Abstract:
Pitch and sticky accumulation on papermaking fabric is reduced by applying a solution or dispersion of a cationic composition to the fabric. The cationic composition includes a cationic polymer, a nonionic surfactant and an anionic surfactant and retains a net cationic charge. Preferably, this is continuously applied during the papermaking process.
Abstract:
A variety of embodiments are disclosed, in both apparatus and method form, that relate to the use of fabric material in the manufacture of an air bag deployment system. In addition, fabric weakening is disclosed according to a technique that does not result in physical alteration of the fabric. This invention therefore includes an air bag cover for an air bag safety system for a vehicle comprising a fabric outer layer having a frontside and a backside and a substrate containing an opening wherein the opening has a periphery. The substrate is preferably formed by low pressure molding, wherein the fabric outer layer overlies the opening in the substrate, and wherein the fabric outer layer is weakened at a location that is adjacent or overlies the substrate opening periphery.
Abstract:
A fabric having worsted yarn fabric-like hand and appearance and a satisfactory stretchability, is obtained by melt-spinning two types of polyesters, different in intrinsic viscosity from each other, to produce a conjugate multifilament yarn; winding-up the yarn at a speed of 1,000 to 4,500 m/min; unwinding the wound yarn; unevenly drawing the yarn at a draw ratio lower than a natural draw ratio thereof to produce a thick-and-thin yarn; forming a fabric from the yarn; and applying a mass reduction treatment with an alkali to the fabric with a mass reduction of 3 to 30 mass %, to cause a plurality of cracks extending in a direction crossing the filament axis to be formed on the peripheries of individual filaments of the yarn.
Abstract:
A method is provided for making a hydrophilic carbon fiber construction comprising the steps of: a) immersing a carbon fiber construction in an aqueous dispersion of one or more metal oxides, comprising: i) 1-15% by weight metal oxide; ii) 0.01%-5% by weight dispersant; and b) subsequently heating the carbon fiber construction sufficiently to remove substantially all of the dispersant. Typically the entire method can be completed in less than 20 minutes. In addition, a hydrophilic carbon fiber construction made according to the method of the present invention is provided, typically having a loading of metal oxide equivalent to 20-50 mg metal per gram of carbon.
Abstract:
Stable cellulosic fiber material for use in forming zeolite/cellulose composites is prepared by suspending loose cellulose fibers in an aqueous solution of sodium hydroxide, potassium hydroxide or sodium silicate, stirring the resulting suspension until it reaches a macroscopically homogenous appearance, heating the resulting mixture at a temperature of 323-423 K until only dry solids remain, contacting the resulting mixture with excess distilled water to remove physically adsorbed or trapped sodium hydroxide, potassium hydroxide or sodium silicate from the fibers, and heating the resulting fiber material at 323-423 K to dry the fiber material. Stable zeolite/cellulose composite material characterized in that leaching of the zeolite phase does not occur upon contact of the composite with water at approximately 373 K comprises a zeolite and a stable cellulosic fiber prepared as described above, the composite material being formed by contacting a zeolite with the stable fiber material.
Abstract:
In a preferred embodiment, the present process involves subjecting a fabric comprised of conjugate yarns to an acidic treatment, which degrades a portion of one component of the conjugate yarns and to dyeing. The acid treatment, given certain reaction kinetics, removes a portion of the polyamide element of the conjugate filament. The at least partial removal of the polyamide component results in a fabric has enhanced dyed appearance, especially when dyed a dark shade. In an alternate embodiment, the fabric may also be treated with a basic solution to improve its moisture transport properties.
Abstract:
A method for shrink-proofing a cellulosic fiber textile that involves liquid ammonia treatment, hot water or alkali treatment under tension or under no tension, and with optional resin treatment.
Abstract:
The present invention provides a method of treating wool, wool fibers or animal hair an alkali-containing alcohol solution, followed by a proteolytic enzyme in aqueous solution. The described method results in improved shrink-resistance, and may result in improvements in handle, appearance, wettability, reduction of felting tendency, increased whiteness, reduction of pilling, improved softness, improved tensile strength, and improved dyeing characteristics such as dye uptake and dye washfastness.
Abstract:
A cellulose multifilament yarn which is a lyocell multifilament yarn and has a breaking tenacity of 2.8-4.0 g/d and a breaking elongation of 13-20% both as dried and which gives a tenacity-elongation curve passing a tenacity range of 0.2-1.0 g/d at an elongation of 5% and a tenacity range of 0.4-2.5 g/d at an elongation of 10%.
Abstract:
A mixture of at least one acid and at least one metal compound enhance the stain resistance or acid dye fixation and resistance to cold water bleeding of fibrous polyamide and wool substrates, for example, carpets, treated with a water-soluble sulfonated aromatic-aldehyde condensation resin, for example, sulfonated resole and sulfonated novolak type resins; at the same time an improvement in light fastness or non-yellowing is obtained and the durability or wash fastness of the stain resistance is improved; the condensation resin is optionally employed in conjunction with a polymeric methacrylic acid. The acid of the mixture is one or more of phosphoric acid, polyphosphoric acid, citric acid and sulfuric acid; the metal compound is, in particular, a salt of magnesium or copper.