Method and apparatus for extrusion molding fiber-and cement-containing W/O type emulsion
October 22, 2008. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References 3168509 3267518 3532781 3901991 Manufacture of cement-resin composite articles Cementing compositions and concretes and mortars derived therefrom Structural building components and method for production on the basis of laterite Method for manufacturing heat-cured molded articles from cement Casting of articles from compositions containing calcined gypsum and Portland cement Process for the manufacture of rotationally-symmetrical components from short-fibered molding material InventorsAssigneeApplicationNo. 039007 filed on 04/15/1987US Classes:264/108, ORIENTING OR ALIGNING SOLID PARTICLES IN FLUENT MATRIX MATERIAL264/211.24, Curing or polymerization in the extruder (includes incomplete polymerization or curing, or coagulating rubber)264/333, Inorganic hydraulic settable material shaping425/382.4, Including restriction upstream of shaping orifice and downstream of primary pressurizing means425/467Core, pin or insert memberExaminersPrimary: Thurlow, JefferyAttorney, Agent or FirmForeign Patent References
International ClassB29C 047/12Foreign Application Priority Data1986-04-26 JPAbstractIn the case of extruding a W/O type emulsion having a high viscosity obtained by stirring a mixture of a vinyl monomer solution composed of a vinyl monomer which is water insoluble and in a liquid state at normal temperature, a surface active agent having a hydrophilic-lipophylic balance of 3 to 6, and a polymerization catalyst with water, cement, and synthetic fibers through a die, at least one rectifying plate having a given form is disposed in the die near the outlet thereof to direct the synthetic fibers in the W/O type emulsion to the extruding direction.When the tabular plate obtained by extrusion-molding the W/O type emulsion by the method of this invention is hardened and dried, a light-weight and high-strength plastic concrete suitable for building materials is obtained.Field of SearchORIENTING OR ALIGNING SOLID PARTICLES IN FLUENT MATRIX MATERIALNonresinous material only (e.g., ceramic, soap, cellulose, etc.) Curing or polymerization in the extruder (includes incomplete polymerization or curing, or coagulating rubber) Inorganic hydraulic settable material shaping Shaping by extrusion REACTIVE GAS OR VAPOR TREATMENT OF WORK FORMING ARTICLES BY UNITING RANDOMLY ASSOCIATED PARTICLES Sintering or heat fusing particles Of organic material Of inorganic materials Adjustable shaping orifice or shape imparting insert member (e.g., core, etc.) Core, pin or insert member Within or at forming means Within pressurizing chamber Including restriction upstream of shaping orifice and downstream of primary pressurizing means | |
