DE1912773A1 - Device for applying locally limited amounts of binder to webs - Google Patents

Description

Carl Freudenberg Company March 7, 196 9 1912773

6 9-4 Weinheim / Bergstrasse Dr.Z / Sn ON 4 98

Device for applying localized amounts of binder to webs

From many publications, e.g. the German Auslegeschrift No. 1-248 006, it is known to apply PVC or other plastic pastes To print textile webs. Whereas in the past, carpets in particular were provided with such PVC dots to prevent them from slipping, Today, interlinings for clothing are often printed with thermoplastic pastes. After drying then remain on the interlining material in a very nice, even manner Distribution of small piles of thermoplastic binder. Such an interlining material is then only needed with the adhesive side to be placed on the outer fabric to be stiffened «outer fabric and stiffening fabric can then simply be ironed together. The tedious sewing that used to be common is no longer necessary »

In some cases it is now useful instead of a paste to apply dry powder in small piles evenly distributed on a sheet. It is understandable that one should be dry Powder not with the help of the usual roller or rotary printing machines can print. The latter are only suitable for processing viscous pastes.

With the aid of the device according to the invention described below However, dry powder can be applied to a web in the form of small heaps - distributed in a pattern.

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Figure I shows a schematic perspective view of the invention Contraption.

Figure II shows schematically a section through di.e according to the invention Contraption..

The latter consists of a perforated cylinder 1 »over one Web 2 is unrolled. Inside the cylinder 1 there are now four rods 3, 4, 5 and 6. They extend from one end of the cylinder to the other. The rods 3 and 4 and 5 and 6 are respectively connected by rigid sheets 7 and 8. Around the rods 4 and 6 are two more running through the entire cylinder Sheets 9 and 10 are rotatably arranged. These rotatably arranged ™ sheets 9 and 10 each touch the inner wall of the perforated Cylinder. The arrangement is chosen so that between the two Points of contact of the sheets 9 and 10 and the cylinder wall Distance remains which corresponds approximately to the diameter of a hole 11 in the perforated cylinder.

If the space enclosed by the metal sheets 7, 8, 9 and 10 is now filled with powder, the latter can only emerge from a hole 11, if this is directly above track 2. With others Wordsi The distance between a hole and the track is zero the moment the powder hits the track. on this way, sharply delimited piles with the same sweater are created mix.

One would put the dry powder in a perforated cylinder without it fill the installation according to the invention 3 to 10, then it would When the cylinder is rolled over a path, powder also falls out of the holes, but the powder would not only be in that Fall out of the hole instantly if its distance from the track is equal to gauze, but when the hole is already 1/16 to Has made 1/8 of a turn, 'if so its distance to the path, depending on The diameter of the cylinder is a few millimeters to centimeters. However, because of this trickling down of powder, the job is so washed out that there can be no question of an exact, pile-shaped application. '

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Now the ends of the metal sheets 9 and 10 must, however, have a very specific one Press force against the inner wall of cylinder 1. If the pressure is too strong, the rolling movement may be slowed down. If the pressure is too weak, however, powder can get behind the sheets 9 and 10. This powder then falls as it continues to roll sometime out of the holes 11 of the cylinder and smeared the order again.

It is easiest to place a magnet below the metal sheets 9 and 10 12 to be arranged.

So you work with a stationary system, consisting of a cylinder 1 mounted on a table with the built-in systems 3 to 10. A magnet is located directly under the table top. When putting the device into operation, one can - in Fig. I coming from the left - a path 2 run below the cylinder 1, which in turn lies on a rubber path. This rubber track is so tensioned that it presses against cylinder 1. If this web 2 is then pulled to the right, then there is a rotation of the perforated cylinder jacket. While the systems arranged therein 3 to 10 exactly on the edges of a hole stand, a precisely dosed and sharply defined amount of powder can fall onto the web 2. Even after a slight turn this opening is now closed again. The "window" opens only again when the next hole is exactly above the track (distance equal to zero).

In the manufacture of ironable stiffeners with With the aid of the device explained above, the powdered web is placed as close as possible behind the cylinder 1 in a hot air chamber let in. The thermoplastic grains soften in the sharply defined piles. It finds thereby a firm anchoring on the carrier web 2 takes place.

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Claims (3)

Claims (1. Apparatus for applying locally limited amounts of binder ^^^ gen on webs consisting of a) a fixedly arranged perforated cylinder 1, the can rotate around its axis, b) rods 3, ■ +, 5 and 6 extending along the entire length of the cylinder 1, the rod pairs 3 and h and 5 and 6 being connected to one another by rigid metal sheets 7 and 8, c) on the metal sheets movably arranged around the rods H and 6 9 and 10, the length of which is such that the ends of both Sheet metal 9 and 10 touch the inner wall of cylinder 1. 2. Device. According to claim 1, characterized in that £ a magnet is arranged directly below the table top, the force of which is such that a constant pressure of the Sheet metal ends 9 and 10 against the inner wall of the cylinder is guaranteed. 3. Method of applying localized amounts of binder on tracks by means of the device according to claims 1 and 2. 0098A0 / 0638 Blank page