DE1817609U - DEVICE FOR THE PRODUCTION OF A PLASTIC AND / OR PAPER WEB REINFORCED BY A THREAD INSERT. - Google Patents

Description

Hermann C r a s m ö 1 1 e r, Neuenkirchen via Gütersloh, Wiedenbrück district Device for the production of a plastic web reinforced by a thread insert and / or paper. The innovation relates to a device for producing a by a thread reinforcement sheet made of plastic and / or paper.

Most plastic sheets have the disadvantage that they are under Stretch the tension a little, so that the blanks of the same warp and theirs Lose shape. For many areas of use, e.g. B. for the production of upholstery covers, Sacks made of plastic film, raincoats, packaging purposes etc. are used accordingly Plastic sheets, which by a thread infl are reinforced. For this purpose, a loose linen weave fabric is formed and this is coated on one side or on both sides with the plastic. The manufacture of loose tissues is however very expensive. In addition, these fabrics are difficult to handle because they are in particular tend to fray and warp at the edges. It must be accordingly relatively wide edge areas of the finished plastic sheet. cut and be discarded. About the difficulties in handling the fabric insert To diminish, it has also been suggested to use a loom immediately before of plastics. to arrange layering device. However, this increases the working speed the plastic coating device by the operating speed of the loom limited. The conditions in the production of appropriately reinforced paper webs are similar.

According to the innovation, there is now a device for producing a plastic web reinforced by a thread insert - or proposed paper which is much more efficient and which is able to produce several kilometers of web per working hour without the need for a previously formed fabric. Accordingly, the production price for the web achieved by the device according to the innovation is only a fraction of the production price of the known, comparable webs.

The device according to the innovation contains a merging station, by means of their two sheets of plastic or paper from both sides to a thread insert are pressed, and at least one connection station, by means of which the two Tracks including the thread insert together by welding and / or gluing get connected.

The innovation is based, among other things, on the knowledge that the Use of a linen-tied fabric in an art. fabric web of the described This is kind of a waste, as the threads are held by the plastic mass anyway. The thread insert in the web used according to the innovation can thread from chain and consist of these crossing "weft threads", but it should be made clear, that all warp threads lie over the weft threads or vice versa. The warp threads and weft threads do not actually form a fabric. Of course only warp threads or only weft threads can be used, depending on which one Properties the web produced should have.

According to a preferred embodiment, accordingly the merging station the two webs by pressure rollers on a thread chain pressed on by synthetic or natural threads. Furthermore, at the merging station by means of a feeder a transverse weft be inserted between the lanes.

Inserting the warp threads is not too difficult as these can be passed through the appropriate thread guides between the at the two pressure rollers brought together plastic films can run in. That Insertion of the weft thread, however, can be done at the high working speeds accomplish the device according to the innovation only more difficult.

According to the innovation, a novel feeder device for the weft thread is accordingly proposed, which consists of two circumferential disks which are arranged at a distance from one another and which have a larger number of notches or teeth on their periphery. A shuttle or a thread guide moving back and forth between the two disks lies a weft thread in a loop around the web between two noticeable notches in one disk and pulls it out from there continue to the aligned notch on the other disc. There bit « If it detects a loop again and leads the thread back to the next notch in the first disc, and so on.

The shuttle or the thread guide can be used in various ways being controlled. According to a first preferred embodiment, the shuttle or the thread guide is arranged axially parallel to the two disks Roller be. which contains a slot, its settlement corresponds to a rounded zigzag line. The shuttle or the thread guide can also be controlled electromagnetically or pneumatically.

In order to dig the threads out of the notches again, one extends of the two pressure rollers of the merging station between the two panes and with part of its mantle protrudes a little over the periphery of the two disks emerged. The between see the part of the two discs not covered with the weft thread The web fed in and running over this pressure roller lifts the weft thread accordingly out of the notches The device according to the innovation can have two in a row included switched welding stations, with either one or both of them can be operated. One of the welding stations delivers at a distance from one another arranged, transverse welds, while the other welding station in the Provides spaced-apart, longitudinally extending weld seams. Preferably, the welding stations are adjusted so that the warp threads and / or the Weft threads of the thread insert come to lie in the weld seams.

According to a preferred embodiment, there is the welding station to form the transverse weld seams from a rotating, spoke-shaped Arrangement of welding elements and a chain-like arrangement of counter-elements, the two webs with the thread insert between the welding elements and the Counter elements is clamped. All welding elements can be connected to a slip ring be fed with high frequency.

The welding station for forming the longitudinal weld seams consists preferably of a heated roller, which is arranged at a distance from one another, has annular ridges.

