摘要:
A spinner assembly for making man-made vitreous fibres comprises centrifugal fiberising rotors (5, 6, 7, 8) driven by motors (42) and air supply outlets (9) supplied with air through air supply passages (15). The air is supplied to these passages by an axial compressor comprising an air inlet zone (22), a compressor portion(25) and an annular diffuser (33) which leads into the passages (15). The compressor portion (25) includes a prime mover (28) which drives compressor rotor blades (27).
摘要:
Continous glass filaments, and fibres obtained by comminuting the filaments and microfibres obtained by flame attenuation of the filaments, are formed of a substantially colourless aluminosilicate glass containing 25 to 52% SiO2, 20 to 35% AL2O3 and 0 to 1.5% FeO and having good biosolubility.
摘要:
The invention relates to a vibration damping system, which comprises an anti-vibration plate in the form of a plate having a first and a second major surface, wherein the first major surface may preferably be covered with a layer of surfactant-free geotextile. The anti-vibration plate comprises one or more layers, preferably a top layer and one or more bottom layers. Furthermore, it is essential that the anti-vibration plate is preferably obtainable by a method comprising the step of subjecting an area of the opposite surfaces of the plate to a compression treatment in one or more steps, which compression treatment is sufficient to reduce the static and/or the dynamic stiffness of the plate compared to the static and/or dynamic stiffness prior to the compression. The invention also relates to the method of applying a vibration damping system and the use of a vibration damping system.
摘要:
The present invention relates to a process for the manufacture of a mineral wool plant growth substrate having a coherent hydrophilic matrix of mineral wool fibres connected by cured binder, comprising the steps of: i. providing mineral wool fibres; ii. applying to the mineral wool fibres as a binder a phenol-formaldehyde resin and a furan resin; iii. forming a matrix of the mineral wool fibres; and iv. curing the binder and to the obtainable mineral wool plant growth substrate.
摘要:
The present invention relates to a process for the preparation of a mineral fibre board, and such a board having a predominant fibre orientation. The process comprises provision of a primary web, compression of the primary web, doubling of the primary web under formation of a secondary web, curing of an added binder and optional compression of the secondary web.
摘要:
Insulating element comprising a mineral fibre layer having a coating in the form of a fibrous web of polypropylene fibres prepared by meltblowing directly on the mineral fibre layer, said fibres containing a fire retardant in the form of a blend of antimony trioxide and a chlorinated paraffin, wherein the fire retardant constitutes 15-30 the wt.% of the polymer fibres, and wherein the weight ratio of antimony trioxide to chlorinated paraffin is between 1:3 and 1.5:1. Process for the preparation of such an insulating element by meltblowing a polypropylene melt containing such a fire retardant directly on a mineral fibre layer.
摘要:
The invention relates to a panel comprising mineral fibres and a thermosetting resin and comprising a hydrophobic layer and a hydrophilic layer, wherein the hydrophilic layer is in contact with the hydrophobic layer, said hydrophilic layer has a density which is equal to or higher than the density of said hydrophobic layer, preferably the average density of the hydrophilic layer is higher than the density of the hydrophobic layer. The invention also relates to the use of the panel and methods of preparing such panels.
摘要:
Man-made vitreous fibres are made from a melt (21) which is formed in a shaft furnace (1) into which combustion air is injected through tuyeres (5) after being preheated to above 700 °C, and powdered material is injected into the furnace with the combustion air.
摘要:
The present invention relates to a pipe section comprising an insulation layer extending around a cavity, said layer comprising a through-going slit in the axial direction, wherein the layer is composed of two or more separately produced, juxtaposed parts having adjoining side surfaces and where the parts are joined together through a resilient hinge by means of adhesive material disposed in the zone between the adjoining side surfaces of the juxtaposed parts.