Stock material or miscellaneous articles – Structurally defined web or sheet – Including grain – strips – or filamentary elements in...
Patent
1996-09-06
1999-11-09
Raimund, Christopher
Stock material or miscellaneous articles
Structurally defined web or sheet
Including grain, strips, or filamentary elements in...
428113, 428119, 428120, 428181, 428182, 264103, 264146, 264152, 264160, 264257, 425296, 425297, 425301, 425303, 425308, B32B 512
Patent
active
059810246
DESCRIPTION:
BRIEF SUMMARY
The present invention generally relates to the technical field of producing mineral fiber plates. Mineral fibers generally comprise fibers such as rockwool fibers, glass fibers, etc. More precisely, the present invention relates to a novel technique of producing a mineral fiber-insulating web from which e.g. mineral fiber-insulating plates or products are cut. The mineral fiber plates or products produced from the non-woven mineral fiber web produced in accordance with the present invention exhibit advantageous characteristics as to mechanical performance, such as modulus of elasticity and strength, low weight, reduced content of bonding agents, and good thermal-insulating property.
Non-woven mineral fiber webs are normally hitherto produced as homogeneous webs, i.e. webs in which the mineral fibers of which the mineral fiber web is composed, are generally orientated in a single predominant orientation which is determined by the orientation of the production line on which the mineral fiber web is produced and transmitted during the process of producing the mineral fiber web. The product made from a homogeneous mineral fiber web exhibits characteristics which are determined by the integrity of the mineral fiber web and which are to a high degree determined by the binding of the mineral fibers within the mineral fiber plate produced from the mineral fiber web, and further to a high degree determined by the density of the mineral fibers of the mineral fiber plate.
The advantageous characteristics of mineral fiber plates of a different structure has to some extent already been realized as techniques for the production of mineral fiber plates in which the mineral fibers are orientated in an overall orientation different from the orientation determined by the production line, has been devised, vide Published International Patent Application, International Application No. PCT/DK91/00383, International Publication No. WO 92/10602 and U.S. Pat. No. 4,950,355. Reference is made to the above patent application and patent, and the above U.S. patent is hereby incorporated in the present specification by reference.
An object of the present invention is to provide a novel method of producing a mineral fiber web from which mineral fiber plates may be cut which method renders it possible in an online production plant to produce mineral fiber plates which are of a composite structure providing distinct advantages as compared to the prior art mineral fiber-containing plates.
A further object of the present invention is to provide a novel method of producing a tubular insulating element which method renders it possible to produce tubular insulating elements exhibiting specific characteristics in terms of mechanical characteristics, including flexibility and mechanical strength, and thermal insulating properties.
A particular advantage of the present invention relates to the novel mineral fiber plate according to the present invention and produced in accordance with the method according to the present invention which as compared to prior art mineral fiber plates contains less mineral fibers and is consequently less costly than the prior art mineral fiber plates, still exhibiting advantages as compared to the prior art mineral fiber plates relating to mechanical strength and thermal-insulating properties.
A particular feature of the present invention relates to the fact that the novel mineral fiber plate according to the present invention and produced in accordance with the method according to the present invention is produceable from less mineral fibers or less material as compared to the prior art mineral fiber plate still providing the same properties as the prior art mineral fiber plate regarding mechanical strength and thermal-insulating properties, thus, providing a more lightweight and less voluminous mineral fiber plate product as compared to the prior art mineral fiber plate product reducing transport, storage and handling costs.
A further advantage of the present invention relates to the fact that the novel mineral fi
REFERENCES:
patent: 4128678 (1978-12-01), Metcalfe et al.
patent: 4552793 (1985-11-01), Cameron et al.
Brandt Kim
Cridland Ian
Noergaard Luis Joergen
Raimund Christopher
Rockwool International A/S
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