Patent application number | Description | Published |
20110048571 | BLOW-MOLDED FOAM AND PROCESS FOR PRODUCING THE SAME - An object of the invention is to provide a blow-molded foam which has homogeneous foamed cells in size, is light in weight, and is excellent in surface smoothness, and a process for producing the same. The invention is directed to a blow-molded foam 1 having a wall portion formed in such a manner that a thermoplastic resin containing a foaming agent mixed therewith is subjected to blow molding. Herein, the wall portion has a closed cell structure in which a plurality of foamed cells are contained. The wall portion has an expansion ratio of not less than 2.0 times. The wall portion has an outer face having a center-line average surface roughness Ra of less than 9.0 μm. The foamed cell has a cell diameter having a standard deviation of less than 40 μm in a thickness direction of the wall portion. | 03-03-2011 |
20110056584 | LIGHT-WEIGHT AIR CONDITIONING DUCT FOR VEHICLE - [Problem] To provide a light-weight air conditioning duct for vehicle that is light in weight and excellent in mechanical strength. | 03-10-2011 |
20110101558 | METHOD FOR MANUFACTURING MOLDED FOAM - An object of the invention is to provide a method for manufacturing a molded foam which is lightweight and excellent in strength. According to the invention, a method for manufacturing a molded foam from a foamed parison includes: an extruding step of extruding a resin blend containing a foaming agent and a thermoplastic resin to form a foamed parison; an attaching step of closely attaching facing portions of an inner wall surface of the foamed parison to each other to form a foamed parison laminated body; a mold clamping step of sealing and mold clamping the foamed parison laminated body by clamping the foamed parison laminated body by split mold blocks; and a sucking step of sucking air between the split mold blocks to reduce a pressure between the split mold blocks, after the attaching step and the mold clamping step. | 05-05-2011 |
20110104414 | METHOD FOR MOLDING MOLDED FOAM, AND MOLDED FOAM - The invention provides a molded foam molding method capable of obtaining a molded foam in which pinholes may not be formed with ease even when a blow ratio is high and which has a high expansion ratio. The invention also provides a molded foam which includes no pinholes, is reduced in weight, and is excellent in heat insulating property. The molding method includes blending a polypropylene-based resin having an equilibrium compliance from 2.0 to 6.0 (10 | 05-05-2011 |
20110127688 | METHOD FOR MANUFACTURING MOLDED FOAM - A method for manufacturing molded foam which uses cheap materials, is light in weight and which is excellent in impact resistance. In the method for manufacturing molded foam, propylene homopolymer with a long chain branch, propylene ethylene block copolymer and low density polyethylene are mixed in the base resin at a prescribed mixing ratio. A blowing agent is added to carry outfoaming. A prescribed mixing ratio is determined based on the value arrived at by a multiplying melt tension of each material mixed with the melt flow rate and the Tensile Rupture Elongation. | 06-02-2011 |
20130164474 | METHOD OF FORMING HOLLOW BLOW-MOLDED FOAM AND SUCH HOLLOW BLOW-MOLDED FOAM - An object of the present invention is to provide a method of forming a hollow blow-molded foam and also provide such a hollow-molded foam, which are capable of improving a flow-rate efficiency of a fluid that flows through the inside of the hollow blow-molded foam. A foaming resin is sandwiched between molds so that a hollow blow-molded foam having a ventilation path is molded, and a fluid for use in cooling the hollow blow-molded foam is allowed to flow through the ventilation path so that the hollow blow-molded foam is cooled. | 06-27-2013 |
20130224414 | FOAM DUCT - A foam duct in which rigidity is improvable includes a cylindrical portion having an external contour of a polygonal shape and a projection in an inner surface side of the cylindrical portion, and thickness of wall portions of the cylindrical portion is larger in a portion in which the projection is formed than in a portion in which the projection is not formed. | 08-29-2013 |
20130224415 | FOAM DUCT - A foam duct to which a heat insulating property and a shock absorbing property can be is provided due to structure of the foam duct is a foam duct including foam resin and includes a high-foam wall portion having a higher expansion ratio than other wall portions. | 08-29-2013 |