GB998126A - Manufacture of polyolefin film - Google Patents

Manufacture of polyolefin film

Info

Publication number
GB998126A
GB998126A GB14922/62A GB1492262A GB998126A GB 998126 A GB998126 A GB 998126A GB 14922/62 A GB14922/62 A GB 14922/62A GB 1492262 A GB1492262 A GB 1492262A GB 998126 A GB998126 A GB 998126A
Authority
GB
United Kingdom
Prior art keywords
film
gas
butene
aerosol
propylene
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
GB14922/62A
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.)
Kalle GmbH and Co KG
Original Assignee
Kalle GmbH and Co KG
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 Kalle GmbH and Co KG filed Critical Kalle GmbH and Co KG
Publication of GB998126A publication Critical patent/GB998126A/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
    • 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
    • B29C48/9135—Cooling of flat articles, e.g. using specially adapted supporting means
    • B29C48/915—Cooling of flat articles, e.g. using specially adapted supporting means with means for improving the adhesion to the supporting means
    • B29C48/917—Cooling of flat articles, e.g. using specially adapted supporting means with means for improving the adhesion to the supporting means by applying pressurised gas to the surface of the flat article
    • 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
    • B29C48/9135—Cooling of flat articles, e.g. using specially adapted supporting means
    • B29C48/914—Cooling of flat articles, e.g. using specially adapted supporting means cooling drums

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)

Abstract

998,126. Polyolefin films. KALLE A.G. April 17, 1962 [April 20, 1961 (2)], No. 14922/62. Heading B5B. A polyolefin film having a clear smooth surface is produced by extruding a molten film 2 downwards from a slot-shaped nozzle 1 and pressing the still molten film at a pressure of 25-1000 mm. of water against the moving surface of a water-cooled chromium plated roller 7 by means of a stream of gas of the same width as the film from a slot-shaped nozzle 3. The width of the film may be 0À1-1À5 mm., its thickness may be 30 Á, and its rate of flow may be 50 m/min. A baffle plate (not shown) may be situated between nozzles 1 and 3. The angle of impingement of the gas stream with the advancing film may be 95-110 degrees. The distance of the nozzle 3 from the film may be 1-50 mm. The gas may be at room temperature or above, and may be air, nitrogen or carbon dioxide. A slip-improving agent in the form of an aerosol may be added to the gas before it issues from nozzle 3 (Figs. 2 and 3, not shown). The aerosol may be formed from an aqueous solution or dispersion in water and/or an organic solvent. The slipimproving agent may be sodium chloride, carbonate, bicarbonate, perborate, sulphate, oxalate, fumarate, terephthalate, or alginate, trisodium phosphate, calcium bromide or carbonate, titanium dioxide, silica, kaolin, bentonite, aluminium oxide, mica, glass powder, zinc stearate, dimethyl terephthalate, terephthalic acid, polyvinyl alcohol, methyl cellulose, hydroxymethyl cellulose, dextrin, starch, casein, zein, silicone, linseed, olive, or paraffin oil, glycerine, glycol, or methyl alcohol. A coloured salt, e.g. cobaltous chloride, Mohr's salt chromic chloride, or copper sulphate, may also be introduced into the aerosol. The polyolefin may be a polymer of ethylene, propylene, butene-1, or methylpentene, or a copolymer or ethylene and propylene, ethylene and butene-1, or propylene and butene-1.
GB14922/62A 1961-04-20 1962-04-17 Manufacture of polyolefin film Expired GB998126A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DEK0043522 1961-04-20
DEK0043521 1961-04-20

Publications (1)

Publication Number Publication Date
GB998126A true GB998126A (en) 1965-07-14

Family

ID=25983394

Family Applications (1)

Application Number Title Priority Date Filing Date
GB14922/62A Expired GB998126A (en) 1961-04-20 1962-04-17 Manufacture of polyolefin film

Country Status (3)

Country Link
CH (1) CH393727A (en)
GB (1) GB998126A (en)
SE (1) SE314193B (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2530530A1 (en) * 1982-07-21 1984-01-27 Clopay Corp PROCESS FOR PRODUCING THERMOPLASTIC THIN SHEET AND SHEET
WO2014153014A1 (en) * 2013-03-15 2014-09-25 Davis-Standard, Llc Apparatus and method for manufacturing and processing films having strips of increased thickness
CN112574505A (en) * 2020-11-23 2021-03-30 宁波田丰日用品制造有限公司 Modified PP material

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2530530A1 (en) * 1982-07-21 1984-01-27 Clopay Corp PROCESS FOR PRODUCING THERMOPLASTIC THIN SHEET AND SHEET
WO2014153014A1 (en) * 2013-03-15 2014-09-25 Davis-Standard, Llc Apparatus and method for manufacturing and processing films having strips of increased thickness
US9162403B2 (en) 2013-03-15 2015-10-20 Davis-Standard, Llc Apparatus for manufacturing and processing pre-stretch films having strips of increased thickness
CN112574505A (en) * 2020-11-23 2021-03-30 宁波田丰日用品制造有限公司 Modified PP material
CN112574505B (en) * 2020-11-23 2022-04-15 宁波田丰日用品制造有限公司 Modified PP material

Also Published As

Publication number Publication date
CH393727A (en) 1965-06-15
SE314193B (en) 1969-09-01

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