IT201800003210A1 - BUILDING PANEL STRUCTURE IN SINTERED EXPANDED POLYSTYRENE WITH PREPARATION FOR COVERING - Google Patents

Description

DESCRIPTION

accompanying the patent application for industrial invention having as object e

TITLE

BUILDING PANEL STRUCTURE

IN SINTERED EXPANDED POLYSTYRENE

WITH PREPARATION FOR COVERING

SUMMARY

Structure of building panel in sintered expanded polystyrene with predisposition to the covering, comprising straight-axis profiled metal beams (5) and constant section shaped like a "C" or "double T" with two wings (6) with parallel external faces connected orthognally through a rib or core (8) for perforated connection (9), embedded parallel and equivalled in the sintered mass (4), with external faces of the wings (6) on the surface or immediately below the surface that can be drilled for insertion of screws and the like or in any case engageable by means of restraint to provide a firm support for any slab, sheet, panel or coating.

DETAILED DESCRIPTION

Stay of the technique

Sintered expanded polystyrene (in the abbreviation EPS, from expanded polystyrene), also commonly called expanded polystyrene, is a thermoplastic resin derived from benzene, with characteristics of lightness, isothermal, impermeability, dimensional stability, rigidity and impact resistance, self-extinguishing, non-toxicity.

As for lightness, EPS has a low volumetric mass or density [from 10 (ten) to 100 (one hundred) kg / m <3>].

As for isothermal, this is one of the main characteristics of EPS and is favored by the fact that it is made up of air up to 98%. This air is locked up in cells so small as to prevent convective motions. Therefore, the transmission of heat can only occur by conduction, very low in the air, and by radiation, which is rapidly reduced as the screens made up of the cell walls multiply. The internal air remaining in equilibrium with the external one, stabilizes the thermal conductivity over time.

As for impermeability to water and, conversely, permeability to water vapor, EPS is not a hygroscopic material, therefore EPS products do not exhibit phenomena of imbibition by capillarity. Moreover, the right value of vapor permeability that EPS presents allows the transpiration of the manufactured articles made with it, which are therefore not attacked by molds and the like.

As for dimensional stability, EPS is isotropic, since the products produced with it are not subjected to tension, with consequent deformation and breakage, whatever the time of their use; in fact there is a physical-mechanical state of stable equilibrium with homogeneity of characteristics reproduced in every point of the product. This characteristic is mainly influenced by the type of expansion that the cells of the material have, in fact the cellular structures that expand in the whole of a space of a few millimeters in diameter are very regular, with almost equal microspheres.

As for stiffness and behavior to mechanical stresses, the relationship between stresses and deformations is linear up to 3% of deformation, beyond this limit there is a permanent deformation of the cellular structure without breaking.

As for self-extinguishing, EPS has flame retardant characteristics. The artifacts tested for reaction to fire show resistance values exceeded only by those of incombustible materials.

Non-toxic and biological tolerance, EPS is not toxic, it does not constitute nourishment for any living being, including microorganisms; EPS does not rot, does not mold and is completely recyclable, biologically neutral, neutral to odors and neutral in contact with the skin.

As for production technology, expanded polystyrene, to be used, must undergo a series of transformations directly related to its destination.

At the beginning the material is presented in the form of very fine pearls, from one to three millimeters in diameter, with the addition of a blowing agent; the production of semi-finished products and articles in polystyrene - expanded polystyrene takes place in three main stages.

Pre-expansion: the expandable polystyrene beads are pre-expanded, generally by means of steam at a temperature above 90 degrees centigrade, in the so-called pre-expander. In the pre-expansion treated with steam, the raw material softens and the expanding agent vaporizes, causing the pearls to swell, following the vaporization of the expanding agent the pearls amplify up to sixty times their initial volume. The duration and intensity of this first operation determine the density of the finished product. In this process, a closed cell structure is formed inside the expanded polystyrene beads, which is essential for subsequent use as a thermal insulator. The degree of expansion, which essentially depends on the duration of the heat treatment in the pre-expander, determines the apparent volumetric mass of the expanded polystyrene articles and therefore of all their physical characteristics.

