摘要:
Some aspects of the present disclosure generally relates to materials such as nonwoven materials, e.g., comprising fibers. Some examples of fibers include polyester, rayon, polyethylene terephthalate, polyvinyl acetate, etc. In some embodiments, the material may be functionalized in some manner. For example, a hydrophilic polymer such as polyethylene oxide may be bonded to at least some of the fibers and/or to itself. In some cases, the hydrophilic polymer may be substantially uniformly bonded to the fibers. In some cases, the functionalized material may be relatively permeable, which may allow fluids to flow therethrough. For example, the material may have a relatively high permeability to air, e.g., of at least 5 ft3/min/ft2. Other aspects are generally directed to methods of making or using such materials, kits including such materials, etc.
摘要:
L'invention concerne un procédé de fabrication d'un matelas de fibres minérales (F), dans lequel on forme des fibres (F) et on applique sur lesdites fibres (F) une composition d'encollage issue du mélange d'une composition de liant avec de l'eau de dilution, on collecte les fibres imprégnées de la composition d'encollage sur un dispositif de réception (52) ajouré muni d'une surface réceptrice de fibres et, sous ladite surface, au moins une gaine d'aspiration (54), et on traite thermiquement le matelas. Le procédé selon l'invention comprend une étape de détermination d'une quantité optimale d'eau de dilution en fonction de l'humidité de l'air sur le poste de fibrage (12), de l'humidité de l'air aspiré et du débit d'air aspiré dans la au moins une gaine d'aspiration (54), et de la quantité d'eau souhaitée dans le matelas en sortie de la chambre de réception (50), et une étape d'ajustement de la quantité d'eau de dilution en fonction de ladite quantité optimale ainsi déterminée.
摘要:
A process for producing a sheet-form sealing material which comprises: impregnating a nonwoven fabric with a liquid binder mixture comprising a rubber material or resin and a solvent or dispersion medium, while expelling the gas present in the nonwoven fabric; and heating and compressing the impregnated nonwoven fabric to vulcanize the rubber material or cure the resin. The impregnation is conducted, for example, by a method in which the nonwoven fabric which has been compressed is allowed to spontaneously recover its original shape in the liquid mixture. Alternatively, the impregnation may be conducted by the high-pressure spraying of the liquid mixture or by infiltration at a reduced pressure. Thus, a sheet-form sealing material reduced in strength anisotropy and excellent in gas-barrier properties, etc. is obtained.
摘要:
The invention relates to a device for producing a fibrous compact layer which consists of a fibrous mat that can be impregnated with a hardening agent. The device is comprised of an assembly for feeding the hardening agent and of a transport assembly which guides the fibrous mat through said assembly for feeding the hardening agent. A homogenizing and compacting assembly which comprises at least one rotational pressing roller and one counterpressure element is arranged downstream, in the direction of transport, from the assembly which feeds the hardening agent. Together, said roller and counterpressure element form a passage slit for the impregnated fibrous mat.
摘要:
Thermosetting aqueous compositions comprising a polymerizate component bearing carboxyl groups and optionally a hydroxyalkylated amine, and the use thereof as binding agents for mouldings.
摘要:
The present disclosure relates to a method for consolidating a fibrous material comprising or consisting of, plant-based fibers, such as cellulose fibers and/or poly-lactic acid fibers, the method comprising the steps of; - applying to the fibrous material an aqueous solution comprising a cellulose derivative, and/or a salt thereof, and an acid, the aqueous solution having a pH within the range of from 3 to 7, optionally within the range of from 3 to 6, optionally within the range of from 3 to 4.5; and - drying the bonded fibrous material, optionally at 100⁰ C or higher. The present disclosure relates to a fibrous material formed by the method, an aqueous binder solution comprising a cellulose derivative, and/or a salt thereof, and an acid, and a nonwoven material comprising airlaid plant-based fibers being consolidated by a bio- based binder in the presence of a carboxylic acid, the bio-based binder being a cellulose derivative, and/or a salt thereof.
摘要:
Etuve de réticulation d'un matelas (12) continu de fibres minérales ou végétales, comprenant une pluralité de caissons de chauffage (20) traversés successivement par ledit matelas de fibres (12), ladite étuve étant caractérisée en ce qu'au moins l'un desdits caissons comprend en outre, entre l'enveloppe d'isolation extérieure (49) de l'étuve et le compartiment central (40) dudit caisson, un dispositif intégré de chauffage et de recirculation de gaz chaud comprenant : -au moins une turbine radiale (50) montée horizontalement sur la paroi supérieure (45) ou la paroi inférieure (46) du compartiment central (40), dont l'axe de rotation est disposé verticalement, ladite turbine aspirant le gaz chaud selon ledit axe au travers d'un orifice de sortie (48) du gaz du compartiment central (40) après traversée du matelas (12), et le rejetant radialement vers des moyens de recirculation (51, 52), -des moyens de recirculation (51, 52) du gaz chaud en sortie de la turbine radiale (50) jusqu'à un orifice d'entrée (47) du gaz dans le compartiment (40), lesdits moyens de recirculation étant disposés au moins pour partie sur au moins une paroi latérale (43, 44) du compartiment, -au moins un moyen de chauffage (53) du gaz circulant dans ledit caisson.
摘要:
The present invention relates to an airlaid sheet material comprising a dry laid fibrous web and a latex coating on both surfaces thereof in selected amounts. The airlaid sheet material can be an absorbent structure for absorption of fluids.
摘要:
The invention relates to a method for controlling the corrosivity level of an aqueous solution recovered during a method for producing a mattress of mineral fibres, that comprises in particular fibre forming and binding said fibres with a binder including a polyacid typically of the acrylic type, said aqueous solution being recycled at least partially towards an area for preparing said resin and/or a scrubbing area of the production plant, wherein said method is characterised in that the pH of the solution in the recycling circuit is maintained between minimum and maximum values by feeding into said circuit a pH modifying agent such as a base, the amount fed of the flow of the pH modifying agent being directly adjusted based on the amount or flow of the acidic binder fed during the fibre forming process. The invention also relates to a device for implementing said method.