47 results about "Polyurethane laminate" patented technology

A photochromic polyurethane laminate that is constructed to solve certain manufacturing difficulties involved in the production of plastic photochromic lenses is disclosed. The photochromic laminate includes at least two layers of a resinous material and a photochromic polyurethane layer that is interspersed between the two resinous layers and which contains photochromic compounds. The polyurethane layer is formed by curing a mixture of a solid thermoplastic polyurethane, at least one isocyanate prepolymer, at least one photochromic compound, and a stabilizing system.

A photochromic polyurethane laminate wherein the photochromic polyurethane layer of the laminate has been crosslinked with a isocyanate-active prepolymer using a crosslinking agent. The crosslinking agent is formulated to have at least three functional groups that are reactive with functional groups of the polyurethane or of the isocyanate-active prepolymer. A method of making the photochromic polyurethane laminate includes steps of causing the crosslinking.

Photochromic polyurethane laminates and methods for the formation of same wherein the photochromic polyurethane layer of the laminate has been crosslinked with a isocyanate-active prepolymer using a crosslinking agent. The crosslinking agent is formulated to have at least three functional groups that are reactive with functional groups of the polyurethane or of the isocyanate-active prepolymer.

A fiber reinforced composite laminate with fibers generally oriented along two major axes and having a polyurethane resin matrix suitable for reinforcing wood based substrates such as trailer/container flooring, glulams, plywood, particle boards, laminated veneer lumber, and oriented strand board, is provided. The laminate is produced by pulling the fibers through a resin injection box, where a polyurethane resin is injected into the box to wet the fibers. The polyurethane resin wetted fiber layer is then covered with a release media on the top and bottom sides of the layer. The sandwich of fiber, resin and release media is fed to a double belt press capable of applying pressure and heat to consolidate and cure the laminate. The laminate thus made can be thinner than 0.080 inch and provides excellent flatness compared to pultruded thin laminates.

The present invention is embodied in a transparent, polyurethane laminate or multi-layer coating comprising a first transparent polyurethane layer, a middle conductive material layer disposed on the first transparent polyurethane layer, and a second transparent polyurethane layer disposed on the conductive layer. In one embodiment, the subject invention addresses the problem of static charge buildup on aircraft transparencies by allowing charge to drain through the second transparent polyurethane layer to the conductive material layer and then to the edge of the conductive material layer, where it is mated to the airframe. The present invention is also embodied in a method for forming a transparent polyurethane laminate on a transparent substrate and a method for forming a free-standing laminate.

The invention relates to a polyurethane laminated moulding product, the polyurethane laminated moulding product comprises a core layer and an enhanced fibrous layer arranged on at least one side of the core layer, By applying a polyurethane resin composition on one layer or multilayer enhanced fibrofelts or enhanced fabrics, and the polyurethane resin is solidified, and the enhanced fibrous layer is formed. The polyurethane laminated moulding product has good mold release property and productivity.

Photochromic polyurethane laminates and methods for the formation of same wherein a photochromic polyurethane layer of the laminate is interposed between two primer coated transparent resin sheets.

The invention discloses a water dyeing method of semi-polyurethane leather. The water dyeing method of the semi-polyurethane leather comprises the steps that (1) a polyurethane surface layer sizing agents are coated on release paper and then put into a drying oven to be dried; (2) five to ten weight percent of foaming layer sizing agents are coated; (3) an adhesive layer is coated, the thickness of the adhesive layer is 0.05-0.1 mm, and then the adhesive layer is put into the drying oven to be dried; (4) base leather is obtained by stripping and coiling the release paper, surface treatment is carried out, and then a semi-polyurethane leather finished product is obtained. The water dyeing method of the semi-polyurethane leather selects water-borne adhesives, the use quantity of organic solvents in the making process of the semi-polyurethane leather is reduced, and environmental pollution is relieved. The semi-polyurethane leather made through the method is pure white in appearance, good in product performance, good in hand feeling and suitable for being used for making gloves, clothes, cases and the like.

