EP0021532B1

EP0021532B1 - Method of manufacturing a ground coating and semi-product for the same

Info

Publication number: EP0021532B1
Application number: EP19800200582
Authority: EP
Inventors: Jan Timmermann; Harm Last; Gerrit Eenkhoorn; Gerrit Timmerman
Original assignee: Robutel BV; Timmatra BV
Current assignee: ROBUTEL B.V.; TIMMATRA B.V.
Priority date: 1979-06-22
Filing date: 1980-06-18
Publication date: 1984-12-05
Also published as: DE3069743D1; NL7904906A; EP0021532A1

Description

The invention relates to a method of manufacturing a ground coating, for example, a road or talus coating, matresses and the like on the basis of a woven mat of preferably synthetic warp and weft yarns, in which bonding means are fastened to the mat for applying to one side of the mat curable cast material, for example, bitumen or concrete.
In hydraulic engineering it is known from DE-A-2.344.178 to construct mattresses from a tissue of the kind set forth above, across which pins are passed in a manner such that on the pins emerging from the other side of the mat concrete can be poured to form strengthening concrete blocks.
It will be appreciated that bonding blocks on a mat in this way, it is still possible that a waterflow remains in the space between the blocks and the mat, what may lead to loss of ground material underneath the mat forming holes in the supporting ground layers.
The invention has for its object to provide a method in which the bonding means can be simply applied by means of a machine and in which, in addition, an uninterrupted adhesion is obtained along substantially the whole contact surface between the ballast blocks of the coating to be applied and the mat.
The method according to the invention is distinguished in that by means of a needle machine a plurality of tissue-foreign wires or yarns are passed from the other side across a certain or whole area of the mat in order to form a plurality of relatively small loops, after which the curable material is poured into the loops of the mat.
The loops are made in the tissue by means of a needle machine known in the textile factory.
The needle machine is hereto running just as fast as the weaving loom, so no time-loss is involved, when manufacturing the mat.
By means of such a needle machine the loops to be provided can be arranged in accordance with a given programme in any desired pattern so that any desired pattern of ballast blocks can be obtained on a mat, for example, for a mattress.
From DE-U-7.400.948 it is known to form loops in a woven mat by means of a ribbon. Said ribbon will deform the mat-textile making apertures what also leads to a non-uniform filter action through the mat. It is further noticed that the ribbon is crossing the mat at two distinct places, whereas the loops according to the invention can be pulled out without affecting the mat material.
The invention is further related to a semi-product for manufactoring a ground coating according to claim 1 consisting of a woven mat having a plurality of tissue-foreign wires or yarns passed in loops across the mat as claimed in claim 2.
The invention will be described more fully with reference to a drawing:

the drawing shows in
- Fig. 1 a perspective view of a first embodiment of a ground coating, particularly, a mattress,
- Fig. 2 a view corresponding with that of Fig. 1 of a further embodiment of a ground coating,
- Fig. 3 a sectional view of a detail of the tissue with loops provided therein.

Referring to the figures numeral 1 designates a tissue preferably of synthetic warp and weft yarns. This tissue can be manufactured on a conventional loom and any desired weaving pattern may be used.
After the manufacture of the tissue loops of a tissue-foreign yarn are passed across the tissue, the loops being designated in the figures by numeral 2. These loops are passed across the tissue only at the places where finally the curable casting material 3 has to be applied. This material is formed in Fig. 1 by relatively spaced concrete blocks moulded by a suitable gauge arranged on the mat 1, the gauge being removed after curing, after which a rigid adhesion is obtained between the cured concrete 3 and the loops 2 and the mat 1 respectively.
Fig. 2 shows a further embodiment in which loops 2 are passed across the mat 1 throughout the surface thereof, after which a layer of asphalt or bitumen is spread on the mat 1. During the plastic phase of the asphalt 4 adhesion is established between the asphalt 4 and the loops 2 and hence adhesion with the mat 1. Such a structure may be suitable for talus protection or for bicycle paths and the like.
Fig. 3 shows a cross-sectional view of the tissue of the mat 1 . 1' designates the weft yarns and 1" the warp yarn of the tissue. 5 Designates the tissue-foreign wire, which is passed across the tissue 1 at least two places A and B so that after adhesion of the curable material a solid connection with the mat is obtained by means of the portions of the wire extending along the bottom side of this mat.

Claims

1. A method of manufacturing a ground coating, for example, a road or talus coating, matresses and the like on the basis of a woven mat (1) of preferably synthetic warp and weft yarns, in which bonding means (2) are fastened to the mat for applying to one side of the mat curable cast material (3), for example, bitumen or concrete, characterized in that by means of a needle machine a plurality of tissue-foreign wires or yarns (5) are passed from the other side across a certain or whole area of the mat (1) in order to form a plurality of relatively small loops (2), after which the curable material (3) is poured into the loops (2) of the mat.

2. A semi-product for manufacturing a ground coating according to claim 1 consisting of a woven mat (1) having a plurality of tissue-foreign wires or yarns (5) passed in loops (2) by means of a needle machine from one side of the mat to the other across a certain or whole area of the mat to form a plurality of relatively small loops (2) which can be embedded in a curable material poured onto the mat so as to anchor the curable material to the mat.