GB950854A - Improvements relating to heat sealing of thermoplastic materials - Google Patents

Improvements relating to heat sealing of thermoplastic materials

Info

Publication number
GB950854A
GB950854A GB1982259A GB1982259A GB950854A GB 950854 A GB950854 A GB 950854A GB 1982259 A GB1982259 A GB 1982259A GB 1982259 A GB1982259 A GB 1982259A GB 950854 A GB950854 A GB 950854A
Authority
GB
United Kingdom
Prior art keywords
die
plate
spring
sealing
heat
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB1982259A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
John Waddington Ltd
Original Assignee
John Waddington Ltd
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 John Waddington Ltd filed Critical John Waddington Ltd
Priority to GB1982259A priority Critical patent/GB950854A/en
Publication of GB950854A publication Critical patent/GB950854A/en
Expired legal-status Critical Current

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
    • B29C66/83—General aspects of machine operations or constructions and parts thereof characterised by the movement of the joining or pressing tools
    • B29C66/832—Reciprocating joining or pressing tools
    • B29C66/8322—Joining or pressing tools reciprocating along one axis
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • 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
    • 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
    • B29C66/81—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
    • 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

Landscapes

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

Abstract

950,854. Seaming non-metallic sheet material. JOHN WADDINGTON Ltd., and E. DODSWORTH. Sept. 7, 1960 [June 10, 1959], No. 19822/59. Heading B5K. A method of heat sealing thermoplastic materials comprises interposing a plate I between the material 2 to be sealed and a heated element (or die) 3 during the sealing but which is separated therefrom on completion of the sealing. The plate 1 is held by a spindle 4 slidably held in a bush 5 in the die 3 against the pressure of a spring 6. The reciprocable die 3 and the plate 1 move towards the material 2 until the plate makes contact therewith and the die continues to advance, compressing the spring 6, until it engages the plate 1 and transmits heat thereto to effect the seal. On withdrawal of the die the spring 6 moves the plate 1 from the die and heat is quickly dissipated therefrom. Alternatively the plate may be supported from the die counterpart or mould by spring means. In a modification (not shown) the plate moves to and fro through an angle of 90 degrees to the die so as to be interposed between the die 3 and material 2 when desired.
GB1982259A 1959-06-10 1959-06-10 Improvements relating to heat sealing of thermoplastic materials Expired GB950854A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1982259A GB950854A (en) 1959-06-10 1959-06-10 Improvements relating to heat sealing of thermoplastic materials

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1982259A GB950854A (en) 1959-06-10 1959-06-10 Improvements relating to heat sealing of thermoplastic materials

Publications (1)

Publication Number Publication Date
GB950854A true GB950854A (en) 1964-02-26

Family

ID=10135819

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1982259A Expired GB950854A (en) 1959-06-10 1959-06-10 Improvements relating to heat sealing of thermoplastic materials

Country Status (1)

Country Link
GB (1) GB950854A (en)

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