The invention discloses a polyurethane composite film comprising a polyurethane layer and a polytetrafluoroethylene layer. The polyurethane layer comprises two opposite sides, and the polytetrafluoroethylene layer is positioned on one side of the polyurethane layer. A layer of textile fabric can be composed on one or both of the outer sides of the composite film. The composite film is air-permeating and moisture-permeating, and has high wear resistance. According to the invention, the quality of composite clothing fabric formed by the composite film and textile product is effectively improved, and performance requirements on functional clothing fabric are satisfied.

The invention relates to a steel tile roof system with a cold-formed thin-walled steel structure. The system comprises a gypsum board, secondary purlines and a cold-formed thin-walled steel truss, wherein the cold-formed thin-walled steel truss is erected on the gypsum board by the secondary purlines. The system also comprises a polyurethane laminated composite plate, roof purlines and steel tiles, wherein the polyurethane laminated composite plate is fixed on the cold-formed thin-walled steel truss by screws; the quantity of the roof purlines is more than one; the roof purlines are horizontally disposed on the polyurethane laminated composite plate in parallel; multiple layers of the steel tiles are disposed in succession from bottom to top and form a stair shape; and the steel tiles are connected to the purlines by screws. In comparison with the prior art, the system provided by the invention has the advantages of high intensity, high rigidity, good heat insulation performance and high resistance to winds and earthquakes, etc.

A polyurethane dispersion is a polyurethane dispersion in which polyurethane resin produced by reaction of an isocyanate group-terminated prepolymer with a chain extender is dispersed in water. The isocyanate group-terminated prepolymer is produced by at least allowing a polyisocyanate component containing xylylene diisocyanate and/or hydrogenated xylylene diisocyanate to react with a polyol component containing diol having 2 to 6 carbon atoms, a low-molecular-weight polyol having a functionality of three or more, and an active hydrogen group-containing compound containing a hydrophilic group. The chain extender contains an alkoxysilyl compound having a primary amino group, or a primary amino group and a secondary amino group, and the molar ratio of the hydroxyl group in the low-molecular-weight polyol having a functionality of three or more is less than 25% relative to a total mol 100% of the hydroxyl group in the polyol component.

The invention relates to the technical field of seismic insulation, and particularly relates to a fiber reinforced epoxy resin/polyurethane laminated seismic insulation support. The support comprises a support body which is formed by alternately overlaying and bonding fiber reinforced epoxy resin plates and polyurethane elastic body plates. The support is low in cost and simple in construction technology, with the pressure stress limiting value being smaller than that of a laminate steel plate rubber support, and is applicable to low-rise buildings, multi-rise buildings, bridges, industrial equipment and valuable cultural objects in small towns, villages and mountainous areas. The invention also discloses a manufacture method of the fiber reinforced epoxy resin/polyurethane laminated seismic insulation support.

The invention discloses a complex self-adhesive elastic bandage and a manufacturing method thereof. The complex self-adhesive elastic bandage comprises an upper non-woven fabric layer and a lower non-woven fabric layer, wherein a polyurethane filament layer is sandwiched between the upper non-woven fabric layer and the lower non-woven fabric layer, and a bandage substrate is formed by combining the upper non-woven fabric layer, the polyurethane filament layer and the lower non-woven fabric layer; complex adhesive layers are coated on the front side of the upper non-woven fabric layer and on the back side of the lower non-woven fabric layer; the complex adhesive layers include polyisoprene and polyacrylate; the non-woven fabric layers make use of a polypropylene non-woven fabric; fibers of the polypropylene non-woven fabric are in directional alignment in a longitudinal direction, and a longitudinal arrangement proportion of the fibers of the polypropylene non-woven fabric is 70-90%; polyurethane filaments of the polyurethane filament layer are subjected to 60-120D specification; and warp-wise density of the polyurethane filaments is 7-11 polyurethane filaments/inch. The bandage, which is telescopic in a transverse direction, can be stretched by 20-40%, so that binding and fixing on special parts are facilitated; and the bandage has an easy-to-tear property in both transverse and longitudinal direction, with clear and tidy torn surfaces.

The present invention relates to laminates comprising metal and compact or cellular polyurethane resins, to processes for the production of these laminates, and to the production of molded articles comprising these laminates.

