Abstract: A method and apparatus for the cleaning of plastic flakes to be recycled. Water is added to the plastic flakes and high shear agitator is provided so that dirt, paper and other contamination are removed from the surface of the plastic flakes. The contaminant containing water is then separated from the cleaned plastic flakes. Batch and continuous embodiments of the present invention are disclosed.

Abstract: Apparatus for producing resin-impregnated fiber tow or strand in the form of prepreg tape. The apparatus includes unique coating wheels for sunface-coating the strand with molten, flowable resin and a kneading section to work the strand and disperse the molten resin uniformly among and between the individual fibers of the strand. The strand, after chilling, has good dimensional stability and is useful as prepreg in forming composite structures.

Abstract: Process for producing resin-impregnated fiber tow or strand in the form of prepreg tape which includes unique coating wheels for surface-coating the strand with molten, flowable resin and a kneading section to work the strand and disperse the molten resin uniformly among and between the individual fibers of the strand. The strand, after chilling, has good dimensional stability and is useful as prepreg in forming composite structures.

Abstract: Described herein is an improved process for rapidly fabricating fiber reinforced thermoset resin articles comprising: (a) providing in a heatable matched metal die mold a bonded web of one or more fibers with a melting point or a glass transition temperature above about 130.degree. C., (b) providing in an accumulator zone a liquid body of a thermosettable organic material having a viscosity determined at 120.degree. C.

Abstract: A method of making a resin-impregnated molded fiber reinforced article including use of a thermosetting resin having a specified low viscosity and fast curing time with a specified fiber content for producing an article with improved strength.

Abstract: A process is disclosed for the production of injection molded thermoplastic articles having reduced combustibility comprising: maintaining a mold cavity at a pre-selected back pressure sufficiently high to substantially prevent foaming of a thermoplastic melt to be injected therein; injecting thermoplastic melt into said mold cavity under a pressure in excess of said back pressure to fill said mold cavity; said thermoplastic melt containing from about 50 to 70% by weight of alumina trihydrate and from about 1 to 12% by weight of water as a liquid processing aid.

Abstract: A process is disclosed for producing a structural foam article having a surface that reproducibly and faithfully replicates the surface of the mold within which the article was made. The process is an improvement in the "low pressure" process for producing structural foam, wherein the improvement resides in introducing the molten mixture of foamable thermoplastic material and blowing agent into the mold under such conditions that a no-slip boundary condition is maintained at an interface between the flowing thermoplastic and a predetermined portion of the interior surface of the mold, and by maintaining the temperature at said interface at or above a certain temperature (termed "replication temperature"), while the thermoplastic is flowing in the mold.