tooling for rotational moulding

Discussion in 'Boatbuilding' started by grob, May 11, 2004.

  1. grob
    Joined: Oct 2002
    Posts: 216
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    Location: Cotswolds Waterpark, UK

    grob www.windknife.com

    Does anyone know about composite tooling products for rotational molding.

    I am told that there are some resins and reinforcements that can operate at high enough temperatures 120-160c to be used as tooling for rotational moulding. Instead of the usual aluminium molds.

    Does anyone have experience with this or know of any other companies that have tried this.
     
    grob, May 11, 2004
    #1
  2. DAVIDOHL
    Joined: Jun 2004
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    Location: FLORIDA - USA

    DAVIDOHL DAVID

    Composite Tooling

    MELT TEMPERATURES OF POLYETHYLENE, WHICH IS MOST OFTEN USED, RANGES FROM 175 TO 200 DEGREES CELSIUS
     
    DAVIDOHL, Jun 7, 2004
    #2
  3. grob
    Joined: Oct 2002
    Posts: 216
    Likes: 5, Points: 18, Legacy Rep: 53
    Location: Cotswolds Waterpark, UK

    grob www.windknife.com

    David, thanks for that. I am beginning to think that I have been misled on composite tooling for rotational moulding. While there are products that can withstand the high temperatures, I think that the thermal conductivity of the material is the killer.
     
    grob, Jun 8, 2004
    #3

  5. DAVIDOHL
    Joined: Jun 2004
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    Location: FLORIDA - USA

    DAVIDOHL DAVID

    ost ovens run at 325 to 400 degrees celsius. The most popular materials for molds are mild steel, stainless steel(sheet) and aluminium cast. There are a few other materials used, like nickel plate, but not very often.
     
    DAVIDOHL, Jun 8, 2004
    #4
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