Stock material or miscellaneous articles – Hollow or container type article – Nonself-supporting tubular film or bag
Patent
1989-01-13
1990-10-02
Van Balen, William J.
Stock material or miscellaneous articles
Hollow or container type article
Nonself-supporting tubular film or bag
428 359, 428 69, 428 72, 428166, 428178, B32B 108, E04B 178, B63C 712
Patent
active
049606255
DESCRIPTION:
BRIEF SUMMARY
The present invention relates to an element for filling limited space, such as the interiors of floating bodies in the form of pontoons and the like, dead space in buildings particularly under roofs, and between ground floor and ground, and in general spaces which are to be filled for buoyancy or insulation with a large number of relative small gas volumes separated from each other. These gas volumes shall fill out the whole space to the greatest possible degree.
Most insulation materials serving to prevent the transport of convection heat are based on the principle of retaining small air pockets in the material. Accordingly, heat transport by gas flow is inhibited. Foamed plastics of varying fabrication and plastics material with more or less hermetic cells have to a great extent come into use as material for insulating against heat transport by convection.
Foamed plastics, e.g. styrene plastics, have also become extensively used for buoyancy in floating bodies. For floating bodies in water there is the particular problem that the buoyance material must have as small a tendency to take up water as possible. Diffusion of moisture into the material through the cell walls must be low.
A general requirement placed on an insulation material or buoyant material for filling relatively large spaces is that the material shall be light and have such mechanical properties that without problems the material can be inserted into spaces, e.g. through a limited opening, and be packed into the space so that a space with complicated configuration is practically filled with the material. Conversely, and in cases where so required, the material should also be able to be taken out from the space without any great problems. This requirement can occur in such cases where the structure forming the space needs to be repaired or where a greater or less amount of the material forming the fill needs to be exchanged for new such material. Finally, the material should be cheap, which is of particular importance, since in many cases it is a question of filling large volumes.
It has been proposed to use light spherical shells of plastics material, e.g. table tennis balls, as buoyant material in pontoons and for lifting sunken shipwrecks. This type of buoyant material is satisfactory in itself from the buoyancy aspect, but has the drawback that for geometrical reasons the space cannot be filled completely and also that the material is relatively expensive. Transporting the material to the place of use will also be complicated and cost demanding, since the whole of the buoyant volume must be transported from the place of manufacture to the place of use. This drawback is naturally applicable to all other buoyant material or insulation material which does not have the advantage of being manufacturable in the immediate vicinity of the place of use.
The object of the invention is to provide a fill element of the kind given in the introduction, which is suitable for filling relatively large spaces for serving as heat insulating or buoyant material, where the element can be inserted into such a space without any problems via an opening of limited size for packing into the space even if the latter has a complicated configuration, where it can be removed from the space without difficulty, where it has low weight and where it can be easily manufactured in a simple mobile plant in the immediate vicinity of the place of use.
This object in accordance with the invention is achieved in that the element is web-like and comprises a series of gas volumes arranged separately and successively, which are each defined by a respective gas pocket of a continous flexible casing divided into gas pockets.
Such a web-like element can be manufactured with the aid of simple known means in a practically unlimited length at a suitable place in the vicinity of the place of use. In such a case the starting material comprises a known tubular plastic casing without gas filling. The casing is supplied and transported in the form of a web wound up on a reel. The web then r
REFERENCES:
patent: 4076872 (1978-02-01), Lewicki et al.
patent: 4262046 (1981-04-01), Eitel
patent: 4287250 (1981-09-01), Rudy
patent: 4804565 (1989-02-01), Rast
patent: 4847126 (1989-07-01), Yamashiro et al.
Kelman Kurt
Van Balen William J.
LandOfFree
Web-like fill element does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Web-like fill element, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Web-like fill element will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-291464