EP4065370A1 - Film et partie d'emballage pour former des emballages - Google Patents

Film et partie d'emballage pour former des emballages

Info

Publication number
EP4065370A1
EP4065370A1 EP20816454.1A EP20816454A EP4065370A1 EP 4065370 A1 EP4065370 A1 EP 4065370A1 EP 20816454 A EP20816454 A EP 20816454A EP 4065370 A1 EP4065370 A1 EP 4065370A1
Authority
EP
European Patent Office
Prior art keywords
layer
film
adhesive layer
packaging
range
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Withdrawn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
EP20816454.1A
Other languages
German (de)
English (en)
Inventor
Christian Hübner
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.)
Profol GmbH
Original Assignee
Profol GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Profol GmbH filed Critical Profol GmbH
Publication of EP4065370A1 publication Critical patent/EP4065370A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J7/00—Adhesives in the form of films or foils
    • C09J7/20—Adhesives in the form of films or foils characterised by their carriers
    • C09J7/29—Laminated material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B32B37/12—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by using adhesives
    • B32B37/1207—Heat-activated adhesive
    • 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
    • B29C51/00—Shaping by thermoforming, i.e. shaping sheets or sheet like preforms after heating, e.g. shaping sheets in matched moulds or by deep-drawing; Apparatus therefor
    • B29C51/14—Shaping by thermoforming, i.e. shaping sheets or sheet like preforms after heating, e.g. shaping sheets in matched moulds or by deep-drawing; Apparatus therefor using multilayered preforms or sheets
    • 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
    • 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
    • B29C65/14—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
    • B29C65/1432—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 direct heating of the surfaces to be joined
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—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
    • B29C65/1435—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 at least passing through one of the parts to be joined, i.e. transmission 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
    • B29C65/1429—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
    • B29C65/1445—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 heating both sides of the joint
    • 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
    • B29C65/1477—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 an absorber or impact modifier
    • 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
    • B29C65/76—Making non-permanent or releasable 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
    • B29C66/02—Preparation of the material, in the area to be joined, prior to joining or welding
    • B29C66/024—Thermal pre-treatments
    • B29C66/0242—Heating, or preheating, e.g. drying
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/11—Joint cross-sections comprising a single joint-segment, i.e. one of the parts to be joined comprising a single joint-segment in the joint cross-section
    • B29C66/112—Single lapped joints
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/11—Joint cross-sections comprising a single joint-segment, i.e. one of the parts to be joined comprising a single joint-segment in the joint cross-section
    • B29C66/112—Single lapped joints
    • B29C66/1122—Single lap to lap joints, i.e. overlap joints
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/13—Single flanged joints; Fin-type joints; Single hem joints; Edge joints; Interpenetrating fingered joints; Other specific particular designs of joint cross-sections not provided for in groups B29C66/11 - B29C66/12
    • B29C66/131—Single flanged joints, i.e. one of the parts to be joined being rigid and flanged in the joint area
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/40—General aspects of joining substantially flat articles, e.g. plates, sheets or web-like materials; Making flat seams in tubular or hollow articles; Joining single elements to substantially flat surfaces
    • B29C66/41—Joining substantially flat articles ; Making flat seams in tubular or hollow articles
    • B29C66/43—Joining a relatively small portion of the surface of said articles
    • B29C66/431—Joining the articles to themselves
    • 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
    • B29C66/53261—Enclosing tubular articles between substantially flat elements
    • B29C66/53262—Enclosing spouts between the walls of bags, e.g. of medical bags
    • B29C66/53263—Enclosing spouts between the walls of bags, e.g. of medical bags said spouts comprising wings, e.g. said spouts being of ship-like or canoe-like form to avoid leaks in the corners
    • 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
    • B29C66/534—Joining single elements to open ends of tubular or hollow articles or to the ends of bars
    • B29C66/5346—Joining single elements to open ends of tubular or hollow articles or to the ends of bars said single elements being substantially flat
    • B29C66/53461—Joining single elements to open ends of tubular or hollow articles or to the ends of bars said single elements being substantially flat joining substantially flat covers and/or substantially flat bottoms to open ends of 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
