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Vacuum bags for composites

Vacuum bags enclose the material stack over the mould in infusion, vacuum consolidation and prepreg manufacture. This selection includes flat and tubular films, options for complex shapes and reusable silicone membranes.

What to consider when choosing

Choosing a bag by process and shape

Bags for infusion and consolidation

For infusing dry fibres, the film encloses the resin and vacuum circuit. For consolidating laminates and prepregs, selection also depends on the manufacturing cycle. Bags for room-temperature work should therefore be distinguished from references intended for oven curing.

From narrow moulds to large parts

Tubular formats allow narrow envelopes to be prepared, while different film widths help cover larger surfaces. On moulds with recesses or changes in section, bag conformability matters. Reusable membranes are another option, with their own sealing system and conditions of use.

Preparing the bag seal

Complete the assembly with vacuum bag sealant tapes and vacuum connections and ports. Check which resin and cycle each product is intended for. Elasticity or width alone is not enough to decide.

Vacuum bag PO120 75 microns 300 cm wide
Vacuum bagging materials for composites

75 microns Vacuum bagging film PO120, 300 cm wide

Diatex
FIPO120/0300
€1,071.00 €1,071.00 VAT excl.
Vacuum bagging film of three layers (two external copolymer and one central polyamide ) ideal for composite molding processes by infusion techniques and vacuum bagged hand lay-ups. * Temperature resistance: 120 °C * Roll width: 300 cm * Resistant to styrene * Sensitive to UV radiation. Do not expose to sunlight * Elongation at break: between 340-350 %
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