ITPC20090007A1 - Saldatura termica in continuo. - Google Patents

Saldatura termica in continuo. Download PDF

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Publication number
ITPC20090007A1
ITPC20090007A1 IT000007A ITPC20090007A ITPC20090007A1 IT PC20090007 A1 ITPC20090007 A1 IT PC20090007A1 IT 000007 A IT000007 A IT 000007A IT PC20090007 A ITPC20090007 A IT PC20090007A IT PC20090007 A1 ITPC20090007 A1 IT PC20090007A1
Authority
IT
Italy
Prior art keywords
film
letter
wheels
indicated
upper sealing
Prior art date
Application number
IT000007A
Other languages
English (en)
Inventor
Giuseppe Chiappini
Original Assignee
Cg Project Soc Coop
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 Cg Project Soc Coop filed Critical Cg Project Soc Coop
Priority to IT000007A priority Critical patent/ITPC20090007A1/it
Priority to ITPC2010A000017A priority patent/IT1401704B1/it
Priority to EP20100169302 priority patent/EP2277684A1/en
Publication of ITPC20090007A1 publication Critical patent/ITPC20090007A1/it

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
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/81—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps
    • B29C66/814—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps
    • B29C66/8145—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the constructional aspects of the pressing elements, e.g. of the welding jaws or clamps
    • B29C66/81457—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the constructional aspects of the pressing elements, e.g. of the welding jaws or clamps comprising a block or layer of deformable material, e.g. sponge, foam, rubber
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • 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
    • B29C66/03—After-treatments in the joint area
    • B29C66/034—Thermal after-treatments
    • B29C66/0342—Cooling, e.g. transporting through welding and cooling zone
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/11—Joint cross-sections comprising a single joint-segment, i.e. one of the parts to be joined comprising a single joint-segment in the joint cross-section
    • B29C66/112—Single lapped joints
    • B29C66/1122—Single lap to lap joints, i.e. overlap joints
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/20—Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines
    • B29C66/23—Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines said joint lines being multiple and parallel or being in the form of tessellations
    • B29C66/232—Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines said joint lines being multiple and parallel or being in the form of tessellations said joint lines being multiple and parallel, i.e. the joint being formed by several parallel joint lines
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/344—Stretching or tensioning the joint area during joining
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/40—General aspects of joining substantially flat articles, e.g. plates, sheets or web-like materials; Making flat seams in tubular or hollow articles; Joining single elements to substantially flat surfaces
    • B29C66/41—Joining substantially flat articles ; Making flat seams in tubular or hollow articles
    • B29C66/43—Joining a relatively small portion of the surface of said articles
    • B29C66/432—Joining a relatively small portion of the surface of said articles for making tubular articles or closed loops, e.g. by joining several sheets ; for making hollow articles or hollow preforms
    • 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
    • B29C66/74—Joining plastics material to non-plastics material
    • B29C66/748—Joining plastics material to non-plastics material to natural products or their composites, not provided for in groups B29C66/742 - B29C66/746
    • B29C66/7486—Paper, e.g. cardboard
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/81—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps
    • B29C66/812—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the composition, by the structure, by the intensive physical properties or by the optical properties of the material constituting the pressing elements, e.g. constituting the welding jaws or clamps
    • B29C66/8126—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the composition, by the structure, by the intensive physical properties or by the optical properties of the material constituting the pressing elements, e.g. constituting the welding jaws or clamps characterised by the intensive physical properties or by the optical properties of the material constituting the pressing elements, e.g. constituting the welding jaws or clamps
    • B29C66/81264—Mechanical properties, e.g. hardness
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/81—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps
    • B29C66/814—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps
    • B29C66/8145—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the constructional aspects of the pressing elements, e.g. of the welding jaws or clamps
    • B29C66/81463—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the constructional aspects of the pressing elements, e.g. of the welding jaws or clamps comprising a plurality of single pressing elements, e.g. a plurality of sonotrodes, or comprising a plurality of single counter-pressing elements, e.g. a plurality of anvils, said plurality of said single elements being suitable for making a single 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
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/81—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps
    • B29C66/816—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the mounting of the pressing elements, e.g. of the welding jaws or clamps
    • B29C66/8167—Quick change joining tools or surfaces
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/81—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps
    • B29C66/816—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the mounting of the pressing elements, e.g. of the welding jaws or clamps
    • B29C66/8169—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the mounting of the pressing elements, e.g. of the welding jaws or clamps the mounting of said pressing elements being laterally movable, e.g. adjustable
