RS65634B1 - Postupak za proizvodnju kese sa umecima i poboljšana kesa sa umecima - Google Patents

Postupak za proizvodnju kese sa umecima i poboljšana kesa sa umecima

Info

Publication number
RS65634B1
RS65634B1 RS20240702A RSP20240702A RS65634B1 RS 65634 B1 RS65634 B1 RS 65634B1 RS 20240702 A RS20240702 A RS 20240702A RS P20240702 A RSP20240702 A RS P20240702A RS 65634 B1 RS65634 B1 RS 65634B1
Authority
RS
Serbia
Prior art keywords
bag
outer side
inserts
welding
front wall
Prior art date
Application number
RS20240702A
Other languages
English (en)
Inventor
Eric Valette
Original Assignee
Coveris Flexibles France
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=72266360&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=RS65634(B1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Coveris Flexibles France filed Critical Coveris Flexibles France
Publication of RS65634B1 publication Critical patent/RS65634B1/sr

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—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
    • 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
    • B29C65/48—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding
    • B29C65/50—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding using adhesive tape, e.g. thermoplastic tape; using threads or the like
    • B29C65/5057—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding using adhesive tape, e.g. thermoplastic tape; using threads or the like positioned between 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
    • B29C65/48—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding
    • B29C65/50—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding using adhesive tape, e.g. thermoplastic tape; using threads or the like
    • B29C65/5064—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding using adhesive tape, e.g. thermoplastic tape; using threads or the like of particular form, e.g. being C-shaped, T-shaped
    • B29C65/5071—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding using adhesive tape, e.g. thermoplastic tape; using threads or the like of particular form, e.g. being C-shaped, T-shaped and being composed by one single element
    • 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
    • B29C66/004—Preventing sticking together, e.g. of some areas 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
    • B29C66/006—Preventing damaging, e.g. 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
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/11—Joint cross-sections comprising a single joint-segment, i.e. one of the parts to be joined comprising a single joint-segment in the joint cross-section
    • B29C66/112—Single lapped joints
    • B29C66/1122—Single lap to lap joints, i.e. overlap joints
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/13—Single flanged joints; Fin-type joints; Single hem joints; Edge joints; Interpenetrating fingered joints; Other specific particular designs of joint cross-sections not provided for in groups B29C66/11 - B29C66/12
    • B29C66/135—Single hemmed joints, i.e. one of the parts to be joined being hemmed in the joint area
    • B29C66/1352—Single hem to hem joints
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/40—General aspects of joining substantially flat articles, e.g. plates, sheets or web-like materials; Making flat seams in tubular or hollow articles; Joining single elements to substantially flat surfaces
    • B29C66/41—Joining substantially flat articles ; Making flat seams in tubular or hollow articles
    • B29C66/43—Joining a relatively small portion of the surface of said articles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/40—General aspects of joining substantially flat articles, e.g. plates, sheets or web-like materials; Making flat seams in tubular or hollow articles; Joining single elements to substantially flat surfaces
    • B29C66/41—Joining substantially flat articles ; Making flat seams in tubular or hollow articles
    • B29C66/43—Joining a relatively small portion of the surface of said articles
    • B29C66/431—Joining the articles to themselves
    • B29C66/4312—Joining the articles to themselves for making flat seams in tubular or hollow articles, e.g. transversal seams
    • B29C66/43121—Closing the ends of tubular or hollow single articles, e.g. closing the ends of bags
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—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
    • B29C66/7311—Thermal properties
    • 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
    • B29C66/7311—Thermal properties
    • B29C66/73115—Melting point
    • 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
    • B29C66/80—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
    • 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
    • B29C66/90—Measuring or controlling the joining process
    • B29C66/91—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux
    • B29C66/919—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux characterised by specific temperature, heat or thermal flux values or ranges
    • B29C66/9192—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux characterised by specific temperature, heat or thermal flux values or ranges in explicit relation to another variable, e.g. temperature diagrams
