EP3186071A1

EP3186071A1 - Method for producing a separation net and separation net

Info

Publication number: EP3186071A1
Application number: EP15756369.3A
Authority: EP
Inventors: Holger VEHRING; Peter Stiefel
Original assignee: Kkv Marken- und Patentschutz GbR
Current assignee: Kkv Marken- und Patentschutz GbR
Priority date: 2014-08-25
Filing date: 2015-08-10
Publication date: 2017-07-05
Also published as: US20170282831A1; WO2016030174A1; DE202014103950U1

Abstract

The invention relates to a method for producing a separation net and a separation net (10), in particular for vehicle interiors, having a net-like, tear-resistant textile web (11) formed of textile threads (12), which is cut into any peripheral contour, wherein the loose ends (13) of the textile threads (12), which were created by a separating cut, are securely enclosed at the edges in a plastic material of a single-layered edge strip (18). The textile web (11) can have any peripheral contour and the loose ends (13) of the textile threads (12) of the textile web (11), which were created by a cut, are embedded at least at the side edges (16, 17).

Description

Process for producing a separation net and separation net

The invention relates to a method for producing a separation net and a separation net, in particular for vehicle interiors, which has a net-like, tear-resistant textile fabric formed from textile threads, which is cut to a desired circumferential contour, the edges generated by a separating cut free ends of the textile threads bordered securely are. In a known separation net according to EP 0 672 557 B1, after the punching of a trapezoidal textile web, an edge enclosure made of a PVC film is provided, which is folded around the punching edge and welded to the punching edge. The PVC film protects the free ends of the textile threads of the textile web produced by the punching from tearing out and sums them up. In a separation net according to DE 101 28 104 C1, instead of one folded PVC strip, two edge strips made of PVC are used, between which the net edge is inserted and welded. In both previously known separation networks, the upper and lower marginal edges are enclosed in this way in each case. In a separation net according to EP 1 125 800 B1 or DE 103 38 130 B4, such a bordering arrangement is also provided for the side edges by means of a PVC film, which is folded over the punching edges in a double-agile manner and welded. In the area of the upper and lower edge, in DE 103 38 130 B4, an edge fastening made of compacted knitted fabric is formed. In addition to the elaborate production of the aforementioned separation nets, these have the disadvantage that the double-layer edge reinforcement leads by means of the PVC film u thick edges. However, such thick marginal edges are not problematic because they increase the extent of the wound bobbin when winding the separation network on a winding shaft in a disadvantageous manner, which increases the space requirement for such a bobbin. This is undesirable in a motor vehicle. From the document EP 0 942 087 A2 a method for the production of roller blinds is known. Here, in the manufacture of the textile web melt threads are woven or acted. These Schmeizfäden be melted and form after cooling and a corresponding blank a solidified edge. These marginal edges are due to the integration of the Schmeizfäden i the textile structure, namely as a warp, weft or diagonal weft thread, limited to this orientation. A textile web with any peripheral contour, in particular with curves or recesses, can not be achieved in this way.

The invention is therefore based on the object, a separation network - in particular for vehicle interiors - to provide that does not have the disadvantages of the prior art and in a simple process, especially in an industrial mass production process, can be produced inexpensively.

This object is achieved by a method for producing a separation network with the features of claim 1 and with a separation network having the features of claim 10. Advantageous embodiments describe the subclaims.

The dividing net according to the invention comprises, as is known, a net-like, tear-resistant textile web formed from textile threads, for example a woven or knitted fabric or a knitted fabric. This textile web is tailored to any desired circumferential contour mitteis a known separation process and the free ends of the textile threads produced by the separating cut are bordered edged edge by an edge. In accordance with the invention, the edge bordering of the free ends of the textile threads of the textile web formed by the blank is achieved by a single-ply edge strip. This edge strip consists of a plastic aterial, in which the free ends of the textile threads are embedded. This einlagigc edge strip, for example, by casting the plastic material to the textile web, by spraying or another thermal process are achieved in which the plastic material is softened and the free ends of the textile threads are enclosed by the soft, molten plastic material. After cooling of the single-ply edge strip, the embedded free ends of the textile threads are securely held in these edge strips, namely embedded in the solidified plastic material. The single-ply edge strip can in this case the textile web completely or only partially covers

Preferably, such a Randeinlassung, namely the provision of this single-ply edge strip, in particular at the straight or curved side edges. The side edges are normally the edges which are trimmed to produce the desired circumferential contour of a separation net. If, during a cutting, for example in a known stamping process, a trimming of the upper or lower marginal edge or a blank on the circumferential side, these edge regions can be bordered in the same way by a einlagigcn edge strip. By such a blank, the separation network may have any circumferential contour with rounded edge areas and even with jumps back in the contour, the free ends are bordered fen in these edge areas by the single-edge Randstrei.