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/81—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps
    • B29C66/818—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the cooling constructional aspects, or by the thermal or electrical insulating or conducting constructional aspects of the welding jaws or of the clamps ; comprising means for compensating for the thermal expansion of the welding jaws or of the clamps
    • B29C66/8181—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the cooling constructional aspects, or by the thermal or electrical insulating or conducting constructional aspects of the welding jaws or of the clamps ; comprising means for compensating for the thermal expansion of the welding jaws or of the clamps characterised by the cooling constructional aspects
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/83—General aspects of machine operations or constructions and parts thereof characterised by the movement of the joining or pressing tools
    • B29C66/834—General aspects of machine operations or constructions and parts thereof characterised by the movement of the joining or pressing tools moving with the parts to be joined
    • B29C66/8341—Roller, cylinder or drum types; Band or belt types; Ball types
    • B29C66/83411—Roller, cylinder or drum types
    • B29C66/83413—Roller, cylinder or drum types cooperating rollers, cylinders or drums
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/83—General aspects of machine operations or constructions and parts thereof characterised by the movement of the joining or pressing tools
    • B29C66/834—General aspects of machine operations or constructions and parts thereof characterised by the movement of the joining or pressing tools moving with the parts to be joined
    • B29C66/8341—Roller, cylinder or drum types; Band or belt types; Ball types
    • B29C66/83411—Roller, cylinder or drum types
    • B29C66/83415—Roller, cylinder or drum types the contact angle between said rollers, cylinders or drums and said parts to be joined being a non-zero angle
    • 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
    • B29C66/841—Machines or tools adaptable for making articles of different dimensions or shapes or for making joints of different dimensions
    • B29C66/8412—Machines or tools adaptable for making articles of different dimensions or shapes or for making joints of different dimensions of different length, width or height
    • B29C66/84121—Machines or tools adaptable for making articles of different dimensions or shapes or for making joints of different dimensions of different length, width or height of different width
    • 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
    • B29C66/843—Machines for making separate joints at the same time in different planes; Machines for making separate joints at the same time mounted in parallel or in series
    • B29C66/8432—Machines for making separate joints at the same time mounted in parallel or in series
    • 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
    • B29C66/87—Auxiliary operations or devices
    • B29C66/874—Safety measures or devices
    • B29C66/8744—Preventing overheating of the parts to be joined, e.g. if the machine stops or slows down
    • B29C66/87443—Preventing overheating of the parts to be joined, e.g. if the machine stops or slows down by withdrawing the heating 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
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/87—Auxiliary operations or devices
    • B29C66/876—Maintenance or cleaning
    • 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
    • B29C66/912—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by measuring the temperature, the heat or the thermal flux
    • B29C66/9121—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by measuring the temperature, the heat or the thermal flux by measuring the temperature
    • B29C66/91211—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by measuring the temperature, the heat or the thermal flux by measuring the temperature with special temperature measurement means or methods
    • B29C66/91216—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by measuring the temperature, the heat or the thermal flux by measuring the temperature with special temperature measurement means or methods enabling contactless temperature measurements, e.g. using a pyrometer
    • 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
    • B29C66/912—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by measuring the temperature, the heat or the thermal flux
    • B29C66/9121—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by measuring the temperature, the heat or the thermal flux by measuring the temperature
    • B29C66/91231—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by measuring the temperature, the heat or the thermal flux by measuring the temperature of the joining tool
    • 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
    • B29C66/914—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux
    • B29C66/9141—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux by controlling or regulating the temperature
    • B29C66/91421—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux by controlling or regulating the temperature of the joining tools
    • B29C66/91423—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux by controlling or regulating the temperature of the joining tools using joining tools having different temperature zones or using several joining tools with different temperatures
    • 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
    • B29C66/914—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux
    • B29C66/9141—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux by controlling or regulating the temperature
    • B29C66/91431—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux by controlling or regulating the temperature the temperature being kept constant over time
    • 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
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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Composite Materials (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)

