739 results about "Transfer molding" patented technology

Main chain thermotropic liquid crystal esters, ester-imides, and ester-amides were prepared from AA, BB, and AB type monomeric materials and were end-capped with phenylacetylene, phenylmaleimide, or nadimide reactive end-groups. The resulting reactive end-capped liquid crystal oligomers exhibit a variety of improved and preferred physical properties. The end-capped liquid crystal oligomers are thermotropic and have, preferably, molecular weights in the range of approximately 1000-15,000 grams per mole. The end-capped liquid crystal oligomers have broad liquid crystalline melting ranges and exhibit high melt stability and very low melt viscosities at accessible temperatures. The end-capped liquid crystal oligomers are stable for up to an hour in the melt phase. These properties make the end-capped liquid crystal oligomers highly processable by a variety of melt process shape forming and blending techniques including film extrusion, fiber spinning, reactive injection molding (RIM), resin transfer molding (RTM), resin film injection (RFI), powder molding, pultrusion, injection molding, blow molding, plasma spraying and thermo-forming. Once processed and shaped, the end-capped liquid crystal oligomers were heated to further polymerize and form liquid crystalline thermosets (LCT). The fully cured products are rubbers above their glass transition temperatures. The resulting thermosets display many properties that are superior to their non-end-capped high molecular weight analogs.

Manufacturing method of decorated molding article is provided. The manufacturing method of decorated molding article includes the following steps. A hard coating layer is formed on a substrate. The hard coating layer has an uneven surface and a planar surface, wherein the substrate contacts with the planar surface. A pattern layer is formed on and completely covers the uneven surface of the hard coating layer. An adhesive layer is formed on the pattern layer so as to form a decoration film. A transfer molding process is performed such that the decoration film adheres to an article through the adhesive layer. The transfer molding process includes performing a heating procedure such that the substrate is separated from the planar surface of the hard coating layer.

A method of encapsulating an article having first and second surfaces, includes positioning a first molding section in a sealing relationship with the first surface of the article and positioning a second molding section adjacent the second surface of the article. The first molding section is filled first thereby forcing the second surface of the article into a sealing engagement with the second molding section. The second molding section is then filled.