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What are the main requirements on PP resin in LFT process?
PP resin with better flowability is required. If the melt flowability rate is too low, the mechanical properties are optimized while the flowability will be bad; if the melt flowability is too high, the mechanical properties will be compromised. So it is vital to choose the proper PP resin. It is recommended that the melt flowability rate should be 50-80g/min.
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Can LFT products be used in external unwinding process?
Yes. For example, 352A is now used by many of our customers in external unwinding process. 352A with an inside paper roll can be directly used by placing it on the equipment.
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What’s the difference between 386 and 386T?
386 is Jushi’s older product, which is compatible with multiple resin systems and is suited in the process of filament winding, weaving, and pultrusion.386T is launched on the basis of E6 glass while maintaining the sizing system of 386. The excellent properties of E6, such as high strength, high modulus, and excellent chemical corrosion resistance, offers 386T a performance improvement when compared with 386. -
As for the SMC roving, what’s the difference between 440, 442, 458A, 440A, 456, and 410?
440: A kind of general purpose Assembled Roving for SMC is mainly used to produce large structural parts such as automotive headliner;442: Mainly used in manufacture of pigmentable SMC product with high surface quality, such as ceiling tile. Low LOI content; suitable for Asian markets;458A: Mainly used in manufacture of pigmentable SMC product with high surface quality, such as bathtub; High LOI content; Mainly for North American markets;440A: Assembled roving especially designed for automotive headliner. It is not recommended to use 440A in SMC processes.456: Suitable to manufacture Class A SMC product.410: Excellent hydrolysis resistance, mainly for manufacture of SMC bathroom fixtures, such as bathtub, enclosure panels, etc; mainly for Japan market; -
As for the roving for Hobas pipe, what’s the difference between 622 and 622A?
622: Fast wet-out, and low resin absorption;622A: Fast wet-out, excellent acid resistance, consistent color of the finished composite product. -
As for Assembled Roving for Spray-up, what’s the difference between 178, 180, 170, and 172?
178: is designed for high speed robotic spray-up process. The filament diameter is 11 um. It is easy to process with low tension and no spring-back in sharp corner;180 is spray-up roving for general purpose, which is more suited in composite products with less sharp corners. The filament