Filtration means for drainage tubes and/or drainage hoses

Technical field

Filtration means for drainage tubes or drainage hoses, which is formed of textile stripe for longitudinal mounting on a drainage tube or hose.

Background art

Drainage tubes or hoses have perforated walls, through which water from soil of a wet land is drained into their inner space. Nevertheless, simultaneously with the water also soil is being brought into this inner space, which due to a small gradient of drainage istdepositing here. Through this the efficiency of the drainage system is reduced, possibly the system becomes totally functionless.

The filtration means arranged on surface of the drainage tubes serve as a protection against penetration of solid particles into the drainage tubes. Some solutions utilise ^' mounting of drainage tube into a textile hose. With respect to relatively great lengths of drainage tubes or hoses and mutual radial clearance of drainage tube and the textile hose, it is necessary to use special fixtures for slipping the textile Jnose on the drainage tube. Next to this, there are necessary the means fqr gripping of a textile hose, that enable to exert a relatively great force to shift the hose on a surface of the tube.

According to CZ 17097-UJ1 this problem has been solved by a hose-like sleeve, that along its length Is provided with means for its gripping during slipping. The means for gripping is created using edges of the stripe, of which the sleeve is produced. The width of the stripe is greater at minimum by double the width of border, which is. created by applying one to another the surfaces of

! ' j . -i. both edges of the sleeve stripe and at which it is possible to grip the sleeve

;c\ . during slipping it over the drainage tube. an-..

Production of this borcjer by sewing, possibly by bonding is costly and in conditions of some workplaces in a terrain the sleeve can be slipped over the tube quite hardly.

. The solution according-to.CZ 17677 U1 utilizes the drainage tube, whose outer surface is at least partially. provided with means for fastening the filtration means. These are for example suitable protrusions formed directly by a surface of the tube already during its production, or the means for fastening the filtration means are on the tubes applied for example by bonding after the tube is produced. Then the tube may be supplied independently to the workplace in a terrain in suitable lengths, while fastening of filtration means to its surface is performed by a simple method, preferably still before placing the drainage into the ground. The disadvantage is a^igher production price of the tube, moreover due

.damage of surface of the; tube^dpes not exert.ajiy influence upon .the pQSsjbjlity

.of, quality fastening of filtration material, at the same time preserving ^• the possibility of an easy installatipn of filtration material on the drainage tube or hose in terrain conditions^ , . _!: , _cj , .

Principle of the technical solution

whose principle consists iη.i that, along at least one longitudinal edge of the textile stripe at least one connecting means is situated. ,; Positioning of connecting means on the textile stripe substantially reduces the risk of its damage at transportation and further manipulation, at the same time it may be advantageous also from the point of view of the final total production price of drainage ^: tϋbe or hose.

Preferably, the width of the textile stripe equals to circumference of the respective drainage tube OF hose. At the same time it is preferred, if the

connecting means is positioned on at least one longitudinal edge of the textile stripe.

Such a width of the stripe after application of the textile stripe on the

longitudinal edge of the textij _. e _: stripe is provided with removable manipulation protective foil. This facilitates manipulation with the textiles during transportation, when by unsticking the manipulation protective foil immediately before fastening the textiles on the drainage tube or hose a maximum adhesive power of the connecting means is utilised.

Preferred alternative ipf the solution is a connecting means created on both longitudinal edges of the textile stripe, at the same time it is formed of a coating of adhesive which is covered by a removable manipulation protective foil. This solution enables iri some cases to stick much more easily the textile stripe directly to a straight tube or hose. The coating of adhesive applied may be interrupted.

It is also preferred if, the width of textile stripe is greater than the outer circumference of the respective drainage tube or hose. i

In another alternative' embodiment the filtration means comprises two mutually parallel arranged connecting means, out of which at least one is positioned on one longitudinal edge of the textile stripe. Preferably, both connecting means are positioned on longitudinal edges of the textile stripe. This solution further contributes to perfect enwrapping of the drainage tube or hose also in harder terrain conditions, which increases reliability of filtration effect of covering of the drainage tube or hose.

