FR2490922A1 - COVER TAPE ROLL - Google Patents

Abstract

The invention relates to a cover-band roll which consists of overlapping strips lying parallel to one another and extending in a longitudinal direction, the overlaps of the component strips being connected to one another by spot welding. The cover-band roll is characterised in that the component strips extend parallel to the axis of the cover-band roll. The invention also relates to a process for producing a cover-band roll. This process is characterised in that, during the rolling up of the finished roll part, a component strip is added and is connected by spot welding to the overlap point of the component strip previously applied whilst a strip thickening or a lamella is provided between the overlap points of the component strips at the location of the spot weld, stiffening bands being formed in a similar way, together with these, to form a roll and being respectively connected to the component strips. The invention relates, furthermore, to an apparatus with a cover-band roll. This apparatus is characterised in that a plurality of cover-band rolls, which are not or are only partially rolled up, are connected to one another and are pressed against the wall, are stacked in a housing having a perforated base, whilst water is guided through the housing or is sprayed from the reinforcing tubes or the hollow seams or reinforced edges of the component strips.

Description

 The invention relates to a roll of covering tape which is composed of blades which are parallel to each other, which overlap longitudinally and are joined by points, as described in Dutch patent 121,361.

 The invention is characterized in that the elementary blades with longitudinal mutual overlap which constitute the overlap strip extend parallel to the axis of the roller.

 The invention relates to the manufacture and use of such a cover strip roll and the possibilities of reinforcing the cover strip roll, as well as to construction features which favor the use. The invention further relates to certain applications of such a roll of cover strip.

 For example, reinforcing strips can be arranged transversely to the elementary blades; these reinforcing strips, which are fixed to the blades, ensure the reciprocal connection and the cohesion of the blades. The overlap zones between elementary strips can be thickened at the connection points and an additional thickness or spacer can be interposed, but the strip can also be thickened at the fixing points of the reinforcing strips.

 It is very important to ensure good mutual cohesion of the elementary blades, and the mechanical strength of the covering strip in the winding direction is also generally very important, for the following reasons.

1) To allow the covering strip to be unrolled vertically on a roof without the need to immediately fix it with slats and tiles;
2) to allow the use of the cover strip in a vertical position freely suspended;
3) in agricultural applications, to allow later reuse of the cover strip after having used it to temporarily cover a product, as well as in cases where the strip is handled without precautions
4) mainly in agricultural applications, to avoid deterioration of the cover strip by the wind, however it can further reduce the risk of tearing by strong winds by making the reinforcement strips in the form of a hollow tube and by filling this tube with water or sand, while it can be seen that the covering bands are not lifted by the wind by providing sufficient spacing between the parts of the elementary blades which overlap each other;
5) to allow the cover strip to be cleaned, for example in the case where it is used as a filter (which will be explained more fully below), and to reuse it.

 In the reinforcement strips, or in edges or strips if the reinforcement strips are produced in the form of a hollow tube, holes may be provided with reinforced edge for fixing to the object or to the product to be considered. , by means of a spit or a cord. These holes can be covered with a flap.

 The roll shape described above which is given to the cover strip makes it possible to alternate flexible elementary blades with rigid blades, which can be made of a different material, more rigid than that of flexible blades, which ensures the possibility of winding while the rigid blades allow vertical unwinding on grindstones or heaps of agricultural products which have an uneven or discontinuous surface or on roofs which are composed only of farms, etc ...

 It is also possible to reinforce the flexible blades by providing them with a cord which can be filled with a ballasting material, for example water, sand, metal wire, etc.

 To cover the top of a wheel or the fate of a roof, it may be desirable for some of the elementary blades to be wider than the others.

 The covering strips according to the invention can be used not only as protection against rain but also to protect from sunlight, for example in the form of a canopy which extends far downwards above terraces in hot regions. Fresh air passes through the strip, however the strip eliminates the possibility of seeing through. To allow pleasant lighting as well as to give the strip an attractive appearance, the elementary strips can be of different colors or have different characteristics of transparency and reflectivity, this possibly between different parts and / or between the two faces of the same blade.