If such an edge enclosure, namely the formation of the single-ply edge strip, for example, produced by an injection molding process, this method also provides the ability to achieve any three-dimensional edge geometry and any surface structure of the edge strip. This means that the edge strip can, for example, show a different thickness along the peripheral contour of the separation net. Fastening elements can be produced together with the edge strip, ie the edge strip is formed integrally with the fastening elements. The surface of the marginal strip can be structured, for example having a relief, a grain or a logo. By selecting the plastic in addition, the rigidity of the edge strip can be influenced. For example, a stiff edge strip is present when using a thermoplastic, such as polyamide, and a soft, rollable edge strip is achieved, for example, by using an elastomer such as ethylene-propylene-diene elastomer (EPDM).

The dividing net according to the invention has the advantage that there is a dividing net with a thin Randeiiifassung, so distorted when winding a narrow winding body. Advantageously, such a dividing net can be made with any desired circumferential contour, i. the textile web can have a rectangular, trapezoidal or, for example, adapted to the shape of the vehicle interior circumferential contour. Such a separation net can be used both in a car, for example for the separation of the rear from the front interior, as well as for the separation of a sleeping cabin in a truck or for the separation of an interior in a van.

In addition, such Trennnet /, be prepared advantageously by a method, in particular by an automatable manufacturing process. Thus, for example, a textile web produced by weaving or knitting or knitting can be fed to a finishing step where, to improve the properties, this textile web is coated with a suitable finish, for example for solidifying the textile threads or for providing a flameproofing or for producing a coloring. Optionally, a thermal fixation takes place. Thereafter, in any known manner an arbitrary running cut of the textile web is made, for example by punching or by cutting, for example by laser cutting, by water jet cutting, hot cutting or by means of ultrasound or by another known separation technology. This cutting can be done separately or in a form in which the injection molding, casting, pressing or otherwise the thermal bonding of the plastic with the textile web takes place. In a preferred embodiment, the edge-side connection is made by injection molding in an injection mold. One or more textile blanks are placed in an injection mold, closed the mold and molded after closing the injection mold to these blanks edge liquid plastic. After cooling, the separating nets obtained are taken from the injection mold. The injection mold can be designed so that a desired edge geometry and surface structure of the edge strip is formed during injection molding. In another embodiment, the edge-side connection is made by hot pressing. In a mold, a soft plastic material and one or more textile blanks are introduced. When closing the mold, a melting of the soft plastic compound is caused by pressure and temperature application, which acts on the edges of the textile blanks and connects after cooling with these. The resulting separation nets can be removed from the mold. Also in this method, the shape can be designed so that a desired edge geometry and surface structure of the edge strip is formed. For the separation network a textile web of thermally stable textile threads is used, in particular textile threads that remain unchanged in softening of the plastic material for the edge strips in their technical properties so far that there is no marginal weakening of the net-like textile web in the production of the edge strip. Textile threads of polypropylene (PP), polyamides (PA) and / or polyesters (PES) are preferably used.

Thermoplastics or thermoplastic elastomers are used for the plastic. The selection is made according to the desired stiffness of the edge strip to be formed. Preferably, thermoplastic elastomers are used as plastic for a soft edge strip. The plastic used has a corresponding fatigue strength to perform the holding functions and at the same time a good elasticity, so that the separation net can be wound up with the plastic edge strip. In addition, for use in a motor vehicle, a plastic with sufficient light fastness, thermal stability, low emissions and low flammability can be used.

