Comparison of Applicability for process of Fiberglass Hand Lay Up,RTM and Compression Molding(SMC/BMC)

Comparison Hand Lay Up RTM SMC/BMC
Molding Temperature/℃ indoor temperature 40-60℃ or indoor temperature 130-150℃
Molding Cycle 1-4h 5-30min 1-15min
Production Efficiency(8h)/unit 2–3 16–90 50–400
Mold Type FRP FRP or metal metal
Mold Cost(based on 1) 1 2–4 5–10
Product Surface single surface shiny both surface shiny both surface shiny
Product Repeatability Human factors have a greater impact good very good
Product Dimensional Accuracy Human factors have a greater impact good very good
Ration between Resin and Fiber Human factors have a greater impact good very good
Filler Content high low high
Release Agent external demoulding both external and internal demoulding internal demoulding
Pressure/MPa contact pressure 0.1–0.25 4–10
Analysis of reasons for Warpage of Plastic Injection Molding Products

With the development of the plastics injection molding industry, people have higher and higher req……

In the manufacturer process of Hand Lay Up after Resin gels,why does it become soft,non-hardened or low strength?

1.Low amount or active ingredient of curing agent and accelerator in hand lay up process. The amou……

Many small surface holes–Technical Problem of Fiberglass Compression Molding

Condition Description Reasons Solution 1 if there are too many small holes in the surface it ……

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