PULTRUSION TECHNOLOGY

Fibraworld Pultrusione Line to produce GRP Profiles

Pultrusion is a continuous process that permits to produce composite profiles with a constant cross-section without limit in length.     

Made of oriented structural fibers and linked by a polymeric matrix, it’s possible to change considerably the chemical-physical characteristics of the final product by varying the orientation or type of fibers, and by manipulating the formulation of the matrix (resin + additives).

The production begins by impregnating the fibers inside the tanks filled with matrix. Afterwards the fibers impregnated are directed in the right way into the heated mold, inside which the catalysis takes place and the profile obtains the shape of the mold.

The puller system pulls out the final product from the mold, and bring it to the cutting station, where the profile is cut to the required length.

RAW MATERIALS

Fibraworld - Polyester Resin Used In Pultruded GRP Profiles

POLYESTER RESINS

The polyester resins used by Fibraworld are all thermosetting.
The difference between thermosetting and thermoplastic is that the first one can't be converted in other shape by heating.

Following the most used resins:

- ORTHOPHTHALIC = they are generally the cheapest of all
polyesters. Orthophthalic Resins are used where general
properties are not critical

- ISOPHTHALIC = they are the most suitable resins, thanks to their
low cost and excellent physical properties of the final product

- VINYLESTER = they are the most expensive resins, but they have
outstanding characteristics unmatched by any other polyester resin

POLYESTER RESINS

Fibraworld - Polyester Resin Used In Pultruded GRP Profiles

The polyester resins used by Fibraworld are all thermosetting.
The difference between thermosetting and thermoplastic is that the first one can't be converted in other shape by heating.

Following the main resins in order of usage:

- ORTHOPHTHALIC = they are generally the cheapest of all polyesters. Orthophthalic
Resins are used where general properties are not critical

- ISOPHTHALIC = they are the most suitable resins, thanks to their low cost and
excellent physical properties of the final product

- VINYLESTER = they are the most expensive resins, but they have outstanding
properties unmatched by any other polyester resin

Fibraworld - Pultrusion Additives - GRP Profiles

PULTRUSION ADDITIVES

One of the main advantages of pultrusion is that it's possible to change resin formulations in order to modify drastically the final properties of the profile. There are additives that assigns self-estinguishing properties, other that improve the smoothness of the surface and others for UV Protection.

Because of this great variety of additives, it's very important to understand the application or the environment where the profiles will be installed, in order to choose the most suitable formulation.

PULTRUSION ADDITIVES

Fibraworld - Pultrusion Additives - GRP Profiles

One of the main advantages of pultrusion is that it's possible to change resin formulations in order to modify drastically the final properties of the profile. There are additives that assigns self-estinguishing properties, other that improve the smoothness of the surface and others for UV Protection.

Because of this great variety of additives, it's very important to understand the application or the environment where the profiles will be installed, in order to choose the most suitable formulation.

Fibraworld - Glass Direct Roving used in Pultruded GRP Profiles

DIRECT ROVING

Roving gives to the final product high strength along the axis of the pultrusion (but doesn't provide any cross reinforcement).

Roving are also used to carry the other types of reinforcement and resin into the mold.

The main typology of roving that Fibraworld actually use is E-Glass Roving (with a great electrical insulation), but other typologies of Roving are also possible to use, as S-Glass Roving, Carbon Roving and Aramid Roving.

Depending on the dimensions of the profile, different sizes of Roving are used, from 2400 tex to 9600 tex (1 tex is 1 g/km).

DIRECT ROVING

Fibraworld - Glass Direct Roving used in Pultruded GRP Profiles

Roving gives to the final product high strength along the axis of the pultrusion (but doesn't provide any cross reinforcement).

Roving are also used to carry the other types of reinforcement and resin into the mold.

The main typology of roving that Fibraworld actually use is E-Glass Roving (with a great electrical insulation), but other typologies of Roving are also possible to use, as S-Glass Roving, Carbon Roving and Aramid Roving.

Depending on the dimensions of the profile, different sizes of Roving are used, from 2400 tex to 9600 tex (1 tex is 1 g/km).

Fibraworld - Glass Mat Continuous Filament used in Pultruded GRP Profiles

CONTINUOUS FILAMENT MAT

Mat is born from the chemical assembly of scattered fibers (mostly E-Glass Fibers).

The main purpose of Mat is to give a cross reinforcement to the profile, to divide and fix the different layers of Roving, to create a superficial protection and to facilitate the workability of the product.

Depending on the dimensions of the profile, different sizes of Mat are used, from 300 g/m² to 600 g/m².

CONTINUOUS FILAMENT MAT

Fibraworld - Glass Mat Continuous Filament used in Pultruded GRP Profiles

Mat is born from the chemical assembly of scattered fibers (mostly E-Glass Fibers).

The main purpose of Mat is to give a cross reinforcement to the profile, to divide and fix the different layers of Roving, to create a superficial protection and to facilitate the workability of the product.

Depending on the dimensions of the profile, different sizes of Mat are used, from 300 g/m² to 600 g/m².

DISCOVER FIBRAWORLD PRODUCTS!

GRP PROFILES & GRATINGS

Structural Profiles in GRP




The pultrusion technology allows to produce any type of profile shape, keeping in mind that the product must have a constant cross-section, it can not be thinner than 2 mm and it must fit in a rectangle with dimensions 1050×300 mm.

GRP CABLE TRAYS

Fibraworld - GRP Cable Trays




Fibraworld offers different GRP Solutions for Cable Management near to Railways, Highways and Tunnels. Thanks to their insulating and corrosion-free properties, GRP Cable Trays has an outstanding durability in the most aggressive environments.

GRP PROFILES & GRATINGS

The pultrusion technology allows to produce any type of profile shape, keeping in mind that the product must have a constant cross-section, it can not be thinner than 2 mm and it must fit in a rectangle with dimensions 1050×300 mm.

GRP CABLE TRAYS

Fibraworld offers different GRP Solutions for Cable Management near to Railways, Highways and Tunnels. Thanks to their insulating andcorrosion-free properties, GRP Cable Trays has an outstanding durability in the most aggressive environments.