    • 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
    • B29C66/84—Specific machine types or machines suitable for specific applications
    • B29C66/851—Bag or container making machines
    • B29C66/8511—Bag making machines
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B27/08—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/18—Layered products comprising a layer of synthetic resin characterised by the use of special additives
    • B32B27/20—Layered products comprising a layer of synthetic resin characterised by the use of special additives using fillers, pigments, thixotroping agents
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/32—Layered products comprising a layer of synthetic resin comprising polyolefins
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
    • B32B7/04—Interconnection of layers
    • B32B7/06—Interconnection of layers permitting easy separation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
    • B32B7/04—Interconnection of layers
    • B32B7/12—Interconnection of layers using interposed adhesives or interposed materials with bonding properties
    • 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
    • B65D65/00—Wrappers or flexible covers; Packaging materials of special type or form
    • B65D65/38—Packaging materials of special type or form
    • B65D65/40—Applications of laminates for particular packaging purposes
    • 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
    • B65D75/52—Details
    • B65D75/58—Opening or contents-removing devices added or incorporated during package manufacture
    • B65D75/5861—Spouts
    • B65D75/5872—Non-integral spouts
    • B65D75/5883—Non-integral spouts connected to the package at the sealed junction of two package walls
    • 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
    • B65D77/00—Packages formed by enclosing articles or materials in preformed containers, e.g. boxes, cartons, sacks or bags
    • B65D77/10—Container closures formed after filling
    • B65D77/20—Container closures formed after filling by applying separate lids or covers, i.e. flexible membrane or foil-like covers
    • B65D77/2024—Container closures formed after filling by applying separate lids or covers, i.e. flexible membrane or foil-like covers the cover being welded or adhered to the container
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J7/00—Adhesives in the form of films or foils
    • C09J7/30—Adhesives in the form of films or foils characterised by the adhesive composition
    • C09J7/38—Pressure-sensitive adhesives [PSA]
    • C09J7/381—Pressure-sensitive adhesives [PSA] based on macromolecular compounds obtained by reactions involving only carbon-to-carbon unsaturated bonds
    • C09J7/385—Acrylic polymers
    • 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
    • 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
    • B29C51/00—Shaping by thermoforming, i.e. shaping sheets or sheet like preforms after heating, e.g. shaping sheets in matched moulds or by deep-drawing; Apparatus therefor
    • B29C51/10—Forming by pressure difference, e.g. vacuum
    • 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
    • B29C65/1406—Ultraviolet [UV] 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
    • B29C65/1403—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
    • B29C65/1409—Visible light 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
    • 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
    • B29C66/735—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
    • 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
    • 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
    • B29K2105/0097—Glues or adhesives, e.g. hot melts or thermofusible adhesives
    • 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
    • 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
    • B29L2031/7129—Bags, sacks, sachets open
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2250/00—Layers arrangement
    • B32B2250/40—Symmetrical or sandwich layers, e.g. ABA, ABCBA, ABCCBA
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2264/00—Composition or properties of particles which form a particulate layer or are present as additives
    • B32B2264/10—Inorganic particles
    • B32B2264/105—Metal
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/70—Other properties
    • B32B2307/732—Dimensional properties
    • B—PERFORMING OPERATIONS; TRANSPORTING
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    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2405/00—Adhesive articles, e.g. adhesive tapes
    • B—PERFORMING OPERATIONS; TRANSPORTING
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    • B32B2439/00—Containers; Receptacles
    • B—PERFORMING OPERATIONS; TRANSPORTING
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    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2439/00—Containers; Receptacles
    • B32B2439/70—Food packaging
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J2423/00—Presence of polyolefin
    • C09J2423/006—Presence of polyolefin in the substrate
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J2423/00—Presence of polyolefin
    • C09J2423/04—Presence of homo or copolymers of ethene
    • C09J2423/046—Presence of homo or copolymers of ethene in the substrate
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J2423/00—Presence of polyolefin
    • C09J2423/10—Presence of homo or copolymers of propene
    • C09J2423/106—Presence of homo or copolymers of propene in the substrate