Maturation of the pre-foam: in this phase the polystyrene beads are stationed for a certain time in ventilated silos. With cooling, the expanding agent and water vapor residues condense in the individual cells. The depression that is formed in this way is canceled by the air that spreads inside the cells; in this way the pre-expanded polystyrene or expanded polystyrene beads reach the necessary stability for the subsequent phases.

Modeling of the artifact: the pre-expanded and stabilized polystyrene - polysitrol beads can therefore be transformed into artifacts or semi-finished products in various ways; what is relevant in the present context is the molding into single sheets in special automatic numerically controlled molds provided with micro holes for the steam, filled with polystyrene or expanded polystyrene beads and subjected again to the injection of saturated steam; reaching temperatures of 110 - 120 degrees centigrade, so that the pearls swell further and weld together due to their internal pressure, that is, they sinter. The higher the density of the EPS, the more pressure is exerted in the block to favor better sintering. There is the advantage of obtaining the desired sound directly, without further mechanical processing.

These characteristics of sintered expanded polystyrene, aka EPS, aka expanded polystyrene, have found effective application for the construction of building products, in particular, for what is relevant here, in the production of panels to form internal and external infill walls in buildings, for this purpose then covered with suitable coatings for the inside or the outside, usually for the inside sheets of plasterboard and the like and for the outside sheets of fiber cement or fibrosilicates and the like.

Aims of the invention

The main purpose of the present invention is, in this framework, to provide a building panel structure from sintered expanded polystyrene (EPS - expanded polystyrene) which allows the rapid and safe assembly to it of internal covering sheets (such as by way of example plasterboard and / or fireproof sheets) and external ones (such as waterproofing sheets and / or fireproof sheets) during installation,

Another object of the present invention is to achieve the previous object through a polyvalent structure for any type of coating.

Yet another object of the present invention is to achieve the preceding objects through a building panel structure made of sintered expanded polystyrene (EPS - expanded polystyrene) which can be produced by means of the sintering molds of panel plates according to the known technique, without the need of modifying interventions of any kind.

A further object of the present invention is to achieve the preceding objects by means of a simple and functional structure, safe in use and of relatively economic cost in consideration of the actual results achieved thereby.

Abstract summary of the solution concept

These and other purposes are all achieved with the structure of a building panel in sintered expanded polystyrene with predisposition to the coating, according to the present invention as defined by the claims formulated at the end of this descriptive text, comprising profiled metal beams (5) with rectilinear axis and section constant shaped like a "C" or "double T" with two wings (6) with parallel external faces connected orthognally through a rib or core (8) of perforated connection (9), parallel embedded in the sintered mass (4), with faces of the wings (6) on the surface or immediately below the perforated surface for insertion of screws and the like or in any case engageable by means of retaining means to constitute a firm support for any slab, sheet, panel or covering coat.

Identification of the attached drawings

Further characteristics and advantages of the building panel structure in sintered expanded polystyrene with predisposition to the coating according to the present invention, will become more evident from the following detailed description of a preferred but not exclusive embodiment thereof, represented only by way of non-limiting example in the two tables of drawings attached to this descriptive text, in which:

Figures 1 and 3 show in reduced perspective view two respective embodiments of the building panel structure in sintered expanded polystyrene with predisposition to the coating according to the present invention;

Figure 2 illustrates a detail in perspective section.

Static description of the preferred example of embodiment With reference to these figures and in particular to figure 1, the numeral 1 indicates as a whole an example of an embodiment of the building panel structure in sintered expanded polystyrene with predisposition to the coating according to the present invention, configured as a bead with male 2 and female 3 joints on two opposite sides, for mutual in-line junction of a plurality of equals and constitution of a matchboard, of the plank type in the illustrated embodiment example

With 4 the high density sintered expanded polymeric mass [from 30 (thirty) to 90 (ninety) kg / m <3>] constituting the panel 1 is indicated.

