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1. WO1990012494 - PROCEDURE AND MEANS FOR ATTACHING FILM USED IN COVERED CULTIVATION

Note: Text based on automatic Optical Character Recognition processes. Please use the PDF version for legal matters

[ EN ]
Claims

1. A procedure for attaching a film used in covered cultivation,
wherein a film is spread on a surface being cultivated, for instance a field, characterized in that when a film (10) is spread, the film
(10) is sewn with stitchings (11) to the surface (12) being cultivated.

2. A procedure according to claim 1, characterized in that in the 10 procedure the film (10) is stitched with stitchings (11) so that
stitchings (11) are provided at least on both longitudinal edges of the film (10).

3. A procedure according to claim 1 or 2 , characterized in that the •| depth (c) of a seam (13) of a stitching (11) in the procedure is
selected according to the ground so that the depth (c) of the seam
(13) of the stitching (11) is preferably 100 to 200 mm.

4. A procedure according to any one of claims 1 to 3, characterized 20 i-n that at an end of the seam (13) of the stitching (11) is made an anchoring extrusion (14).

5. A procedure according to any one of claims 1 to 4, characterized in that the width (a) of the film (10) used in the procedure is
25 selected according to the plant to be cultivated so that the width
(a) of the film (10) is preferably 0.5 to 8 m.

6. A procedure according to any one of claims 1 to 5 , characterized in that in the procedure the space (b) between the stitchings (11)

30 positioned on each film (10) is 100 to 500 mm in the breadth direction of the film (10).

7. A procedure according to any one of claims 1 to 6 , characterized in that in the procedure most advantageously are used films (10)

35 which include areas (30) and/or flaps (32) penetrating light, provided by optical and/or mechanical methods, and that the films (10) are
made from a mainly light non-penetrating (31) material which is 1 plastic, paper or equivalent, preferably material breaking down
biologically and/or under the action of light.

8. A procedure according to any one of claims 1 to 7, characterized in that in the procedure the films (10) are spread on the surface
(12) being cultivated so that nearly the entire cultivated area is under the films (10) .

9. A means for attaching a film (10) used in covered cultivation to -|0 a surface (12) being cultivated, e.g. field, characterized in that the means comprises operation and guide means (25) , and a roll (20) for spreading film (10) on the surface (12) being cultivated, a member (22) for conveying sewing thread (11) to the surface (12) being
cultivated, and members (21) for conveying the sewing thread to the -J point to be stitched.

10. A means according according to claim 9, characterized in that, the member (22) of the means is a one-step or a two-step beater.

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