MXPA99003754A - Method and device for framing a decorative element - Google Patents

Abstract

The present invention concerns a method and device for framing a decorative element (1), for example a carpet, a fabric or a foil. The method consists in forming in a mould (2) designed for pressing free or jet shaping, at least on edge portions of the decorative element (1), a frame (4) characterized in that it has an edge (7) extending substantially at a right angle relative to the main orientation of the decorative element, as well as a plurality of fingers (9) in grip with the decorative element, either thereon or thereunder (1). The frame edge (7) and the fingers (9) can be both manufactured in one piece and united to the decorative element in one step.

Description

METHOD AND DEVICE FOR ORLAR OH DECORATIVE MATERIAL. DESCRIPTION OF THE INVENTION: The invention relates in a first aspect to a method for bordering a decorative material in particular a folder or mat, a cloth or a sheet in which a border piece is formed in a die mold for pressing by back and / or rear injection, at least in parts of an edge of this decorative material, the border comprises a ring that extends essentially at right angles to the main direction of the extension and along the edge of this decorative material and that It comprises a multiplicity of fingers that fit on the decorative material, producing the ring and the fingers and its connection to the decorative material in a single operation. According to a second aspect, the invention relates to a die for producing a ring and fingers of a one-piece plastic border of decorative materials, the orifice is capable of being produced by means of a back pressure method or a method combined back pressure / back injection and in particular can be integrally formed in a decorative layer or connected to the latter. Decorative materials such as mats or overlay folders or car liners are conventionally edged. This edging in general is not REF .: 30067 detriment of the desired flexibility of the folder edge (adaptation to prevailing plane inequality). However, such edgings are expensive to produce and also tend to stain. The life time of such an overlay folder is usually limited precisely by that border that has been damaged. In view of this problem, the overlay folders for automobiles are produced in, for example, with and a first carrier of a wear-resistant plastic material by means of an injection molding technique. A decorative material, this is a mat cut in size to stick to that carrier material in another operation.

Thus the cut tolerances on the mat or the folder can be compensated or colored, but also to make a reinforced available border for the edge of the folder, the carrier material is preferably produced with a subcut. This subcutting on the one hand, solves the problem of cutting tolerances, but on the other hand, a new problem arises, complication, that is expensive injection molds with corresponding sliding systems are needed to produce a clean subcut with a hanging that it is suitable to cover the tolerances of a plurality of millimeters. Only with the help of such sliding systems is it possible to remove the carrier material already molded by the mold without any damage. In addition, in practice, the operation of gluing the decorative material on the carrier material represents an additional increase in the price of the final product. - In many fields of technology, structural parts made of plastic are used, which have to satisfy not only functional requirements, but also aesthetic demands. An example of this, among many, is the manufacture of automobiles, where structural parts of plastic are used for interior coatings, rear window blades, cab covers, boards and the like. To give these an aesthetically attractive design, a decorative layer is often attached as a separate surface layer to a visible side of the plastic structural part. For reasons of easy availability or simplified reuse, the decorative material should preferably be produced from the same material as the plastic structural part of the other part. Such monomaterials can then be recycled substantially more cost effectively than composite materials, which must first be separated. The so-called back pressure method was developed to produce plastic structural parts of this kind. This method is described in the publication "Kunststoffe im Automobilbau VDI Verlag GmbH Dusseldorf 1994" (Synthetic materials in Automobile Manufacturing "Editorial VDI GmbH.) This provides for the attachment of a decorative layer to a top of the die, an open die mold, in such a way that it covers the surface of the top of the die, if necessary, all the area. Subsequently, a molten and therefore flowable plastic mass is injected or inserted into the die mold which continues to remain open. Subsequently the mold is closed, with the result that the plastic mass is evenly distributed in the mold under the closing pressure, and finally in the case of decorative materials with pores, such as, for example, textile materials, it partially penetrates into the mold. Decorative material The plastic mass then solidifies and forms an intimate bond with the decorative layer. This back pressure method can also be combined with the back injection method. Such a back pressure and / or rear back injection method can be used in order to produce a carrier layer that is suitable for a decorative material. As a result of