 In agriculture, the heat of the sun is often used to dry crops, in order to save the energy that should be purchased. This concerns products which are too humid to be able to be stored or delivered (or which can then only be sold at a lower price).

Certain products must be dried beforehand so that they can then be properly beaten or treated, sorted, etc. . .The usual devices such as easels, racks, stretched wires, or even the simple piling up of grindstones without covering can sometimes provide appropriate protection against rain. Post-drying in an uncovered pile of hay bales is. also random. Products such as potatoes, onions, bulbs, corn on the cob, etc. must be dried in roof-shaped millstones and must be covered with thatch, straw, etc., covering which is both expensive and laborious. Under a continuous sheet, ventilation is insufficient. The vertically unrolled cover strips therefore represent the best coverage. For potatoes, the elementary blades should not be transparent to light, otherwise the tubers will turn green. An important property of the cover strip according to the invention consists in the convenience of the winding and unwinding operations which are necessary for temporarily exposing the products to natural agents, for making partial deliveries, etc.

 Potatoes are also frequently stored in a heap on the field in late fall, although precautions should also be taken to protect them from severe storms. The weather resistance is sufficient with the reinforcement described above of the cover strip when this reinforcement is produced in a relatively solid form and using the possibilities of ballasting and fixing.

 It has been found that the covering strips composed of blades provide sufficient protection against night frost (this protection even being greater than that provided by a single-layer sheet), in the sense that the potatoes are drier and that the heat from natural heating moves best out of the pile. However, it is necessary to take additional measures to protect oneself from the winter frost, which is frequently accompanied by wind, these measures can be for example the installation of a layer of soil on the covering strip with possibility of continuous evacuation of gas, which prevents damage due to overheating. After carefully removing the layer of soil, which is especially valid for sandy soils, it is possible to roll up and reuse the cover strip.

 When the reinforcing strips are produced in the form of pipes and when these pipes contain water, uniform heating can be achieved. These reinforcement strips in the form of a pipe can be pierced with watering holes to circulate the liquid through their walls (and also possibly due to the fact that the frozen mist reinforces the insulation).

 Resistance to storms and the possibility of ensuring good fixation are also important characteristics when it comes to covering large haystacks or straw in autumn and winter. This is not a problem in the case of the embodiment of the cover strip roll which has been described above, and reuse is also possible in this case.

 In the field of horticulture in the open air, the cover strip can be unwound horizontally on recent fine seedlings, to protect them from driving rain and the consequent closing of the pores of the soil, as well as hail and frost. nocturnal. In the case of the horizontal arrangement, rainwater infiltrates through the strip, so that one has to water only to a limited extent. The elementary strips of the covering strips intended for these applications may preferably be transparent. Seedling germination is slightly accelerated by the rise in temperature observed under the cover.

When the height of the plants becomes too large, the tape can be rolled up. However, the covering strip can be placed at a higher level by planting small stakes in the ground and unrolling the strip on these stakes, the alternation between the flexible blades and the rigid blades being useful in this case. In addition, for planting bulbs in winter, the cover strips can be used for protection against frost, hail and snowstorms, and also against sand blown by the wind.

The conventional covers used previously in the cultivation of bulbs consist of a thatch or straw coating which is costly in bulb planting regions at the same time that it must be free of weed seeds and pathogenic germs. In addition, recovery and subsequent removal operations are laborious.

 The cover strips according to the invention require much less work and the duration of the protection obtained when the strips are arranged in elevation as described above is longer. They make it easy to provide temporary cover before spreading fertilizers and watering. When the cover strip is placed at a sufficiently high level, it can be used on bulb plants and it can sometimes replace conventional cold greenhouses.

 A solid cover strip that can be rolled up and reused repeatedly can find a large number of applications in agriculture and horticulture. New possibilities may appear later.

 In many cases, the covering strip according to the invention can replace permanent constructions such as hangars, greenhouses, silos, etc. Permanent constructions require maintenance and amortization, they age frequently quickly, must be cleaned and remain unused for most of the year, however they take up a lot of space and sometimes disfigure the landscape.

