Abstract:
Disclosed is an absorbent structure including a liquid acquisition layer and a fibrous liquid storage layer in liquid communication with the acquisition layer. The storage layer includes SAP particles. The acquisition layer includes synthetic fibers and the fibers are latex bonded. A fluid acquisition and/or distribution layer (ADL) containing at least two layers, a top layer of latex bonded synthetic fibers and a bottom layer of latex and/or thermal bonded cellulose fibers and method for preparation thereof are disclosed. The synthetic fiber layer is highly porous and provides rapid fluid acquisition under load. The cellulose layer provides z-direction capillary force to pull fluid into the absorbent product, to provide temporary fluid immobilization, and to act as a conduit for fluid to be pulled into unsaturated portion of the permanent fluid storage layer. The ADL of the invention provides increased protection against leakage relative to single-layer ADLS.
Abstract:
A fire-resistant core for use in a combustible fire-rated building panel (1), such as a fire door, has a wood product-containing solid structural member (20) with a density of between about 30 and 60 lbs. per cubic foot and a thickness between about {fraction (1/16)} inch and two inches. At least one layer of fire-resistant composite (21) is attached to at least a lateral surface (22) of the structural member (20). The composite has an inorganic, non-woven fibrous web (25) with a thickness of from about 5 to 50 mils. A web binder is substantially uniformly dispersed throughout the web (25). A substantially continuous coating (27) is on at least a lateral surface (28) of the web (25). The coating is of particulate vermiculite (29) and has a thickness of from about 0.5 to 10 mils and the add-ons of the vermiculite to the web are from about 10% to 50%.
Abstract:
The first group of the present invention is a wood reinforcing carbon fiber prepreg, which is produced through impregnation with a mixture resin at a viscosity of 3 to 150 poises at 20° C., wherein the mixture resin contains one or more resins selected from resorcinol based resins and resol type phenol based resins, formaldehydes as curing agents and inorganic acids or organic acids as curing catalysts. The first group of the present invention is a wood reinforcing carbon fiber prepreg having a longer usable time and being capable of imparting the rigidity and elastic modulus of carbon a fiber to the wood to be reinforced at a high ratio. The second group of the present invention is a wood reinforcing carbon fiber prepreg attached wood based sheet, wherein a wood based sheet of a thickness of 0.01 mm to 0.06 mm is arranged on at least one face of a carbon fiber prepreg sheet produced through impregnation with a mixture resin containing a thermosetting resin and a curing agent or a curing catalyst. The second group of the present invention is a carbon fiber prepreg sheet, or a carbon fiber prepreg attached wood based sheet produced through the attachment of the strand, or a carbon fiber composite wood based sheet produced by curing them, characterized in that it has excellent adhesivity and handleability with no occurrence of environmental pollution when applied to wood and glued laminated lumbers, to impart the rigidity and elastic modulus of carbon fiber to the wood to be reinforced at a high ratio.
Abstract:
A rough-surfaced substrate, such as a fiberboard, is provided with a smoother surface by applying a coating comprising calcium sulfate hemihydrate which has been prevented from hydrating to gypsum by set preventer, and which sets when brought into contact with a set initiator, e.g. aluminum sulfate, preferably present on the surface of the substrate.
Abstract:
The specification discloses a method for laminating a synthetic film or sheet to a fibrous web. According to the method, a heat-softenable material is combined as a sheet, film, spray or powder with a continuous fibrous web in interfacial contact with fibers of the fibrous web to form a composite. The composite is then continuously conducted through an extended nip dryer where heat and pressure are applied to the composite to effect a substantial reduction in moisture content of the composite while plasticizing the heat-softenable material so that at least a mechanical bond is formed between the material and the fibers of the web characterized by an intermingling of the fibers and the heat-softenable material.