the production in one piece of this carrier layer, which could be integrally formed on one edge, the cut tolerances in the mat would be compensated and the production simplified by avoiding the operation of gluing on the mat. However, the serious problem arises, that it is necessary to place the edge of the decorative material in the cavity of a die mold for the back pressure and / or the injection from behind. As a result of positive displacement pressure of the molten plastic material being introduced, the edge of the decorative material can, for example, be displaced or lifted in an unpredictable manner. Por-1 © therefore it is not possible to ensure a clean formation of a border that reliably covers the edge of the decorative material. In addition, the edge can barely reach the desired flexibility in this way. Methods and devices known from the prior art have means for reinforcing the combination of the decorative material / the carrier layer, but do not propose any means for designing a more flexible edge of a decorative material. US 4, 491, 556 discloses a method and device for producing a carpet base, with an injection molding unit comprising two molds. A multiplicity of pouring pits is arranged in a first mold having a depression to receive a mat running parallel to the dividing plane. These pits correspond to arranged intervals in that part of a second mold that corresponds to the depression of the carpet receptacle. At the same time at least one of the molds has a cavity for molding the edges of a base lying down, and the method includes fitting a folder in that receiving depression and injecting a thermoplastic resin into the space between the mat and the pouring pits. , in order to provide an inferior base that is simultaneously connected to the mat. This patent relates mainly to coating underneath the folder material with a plastic base (see Figures 6 and 7). The DE 37 12 882 relates to a molding of lining, in particular to cover the floor of a car, the molding has a bordering carpet layer and an additional layer. The border is formed by a body of solid profiled plastic. This is integrally formed directly on the edges of the mat layer and the additional layer. In this region of the edge of the carpet layer the stacking of the latter is embedded within the plastic body. CA 960 827 relates to a method for producing a utensil (in particular a perforated veil for covering a frying pan where the meat is fried) comprising a metal grate and a cast plastic ring. Here the plastic ring consists of a thermoplastic material and surrounds the edge of the grill. The method includes the following steps; production of a metal grill that has at least one brand hole; provision of a two-part casting mold comprising a cavity, by means of which an outer ring can be cast, which is formed in such a way that the metal grate is bordered and supported, provision of at least one pin in a mold, the pin in each case adjusts a marking hole in the grate, provision of a depression in the other mold, the pin adjusts in the depression when the two molds are joined together, orientation of the metal grate with all the marking holes and the pins disposed there, closing the mold and execution of the injection molding operation. In order to improve the stability, the connection of the metal grill / ring must be reinforced. GB 1 271 860 relates to the production of filter elements consisting of a filter membrane, the outer edge of which is embedded in a sealing element. For the best retention of the membrane during injection molding, the two mold halves during the injection molding have ears that are always located opposite each other in the other half of the mold, so that a membrane placed between the halves of the mold The mold is fixedly stopped by means of pairs of ears, even when the injection is carried out at a high pressure. A retaining ring is cast into the ears on the inside, This retaining ring is connected via some souls to the outer ring that acts as a sealing element. The object of the present invention is to provide borders of decorative materials, in particular folders or rugs, textiles or sheets, with a border that is formed integrally by back pressure and / or rear injection of a flowable mass and that precisely and or reinforce at least parts of the edge of these decorative materials and give improved flexibility, compared to the prior art, and that during its production the use of sliders is not necessary. According to a first aspect of the invention, this object is achieved because a method of the type described in the introduction is proposed, for the border of decorative material, in particular a carpet, a cloth or a sheet, in which a bordered on a die mold for back pressure and / or rear injection, at least parts of an edge of this decorative material, a method characterized by the following steps: insertion of decorative material into a cavity of the die mold, the cavity formed by the halves of the die; introduction of a flowable mass in the cavity of the die mold; closing die mold; distribution of the flowable mass in the cavity; forming a part of a hoop, which extends essentially at right angles to the main direction of the extension of the decorative material and along the edge of that decorative material, and of a multiplicity of fingers that engage on the decorative material; connection of the hoop and fingers to the decorative material; expulsion of the ornamental