Sulfibra Compósitos




Sheets and Rovings



/Used in the lamination process for the construction of pieces in general such as:

• Manufacture of products made of fiberglass.
• Repairs in general.
• Coating in general.
• Others.
• Laminations with Fiberglass and Resins.
• Manufacture of products made in Fiberglass such as Sealed Boxes, Water Tanks etc.
• Repairs to Water Tanks, Bumpers etc.
• Coatings in general (Styrofoam for example).
 
Useful Information

Results in a thickness of approximately 1mm per laminate layer.
 
Greater Performance and Flexibility compared to Sheet 450, as a result of its thinner filaments.
   
• Good resin wettability.
• Low marking on laminate.
• There is no restriction on the deadline for the use of fiberglass when they are stored at room temperature and in their original packaging.

Can be used with epoxy or polyester resin.

Sheet 450

Useful Information:


– Results in a thickness of approximately 1mm per laminate layer;
    
• Good resin wettability.
• Low marking on laminate.
• There is no restriction on the deadline for the use of fiberglass when they are stored at room temperature and in their original packaging.


Can be used with epoxy or polyester resin.

Sheet RTM

Roving

Fiberglass cutting rovings intended primarily for gun and continuous lamination processes are manufactured in two stages. In the first, spools with several threads or ends are spun. These yarns are obtained by placing separating combs just below the sizing applicator (surface treatment), dividing the filaments of the die into bundles of typically 100 to 200 filaments. These coils have a biconical shape and are called pies or skeins. In a second step, the rovings of these pies are gathered and rolled to form a new coil, this time cylindrical, composed of many cables.
 
The linear density of the roving (Tex) and the number of ends define, together with the sizing, the product technically. Linear roving densities typically range from 2,400 to 4,400 tex.

Cutting rovings are chopped by cutter assemblies designed for each application. The most used cut lengths in these applications are in the range of 0.5” to 2”. In all cases, the objective is to form a sheet with in-plane isotropic properties. This way, the chopped fibers must be able to be distributed evenly in the mold or machine plane, according to the considered process.
 
The technical requirements vary for each application, but, in general, these rovings must be easy to cut, have low down and static electricity generation, good dispersion (no tendency to agglomeration when chopped) and good compatibility (or wettability) with the polymer matrix considered.

Kinds of Rovings:

Roving 2400; 3200
Roving 3900; 4000
Roving P243-3200
Roving 4400; 2200; 1100




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