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Polyvinyl Alcohol PVA

PVA Polyvinyl Alcohol Release Agent 500ml

Stock Code:MRAPVA-500

£4.18 inc. VAT

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You must specify a quantity of at least 1

Overview

PVA (polyvinyl alcohol) is a water-based liquid plastic that can be applied to waxed moulds to prevent moulded parts from sticking. PVA is not always required. Often laminators rely solely on mould release wax to create a surface contaminant on the mould that allows parts to be removed. However, on complicated moulds and on new moulds, when the risk of a part sticking in a mould is greatest, PVA can be applied over a waxed mould.

PVA can be applied by brush, paint roller or with spray equipment. PVA often leaves a texture on the surface of the mould after it dries. This texture is duplicated or moulded into the part produced in the mould. For parts that will be painted later, this texture is not an issue. However, for parts that rely on the mould surface to create a smooth final finish, the texture can be a problem.

To achieve the smoothest and least textured PVA coating, apply it with spray equipment. The preferred application technique is to spray a couple of very fine mist coats a few minutes apart before applying a more generous wet coat over the entire mould. This technique minimizes the likelihood of getting "fisheyes" or imperfections in the coating and produces a very smooth PVA release coating.

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    UK Shipping Information

    Orders required to be delivered on the next working day must be placed before 1pm.

    European Shipping Information

    If you are situated within the EU, Switzerland, Norway, Gibraltar, Liechtenstein or San Marino, then you can now order directly through our website.

    International Shipping Information

    If you are in Malta, Cyprus or any other international destination, you can still order in the same way as all of our other customers, but we will need to provide you with a bespoke quotation for the delivery cost.