material bordered after at least a partial solidification of the mass. A plastic melt is preferred as a flowable or pasty mass when this method is carried out. Furthermore, with a device of the type described - in the introduction, it is proposed to achieve the intended object, according to the invention, because that device for the border of decorative material, in particular a carpet or folder, a fabric or sheet, comprises a die mold for back pressure and / or rear injection, whereby a rim can be formed at least at portions of the edge of that decorative material, the device being characterized in that the die mold has recesses that are designed for die mold and consequently, for the flow around a dough and the border edge of the decorative material, and this die mold has retention webs, by which the recesses can be separated from each other, and by means of which the decorative material can be placed in the proper position, in order to prevent deformations of the edge, these retention webs reach as far as the recess for a frame extending essentially at right angles to the main direction of the extension and along the edge of that decorative material and that can be produced in a piece with a multiplicity of fingers engaging on and / or under the decorative material and can be connected to the decorative material in the same operation. Special embodiments of the method according to the invention and of the device according to the invention are found in the dependent claims which also have production means or molding parts, such as depressions, souls and the like, for the integral formation of souls, lattices , support plates, projections, orifice strips and the like and for the edge thereof or different decorative materials or to produce an insert on one side or both sides of a ring, which if appropriate narrows on one side or on the other side. both sides. The method described is basically suitable for all plastics and other flowable or pasty masses that can solidify and can be processed by means of the back pressure or back injection method. These materials can be used as a surface layer or a decorative layer that makes a firm connection with a mass of that type or with a plastic during the prison operation from behind. Textile materials such as rugs or woven fabrics, as well as plastic sheets, can be mentioned, simply by way of example, in this aspect. However, combinations of masses or plastics and materials of the decorative layer that are exclusively of the same kind are preferred, so that the decorative border material, after the intended use, can be crumbled with little effort and reused as monomaterial The fingers integrally formed according to the invention on the ring are obtained by means of corresponding recesses in one or both halves of the die mold. The retention webs of the die mold extend between those recesses as far as the rim, that is up to and beyond the edge of the inserted decorative materials and rest directly against the decorative material. This ensures during the positive displacement pressing or during the back injection of the flowable mass or molten plastic material, that it may flow around the decorative material, to form a ring or frame and fingers, but that the decorative material will be stopped in a manner reliable on its edge and will be placed in the die mold cavity. Deformations such as, for example, discomfort or elevation of the decorative material on the level of the main direction of the extension, are thus avoided. The use of sliders may be dispensed with as a result of the inventive design of the die mold. The dimensions of the fingers are preferably determined so that they are longer than they are wide. The distances between the fingers are selected simultaneously, so that depending on the stability or deformability of the decorative material, this decorative material can not reach the upper level of the fingers or the ring, by bending or deformation, either during the rear injection and / or the back pressure on the finished product. Such a ring is formed integrally in a piece on the decorative material and has a longitudinal structure highly subdivided, resulting in high edge flexibility. In preferred variants of the method, the fingers may be provided on the upper side and the underside of the ring or frame. In addition, if the decorative material has sufficient stability (if, for example, it is a wear-resistant mat) the height of the frame can be reduced to the thickness of the mat; the fingers formed integrally then fit on and under the mat. Optionally in this case, the upper fingers are designed in such a way that the stacking of the mat, which is stretched again after the back pressure and / or the rear injection does not reach, or only just reaches, and does not project up, of the upper level of the fingers or the frame. In addition, these fingers can be fused or transformed into ribs formed integrally on the ring or the ribs formed integrally on the outer side of the frame to continue on the fingers. The advantage of this is that the rim can be designed to be even thinner, and yet the edge of the decorative material is reinforced and edged satisfactorily. In preferred embodiments of the invention, it can be provided that the two mold halves are capable of closing and opening in a straight movement. This makes it possible to significantly reduce the manufacturing time for the edge of a decorative material.

