Improvements in Furniture Mould And Materials With More Free Fl

  • Improvements in Furniture Mould(FURNITUREMOULD) and the use of more free-flowing grades are ways to reduce the impact of weld lines, but the main factor involved is finding the best processing conditions. With regard to furniture mould, it is rarely advantageous to feed from two or more doors.

    This can aid in concentricity, but it will almost certainly result in a weld line that is at right angles to the line connecting the two doors. Side gates, ie a single hole in the component, almost always produce a weld line on the opposite side of the gate. When the mold has multiple holes, the largest diaphragm gate will help reduce the effect because the overflow well will exceed the weld line, but each smaller hole will produce its own weld line pattern.

    Furniture mould temperature control helps to reduce the effect, and the maximum feasible temperature is usually almost eliminated. However, for crystalline plastics, high mold temperatures not only increase crystallinity, but also increase the size of the crystal, and may ultimately result in a brittle component that is even less powerful than the strength component with weld lines.

    The most successful way to solve the weld line problem is to try to arrange for the two material streams to meet, while their front ends can still fuse together. It involves the proper combination of mold and cylinder temperatures, fast injection and furniture mold filling, and ensures adequate mold venting.

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