HU184553B - Method for producing heat-insulating building board - Google Patents

Abstract

1. A process of making a heat-insulating plate comprising at least one plate (1) which is made of heat-insulating material and enclosed by a material (2) which imparts the necessary strength, characterized in that the strength-imparting material (2) is introduced in a pulpy state into a mould, which stands on edge and which is partly filled by said material, and the plate (1) is subsequently immersed, preferably centrally, into the partly filled mould and is held in position so that the plate (1) is enclosed by the material (2) in that the latter is displaced by the plate (1).

Description

The present invention relates to a process for the production of heat insulating building hemp, which consists of at least one sheet of heat insulating material enclosed by a material providing sufficient strength.

Due to the increasing number of energy-efficient building methods and the retrofitting of residential buildings with insulating layers, the need for various types of insulation materials, such as insulating panels or insulating materials, has increased considerably. In this context, it is clearly noticeable that demand is increasingly increasing towards time-resistant and refractory, with volumetric and high-strength elements and panels.

Many effective insulating materials exist in the form of elements and sheets, but those that meet the requirements of time and fire resistance, while at the same time having high bulk and bending strength, are virtually unknown. For this reason, it is not possible to use the same type of material for different purposes, such as loft construction, flat paneling, facade or partition wall insulation or wall construction. The requirements are so different that the properties of one and the same substance cannot meet this.

Austrian Patent No. AT-PS 322 165 discloses a process for making sheets, boards or moldings comprising a heat insulating core surrounded by a hydraulic binder such as gypsum. For example, the process is for continuous production of 0.6 m wide and 7 cm thick tapes that are finished! will be cut into boards or sheets of desired length so that the ends are not covered with binder. The procedure is divided into several parts. First, the core is in the form of a conveyor belt and side rubber bands. The lateral rubber bands then expand while plaster mortar is applied to the side opening such that the core is raised by the buoyancy force until it is in contact with a press roller which prevents further elevation. Meanwhile, gypsum mortar is added to cover the core at half height. After the gypsum mortar has solidified, the pressure roller is removed after the amount of gypsum mortar that reaches the edge of the side rubber bands is completely covered; the second layer then solidifies. Since the second gypsum layer can only be poured after the first gypsum layer has solidified, there is no tight connection at the interface between the two layers, so that the mechanical strength is reduced relative to a homogeneous bond.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a process for the production of heat-insulating building blocks in one piece which, by combining or combining materials, fulfills all of these conditions, has a high bending strength and can be manufactured with little partial stroke.

For the production of building boards, the task has been accomplished by pouring the strength material into a mortar-like form by partially filling the form, then immersing the heat-insulating material in a partially filled form, preferably in the middle, of the material providing strength. by squeezing the fully enclosed sheet in position. In the drawing it is

Figure 1 is a longitudinal cross-sectional view of a building board made by the process of the invention, a

Figure 2 is a cross-sectional view of another possible embodiment, perpendicular to the longitudinal direction.

insulating board made from organic products such as. consisting of expanded polystyrene, polyurethane, foam rubber or inorganic materials such as expanded perlite (especially refractory), spoons, expanded material (ceramic), glass wool, rock wool, in the form of prefabricated elements or combinations of these materials.

For the use in bulk of materials such as perlite, foam slag, expanded material, expanded polystyrene or other light weight additives of less than 1.0, these materials contain inorganic binder, mini-Portland element, melted tile cement, aluminous cement, hydrophobic cement, mészhidrátta! or into sheets prepared with other binders such as sulphite lye, cellulose products or water-soluble plastics. Apart from the thermal insulation, these boards only need to be manipulated,

As a load-bearing, constant volume, durable and refractory material 2 of the base sheet produced according to the invention, primary inorganic, hydraulically or carbonate-solidifying materials, such as Portland cement, hydrocarbon cement, white cement, hydraulic lime, lime hydrate or plastically modified forms thereof, smaller fine granular antifreeze and refractory additives. An essential feature of this raw material mixed with water into cement paste or mortar is that the crude mixture may contain fine air pores to enhance thermal insulation, and fibers to provide volume stability and flexural strength. Fibers are loose and / or continuous fibers of fibrous, fiberglass or mineral fibers which, according to the process of the invention, are admixed to the binder mass or later added to the mass which is already in a solid form.

