PLASTIC NETTING IN THE FORM OF RASCHEL NETTING FOR THE CULTIVATION AND HARVEST OF ONIONS

Abstract

A plastic netting in the form of a raschel netting (2) for the cultivation and harvest of onions. The plastic netting has a plurality of pillar stitches (1) extending mutually in parallel in the longitudinal direction. These pillar stitches are transversely interlinked by traversing weft threads (4). Each pillar stitch (1) being formed by at least two threads (2, 3).

Claims

1-8. (canceled)

10. A plastic net, embodied as a raschel net, for cultivation and harvest of onions, the plastic net comprising a plurality of fringes (1) extending in a longitudinal direction parallel to one another and being connected transversely by weft threads (4) running to and fro, wherein the fringes (1) are formed respectively from at least two threads (2, 3), the at least two threads (2, 3) are embodied as bands and, before processing by means of a raschel machine, the at least two threads (2, 3) have a width which amounts to 1.25-3 mm (0.049-0.118 inches), and a thickness of the threads (2, 3), before the processing, amounts to 70-75 mm (2.7559-2.9528 inches).

11. The plastic net, embodied as a raschel net, according to claim 10, wherein the threads (2, 3), from which the fringes (1) are formed, are produced from polyolefins comprise polyolefins.

12. The plastic net, embodied as a raschel net, according to claim 10, wherein the threads (2, 3), from which the fringes (1) are formed, are produced from one of LLDPE (linear polyethylene with low density), LDPE (polyethylene with low density), HDPE (polyethylene with high density), PVC (polyvinylchloride), EVA (ethylene vinyl acetate) or comprise LLDPE, LDPE, HDPE, PVC or EVA.

13. The plastic net, embodied as a raschel net, according to claim 10, wherein the fringes (1) are respectively formed from two or three threads (2, 3).

14. The plastic net, embodied as a raschel net, according to claim 10, wherein the distance between two fringes (1) amounts to 1.27 cm (0.5000 inches).

15. The plastic net, embodied as a raschel net, according to claim 14, wherein in a case where the fringes (1) are respectively formed from two threads, a weight of the plastic net amounts to 16.5 gr/m.sup.2-18.5 gr/m.sup.2 (0.00338-0.00379 lbs/ft.sup.2), and a width of the threads, after the production of the raschel net, amounts to 0.75 mm (0.0295 inches)-1.25 mm (0.0492 inches).

16. The plastic net, embodied as a raschel net, according to claim 10, wherein that the residual elasticity of the fringes (1) lies in a range of between 17% and 19%5%.

17. The plastic net, embodied as a raschel net, according to claim 10, wherein the fringes (1) have a breaking strength which exceeds 90 kp (198.414 lbf).

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The invention is explained more closely in the following with the aid of the attached figures. The general construction of raschel nets and the construction and the mode of operation of raschel machines are very well known to the specialist in the art, so that in the following the features are described which are of significance for the present invention. There are shown:

[0021] FIG. 1: A schematic view of a fringe of the net according to the invention for the cultivation and for the harvest of onions;

[0022] FIG. 2: A schematic view of two fringes of the net according to the invention for the cultivation and for the harvest of onions and of the weft threads connecting these fringes with adjacent fringes; and

[0023] FIG. 3: A schematic view of parts of a net according to the invention and of relevant components of a raschel machine.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0024] According to the invention and with respect to the attached FIG. 1, the fringes 1 of a plastic net, embodied as a raschel net, for the cultivation and for the harvest of onions are formed from at least two threads; in the example shown in FIG. 1, the fringes 1 are formed respectively from two threads 2, 3. The fringes 1 are connected by weft threads with a zigzag interweaving to a net. This is illustrated with the aid of FIG. 2, wherein the weft threads are given reference number 4.

[0025] FIG. 3 shows only sections from the entire plastic net; the regions lying therebetween have fringes and weft threads. For the production respectively of a fringe 1, an individual guide needle 5 is provided, through which the at least two threads from which the fringe 1 is formed are guided, which cooperates with an individual guide needle 6, through which a weft thread is guided.

[0026] The needles 5, 6 are arranged around the machine plane M, wherein the machine plane M is the region in which the needles 5, 6 interact in order to produce a raschel net. Preferably, the width b of a plastic net embodied according to the invention for the cultivation and for the harvest of onions lies in range between 105 and 300 centimetres.