    • B29C66/91921—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux characterised by specific temperature, heat or thermal flux values or ranges in explicit relation to another variable, e.g. temperature diagrams in explicit relation to another temperature, e.g. to the softening temperature or softening point, to the thermal degradation temperature or to the ambient temperature
    • 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
    • B29C66/90—Measuring or controlling the joining process
    • B29C66/91—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux
    • B29C66/919—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux characterised by specific temperature, heat or thermal flux values or ranges
    • B29C66/9192—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux characterised by specific temperature, heat or thermal flux values or ranges in explicit relation to another variable, e.g. temperature diagrams
    • B29C66/91921—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux characterised by specific temperature, heat or thermal flux values or ranges in explicit relation to another variable, e.g. temperature diagrams in explicit relation to another temperature, e.g. to the softening temperature or softening point, to the thermal degradation temperature or to the ambient temperature
    • B29C66/91931—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux characterised by specific temperature, heat or thermal flux values or ranges in explicit relation to another variable, e.g. temperature diagrams in explicit relation to another temperature, e.g. to the softening temperature or softening point, to the thermal degradation temperature or to the ambient temperature in explicit relation to the fusion temperature or melting point of the material of one of the parts to be joined
    • B29C66/91933—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux characterised by specific temperature, heat or thermal flux values or ranges in explicit relation to another variable, e.g. temperature diagrams in explicit relation to another temperature, e.g. to the softening temperature or softening point, to the thermal degradation temperature or to the ambient temperature in explicit relation to the fusion temperature or melting point of the material of one of the parts to be joined higher than said fusion temperature
    • 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
    • B65D31/00—Bags or like containers made of paper and having structural provision for thickness of contents
    • B65D31/02—Bags or like containers made of paper and having structural provision for thickness of contents with laminated 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
    • B65D31/00—Bags or like containers made of paper and having structural provision for thickness of contents
    • B65D31/10—Bags or like containers made of paper and having structural provision for thickness of contents with gusseted sides
    • 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
    • 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
    • B29C66/7311—Thermal properties
    • B29C66/73115—Melting point
    • B29C66/73116—Melting point of different melting point, i.e. the melting point of one of the parts to be joined being different from the melting point of the other part
    • 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
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Description

Opis
Oblast tehnike
[0001] Pronalazak se odnosi na oblast tehnike plastičnih ambalažnih kesa, kao što su na primer ambalažne kese za prehrambene proizvode.
[0002] Tačnije, pronalazak nalazi povoljnu primenu u oblasti kesa napravljenih od fleksibilnog plastičnog materijala, posebno dobijenih od trake filma debljine manje od približno 200 µm.
[0003] Ova vrsta kesa sadrži najmanje, i na dobro poznat način, prednji zid i zadnji zid čije su bočne ivice eventualno povezane umecima, dno i otvor za punjenje.
[0004] Pronalazak se posebno odnosi na postupak za proizvodnju ambalažne kese ovog tipa, kao i na poboljšanu ambalažnu kesu.
Stanje tehnike
[0005] Postupak za proizvodnju ambalažne kese koja sadrži najmanje prednji zid i zadnji zid, opciono povezane umecima, dno i otvor za punjenje poznat je iz stanja tehnike.
[0006] Uopšteno govoreći, kesa je napravljena od najmanje jednog plastičnog filma sačinjenog od kompleksa OPP (orijentisani polipropilen)/PE (polietilen) ili PET (polietilen tereftalat)/PE, pri čemu je u oba slučaja PE postavljen tako da formira unutrašnju stranu filma, a samim tim i unutrašnjost kese, a PET ili OPP je postavljen tako da formira spoljašnju stranu filma, a samim tim i spoljašnjost kese.
[0007] Zatim, i dalje na konvencionalan način, postupak za proizvodnju kese uključuje obrazovanje najmanje jedne linije zavarivanja na najmanje jednom od prednjeg ili zadnjeg zida kese.
[0008] U stanju tehnike, ova linija zavarivanja se obrazuje pomoću uređaja za vruće utiskivanje koji se primenjuje na spoljašnju stranu i ima tendenciju da vizuelno naruši pomenutu spoljašnju stranu.
[0009] Osim toga, nedostatak kesa napravljenih od kompleksa OPP/PE ili PET/PE predstavlja to što ih je teško reciklirati korišćenjem tehnika mehaničke reciklaže.