The invention is explained in more detail below with reference to exemplary embodiments schematically illustrated in the figures, wherein Figure 1 shows cut-out illustrations of die molds to produce the border edge of a decorative material; Figure 2 illustrations in edge cut of the edge of a decorative material; Figure 3 shows illustrations in edge cut of the edge of a decorative material having a ring or frame of a reduced thickness; Figure 4 shows selected top views of borders of the edge of a decorative material according to Figures 2 and 3; Figure 5 shows illustrations in edge cut of the edge of a decorative material, such as a connection to another decorative material or an insert; and Figure 6 shows illustrations in section and top views of borders of the edge of a decorative material according to another embodiment: The first embodiment illustrated in Figure 1, of a die mold 2 for a combination of back pressure / injection back is an integral part of a machine, not shown in its details, which is designed to produce borders 4 of a decorative material 1 by means of the source flow method. The die is open to a certain degree and is designed as a unit that closes vertically, it has a top part of the die 2 'which is located opposite a lower part of the die 2"in such a way that its dividing plane runs essentially horizontal. , the die comprises at least one heating duct, a heating / cooling device, a casting funnel cap, an ejection tool and a control, none of which is illustrated.The upper part of the die 2 'is designed in its lower side in such a way that it has a negative contour of a rim 4 of a decorative material 1 or the edges 3 of the latter, the rim that is to be produced by means of the die.Recesses for a frame 7 and fingers 9 can be seen, recesses for the fingers 9 are separated from each other by retaining webs 23. The retaining or holding webs 23 extend as far as this is the frame or ring to be formed. r of die 2 'runs essentially horizontally. In the edge regions, the upper part of the die 2 'has horizontal support regions 20 and a peripheral immersion chamfer 21. In the Figure the in the horizontal regions the upper part of the die 2 'is provided with a retaining means that is not illustrated. This preferably consists of a plurality of vacuum nozzles that are evenly distributed and keep the decorative material inserted 1 in a correct position. . Formed on the upper side of the lower part of the die 2"is the lower part of the die mold 2 that runs essentially horizontally In the edge regions, - there are also support regions 20 and a chamfer 22 located opposite the chamfer peripheral immersion 21. When resting on the lower part of the die 2", the upper die part 2 'forms with the latter a cavity 6 having a contour corresponding to the rim 4 to be produced for a decorative material 1. The designed lines of the inlet - like mouthpiece 19, vertically oriented, open in - this cavity 6. The mass of fluidized plastic 5, maintained at a predetermined temperature, Dasa through the heating duct, does not illustrated, having a controllable temperature, to the needle closure nozzles 19 and the cavity 6. The second embodiment illustrated in Figure Ib of a die mold 2 for back pressure is an integral part of a machine, which also is not illustrated in its details, designed for the production of borders 4 of a decorative material 1 by means of the extrusion casting method. In contrast to Figure 1, here the die mold is designed in such a way that it is possible by means of this, to produce rims 4 comprising a thinner ring 7 and both upper and lower fingers 9 which in each case are separated one from the other. another for retention souls 23.

In a third embodiment, illustrated in FIG. 1 of the method according to the invention, the molten plastic material is injected into a completely closed die mold 9 (rear injection) and for this reason, immersion chamfers on the die may be dispensed with. . In addition, the cavity formed by the two die halves can assume any position desired in relation to the horizontal. As in Figure Ib, here the die mold 2 is designed in such a way that it is possible by means of this, to produce rims 4 comprising a thinner ring 7 and both upper and lower fingers 9 which in each case are separated one from the another by support webs 23. Other flowable or pasty masses 5, if appropriately consisting of a plurality of components, can likewise be injected and consolidated at least partially or partially solidified. Figure 2 illustrates preferred embodiments of trimmings of decorative material. Figure 2a shows a section perpendicular to the main direction of extension of the decorative material, through the border edge 3 of the latter. In this case the section runs through a finger 9 which engages on the decorative material l. This finger is formed integrally on a ring 7 which is essentially perpendicular to the main direction of the extension of the decorative material l. The stack of decorative material 1 has been straightened again after removal of the mold, but the finger 9 is nevertheless projected onto level 10 of the decorative material. Simultaneously with the formation of the ring 7 and the fingers 9, a support plate 14 is integrally formed and connected to the decorative material 1, below the latter, In Figure 2b the section runs parallel to that of Figure 2a being the difference that the section is pulled only through the ring 7 of the same modality of a rim 4, not through a finger 9, a finger 9 is illustrated in the view. Between the ring 7 and the decorative material 1, where the ring 7 is integrally formed, a compensating zone 8 filled with plastic material can be seen in the region where the fingers 9 fit over it and are absorbed by that compensating zone. Between the many fingers there are niches that cover the compensation area in the same way as blind joints, but they run essentially at right angles to the edge of the decorative material. The variants illustrated in Figures 2c