IL31136A - Jaws for clamping thermoplastic materials during thermowelding or cooling - Google Patents

Jaws for clamping thermoplastic materials during thermowelding or cooling

Info

Publication number
IL31136A
IL31136A IL31136A IL3113668A IL31136A IL 31136 A IL31136 A IL 31136A IL 31136 A IL31136 A IL 31136A IL 3113668 A IL3113668 A IL 3113668A IL 31136 A IL31136 A IL 31136A
Authority
IL
Israel
Prior art keywords
jaw
cooling
welded
portions
welding
Prior art date
Application number
IL31136A
Other versions
IL31136A0 (en
Original Assignee
Centra Anstalt
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 Centra Anstalt filed Critical Centra Anstalt
Publication of IL31136A0 publication Critical patent/IL31136A0/en
Publication of IL31136A publication Critical patent/IL31136A/en

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
    • B29C66/81461—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 being multi-lamellar or segmented, i.e. comprising a plurality of strips, plates or stacked elements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/18—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated tools
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/18—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated tools
    • B29C65/24—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated tools characterised by the means for heating the tool
    • B29C65/30—Electrical means
    • B29C65/305—Electrical means involving the use of cartridge heaters
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/03—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
    • B29C66/10—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
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/346—Making joints having variable thicknesses in the joint area, e.g. by using jaws having an adapted configuration
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/73—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset
    • B29C66/739—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset
    • B29C66/7392—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of at least one of the parts being a thermoplastic
    • B29C66/73921—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of at least one of the parts being a thermoplastic characterised by the materials of both parts being thermoplastics
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/81—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps
    • B29C66/812—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the composition, by the structure, by the intensive physical properties or by the optical properties of the material constituting the pressing elements, e.g. constituting the welding jaws or clamps
    • B29C66/8122—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the composition, by the structure, by the intensive physical properties or by the optical properties of the material constituting the pressing elements, e.g. constituting the welding jaws or clamps characterised by the composition of the material constituting the pressing elements, e.g. constituting the welding jaws or clamps
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/81—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps
    • B29C66/814—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps
    • B29C66/8141—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined
    • B29C66/81431—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined comprising a single cavity, e.g. a groove
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/81—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps
    • B29C66/814—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps
    • B29C66/8145—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the constructional aspects of the pressing elements, e.g. of the welding jaws or clamps
    • B29C66/81453—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 being made of flexible slats, flexible fins, flexible bristles or springs, e.g. coiled springs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/81—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps
    • B29C66/814—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps
    • B29C66/8145—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the constructional aspects of the pressing elements, e.g. of the welding jaws or clamps
    • B29C66/81457—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the constructional aspects of the pressing elements, e.g. of the welding jaws or clamps comprising a block or layer of deformable material, e.g. sponge, foam, rubber
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/81—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps
    • B29C66/816—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the mounting of the pressing elements, e.g. of the welding jaws or clamps
    • B29C66/8161—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the mounting of the pressing elements, e.g. of the welding jaws or clamps said pressing elements being supported or backed-up by springs or by resilient material
    • B29C66/81611—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the mounting of the pressing elements, e.g. of the welding jaws or clamps said pressing elements being supported or backed-up by springs or by resilient material by resilient material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/81—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps
    • B29C66/816—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the mounting of the pressing elements, e.g. of the welding jaws or clamps
    • B29C66/8167—Quick change joining tools or surfaces
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/81—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps
    • B29C66/818—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the cooling constructional aspects, or by the thermal or electrical insulating or conducting constructional aspects of the welding jaws or of the clamps ; comprising means for compensating for the thermal expansion of the welding jaws or of the clamps
    • B29C66/8181—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the cooling constructional aspects, or by the thermal or electrical insulating or conducting constructional aspects of the welding jaws or of the clamps ; comprising means for compensating for the thermal expansion of the welding jaws or of the clamps characterised by the cooling constructional aspects
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • 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
    • B29C66/91212—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 involving measurement means being part of the welding jaws, e.g. integrated in the welding jaws
    • 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
    • B29C66/004—Preventing sticking together, e.g. of some areas of the parts to be joined
    • B29C66/0042—Preventing sticking together, e.g. of some areas of the parts to be joined of the joining tool and the parts to be joined
    • B29C66/0044—Preventing sticking together, e.g. of some areas of the parts to be joined of the joining tool and the parts to be joined using a separating sheet, e.g. fixed on 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
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/83—General aspects of machine operations or constructions and parts thereof characterised by the movement of the joining or pressing tools
    • B29C66/832—Reciprocating joining or pressing tools
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/712—Containers; Packaging elements or accessories, Packages
    • B29L2031/7128—Bags, sacks, sachets
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B70/00—Making flexible containers, e.g. envelopes or bags
    • B31B70/60—Uniting opposed surfaces or edges; Taping
    • B31B70/64—Uniting opposed surfaces or edges; Taping by applying heat or pressure
    • B31B70/642—Uniting opposed surfaces or edges; Taping by applying heat or pressure using sealing jaws or sealing dies