 The rolls of cover strips can find different applications in many fields of very diverse nature.

 A simple application of the roll as it is, not unwound, consists in its use as filter material in a water filter tank. In a rectangular container with a perforated bottom, the rollers are compressed horizontally against each other as well as against the walls, and several layers are superimposed. These rollers thus obstruct the passage in the tank, so that the water must then find its passage in the interstices separating the overlapping blades of the rollers. This solution is lighter than a tank filled with gravel, and you can clean the filter thus obtained in a very simple way, by removing the rollers, unrolling them on the floor, and washing them, tightening them and putting them back in place after having rolled them (this nipulation slightly enlarging the space between the overlap areas). In this application, water can be brought through the tank or be introduced in the form of jets divided by reinforcing tubes or by hollow cords or swollen edges of the elementary blades.

 A more important application is the use of the roll of covering tape in a large-scale water treatment plant, which is composed of a large shallow basin with a cemented bottom on which a layer of gravel is deposited in which of the perforated tubes are embedded to evacuate the purified water. The covering strip according to the invention can then be unwound over the layer of gravel, a layer of sand then being deposited on the covering strip. The water to be purified is raining or is spilled on the sand. For cleaning, remove the layer of sand and rewind the covering stripi then, after cleaning, unroll this strip again and cover it with new sand. The gravel and the outlet tubes can be left in place. Frequently, the cover strip can also be left in place, in which case it is sufficient to deposit a layer of new sand.

 For air cleaning, two rolls of covering tape can be unrolled vertically, keeping them slightly spaced, in a passage or in a corridor in which an air flow circulates, the air then having to pass through the two strips. , and water is sprayed between the two cover strips. This water flows along the overlap zones between the blades and falls into a gutter, so that one can thus purify the air from dust, bad odors and certain gases and also humidify.

 Arranged horizontally on the ground, the cover strips can be used to separate two different types of soil while the water that infiltrates the ground passes through the cover strips sufficiently. When, for example, a layer of sand is deposited on a clay or peaty subsoil to lay tiles, etc., it is avoided by depositing the covering strip on the subsoil only after some time, the sand does not infiltrate into this subsoil (well known phenomenon) and that, as a result, the tiles or the clinker do not collapse.

 Although the cover strip also increases the load bearing capacity of the soil, the indirect effect of maintaining the sand layer is much greater.

When the subsoil contains clumps or blocks, a sufficient quantity of sand deposited on the cover strip infiltrates into the mutual overlap zones of the elementary blades and guarantees the drainage of rainwater which infiltrates through the paving.

 To avoid clogging of the drainage pipes, it is also possible to deposit a narrow covering strip at a given height above the pipes in the mass of gravel.

 An important application of the cover strip in a horizontal position may consist in the separation of two kinds of water which have different temperatures and contain different concentrations of dissolved substances in a basin or in a pond, which can be useful for the storage of thermal energy in the form of hot water.

 We cover the bottom and sides of a basin or pond with an insulating layer. Up to a certain depth below the edge level, for example 1 m below the edge, the basin is filled with water weighed down by a salt in solution or by a suspended matter. In this weighted water layer, there are finned tubes in which water or air is circulated to provide or extract heat. The cover strip is deposited on the weighted water layer, and this strip is made so that it floats on the weighted water layer but that it sinks to the bottom and the non-weighted water layer which surmounts it. , layer which is fed by atmospheric precipitation or emptied by an overflow provided above the covering strip. In this application, the elementary strips can be as much as possible made of an insulating material, but the possibility of winding as well as the space between the overlapping parts so as to give the air bubbles and gases possibly present the possibility of escaping.

 The drinking water tanks can be covered, to protect them from algae, with covering strips which are not transparent to sunlight and which, for this purpose, consist for example of blades of a black sheet alternating with elementary blades made of a material which is able to float and which is not transparent to sunlight. The possibility of winding is also important in this case, so that the cover strips can be rolled up before winter. This can be achieved with the help of a suitable raft on which a suitable winder is mounted and means by which the cover strip can be unwound before spring, so that the wear of the cover strip is minimal and that cleaning and repair can possibly be carried out during the winter.