The webs with the thread insert are from pressure rollers or one Pressure chain pressed against the webs of the heated roller. Preferably the weft loops lying on the edges of the web from a trimming device cut open, which is upstream of the welding station.

In the event that a welding of the tracks is not possible or not is appropriate or in the event that a support of the welded connection Paths desired by gluing or adhesion of the threads to the film webs can be one or more adhesive application. or spray on. directions provided be, by means of which the warp threads and / or the weft thread and / or one or both of the tracks with a Apply glue or a solvent will. If the thread insert slips at very high working speeds is to be feared, so that there is a risk that the threads are no longer exactly come into the weld seams, the adhesion of the webs to each other and the adhesion of the threads to the webs is supported by a high voltage source, which applies static electrostatic charges to the threads or to the webs.

The special structure of the film web produced according to the innovation enables an application of paint or an imprint to be provided between the two individual webs. This application of paint or the print cannot wear off or rub off during use. Accordingly, a paint application device or a printing unit is preferably provided which provides the surfaces of the two film webs facing each other with a paint application or an imprint. In the accompanying drawings, a preferred embodiment of a device according to the innovation is shown. 1 shows a partially sectioned side view of a device according to the innovation, FIG. 2 shows the unwinding of the warp threads and the weft thread, FIG. 3 shows a device for spraying the warp threads and the weft thread with adhesive or a solvent, FIG. 4 shows an end view and a side view of the feeder run and device for the weft thread on an enlarged scale, Fig. 5 Fig. 6 the merging station of the webs and the Fades insert on an enlarged scale, Fig. 7 is a perspective view of a device for inserting the weft thread in the feeder device according to the 4 and 5, FIG. 8 a section of the device according to FIG. 7 on a larger scale, FIG. 9 a bar for guiding the warp threads, FIG -respectively. an end view of an interchangeable and baren bar for generating the transverse welding Fig. 12 seams, FIG. 13 a broken end view and a partial and Broken side view of a roller for production Fig. 14 of the longitudinal weld seams.

In the device shown in Fig. 1, the wesentw union Equipment and parts are arranged on a common frame 1. It is straightforward understandable that the different facilities also in smaller or larger Can be arranged or set up at a distance from one another.

A roller 3 is rotatably inserted into a bearing stand 2 of the frame 1, from which an upper web 4, preferably made of a thin plastic film, is unwound will. Another roller 6 is rotatably inserted in a further bearing stand 5, of which a lower sheet 7, also preferably made of a thin plastic film, is unwound. The plastic film 4 runs directly onto a honeycomb 8 of a merging station. The lower plastic sheet 7 is over the rollers 9 and lo another roller 11 fed to the merging station. The two plastic film webs 4 and 7 are therefore of the rollers 8 and 11 pressed together at the roller engagement. At the roller engagement, 4 and 7 warp threads run between the two plastic film webs 12, which are guided by a holding power 13 (see also FIG. 6). In the Fig. 9 has the holding bar 13 shown enlarged in a conventional manner a larger number of regularly spaced holes 14, wherein one of the warp threads 12 is passed through each hole 14, which of thread rolls 15 are unwound. The thread rolls 15 can, as shown in Fig. 2, on thorns 15a be arranged offset on a frame 16, which is connected to the frame 1 via a Bar 17 is connected. On the frame 16 is still seated on a mandrel 18a larger roll 18 from which a weft thread 2o is unwound. The weft thread is 2o in a thread guide 21 (Fig. 7, 8 and lo) some. which one hangs in a slot 22 to a bar 23. and is arranged forward. The thread guide 21 sits with a stub 24 (Fig. lo) in a groove 25 of a roller 26. The development of the groove 25 is a zigzag line with rounded corners. When the roller 26 rotates that is, the thread guide 21 is driven to and fro in the slot 22.

The thread guide 21 engages in a feeder device, like them is shown in Figs. The feeder device consists of two a common shaft 27 arranged parallel to each other, adjustable disks 28. The distance of the two disks 28 on the shaft 27 is so set that it is essentially the width of the two plastic film webs 4 and 7 corresponds. The disks 28 have a larger number on their periphery of notches 29 which are separated from one another by teeth or webs 3o. The teeth 3o own kel. ne barbs 31, as shown, for. B. from Fig. 6 can be seen.

The thread guide 21 now places one end of its movement. hubes the weft thread 2o around one of the teeth 3o of the one disc 28, leads it from there to the aligned notch 29 of the other disk 28 and forms there again a loop around a tooth 3o at the other end of its travel stroke. The disks 28 move forward by one tooth 3o with each stroke of movement of the thread guide 21, see above so that in one half of the periphery of the discs 28 each of the weft thread Is inserted zigzag or meander. The film web 7 runs through the free part between the discs 28, so that they are the weft insert does not bother.