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)

Abstract

1,246,653. Seaming non-metallic sheet material. CENTRA ANSTALT. 29 Nov., 1968 [11 July, 1968], No. 56716/68. Heading B5K. The material-contacting surface 51 of a jaw for welding portions or cooling previouslywelded portions of thermoplastic materials comprises a plurality of elastic metallic laminar plates 5 which are deformable so as to follow all the profile irregularities of the portions. The jaw comprises a metallic block 1 holding the plates 5 mounted parallel to each other and, preferably, made of beryllium-bronze. The plates 5 may be C-shaped, Fig. 1, or annular, Fig. 6a, each with a projecting lower end 51 or T-shape, Fig. 3 (not shown), with the upper portion resting against a silicon rubber buffer (8). If the jaw is used for welding, an electric heating resistance is located in a bore 12 and a thermocouple feeler in a bore 13. If the jaw is used for cooling, liquid is circulated through the bore 12. In use, the jaw co-operates with a similar jaw or a plane surface. A "non-stick" sheet of polytetrafluoroethylene or carbon fluoride may be placed between each of the jaws and the material when welding. The thermoplastic material to be welded may be gusseted tubing.

Description

JAWS THERMOPLASTIC MATERIALS DURING THERMOWfi ING Ofi COOLING The present invention relates to a jaw for thermowelding or cooling materia general and in particular thermoplastic materials even invention in that the surfaces of the thermowelding or cooling surfaces coming into direct contact with the parts to be welded or cooled are automatically deformable so all the irregularities of said In particular it is the of the present to eliminate an important drawback often encountered in the manufacturing of bags made of plastic In this the process preferably smarts from a tubular band having along edges two the peaks of the being opposite one another and directed to the middle of the this arrangement being provided for increasing the capacity of the bag at the same for having a sufficiently large supporting It derives therefrom during the welding of the entire width of the flattened the two Inwardly directed folds are considerably superelevated with respect the central portions of the bag so that using normal thermowelding jaws with rigid heating body it results that the weldin pressure is too at edges and at the central part while the zones comprised therebetween may possibly remain unwelded because of a total lack of pressure giving raise to leakages and consequent outflow of contents especially if this is a The or cooling jaw according to the invention eliminates this drawback thanks to the fact that the surfaces of its heating lly undergo an elastic deformation as they on the material to be welded to be thereby following the form of said and all its changes in thickness and For a understanding of the invention reference is made to the accompanying drawing in 1 cross sectional view through a welding according to the invention with heating bodies formed by shaped 2 is a view of a modification annular elements 3 a view of a further variant with shaped is the side view on the jaw of is side view on a shaped is a cross sectional view of a shaped element 6a is a side view on an annular element 6b is a cross sectional view on an annular 7a i3 the side view of a 7b is the cross section thereof and is a view of the upper elastic buffer to be T placed above 8 to 12 illustrate the process of a ba of plastic material starting from a band as well as the The jaw Illustrated in 1 and comprises a metallic block and the head portions 2 and holding the heating or cooling body formed by the elements 5 with ting surfaces When the jaw is used for purposes the bore 12 in the block 1 is adapted to receive an electric heating resistance while the bore contains a thermocouple on the the jaw is utilized for the previously welded parts of the plastio material the bore 12 will a cooling liquid passing At the lower part of the jaw there are provided the ends of the elements 5 ecting wards to form or cooling surface which comes into contact with the plastic The body is made of a plurality of elements of parallel laminar elements disposed side by side t one them is shown in a lateral view in and in a section in Each laminar element 5 is preferably made of which is an alloy most suitable for transferring the heat and for maintaining its elastic properties even at considerably high temperatures The upper part of each laminar element supported in the upper part of the jaw while the lower portion projecting from the jaw constitutes the actual or surfac6iThe particular shape provides for the necessary elasticity of each laminar element The illustrated is to be pressed against an cal lower apsized with respect to the upper one as shown in or against surface the material to be welded or being placed In 2 there is shown a modification according to the ting or body is formed with elements 5 closed to form ring elements which however are elastic thanks to the thinness of the branches forming the annular 6a 6b the details of such an anular 3 further modified embodiment i which the elements have a the required resiliency being provided by the upper elastic buffer 8 made of silicon illustrate the details thereo The way of operation of the accordin to the invention is assume to weld a bag starting from a tubular band 9 material of any plastic illustrated in the sectional view of 8 and provided two shaped recesses GHI and LMN which are intended to provide for a sufficient capacity of the filled bag as well as fo a safe supporting These recesses must be welded to eachother along the whole cross sectional line indicated in heating surfaces of the upper and of the lower jaw vertically compress the bag they encounter on GH and a much higher thickness than in the section Were not the heating surfaces elastically deformable the while at the junction pointe and said pressure would be almost However this drawback of the pressure being be avoided thanlcs to the fact that the heating surfaces of the present invention elastlcally deformable since the elements constituting heating bodies are made of separate elastic laminer elements which slightly yield vertically whe they are on superelevated I fact said surfaces come to stand on the plastic bag as illustrated in the 10 and 11 perfectly fitting to the profile of the portion to be welded even if same is very 12 shows the tubular band completely welded along the cross section 16 which after the tirelding may be cooled by two other similar to the just described welding jaws but comprising fluid flowing of the surfaces may obviously be obtained pneumatically instead of elastloally or in any other In fact the elements constituting the heating bodies may be made to project more or less from the block 1 so to it to the to be welded not in virtue of an reaction but by pneumatic or hydraulic compression by any other suitable The welding jaws ai tho material to be welded may have a sheet or fabric of carbon fluoride or any other material therebetween to prevent the plastic material to the insufficientOCRQuality