Definitions

  • the present invention relates to a film for forming a package.
  • the film can be applied to a target object or it can itself be shaped into a packaging by welding at least one area of the film to a region of the target object or to a further region of the film.
  • the film can be welded with a tool under the action of heat and / or pressure and, in a preferred embodiment, forms, for example, a lid of a gift or container packaging or a packaging bag.
  • This packaging is used in particular for the packaging of food, bulk or liquid goods and other consumer products.
  • the present invention also relates to a corresponding packaging part.
  • a package consists of several components made of different materials or plastics.
  • plastics For example, it is difficult to recycle an empty yoghurt pot made of plastic with adhering residues of an aluminum foil.
  • the use of different plastics also raises problems, whereby this applies not only to substances from different polymer (classes) but also to identical polymers or polymer classes which have additives in different or too large amounts.
  • a first step is therefore to select plastics, to manufacture them and, if necessary, to refine them in such a way that they can then be further processed into recyclable packaging or into the various components of recyclable packaging.
  • a second step can then be seen in the packaging infrastructure, ie in the existing processes and systems for filling and / or packaging the goods.
  • the existing infrastructure cannot necessarily process the new plastics and packaging materials, but at the same time cannot be replaced without enormous effort. It is therefore also important to provide packaging materials which can be processed with the existing infrastructure, ie existing packaging and filling systems, and existing processes, ie existing conditions with regard to temperature, purity, speed, etc.
  • the object is therefore to provide a plastic film with which packaging that is as pure as possible and possibly also multi-component can be achieved. Not only should the conditions for the packaging with regard to reusability or recyclability be met, but also overall the conditions that are placed on the packaging of the product itself, such as stability, food compatibility, visual appearance and properties, etc. Furthermore, should the film can also be processed in existing systems with little or no modifications.
  • a film for forming a packaging comprising at least one cover layer and at least one adhesive layer, wherein the cover layer consists of a first polyolefin-based plastic with a first layer thickness, wherein the adhesive layer consists of a second polyolefin-based plastic with a second layer thickness, wherein at least the adhesive layer is designed to be fusible in order to weld to a target surface, and wherein at least the adhesive layer has particles which absorb radiation to heat the at least part of the film.
  • a packaging part for forming a package comprising at least one body and at least one outer adhesive layer, the body and the adhesive layer being made of a polyolefin-based plastic, at least the adhesive layer being designed to be meltable in order to be able to withstand a To weld the target surface, and wherein at least the adhesive layer has particles which absorb radiation in order to warm up at least a part of the packaging part.
  • FIGS. 1A to IE show / show schematic sectional views of FIG.
  • FIGS. 2A to 2F are schematic views of FIG.
  • Figure 3 is a schematic view of a
  • FIGS. 4A to 4C are schematic views of tools as a possible part of a device for forming a package with a film according to an embodiment of the present invention.
  • FIGS. 1A to ID show schematic sectional views of films according to corresponding embodiments of the present invention.
  • a film 110 is provided for forming a package, comprising at least one cover layer 111 and at least one adhesive layer 112.
  • the cover layer 111 has a first polyolefin-based plastic or is made of this and has a first layer thickness.
  • the adhesive layer 112 has a second polyolefin-based plastic or is made from this and has a second layer thickness.
  • At least the adhesive layer 112 is designed to be fusible in order to weld to a target surface, and at least the adhesive layer 112 has particles which absorb radiation in order to heat up at least part of the film.
  • the particles can be excited by high-energy radiation in order, in particular, to warm up and to give off this heat to the environment in the film.
  • These particles can preferably be present in a concentration in a range from 50 ppm to 500 ppm, more preferably in a range from 100 ppm to 150 ppm, and have one or more of the following compositions: copper, copper compounds, iron, pure iron or corresponding compounds .
  • ppm relates to the corresponding weight fraction.
  • the absorption properties of the particles are preferably adapted to a radiation to be used, in particular to a wavelength or a range of wavelengths of the radiation in the form of infrared light, visible light, ultraviolet light, or generally electromagnetic radiation and / or particle radiation.