[0010] Dokument EP0135649 opisuje postupak za proizvodnju ambalažne kese čije recikliranje može da se olakša.
Izlaganje pronalaska
[0011] Jedan od ciljeva pronalaska je stoga otklanjanje gore navedenih problema obezbeđivanjem postupka za proizvodnju ambalažne kese, kao i ambalažne kese čiji vizuelni i estetski kvaliteti nisu narušeni nakon različitih postupaka zavarivanja koji se izvode da bi se formirala kesa.
[0012] Drugi cilj je da se obezbedi takva kesa čija je mehanička reciklaža olakšana.
[0013] Da bi se rešili gore navedeni problemi, razvijen je proizvodni postupak u skladu sa predmetom 1. patentnog zahteva.
[0014] Iz gore navedenog, postupak za proizvodnju je jednostavan, linije zavarivanja su napravljene delovanjem samo na spoljnu stranu filma, bez narušavanja estetike kese.
[0015] Podnosilac zahteva je odabrao ovaj temperaturni opseg jer, pored gore pomenute prednosti, omogućava odabir materijala za spoljašnju i unutrašnju stranu filma koji imaju relativno slično i uniformno ponašanje. Iz toga sledi da kompatibilnost između materijala olakšava mehaničko recikliranje kese. Pored toga, unutrašnja i spoljašnja strana kese su prilično slične, što poboljšava opštu estetiku kese.
[0016] Prema pronalasku, plastični film je višeslojan u obliku kompleksa, a da bi se omogućila reciklaža plastičnog filma, napravljen je od jednog materijala. U ovoj konfiguraciji, estetika je optimalna, a mehaničko recikliranje može da se postigne na jednostavan način.
[0017] Postoji nekoliko tehnika za podešavanje temperature omekšavanja spoljašnje strane i temperature topljenja unutrašnje strane tako da njihova razlika bude između 20 °C i 60 °C. Na primer, gustina unutrašnje strane može da bude niža od gustine spoljašnje strane. Na primer, gustina unutrašnje strane može da bude između 0.8 g/cm3 i 0.92 g/cm3, isključujući aditiv, a gustina spoljašnje strane može da bude između 0.92 g/cm3 i 0.97 g/cm3.
[0018] Kada se govori o „spoljašnjoj strani“ ili „unutrašnjoj strani“ kod filma sačinjenog od jednog sloja, misli se na maksimalno 50% njegove debljine, poželjno 15%.
[0019] Da bi se razlikovale gustine između spoljašnje i unutrašnje strane višeslojnog filma od jednog materijala, moguće je delovati posebno na istezanje materijala. Drugim rečima, spoljašnja strana može da bude napravljena od polimernog materijala rastegnutog monoaksijalno ili biaksijalno, da bi se povećala njegova gustina.
[0020] Istezanje polietilena znači da je potrebno više energije da bi se spoljašnji sloj omekšao i konačno rastopio. Zbog toga je potrebno duže vreme topljenja i/ili viša temperatura da bi se postiglo topljenje navedenog spoljašnjeg sloja, što mu omogućava optimalno podnošenje postupaka zavarivanja, bez degradacije.
[0021] U skladu sa posebnim primerima izvođenja, temperatura omekšavanja spoljašnje strane je između 120 °C i 140 °C, poželjno 130 °C, temperatura topljenja unutrašnje strane je poželjno između 80 °C i 100 °C, poželjno 90 °C.
[0022] U posebnom primeru izvođenja postupka, i tokom formiranja kese, umeci mogu da se, na poznat način, uzdužno presaviju i ubace između prednjeg i zadnjeg zida kese. U drugoj konfiguraciji, umeci mogu da se pričvrste. Linije zavarivanja koje dakle omogućavaju da se umeci pričvrste na prednji i zadnji zid se tada obrazuju duž uzdužnih ivica umetaka, koje naležu jedna na drugu, pomoću uređaja za vruće utiskivanje koji deluje samo na prednji i/ili zadnji zid.
