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Mold compression force

This low pressure process, also known as elastic reservoir molding, consists of making basically a sandwich of plastic-impregnated open-celled flexible polyurethane foam between the face layers of fibrous reinforcements. When this plastic composite is placed in a mold and squeezed, the foam is compressed, forcing the plastic outward and into the reinforcement. The elastic foam exerts sufficient pressure to force the plastic-impregnated reinforcement into contact with the heated mold surface. Other plastics are used. [Pg.503]

The main component of the reciprocating screw injection molding machine. It may have various sizes, lengths, and compression ratios. It is used to feed, compress, melt, and meter the resin for injecting into the mold cavity. Basically divided into 3 major sections feed section, deep screw depths to convey the resin into the next screw s section transition section, gradually decreasing screw depths when resin is compressed, forced against the barrel s surface, and melts and... [Pg.2259]

Force fors, fors [ME, fr. MF, fr. (assumed) VL fortia, ff. L fortis strong] (14c) n. (1) Either half of a compression mold (top force or bottom force), but usually the half that forms the concave surfaces of the molded part. (2) The male half of the mold, which enters the cavity and exerts pressure on the resin, causing it to flow. (3) A basic familiar quantity, familiar to everyone, customarily defined as that which changes a body s state of rest or motion, according to Newton s second law of motion ... [Pg.430]

Force. The male half of the mold which enters the cavity, exerting pressure on the resin and causing it to flow (also referred to as punch ) either part of a compression mold top force and bottom force. [Pg.355]

Compression mold upper mold half (male mold or force) (2) press table (3) press cylinder (4) press tie bars (5) compression mold lower mold half (female mold) (6) compression molding brace (7) ejector cylinder... [Pg.80]

A mold basically consists of an upper and lower half. In the normal course of events, the lower half is clamped to the press table, and the top part is attached to the press force. The guidance of both mold halves to each other is ensured by appropriately hardened guide elements. Asymmetric part geometry can induce considerable compressive forces into the guide elements. Therefore, they need to be held to a high tolerance of dimensional stability. [Pg.82]


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