  • the radiation used preferably penetrates the first and / or the second polyolefin-based plastic so that a region of the film can be heated in a targeted manner.
  • the heating can in particular serve to prepare the film for welding.
  • the film can be exposed to radiation over a large area or selectively before the packaging is formed and can thus be warmed up in a targeted manner.
  • the tool only has to provide a reduced heat input in order to melt at least the adhesive layer for welding.
  • This can in particular protect other parts of the film, in particular the cover layer 111, from being subjected to stress during welding, and thus, for example, reduce or essentially completely prevent damage, warpage, bursting or the like.
  • a film 120 for forming a package, comprising at least one cover layer 121, a core layer 122 and at least one adhesive layer 123
  • Cover layer 121 and / or core layer 122 consist of a first polyolefin-based plastic or at least point this onto the upper cover layer 121 forms a first layer thickness together with core layer 112, the adhesive layer 123 being made of a second polyolefin-based plastic with a second layer thickness.
  • the adhesive layer 123 has the aforementioned particles.
  • FIG. 1C shows a film 130 for forming a packaging, which again has at least one cover layer, here 131, and one adhesive layer, here 133, as already described.
  • cover layer here 131
  • adhesive layer here 133
  • FIGS. 1A and 1B the preferred configurations according to the descriptions in connection with FIGS. 1A and 1B apply.
  • a further layer 132 is provided in this embodiment, so that overall a three-layer structure consisting of a cover layer, a "first" adhesive layer 132 as a separable or peelable separating / peeling layer, and the "second" adhesive layer 133 originally provided as one results in a non-separable or peelable sealing layer.
  • the film 130 can be welded onto a target object in the form of a vessel (eg yogurt cup) and seal it tightly.
  • a vessel eg yogurt cup
  • the further layer 132 can then serve to enable uniform and clean opening or reclosing.
  • FIG. ID shows a film 150 for forming a packaging, which has at least one cover layer 151, a core layer 152 and an adhesive layer 153.
  • cover layer 151 a cover layer 151
  • core layer 152 a core layer 152
  • adhesive layer 153 an adhesive layer 153.
  • the layer thickness of the layer 151 can preferably be in a range from 5 to 20 ⁇ m, the layer thickness of the layer 152 preferably in a range from 140 to 260 ⁇ m, the layer thickness of the layer 153 preferably in a range from 5 to 20 ⁇ m, and thus the The total layer thickness of the film 150 is preferably in a range from 150 to 300 ⁇ m.
  • the increased layer thickness has the task of enabling packaging to be produced by deep-drawing, as is described, for example, in connection with FIGS. 2E and 2F.
  • a film for forming a package by deep drawing is provided in a single-layer configuration, e.g. only layer 152 from the aforementioned embodiment, with a total layer thickness in a range from 140 to 300 ⁇ m.
  • FIG. IE shows possible concentration profiles of the particles within a film according to the invention according to corresponding, respective embodiments.
  • the profiles and arrangement shown schematically there are in principle independent of the exact sub-layer structure, for which examples have already been discussed above in connection with FIGS. 1A to 1D.
  • the description therefore relates to the main focus on a concentration of the particles which absorb radiation in order to warm up at least part of the film, and corresponding concentration profiles along a cross-sectional direction of the film, but with the top layer or top layers being arranged on top, and adhesive layer (s ) below.
  • a first concentration profile is shown schematically at 141, in which the particles are essentially provided in a region of the adhesive layer. This can be advantageous if the radiation arrives from a side which faces the adhesive layer, in this case from below. In this way, the adhesive layer can be heated up in a targeted manner in order to prepare it for welding.
  • a second concentration profile is shown schematically at 142, in which the particles are provided essentially in a region above the adhesive layer or in an upper region thereof. This can be advantageous if, for other reasons, the adhesive layer should have the lowest possible proportion of particles, but should continue to be effectively warmed up in order to prepare them for welding.
  • a third concentration profile is shown schematically at 143, in which the particle concentration increases, coming from above, in order to assume at least a relative maximum in a region of the adhesive layer itself. This can be advantageous if a distortion or internal tension in the film is to be avoided. In particular, an abrupt temperature profile in the film can thus be avoided.
  • a fourth concentration profile is shown schematically at 144, in which the particles are essentially only provided in the core layer and a lower layer. With reference to the preceding FIG. ID by way of example, only layers 152 and 153 can thus have the particles.