Claims (2)

1. 3.1136 WHAT IS CLAIMED ISi 1. A jaw for thermowelding or cooling materiala.,, in ^Bum-a and' in yai titulal plastic materials even of non-uniform thickness, wherein the surfaces of the heating or cooling bodies coming into direct contact with the portions to be welded or cooled are automatic lly deformable so as to follow all the profile irregularities of said portions, characterised in that said elements are made of a plurality of elastic metallic laminar elements placed side by side parallelly and held together so as to form a body, the inner portion (5") of which rests against a heated or cooled supporting block (l) while its outer projecting portion (5*) constitutes the actual heating or cooling surface which is pressed against the material to be welded or cooled so as to follow by elastic deformation of all the irregularities of thickness and shape thereof.
2. The jaw as claimed in Claim 1, characterised in that each laminar element has a C-shape and is provided at its lower end, with a projectin portion 5' which cooperates to form the heatin or cooling surface of the body* 3. The jaw as claimed in Claim 1, characterised in that 31133 5. The jaw as claimed in the preceding claims characterised by a longitudinal bore (12) which is adapted to receive an electric heating resistance when the jaw is used for welding plastic material and to receive a cooling fluid when the jaw is used for coolin the previously welded portions of said. plastic material; when the jaw is used for welding purposes a further parallel bore (13) being provided for containing a thermocouple feeler, 6. The jaw as claimed in the preceding claims, characterised in that the jaw and the material to be welded have a sheet or fabric of carbon „fluoride (Teflon) or of any other substance placed therebetween in order to prevent said plastic material from sticking to the jaws* COHEN ZEDEK & SPISBACH P.O. Box 33116, Tel Aviv. Attorneys for Applicant.
IL31136A 1968-07-11 1968-11-22 Jaws for clamping thermoplastic materials during thermowelding or cooling IL31136A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH1059568A CH478648A (en) 1968-07-11 1968-07-11 Jaw for heat sealing or cooling sheet materials, in particular thermoplastics, even of non-uniform or irregular thickness

Publications (2)

Publication Number Publication Date
IL31136A0 IL31136A0 (en) 1969-01-29
IL31136A true IL31136A (en) 1972-09-28

