50 - 60 Hz into a high frequency electrical supply operating at 20, 30, or 40 kHz. The electrical energy is supplied from the power supply to the transducer 9. The transducer 9 comprises discs of piezoelectric material sandwiched between two metallic sections. The transducer 9 changes the electrical energy into mechanical vibratory energy having ultrasonic frequency in the manner described above. The mechanical vibratory energy is transmitted to an amplitude modifying device 1 which increases the amplitudes of the sound waves. The modified sound waves are transmitted to the sonotrode 2. The sonotrode 2 is an acoustic tool which transfers the vibratory energy through its welding head 10 to the target point, i.e. to a seam of a label 5. The welding head 10 also brings to the process the required pressure when it contacts with the material to be joined (In Fig. 1 , the welding head 10 and the label 5 are illustrated apart from each other. However, during the seaming process the welding head 10 is in contact with the material to be welded, and the welding head exerts pressure to the material.). The vibratory energy is converted to heat so that the heat softens or melts the thermoplastic material of the label 5 at the seam. The seam joins the overlapping leading edge 6 and the trailing edge 7 of the label 5. After the seam has been formed by the welding device 8, the container 4 is transferred to a heated tunnel where the label 5 is allowed to shrink in order to conform with the shape of the container 4.
The construction of the apparatus may vary remarkably from the schematic drawing shown in Fig. 1 .

Claims

Claims:
1 . A method for labelling a container, comprising
- introducing thermoplastic label material which is wound on a roll, - cutting a label from the label material, the label having a leading edge and a trailing edge,
- wrapping the label around the container so that the leading edge and the trailing edge overlap,
- welding the leading and the trailing edge together by ultrasonic welding, and
- shrinking the label at an elevated temperature.
2. The method according to claim 1 , characterized in that the leading and the trailing edge are welded together by using a frequency from 15 to 70 kHz.
3. The method according to claim 1 , characterized in that the thermoplastic label material comprises a cyclic polyolefin copolymer.
4. A labelled container manufactured according to any preceding claim.
PCT/FI2007/050378 2007-06-19 2007-06-19 A method for labeling a container WO2008155443A1 (en)

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PCT/FI2007/050378 WO2008155443A1 (en) 2007-06-19 2007-06-19 A method for labeling a container

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITTO20120337A1 (en) * 2012-04-17 2013-10-18 Sidel Spa Con Socio Unico METHOD AND UNIT FOR FORMING TUBULAR SHEETS OF MATERIAL IN THE FORM OF TAPE, IN PARTICULAR IN A LABELING MACHINE

Citations (4)

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Publication number Priority date Publication date Assignee Title
WO1997013236A2 (en) * 1995-10-02 1997-04-10 Rpc Container Ltd. Decorative package with ultrasound-produced welds
US20010002614A1 (en) * 1999-04-21 2001-06-07 Menayan Victor V. In-line continuous feed sleeve labeling machine and method
WO2005085073A1 (en) * 2004-03-09 2005-09-15 Sig Technology Ag Labelling machine with ultrasound welding device for making a tubular label made of heat-shrinking film and welding process
WO2006066798A1 (en) * 2004-12-20 2006-06-29 Sidel S.P.A. Process and device for automatically determining the beginning of a welding process for making tubular labels

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1997013236A2 (en) * 1995-10-02 1997-04-10 Rpc Container Ltd. Decorative package with ultrasound-produced welds
US20010002614A1 (en) * 1999-04-21 2001-06-07 Menayan Victor V. In-line continuous feed sleeve labeling machine and method
WO2005085073A1 (en) * 2004-03-09 2005-09-15 Sig Technology Ag Labelling machine with ultrasound welding device for making a tubular label made of heat-shrinking film and welding process
WO2006066798A1 (en) * 2004-12-20 2006-06-29 Sidel S.P.A. Process and device for automatically determining the beginning of a welding process for making tubular labels

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITTO20120337A1 (en) * 2012-04-17 2013-10-18 Sidel Spa Con Socio Unico METHOD AND UNIT FOR FORMING TUBULAR SHEETS OF MATERIAL IN THE FORM OF TAPE, IN PARTICULAR IN A LABELING MACHINE

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