  • the second layer thickness is smaller than the first layer thickness
  • the adhesive layer 112 can have an inorganic filler with a weight fraction of greater than 20%.
  • the cover layer (s) can have a layer thickness in a range from 70 ⁇ m to 105 ⁇ m and the adhesive layer can have a layer thickness in a range from 7 ⁇ m to 20 ⁇ m (preferably approximately 8 ⁇ m). If a multi-layer cover layer, as shown for example in FIG. 1B, is provided, the upper cover layer can have a layer thickness in a range from 10 ⁇ m to 20 ⁇ m, and the core layer can have a layer thickness in a range from 60 ⁇ m to 85 ⁇ m.
  • the polyolefin-based plastics can each have polyethylene (PE) and / or polypropylene (PP) and the adhesive layer can contain one or more acrylates.
  • the inorganic filler can have particles of chalk, lime, talc and / or flake-form particles, the diameter of the particles being in a range from 0.7 ⁇ m to 3 ⁇ m.
  • the proportion by weight of the inorganic filler can be in a range from 20% to 30%, and more preferably in a range from 25% to 50%.
  • FIGS. 2A to 2F show schematic views in connection with the use and advantages of films according to corresponding embodiments of the present invention.
  • a molded piece 1 of a film according to an embodiment of the present invention is shown from above.
  • the shaped piece can serve as a closure lid of a vessel, for example as part of a food packaging, and therefore have a tab which makes it easier to pull off the lid.
  • a piece 2 of a film according to an embodiment of the invention can form a lid for a vessel 20 (eg cup) as part of the packaging to be formed.
  • the piece 2 of the film is applied to an edge of the vessel 20, for example.
  • This application can include welding with a tool 91.
  • the properties of the film according to the embodiments of the present invention allow the cover to be applied to the target object in such a way that no contamination occurs in and around a closure area.
  • the piece 2 of the film can be exposed to radiation before the welding, so that at least part of the film is advantageously warmed up.
  • the radiation can originate from a radiation source or can also originate in the form of thermal radiation from a heated tool 91.
  • the film can be pulled off the target object in a simple and uniform manner without tools ("peelable").
  • FIG. 2C several pieces or parts 31, 32, 33 of a film according to the invention can also be welded along a seam 38 to form a packaging in order to form a pocket, a pouch or - as shown - a stand-up pouch.
  • the two adhesive layers of two pieces or areas of film are preferably welded to one another.
  • Another packaging part 39 can also be welded together, for example in order to provide simple product removal, pouring or pouring and / or a closure of the packaging. Further details on the formation of similar bag-shaped packagings and — also in general — packagings of different shapes are also described in connection with FIGS. 3 and 4A to 4C.
  • a packaging part 37 is provided for forming a packaging, which has a body 371 and at least one outer adhesive layer 370, the body 371 and the adhesive layer 370 from one Polyolefin-based plastic consist, the adhesive layer 370 is designed to be meltable in order to weld to a target surface, and at least the adhesive layer 370 has the aforementioned particles which absorb radiation in order to warm up at least a part of the packaging part.
  • the packaging part 370 can therefore be produced from a suitable plastic, as mentioned, and at least partially have the particles in an outer edge region.
  • An outer layer 37 is thus formed in the sense of an adhesive layer, which has the particles which absorb radiation in order to warm up at least a part of the packaging part.
  • the packaging part 370 can advantageously also be warmed up before being welded to pieces of a film, for example to form a stand-up pouch as shown in FIG. 2C. Irradiation of the packaging part 370 has the result that at least the outer area, i.e. in particular the area which is to be subsequently welded, is warmed up. This then provides the advantage that less heat has to be transported through the film during welding in order to weld the packaging part to the film. This process can thus be carried out more quickly and the reduced thermal load on the outer packaging film also leads to less warpage and thus to optically perfect packaging. In general, it should also be said about a packaging part according to the invention that what is described in detail about the embodiments of the film with regard to plastics, materials, layer thicknesses, particles and particle concentrations can also apply to the packaging part.
  • a deep-drawing process can be used to form a packaging and / or to form a further component or packaging part.
  • a plastic blank is sucked or pressed into a mold cavity (FIG. 2E) ( Figure 2F).
  • a plastic blank 50 is manufactured from a film according to the invention with an increased layer thickness, such as, for example, the film 150 described in connection with FIG. First, this blank 50 is heated up in order to carry out a subsequent deformation.