to 2f of the edge 4 according to the invention for a decorative material i, differ from those discussed above by the recess of holes 15 in the support plate 14 and in the design of a ring 7, on which the fingers 9 are coupled and which, for example, only reaches level 10 of the decorative material 1 (Fig. 2d); in the additional formation of fingers 9 that couple under a thin support plate 14 (Fig. 2e) and a core 11 that is integrally formed on the ring 7 and which is connected by means of bars 12 forming a supporting lattice 13 for decorative material 1 (Fig 2f) .y. dock under that decorative material. Furthermore, the protrusions 16 can be integrally formed in the core 11, the lattice 13 or the support plate 14, preferably on its underside, the protuberances prevent a decorative border material, used as a covering mat or standing mat to escape of its place. Figure 3 also illustrates preferred embodiments of borders of decorative material. FIG. 3 shows a section perpendicular to the main direction of the extension of the decorative material 1, through the border edge 3 of the latter. The section runs in this case, through the fingers 9, which engage above and below the decorative material 1, respectively. These fingers are formed integrally on the ring 7, (represented by interrupted lines) which is essentially perpendicular to the main direction of extension of the decorative material 1 and has exactly the same height as the decorative material. The stacking of decorative material has been stretched again after removal from the mold, but the 9th finger however is projected above level 10 of the decorative material. Simultaneously with the formation of the ring 7 and the fingers 9, the ribs 17 are formed integrally on the outer side of the ring and are connected to the fingers 9. By means of these ribs formed integrally, the increased section of the flange is reduced. 4, without damaging the protective effect for the edge 3 of the decorative material 1. In Figure 3b the difference consists in that the section is only drawn or pulled through the ring 7 of the same modality of a border 4, no through the fingers 9. Two fingers 9 and a rib or rib 17 are illustrated in the view. Between the ring 7 and the decorative material 1, where the ring 7 is integrally formed, a compensation zone 8 filled with plastic material can be seen. The tolerances of the decorative material in the region where the fingers attach on it, are absorbed by that compensation zone. Among the many fingers there are niches that cover this compensation area in the same way as blind joints. The embodiment illustrated in Figures 3a and 3b comprises an extremely flexible border 4 of the edge 3 of the decorative material l. Decorative materials trimmed in this manner are particularly suitable for lining or covering surfaces that have many level inequalities. On the other hand, a hard-wearing, more rigid decorative material, such as a mat, can be trimmed reliably, and yet in a space-saving manner, without a supporting lattice or supporting plate to be integrally formed. The variants illustrated in Figures 3c to 3f, of the rim 4 according to the invention for a decorative material 1 differ from those discussed above by the design of a core 11 and a supporting lattice 13 connecting -between in regions when less of that soul that surrounds the decorative material and that is formed integrally on the decorative material 1 or the ring 7 (Fig 3c); in the design of a support plate 14, also integrally formed on the ring 7, with or without holes 15 (Fig 3d) supporting plate that can connect at least regions of the core 11 to each other; in the additional design of the strips 18 that additionally stabilize the support plate 14 (Fig 3e) and in a ring 7 that reaches the same height as the fingers 9 (Fig 3f) or even projects above them. The fingers 9 can also be integrally formed in an alternating sequence on the upper side and the lower side of the hoop, so that they can alternatively couple below and above the decorative material 1 (Figures 3e, f). The fingers 9 can be arranged on the underside of the ring 7, so that they fit under the decorative material 1 or the support plate 14. Furthermore, the protuberances 16 can be integrally formed on the support lattice 13 or the support plate 14 , preferably on its underside, the protrusions prevent a decorative border material that is used as a folder or carpet from sliding around. Figure 4 illustrates various embodiments of the rim 4 according to the invention for decorative material 1, some of which have already been described, the individual top views of the details of a straight rim are designated with the corresponding figures. Of course, the invention also includes edgings that are produced so that they are angled or curved. Like the ring 7, and the fingers 9, the other elements of the edge 4, for example the core 11, the bars 12 of the supporting lattice 13 or the support plate 14, can also be produced in one piece, and connected to the decorative material , in an operation. Any desired operations of the features illustrated in the figures and described are also included in the scope of the invention. As illustrated by way of example in Figure 4, the width or length of the fingers may vary both in terms of the different borders and within the same border. A continuous or stepped reduction or increase of the width or length of the fingers can be provided in such cases. If the fingers are designed wider (see Fig. 4; 2a), incisions can be made. These preferably run perpendicular to the main direction of extension of the decorative material and increase the flexibility of the hoop 7 or the edge. The fingers 9 can also be designed rounded, at least in parts, for example at their ends or transitions to the ring. Figure 5 illustrates other preferred embodiments of trimmed decorative material. Fig 5a shows a double border 4 'of two decorative materials l' and l "that do not completely collide with each other, because they are separated by a ring 7 'running perpendicular to the main direction of extension of the two decorative materials, identical materials or even different can be arranged on both sides of the ring 7 ', the section, here, runs through a double finger 9', which engages on the decorative material 1". This double finger is formed integrally on the ring 7 '. The stacking of the decorative material l 'has been stretched again after its removal from the mold, but the finger 9' nevertheless projects onto the level 10 of the decorative material. As illustrated, the decorative material 1"can also be designed without any stacking c and have the finger 9" engaging on it. Simultaneously with the formation of ring 7 • and fingers 9 '. 