simultaneously heats, melts, mixes and conveys thermoplastic material from an inlet port at which the material is received in solid particulate form, to a discharge port at which the material is in a substantially liquid state. A die particularly adapted for the continuous extrusion of an elongated member having internal walls shaped by surfaces within the die cavity is also disclosed.
NON-TOXIC, ENVIRONMENTALLY BENIGN FIRE EXTINGUISHANTS Guglielmi Elio, Vancouver, British Columbia, CANADA PCT No. PCT/CA92/00104 Sec. 371 Date Nov. 18, 1994 Sec. 102(e) Date Nov. 18, 1994 PCT Filed Mar. 10, 1992 PCT Pub. No. WO9307758 PCI Pub. Date Sep. 16,1993. Flooding fire extinguishing agents which are non-toxic and environmentally safe in both natural form and in degraded form which may occur as a result of exposure to fire are disclosed. The flooding fire extinguishing agents are rich in low boiling unsaturated chlorofluorocarbon compounds and have low liquid viscosities.
5534358 IRON-PLATED ALUMINUM ALLOY PARTS Troup-Packman Sue, Calabasas, CA, UNITED STATES assigned to Hughes Aircraft Company A process for plating aluminum alloy substrates, such as 390 aluminum alloy pistons, with iron comprises (a) plating on the aluminum substrate a layer of zincate from a zincate bath; (b) plating on the zincate layer a layer of nickel from an electroless nickel bath; (c) plating on the nickel layer a layer of iron from an iron ammonium sulfate bath; and (d) plating on the iron layer a layer of tin from an alkaline tin bath. During the electroless plating, the zincate layer, which protects the underlying aluminum against oxidation, is sacrificed. All of these baths are environmentally much safer than cyanide and chloride. They are also cost effective and can be utilized in a totally closed loop plating system.
5534172 CUTTING FLUID Perry Phillip G; O’Dell Gene W; van Asten Ronny W F Webster, NY, UNITED STATES assigned to Xerox Corporation An aqueous-based cutting fluid for machining photoreceptor substrates contains: at least one antioxidant; one or more surfactants, at least one of which is a polysiloxane surfactant; at least one lubricant; and water. The cutting fluid can also optionally contain one or more biocides. The cutting fluid is environmentally safe, non-toxic and biodegradable and can be removed in a postmachining cleaning process using only high quality distilled water.
5534379 ENVIRONMENTALLY FRIENDLY TONER COMPOSITION
Dalal Edul N; Blaszak Sue, E; Gruber Robert L; Bertrand Jacques C; Ciccarelli Roger N, Webster, NY, UNITED STATES assigned to Xerox Corporation
METHOD AND APPARATUS FOR FORMING AN ARTICLE FROM RECYCLABLE PLASTIC MATERIALS
Toner compositions are formed by selecting a portion of at least one metal-containing pigment or dye and a portion of at least one metal-free pigment or dye, at least one pigment or dye containing a regulated metal and/or material and at least one pigment or dye containing a non-regulated metal and/or material, at least two pigments or dye each containing a different regulated metal and/or material, or pigments or dyes which contain different regulated metals and/or materials in different concentrations to provide required toner properties while maintaining metal, regulated metal and/or regulated material content of a toner composition below a prescribed level, and dispersing the pigments together in the composition.
Burrus Thomas N, Brenham, TX, UNITED STATES assigned to Natural Resource Recovery Inc A method for forming an article from recyclable plastic materials includes progressively heating thermoplastic solid particles simultaneously with mixing, melting and conveying the particles, prior to delivery of molten material to an extruder. The process is particularly suitable for the continuous extrusion of elongated members having a plurality of internal wall surfaces defining elongated cavities within the member. The apparatus embodying the present invention includes a heated mixer-conveyor that
J. Cleaner Prod.,