Description

DESCRIZIONE dell’invenzione avente per TITOLO:
“SALDATURA TERMICA IN CONTINUO”,
Trattasi di un sistema di saldatura longitudinale in continuo tra carta e materiale plastico PP-PPT , per la produzione di rotoli destinati ad uso medicale. Si tratta di una saldatura termica che non prevede l'apporto dì collanti e che garantisce la “pelabiltà” dei materiali di differente composizione interessati dal processo proprio come richiesto dalle disposizioni relative al medicale.
(Ad oggi la saldatura di questi tubolari avviene attraverso l’utilizzo di barre riscaldate a pressione pneumatica e a materiale fermo. Questo crea sovrapposizione di saldatura sul materiale di circa 1 cm e ne provoca la rottura anziché la “pelabilità”, indispensabile nel settore ospedaliero).
I due materiali, Carta e PP-PPT, arrivano a questo gruppo preformati a seconda delle necessità dell’utilizzatore, seguendo percorsi distinti.
L’ingresso della linea Carta nel gruppo di saldatura in continuo è indicato con la lettera “A” sullo schema 1 allegato.
L’ingresso della linea PP-PPT nel gruppo di saldatura in continuo è indicato con la lettera “B” sullo schema 1 allegato.
La linea Carta attraversa la predisposta zona di preriscaldo indicata con la lettera “D" nello schema 1 allegato. Composta da due rulli rivestiti con gomma siliconica, ognuno alloggia le resistenze per il riscaldamento e la termocoppia per la rilevazione della temperatura. Il pre riscaldo è necessario per preparare film cartaceo alia saldatura.
La linea PP-PPT attraversa la predisposta zona di preriscaldo indicata con la lettera “C” nello schema 1 allegato. Composta da due rulli rivestiti con gomma siliconica, ognuno alloggia le resistenze per il riscaldamento e la termocoppia per la rilevazione della temperatura. Il pre riscaldo è necessario per preparare il film plastico alla saldatura.
Dopo il preriscaldo i due film, guidati da rulli folli, sì sovrappongono nella zona indicata con la lettera Έ” sullo schema 1 allegato.
Una volta sovrapposti i materiali passano attraverso un opportuno dispositivo che consente ai film di rimanere a contatto con le ruote saldanti superiori per 180° (semiperimetro), completando la saldatura degli stessi.
Questo dispositivo, indicato con la lettera “F”, sugli schemi 1 e 2 allegati, è composto da una serie dì rulli folli montati su una adeguata struttura e permette due funzioni essenziali: la prima durante la fase di saldatura, quando mantiene i film sovrapposti perfettamente in tensione guidandoli correttamente lungo il perimetro delle ruote saldanti superiori (zona in cui avviene la saldatura).
La seconda quando allontana il film accoppiato dalle ruote saldanti superiori durante l’arresto macchina. La struttura sagomata di cui sopra infatti è montata su guide lineari e movimentata tramite attuatori pneumatici orizzontali. Quando venga richiesto l’arresto macchina, allontana il film accoppiato al fine di evitare inopportune bruciature in quel tratto a contatto con la ruota saldante superiore (Vedi schema n° 2 allegato).
Il film accoppiato come precedentemente detto si salda percorrendo un semiperimetro della ruota saldante superiore, indicata con la lettera Ή” nello schema 1 allegato. Si tratta di una ruota rettificata in lega di alluminio speciale, che alloggia una resistenza sagomata per il riscaldo della stessa. La temperatura è controllata tramite sensori ad infrarossi (indicati con la lettera “L" nello schema 1 allegato) su sei punti del perimetro. Il profilo saldante della ruota superiore viene lavorato in funzione delle esigenze finali.
Sull’albero portante possono esserci più ruote (vedi schema allegato n° 3) per consentire la produzione di formati diversi dalla stessa bobina. Ciascuna ruota avrà identiche caratteristiche essendo montata sull'albero portante tramite mozzi isolanti ed il controllo della temperatura avverrà sempre in modo indipendente su sei punti di ogni singola ruota.
Le ruote sull’albero possono essere calde (indicate con la lettera “R” sullo schema allegato n° 3) o fredde (indicate con la lettera “P” sullo schema allegato n° 3). Sono intervallate tramite distanziali quando la distanza tra esse è minima, oppure da ruote gommate per il sostegno del film quando la distanza è consistente (indicate con la lettera "Q” sullo schema allegato n° 3).
L’albero di alloggiamento per le ruote saldanti superiori è fissato a slitte meccaniche movimentate tramite attuatori pneumatici verticali (vedi dispositivo indicato con la lettera “G” negli schemi 1 e 2 allegati). Quando venga richiesto l'arresto macchina, l’albero si allontana verticalmente dal rullo di contrasto, lasciando libero il film accoppiato. Questa funzione agisce in combinazione al movimento orizzontale del dispositivo indicato con “F” negli schemi te 2 allegati, al fine di evitare inopportune bruciature al film.
Il contrasto delle suddette ruote saldanti è dato da un rullo gommato con una speciale gomma (indicato con la lettera “M” nello schema 1 allegato), avente diametro inferiore rispetto alle ruote. Il rullo determina la perfetta realizzazione del profilo di saldatura stabilito.
Il riscaldo del rullo avviene attraverso 8 resistenze alloggiate nel rullo stesso. La pressione di saldatura tra le ruote saldanti e il rullo gommato è regolabile meccanicamente. La massima pressione di saldatura è di 0.20 mm (dato come compenetrazione delle ruote saldanti nel rullo gommato). Anche sul rullo la rilevazione della temperatura avviene tramite sensore ad infrarossi (indicato con la lettera Ί” nello schema 1 allegato) ed in modo indipendente.
Il tubolare saldato entra quindi nella zona di raffreddamento, indicata con la lettera “N” nello schema 1 allegato. Il raffreddamento del materiale avviene mediante due rulli gommati per evitare la formazione di condensa e raffreddat tramite apposito dispositivo a ricircolo d’acqua.
Indicato con la lettera Ό” è infine l’uscita del tubolare saldato finito.