 If the covering of these drinking water tanks, which are frequently very large, proves to be too costly, it may be sufficient to cover a water channel connecting the basin to the purification installation. This channel must be wide and deep enough for the water to remain there for seven days before reaching the installation. At the end of this time, the algae and other plants were eaten by the vermin.

 It is important to leave sufficient space for oxygen supply between the parts of the elementary blades which overlap each other. If necessary, air can be bubbled into the water.

 To insulate a sloping roof, one or two covering strips according to the invention can be unrolled vertically one on the other, possibly in such a way that the elementary strips of the upper strip cross the strips. elements of the lower band. When the elementary strips are made of a well insulating material, an appropriate insulation is obtained while ensuring the breathing of the roof, even if tiles are placed on the covering strips.

 In the case of temporary construction roofs provided with flooring and tiles, it is possible to use covering strips comprising transparent elementary strips, this application also making it possible to obtain reasonable insulation in the case where the strips are used in double thickness and the strips can then be used repeatedly since they can be easily wound and stored.

 The manufacturing of the roll of cover strip can be carried out by adding an elementary blade during the winding of the part of the roll which has been previously prepared and by fixing this elementary blade on the preceding blade, overlapped with respect to that -this, and also to the reinforcing strip, which is also wound.

 The mutual overlap zones of the elementary blades can be assembled in points by gluing, fitting, mechanical fixing using a bolt, sewing, etc.

 Between the parts which overlap each other, an over-thickness or a plate can be inserted at each assembly point. The reinforcing strips can be attached to the elementary blades in the same way.

 The elementary blades can be composed of a flexible material, for example a synthetic sheet, a fabric of textile fibers, thin metal, rubber, canvas, sulfate paper, tar paper, cellulose, of mica, etc. The elementary blades can also be constituted alternately by flexible blades and rigid blades, for example blades made of a hard synthetic material, of a foam of plastic material, of "Isorel" wood. , a rigid metal, a ceramic material, asbestos, putty, glass, etc ...

Other characteristics of the construction and certain applications of the cover strip roll according to the invention will appear during the description which follows. In the accompanying drawings, given solely by way of example,
- Fig. 1 shows the roll of covering tape seen from the side, with an unrolled part
- Fig. 2 is an end view of the cover strip roll
- Fig. 2b shows how a thin (flexible) elementary blade is fixed overlapped to a thicker elementary blade
- Fig. 3 shows two cover strips suspended vertically between the ceiling and the floor of a passage;
- Fig. 4 shows a cover strip arranged in a horizontal position in a storage pond or pond ;;
- Fig. 5 shows a cover strip arranged in a horizontal position in a water filter
- Fig. 6 shows the horizontal use of a cover strip in the ground;
- Fig. 7 shows the use of the cover strip to combat the growth of algae in a drinking water tank
- Fig. 8 shows the arrangement of two double thickness cover strips on a roof
- Figs. 9a and 9b show, respectively at the end and the end, rolls of non-unwrapped cover strips piled up in a simple filter tank.

- Figs. 10, 11, 12 and 13 illustrate agricultural applications of the cover strip according to the invention .;
Fig. 1 represents a roll of covering strip seen from the side, with an unrolled part. The reference 1 designates the roll, the reference 2 the imaginary axis of the roll, the reference 3 designates the elementary blades which extend parallel to the axis. of the roller. Reference 4 designates a reinforcing strip which extends transversely to the length of the elementary blades and which is pierced with holes 5 provided to allow the covering strip to be fixed to the object to be covered, on the ground. or to an adjacent cover strip. The reference 6 designates the unwound part of the strip.

 Fig. 2 is a top or end view of the cover strip roll, in which the references have the same meaning as in FIG. 1.

 Fig. 2b shows how a thin (flexible) elementary blade is fixed to a thicker elementary blade, with mutual overlap. The reference 3 designates the thin blade and the reference 33 the thick blade. The reference 8 designates a bolt, rivet, metal wire, etc., while the reference 7 designates an intermediate element or an additional thickness. The assembly of two thin blades one on the other with mutual overlap has the same appearance.

