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. 

Döküm Tipi 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.
  • 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

  • 20 Kg

  • 230 Kg

  • 230 Kg
    Recond. Barrel

  • 1.100 Kg

  • 1.100 Kg
    Recond. IBC

Modification Description

  • FR   Filled flame retardant
  • D*   Filled (*with filler content)
  • T Thixotropic (no sagging)
  • A Cobalt preaccelerated
  • ABP Amine preaccelerated
  • UV UV Curing
  • L   UV light stabilized
  •   I Lower viscosity
  •   V Higher viscosity
  •   LSE   LSE (low styrene emission)
  •   H* Gel time customized (at room temperature) * minutes
  • H40 Optimized for summer season. Gel time (at room temperature) 40 minutes.
  • H20 Optimized for winter season. Gel time (at room temperature) 20 minutes.
  •   COLOR   White or custom color options

Gelcoat Customizations
Polijel gelcoat table descriptions and modifications.

  • Spray Application (airless preferred)
  • Brush or Roller Application
  • Color Option: White colored
  • Color Option: Light colored (pastel)
  • Color Option: PRO colored

Production Quantity Depending on Process (parts/year)
Regardless of product dimension and complexity..

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