9"a support plate 14 is formed integrally underneath the decorative materials and is connected to these In Figure 5b, the section runs parallel to that of Figure 5a, the difference being that the section is pulled only through the hoop 7 'of the same modality of a border 4 *, not through a finger 9' .9". A finger 9 ', "is illustrated in the view: Between the ring 7' and each of the decorative materials l * and l" on which the ring 7 'is formed integrally, a compensation zone 8', 8 can be seen. "filled with plastic material Tolerances of the decorative material in the region where the fingers 9 ', 9"coupling are absorbed by these compensation zones, between the many fingers there are niches that cover that compensation area in the same way as blind joints, but running essentially at right angles to the edge of the decorative material. Figures 5c to 5f, of the rim 4 »according to the invention for decorative materials 1 ', l" differ from those discussed above in the design of fingers 9', 9"integrally formed alternately on rim 7 ', (Fig. 5c); being either on one side or on both sides in ring 7 ', with the result that a flexible connection occurs between decorative materials 1' and 1"and insert l1" (Fig. 5d); in an insert l '"which is integrally formed on one side of the ring 7 * this insert comprises the same material as the ring 7 • and its surface is capable of being structured in the form of a relief, for example in the form of an identification or logo (Fig. 5e) and in the selection of an extremely stable decorative material 1", the edge 3" from which it can collide by aligning itself on the ring 71, without fingers forming (Fig 5f). at the edge in the main direction of extension of a decorative material or inside it, so that the insert is surrounded totally or partially by the decorative material. Figure 6 illustrates other embodiments of the rim 4 according to the invention for the decorative material. A characteristic feature of this mode is the design of very thin fingers 9 which engage underneath and / or the decorative material on one side or both sides and at least some of which are connected, preferably in the region of their tips, to the tips of the adjacent fingers by means of a transverse web 2. Thus Figure 6a shows a cross section through it and Figure 6d a top view of a connection of two decorative materials such as sheet 1, such as leather, cloth and the like, which have approximately the same thickness. The edges 3 of the decorative materials 1 are separated from each other by a ring 7 and are completely surrounded. The ring 7 can in each case be lower than the fingers 9 (shown only partially, see the regions designated by an asterisk between the dotted lines in Figure 6d) thus bringing a further improvement to the flexibility of the border 4 of the decorative materials l. The recesses formed integrally between the ring 7, the fingers 9 and the transverse web 24 can be opened to the surface of the decorative material in such a way that they do not completely reach below or above the decorative material 1. Figure 6b shows a section in and Figure 6e a top view of an insert 26 consisting of a plastic mass 5 and directly joining a ring 7. The ring 7 is connected to the decorative material through fingers 9. The decorative material, which can be example being a mat, a textile fabric, leather or a plastic sheet, it is supported from below with a support plate 14. While the support plate 14 connects the fingers on the underside, the individual fingers are connected on the upper side by means of a transverse web 24. The insert 26 can, as shown, be somewhat offset on its underside or it can be provided at the same level as the support plate 14. The edge 3 of the decorati vo hits the rim 7 and is completely bordered by the latter. The recesses formed integrally between the frame or ring 7, the fingers 9 and the transverse web 24 can be open to the surface of the decorative material l (as shown) or partially filled in such a way that they do not fully reach below or above. to the decorative material 1. Other embodiments according to the invention comprise all the features described or illustrated in the figures and also all possible combinations of these. In order to produce a 4,4 'border of a decorative material 1, according to a first embodiment, a decorative material 1 is first placed, already preformed according to the desired contour in the cavity 6. In this case, for example , vacuum nozzles can stop the decorative material 1 on top of die 2 '. The decorative layer has dimensions such that it already has the desired size. The -2.6-top of die 2 'moves subsequently to the bottom of die 2"by means of a vertical movement, until the two dice halves are placed one next to the other, as illustrated in Figure la. The needle closure nozzles 19 of the back pressure die of the die mold 2 are subsequently opened until a predetermined amount of molten fluidized material 5 has flowed into the cavity 6. The other needle closure nozzles (not shown) also they open towards cavity 6, one opens after the other. In the illustration of Figure 1, these steps of the method have already been performed. The plastic mass 5 is introduced at a relatively low pressure, so that it remains lying in the lower