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| Number | Title | Issue Date |
| 8133420 | Multi-segment expandable polymer compositions which expand in a controllable direction Expandable polymer compositions are used to reinforce or provide various types of insulation to cavities in structural elements. The polymer compositions include at least two different segments, which may or may not be joined. At least one of the segments will expan... | 03/13/2012 |
| 8048349 | Method for the preparation of foamed and crosslinked rubber The method of the present invention is adapted to foam and crosslink a raw material including a rubber, a crosslinking agent and a foaming agent. The method includes the following steps: (1) a first crosslinking and foaming step, placing the raw material into a firs... | 11/01/2011 |
| 7858002 | Method for injection expansion molding of thermoplastic resin An injection-foaming method for a thermoplastic resin comprising using an injection unit 30 provided with a hopper 35, a plasticizing cylinder 31 and a screw 32, and a mold 10 having a mold cavity 10a of changeable ca... | 12/28/2010 |
| 7240376 | Sports helmet The present invention provides a sports helmet, such as a football, hockey, lacrosse or baseball helmet. The helmet includes a shell having an outer surface, a front region, a rear region, and two side regions. A jaw flap extends from each ear flap towards the front... | 07/10/2007 |
| 7052634 | Method for making a foam sheet having ventilation holes A method for making a foam sheet having ventilation holes includes the steps of: (a) preparing first and second molds, each including lower and upper mold parts separably closed to each other so as to define first and second mold cavities for the first and second mo... | 05/30/2006 |
| 7033236 | Surfboard A method for manufacturing a surfboard includes providing a first member having a general surfboard shape, the first member comprising high-density ethyl vinyl acetate; locating a second member on a first exterior side of the first member, wherein the second member ... | 04/25/2006 |
| 7008578 | Method for production of extruded, polystyrene-based resin foam plate and extruded foam plate obtained thereby A method for production of an extruded, polystyrene-based foam plate wherein a polystyrene-based resin is heated and kneaded together with a blowing agent, a flame retardant and a nucleating agent in an extruder to obtain a foamable molten composition, and the foama... | 03/07/2006 |
| 6634624 | Device for multifoaming of expandable plastics A device for multifoaming expandable plastics, such as, for instance, EPS, EPE, EPP or polymer mixtures, includes at least one storage or supply assembly and a foaming vessel for the discontinuous or batchwise afterfoaming of the prefoamed expandable plas... | 10/21/2003 |
| 6527993 | Method for producing foamed-in-mold product of aromatic polyester based resin The present invention provides a process for producing a molded foam article of a crystalline aromatic polyester resin. The process is characterized by heating the surface temperature of a mold for cavity-molding to the temperature within a range of from ... | 03/04/2003 |
| 6524519 | Method of molding elastic doll heads and mold therefor A molding method and a mold therefor capable of forming a doll head of a shape exactly conforming to a mold by blow molding using a safe molding material. A split mold (2, 3) which has an inner surface formed to have a configuration conforming to a shape ... | 02/25/2003 |
| 6369120 | Acoustical insulation foams An acoustical insulation foam having, either with or without elastification, an Asker C hardness of less than about 65, a density of about 5 to about 150 kg/m3, a cell size of about 0.05 to about 15 mm, an open cell content of 0 to about 100 volume percen... | 04/09/2002 |
| 6348511 | Method and device for multifoaming of expandable plastics A process for multifoaming expendable plastics, such as, for instance, EPS, EPE, EPP or polymer mixtures, wherein prefoaming is effected in a first step and after foaming of already prefoamed material is effected in at least one further step. The process ... | 02/19/2002 |
| 6348167 | Method of making a surfboard A method for making a surfboard includes six steps of processes. The first step is to prepare and cut plastic plate material into a panel. The second step is to place it in a mold to hotly press to let the panel foam half. The third step is to take the ha... | 02/19/2002 |
| 6346207 | Process for preparing EVA foam A process for preparing EVA foam includes the steps of placing an amount of a kneaded composition in a mold such that the volume ratio of the kneaded composition to the mold cavity is about 0.15 to 0.5 and such that the kneaded composition is laid on the ... | 02/12/2002 |