Family

ID=4364861

Family Applications (1)

Application Number Title Priority Date Filing Date
IL31136A IL31136A (en) 1968-07-11 1968-11-22 Jaws for clamping thermoplastic materials during thermowelding or cooling

Country Status (12)

Country Link
AT (1) AT307021B (en)
BE (1) BE724636A (en)
BR (1) BR6804660D0 (en)
CH (1) CH478648A (en)
DE (1) DE1810243A1 (en)
ES (1) ES360663A1 (en)
FR (1) FR1594916A (en)
GB (1) GB1246653A (en)
HU (1) HU162553B (en)
IL (1) IL31136A (en)
LU (1) LU57366A1 (en)
NL (1) NL6816709A (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2587935B1 (en) * 1985-09-30 1990-11-09 Cantenot Francois PROCESS FOR THE MANUFACTURE OF BELLOWS BAGS FROM A COMPLEX FILM CONSISTING OF TWO ELEMENTARY FILMS OF DIFFERENT PLASTIC MATERIALS JOINED BY APPLYING ULTRA-SOUNDS
US4693058A (en) * 1986-07-17 1987-09-15 Hayssen Manufacturing Company Bag sealing bar
DE3641973A1 (en) * 1986-12-09 1988-06-23 Niederberg Chemie WELDING DEVICE FOR PLASTIC SEALING RAILS
DE3922066A1 (en) * 1989-07-05 1991-01-10 Bielomatik Leuze & Co DEVICE AND METHOD FOR ADHESIVELY AT LEAST ONE JOINT
DE4420808A1 (en) * 1994-06-16 1995-12-21 Merz Verpackungsmaschinen Gmbh Plastics bag sealing
DE102010036025A1 (en) * 2010-08-31 2012-03-01 Lemo Maschinenbau Gmbh Device for welding foil and bag made therewith
EP2457716B1 (en) * 2010-11-26 2013-03-06 UHLMANN PAC-SYSTEME GmbH & Co. KG Seal element for producing smooth shaping fields when sealing film

Also Published As

Publication number Publication date
GB1246653A (en) 1971-09-15
DE1810243A1 (en) 1970-02-26
IL31136A0 (en) 1969-01-29
FR1594916A (en) 1970-06-08
HU162553B (en) 1973-03-28
BE724636A (en) 1969-05-02
CH478648A (en) 1969-09-30
LU57366A1 (en) 1969-02-26
ES360663A1 (en) 1970-07-16
AT307021B (en) 1973-05-10
NL6816709A (en) 1970-01-13
BR6804660D0 (en) 1973-01-25

Similar Documents

Publication Publication Date Title
US4662978A (en) Packed bag transverse sealing mechanism
CA2176689C (en) Press apparatus and methods for fusing overlapped thermoplastic sheet materials
IL31136A (en) Jaws for clamping thermoplastic materials during thermowelding or cooling
US6041580A (en) Crimping jaw assemblies for forming package closures
US3634167A (en) Method of fabricating welded branched pipe connections from weldable thermoplastic materials
US4211594A (en) Joining together shaped bodies of polytetrafluoroethylene
US2859796A (en) Means for sealing materials by heat
US4029253A (en) Method of heat and pressure bonding of plates of heat conductive metal onto stainless steel surfaces
GB1071042A (en) Strap securing method
GB1492547A (en) Heat welding polyolefinic parts
US3593000A (en) Apparatus for welding plastics
US3152944A (en) Apparatus for assembling plastic containers
US3707428A (en) Sealing apparatus for manufacturing roller coverings,vessel liners and the like
GB2056907A (en) Apparatus for welding thermoplastic layers
US2660660A (en) Arrangement of electrodes for dielectric radio-frequency heating of nonconductors, for example, thermoplastic materials
NO752793L (en)
US3802943A (en) Heating platen having improved venting means
JPH03133721A (en) Heat sealing device
CN210552986U (en) Plastic pipe sealing machine
FR2230484A1 (en) Tool for welding thermoplastic films - having double jaws which let weld zone relax during cooling
US2522659A (en) Clamping device
US2919343A (en) Welding of strips
KR100252337B1 (en) Manufacturing method and device of heat pipe
WO1999016609A1 (en) Tubular device in a bagging machine
US4441953A (en) Heat sealing machine and process for heat sealing plastic film edges