FI80367B - Cell unit for training plants - Google Patents

Description

1 80367

The present invention relates to a seedling breeding cell consisting of parallel rows of containers, in which successive rows have a common partition wall with an indestructible middle layer and a rotting surface layer on both sides thereof, and successive partitions are joined to form adjacent rows of each container row. Such honeycombs, in which the partitions of the rows of containers detach from each other after growth, have been described e.g. in Finnish Patent Publication Nos. 69386 and 71650. In these previously known honeycombs, the wall structure consists of three laminated layers. Rot resistant layer of plastic material, and is laminated on both sides of decomposing paper layer.

15 Cell waste left in the forest may eventually end up in pulp cooking with the wood. If the cell residues contain plastic, this is particularly harmful when it enters the pulp.

The growth cell according to the invention is characterized in that the non-rotting middle layer is metal. No plastic is used in the honeycomb according to the invention. The honeycomb also becomes cheaper than using plastic, because even a thin metal film is sufficient for the purpose. The film can be obtained, for example, by evaporating metal on paper.

The invention and its details will be described in more detail below with reference to the accompanying drawings, in which Figure 1 shows a perspective view of the entire honeycomb and Figure 2 shows a connection point between two adjacent vessels seen from above.

The honeycomb 1 consists of hexagonal containers 2. The honeycomb 1 is produced in a manner known per se by gluing the desired laminated sheets 3 from one of the suitable points 4. When opened, the sheets differ from the non-glued parts from each other to form a honeycomb.

35 The partitions 3 of the honeycomb 1 are made of three layers of laminate. The middle layer 5 of the laminate is a metal foil which is e.g. aluminum, tin or the like. On each side of the middle layer 5 there is a thin surface layer 6, 2 80367 which rots during growth and which is preferably paper.

The joint of successive partitions is formed by gluing vertical seams to the edges 5 of the vessels of the joint 4 with a non-rotting and water-insoluble adhesive. The gluing is performed in such a way that the seams extend from one middle layer 5 to another, but in such a way that the glue does not adhere to the middle layer itself.

The surface layers 6 rot during the growth, after which the seedling clumps can be separated from each other by removing the middle layers 5 remaining between the seedlings.

The middle layer 5 and the adhesive seams 4 prevent the growth of the root system from one lump to another during the growth.

If necessary, root growth can be controlled by growth inhibitors in the surface layers 6 of the partitions or at their joints 15. At the joints, abundant dosing can also be used in or between the adhesive joints 4 without disadvantage.

Claims (2)

3,80367 Claim