The connecting means may be formed of two-sided self-adhesive tape, which by one side is stuck to the textile stripe and its second side is covered by a removable manipulation protective foil.

Mass production of self-adhesive tapes with protective foil is one of the prerequisites for low costs Jn manufacturing of drainage tubes and hoses provided with the filtration covering.

Description of the drawing

Exemplary embodiments of the technical solution are schematically represented in the drawing, where the Fig. 1 , 2 and 3 show preferred embodiment of the textile stripe, whose width equals to outer circumference of the tube or hose, while embodiment according to the Fig. 1 and 2 comprises one connecting means positioned on one longitudinal edge of the stripe and the embodiment according to the Fig. 3 comprises always one connecting means positioned on both longitudinal edges of the stripe, the Fig. 4 to 9 embodiment of the textile stripe, whose width is greater than the outer circumference of the tube or hose, while embodiment according to the Fig. 4 and 5 comprises one connecting means, the embodiment according to Fig. 6 and 7 comprises two connecting means arranged in vicinity of one edge of the stripe, the embodiment according to the Fig. 8 and 9 comprises two connecting means arranged always in vicinity of one and second edge of the stripe, and the Fig. 10 example of the device for production of filtration means according to the technical solution.

Examples of embodiment ,

Filtration means according to the technical solution is applicable for all common types of drainage tubes and drainage hoses, thus for drainage with smooth surface as well 'as for the crosswise shaped (corrugated) drainage. In examples of embodiment there will be further described only drainage tubes, nevertheless the filtration means may be used for all the above mentioned drainage means.

Filtration means 1. according to the Fig. 1 , comprises a stripe H of textile made e.g. of a non-woven geotextile, whose width equals to outer circumference of the drainage tube 2. Along one longitudinal edge of the stripe

H on the stripe from above by about half of its width the connecting means 12 is stuck comprising an adhesion layer, at this embodiment formed of one-sided self-adhesive tape 121, while a portion of the width, preferably half of the width, of this one-sided self-adhesive stripe 121 overlaps the edge of the stripe 12 and from its adhesive side is covered by a removable manipulation protective foil

122. Length of the stripe H of filtration means 1 equals to the length of drainage tube 2.

Upon positioning the stripe 11 on surface of the drainage tube 2 at first onto surface of the drainage tube essentially parallel with axis of the drainage tube 2 the free edge of the stripe H is placed, after then the drainage tube is enwrapped by the stripe H so that the longitudinal edges of the stripe H practically mutually are in contact. Consequently, from the portion of the onesided self-adhesive tape 121 overlapping the edge of the stripe H the manipulation protective foil 122 is removed, and the adhesive surface of the self-adhesive tape 121 is stuck by pressure in direction of the arrow S to the free longitudinal edge of the stripe H. Embodiment according to the Fig. 2 is analogy of previous case. It differs by positioning of the connecting means 12 on the stripe H from below, thus from the side of the stripelH, which should be seated on surface of the drainage tube 2. Upon positioning the stripe H on surface of the drainage tube 2 or hose, the longitudinaf edge of the stripe H of the filtration means 1 provided with the connecting means 12 is applied by the non-adhesive surface of the self-adhesive tape 121 on surface of the tube 2 again essentially parallel with its axis. After enwrapping the drainage tube 2 and removing the manipulation protective foil 122 the second longitudinal edge of the stripe H is stuck by pressing in direction of arrow S on overlapping adhesive surface of the self-adhesive tape 121;, At this embodiment it is preferred if a one-sided self- adhesive tape is replace by ^! a two-sided self-adhesive tape, which by its free adhesive side immediately 'at the beginning of positioning the stripe ^' 11 to

surface of the drainage tube 2 gets stuck on this surface, which facilitates the installation.

