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GRP for Potable water/food container manufacture.

Discussion in 'Tech Tips and Advice' started by Martin @ EC Tech, Jan 8, 2015.

  1. Martin @ EC Tech

    Martin @ EC Tech Tech Staff Member

    Crystic 491pa is thixotropic, isophthalic polyester resin with good water and chemical resistance. This resin is especially suitable for manufacturing vessels to contain food and potable liquids, such as drinking water. You must read thoroughly Technical data sheet to follow post curing information if intended for this use. the data sheet can be found on our website in the 491PA product listing or at the link posted below.

    491PA :- http://www.ecfibreglasssupplies.co.uk/p-1504-crystic-491-pa-resin-including-catalyst.aspx

    Along with this resin you can use Gelcoat 65PA as the first layer into your mould which is our standard gelcoat available in Clear, Black, Grey or white. or to coat the inside as a final smooth coating our Standard flowcoat variant in the same colours, both are capable of giving low taint and suitable for drinking water. see links below to these products:-

    Gelcoat:- http://www.ecfibreglasssupplies.co.uk/c-721-polyester-gel-coat-whiteblackcleargrey.aspx

    Flowcoat:- http://www.ecfibreglasssupplies.co.uk/c-662-flowcoattop-coat-whiteblackcleargrey.aspx


    However you can only achieve the low residual styrene content you need for taint free by a heated post cure cycle as mentioned below and on the Techical Data sheet.

    Once the part has cured at room temperature for 24 hours You need to start the post cure , to do this you need to then get it up to a close to 80 deg C and cure at this temperature for 3 hours minimum.

    For further advice you can contact our technical team on 0191 497 5134.

    Kind regards Martin

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