Fiberglass Reinforced Plastic (FRP)Bridge架Molding Process

The molding process of glass-reinforced plastic (GRP) bridge trays is the foundation and condition for the development of the GRP bridge tray industry. As the application fields of GRP bridge trays expand, the industry has seen rapid development, with its old molding processes continually improving and new molding methods emerging.

The aforementioned methods are applicable to the production of both thermosetting and thermoplastic fiberglass bridge decks, depending on the resin matrix material of the chosen fiberglass. Some processes are suitable for both.
FRP bridge truss molding process features: Compared to processing technologies of other materials, the molding process of composite materials has the following characteristics:

(1) Material manufacturing and product shaping are completed simultaneously. Generally, the production process of glass fiber reinforced plastic bridge structures is also the shaping process of the products. The properties of the material must be designed according to the usage requirements of the products. Therefore, when manufacturing materials, designing proportions, determining fiber laying and shaping methods, it is necessary to meet the physical and chemical properties, structural shapes, and appearance quality requirements of the products.

(2) The molding process is relatively simple. Generally, the resin matrix of thermosetting fiberglass bridge structures is a flowing liquid before molding, and the reinforcing material is soft fibers or fabrics. Therefore, producing fiberglass bridge structures with these materials requires far fewer processes and equipment than other materials. For certain products, a single mold is sufficient for production.