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Pultrusion Line
The pultrusion process was developed in the 1940’s for manufacturing fishing poles. It is the fastest growing process in today’s market. The raw materials used in the pultrusion process are resin, continuous mat, continuous fiber, cloth, surface veil, filler, mold release agent, curing agents, and pigment. Raw materials are processed through heated molds and formed into various shapes as designated by the molds. The latest development uses thermoplastic material to form the final products. There are two common methods of pultrusion equipment. One uses hydraulic grips, the other uses a caterpillar puller (at a lower cost but more difficult to produce different products). There are also vertical pull process, bending pull process, and the latest taper pull process. You can add a 360 degree filament winder to the pultrusion equipment to increase the helical strength of the products. You can also use a radio frequency heating process to increase the production rate for parts that are over 25 mm in thickness. There are several hundreds of products that are now made from the pultruded process.
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Pultrusion Line
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