GB998802A - Improvements in or relating to moulding resin sheets - Google Patents

Improvements in or relating to moulding resin sheets

Info

Publication number
GB998802A
GB998802A GB157561A GB157561A GB998802A GB 998802 A GB998802 A GB 998802A GB 157561 A GB157561 A GB 157561A GB 157561 A GB157561 A GB 157561A GB 998802 A GB998802 A GB 998802A
Authority
GB
United Kingdom
Prior art keywords
film
cellulose
cellulose film
series
sulphuric acid
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
GB157561A
Inventor
Bernard Victor Fox
Maurice Arthur Maloney
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.)
British Cellophane Ltd
Original Assignee
British Cellophane 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 British Cellophane Ltd filed Critical British Cellophane Ltd
Priority to GB157561A priority Critical patent/GB998802A/en
Priority to DE1962B0065427 priority patent/DE1252884B/en
Priority to FR884752A priority patent/FR1310345A/en
Publication of GB998802A publication Critical patent/GB998802A/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
    • B29C33/00—Moulds or cores; Details thereof or accessories therefor
    • B29C33/56—Coatings, e.g. enameled or galvanised; Releasing, lubricating or separating agents
    • B29C33/68—Release sheets

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Moulding By Coating Moulds (AREA)
  • Manufacture Of Macromolecular Shaped Articles (AREA)

Abstract

998,802. Mould release film; regenerated cellulose films. BRITISH CELLOPHANE Ltd. Dec. 21, 1961 [Jan. 13, 1961], No. 1575/61. Headings B5A and B5B. A cloudy cellulose film having a matt surface, which is used as a mould release film, is formed by casting viscose into a coagulation bath, in which the sulphuric acid concentration is between 5% and 45% by weight above the concentration at which cloud is first formed in the cellulose film. An example is given in which a standard viscose with a salt index of 3À0 is extruded through a slot-shaped orifice into a coagulation bath at 42 degrees centrigrade containing parts by weight:-12 sodium sulphate; 30 sulphuric acid; 0À1 lauryl pyridium chloride; 57À9 water. The coagulated film is led through a series of liquid treatment baths to complete the regeneration of the cellulose film and to wash and purify the film, over a series of treated drying rollers and is wound into a roll. Glass fibre reinforced polyester epoxy resin sheets with matt surfaces may be moulded in a stainless steel mould lined with a cellulose film as above.
GB157561A 1961-01-13 1961-01-13 Improvements in or relating to moulding resin sheets Expired GB998802A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
GB157561A GB998802A (en) 1961-01-13 1961-01-13 Improvements in or relating to moulding resin sheets
DE1962B0065427 DE1252884B (en) 1961-01-13 1962-01-05 Use of cellulose sheets as a release agent in the manufacture of molded resin panels
FR884752A FR1310345A (en) 1961-01-13 1962-01-13 Improvements to the molded resin sheet manufacturing process

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB157561A GB998802A (en) 1961-01-13 1961-01-13 Improvements in or relating to moulding resin sheets

Publications (1)

Publication Number Publication Date
GB998802A true GB998802A (en) 1965-07-21

Family

ID=9724342

Family Applications (1)

Application Number Title Priority Date Filing Date
GB157561A Expired GB998802A (en) 1961-01-13 1961-01-13 Improvements in or relating to moulding resin sheets

Country Status (2)

Country Link
DE (1) DE1252884B (en)
GB (1) GB998802A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2597395A1 (en) * 1986-04-16 1987-10-23 Man Technologie Gmbh Process for manufacturing fibre-composite components using a demoulding agent
WO1998017713A1 (en) * 1996-10-21 1998-04-30 Aristech Chemical Corporation Process for making a mineral filled acrylic sheet having a matte finish with improved stain resistance
ES2179747A1 (en) * 1999-09-03 2003-01-16 Luca Toncelli Separating agent which can be used for the manufacture of products in the form of slabs consisting of a granulate or particles of stone material bonded with a hardening resin

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3533875A (en) * 1966-12-02 1970-10-13 Fmc Corp Method of forming delustered finishes on thermosetting resins

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2597395A1 (en) * 1986-04-16 1987-10-23 Man Technologie Gmbh Process for manufacturing fibre-composite components using a demoulding agent
WO1998017713A1 (en) * 1996-10-21 1998-04-30 Aristech Chemical Corporation Process for making a mineral filled acrylic sheet having a matte finish with improved stain resistance
ES2179747A1 (en) * 1999-09-03 2003-01-16 Luca Toncelli Separating agent which can be used for the manufacture of products in the form of slabs consisting of a granulate or particles of stone material bonded with a hardening resin

Also Published As

Publication number Publication date
DE1252884B (en) 1967-10-26

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