Embodiment according to the Fig. 3 utilises the stripe H of textile, whose i 1 1 width again equals to the outer circumference of the drainage tube 2. On both longitudinal edges of the ' stripe H always one connecting means 12_ is positioned which is formed e:g. of one-sided self-adhesive tape 121 stuck by a non-adhesive side by means of an adhesive to the stripe H of textile or by a two-sided self-adhesive tape or coating of a layer of adhesive covered with manipulation protective foil 122. After removal of manipulation protective foil 122 from one self-adhesive tape 121 ^{or otner} connecting means 12 the stripe H is applied by the adhesive surface to the surface of the drainage tube 2 , again essentially parallel witfϊlts axis. After enwrapping the drainage tube 2 and removal of the manipulation protective foil 122 from the second self-adhesive tape 121, the longitudinal ^edge of the stripe H gets stuck by pressure ih direction of arrow S onto the ¹ : outer surface of the drainage tube 2 of the stripe 11, while both longitudinal edges of the stripe H practically touch mutually-

Embodiments represented in the Fig. 4 to 9 comprise a textile stripe, whose width is greater, than the outer circumference of the drainage tube 2.

Filtration means 1 according to the Fig. 4 comprises the textile stripe H, on one side of the stripe H along its oηe longitudinal edge is situated the connecting means 12 formed by the self-adhesive tape 121, ^e -9- by two-sided self-adhesive tape whose ;outer surface is covered by removable manipulation protective foil 122. Similarly, _r the connecting means 12 may be formed of onesided self-adhesive tape 12J. fixed to the stripe H by an adhesive or by a layer of adhesive applied on surface of the stripe H and covered by removable protective foil 122. Lengthjof filtration means 1 is identical with the length of drainage tube 2, or drainage hose, width is at least by a width of the connecting means 12 greater, than outer circumference of the drainage tube 2.

The Fig. 5 represents mounting of filtration stripe 1, respectively the stripe H on the drainage tube 2. Free longitudinal edge of the stripe IJ. is applied on surface of the drainage tube 2 , essentially parallel with its axis. The drainage tube 2 is enwrapped by the stripe H , while the connecting means 12 ,

after removal of manipulatioήc-protective foil 122, is by the adhesive surface pressed to the upper section^ αf surface of the stripe H in vicinity of its free longitudinal edge. Naturajly, .also opposite orientation of the connecting means 12 upon applying the stripe ^to the drainage tube 2 is possible. In all above mentionediembodiments it is necessary in case of usage of a

.. I h.' . ... ^• corrugated drainage tube 2, whose surface is wavy, to secure a perfect i , j ,, ^{• ■} ■• ^{• •} connection of longitudinal edges of stripe of the filtration means 1 also in places, where the longitudinal edge of the stripe λλ_ is not supported by a surface of the tube 2. For this purpose it seems to be advantageous to create an adhesive layer by a thick coating of adhesive on the stripe U and to cover this layer with a removable manipulation protective foil 122.

^' I ^{■ ■} λir .: - ^{'* '■} ' ^{■ "}

In embodiment represented in the Fig. 6 and 7 the filtration means 3 comprises the textile stripe 3|,:,on which in vicinity of its longitudinal edge are arranged side by side tw ...o ,_ c£o...nnecting means 32. Installation of the filtration means 3 is analogic to ; embodiment represented in the Fig. 4 and 5. Two connecting means 31 reducβ risk of imperfect connection of longitudinal edges of filtration means 3, especially with respect to usage of the corrugated drainage tube 2. ^•

In embodiment represented in the Fig. 8 and 9 the filtration means 4 comprise the textile stripe 4ϊ,, on which in vicinity of its longitudinal edges is arranged always one connecting means 42, 43. Preferably at least one connecting means 42 is jfόrrhed of a tape with self-adhesive surface covered with the removable manipulation protective foil 122 or a layer of adhesive covered with a removable manipulation protective foil. After removal of the manipulation protective foil 122 the filtration means 4 by means of a self-adhesive; tape forming the connecting means 42 is stuck in longitudinal direction on the. drainage tube 2. The tube 2 is more easier enwrapped by the filtration means 4 and the filtration means 4 is connected by the second connecting means 43. Width of the textile stripe 4J. is selected so that the connecting means 42, 43 are to be found near one to another. Upon sticking together the edges of the filtration means 4 using the connecting means 43, the reinforcement of f.he second longitudinal edge of the textile stripe 4_1 by

the connecting means 42 is utilised, which is especially preferred upon usage of. the corrugated drainage tube _; 2.