[0023] U ovoj konfiguraciji, a da bi se izbegao bilo kakav rizik od narušavanja spoljašnje strane kese tokom zavarivanja umetaka, postupak prema pronalasku obezbeđuje da traka od materijala sa termoizolacionim svojstvima, na primer napravljena od politetrafluoroetilena, može da se postavi između uzdužnih ivica savijenih umetka tako da, tokom postupka zavarivanja, svaka od pomenutih uzdužnih ivica leži na traci, konkretno na obe strane trake.
[0024] Pronalazak se takođe odnosi na ambalažnu kesu prema 9. patentnom zahtevu.
Opis slika
[0025] Ostale prednosti i karakteristike pronalaska će postati jasnije iz opisa koji sledi, datog kao neograničavajući primer, polazeći od priloženih slika na kojima:
[Sl. 1] je šematski prikaz koji ilustruje izgled kese prema pronalasku u perspektivi.
[Sl. 2] je šematski prikaz koji ilustruje jednoslojni film po čijoj debljini postoji gradijent gustine.
[Sl. 3] je šematski prikaz koji ilustruje višeslojni film čija unutrašnja strana ima manju gustinu od spoljašnje strane.
[Sl. 4] je šematski prikaz koji ilustruje zavarivanje uzdužnih ivica umetka.
[Sl. 5] je šematski prikaz sličan onom na slici 4, gde je traka materijala sa termoizolacionim svojstvima postavljena između uzdužnih ivica umetka presavijenih jedne preko druge.
Detaljan opis pronalaska
[0026] Pozivajući se na sliku 1, pronalazak se odnosi na postupak za proizvodnju kese (1) tipa koji sadrži, na poznat način, najmanje prednji zid (2) i zadnji zid (3), čije bočne ivice su eventualno povezane umecima (4), dno (5) i otvor (6) za punjenje.
[0027] Postupak koji omogućava oblikovanje kese (1) kao takav je poznat iz stanja tehnike i može se izvesti na nekoliko mogućih načina. On neće biti detaljnije opisan.
[0028] Pozivajući se na sliku 3, pronalazak se posebno fokusira na činjenicu da je kesa (1) napravljena od plastičnog filma (7) koji ima unutrašnju stranu (8) koja je predviđena za postavljanje u unutrašnjosti kese (1) i spoljašnju stranu (9) namenjenu za postavljanje na spoljašnjosti kese (1), čija razlika između temperature omekšavanja spoljašnje strane (9) i temperature topljenja unutrašnje strane (8) iznosi između 20 °C i 60 °C.
[0029] Dakle, kada je potrebno obrazovati liniju zavarivanja tokom postupka proizvodnje kese (1), na primer da bi se zatvorilo dno (5) i/ili otvor (6) kese (1), i/ili učvrstile ivice umetaka (4), i/ili da bi se pričvrstili umeci (4) za prednji zid (2) i zadnji zid (3), pomenuta linija zavarivanja se obrazuje na difuznoj temperaturi zavarivanja u rasponu između temperature omekšavanja spoljašnje strane (9) i temperature topljenja unutrašnje strane (8).
[0030] Pri tome se zavarivanje vrši topljenjem samo unutrašnje strane (8) filma (7), bez omekšavanja ili narušavanja estetike spoljašnje površine (9).
[0031] Linija zavarivanja se obrazuje bilo kojom odgovarajućom dobro poznatom tehnikom, a posebno pomoću uređaja (10) za toplo utiskivanje. Uređaj (10) za toplo utiskivanje se koristi tako da je vreme kontakta na spoljnoj strani (9) filma (7) kraće od 1 s, i na primer između 100 ms i 600 ms. Difuzna temperatura zavarivanja se razlikuje od temperature podešavanja uređaja (10) za toplo utiskivanje. Na primer, uređaj (10) se može podesiti na temperaturu od 150 °C i, sa vremenom kontakta, inercijom i gubicima toplote, difuzna temperatura zavarivanja može da bude 115 °C.
[0032] Pozivajući se na sliku 2, i prema jednom primeru izvođenja koji nije obuhvaćen zahtevima, plastični film (7) je sačinjen od jednog sloja.
[0033] U ovoj konfiguraciji, kada se govori o spoljašnjoj strani (9) ili unutrašnjoj strani (8), misli se, za svaku stranu, na maksimalno 50% debljine filma (7).
