DE2257299C3 - Process for the production of a row of zipper links from thermoplastic material - Google Patents

Description

Closing link row I made of thermoplastic kiiuMsio.U One recognizes. dai.i a l'rofilsp ang 2 c \ irudicrt and mil angcloimien V ei schlul.igliedci η 3 pass away. after that cooled down and verwrecki and thermally treated i; will.

The Stranggeprel.iic. Ih'inugene IVolil-?> Strand 2. der VerlormungsteinperaRii aulucr miu.it-U ^- It) Ur after the extrusion head 4 de extrusion press 5 a downstream Druckumforn ing unuvworien. and / was like that. that thereby the V c; ■, chlußjiieder 3 are molded by PreUlheßen. How the Versdilußgüe- '"tier 3 look can be seen in particular from the I ι i ?. 2. One recognizes. dal.i die a / «. : m .-: i \ '. The Druckumlorniiiiii. ¹ iin: i the l'rel. Flow achieved with suitable Te! Iipera! Uri _-: \ which appear as it were by themselves when one works immediately behind an extrusion press 5. The temperature can, however, also be generated by dielectric warning of shaped profiles 2. The temperature for the diameter is generally above the back surface.

I): Ίι k'iinii U iüiing bezeicnnel cmc VerlormuiiL '. at the in: Hei eich>! l ^: i unlorniiiiig a Hicilcn des Maieruils L-intr: !!. Sn dal · by l'relli let the angelormtch k;: p |) i .-! K (iple S eizetit'i were. One gets ¹ ^ o a · irL'el · irmtes I ': 1 ililhaiid. Mn durchlaiilcnd'-m trag straiii: IO and .ii ^ elonMcn V'erschlnKg'iedeni i. die | cd ') ch mi! linen thighs 7 in the 1 heue de \ 1 ragsü'aiii'es 10 I '111 cherish from it the her / iistelleuden Reii.Uei's. ! 1 ein / eiJi ι: · ■ fi l'leils 1 I all glek üsinnig or abv. changing in one: iul m the other ;, ruling jjleichs.un twisted. Be ^s' s all twisted in dei same direction, s. <Eiil-ile'ien \ ersehlLlßgliederieihen. as they are in l'ig I da; gi'sielil. If they are twisted alternately into one or the other relining, the na ku-like connections run flour in dcv in I 1 l ¹ . 1 shown at an angle, but parallel to one another, as ihes I i g. i recognize out loud. By llogenpleilc in I 1 g. 3 the direction in which the individual coupling heads have been twisted has been indicated. |. \ ienlall the so formed the Reil.ivei final rcihc I a: thermal lieli.indung for 1 immersion unierv. ' ^: en

1 sheet of drawings

Claims (1)

Claim: Process for the production of a series of zip fasteners made of thermoplastic material, the individual locking members of which have dome mounts have forming legs and dome heads and united by rear connecting parts are characterized in that a Prol'ilstrang strjnggeprel.it and immediately after the locking links. the dome heads and the rear connecting parts are pressed in such a way that that the legs of the individual locking members and the rear connecting parts of this Link cords lie in a common plane, that afterwards the link cords cooled down and stretched as well as the connecting links thereafter be rotated in a plane orthogonal to the Reü.Uerschlußebene and the so formed Tearing link row of a thermal treatment is subjected. The invention relates to a method of manufacturing a thermoplastic slide fastener link row Plastic, the individual closure members of which form leg and dome receptacles Dome heads aulweise and are united by rear connecting parts. Tear-closure link rows of the described construction are based on Kunsisioffmonofilament (DT-PS 11 35 394). The plastic monofilameni is basically shaped like a helix or meander, in such a way that individual Closure links arise that more or less each other in a projection on the zipper level Have overlapping legs to which the rear connecting parts connect. Does it If there is a helical design, the rear connecting parts are in a shingled shape to each other. If the design is meandering, the rear connecting parts are located parallel to each other. All this has changed in terms of the structural design and functional, in particular also proven in terms of resistance to breaking. For the production of such rows of zip fasteners however, either a winding process with a winding mandrel around which the plastic monofilament is wound or a laying process with a gear-like laying wheel is required, with loops in the gaps between the teeth are inserted, which later form the legs and the closure members, while the rear Connecting parts are continued from tooth to tooth gap. At the same time, a heat treatment must be carried out Purposes of therniofixicrung take place. Wrapping process or laying process on the one hand, heat setting on the other represent a relatively complex design. This also applies with regard to the time required. In this regard, zip fasteners are simpler, the fastener elements injection-molded onto straps or strings made of thermoplastic material have (DT-OS 16 10 442), in which so the closure gücderrcihcn are ultimately made by injection molding, while rear connecting parts miss. The union of the connecting links to form connecting link rows is not sufficiently stable here, in order to be able to guarantee an exact pitch under all stresses. Otherwise it is received (CI IPS 3 64 614) Extruded PrwfiKirang from thermoplastic KunsWoff / wipe embossing rollers to deform so that s Series of connecting links. It is with Embossing rollers worked that a finished zipper link row produce whose locking links more or are designed less mushroom-shaped, but the Torrn of the closure members of the initially described ίο Zipper links-ihe cannot have. Such zippers are small, at least with finer ones Execution, in relation to the Aiifbruehsfcsugkeii flour the requirements. Finally it is known (DT-Gbm 17 59 404). a preliminary product from a streak of artificial golf to be punched out for the production of a row of kiss-lock links, in which the connecting links initially lie in the plane of the artisan strip and through others Sireifcnabschniite are connected. By zigzag loops The cold part of the plastic strip will be the Fasteners then brought into the orientation that they must have in the zipper tendon. This has the problems with the manufacture of rows of zipper links of the structure described above is not affected. The invention ;; the underlying task is a Specify the method with which, dispensing with winding processes or laying processes from thermoplastic Plastic a row of zipper links of the structure described above can be produced came: and with a high production speed. To solve this problem, the invention teaches that a profile strand is extruded and immediately thereafter the locking links, the domed heads and the backward ones Connecting parts are pressed so that the Legs of the individual locking links and the rear connecting parts of this link strand lie in a common plane that then the link strand bgekühlt and straightened as well as im Then the fastener elements are rotated in a plane orthogonal to the zipper plane, and the row of zipper links thus formed is subjected to a thermal treatment. The advantages achieved are to be seen in the fact that, according to the invention, rows of zip fasteners are made of thermoplastic Plastic can be produced by extrusion, the individual closure members Kuppelköpfc have forming legs and Kuppelköpfc and by rear connection Manure parts are united - as was previously only possible through a winding process or through a laying process was possible. All the advantages of extrusion can be used, so that at high production speeds can be worked. In the following the invention is illustrated by means of a drawing which shows only one exemplary embodiment explained in more detail. It shows Fig. 1 is a scheme for the inventive Proceedings, F i g. 2 is a perspective view of two coupled rows of Rei ^ ersehlußgliederreihen, which according to the Invention methods have been established and F i g. Figure 3 is a view against the rear connectors of another embodiment of a row of zipper links. The Fig. I explain: first the invention Process for the production of a continuous zipper