The method of producing the layer insulation board and the layer board as presented in the patent application No P-332457 are known. This method consists in the production of a primary band that contains a binding agent, this primary band is pressed together within one or more longitudinally stretching zones containing the added pressing- facilitating agent. Next, this primary band is folded, creating a secondary band, afterwards, this secondary band is hardened and potentially, pressed together.

Also the insulation material, the method of producing the insulation material and the facility to produce the insulation material as presented in the patent application No P- 332156 are known. This material is constructed of cells and of a filler that is located in the cells. The filler is composed of individual fibres connected with the binding agent in form of foam. The method of producing the insulation material is characterized by the preparation of the mixture of individual fibres and of the binding agent in form of foam and next, this mixture is introduced into the open cells of the basic material through a nozzle.

The method of producing multi-layer plate building elements according to the inventions is characterized by the covering the plate element with the gluing agent and next, by its covering with fibre.

Natural fibres are used to cover the element with fibre.

Artificial fibres are used to cover the element with fibre.

Fibres, 1 mm through 200mm long, are used to cover the element with fibre.

A board of a high stiffness such as: fibreboard, gypsum/cardboard board, gypsum/unwoven fabric cloth board or chipboard make the plate element.

A plate of a low stiffness such as: plate of mineral wool or foamed polystyrene board make the plate element.

The coverings with fibre follow gravitationally, The coverings with fibres follow mechanically.

The coverings with fibres follow by fluidization.

A variety of the method of producing the multi-layer plate building elements is characterized by covering the plate element with fibre at the stage of binding the material out of which the plate is produced.

Natural fibres are used to cover the element with fibre.

Artificial fibres are used to cover the element with fibre.

Fibres, 1 mm through 200mm long, are used to cover the element with fibre.

The covering with fibre follows gravitationally.

The covering with fibre follows by fluidization.

A variety of the method of producing the multi-layer plate building elements is characterized by covering the plate element with the gluing agent and next, by its covering with fibre or the warm-up granulated product.

The multi-layer plate building element is characterized by having one side covered with fibre.

The fibre is 1 mm to 200mm long.

The fibre is seated on the gluing layer, 0. 01mm to 2mm thick.

The fibre is a natural one.

The fibre is an artificial one.

The fibre has a differentiated degree of dispersion.

The fibre has a differentiated degree of shaping.

A plate of a high stiffness such as: fibreboard, gypsum/cardboard board, gypsum/unwoven fabric cloth board or chipboard makes the plate element.

A plate of a low stiffness such as: a plate out of mineral wool or foamed polystyrene board make the plate element The method of producing the multi-layer plate building materials according to the invention is characterized by an extraordinary simplicity and at the same time, it allows to get a building element of special insulation properties and special noise suppression properties. Besides, the so obtained element can be used as a tool to shape the external surface of the walls, especially of its surface quality. This was obtained as a result of applying the fibres on the plate element covered with a gluing layer. The element thus created contains a layer of fibres of very good insulation properties and of a special structure which, used to shape the surface of the walls, allows to obtain a special surface quality over their surface. In order to produce an element, both artificial and natural fibres of various lenghts and of a various degree of dispersion can be used. Depending on the type of the agents used various plate elements are obtained, allowing for the differentiated application.

The method of producing multi-layer plate builiding elements in agreement with the invention and the multi-layer plate building element thus produced are closer explained in the execution example and in the figure in which fig. 1 presents the building element in cross section and fig. 2 presents its variety, also in cross section.

As presented in figs. 1 and 2, the multi-layer plate building element is created from the plate 1 which has on its surface the applied gluing layer 2. The layer of fibre 3 is applied on the gluing layer 2.

The variety of the multi-layer plate building element as presented in fig. 2 has the plate 1 which, at the stage of its production, in particular at the stage of cooling down, has the applied layer of fibre 3.

The methods of producing multi-layer plate building elements are presented in the execution examples.

Example I The plate building example in form of a gypsum/cardboard plate is covered with a gluing agent through the spraying of the gluing factor layer over the translocating plate.

Afterwards, it is covered with fibre, whereby for the covering with fibre natural fibres, 10mm to 20 mmm long, are used. The covering with fibre follows mechanically using a storage bin with a rotary feeder, whereby the fibres feeding device maintains a stable position while the plate translocates longitudinally.

Example II A plate building element in form of a plate of a low stiffness such as a plate out of mineral wood is covered with a gluing factor through the spraying of the gluing factor layer over the translating plate. Next, it is covered with fibre, whereby for the covering with fibre artificial fibres, 155m to 30mm long, are used. The covering with fibre follows by fluidization using a storage bin and an air feeder with a nozzle, the fibres feeding device being translocated transversely with respect to the board, whereas the plates translocates longitudinally.

Example III A plate building element in form of a chipboard, which is produced through the gluing together using high pressure and temperature, is covered with fibre at the last stage of its production, whereby natural fibres are used to cover it with fibre, 10mm to 20mm long. The covering with fibre follows mechanically using a storage bin with a rotary feeder, whereby the feeding device maintains a stable postion, whereas the plate translocates longitudinally.

Example IV A plate building element in form of a gypsum/cardboard plate is covered with a gluing factor through the spraying of the gluing factor layer over the translocating plate.

Afterwards, it is covered with fibre mixed with the granulated product of foamed polystyrene, whereby for the covering with fibre natural fibres, 10mm to 20mm long, are used. The covering with fibre or the granulated product of foamed polystyrene follows mechanically using a storage bin with a rotary feeder, whereby the fibres feeding device maintains a stable position, whereas the plates translocates longitudinally.