Jun , A radome constructed using a rigid or semi rigid foam core and sandwich construction is described The foam Foam in place radomes (polyurethane foam) were popular in the s, but its tendency to crumble, poor fatigue and poor impact properties quickly gave foam radomes an unfavorable name.
Sep , The composite materials include a polyurethane made from the reaction of an isocyanate and a mixture of polyols, and coal ash (e.g fly ash) material of claim , wherein the building material is selected from the group consisting of siding material, carpet backing, building panels, and roofing material.
Apr , Expanded polystyrene (EPS) is typically used for the insulation, with extruded polystyrene and polyurethane foam sometimes being used The bonded sandwich structure of SIPs has been demonstrated to provide comparable strength to conventional walls consisting of a lumber stud frame filled with slabs
Dec , The method of claim , said bonding comprising applying a bonding material between side walls of the sandwich panel and side walls of the generally U shape Generally, composite sandwich panels offer a greater strength to weight ratio than traditional materials that are used by the building industry.
Jan , The panel construction forms a self supporting wall and thus may be employed exclusively in the construction of playing courts, or use in conjunction with is presented by a composite panel having two structural and functional components comprising a base sandwich panel member for imparting strength
A sandwich composite panel of other than flat configuration is bent from a flat panel by employing a brake forming operation The corners of the The laminated composite structure is thus strong in bending, as compared to its weight Such materials include foamed polyurethacrylimid, polyvinylchloride, and polyurethane.
Nov , An opening may be formed in each side wall to allow access to the interior of the railway car A top retainer and guide The composite roof of claim wherein the core comprises polymeric foam selected from the group consisting of urethane, polyurethane, styrene and polystyrene The composite roof of
The poured in place sandwich panel of claim further comprising a primer layer between the metal skin and said polyisocyanurate or polyurethane foam core to improve adhesion therebetween Approximately million square feet of usage is in wall panels, with only an estimated million square feet in roofing.
Sandwich panel structures usually are made of two relatively thin, dense, strong sheets of facing material between which is sandwiched a relatively thick, low sandwich panel facing sheets, jointer member and jointqfinishing strips, and the core material can be paper honeycomb, polyurethane foam, glass fiber matt, etc.
Oct , BACKGROUND OF THE INVENTION Field of the Invention [ ] The present invention relates to a polyol formulation comprising certain polyester polyols useful in the preparation of polyurethane rigid foams Such foams are particularly useful in producing composite elements, such as sandwich panels.
Jan , a vacuum infused sandwich panel comprising an upper skin and a lower skin and a core disposed substantially between the upper and lower skins or An insulated composite panel assembly according to claim , further comprising a polyurethane coating material disposed on an outer side of at least
As will become morereadily apparent while the description proceeds, the foam and sandwich panel consists of outer semi rigid sheets and S and polyurethane foam injected from the gun into the cavity defined by the hinged intermediate member and the inner surfaces of the semi rigid sheets and During the
Elastic coupling effects in tapered sandwich panels with laminated anisotropic composite facings SS Vel, V Caccese, H Zhao Journal of composite materials , , , Experimental methods to determine in plane material properties of polyurethane coated nylon fabric R Glaser, V Caccese.
Jul , The pallet according to claim , wherein the foam core comprises at least one of polyurethane, vinyl, acrylic, and phenolic foam The inventor has created an air cargo pallet having a central composite panel comprising a sandwich structure having a non metal upper fabric skin layer, a foam core and a
Feb , The stitch reinforced sandwich panel of claim , wherein each skin comprises a plurality of layers of non matrix impregnated fiber material The skins of the laminated structure in the Hawkins, et al patent utilize a polyurethane foam core along with glass fiber skins impregnated with a polyester resin.
Oct , The composite of claim , wherein the shape memory polymer is a polyurethane shape memory polymer The composition of entitled Sandwich Panel with a ductile Hybrid Core Comprising Tubular Reinforcements and co pending to U.S Provisional Application Ser No ,, filed
A light weight structural composite panel adapted for use in a vertical orientation in an underground worker protection system is disclosed vinylester, polyester, polyamide, polyamide, polyurethane and polysulphone resin material wherein said fiber matting and said fiber roving fiber reinforcing material are disposed in
Aug , The composite wall of claim , wherein the panel is of extruded polystyrene foam Punching connectors through the foam at approximately inch ( centimeter (cm)) intervals before pouring concrete into the subcavities forms a securely connected sandwich of the foam board between the concrete
Dec , Sandwich panels are commercially available consisting usually of two metal sheets (of galvanized and painted steel, stainless steel, aluminium alloy, etc.) between which an insulating material is placed The insulation normally consists of a single homogeneous layer of injected and expanded polyurethane
INVENTORI JAMES E CAREY BYZ j ms ATTORNEY J E CAREY SANDWICH PIPE Oct , I Sheets Shed Feb () a load bearing, high strength material filling said annular space to form a composite pipe wall construction with said first and second shells, said second tubular shell being formed With at least
Jul , an inner wall, located at a first predetermined distance from said outer wall, said inner wall comprising a structural laminate, said laminate comprising an outer metal layer A large scale composite steel polyurethane foam sandwich plate has been tested for its ability to prevent leak and rupture of a hull.
Second, if one desires to make a polyurethane foam composition containing a large percentage of filler, the quantity of liquid polyurethane foam precursor relative to the volume of filler The lled foam containing about by volume of st is relatively flexible, but of suicient strength that it can be used as a wall panel.