  • the particles which absorb radiation, make this process quicker and gentler for the plastic, since the entire amount of heat does not have to be passed through a layer part (in the sense of heat conduction), but the energy in the form of radiation can pass through this part of the film and is only converted into heat locally at the desired location by the particles.
  • the warm blank 50 is held with a holder 992 on a tool 991 with a mold cavity 993 and is sucked into the latter by negative pressure.
  • a mold cavity 993 for forming a cup e.g. the cup 20 described in connection with FIG. 2B
  • FIG. 2E shows how a warm blank 50 is held with a holder 995 on a tool 994 with a mold cavity 996 and is pressed into the latter by overpressure.
  • FIG. 3 shows a system and generally an embodiment in which, in particular, bag-shaped or bag-shaped packaging is produced from a film 4 according to the invention.
  • the film 4 can initially be folded one or more times by means of corresponding guide members 93. In a folded state in which corresponding sections of the adhesive layer advantageously face one another. In this state, the film can then be welded by means of one or more tools 94. Overall, a large number of packagings 40 are thus obtained from the film 4, this advantageously in a quasi-endless, linear composite.
  • the production method of a large number of packages in one Continuous processing of the film and the packaging compound may subject the film to heavy loads.
  • a composite is often pulled through a production plant at high speed, and the composite - in particular then also the melted weld seam, fresh weld seams and all weld seams that are still subject to tension - must carry or at least partially dissipate the force necessary for conveying.
  • the embodiments of the present invention can provide significant advantages. Since the points and areas to be welded can be preheated in the broadest sense, the weld seam can be formed more quickly and with less heat input. The reduced heat input thus allows faster processing or the use of existing systems with foils which have the improved properties already discussed with regard to reuse (recycling). Also, by concentrating the heat on the areas of the film that are actually to be melted, warping or damage to the packaging composite can be avoided while the processing speed remains the same or even increases. In the context of product packaging, this is particularly important with regard to a decoration or a print on the film: the desired visual impression of the finished packaging can also be achieved at the required processing speed.
  • FIGS. 4A to 4C show schematic views of tools as a possible part of a device for forming a package with a film according to an embodiment of the present invention.
  • a film or film layer 5 is irradiated by thermal radiation.
  • tools 95, 96 such as, for example, the heated press jaws of a welding tool, can convey heat to the desired area of the film by the heat radiation of the tools from the particles are absorbed in the right place in the film and heat up the corresponding target areas of the film.
  • FIG. 4B shows schematically a radiator which exposes a film 6 to radiation through a screen 97.
  • the radiation source can be intermittently shaded by a further screen or an electrical switching device so that even when the film 6 moves along the screen 97, well-defined areas of radiation exposure and thus targeted heating result.
  • FIG. 4C schematically shows a heat sword 98 which can be inserted into a folded film in order to give off thermal radiation to the inside of the film.
  • a radiant heater according to the embodiment in FIG. 4B or 4C can be placed in front of a conventional welding press 94 in order to minimize the necessary heat input and the process time.
  • Radiant heating with the jaws themselves as in FIG. 4A can also be implemented in the system in FIG. 3, for example by briefly stopping the film and the composite with the jaws 94 open in order to preheat the desired areas of the film 4 before conventional processing , ie welding, takes place with the tool 94.
  • the polyolefin-based plastics can each have polyethylene (PE) and / or polypropylene (PP) and the adhesive layer can have one or more acrylates.
  • EPM ethene-propene rubber particles
  • the adhesive layers mentioned can also have an inorganic filler in the form of further particles of chalk, lime, talc and / or platelet-shaped further particles, the diameter of the further particles being in a range from 0.7 ⁇ m to 3 ⁇ m.
  • the proportion by weight of the inorganic filler can be in a range from 20% to 30%, and more preferably in a range from 25% to 50%.
  • plastics can generally have further additives, such as, for example, polybutene, reduction Tm, elastic components, or so-called interfering substances which, individually or as a combination, provide the desired properties of the film or individual layers.
  • additives such as, for example, polybutene, reduction Tm, elastic components, or so-called interfering substances which, individually or as a combination, provide the desired properties of the film or individual layers.

