SI23905A - PROCEDURE FOR PRODUCTION OF INSULATING MATERIAL - Google Patents

Abstract

A process for producing an improved insulating material, which consists of several independent, interconnected and synchronized machines and devices. These are a coarse grinding mill (2), a pre-automatic conveyor (3) of coarsely ground mass to a fine grinding mill (4), a pre-automatic conveyor (5) of finely ground material to a mixer (6) where additives (8) are dosed via a dosing device (9), a silo (7), which is connected to a relief chamber (10) for air extraction and a packaging device (ll) for granulate. The additives (8) are added only at the end of the technological process, namely to the mixer (6). The granulometric composition of the granulate is prescribed. The maximum grain size is 8 millimeters, a minimum of 74% of the granulate is in the size range from 4 to 8 millimeters.

Description

PROCEDURE FOR PRODUCING INSULATION MATERIAL

The subject of the invention

It is an object of the invention to process and recycle useless waste soft polyurethane foam and textile residues. In the overall composition of the insulating material, recyclable materials account for 93% of the product's mass and 7% of the product's weight are additives. The process according to the invention provides foam granules, which are a material of exceptional sound and thermal insulation.

The invention belongs to classes E 04 B 1/88 and E 04 C 2/16 of the international patent classification.

A technical problem

The technical problem that the present invention successfully solves is. how, due to the production of large quantities of polyurethane and textile residues in various industries, to maximize the processing and further use of residual residues without excess additives and with a process where local heating is not achieved and the effectiveness of the additives is achieved and which prevents excessively dusting of the particles being recovered. Therefore, according to the present invention and the related claims, we have invented a process for obtaining an improved insulation material from the residues of said materials, which is intended for thermal and acoustic insulation in bulk by filling cavities in construction structures, namely for insulating dry prefabricated walls, ceilings and floors. Material granulate is embedded in the cavities by blowing.

Known state

There are many known solutions for the production of insulating material. The closest known solution is according to patent SI 21620 A. According to this document, polyurethane and textile residues are first coarsely ground, at this stage the necessary additives and additives are prevented to prevent rotting, burning, against odors and then transporting the coarse mixture by ventilation to a fine-grinding mill, to which a sufficient amount of various additives intended for the volume and solidification of the mixture are dosed at the first treatment level of the mixture, if necessary, and at the second appropriate level, the mixture is ground to a fine granulate. In this grinding and kneading process, the individual granulate forms are compacted to bind binders, additives and additives. The mixture thus obtained is locally heated to 100 ° C. which is, in fact, not an advantage, but a disadvantage, because it destroys the purpose of the additives that melt when heated. In addition to the aforementioned disadvantage, the solution is also burdensome for the worker due to excessive particle dusting.

In addition to this solution, we have found, when examining by patent bases, that various technical solutions for recycling lines for other residues are emerging. The most typical solutions are the following patents:

IT BL92A000019, which provides a solution for the process of manufacturing rigid sheets of scrap paper, pulp and similar materials,

SI 20267 A also provides a solution for the use of cellulosic waste materials in connection with cement,

AT 1318/85 and AT 2896/85 deals with glass wool-filled formwork walls, EP 08429667 Λ2 deals with composite material in the manufacture of glass and mineral wool fibers.

A common feature of all of these solutions is the use of scraps of paper, pulp and similar materials for insulation purposes. The manufacturing process itself has nothing to do with the solution of the present invention.

The solution to a technical problem

According to the invention, the problem is solved by a technological process where coarse and fine grinding is first carried out, and only additives are added at the end of the process to prevent local heating and melting of the lc-s. The process according to the invention reduces the content of additives by 24% according to known solutions. The proportion of additives in the final product is 7%, of which 4% is BoraxNa2 (B4Oj) (OH) 4 * 8 (H: O) and 3% Boric acid - HaBCh. A mill that cuts polyurethane foam residues and textile residues rather than cephra, and the market and with the proper granulometric composition, prevent the over-roasting of particles. The granulometric composition is as follows:

About mm - 2mm: 7% mm - 4 mm: 19% 4 mm - 8 mm: 74%> 8 mm: 0%

The problem solved by the process for producing improved insulating material from soft polyurethane foam residues and textile residues is a line for the production of insulating material consisting of several separate, interconnected and synchronized machines and devices, which is shown descriptively and in pictures.

The invention is illustrated by the drawings, of which Fig. 1 shows a flowchart of a line for the production of improved insulating material Fig. 2 Connection of ground textile fibers or other fibers and a polyurethane foam granule with a binder and additives

INTERPRETATION OF THE IMAGE:

Figure 1 shows a flowchart for the production of an improved insulation material consisting of several separate, interconnected and synchronized machines and devices. These are coarse grinder 2, coil conveyor 3 coarse ground to fine grinder 4, coil conveyor 5 finely ground to mixer 6, where additives are dispensed via dispenser 9. Silo 7, which is connected to the discharge chamber 10 air outlet and packing device 11 for granulate.

Coarse grinder 2, used for coarse grinding of feedstock 1, which is cut into smaller flakes. The material thus cut and ground is transported by means of a pneumatic conveyor 3 to a fine grinder 4. The grain size according to the granulometric composition of the granulate in bulk, in the size of 1 to 8 millimeters. The fine grinder 4 with a sieve of 8 mm ensures repeatability of the prescribed granulometric composition. The pneumatic conveyor 5 transports such a finely ground mass to a mixer 6 in which additives 8 are added through the metering device 9 and the whole goes to the silo 7. The excess air is discharged through the discharge chamber 10. The granulate is then packed via the package of the device 11 into the prescribed packaging.

Figure 2 shows the granulate, which is a mixture of ground parts of textile fibers, polyurethane foam and additives 8. The grain size is in accordance with the granulometric composition of the granulate in bulk, from 1 to 8 millimeters. The additives 8 are arranged by mixing in the mixer 6.

Example 1:

Use of granulate as bulk insulating material for filling into hollow spaces, partitions. The granulate is blown with a special machine, which is not the subject of the invention, through the pipe system into a single partition of the partition of the partition wall, so that it is filled with a suitable density of insulation.

Claims (1)

Patent claims A process for the production of granules of improved bulk insulation material, useful especially for thermal and acoustic insulation and sound absorption of various rooms, as well as for use in the furniture industry, is characterized by the use of raw materials such as residues of soft polyurethane foam and textile residues which is first ground into smaller particles and transported such a coarse mixture by a pneumatic conveyor to a fine grinding mill, where the grain size is from 1 to 8 millimeters, and then by a pneumatic conveyor such fine ground mass is transported to a mixer in which a dosing device is conveyed. the additives are added, and the whole mixture goes into the silo, and the excess air is discharged through the discharge chamber. The process according to claim 1, characterized in that the silo granulate is packed through the packaging device in the prescribed packaging. The process according to claim 1, characterized in that the additives are only added at the end of the technological process to the blender. The method according to claim 1, characterized in that the granulometric composition of the granulate is prescribed and the maximum grain size is 8 millimeters and at least 74% of the granulate is in the size from 4 to 8 millimeters, which is provided by a fine grinding process containing a sieve of 8 millimeters .