Vacuum sizing

Technique used downstream of the Extruder to assist in forming the correct shape and size of Extrusion. Vacuum sizing is normally used where complicated Profiles are required (such as window profiles) or to avoid deformation of Extrusions before they set into their final shape. Vacuum sizing may also be used where Tubing with a close-tolerance on the outside diameter (such as pneumatic tubing) is required.

Vacuum sizing works by feeding the still molten extrudate through a sealed chamber in which a vacuum is being drawn. The extrudate passes through a series of vacuum sizing bushes or plates and is formed into it's final shape before cooling. Cooling in the vacuum bath may be using water or air.

Altec have over 30 years experience in manufacturing Plastic & Rubber Extrusions, Extruded Profiles and Tubing. We're quite rightfully proud of our reputation for consistently meeting the needs of customers over that time. Because we've remained small and focussed we've also remained more attentitive, more cost effective and more responsive than larger manufacturers.

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Glossary of Extrusion Materials & Terms

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A.B.S.
Acrylic
Chemical Hose
Coextrusion
Compression Set
Cord
Cutting
D.E.H.P.-free PVC
D.O.P.-free PVC
Die
Dioctyl phthalate-free PVC
E.P.D.M.
Elastomer
Extruder
Extrusion
F.E.P.
F.K.M.
F.V.M.Q.
Flouroelastomer
Flourosilicone
Fluorocarbon
Fluoroelastomer
Fluoropolymer
Fluorosilicone
Gaskets
H.D.P.E.
Hose
L.D.P.E.
L.L.D.P.E.
M.D.P.E.
Masterbatch
Medical Tubing
N.B.R.
Natural Rubber
Neoprene
Nitrile P.V.C.
Nitrile Rubber
Nylon 12
Nylon 6
Nylon 66
P.A.
P.B.T.
P.C.
P.E.T.
P.E.X.
P.F.A.
P.M.M.A.
P.P.
P.T.F.E.
P.U.
P.U.R.
P.V.C.
P.V.C.U.
Peristaltic Pump Tubing
Peroxide Cured Silicone
Phthalate-free PVC
Pin
Plastic
Plasticiser
Platinum Cured Silicone
Polyamide
Polycarbonate
Polychloroprene
Polyester
Polyethylene
Polymer
Polyolefin
Polypropylene
Polythene
Polyurethane
PolyVinylChloride
Profile
Quality Assurance
Rigid P.V.C.
Rubber
S.P.C.
Santoprene
Seals
Silicon Rubber
Silicone Rubber
Strip
Synthetic Rubber
T.P.E.
Teflon
Thermoplastic
Thermoplastic Elastomer
Thermoplastic Rubber
Thermoset
Tubing
U.H.M.W.P.E.
U.P.V.C.
V.L.D.P.E.
Vacuum sizing
Vinyl
Viton
X.L.P.E.