 The following figures of the drawings illustrate applications of the tape roll according to the invention.

 In Fig.3, two cover strips 11a and 11b are suspended vertically at a certain mutual spacing between the ceiling 10 and the floor 13 of a passage, above a drainage channel 12. The flow of air is indicated by arrows, and the water projected in jets divided between the covering bands and which descends between these bands is represented by broken arrows. When air treatment is unnecessary, the strips can be rolled up.

 Fig. 4 shows how cover strips can be arranged in a horizontal position on a storage tank.

 Reference 22 designates the insulated and sealed bottom of a basin. The layer of water which must be heated and which has been heavy with a solution or suspension material has been shown in dashed hatching. The covering strips, possibly insulated, which float on this layer of water are designated by the reference 20, the finned tubes used to supply or extract the thermal energy being designated by the reference 24. The surface of the layer of water natural which surmounts the covering strip is designated by the reference 23.

 Fig. 5 shows a large surface water filter in which the cover strip is arranged in a horizontal position to separate the filtering sand from the gravel. The reference 41 designates the cemented bottom of the basin, which is surmounted by the layer of gravel 42, which contains the perforated drains 43. The covering strip 44 is unwound on this layer of gravel. On this covering strip is deposited the layer of filtering sand 45, on which the water to be purified 46 is poured in a divided or extended jet.

 Fig. 6 illustrates the horizontal use of the covering strip in the ground, the lower layer 30 of the ground being covered by the covering strip 31, on which the layer of sand 35 is deposited. The tiles or clinker 36 are placed on this layer of sand.

 Fig. 7 illustrates the use of the cover strip to combat the growth of algae in drinking water tanks. The cover strips are made here of a material 50, 51 which is opaque to sunlight but has sufficient buoyancy. The reference 52 schematically represents the reel device mounted on a kind of raft 52 '.

 Fig. 8 shows how two overlapping strips are deposited in double thickness on a roof, the elementary strips of one of the strips crossing those of the other strip since the two strips were unwound obliquely to the ridge line 70 but with opposite angles, so that the elementary blades 71 cross the elementary blades 72 of the other strip, thereby ensuring maximum insulation while retaining ventilation.

Fig. 9a shows at the end how rolls of cover strip 63 which are not unwound are stacked in a simple filter tank. The tank 61 has a perforated bottom 64, and the rolls of covering strips are stacked there horizontally, the water 65 being conveyed to the filter as indicated by the arrows and flowing horizontally in the strip rolls. Fig. gb represents the bin seen from the side,
Figs. 10, 11, 12 and 13 illustrate agricultural applications, the cover strip being designated by the reference 81 in each case. In the case of FIG. 10, the strip is placed on a pile of mals, potatoes, bulbs, onions, carrots, etc. arranged in bulk.

 In Fig. 11, the strip covers bales of hay or straw arranged in small heaps for post-drying on site.

 In Fig. 12, the strip is placed on unpacked hay, peas, beans, etc., not beaten, placed on easels, racks, stretched wires, etc.

 In Fig. 13, the cover strip is placed on large racks for storing hay or straw bales.

Claims (19)