Of course, in all exemplary embodiments.the one-sided or two-sided self- adhesive tapes may be. used. Possibly, these tapes may be superseded by applying a layer of adhesive| _] whose sticking properties are similar to surface of self-adhesive tapes, while, the sticky surface of this adhesive is protected by manipulation protective foil 122.

The connecting means 12, 32, 42 may possibly be formed of a self- adhesive hook portion of the'λ/elcro fastener, or the not adhesive hook portion of the Velcro fastener fastened to the textile stripe λλ_ by means of an adhesive.

Filtration means ,i, '3J- ^ according to the technical solution may be preferably produced on the ^{^} device represented in the Fig. 10. Textile machine 5 produces a wide stripe^.6 of non-woven geotextile designated in the represented exemplary embodiment for production of five textile stripes 1_1_ of the filtration means 1, whose connecting means Vλ should be the one-sided self-adhesive tape 121 with; ^adhesive side coated with removable manipulation protective foil 122 according to the Fig. 1a. Behind the outlet of textile stripe 6 from the machine 5 across the stripe 6 five applicators 5I- of an adhesive are arranged, behind which in direction of motion of the stripe 6 of textile there are positioned the feeding hoppers 52 of one-sided self-adhesive tape 121 provided with protective foil 122. Next to this, in motion direction of the stripe 6 of textile four knives 53 are arrangeφso that distances of outlying knives 53 from edges of the stripe 6 , and mutuaPdistances of knives 53 are identical.

Onto the running!wide stripe 6 of textile by means of each applicator 51 a coating of adhesive 511 is. applied on which by means of the feeding hopper there is continually applied . and pressed down by the non adhesive side the one-sided self-adhesive tape 121 with removable manipulation protective foil

122. The blades of knives 53 after then separate the wide stripe 6 of textile into five stripes of filtration means i, which after then according to the need is cut into lengths corresponding to lengths of drainage tubes 2 being used. When the adhesive with permanent adhesive ability is applied, preferably the coating of adhesive 51J. is covered by the removable manipulation protective foil 122.

On devices, arranged; in, analogic manner,, also further filtration means possibly their further modifications are being produced, this protected in the meaning of the claims shown- below. For example, at production of the filtration means represented in the Fig.) 1 and 2, the machine 5 will perform sticking of the respectively modified si self-adhesive tape, with removed section of manipulation protective foil t|2. Upon production, of the stripes ϋ, 31., 41. the machine 5 will perform sticking of greater number of connecting means, etc.

Utilisation of the filtration means 1., 3, 4 according to the technical solution eliminates possible damage of connecting means at transportation and further manipulation, which occurs in case of their arrangement on the drainage

! • ^'" <! i. . , ^• tubes. At the same time comfort at application of the filtration means to the

On d . ^'• .■':' ^■ .< ^■ - v., ;λ: * -.- ^■' ;-e^[- in •- ^{■ ■} . ^■ ..- ^' 1,- ¹ Si . :- ^{■ ■} • ^{• •} . ^■• ' ^■ . , .?•!; ... ^' ion ?ny? _; ;,. ^; _; drainage tubes and hoses in a terrain is enhanced.

, _. Further substantial ..advantage represents, the possibility of economical production of the filtration ^elans,, as shown abpve.: . ,, ... ,

List of referential markings

1 filtration means 11 textile stripe , 12 connecting means

121 one-sided self-adhesive tape

122 protective foil

2 drainage tube

3 filtration means 31 textile stripe

32 connecting means

4 filtration means ,

41 textile stripe

42 connecting nieans 43 ^' connecting means

5- machine (for production of textile)

51 applicator of adhe'sϊve 511 adhesive

52 feeding hopper 53 knife ^!

6 stripe of textile

"S- ^' arVόw ' ^{: :}