GB1112891A - A method and an apparatus for cooling a web of film or a tow of filaments comprising a thermoplastic material and a plasticizer therefor - Google Patents

A method and an apparatus for cooling a web of film or a tow of filaments comprising a thermoplastic material and a plasticizer therefor

Info

Publication number
GB1112891A
GB1112891A GB15357/65A GB1535765A GB1112891A GB 1112891 A GB1112891 A GB 1112891A GB 15357/65 A GB15357/65 A GB 15357/65A GB 1535765 A GB1535765 A GB 1535765A GB 1112891 A GB1112891 A GB 1112891A
Authority
GB
United Kingdom
Prior art keywords
tow
web
belt
travel
roller
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
GB15357/65A
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.)
NL EXTRUSIE MIJ NV
Original Assignee
NL EXTRUSIE MIJ NV
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
Priority claimed from NL6404550A external-priority patent/NL6404550A/xx
Application filed by NL EXTRUSIE MIJ NV filed Critical NL EXTRUSIE MIJ NV
Publication of GB1112891A publication Critical patent/GB1112891A/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
    • B29C35/00—Heating, cooling or curing, e.g. crosslinking or vulcanising; Apparatus therefor
    • B29C35/16—Cooling
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B13/00—Conditioning or physical treatment of the material to be shaped
    • B29B13/02—Conditioning or physical treatment of the material to be shaped by heating
    • B29B13/023—Half-products, e.g. films, plates
    • 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
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
    • B29C48/05—Filamentary, e.g. strands
    • 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
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
    • B29C48/07—Flat, e.g. panels
    • B29C48/08—Flat, e.g. panels flexible, e.g. films
    • 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
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/88—Thermal treatment of the stream of extruded material, e.g. cooling
    • B29C48/911—Cooling
    • 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
    • B29C71/00—After-treatment of articles without altering their shape; Apparatus therefor
    • B29C71/02—Thermal after-treatment

Landscapes

  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • Treatment Of Fiber Materials (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)

Abstract

1,112,891. Heat-setting filaments and films. NEDERLANDSE EXTRUSIE MAATSCHAPPIJ N.V. 12 April, 1965 [24 April, 1964 (2)], No. 15357/65. Heading B5B. An apparatus for cooling a travelling web of film or a tow of artificial filaments consisting of a thermoplastic material and a plasticizer therefor comprises a conveyer belt 1 (Fig. 1) sloping upwards in the direction of travel of the web or tow and supported in a driven roller 2 and an idler roller 3. The web or tow, the temperature of which may previously have been passed through a heat treating duct, is pressed on to the upper run of the belt by the roller 4 and the web or tow is conveyed on the sloping operative upper run of the belt 1 through the tunnel 6 to which cooling air is supplied by a fan 7. Owing to the friction between the web or tow and the belt the latter is conveyed through the tunnel by the belt but the frictional force is opposed by the forces which cause the web or tow to contract as it is cooled by its passage through the tunnel. In addition to these contracting forces, which cause the web or tow to lag behind the travel of the belt through the tunnel, the component of the force of gravity which is parallel to the sloping upper run of the belt and acts in a direction opposite to the direction of travel of the upper run of the belt also opposes the frictional force between the web or tow and the belt and in consequence the strains retained in the web or tow after it has been cooled are reduced. The angle of upward inclination of the belt (in the direction of travel of the web or tow) may decrease gradually or stepwise in the direction of travel. In a modification illustrated in Fig. 2, the web or tow, immediately after leaving the belt 1 passes through the nip of a pair of rollers 9 and 10, the roller 9 being driven by the belt roller 3 in such a manner that its peripheral speed is slightly below the speed of the belt 1. The degree of longitudinal shrinkage of the web or tow is thereby positively controlled.
GB15357/65A 1964-04-24 1965-04-12 A method and an apparatus for cooling a web of film or a tow of filaments comprising a thermoplastic material and a plasticizer therefor Expired GB1112891A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL6404551 1964-04-24
NL6404550A NL6404550A (en) 1964-04-24 1964-04-24

Publications (1)

Publication Number Publication Date
GB1112891A true GB1112891A (en) 1968-05-08

Family

ID=26643759

Family Applications (1)

Application Number Title Priority Date Filing Date
GB15357/65A Expired GB1112891A (en) 1964-04-24 1965-04-12 A method and an apparatus for cooling a web of film or a tow of filaments comprising a thermoplastic material and a plasticizer therefor

Country Status (1)

Country Link
GB (1) GB1112891A (en)

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