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Dip moulding tools

Tubes and bellows

Since 1995 we are certified by ISO 9002.

Material performance
PVC plastisol - the principal material used in dip moulding consists of PVC polymer suspended in a plasticiser to which is added stabilisers and pigments.

Tensile strength and elongation at break (Tests were conducted generally in accordance with the appropriate section of BS 2782) Average results were as follows:
Material grade ref.	Hardness Shore A	BS softness number	Specimen temperature MN/m2	Maximum stress at break	Percentage elongation
PDM 100	55	85	23°C	9.6	473
PDM 100	55	85	65°C	9.4	460
PDM 102	75	45	23°C	14.1	398
PDM 102	75	45	65°C	13.6	400

Tear strength (Tests were carried out at 23°C generally in accordance with BS 903) Average results were as follows:
Material grade ref.	Hardness Shore A	BS softness number	Tear Strength KN/m
PDM 100	55	85	27.4
PDM 102	75	45	50.6

High temperature performance
Mouldings made from plastisol soften and become more elastic with increasing temperature. We would not recommend the use of mouldings produced from general grades of plastisol at continuous temperatures above 65°C. However, as shown in the table on page 7, specialised grades such as PDM 100 HT are available and these can be used at continuous temperatures up to 90°C, with intermittent use at higher temperatures.

Electrical insulation properties (Tests were carried out in accordance with BS 2782:202A and 203A) Average results were as follows:
Material grade ref.	Hardness Shore A	BS softness number	Surface resistivity (Ohm cm)	Volume resistivity
PDM 100	55	85	1.3 x 1012	5.0 x 1010
PDM 102	75	45	1.2 x 1012	3.3 x 1011