part of the die 2"in the region of the needle closing nozzles, without already coming into contact with the decorative material 1. The mold of die 2 is then closed completely by means of another vertical movement of the upper part of the die 2 '.; pressing through the decorative material 1, on the plastic mass 5, with the result that this is positively displaced and evenly distributed in the cavity 6. As soon as during this positive displacement movement the immersion chamfer 21 of the upper part 2 ', is joined with the opposite chamfer 22 of the lower part of tool 2", the die mold 2 is closed. The dimensions of the immersion chamfer 21 are coordinated with those of the chamfer 22 in such a way that the mold of die 2 remains open, for ventilation, until, as a result of the positive displacement pressure, the plastic mass is located in the region of the immersion chamfer 21, but has not yet emerged, after a time of rest or cooling for the purpose of at least one partial crystallization or partial solidification is achieved, the mold halves are separated, the die 2 is opened again and the decorative border material 1 is ejected sa by ejectors not illustrated, which are arranged in the lower part of die 2". In order to prevent further undesirable shrinkage, with respect to the decorative material, of the plastic material connected to the latter by the back pressure and / or the back injection, the die mold 2 and the inserted decorative material 1 can be preheated by means of heating, not illustrated, and therefore pre-expand correspondingly. In this description of an example of the production of a border of a piece 4, 4 'of a decorative material 1 in the die 2, the die parts designed as the upper die part 21 and the lower part 2"can be interchanged, so that the lower part of the die 2"receives the decorative material before the back pressure or the rear injection, and for example the ejectors can be arranged in the upper part of the die 2 '. According to a second preferred embodiment of the invention (see FIG. 1b) the die mold 2 is made without needle closing nozzles 19. The plastic mass or molten synthetic material 5 can then be introduced into the cavity 6 between the parts of the invention. given 21 and 2", for example, by means of a wide slot nozzle, according to the extrusion layer method, the die 2 mold is subsequently completely closed by means of more vertical movement of the die top part. 2 * This part 2 • presses on the decorative material l, on the plastic mass 5, with the result that it moves positively and is evenly distributed in the cavity 6. As soon as during this positive displacement movement the chamfer of immersion 21 of the upper part 2 ', is joined to the opposite chamfer 22 of the lower part of tool 2", the die mold 2 is closed. The dimensions of the immersion chamfer 21 are coordinated with here the bevel 22 in such a manner that the die mold 2 remains open for ventilation until, as a result of the positive displacement pressure, the plastic mass is located in the region of the immersion bevel 21, but has not yet been emerged In a third preferred embodiment (see Fig. 1) of the method according to the invention, the die mold 2 is completely closed, before the molten synthetic material 5, is injected into the cavity 6. For this reason, the formation of an immersion chamfer 21 and the chamfer 22 located opposite to the first can not be made in the die mold. Back pressure or back injection according to source flow methods or extrusion layers or any combination of these processes, is preferably considered as the procedures that can be used for the production of a part of the trimmings. 4, 4 In accordance with the invention for decorative material 1. The illustrated borders, of course, are simply examples, and may be varied, as desired, within the scope of the invention, and applied to other production methods. The materials that are considered are all plastics suitable for a combined method of back pressure / back injection, this is thermoplastics or permanently elastic polymers, such as for example polypropylene, ABS copolymers (acrylonitrile / butadiene / styrene copolymers) or thermoplastic rubbers etc. These plastics can also be reinforced, for example with fibers or mats. At the same time, decorative materials of different colors and / or plastics of different texture are also frequently used. In contrast to the materials and method described, other flowable or pasty masses 5 can also be used to produce the trimmings according to the invention. The following practical examples will be mentioned, without being a conclusive illustration: JO Adjustment of lining elements in transport means (for example in automobiles, trucks, trams, trains, ships or airplanes) in this case the trim 4 according to the present invention for decorative materials can be provided with overlapping mats or covering parts in transport vehicles or as mobile folding covers of a floor or simply as a lining of the floor covering. Structural parts for covering houses (for example bathrooms, furniture or resting furniture, tents, display equipment) in this case the ornamental material bordered according to the invention can cover service holes in the bath tub skirts or shower cubicles, as well as security boxes or distributors of electrical systems in residences or exhibition equipment. The use of bath mats or mats for the feet is also considered. Adjustment elements or coating on portable equipment (for example in travel luggage storage, files, or instruments) in this case the decorative materials according to the invention can cover both containers in the cover of the tank or in divisions such as the address or other compartments. It is noted that in relation to this date, the best method known to the applicant to carry out the aforementioned invention, is that which is clear from the present description of the invention. Having described the invention as above, the contents of the following are claimed as property.