| 6274069 | Multilayered seat having different hardnesses and provided with face material, and method of manufacturing same A seat, which is covered with a surface material and has a multilayer with different hardness, the air permeability, a good feeling on the surface and such a hardness that a weight of a person can be supported, is provided. The seat (1) is covered with a ... | 08/14/2001 |
| 6245267 | Methods for lowering the density and increasing the flexibility of thermoplastic foams A flexible, low density thermoplastic foam and a method for lowering the density and increasing the flexibility of a thermoplastic foam having a melting temperature and being either amorphous with a softening temperature or semicrystalline with a glass tr... | 06/12/2001 |
| 6228898 | Biodegradable resin foam and method and apparatus for producing same Foam forming techniques are capable of permitting foaming of biodegradable resin to be positively and uniformly accomplished to provide a biodegradable resin foam with satisfactory quality. The biodegradable resin foam is made of biodegradable resin a mai... | 05/08/2001 |
| 6187232 | Acoustical insulation foams An acoustical insulation foam having, either with or without elastification, an Asker C hardness of less than about 65, a density of about 5 to about 150 kg/m3, a cell size of about 0.05 to about 15 mm, an open cell content of 0 to about 100 volume percen... | 02/13/2001 |
| 6129798 | Process for manufacturing an ethylene vinyl acetate insole A process for producing an ethylene vinyl acetate insole involves weighing molding compounds for manufacturing the ethylene vinyl acetate insole. The molding compounds are mixed and rolled by means of a roller so as to form a sheet material. The sheet mat... | 10/10/2000 |
| 6114025 | Foam and film/foam laminates using linear low density polyethylene A polymeric composition to be used in producing foam. The polymeric composition comprises a linear low density polyethylene and a resiliency modifier resin. The linear low density polyethylene is in the amount of from about 1 to about 90 weight percent of... | 09/05/2000 |
| 5985191 | Method of forming an article via injection moulding, an article formed by the improved injection moulding method, and a mould tool for carrying out the improved injection moulding method A cup of plastics material incorporating foaming agent has thin wall portions, namely a base 101, a lower side wall 102 and an upper side wall 103. These portions have their wall thickness determined by mould part gap. The cup also has thick wall portions... | 11/16/1999 |
| 5985190 | Method and system for forming low-density polymer foam article A crystalline polymer resin, such as poly(ethylene terephthalate), is heated to melting. One or more blowing agents is selected wherein at least one of the blowing agents has a boiling point greater than the glass transition temperature for the resin and ... | 11/16/1999 |
| 5955015 | Two-stage process for making foam mouldings from tube blanks A technique of producing polyolefin foam is described. A two-stage process is described wherein the first stage involves expanding a preformed cylindrical tube comprising a polymer, blowing agent, cross-linking agent and blowing agent activator in an encl... | 09/21/1999 |
| 5916928 | Polymer-based porous foam An apparatus suitable for the continuous preparation of a polymer-based cellular foam sheet of a predetermined thickness wherein the foam is produced from a reaction product capable of curing at ambient temperature formed by the reaction of a reactant com... | 06/29/1999 |
| 5861214 | Thermoexpandable microcapsule and production The object of the present invention is to provide a thermoexpandable microcapsule which can be expanded at a lower temperature without decrease of various properties such as chemical resistance and heat resistance; said thermoexpandable microcapsule conta... | 01/19/1999 |
| 5851462 | Method for making a surfboard A method for making a surfboard includes a foamable material sheet cut into a number of panels and disposed in a mold device for hot pressing the panels and for expanding the panels to a prototype having a volume about 6 to 10 times greater than that of t... | 12/22/1998 |
| 5849339 | Apparatus for producing biodegradable resin foam Foam forming techniques are capable of permitting foaming of biodegradable resin to be positively and uniformly accomplished to provide a biodegradable resin foam with satisfactory quality. The biodegradable resin including foam is made of biodegradable r... | 12/15/1998 |
