High-Quality FRP Gel Coat Sheet Making Machine from China Suppliers | Factory Automatic Production Line
Raw Material
| No. | Name | Common Specifications | Core Function | Remarks |
|---|---|---|---|---|
| 1 | Unsaturated Polyester Resin (UPR) |
Viscosity: in Winter: 200—280 Mpa.s in Summer: 250—350 Mpa.s |
As the resin matrix, it binds various reinforcing materials, determines the corrosion resistance, temperature resistance and basic mechanical properties of the sheet, and serves as the core carrier for molding. | Divided into general-purpose, corrosion-resistant and flame-retardant types by application, suitable for different scenario needs. |
| 2 | Fiberglass chopped roving | E-glass (alkali-free yarn) | Cooperates with chopped mat for reinforcement, enhances the tensile strength and flexural strength of the sheet, and can be laid in layers according to the thickness and load-bearing requirements of the sheet. | Commonly used in the production of high-strength, high-load sheets, such as FRP water tanks and cover plates. |
| 3 | Biaxially Oriented Polyester Film (BOPET film) | Thickness 19μm-25μm | Molding auxiliary material, plays the role of demolding and shaping, ensures the surface finish of the sheet, avoids raw materials adhering to the mold, and reduces surface defects. | Disposable, suitable for various molding processes such as hand lay-up and compression molding. |
| 4 | Methyl Ethyl Ketone Peroxide Solution (MEKP) | Reactive Oxygen 9---10% | Curing agent, initiates the cross-linking and curing reaction of UPR resin, promotes the resin to convert from liquid to solid, and realizes the molding and shaping of the sheet. | Flammable and explosive, must be stored separately, and the addition ratio must be strictly controlled during use. |
| 5 | Cobalt-based Additives | Cobalt content 0.6-1% | Accelerates the curing reaction rate of MEKP, adjusts the curing time (adapts to 5-30 minutes molding demand), and ensures uniform and sufficient curing. | The addition amount must match MEKP; excessive amount may cause sheet embrittlement. |
Advantage of FRP gel coat sheet
Resistant to UV, rain, high and low temperatures. It does not fade, crack, or become brittle even after long-term outdoor use.
Waterproof, acid and alkali resistant, ideal for factories, warehouses, farms and coastal areas.
Lighter than metal and tile materials while maintaining good impact resistance and load capacity.
Provides soft natural lighting, reduces indoor temperature, and saves energy for workshops and buildings.
The wave structure ensures fast installation, strong waterproof performance, and almost no later maintenance cost.
Details of Machine
This system includes resin tanks(1pc), resin pumps, and a conjoined pump for metering auxiliary.
This system can control the thickness of the sheet and significantly reduce the bubbles within it in this area. The rollers in this system play the role of eliminating the bubbles.
The heating oven cures and shapes FRP gel coat sheets efficiently with even, stable temperature control. It ensures fast, thorough solidification, improving sheet hardness, flatness and surface gloss. It boosts production efficiency, ensures consistent quality, enhances weather and corrosion resistance, and supports stable, high-speed continuous production.
This system automatically and evenly applies gel coat onto PET films. It forms a durable protective layer, preventing fading and cracking. Stable output ensures surface finish, greatly enhancing appearance, durability, and market competitiveness.
equipped with air fans to quickly lower the temperature of the FRP sheet and prevent from yellowing.
Pulling the sheet forward and provide power for the entire machine.
The cutting system accurately cuts FRP gel coat sheets to fixed lengths and sizes with high precision. It features stable, automatic operation, ensuring clean, smooth edges without burrs or deformation. It improves product uniformity, reduces material waste, enhances production efficiency, and meets customized size requirements for mass production.
RFQ
Frequently Asked Questions
UPR serves as the resin matrix that binds reinforcing materials. It determines key physical properties such as corrosion resistance, temperature tolerance, and mechanical strength, acting as the structural core for molding.
The gel coat system automatically and evenly applies a protective layer onto PET films. This layer prevents fading, cracking, and weathering, significantly enhancing the durability and surface finish of the FRP sheets.
The system regulates sheet thickness and utilizes rollers to eliminate internal air bubbles. This ensures the structural uniformity of the sheet and prevents surface defects during continuous production.
Yes. Due to their strong corrosion resistance, these sheets are waterproof, acid-resistant, and alkali-resistant, making them ideal for chemical warehouses, agricultural farms, industrial factories, and coastal applications.
Absolutely. The integrated cutting system automatically cuts the sheets to fixed lengths and sizes with high precision, meeting custom dimension requirements for various construction needs.
The air cooling system is equipped with powerful air fans that quickly lower the temperature of the solidified FRP sheets as they emerge from the heating oven, preventing thermal yellowing and maintaining color stability.