Claims (4)

  1. RIVENDICAZIONI 1) Le ruote saldanti (indicate con la lettera “H” sullo schema 1 allegato) che girando sul proprio asse saldano i due film, Carta e PP-PPT, rimanendo a contatto con gli stessi per 180° (semiperimetro), consentendo una saldatura continua, priva cioè di interruzioni e/o sovrapposizioni.
  2. 2) La resistenza sagomata per il riscaldo indipendente di ogni singola ruota saldante, che permette di utilizzare la combinazione di ruote calde e fredde sullo stesso asse, al fine di ottenere le più svariate combinazioni senza che si debbano rimuovere quelle inutilizzate (fredde).
  3. 3) Il dispositivo di controllo della temperatura su 6 punti di ogni singola ruota saldante, indipendente per ogni ruota inserita nei sistema di saldatura in continuo.
  4. 4) Il dispositivo indicato con la lettera “F” sugli schemi 1 e 2 allegati che mantiene i film sovrapposti perfettamente in tensione, guidandoli correttamente lungo il perimetro delle ruote saldanti superiori. Tale dispositivo consente ai film di rimanere a contatto COTI le ruote saldanti superiori per 180° (semiperimetro), completando la saldatura degli stessi e allontana il film accoppiato dalle ruote saldanti superiori durante l’arresto macchina tramite attuatori pneumatici orizzontali al fine di evitare inopportune bruciature. 5) fi dispositivo indicato con la lettera “G" sugli schemi 1 e 2 allegati che allontana verticalmente l’albero porta ruote saldanti superiori dal rullo di contrasto, lasciando libero il film accoppiato. Questa dispositivo agisce in combinazione al movimento orizzontale di quello indicato con “F” negli schemi 1e 2 allegati, al fine di evitare inopportune bruciature al film accoppiato. 6) La disposizione delle apparecchiature die interessano il processo può variare in termini dimensionali, ma non come disposizione. 1 film da saldare devo sempre seguire il seguente giro: pre riscaldo film Carta; pre riscaldo film PP-PPT; sovrapposizione dei film; ingresso nel dispositivo indicato con la lettera “F” sugli schemi 1 e 2 allegati; contatto con le ruote saldanti superiori contrasto a pressione calibrata con il rullo saldante inferiore: raffreddamento. 7) Il film a contatto diretto con le ruote saldanti superiori deve necessariamente essere il film Carta.
IT000007A 2009-07-13 2009-07-13 Saldatura termica in continuo. ITPC20090007A1 (it)

Priority Applications (3)

Application Number Priority Date Filing Date Title
IT000007A ITPC20090007A1 (it) 2009-07-13 2009-07-13 Saldatura termica in continuo.
ITPC2010A000017A IT1401704B1 (it) 2009-07-13 2010-07-12 Dispositivo per la saldatura in continuo di film e relativo metodo
EP20100169302 EP2277684A1 (en) 2009-07-13 2010-07-12 Device and method for welding films in continuous

Applications Claiming Priority (1)

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IT000007A ITPC20090007A1 (it) 2009-07-13 2009-07-13 Saldatura termica in continuo.

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ITPC2010A000017A IT1401704B1 (it) 2009-07-13 2010-07-12 Dispositivo per la saldatura in continuo di film e relativo metodo

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FR2969942A1 (fr) * 2011-01-05 2012-07-06 Mv 2 Enclume pour dispositif de soudage par ultrasons comprenant au moins une sonotrode
CN112223759B (zh) * 2020-10-09 2022-03-25 山东亚新塑料包装有限公司 一种塑料膜制备方法
CN112497775B (zh) * 2020-11-12 2023-01-03 浙江中野包装科技有限公司 一种便于对薄膜限位的塑料薄膜生产用粘膜机
CN115284620B (zh) * 2022-10-09 2023-03-24 八斗新材料(德州)有限公司 一种土工膜焊接方法及焊接机

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US2983306A (en) * 1959-02-27 1961-05-09 Joseph Y Resnick Apparatus for continuously sealing thermoplastic materials
JPS4955770A (it) * 1972-10-02 1974-05-30
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IT1401704B1 (it) 2013-08-02
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