Abstract

Film ou partie d'emballage pour former un emballage comprenant au moins un corps et au moins une couche adhésive externe, le corps et la couche adhésive étant constitués d'une matière plastique à base de polyoléfine, au moins la couche adhésive est sous une forme pouvant être dissoute, afin de se lier à une surface prévue, et au moins la couche adhésive comprend des particules qui absorbent le rayonnement afin de chauffer au moins une partie de la partie d'emballage.
EP20816454.1A 2019-11-27 2020-11-27 Film et partie d'emballage pour former des emballages Withdrawn EP4065370A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102019218364.6A DE102019218364A1 (de) 2019-11-27 2019-11-27 Folie und Verpackungsteil zur Bildung von Verpackungen
PCT/EP2020/083650 WO2021105375A1 (fr) 2019-11-27 2020-11-27 Film et partie d'emballage pour former des emballages

Publications (1)

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EP4065370A1 true EP4065370A1 (fr) 2022-10-05

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Application Number Title Priority Date Filing Date
EP20816454.1A Withdrawn EP4065370A1 (fr) 2019-11-27 2020-11-27 Film et partie d'emballage pour former des emballages

Country Status (4)

Country Link
US (1) US20220411666A1 (fr)
EP (1) EP4065370A1 (fr)
DE (1) DE102019218364A1 (fr)
WO (1) WO2021105375A1 (fr)

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4790113A (en) * 1986-02-18 1988-12-13 Gregory Robert K Adjustable depth truss
DE10003423A1 (de) * 2000-01-26 2001-08-02 Hoechst Trespaphan Gmbh Verpackung aus biaxial orientierter Polyolefinfolie
EP2144764B1 (fr) * 2007-05-09 2010-11-03 ACTEGA DS GmbH Utilisation de particules métalliques sphériques comme additifs de repérage par laser pour matériaux d'étanchéité, de fermeture ou de revêtement ou pour vernis
US11319131B2 (en) * 2012-11-15 2022-05-03 Bemis Company, Inc. Sterilization pouch
EP2813441A1 (fr) * 2013-06-11 2014-12-17 Mondi Consumer Packaging Technologies GmbH Emballage déchirable pour feuilles et utilisation d'un film coextrudé flexible à au moins trois couches pour la fabrication d'un emballage déchirable pour feuilles
DE102018215927B4 (de) * 2018-09-19 2022-02-17 Profol GmbH Folie zum Aufbringen auf einen Zielgegenstand

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DE102019218364A1 (de) 2021-05-27
WO2021105375A1 (fr) 2021-06-03
US20220411666A1 (en) 2022-12-29

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