[0034] Da bi se dobila razlika između temperature omekšavanja spoljašnje strane (9) i temperature topljenja unutrašnje strane (8) između 20 °C i 60 °C, film (7) sadrži unutrašnju stranu (8) čija je gustina na primer manja od gustine spoljašnje strane (9). Drugim rečima, po debljini filma (7) može da postoji gradijent gustine, pri čemu se gustina povećava od unutrašnje strane (8) ka spoljašnjoj strani (9).
[0035] Pozivajući se na sliku 3, a prema pronalasku, plastični film (7) koji čini kesu (1) je u obliku kompleksa, dakle višeslojan.
[0036] Prema pronalasku, da bi imao različite gustine, ali da bi istovremeno recikliranje filma (7) bilo moguće, film (7) je višeslojan i sačinjen od jednog materijala. Da bi se postigla željena razlika u gustini, materijal koji se koristi za formiranje spoljašnje strane (9) može da se istegne monoaksijalno ili biaksijalno, na primer u odnosu između 3:1 i 10:1, kako bi se povećala njegova gustina u poređenju sa istim materijalima, nerastegnutim, koji se koriste za konstituisanje unutrašnje strane (8). Film može na primer da predstavlja kompleks MDOPE (polietilen orijentisan u mašinskom pravcu)/PE ili BOPE (biaksijalno orijentisani polietilen)/PE.
[0037] Naravno, rastegnuti materijal može da se koristi za formiranje spoljašnje strane (9) filma (7), a drugačiji nerastegnuti materijal može da se koristi za formiranje unutrašnjeg sloja (8) filma (7).
[0038] U praksi, temperatura omekšavanja spoljašnje strane (9) je između 120 °C i 140 °C, poželjno 130 °C, a temperatura topljenja unutrašnje strane (8) je između 80 °C i 100 °C, poželjno 90 °C. U slučaju, na primer, temperature omekšavanja spoljašnje strane (9) od 130 °C, i temperature topljenja unutrašnje strane (8) poželjno 90 °C, difuzna temperatura zavarivanja može da bude 115 °C.
[0039] Pozivajući se na slike 4 i 5, pronalazak stoga predstavlja povoljnu primenu kada linije zavarivanja omogućavaju pričvršćivanje umetaka (4) na prednji zid (2) i zadnji zid (3).
[0040] Zaista, u ovoj konfiguraciji, i tokom formiranja kese (1), umeci (4) se uzdužno presavijaju i ubacuju se između prednjeg zida (2) i zadnjeg zida (3), linije zavarivanja za fiksiranje umetaka (4) na prednjem zidu (2) i zadnjem zidu (3) se izrađuju samo po uzdužnim ivicama umetaka (4), čije se ivice naslanjaju jedna na drugu, pomoću uređaja (10) za toplo utiskivanje koji deluje samo na prednji zid (2) i/ili zadnji zid (3), videti sliku 4.
[0041] Zavarivanje zatim topi unutrašnju stranu (8) filma (7) da bi se fiksirali umeci (4) i ne oštećuje spoljašnju stranu (9). Isto važi i za sve druge vrste zavarivanja, na primer one koje omogućavaju učvršćivanje uzdužnih ivica umetaka (4).
[0042] Pozivajući se na sliku 5, a da bi se optimalno garantovao integritet spoljašnje strane (9) filma (7), pronalazak obezbeđuje, kada je reč o fiksiranju ili učvršćivanju umetaka (4), mogućnost da se između uzdužnih ivica presavijenih umetaka (4) eventualno postavi traka (11) od materijala sa termoizolacionim svojstvom, na primer traka (11) od politetrafluoroetilena, tako da se u toku zavarivanja svaka uzdužna ivica oslanja na traku, konkretno na obe strane trake (11), tako da one ne budu u kontaktu i ne budu međusobno zavarene.