A reusable, cloth diaper of singular construction is provided. The diaper is generally shaped like a classic hourglass configuration, and includes a pair of absorbent flaps in a cross-flap configuration on an inner portion thereof, wherein one flap is attached to a rear portion of the diaper and the other flap is attached to a front portion of the diaper, each adjacent to the child's waist. The outer layer of the diaper is preferably made from a blend of bamboo and cotton, and includes a polyurethane laminate layer on the inner surface of the outer layer. The diaper construction further includes means for adjusting waist and crotch sizes, as well as storage snap means for securing the diaper into a rolled up storage and transport configuration.

The invention discloses a polyurethane composite plate, which comprises a polyurethane plate, phenolic resin and a non-woven fabric, wherein the phenolic resin is compounded between the polyurethane plate and the non-woven fabric. The polyurethane composite plate has good thermal insulation and sound insulation effects without dust pollution; a great amount of adhesive is not required to be added in the preparation process, so thick odor in the pressing process is avoided; and the product is light.

The invention relates to the technical field of seismic isolation, in particular to a steel plate/polyurethane laminated seismic-isolation support which comprises a support body. The support body is formed by alternately laminating and bonding steel plates and polyurethane elastomer plates. Compared with a steel plate/rubber laminated seismic-isolation support, the steel plate/polyurethane laminated seismic-isolation support is lower in production process, higher in quality and excellent in performance and can be used as a seismic-isolation structure of buildings, bridges, industrial equipment and valuable cultural relics. The invention further relates to a manufacturing method of the steel plate/polyurethane laminated seismic-isolation support.

A pillowcase having a first top layer of a polyester mesh wicking fabric. The pillowcase further comprises a second contiguous top layer of a polyester nylon wicking microsuede and a third contiguous top layer of a polyurethane laminate material. The first layer of the pillowcase is adjacent to the top exterior of the pillowcase. The pillowcase further comprises a bottom layer of the polyester mesh wicking fabric. The pillowcase has a bottom layer that is adjacent to the bottom exterior of the pillowcase. The pillowcase further can have a second contiguous bottom layer of the polyester nylon wicking microsuede and a third contiguous bottom layer of the polyurethane laminate material.

The invention discloses a production method of a rigid-foam polyurethane composite plate. According to the production method, a layer of polymer sheet is arranged on each of two sides of rigid-foam polyurethane, non-woven fabrics are arranged in the polymer sheets. The production method comprises the following steps of: producing the polymer sheets by using adhesive, inorganic powder and the non-woven fabrics; foaming polyisocyanate and combined polyether to produce a polyurethane plate by using a polyurethane production line and compositing the polymer sheets to the two sides of the polyurethane plate at the same time, thus obtaining the polyurethane composite plate. When used, the rigid-foam polyurethane composite plates are cut according to required size firstly, and then the cut rigid-foam polyurethane composite plates are spliced and adhered to walls, thus obtaining seamless integrated heat-insulating walls.

The present invention relates to a thin film polyurethane foam laminate and a method for manufacturing the same, the method comprising the steps of: (a) generating a foam composition of a gas-liquid mixture by feeding, as raw materials for a foam composition without using water, which is a chemical foaming agent, polyol, isocyanate, a moisture absorbent, micro hollow spheres, and an additive into a mixer, followed by mechanical foaming through a foaming gas; (b) supplying the mechanically foamed gas-liquid mixture from the mixer to a discharger connected to a connection tube; (c) coating the gas-liquid mixture, which is discharged from the discharger, on a first base film to a predetermined thickness; (d) attaching a second base film on a surface of the gas-liquid mixture coated on the first base film, and hardening the resultant structure with the attached second base film in a thermal hardener, thereby generating a polyurethane foam layer; (e) releasing the second base film after the completing of the thermal hardening step, coating a coating agent on a surface of the hardened polyurethane foam layer, and then laminating a coating film using a UV hardener; and (f) collecting the polyurethane foam laminate with the laminated coating film, using a collection roll. A low-density polyurethane foam laminate having a very thin thickness, which is required by a sealing member and a buffer applied to an electronic device, can be molded by: adding, in the foaming composition, zeolite as a moisture absorbent for absorbing residual moisture and micro hollow spheres causing less aggregation between cells; performing mechanical foaming using nitrogen as a foaming gas; and then performing thermal hardening. Therefore, the low density molding is suitable for a sealing material and cushioning material of an electronic device, where a polyurethane foam laminate with super thin thickness is required.