Claims (19)

1. CLAIMS 1. - Method for bordering decorative material in particular a carpet or plastic sheet, cloth or sheet, where a border is formed in a die mold for back pressure and / or rear injection, at least in parts of an edge of this decorative material, the method comprises the following steps: insertion of decorative material in a cavity of the die mold, the cavity is formed by die halves; introduction of a flowable mass in the cavity; close the die mold; distribution of the flowable mass in the cavity; expulsion of the bordering decorative material after at least partial solidification of the mass; method characterized by the following steps: forming a part of a ring or frame that extends essentially at right angles to the main direction of extension and along the edge of this decorative material, and a multiplicity of fingers that engage over the decorative material; connection of the hoop and fingers to the decorative material;
2. 2. Method according to claim 1, characterized in that the ring or frame is produced in such a way that it projects on the level of the main direction of the extension of the decorative material.
3. 3. - Method according to claim 1 or 2, characterized by the integral formation of a core that engages under the decorative material on the underside of the ring.
4. 4. - Method according to claim 3, characterized in that the webs are connected at least in regions, to bars, which form a supporting lattice for the decorative material.
5. 5. - Method according to claim 3, characterized in that the webs are connected, at least in regions, to the support plate for the decorative material.
6. 6. Method according to claim 5, characterized in that the holes are in recess in the support plate.
7. 7. - Method according to one of claims 4-6 characterized in that the protuberances are integrally formed on the underside of the support lattice or the support plate.
8. 8. - Method according to one of the preceding claims, characterized in that the fingers that engage under the decorative material and the support plate are also formed integrally on the underside of the ring, the core or the support plate.
9. 9. - Method according to one of the preceding claims characterized in that the ribs that are continued in the fingers are integrally formed on the outer side of the ring.
10. 10. - Method according to claim 8 or 9, characterized in that the fingers are formed integrally in an alternating sequence on the upper side and lower side of the ring.
11. 11. Device for trimming decorative material, in particular a mat, a cloth or a sheet of plastic, comprising a die mold for back pressure and / or rear injection, by means of which a shaped border can be produced at least parts of the edge of that decorative material, characterized in that this die mold has recesses that are designed for the molding of the fingers and consequently, for a flow around a mass and edge of the edge of the decorative material, and this mold of The die has retaining webs, by means of which the recesses can be separated from one another and by means of which the decorative material can be placed in a suitable position, in order to prevent deformations of the edge, these retention webs reach as far as the web. recess for a hoop, which extends essentially at right angles to the main direction of the extension and along the edge of that decorative material, and which can produce Rse in a piece with a multiplicity of fingers coupling on and / or under the decorative material and can be connected to the decorative material in the same operation.
12. 12. - Device according to claim 11, characterized in that the die mold comprises means for integrally forming a core, a support lattice or a support plate on that ring.
13. 13. Device according to claim 12, characterized in that the die mold comprises means for integrally forming protuberances on the core, the supporting lattice or the support plate.
14. 14. Device according to claim 12, characterized in that the die mold comprises means for integrally forming strips on the support plate.
15. 15. - Device according to one of claims 11 to 14, characterized in that the die mold comprises means for skirting decorative materials identical or different on both sides of the ring.
16. 16. Device according to one of claims 11 to 15, characterized in that the die mold comprises means for skirting a decorative material on one side of a ring and for forming an insert on the other side, the insert comprises the Same material as the hoop.
17. 17. Device according to one of claims 11 to 16, characterized in that the die mold comprises means for forming a narrowing on one side or on two sides in the ring with the result that a flexible connection can be made between Different decorative materials and the insert.
18. 18.- Trim of a decorative material, in particular of a mat, cloth or plastic sheet that can be formed in a die mold, by back pressure, and / or rear injection, at least parts of an edge of this material decorative, and comprising a ring or frame extending essentially at right angles to the main direction of the extension and along at least part of the edge of that decorative material, characterized in that there are a multiplicity of fingers formed integrally on the ring, to form a structure > flexible longitudinal subdivided of this border, the fingers engage on and / or under the decorative material and are able to be produced in one piece with the ring and connect to the decorative material in the same operation.
19. 19. Rim of a decorative material according to claim 18, characterized in that at least some of the fingers are connected in the region of their tips, to the tips of the adjacent fingers through a transverse web.