[0043] Pronalazak tako omogućava dobijanje ambalažne kese (1) koja sadrži najmanje prednji zid (2) i zadnji zid (3), čije su bočne ivice opciono povezane umecima (4), dno (5) i otvor (6) za punjenje, napravljene od plastičnog filma (7) koji je višeslojan i sačinjen od jednog materijala, koja ima unutrašnju stranu (8) postavljenu u unutrašnjosti kese (1) i spoljašnju stranu (9) postavljenu na spoljašnjosti kese (1), čija razlika između temperature omekšavanja spoljašnje strane (9) i temperature topljenja unutrašnje strane (8) iznosi između 20 °C i 60 °C, a poželjno je

Claims (9)

Patentni zahtevi
1. Postupak za proizvodnju ambalažne kese (1) koja sadrži najmanje prednji zid (2) i zadnji zid (3), opciono povezane umecima (4), dno (5) i otvor (6) za punjenje, pri čemu je kesa (1) napravljena od najmanje jednog plastičnog filma (7) koji ima unutrašnju stranu (8) namenjenu da se postavi u unutrašnjosti kese (1) i spoljašnju stranu (9) namenjenu da se postavi na spoljašnjosti kese (1), gde postupak podrazumeva obrazovanje najmanje jedne linije zavarivanja na najmanje jednom od prednjeg zida (2) ili zadnjeg zida (3), plastični film (7) je višeslojan, a razlika između temperature omekšavanja spoljašnje strane (9) i temperature topljenja unutrašnje strane (8) je u rasponu između 20 °C i 60 °C, tako da se linija zavarivanja obrazuje na difuznoj temperaturi zavarivanja u rasponu između temperature omekšavanja spoljašnje strane (9) i temperature topljenja unutrašnje strane (8), pomoću uređaja (10) za toplo utiskivanje koji se primenjuje na spoljašnju stranu (9), topljenjem unutrašnje strane (8) bez omekšavanja ili narušavanja spoljašnje strane (9), naznačen time što je plastični film (7) sačinjen od jednog materijala.
2. Postupak prema zahtevu 1, naznačen time što je gustina unutrašnje strane (8) manja od gustine spoljašnje strane (9).
3. Postupak prema jednom od prethodnih zahteva, naznačen time što je temperatura omekšavanja spoljašnje strane (9) između 120 °C i 140 °C, poželjno 130 °C.
4. Postupak prema jednom od prethodnih zahteva, naznačen time što je temperatura topljenja unutrašnje strane (8) između 80 °C i 100 °C, poželjno 90 °C.
5. Postupak prema jednom od prethodnih zahteva, naznačen time što je difuzna temperatura zavarivanja 115 °C.
6. Postupak prema jednom od prethodnih zahteva, naznačen time što linija/linije zavarivanja omogućava/omogućavaju zatvaranje dna (5) i/ili otvora (6) kese (1) i/ili učvršćivanje ivica umetaka (4) i/ili pričvršćivanje umetaka (4 ) na prednji zid (2) i zadnji zid (3).
7. Postupak prema jednom od prethodnih zahteva, naznačen time što se, prilikom formiranja kese (1), umeci (4) uzdužno presavijaju i ubacuju između prednjeg zida (2) i zadnjeg zida (3), linije zavarivanja koje omogućavaju pričvršćivanje umetaka (4) na prednji zid (2) i zadnji zid (3) se stvaraju duž uzdužnih ivica umetaka (4) koje leže jedna na drugoj, pomoću uređaja (10) za toplo utiskivanje koji deluje samo na prednji zid (2) i/ili zadnji zid (3).
8. Postupak prema zahtevu 7, naznačen time što se traka (11) materijala sa termoizolacionim svojstvima postavlja između presavijenih uzdužnih ivica umetaka (4) tako da, tokom postupka zavarivanja, svaka od pomenutih uzdužnih ivica naleže na traku (11).
9. Ambalažna kesa (1) koja sadrži najmanje prednji zid (2) i zadnji zid (3), opciono povezane umecima (4), dno (5) i otvor (6) za punjenje, pri čemu je kesa (1) napravljena od najmanje jednog višeslojnog plastičnog filma (7) koja ima unutrašnju stranu (8) postavljenu u unutrašnjosti kese (1) i spoljašnju stranu (9) postavljenu na spoljašnjosti kese (1), i gde je razlika između temperature omekšavanja spoljašnje strane (9) i temperatura topljenja unutrašnje strane (8) u rasponu između 20 °C i 60 °C, naznačena time što je plastični film (7) sačinjen od jednog materijala.
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