Analysis of Production Principle of Glass Fiber Chopped Strand Mat (one)
 
 
Aug,24,2022
 

In the previous article, the first four parts of the production principle of chopped strand mat were introduced. Today, let's learn about the rest of the content.

Five, the factory production has the following parts:

1. Fiber creel

2. Short cutting process

3. Forming section

4. Adhesive Application System

5. Drying box

6. Cold pressing section

7. Trimming and Rewinding

 
1. Raw materials
The glass commonly used in FRP products is a calcium-alumina borosilicate with an alkali content of less than one percent. It is often referred to as "E" type glass because it was developed for use in electrical insulation systems.
Glass fibers are produced by transporting molten glass from a melting furnace through a platinum jacket containing a large number of small holes, where it is drawn into glass filaments. Filaments for commercial use are typically between 9 and 15 microns in diameter. Before the filaments are aggregated into fibers, the emulsion is attached. The fibers are very strong - the tensile strength is exceptionally high. They also show good chemical and moisture resistance, have excellent electrical properties, are immune to biological attack, and do not burn, with a melting point of 1500°C - excellent performance in plastic reinforcements.powder mat
Fiberglass can be used in a variety of ways, chopped into short lengths ("chopped strands"); aggregated into loosely bound ropes ("rovings"); woven into various fabrics, continuous by twisting and doubling the yarn yarn strands. In the UK, a widely used fibreglass material is chopped strand mat, which consists of strands of fibreglass chopped to about 50mm, held together in mat form using a polyvinyl acetate or polyester binder. The glass fibre mat can range in weight from 100 gsm to 1200 gsm and is useful for general reinforcement.
 
2. Sizing section
The glass fibers are applied from the settling section to the conveying process via the conveyor belt, where the binder is applied. The settling section needs to be kept clean and dry. Combining the powders is carried out by two applicators of powder binders, and a series of demineralized (distilled) water sprays.
On the glass fiber mats, the upper and lower sides are lightly sprayed with distilled water. This operation is a necessary step for better adhesion of the adhesive. Special powder applicator ensures powder distribution. A vibrator between the two applicators enables powder transfer to the underside of the felt.
 
3. Combine with emulsion
The curtain system used ensures adequate spreading of the adhesive. Excess adhesive will be recovered by a special suction system.
This system allows air to be carried away through the pad and adhesive. The binder will be evenly distributed and excess binder will also be eliminated. Obviously, the adhesive can be reused after filtering the dirt.
The binder is stored in a container in the mixing chamber and transported from a small tank near the felt factory via low pressure piping.
Special devices will keep the tank level constant. The recycled adhesive is also delivered to the tank. The pump transports the adhesive from the storage tank to the gluing section.
4. Production
glass fiber emulsion chopped strand mat is a non-woven fabric made of filaments chopped into 25-50 mm long, randomly laid in a horizontal plane, and held together by means of suitable adhesives. There are two types of binders, powder and emulsion. While the physical properties of composites are determined by the composition of fiber diameter, the choice and amount of binder, and the use of felt and formability.
Chopped strand mat is produced from fiberglass manufacturers' strand cakes, but some often use roving, in part to save space.
Very important for the quality of the mat are good fiber cut-off properties and low static electrical load and low glue usage.
 
 
 
Hebei Yuniu glass fiber mat manufacturers  is a professional glass fiber enterprise, established in 2002, with a complete domestic and foreign sales team.

    Our company mainly produces and sells E-glass fiber products, such as direct roving, plain weave fabric, chopped strand, chopped strand mat,spray up roving,multiaxial fabric, chop strand fiberglass mat,etc. The products have been recognized by many domestic and foreign customers for a long time.
 
 
 
#Fiberglass #materials
 
 
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