Smart Fiberglass Solutions Contact Us Now
RuiShun
1000 M
ISO9000，CE,EN13501,SGS,etc
0.06 – 0.4mm(customizable)
White
7-15 days
A Grade
1000 – 2200mm (custom widths available)
60–400 g/m² (customizable)
Product Description
RUISHUN Prepreg Fiberglass Cloth is a high-performance composite reinforcement material made by impregnating premium E-glass woven fabric with a precisely controlled epoxy resin system. It is designed for advanced composite manufacturing where consistent resin content, high strength, dimensional stability, and reliable processing are required.
The fabric undergoes dipping, rolling, controlled heating, B-stage curing, laminating, and coiling processes to ensure uniform resin distribution and stable mechanical performance. During final molding under heat and pressure, the material cures into a rigid composite structure with excellent strength, flame retardancy, electrical insulation, and corrosion resistance.
RUISHUN supplies prepreg glass fiber fabric for aerospace, electronics, automotive, EV, wind energy, marine, construction, defense, sports equipment, and advanced industrial composite applications.
Prepreg fiberglass cloth, also called pre-impregnated fiberglass fabric, is E-glass woven fabric pre-saturated with a partially cured epoxy resin system. Unlike traditional wet lay-up fiberglass, prepreg materials provide more accurate resin-to-fiber ratio, lower void content, cleaner processing, and more consistent mechanical properties.
This makes epoxy prepreg fiberglass cloth ideal for demanding composite manufacturing environments where strength, safety, repeatability, and dimensional accuracy are critical.
High-strength continuous filament E-glass yarns are woven into plain, twill, or satin fabric structures according to application requirements.
Specialized epoxy resin systems are prepared, including standard, flame-retardant, high-temperature, or customized mechanical performance formulations.
The fiberglass fabric is uniformly impregnated with epoxy resin to achieve accurate resin content and consistent composite performance.
Controlled heating partially cures the resin, giving the prepreg material proper tackiness and flexibility for lay-up and molding.
Protective release films are applied before rolling to support clean handling, transportation, and refrigerated storage.
During autoclave curing, hot press molding, vacuum bagging, or compression molding, heat and pressure complete the curing process and form the final composite structure.
Precise resin-to-fiber ratio for stable composite performance
High tensile and flexural strength from continuous fiber reinforcement
Excellent fatigue resistance for dynamic load structures
Low curing shrinkage for dimensional stability and tight tolerance control
Optional UL94 V-0 flame retardancy depending on resin formulation
Good corrosion and chemical resistance against moisture, acids, alkalis, and harsh environments
Lightweight structure with high strength-to-weight ratio
Excellent formability for complex mold shapes
Good electrical insulation from E-glass fiber reinforcement
| Item | Specification |
|---|---|
| Product Name | Prepreg Fiberglass Cloth / Epoxy Pre-Impregnated E-Glass Fabric |
| Base Fabric | E-glass woven fabric |
| Weave Type | Plain / Twill / Satin |
| Resin System | Epoxy, standard / flame-retardant / high-temperature |
| Resin Content | 30%–45%, customizable |
| Flame Rating | UL94 V-0 optional, depending on resin system |
| Curing Temperature | 120°C–180°C |
| Storage | Refrigerated storage recommended |
| Roll Width | 1000–2200 mm typical, customizable |
Structural reinforcement panels
Interior cabin components
Lightweight composite structural parts
Body panels
Battery enclosures
Chassis reinforcements
Lightweight structural components
Boat hulls
Deck panels
Corrosion-resistant marine structures
Wind turbine blade layers
Structural composite reinforcements
Electrical insulating panels
Flame-retardant housings
Transformer insulation components
Reinforcement laminates
Anti-corrosion panels
Structural strengthening materials
Protective composite panels
High-performance sports equipment
Lightweight structural frames
| Comparison Item | Prepreg Fiberglass Cloth | Regular Fiberglass Cloth |
|---|---|---|
| Resin System | Pre-impregnated with controlled epoxy resin | Requires manual resin application |
| Resin Content | Precise and consistent | Depends on operator and process |
| Void Control | Lower void content with proper curing | Higher risk of uneven impregnation and voids |
| Processing Cleanliness | Cleaner lay-up process | Messier wet lay-up process |
| Best For | High-performance structural composites | General FRP, hand lay-up, repair and reinforcement |
Prepreg fiberglass cloth is rolled with protective release film on both sides.
Rolls are packed in moisture-proof aluminum foil vacuum bags.
Outer packaging can use export-grade cartons or wooden crates if required.
Custom labeling and OEM packaging are available.
Recommended storage temperature: 18°C or below.
Freezer storage below -18°C is recommended to prevent premature curing and extend shelf life.
Typical shelf life: 6–12 months depending on resin system.
Avoid direct sunlight and high humidity exposure.
Standard lead time: 7–20 days depending on order volume and customization.
Shipping options include sea freight, air freight, and express courier.
Export documentation support is available.
Strict resin content control for stable composite performance
Consistent B-stage curing quality
Customizable epoxy resin systems
Factory-direct manufacturing and bulk supply support
OEM production for industrial and structural applications
Technical assistance for curing, molding, lamination and composite applications
RUISHUN supports customized composite solutions for aerospace, electronics, automotive, wind energy, marine, industrial, and structural manufacturing requirements.
Prepreg fiberglass cloth is pre-impregnated with epoxy resin and partially cured, providing precise resin content and consistent performance. Regular fiberglass cloth requires manual resin application during lay-up, which can lead to inconsistent quality.
Yes. To prevent premature curing, prepreg materials should be stored in a freezer, typically below -18°C, until use. Storage temperature and shelf life depend on the resin system.
Yes. RUISHUN offers customized epoxy systems including flame-retardant, high-temperature resistant, and special mechanical performance formulations.
Prepreg fiberglass cloth is compatible with autoclave curing, hot press molding, vacuum bagging, and compression molding.
With flame-retardant epoxy systems, the final cured composite can reach UL94 V-0 rating depending on resin formulation and composite structure.
Prepreg fiberglass is commonly used in aerospace, automotive, electronics, wind energy, marine, infrastructure, defense, sports equipment, and advanced composite manufacturing industries.
Contact RUISHUN with your required base fabric, weave type, resin system, resin content, curing temperature, flame rating, roll width, storage requirements, application, and order quantity. Our team can recommend a suitable prepreg fiberglass cloth solution for structural composites, aerospace parts, EV components, electronics, marine parts, wind energy, or OEM industrial production.
