APPARATUS FOR THE PRODUCTION OF CASE POLYMER SHEETS

• US 3,689,022 A
• Filed: 11/01/1971
• Issued: 09/05/1972
• Est. Priority Date: 11/01/1971
• Status: Expired due to Term

• Current Assignee: Carlo Rossetti, Industrielle,
• Original Assignee: Carlo Rossetti, Industrielle,
• Inventors: Carlo Rossetti, C/O Rostero S.A., Industrielle,
• Primary Examiner(s): Robert L. Spicer, Jr.
• Application Number:
  US05/194,464
• Time in Patent Office: 309 Days
• Field of Search: 264/102,219,313,319 249/81,134,119 425/405,447,182,186,117,116,175,256,384,436,450
• US Class Current: 249/81
• CPC Class Codes: B29C 33/0011 thin-walled moulds
• CPC Class Codes: B29C 33/04 using liquids, gas or steam tyre moulds with incorporated heating or cooling means using liquids, gas or steam B29D30/0601
• CPC Class Codes: B29C 33/301 Modular mould systems [MMS], i.e. moulds built up by stacking mould elements, e.g. plates, blocks, rods B29C33/0088 takes precedence
• CPC Class Codes: B29C 35/007 Tempering units for temperature control of moulds or cores, e.g. comprising heat exchangers, controlled valves, temperature-controlled circuits for fluids B29C35/0294 takes precedence
• CPC Class Codes: B29C 39/265 comprising two large plates positioned at a small distance from each other, e.g. for making panels
• CPC Class Codes: B29K 2105/0002 monomers or prepolymers
• CPC Class Codes: B29K 2905/02 Aluminium
• CPC Class Codes: B29K 2905/12 Iron

Abstract

Hollow metal plates, each formed with an interior flow passageway for circulating a fluid heat transfer medium, are used in apparatus for producing cast polymer sheets which includes a casting chamber. The plates are mode of iron or preferably of a light metal, such as aluminum and aluminum alloys, and are constructed of a frame, plates and dividers secured together by epoxy resin to form a sealed flow passageway. Means are arranged to equalize the pressure in the flow passageway and the pressure in the casting chamber of the apparatus.

Claims

2. Apparatus, as set forth in claim 1, wherein said pressure equalizing means comprises a closed vessel disposed in said heat transfer flow circuit in communication with the heat transfer medium flowing therethrough, and a pipe connected at one end to said close vessel and at its other end to said casting chamber so that it is in communication with the interior of the casting chamber for effecting the equalization of pressure between the casting chamber and the interior flow passageway within said plate members.