The pressure roller 11 lies between the two disks 28 and protrudes with its outer surface somewhat over the periphery of the disks 28. Accordingly, the weft threads inserted into the notches 29 are lifted from the film web 7 running over the roller 11, as shown on an enlarged scale in FIG. When the rollers 8 and 11 are in contact with the rollers, the two film webs 4 and 7 are pressed against the warp threads 12 and on the weft thread 2o excavated from the notches 29. The arrangement of the two film webs 4 and 7 with the thread insert will now be referred to below with the reference numeral 4o. The film web arrangement 4o is placed between a spoke-shaped arrangement of welding elements 42 and a chain-shaped arrangement of counter-elements 43 via a deflection roller 41 (FIG. 1). leads. The shown in Figs. 11 and 12 on an enlarged scale to th welding elements 42 wear rib-shaped approaches to the the arrangement 4o of the film webs by the tension of the chain 43 is pressed. The welding elements 42 are exchangeable arranged on a rotating drum 44. The chain of counter elements 43 is guided via guide wheels 44 and a drive pinion 45. The speed of rotation of the chain of counter elements 43 corresponds to the speed of rotation of the rotating welding elements 42, the throughput speed of the film web arrangement 4o and the unwinding speed of the webs 4 and 7. Accordingly, a welding element 42 remains in contact with a certain point on the film web 4o until the film web again runs out of the device for producing the transverse weld seams, for example via a deflection roller.

This processing time and thus the welding time is for example two Seconds. Appropriate adjustment makes it possible to keep the welds on those To erzaugen places where welding threads lie in the film web arrangement 4o. Each weft thread is accordingly enclosed in a transverse weld seam, how this is formed by each rib 42a of a welding element 42.

The welding can be done by appropriate heating of the welding elements 42, for example by means of resistance wires.

However, high frequency welding is preferably used.

The electric current or the high frequency energy are the welding elements 42 supplied via supply conductor 47a and a slip ring 42b.

The film web running out over the deflecting roller 4u therefore consists of the upper film web 4, from the lower film web 7 and the thread insert from the Warp threads 12 and the weft thread 20. It has at regular intervals from each other transverse welds. This product, denoted by the reference number 47 can of course be used immediately as an end product. In many In some cases, however, it is desirable to have the web 47 still with longitudinal weld seams to provide. For this purpose, the web 47 runs over a roller 48, as shown in an enlarged Scale shown in Fig. 13 and Fig. 14 is. The roller 48 has ring on its outer surface. shaped stele 49. The jacket of the roller 48 is through Resistance wires 50 heated, which via a slip ring arrangement 51 with electrical Electricity can be fed.

The film web 47 is attached to the jacket surface of the roller by a pair of pants 52 48 pressed. The pants 52 run over a drive roller 53 and a larger one Number of guide rollers 54. The finished product thus produced becomes one Roll 55 wound up, which is seated in a storage stand 56 of the frame 1.

In the event that one of the two tracks 4 and 7 is not made of plastic, d. H. made of paper or other materials, or if the both tracks 4 and 7 is not possible or only with difficulty, it is sufficient if the two Lanes are glued together. The reels 8 and 11 are then. still some pairs of press rolls switched off, which accomplish the adhesive connection. The welding stations can then be omitted or remain out of service. If no self-adhesive foils or paper webs are used, an adhesive application device is en pressure rollers 8 and 9 upstream. In some cases, the adhesion of the threads to the webs 4 and 7 are supported in that the threads with a adhesive be sprayed. Such an arrangement is shown in FIG. Here is from a nozzle tube 57 a liquid adhesive on the warp threads 12 and on the sprayed over the discs 28 tensioned weft thread 2o. The excess glue can be collected in a channel 58.

The thread guide 21 can of course also by other means, be driven for example by an eccentric or electromagnetically. Even though welding with intersecting weld seams has proven particularly successful, can of course also be welded over a large area or spot welded be applied. It is useful that at the edges of the film web arrangement 4o lying weft thread loops before the creation of the transverse weld seams to cut open. A corresponding cutting device 59) FIG. 1) can serve for this purpose.

The film web produced according to the innovation has a very high as a result of the thread insert. high tensile strength. A "warping" of the film web is excluded, so that corresponding feed cuts are true to size and are suitable for a wide variety of applications areas can be used.

For reasons of clarity, the drive elements have been shown in FIG not shown in detail for the various rotating parts. The drive can be done from a main engine.

