Abstract:
Disclosed are methods and devices for forming a combined polyester and fiberglass mat, in which separate polyester and fiberglass layers can be formed or polyester filaments and fiberglass threads can be mixed together by a disperser to form a polyester and fiberglass web. The polyester filaments and the fiberglass threads can be dispersed by separate dispersers on a web forming belt to form separate layers of polyester filaments and fiberglass threads, or can be dispersed by a single disperser to at least, somewhat evenly disperse, the fiberglass threads and polyester filaments.
Abstract:
The present invention relates to an aqueous binder composition for mineral fibers comprising - at least one hydrocolloid, - at least one fatty acid ester of glycerol.
Abstract:
The invention relates to a formaldehyde-free binder composition for mineral fibres comprising at least one phenol and/or quinone containing compound, and at least one protein.
Abstract:
A process for the manufacture of a fibre web containing a thermosetting resin, and a reinforced thermosetting resin composite containing the fibre web containing the thermosetting resin. The process comprises forming a fibre web (100) of at least reinforcing fibres (101), bringing at least a thermosetting resin (102) together with the reinforcing fibres, and joining the fibre web (100') at least partly by means of said thermosetting resin. Further, the process comprises having the thermosetting resin in the form of substantially dry grains (103), bringing said grains of thermosetting resin together with the reinforcing fibres (101) at a confluence temperature(T1) at about room temperature, and then joining the fibre web by prior to and/or under a pressure (p) at least partly heating the grains of thermosetting resin present in the fibre web (100') to a joining temperature (T2) being higher than the temperature (T1) at the confluence, and then cooling the fibre web (100") to room temperature. The reinforced thermosetting resin composite can preferably be used for sanitary products such as washing basins, toilet chairs, for different abrasive surfaces, for electricity conducting products and for medical technical products such as implantable devices for lengthening of a leg and the similar. Many other applications are considered as well.
Abstract:
A non-woven mesh which can be used as a reinforcing frame, comprising superposed laps of longitudinal wires and cross-wires joined to each other by adhesive bonding and which define apertures enabling said mesh to be embedded inside the material which is to be reinforced, wherein wires (1a, 1b) (2) entering into the construction of said grid are composed of multifilament chemical wires whose mechanical characteristics are not impeded by the nature of the structure to be reinforced; in said mesh, the cross-wires(2) are imprisoned between two series of longitudinal wires (1a, 1b) which are superposed therebetween; the adhesive used to join the wires to each other surrounds said wires along the entire length thereof and links the pairs of longitudinal wires (1a, 1b) in areas (4) contained between two consecutive cross-wires (2), firmly maintaining said wires in relation to each other. The invention is characterized in that at least the cross-lap is composed of torsion-free multifilament wires, whereby the filaments thereof are disposed in a parallel, flat position forming a wide ribbon in relation to the thickness thereof.
Abstract:
A compressed and packaged roll of bonded, low density, man-made vitreous fibre (MMVF) batt has upper and lower faces (30, 31) which extend in the X and Y axes, end edges (32) extending substantially along the X axis and side edges (33, 34) extending substantially along the Y axis. The batt is formed of a cured entangled stack of layers (7) each of which is formed of a continuous air laid MMVF web (7) including a bonding agent. The side edges of the layers are inclined to the faces and define the side edges (33, 34) of the batt, the end edges (32) of the batt are defined by end edges (35) of the layers and these end edges are substantially parallel to the faces (30, 31), other end edges (36) of the layers extend between the side edges across the faces at substantially regularly spaced apart positions, and the axis of the roll extends substantially along the X axis. The number of end edges (36) in each face (30, 31) is 0.4n or less, per metre, where n is the average number of layers in the Z axis. The batt may be made by cross lapping a web which is at least 2.5m, often 4 to 8m, wide.
Abstract:
The invention concerns a method for making composite sheets consisting in: introducing continuously at least one yarn layer, this layer comprising at least two materials having different melting points, in a zone where it is heated at a temperature ranging between said melting points and less than the degradation temperature of the material having the lower melting point; passing over the layer at least a turning bar heated at a temperature ranging between said melting points and less than the degradation temperature of the material with the lower melting point; compressing the layer as it comes out of the bar or bars and cooling it so as to form a composite strip; collecting the strip in the form of one or several composite layers. The invention also concerns a device for implementing the method as well as the resulting products.
Abstract:
L'invention concerne une structure textile, destinée à être utilisée en tant que structure absorbante acoustique dans des panneaux de plafonds acoustiques et/ou des panneaux muraux acoustiques, constituée (a) d'un mat non-tissé de fibres de verre liées par liant thermodurci, le mat non-tissé ayant un poids surfacique compris entre 20 et 200 g/m2 et (b) d'une couche continue acoustique comprenant de 80 % à 95 % en poids de particules de préférence minérales et de 5 à 20 % en poids d'un liant polymère thermoplastique et/ou élastomère, la structure textile ayant une porosité ouverte supérieure à 3 %, de préférence comprise entre 4 % et 60 %, et une résistance statique au passage de l'air (déterminée selon la norme ISO 9053) comprise entre 1000 et 3000 N.s.m -3 , ladite couche continue acoustique imprégnant au moins partiellement ledit mat non-tissé et la distribution granulométrique des particules présentant un D 10 compris entre 0,1 et 0,5 µm. Elle concerne également un procédé pour fabriquer une telle structure textile et un panneau de plafond ou panneau mural revêtu sur une de ces faces d'une telle structure textile.