In the mass 4 are embedded parallel and equidistant some profiled metal strips 5, shaped like a "C" in the example of implementation illustrated.

The strips or metal beams profiled with a straight axis and constant section shaped like a "C" have two wings 6 with parallel external faces, with specularly inverted cantilevered portions 7, connected orthogonally through a rib 8 or connecting core 8, provided with a series of perforations 9 in a consecutive line, with a triangular shape in the illustrated embodiment example.

The surfaces of the parallel external faces of the two wings 6 are coplanar to the surfaces of the major faces of panel 1 for the functions that are specified below.

Dynamic description of the preferred example of embodiment Having thus completed the static description of a preferred example of embodiment of the building panel structure in sintered expanded polystyrene with predisposition to the coating according to the present invention, as follows in fact the dynamic one, i.e. the its operation.

The panel according to the invention can be made by molding according to the known art as a composite complex, by aggregating the strips 5 to the sintered expanded polymeric mass 4, always preferably at high density [from 30 (thirty) to 90 (ninety) kg / rn <3>], by drowning within it the metal rod-shaped elements 5 for relative positioning, duly positioned, within the polystyrene expansion mold; pouring into the mold of the granules or incoherent beads obtained from the polymerization of styrene, of particle size and volume appropriate to obtain a high density finished product [from 30 (thirty) to 90 (ninety) kg / m <3>]; expansion and sintering or unification of the incoherent polystyrene through contact with water vapor at a temperature above ninety degrees centigrade injected into the mold and consequent imprisonment of the strips in the monolithic mass thus obtained, to achieve a solid geometry of panel 1 and in any case prefabricated construction element 1, dictated by the mold, of polystyrene or sintered expanded polystyrene 4 accompanied by the profiled strips 5 equidistant therein incorporated in the mass 4.

The slatted panels 1 thus obtained can be mutually assembled in consecutively in any plurality, by means of the relative peri inar structure with male 2 and female 3 joints, to constitute internal dividing walls and internal and external cladding in any type of building, of any kind. of supporting structure.

Advantageously, the slatted panels 1 can be held on the sides to the floor and / or ceiling and / or to the heads by means of guides / channels for anchoring and positioning, in plastic or metal material, fixed to the abutment surfaces.

Once the panels 1 have been placed in place, the strips 5 are equally spaced, preferably with center distances equal to those which usually already accompany the pre-drilling lines for the insertion of the fastening means, usually screw, of the covering panels in plasterboard and the like.

In any case, whether or not the cladding palms are already equipped with holes, these claddings can easily and quickly be applied to the battened panels, using self-tapping screws for metal and automatic screwdrivers including those specific for plasterboard.

Similarly, sheets of coating material can be applied inside and outside; usually for the inside sheets of plasterboard or fiber cement for interiors and the like and for the outside sheets of fiber cement for the outside or fibrosilicates and similar covering layers ..

Implementation alternatives

It is obvious that in alternative embodiments, still falling within the concept of solution underlying the example of embodiment illustrated above and claimed below, the structure of building palm in sintered expanded polystyrene with predisposition to the reinforced coating according to the present invention can also be implemented in a different way and realized, with technical and mechanical equivalents, or additional measures, still falling within the same illustrated above and the concept of solution claimed below.

In particular:

the metal strips or trusses profiled with a straight axis with constant section as well as conformed to "C" or "U", can be "double T", or in any case shaped in section with two wings with parallel external faces connected through a rib or perforated connecting core.

The shape of the rib notches can be conceived in any other suitable way in order to allow the insertion, filling and clamping of the polystyroll in constant sintering within the mold.

