Filament Winding

Filament winding is an ideal production method for producing cylindrical structures. Filament winding process has two different types. (A) Helical Filament Winding (B) Continuous Filament Winding. Fiberglass and catalyzed resin are wound over a rotating mandrel. Composite tanks, silos, ducts, water tanks, pipes and pressurized vessels are produced with this method. Polipol 3562 has high mechanical properties and good fiber wet-out. Polipol 3872-I is the preferred choice where high elongation at breaking point and chemical resistance is needed.

Filament winding is an ideal method for producing cylindrical structures.

Continuous Filament Winding Application
Glassfiber laminate is applied on to amoving mandrel with resin. Moving mandrel consists of a steel band which moves in the axial direction sliding over ball bearings.
Pipes are produced on this steel band mandrel continuously.
It is possible to produce pipes of various diameters with this technique. This production technique has 3 main zones.
Raw material feeding zone, Curing zone and Cutting zone.
First, a realese film (e.g. polyester film) is wound onto mandrel, followed by a surfacing veil. Glass roving and chopped glass, sand agregate and polyester resin are applied simultaneously on the rotating mandrel.
After application of raw materials, pressure rolls help to release entrapped air inside the laminate. After curing, material is cut into the desired lengths.

Chemical Resistance Guide
Refer to our Chemical Resistance Guide for more information about use of resins in different chemical environments.

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Product Description
Technical Data Sheets
Safety Data Sheets
Chemical Structure
Available Modifications
Viscosity
Monomer Content
Acid Value [mg KOH/g]
Gel Time
Tensile Strength
Elongation at Break,Tensile
Flexural Strength
HDT [0,45 MPa]
Barcol Hardness, 934
Remarks
Highlights
Primary Usages

Polipol 3562
Filament winding type polyester
PDF
PDF
Ortho
250-350
38-42
max. 26
14-16
74
3,15
125
75
42
OT1 , OT10
- High mechanical properties
- Special formulation for pipe producers
- Good fiber wet-out
- High modulus of elasticity
Tanks, silos, GRP pipes.

Polipol 3872-I
Chemical resistant polyester
PDF
PDF
ISO
370-420
39-43
max. 12
6-14
76
4,2
140
97
44
OT1 , OT9
- Chemical resistant
- High elongation at breaking point
- Good fiber wet-out
- Food contact
GRP pipes, equipment production for the chemical industry, storage and transfer units.

Polipol 388
Filament winding type liner polyester
PDF
PDF
ISO
500-700
32-35
max. 15
20-30
13
65
N/A
-
-
OT1 , OT2
- Excellent elongation at breaking point
- Low reactivity
GRP pipe lining.

Helical Filament Winding Application

Initially fibers are wet in a resin bath. After the resin bath, fibers are wound around a constant length rotating steel mandrel. Angular winding in a longitudinal direction will provide more strength. With this method, production of consistent size pipes are possible. A polyester based release film is applied on the mandrel and a chemical resistant layer will form the first layer. Continuous fiberglass is applied for structural integrity. These composite materials contain no or less filler. This provides a lighter product but at a higher cost. This type of production is usually preferred for chemical process equipment and pressurized vessels.

Packing Types

You can choose any package type suitable for your production system or you can get further information from our sales department regarding container options.

Contact Sales

25.000 kg
ISO Tank Container Optional Steam heating line Optional Long term renting
18 Kg
Pail
20 Kg
Bucket
230 Kg
Barrel
230 Kg
Recond. Barrel
1.100 Kg
IBC
1.100 Kg
Recond. IBC