The invention will be illustrated with reference to three Ausführungsbcispielen and explained in more detail with reference to the drawings. Show it:

Fig. 1 is a plan view of an inventive separation network;

Fig. 2 is a plan view of another separation network;

Fig. 3 is a plan view of a third separation network. The same reference numerals have been used for all embodiments, even if the embodiments deviate.

The separation net 10 shown in FIG. 1 summarizes a net-like, tear-resistant, formed from textile threads 12 rectangular textile web 1 first This is a knitted fabric in which the textile threads 12 form almost square mesh openings.

To produce the desired circumferential contour, the textile web 1 1 was separated from a web of already equipped knitted fabric, whereby free ends 13 were produced on the textile threads 12 at the lateral, straight marginal edges 16, 17 by the separating cut. The marginal edges 16, 17 may also have an arbitrarily curved course by means of a corresponding separating cut. However, the free ends 1 3 to the textile threads 12 are securely bordered, namely by the Kunststoffniaterial a single-layer edge strip 18, in which the ends 13 of the textile threads 1 2 are embedded. This lateral edge strip 1 8 establishes a single-layer cohesive connection between the plastic material and the textile threads 12, without the strength of the textile web 1 1 becinflusst. The free ends 13 of the textile threads 12 are safely held in the plastic. A tearing of the textile threads 12 is prevented by this material connection with the plastic material of the single-layer edge strip 1 8. In this example, PES / PA textile threads 12 were used.

2 shows a further embodiment of a separation net 10. This separation net 10 comprises a net-like, trapezoidal textile web 1 1, which also consists of a knitted fabric. In this knitted fabric, however, diamond-like mesh openings are provided. The trapezoidal peripheral contour was obtained from the original knitted fabric by a separating cut, namely at the side edges 16, 17 and at the upper peripheral edge 14. These cut edges are subsequently bordered by a single-layer edge strip 18 and thus the free ends 13 of the textile threads 12 of the textile web 11 formed by the blank are integrally embedded in the plastic material of the single-layer edge strip 18 on the side edges 16, 17 and the upper marginal edge 14.

A further AusführungsbeispieJ, Fig. 3. The inventive separation net 10 shows a net-like textile web 1 1 with a peripheral contour, which is adapted to the shape of the vehicle interior of a motor vehicle, so that between the vehicle walls and the separation network, the opening area is reduced to a minimum which ensures a good separation of the interiors. Depending on the design of the motor vehicle and the different design of the sidewalls and the roof of the motor vehicle, it is possible to provide suitable separating nets which possibly also have recesses in their edge course. In the textile web 1 1 is in the em case to a tissue. At al four edges four edges 14, 1 5, 16, 1 7 a single-layer, circumferential edge strip 1 8 is provided from plastic material, which is materially connected to the textile threads 12 of the textile web.

The embodiments of a separating network 10 shown in the drawings are only a few examples of a separating network according to the invention. The invention is not limited to this embodiment. In addition to a net-like textile web 1 1 with square or diamond-like mesh openings are also rectangular, honeycomb or other mesh openings I like. It is essential that the free ends of the textile threads 12, which are produced by an arbitrarily extending cut of the textile web 1 1, are securely bordered at the edge. The mesh openings of the textile web 1 1 can be the same or different sizes. In addition, the textile threads 12 of the textile web 1 can be designed uniformly black, white or colored. In a known manner, the textile web may additionally be provided, according to the application, with a suitable finish, for example with a flame-retardant coating or with a coating for solidifying the textile threads 12.

The separating nets 10 shown in the examples can be provided in a known manner with fastening elements, for example in the form of a hook, an eyelet or in any other form. At the upper peripheral edge 14 fasteners may be provided for connection to a metallic support rod and at the lower peripheral edge 15 fasteners for connection to the winding shaft. Such fasteners may also be formed directly integral with the edge strip 18. At a lower peripheral edge 15, the edge strip 18 may be formed, for example, to a piping, which can be fed into a groove of Wi ckelwellc.

LIST OF REFERENCE NUMBERS

partition net

textile web

Textile thread

free ends

Marginal edge, top

Randkantc, below

side edge

edge strips

Claims

claims

Process for producing a separation network with the following process steps:

- producing a net-like, tear-resistant textile web,

- Equipping the textile web,

optionally thermal fixing of the finished textile web,

Cutting the textile web into textile blanks for separating nets,

- Edge-side joining of these textile blanks with plastic in a thermal process step.