| 5849227 | Method for foam molding In foam molding for molding a foam-molded article from a foaming material, heat is applied while controlling the amount of foaming of the foaming material, control of the amount of foaming of the foaming material is halted, heating of the foaming material... | 12/15/1998 |
| 5830922 | Process for post-expansion of pre-expanded polyolefins beads Partially expanded polyolefin granules are post-expanded by a process comprising charging a vessel containing foamed polyolefin beads having a bulk density of from 20-450 g/l with an inert gas under a pressure of from 2-25 bar and at a temperature of from... | 11/03/1998 |
| 5821272 | Method for post-treatment of polyolefin resin pre-expanded particles Post-treatment method of polyolefin resin pre-expanded particles comprising: introducing the polyolefin resin pre-expanded particles foamed by using an inflammable blowing agent into an extraction vessel filled with steam previously; feeding an additional... | 10/13/1998 |
| 5763501 | Process for the production of multi-layer constructed coverings based on polyolefins with foamed intermediate layers A process for the production of at least one foamed layer of polyolefins comprising: polymerizing a polyolefin elastomer (POE) or polyolefin plastomer (POP) and optionally one or more additional polyolefins with a metallocene catalyst to form a polymerize... | 06/09/1998 |
| 5609953 | Plastic molded articles having resin fibers dispersed therein A method of forming a plastic molded article includes expansion molding of a plastic raw material mixed with a blowing material. In a first step, a first-stage expansion molding is used to form a core. This is followed by a second step in which a second-s... | 03/11/1997 |
| 5602188 | Biodegradable resin foam and method and apparatus for producing same Foam forming techniques capable of permitting foaming of biodegradable resin to be positively and uniformly accomplished to provide a biodegradable resin foam with satisfactory quality. The biodegradable resin foam is made of biodegradable resin consistin... | 02/11/1997 |
| 5417898 | Molding process for making toroidal manufactured articles from closed-cell, low-density, expanded elastomeric material A toroidal semifinished product (5) made of raw elastomeric material is semivulcanized in a semivulcanization chamber (4) defined between two half-molds (2, 3) disposed close to each other. A pressure, preferably equal to the pressure exerted by the gases... | 05/23/1995 |
| 5405563 | Process for producing leather-like thermoplastic polyester series resin sheet A leather-like thermoplastic polyester series resin sheet is disclosed, including a uniformly and finely foamed sheet comprising a thermoplastic polyester series resin, wherein said foamed sheet has cells having a diameter of substantially not longer than... | 04/11/1995 |
| 5385698 | Dimensionally accurate expanded foam casting pattern A method is disclosed for heating pre-expanded foundry pattern molding beads of polystyrene or the like in a stream of hot air to reduce the vapor-forming expansion agent content for the purpose of producing more dimensionally accurate, molded foam bead c... | 01/31/1995 |
| 5322652 | Method of large sphere production at zero gravity A method of creating large hollow spheres and other shapes and structures produced according to such method, such method including suspending in a zero gravity environment a molten material mixed with a blowing agent which is caused to foam, expanding int... | 06/21/1994 |
| 5310513 | Method for manufacturing a cross-linked thermoplastic resin foam There are provided a method and an apparatus for continuously manufacturing a cross-linked thermoplastic resin foam arranged as follows. A resin composition, which contains at least a thermoplastic resin, a foaming agent, and a cross-linking agent, is ext... | 05/10/1994 |
| 5281119 | Apparatus for the production of foamed polyolefin sheets An apparatus for the formation of a foamed polyolefin sheet provided with a cylindrical cooling device for cooling a foamed extruded tubular body at one end of an extruder, air outlets for increasing the internal pressure of the cooled foamed tubular body... | 01/25/1994 |
| 5271886 | Process and apparatus for rapid pre-expension and molding of expandable polymer particles A process and apparatus for rapidly expanding and molding carbon dioxide-impregnated polymer particles is disclosed. The process involves expanding the impregnated particles in a moving stream of pressurized saturated steam or super-heated steam, directin... | 12/21/1993 |
