PROCEDURE FOR THE PRODUCTION OF PREFABRICATED SMOOTH ONE PLINTH SKIRTING CORNER PIECES.

The invention concerns a procedure for the production of prefabricated smooth (jointless) plinth skirting corner pieces. The plinth skirting corner pieces can thereby rounded or angularly, i.e. with small bending radius, as well as interior or Auß enecken conceived its.

For the jointless training of the bottom wall transition in buildings often L-shaped one, thermoplastic or rubber-like profiles, is used which are mostly manufactured by extruding.

To more simply moving of these plinth skirting profiles within the range of interior and Auß enecken become angepa&szlig partially prefabricated; Te of university profile corner pieces assigned.

The plinth skirting corner pieces become for example by Spritzgieß EN manufactured. These plinth skirting corner pieces inserted, with extruded profiles together, among other things the disadvantage, daß it, under which different manufacturing processes, different optical and physical characteristics exhibit. Further extruded plinth skirtings and sprayingpoured plinth skirting corner pieces point into that äuß eren dimensions (height) partially high tolerances up, which during the transfer not to become balanced to be able.

Apart from the cases, in those the unifarbene plinth skirting bewuß t as organization means is used, it as ästethisch disturbing strip between wall surface and floor mat is usually regarded.

From the DE-C2-35 22,420 already a procedure for the production of prefabricated smooth plinth skirting corner pieces is well-known, whereby as raw material L-shaped ones extruded plinth skirtings are used. This procedure is not suitable however for the production of dessinierter plinth skirting corner pieces. Further only an angle bracket is rounded off with these plinth skirting corner pieces, while the transition from the ground exhibits a small break radius to the wall range.

From the GB-A 721.086 is a procedure for the production of interior and Auß enecken from linoleum admits, with which a wooden strip is connected as form stabilization with that suitably bent piece of linoleum. This procedure is not suitable for the production of smooth plinth skirting corner pieces.

From the firm folder “MIPOLAN Verlegeanleitung”, company Hüls Troisdorf AG, pages 22 to 28, publishes July 1988, is already a procedure for the production of direction-free dessinierter plinth skirting corners well-known, with e.g. by thermal Verschweiß EN in the corner area a cut of a floor mat is converted to the corner. Production of rounded off corners, i.e. with bending radii from 5 to 100 mm, is not possible in this procedure. Likewise the corner exhibits at least one joint (seam).

Task of the available invention is it to place a procedure for the production from prefabricated smooth plinth skirting corner pieces to the order also the production in each direction more rounded off and direction-free dessinierter plinth skirting corner pieces made possible.

The invention solves this task by a procedure with the characteristics of the requirement 1, preferentially in connection with or several of the characteristics of the Unteransprüche.

Erfindungsgemäß as raw material for the production of the plinth skirting corner pieces an essentially even, plattenförmiger cut from thermoplastic plastic is used. For this a section of a thermoplastic Fu&szlig is preferred; ground or wall covering uses, in particular the same surface, that for the adjacent Fuß floor space is used. The cut points thereby a surface - which in supervision visible surface - up, those at least the 1,2fachen, prefers that 2 - until 5fachen corresponds to the surface of the finished plinth skirting corner piece.

The cut is warmed up up to the thermoplastic ductility. So far commercial soft PVC Fuß floor mats as raw material to be used, the temperature amounts to approx. 150 to 190, prefers 170 to 180° C. the heating up effected preferentially in a warming cupboard o. such, whereby this prefers during a longer period of 5 to 15 min. is made. The difference between the surface temperature and the temperature inside the cut should be as small as possible thereby.

The warmed up cut becomes anschließ end according to the desired rounded off or sharp edged form three-dimensional deformed. For this the cut is put preferentially loosely on the lower part of a two-piece form (Unterstempel, Oberstempel) and pressed by pressing the upper form on the lower form. The deformation effected prefers in the kind, daß the plattenförmige cut as gleichmä&szlig as possible; industrial union is deformed distributed over the surface, in order to keep thickness tolerances, in particular within the edge range of the later plinth skirting corner piece, small. The cut should be fixed with the Zufahren of the two-piece form in the edge range of the cut not firmly, but be freely adjustable, in order to keep aspect ratio as small in this range as possible. Thus, daß the used plattenförmige cut one at least 1,2fache, prefers 2 - until 5fache exhibits surface of the finished plinth skirting corner piece, becomes a formation of wrinkles with the Schließ EN of the form prevents and the necessary aspect ratio and/or upsettings of the even raw material on one as gro&szlig as possible; e surface distributes, so daß a distortion of the Dessinierung is minimized.

After cooling of the deformed cut the form is removed and the cut of the form is inferred. Anschließ end the plinth skirting corner piece along the desired edges one cuts, in particular with help of an appropriate template.

