Abstract:
A pultrusion method for forming a laminated composite with a predetermined profile and the product obtained. An apparatus is used that comprises at least two spools (2) for supplying elongated reinforcements (1). A collator (3) receives the elongated reinforcements (1) and arranges the reinforcements in layered relationship to form a layered elongated bundle (4). A supply member wets the layered elongated bundle with plastisol to form a wetted elongated bundle (8). The wetted elongated bundle (8) is transported through a pultrusion die (9) wherein the wetted layered bundle is molded into the predetermined profile. A curing section (11) cures, or converts, the wetted layered bundle (8) into the layered composite. A particularly preferred embodiment is an extrusion comprising a reinforcing material wherein said reinforcing material comprises a fiber reinforced plastisol.
Abstract:
A connection between composites (10, 12) with non-compatible properties and a method of preparing of such connections are provided. The composites comprise first and second type fibres, respectively, as well as resin. The connection comprises a transition zone (52) between the composites (10, 12) having a layered structure. The transition zone may optionally comprise a transition member and the transition member may optionally be integrated with one or more of the composites. Examples of non-compatible properties where the present connection will be appreciated are great differences in stiffness, e.g. Young's modulus, or in coefficient of thermal expansion.
Abstract:
The invention relates to a method comprising mechanically treating a lignocellulosic or cellulosic material and passing the mechanically treated material through a first screen having an opening size of 3.175 mm (1/8 inch) or less, to provide a screened fibrous material, and combining the screened fibrous material with a biodegradable polymer.
Abstract:
A nonwoven trough and method of construction thereof are provided. The nonwoven trough includes at least one nonwoven wall formed from a mixture of bonded natural cellulosic fibers and thermoplastic fibers. The at least one nonwoven wall extends along a longitudinal axis and has a midsection and opposite end portions. The midsection has a base and a pair of walls extending upwardly from the base to provide the midsection with a generally U-shaped cross-section taken generally transversely to the longitudinal axis. At least one flange extends laterally from the at least one nonwoven wall, wherein the flange is configured for attachment to a vehicle member.
Abstract:
A manufacturing method for a joined body, includes: bringing a first member (12) and a second member (14) into contact with each other, at least one of the first member (12) and the second member (14) being made of thermoplastic resin, and the second member (14) having a recessed portion (14D) on a joining surface (14C) to be joined to the first member (12); and welding the first member (12) and the second member (14) together, including welding a contact portion (70) of the first member (12) and the second member (14) by melting the thermoplastic resin by frictional heat generated in the contact portion (70) by relative movement of the first member (12) and the second member (14), in a state in which the first member (12) and the second member (14) are in contact with each other.
Abstract:
The present invention relates to new and improved lignocellulosic materials containing (A) 30-98.99% wt. of one or more lignocellulose-containing materials; (B) 0.01-50% wt. microfibrillated cellulose; (C) 1-5% wt. binder selected from the group consisting of aminoplastic resin, phenolformaldehyde resin, organic isocyanate with at least two isocyanate groups, or mixtures thereof, optionally with a curing agent; (D) 0-25% wt. expanded plastic particles with a bulk density ranging from 10 to 150 kg/m 3 ; and (E) 0-68% wt. additives.
Abstract:
The present invention provides, among other things, compositions comprising nanofibrils, at least one maleic-anhydride (MA) copolymer and at least one matrix polymer, and methods of making such compositions. The provided methods and compositions allow for the production of composites with unexpectedly superior properties including improved impact resistance, tensile modulus of elasticity, tensile strength, and flexural modulus of elasticity as compared to previously known composites. In some embodiments, the present invention provides methods including the steps of providing cellulose nanofibrils, associating the cellulose nanofibrils with a maleic-anhydride (MA) copolymer to form a nanofibril-MA copolymer blend, preparing the nanofibril-MA copolymer blend for addition to a matrix polymer, and forming a composite by associating the nanofibril-MA copolymer blend with the matrix polymer, wherein the amount of cellulose nanofibrils in the composite is between 3% and 50% by weight of the composite.
Abstract:
The present invention is directed to a method of making a flexible hose (10), comprising the steps of extruding a first poly(vinyl chloride) compound to form a tube (1), the tube having an inner cylindrical cavity coextensive with the tube; a) applying a textile reinforcement (5) over the tube; b) extruding a second poly(vinyl chloride) compound over the textile reinforcement to form a cover layer (6), said tube, reinforcement and cover layer defining a hose composite; c) inserting a rigid mandrel into the inner cylindrical cavity; d) wrapping a fabric wrap around the outside of the cover of the hose composite; and e) processing the wrapped hose composite at a temperature in a range of 130° to 160°C and a pressure of 30 to 70 psig for a time ranging from 5 to 40 minutes.
Abstract:
The present invention relates to production method of a composite material wherein the composite material is tensioned and cured to produce a composite material with a single cord or cord fabric reinforced with another component, comprising the steps of adhering at least two layers of compound material, attaching the adhered compound materials inside a hollow frame, placing said frame into a pre-tensioning device, wrapping the cords around the frame with the desired pre-tension, removing the frame together with the compound material and the cords from the pre-tensioning device, placing at least one layer of compound material on the curing tray, placing the coated frame removed from the pre-tensioning device onto the compound material layers, placing at least one more layer of compound material on the coated frame, closing the lid over the curing tray, curing the material and cutting the composite material into strips.