 1 - Roll of covering strip, the strip of which is composed of blades which are parallel to each other, and arranged with longitudinal overlapping, the parts of the elementary blades which are overlapping being assembled by points, this roller being characterized in that the elementary blades (3 ) extend parallel to the axis (2) of the roller (1).  2 - Roll of cover strip according to claim 1, characterized in that it comprises reinforcing strips (4) which extend transversely to the elementary blades (3) and are fixed to these blades and wound at the same time as the blades.  3 - Roll of cover strip according to claim 2, characterized in that the reinforcing strips are constituted by a flexible pipe provided with fixing edges.  4 - Roll of cover strip according to any one of claims 1 to 3, characterized in that the parts of the elementary blades (3) which are overlapped are assembled with the interposition of a thickener element (7).  5 - Roll of covering tape according to any one of claims 1 to 4, characterized in that the elementary blades (3) are alternately constituted by suitably flexible blades and by elementary blades made of a rigid or not very flexible material , so that the elementary blades have a large difference in flexibility between them.  6 - Roll of cover strip according to any one of claims 1 to 5, characterized in that the elementary blades (3) are strongly different from each other by their width.  7 - Roll of covering tape according to any one of claims 1 to 6, characterized in that the elementary blades (3) are provided, in their longitudinal direction, with a hollow bead or with a hollow swollen edge, this hollow bead or this hollow swollen edge which can be filled with a ballast or reinforcing material.  8 - Roll of covering strip according to any one of claims 1 to 7, characterized in that the elementary blades (3) differ from one another by their characteristics of color, transparency and light-reflecting power, and in that certain parts of the same strip and / or the front side and the opposite side of the same strip differ in their characteristics of color and of reflecting power.  9 - Roll of covering strip according to any one of claims 1 to 8, characterized in that the reinforcing strips (4), or the fixing edges of these strips in the case of the embodiment in pipes, are drilled with holes (5) on reinforced edge.  10 - Roll of covering tape according to any one of claims 1 to 9, characterized in that the reinforcing strips (4), produced in the form of hollow tubes, can transport water and are provided with holes d watering.  11 - Roll of cover strip according to any one of claims 1 to 10, characterized in that, in the case of alternately flexible and rigid elementary blades or elementary blades only flexible, the elementary flexible blades are composed of a sheet synthetic material, fabric, mica, parchment, rubber, canvas, tar paper, sulphate paper, thin metal, etc., and in that the rigid or inflexible elementary blades are composed plates of synthetic resin, wood, Isorel ", putty, ceramic, asbestos, glass, slate, rigid material, plastic foam, etc. ...  12 - A method of manufacturing a roll of covering tape according to any one of claims 1 to it, characterized in that during the winding of the already ready part of the roll, an elementary blade is added and it is assembled by points to an overlapping part of the elementary blade previously mounted; an excess thickness of the blade or an attached washer being interposed between the parts of the elementary blades which are overlapped, in line with the assembly points, the reinforcing strips being wound together with the blades and being assembled to the elementary blades at each pitch of the making.  13 - Device characterized in that quVil comprises several rolls of covering tape (63) according to any one of claims 1 to 11, not unwound or only partially unwound and stacked in a tray (61) provided with a perforated bottom (64 ), the rollers being juxtaposed and compressed between the wall of the tank, water (65) can be brought through the tank or be introduced in the form of jets divided by reinforcement tubes or by hollow beads or edges swollen elementary blades.  14 - Device characterized in that it comprises two rolls of covering strip (lla, llb) according to any one of claims 1 to 11, unrolled vertically, at a slight separation from one another, in a passage in which an air flow can be passed, this air flow being able to circulate in the spaces which separate the parts of the elementary blades which are overlapped, however that water can be projected in a split jet between the strips of covering suspended in parallel.  15 - Device characterized in that it comprises a roll of covering strip according to any one of claims 1 to 11, the covering strip (44) being horizontally unwound on a layer of gravel (42) deposited on the bottom ( 41) of a water purification basin, and in that a layer of sand (45) is deposited on the covering strip.  16 - Roll of covering tape according to any one of claims 1 to 11, characterized in that it is unwound horizontally in the ground, under a paving (36) or above a drainage pipe.  17 - Roll of cover strip according to any one of Claims 1 to 11, characterized in that the cover strip (20) is unwound horizontally to a given depth floating between two waters, and in that the water which overcomes the cover strip has a temperature and a content of dissolved or suspended substances different from the temperature and the content of these substances of the water situated below the cover strip.  18 - Roll of cover strip according to any one of Claims 1 to 11, characterized in that the cover strip (50, 51) is unwound and floats on the surface of a sheet of water, the elementary blades of this strip being opaque to light and the cover strip being connected to a floating reel (52).  19 - Roll of covering strip according to any one of Claims 1 to 11, characterized in that the covering strip (71, 72) is unrolled vertically on an inclined roof, in single or double thickness, and in that, in the case of a covering strip unwound in double thickness, the elementary strips of the strips constituting the two thicknesses cross each other, tiles being placed on the covering strips.