After a preferential execution erfindungsgemäß EN of procedure is direction-free dessiniert the essentially even, plattenförmige cut from thermoplastic plastic. In particular prefers the same surface used as raw material, which is used for the adjacent ground and/or wall covering.

Preferred the deformation of the plattenförmigen cut is made in such a manner to the three-dimensional form of this plinth skirting corner piece, daß the deformation in each place of the cut in each direction parallel to the surface for instance in the same Maß taken place.

The circumcised plinth skirting corner piece exhibits prefers edges of same thickness, whereby the thickness tolerance prefers, lies smaller 30%, in particular smaller 10%. A small thickness tolerance of the edges of the plinth skirting corner piece is of substantial importance for a perfect Verschweiß ung with adjacent ground and/or wall coverings.

Those erfindungsgemäß EN of plinth skirting corner pieces exhibit also after the deformation a Dessinierung, which essentially the Dessinierung of the assigned plattenförmigen cut corresponds. In particular with direction-free dessiniertem raw material also the finished plinth skirting corner piece is dessiniert direction-free.

The invention is more near described in the following on the basis the designs: Show thereby

Fig. 1 -

a perspective opinion of a plinth skirting outer corner,

Fig. 2 -

a perspective opinion of a plinth skirting interior corner,

Fig. 3 -

a finished moved ground wall Anschluß with interior and Auß enecke.

Gemäß the represented remark example from a square cut of a commercial homogeneous, direction-free dessinierten PVC floor mat (MIPOLAM^R 500 Color), manufactured in the procedure according to the EP-A1-0 226,946, with an edge length with 450 mm (surface approx. 20 DM ²) and a thickness with 2 mm one proceeds. The cut is heated in the Umluftofen in 8 min. and/or on both sides by means of infrared radiant heat on a temperature from approx. 170 to 180° C and anschließ end inserted into the form (Unterstempel).

The upper form (Oberstempel) becomes anschließ end driven from above on the loosely presented cut, whereby the material of the cut is deformed accordingly. The upper and the lower form are in such a way trained, da&szlig thereby; when complete bringing of the upper and the lower form together about equivalent gro&szlig in each case; it part of the cut toward the upper and the lower form to be moved and/or, daß each of the two forms in subranges raised and jumping back in other subranges trained is.

Thereby one becomes particularly gleichmäß ige distribution of the necessary aspect ratio of the material on the entire surface reaches.

After cooling of the cut this is removed and cut from the form, whereby about 3/4 of the surface as blend drop. Cutting can in arbitrary way, e.g. with a stamping machine, a two-piece Schneidschablone o. such, to be implemented.

In Fig. 1 is an accordingly manufactured Auß enecke 10 represented, whereby the length of the ground thighs amounts to 1, 2 in each case 170 mm and those the ground/wall thigh 3, 5 in each case 170 mm. The radius 9 the upper horizontal Wandanschluß edge amounts to 50 mm, likewise the radius of the thighs 3 and 5 within the range of the ground/wall fillet. All thighs 1, 2, 3, 4 and 5 stand rectangular α , β , γ to each other.

In Fig. an accordingly manufactured interior corner 11 is represented 2, whereby the length of the ground/wall thighs 6, 7 in each case 170 mm, their radii as well as. the radius of the upper horizontal Abschluß edge ever 50 mm amounted to. The angles α “, β ” and γ 'in each case 90° amounts to.

In Fig. 3 is a complete ground wall Abschluß with one erfindungsgemäß EN 90°-Innenecke 11 (left) and a 90°-Auß enecke 10 (right) represented. In the Anschluß to those erfindungsgemäß EN of plinth skirting corner pieces 10, 11 was used out even floor mat a curved plinth skirting with an edge length by 170 mm and a bending radius of 50 mm. For the transfer of the plinth skirtings first a commercial fillet profile with 50 mm radius into the ground/wall transitions is nailed or stuck, whereby the corner areas are left blank. The corners can do either with appropriate shaped parts unterfüttert to become, if necessary can these however also after adaptation of the plinth skirting corner pieces 10, 11 be behind-foamed.

The connection of the plinth skirting corner pieces 10, 11 with the adjacent plinth skirtings as well as the floor mat takes place in actually well-known way via thermal or Flüssigverschweiß ung.

With that erfindungsgemäß EN procedure is for the first time the production of smooth plinth skirting corner pieces with direction-free Dessinierung and in each direction of rounded form possible, whereby both homogeneous and heterogeneous surfaces can be used.

That erfindungsgemäß e procedure is limited thereby not to angle brackets of 90°, but is applicable also to arbitrary angles as well as arbitrary bending radii.