A method according to claim 1, characterized in that the edge-side joining is carried out by injection molding in an injection mold, wherein one or more inserted into the injection mold textile blanks after closing the injection mold edge are subjected to liquid plastic and after cooling, the separation nets or the obtained Injection mold can be removed.

A method according to claim 1, characterized in that the edge-side joining is carried out by hot pressing in a mold, wherein in the form one or more textile blanks and edge soft plastic material is introduced and closing the mold by hot pressing a melting of the Kunststoffniasse and connecting mi takes place the textile blanks and after cooling, or the separating nets obtained are removed from the mold.

A method according to claim 2 or 3, characterized in that at the same time thermal bonding fasteners are formed from the plastic, which are an integral part of the separation network, preferably the edge strip of the separation network.

Method according to one of the preceding claims, characterized in that at the same time a thermal connection Surface structure is introduced into the edge strip to be formed of the separation network, for example in the form of a relief, a grain or a logo. 6.) Method according to one of the preceding claims, characterized in that during thermal bonding edge striations are formed on the dividing net, which have a different thickness along the marginal edges and transversely to the marginal edges of the dividing net, 7.) Method according to one of the preceding claims, characterized in that the blank by punching or cutting, such as La serschneiden, water jet cutting, hot cutting or Ultraschallschnei the, takes place. 8.) Method according to one of the preceding claims, characterized in that the textile web is made of thermally stable Textililfäd s by weaving, knitting or knitting.

9.) Method according to one of the preceding claims, characterized in that when finishing the textile web is dyed cyan and / or coated with a flame retardant.

10.) separation network, in particular for vehicle interiors, comprising a net-like, tear-resistant, formed of thermally stable textile threads (12) textile web (1 1), which to a desired peripheral contour with

Edge edges (14, 1 5, 1 6, 1 7), is cut, with free ends (13) of the textile threads (12) are securely bordered,

characterized in that

the textile web (1 1) has an arbitrarily extending peripheral contour and by egg nen blank resulting free ends (1 3) of the textile threads (12) of the textile web (1 1) at least on the side edges (1 6, 17) in a plastic material of a single-ply edge strip (18) are bedded.

11.) Separating net according to claim 10, characterized in that in addition also further marginal edges (14, 15) or edge regions of the Unifangskontur the textile web (11) are embedded in a plastic material of a single-ply edge strip (18).

12.) separation net according to spoke 10 or 11, characterized in that on the edge strips (18) fastening elements are provided, which are formed integrally with the edge strip (18). 13.) Separating net according to one of the preceding claims 10 to 12, characterized in that the edge strips (18) have any three-dimensional edge geometry and surface structure, preferably a grain, a relief, or a logo. 14.) Separating net according to one of the preceding claims 10 to 13, characterized in that the net-like textile web (11) is a woven or knitted or knitted fabric, preferably a knitted fabric.

15.) Separating net according to one of the preceding claims 10 to 14, characterized in that the textile web (11) has rectangular, square, diamond-shaped or honeycomb-like mesh openings.

16.) Separating net according to one of the preceding claims 10 to 15, characterized in that the textile web (11) has the same or different sized mesh openings, preferably in each case equal size

Mesh openings.

17.) Separation net according to one of the preceding claims 10 to 16, characterized in that the textile web (11) by a stiff edge strip (18) is partially or completely edged, preferably of one

Edge strips (18) made of polyamide. Separating net according to one of the preceding claims 10 to 16, characterized in that the textile web (1 1) of a soft edge strip (18) is partially or completely edged and rolled up, preferably from an edge strip (18) of ethylene-propylene-diene elastomer (EPDM).

19.) Separating net according to one of the preceding claims 10 to 18, characterized in that the textile web (1 1) is equipped with a flame-retardant Beschiehtung.

20.) Separation net according to one of the preceding claims 10 to 19, characterized in that the textile threads (12) of the textile web (1 1) are colored. 21.) Separating net according to one of the preceding claims 1 0 to 20, characterized in that the textile web (1 1) has an adapted to the shape of the vehicle interior Unifangskontur.