The metal strips or trusses can have ribs, projections and stiffening shapes on the wings and / or on the median portion.

By means of the metal strips or beams according to the present invention, any type and kind of coats and covering panels of any material and with any finishing and / or decorative and / or fireproof and / or water-repellent function can be applied to the battened panels and / or insulating c / o anything else without exception whatsoever.

Advantages of the invention

As it appears evident from the above detailed description of preferred but not exclusive embodiments, the building panel structure in sintered expanded polystyrene with predisposition to the coating according to the present invention offers the advantages corresponding to the intended purposes and others:

in fact, it integrates a simple, effective, modular and polyvalent solution concept suitable for equipping the panels through effective and robust means for fixing and joining of any type and kind with coats and cladding panels of any material and with any finishing function and / o decorative and / or fireproof and / or insulating and / or water repellent and / or whatever else without exception of any kind in any location and distribution;

this since the constitution of the building panels in expanded plastic material, congruently with the relative production process, with simple interventions that are inserted without any contraindications whatsoever in the cycle of this; as in any moment of their installation at home or subsequent to this.

LEGEND OF THE NUMBERS

1) panel structure as a whole

2) male joint

3) female joint

4) sintered expanded polymeric mass

5) profiled metal strips

6) wings of the profiled metal strips

7) cantilevered portions specularly inverted of the wings of the profiled metal strips 8) rib or connecting core of the profiled metal strips

9) triangular-shaped in-line perforations of the rib or connecting core of the profiled metal strips

Claims (3)

CLAIMS 1) Structure of building panel in sintered expanded polystyrene with predisposition to cladding, characterized by the fact of comprising profiled metal beams (5) with a straight axis and constant section with two wings (6) with parallel external faces connected through a rib or core (8 ) of perforated connection (9), embedded parallel equivalled in the sintered mass (4), with external faces of the wings (6) on the surface or immediately below the surface that can be drilled for insertion of screws and the like or in any case can be engaged by means of retaining means to constitute a support for slab, sheet, panel or cladding coat. 2) Building panel structure as per the first claim, characterized in that said straight-axis profiled metal beams (5) have a constant section shaped like a “C” or “double T”. 3) Building panel structure as per the first and second claims and each of them, characterized in that it comprises: building panel consisting of a mass (4) of sintered expanded polystyrene configured as a bead with male (2) and female (3) joints on two opposite sides; a parallel equidistant plurality embedded in the mass 4 of profiled metal strips (5) or profiled metal beams (5) with straight axis and constant section shaped like a "C" with two wings (6) with parallel external faces connected through a rib (8) o connecting core (8) provided with a series of perforations (9), 4) Building panel structure as per the preceding claims and each of them, characterized in that the surfaces of the parallel external faces of the two wings (6) are coplanar to the surfaces of the major faces of the panel (1). 5) Building panel structure as per the preceding claims and each of them, characterized by the fact that the provided connecting rib (8) or core (8) is orthogonal to said wings (6), 6) Building panel structure as per the preceding claims and each of them, characterized in that the connecting rib (8) or core (8) is provided with a series of adjacent and in any case shaped in-line perforations (9). 7) Building panel structure as per the preceding claims and each of them, characterized by the fact that the two parallel external wings (6) have cantilevered portions specularly inverted (7). 8) Building panel structure as per the preceding claims and each of them, characterized in that the sintered expanded polymeric mass (4) has density from 30 (thirty) to 90 (ninety) kg / m <3>. 9) Bracket-strip structure (1) as per the preceding claims and each of them, characterized by the fact that any type and kind of coats and covering panels of any material are applied to said strips (1) by means of fastening means and with any finishing and / or decorative and / or fireproof and / or water-repellent and / or insulating function and / or anything else without exception of any kind. 10) Bracket-strip structure (1) as per the preceding claims and each of them, characterized in that said strips (1) have ribs, projections and stiffening profiles on the ribs and / or on the median portion.