In the example of Figure 1, a trapezoidal recess is provided at the bottom of the spring used to make the building board, so that this edge of the building board has trapezoidal feathers.

For example, a suitable groove on the top edge of the building board may be formed by providing a cover, prior to the material 2 being loaded, to form a trapezoidal recess. This allows, for example, for masonry insulation to significantly reduce the number of fastening screws and to prevent damage to the visible surface from mounting.

It is likewise possible to form a semicircular toil of a building board made according to the example of Fig. 2, while the complementary semicircular groove, for example, is already pre-formed in the insulating board itself. For better bonding of the building boards, a fibrous tape may be simultaneously molded into the mold according to the example of Figure 2. This method of fixing can also be replaced by a single loop, plate or hook attached to the building board. In an embodiment having such an additional reinforcement system, the space requirement of the panel is taken into account by a suitable space gap not shown in the drawing. It is also contemplated that the visible surface of the sheets is provided with a coloring and / or imprinting layer.

In the following, the manufacturing process of the thermal insulating panels according to the invention will be described in more detail, based on non-binding embodiments.

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Example 1

Portian cement cement paste, 0.1% blowing agent and 2.0% fiber by volume in a forced mixer at high speed after mixing into 5 high porosity masses The mold is filled to such an extent that only a 5 cm thick sheet of polystyrene saturate them to their color. The extremely lightweight polystyrene sheet is prevented from being raised by its attachment at its front and longitudinal edges, and its lateral slip is prevented by means of guides.

The sheet remains in the mold until immersed, which ensures that the punch and groove are trained. The sheet produced in this way, e.g. 100x60x8 cm, after solidification has a bulk density of · 5,300 kg / m ³ and an average breaking strength of 80 kg at a support distance of 50 cm.

Example 2 20

For the preparation of the masterbatch, 9% by weight foamed polystyrene balls of size 0.2-3.0 mm and 91% by weight white cement were mixed with water and 0.3% foaming agent in a forced mixer. This mass is poured into a standing mold 25 into which a dense woven fiberglass mesh is subsequently inserted. The fiberglass mesh is pressed against the mold wall by the pressure of the paste and acts externally on the polystyrene particles as a filter. In this way, an outer layer of fiberglass reinforced cement pulp and a layer of cement-bonded polystyrene are formed. The sheet remains in shape until solidified. The insulating board produced in this way has a size of 150x60x8 cm, a bulk density of 350 kg / m ³ and an average breaking strength of 50 kg at a support distance of 100 kg. '35

Example 3 ranging 40 Expanded perlite Expanded 0.0-3.0 mm 5.0% by weight clay (500 g / l) Cement content Water / cement value 3.0-10.0 mm 95.0% by weight 350 kg / m ³ 0.7 45

0.3% blowing agent relative to cement

The mixing is performed in a forced mixer; mixing order: cement pulp, perlite, then the expanded clay is added to the mass with a short mixing time. Λ the final mixture is poured into a stationary mold into which plastic mesh of equivalent effect is placed as described in Example 2. The plastic fabric protrudes 10 cm across the entire length of the mold edge above the flange, resulting in 3 securing straps. The size of the sheet made in this way is 120x60x8 cm, its bulk weight is 600 kg / lm ³ and its average breaking strength is 50 kg with a support distance of 50 cm.

In the above examples, it is also possible to first insulate the insulating board and then to pour a solid mortar-like material. In this case, there is a risk of air bubble inclusions which reduce the strength of the sheet. In the process according to the invention, this danger does not exist because a strong bond is formed between the two materials, which provides high strength.

The advantage of the building board made by the process according to the invention over the conventional embodiments is that it is particularly versatile due to its water and fire resistance and its high flexural strength. For example, for basement wall and facade lining, partitioning or slab concreting as a (lost) shuttering board, attic and partitioning; optionally board substitute material barns; in buildings where the risk of fire is extremely high. For each of these applications, each Kiwiil form has a resulting surface, such as a fine plaster layer, which is also suitable as a ε sheet surface under noble plaster.

Claims (1)

A patent claim A method of manufacturing a heat insulating building board comprising at least one sheet of heat insulating material enclosed by a material of sufficient strength, wherein the material of strength (2) is molded into a mortar-like form by filling the form only partially, (I) immersed in a partially filled tooth, preferably in the middle, of the strength-securing material (2) and securing the sheet (1) completely enclosed by this displacement with the displacement.