If printed film webs 4.7 are to be processed, in which the weld seams should be at very specific points on the print pattern Of course, a close-fitting optical control can also be provided, which regulates the same course.

Furthermore, the facing surfaces of the film webs 4.7 a color application or an imprint can be applied. The paint application units or printing units are then arranged between the rollers 3 and 6 and the honeycombs 8 and 11, respectively. High-voltage devices can also be provided at these points Apply electrostatic charges to the film web 4 or 7. The slides then adhere better to each other and can be welded better. These facilities too were not shown for reasons of clarity.

Claims (1)

Protection claims 1. Device for the production of a thread input layer of reinforced plastic and / or paper, - ,. characterized by a joining station (8, 11), by means of which two webs (4, 7) made of plastic film or paper are pressed from both sides against a thread insert (12, 20) and by at least one connecting station, by means of which the two webs (4, 7) are connected to one another by welding and / or gluing, including the thread insert (12, 20). 2. Apparatus according to claim l, characterized in that on the Merging station the two webs (4, 7) by pressure rollers (8, 11) to one Thread chain (12) made of plastic or natural threads are pressed on. 3. Device according to claims 1 and 2, characterized in that at the merging station a transverse one by means of a feeder device Weft thread (20) is inserted between the webs (4,7). 4. Device according to claims 1 to 3t, characterized in that the feed device for the weft thread (20) consists of two spaced-apart rotating disks (28) which on their periphery have a larger number of barbs (31) having notches (29 ) or teeth (30). A. 50 Device according to claims 1 to 4, characterized in that a shuttle or a thread guide (21) reciprocating between the two discs (28) puts a weft thread (20) in a loop around the web between two adjacent notches (29) of the guides a disk (28) around and from there to the aligned notch (29) of the other disk (28), forms a loop there again and guides the thread (20) back to the next notch (29) of the first disk (28) and immediately. 6 Device according to Claims 1 to 5, characterized in that the shuttle or the thread guide (21) from one axis parallel to the two Discs (28) arranged roller (26) is controlled, which contains a groove (25), whose development corresponds to a rounded zigzag line, 7. device according to Claims 1 to 5, characterized in that the shuttle or the thread guide is operated and controlled electromagnetically or pneumatically. 8. Device according to claims 1 to 7, characterized in that one of the two pressure rollers (11) of the merging station between the two disks (28) extends and with a part of their lateral surface slightly over the periphery of the discs (28) protrudes so that the between the not with the weft thread (20) covered part of the disks (28) fed and over them Pressure roller (11) running web (4) the weft thread (20) from the notches (29) of the Washers (28) lifts out. 9. Device according to claims l to 8, characterized in that a welding station is provided, which spaced apart, transverse Welds supplies. 10. The device according to claims l to 9, characterized in that a welding station (48, 52) is provided which supplies spaced apart, longitudinally extending weld seams. 11. The device according to claims 1 to 10, characterized in that the welding stations are adjusted so that the warp threads (12) and / or the weft threads (20) of the thread insert come to rest in the weld seams. 12. The device according to claims 1 to 11, characterized in that the welding station for forming the transverse weld seams consists of a rotating, spoke-shaped arrangement of Scmveißelemente (42) and a chain-shaped arrangement of counter-elements (43), the two tracks (4, 7) with the thread insert between between the welding elements (42) and the counter elements (43) be clamped. 13. Device according to claims 1 to 12, characterized shows that the welding elements (42) via a grinding to ring (fed with high frequency. 146 Device according to claims 1 to 13, characterized shows that the welding station for the formation of the slow running weld seams consists of a heated roller (48) which has annular webs (49) arranged at a distance from one another. 150 Apparatus according to Claim 13, characterized in that the webs (4, 7) with the thread insert are pressed against the webs (49) of the heated roller (48) by a circumferential pressure pants (52). 16. Device according to claims 1 to 15, characterized shows that the wefts lying on the edges of the track thread loops taken up by a trimmer (59) are cut, which is preferably upstream of the welding stations. 17. The device according to claims 1 to 16, characterized in that at least one adhesive application or - spraying device (57) is provided, by means of which the warp threads (12) and / or the weft thread (20) and / or one or both of the webs ( 4.7) can be provided with an adhesive or a solvent. 18. Device according to claims 1 to 17, characterized in that the adhesion dsr webs (4, 7) to each other and the adhesion of the thread (12, 20) to the webs (4, 7) is supported by a high voltage source which is applied to the Threads (12, 20) or on the webs (4, 7) applies static electrostatic charges. 19 «Device according to claims 1 to 18, characterized in that a paint application device or a printing unit is provided which provides the mutually facing surfaces of the two film webs (4, 7) with a paint application or a print.