DE345389C - Process for the continuous detachment of metal or colored film skins adhering to their liquid-permeable spray-on tape by means of drawing the strip through a solution liquid - Google Patents

Description

According to the German patent specification 253935 metal or colored foils are achieved by using as a base for the adhesive membrane, to spray onto the liquid containing the metal or paint powder and a binding agent is, liquid-permeable material such as paper or fabric selected and the resulting Foil after drying by completely or partially dissolving the adhesive is separated from the base. This process allows continuous Production of a strip from the paper o. The like. Backing, the adhesive membrane and which is still a bit dull, sprayed on

■ there is 15 or otherwise applied top layer, hereinafter referred to as the film skin, but the patent gives no means of continuously separating and washing the Foil skin, but it only mentions all

ao in common, the process can of course also be carried out continuously by long strips of the base and the support through suitable containers or onto others Wise subject to the solution processes. With this general indication, this is continuous Can not be removed yet. Rather, the long strip must be used to obtain the bare foil (with which in the following only the detached and turned, much shinier foil skin is meant to be cut into pieces. The pieces come in a frame with a fabric floor and fabric blanket clamped and rinsed until the adhesive layer has dissolved. Only then, after opening the frame, can the base be subsequently applied with spray tape referred to, lift off the loosened adhesive layer, and by further pivoting the any remaining film skin in the closed frame must be completely covered by the adhesive removed. The excavation and trimming of the foil then requires special tasks Care and effort. The paper backing is no longer usable and must be thrown away will. In the bobbin factory, the stacked pieces of film must be delivered there are now glued to each other in order to wind them up in a long strip with new paper strips as an intermediate layer to make loose bobbins can. In order to produce solid bobbins, the new paper web must also be coated with glue be provided.

The invention now relates to a method for the continuous removal of liquid-permeable on their Spray-on tape adhering metal or colored foil skins by pulling the strip through a solvent liquid and consists essentially in the fact that from the wound with the spray tape to the outside, wet strip roll peeled off the end of the spray tape on its own and the strip which, after the spraying tape has been pulled off, around the circumferential section of the roller

again, but now with the layers of glue turned outwards arises, is dried by a second dissolving liquid and preferably by rolling it up between blotting paper, which sucks in any remaining adhesive. This gives a number of advantages achieved, which on the basis of the processes in the new method illustrative Drawing are explained in more detail. ίο On the drawing shows:

Fig. Ι pulling the strip through the first solution bath and winding the Strip out of this with the spray tape that z. B. can be a paper tape, according to Outside;

Fig. Ζ shows the detachment of the paper tape end from the one previously glued to it Film skin and the sticking of the film skin end to the j wound up under it Paper; i

Fig. 3 shows that the paper tape i has been pulled off; i

Fig. 4 shows the moment from which; no longer the paper tape alone, but this j together with the film skin is pulled off in such a way that ^ the latter lies on top of the paper and ^ the! Join the adhesive-free sides of the paper tape and the film skin, so that both adhesive sides are turned outwards; ]

Fig. 5 shows on an enlarged scale this' Layering or arrangement of the turned; Strip dar and j

Fig. 6 shows the implementation of the flipped Swiping through the second bath of solution and then wrapping it in blotting paper.

From the roll α , the strip consisting of the paper tape P with glued-on film skin F , as indicated in patent specification 253935, is guided through the dissolving liquid c under a roller bar h. In accordance with the new process, the j strip is wound up so that the paper tape is on the outside of the roll d \. In order during the 'coiling a new role ■ following measures in the same manner to, the thickness' d ■ enough wound roll to other camps; appropriately relocated to the same machine frame. As long as it is still wet enough, the most essential measure of the invention is now the paper tape end P '(Fig. 2) on its own: detached and pulled off. The film skin adheres to the paper tape underneath. It is best to fold open the end of the strip, strip the edge of the film skin from the edge of the paper tape and brush the edge of the film skin onto the wound paper. He holds onto this so tightly that the paper tape continues to himself! can be withdrawn alone (Fig. 3). If a piece of tape is pulled off the circumference of the roll or lifted backwards (Fig. 4), there is another strip, but with a detached film F ", which lies with its side Fy on the upper, adhesive-free side P / of the paper tape therefore now both adhesive seldom Pu and Fk (Fig. 5). ■ When passing through a second solution bath g under the roller bar h (Fig. 6), the adhesive layers are thoroughly detached and washed off, especially if you choose warm water, which also saves time even for the first bath c is recommended. a Gummiabstreifleiste in a known manner in conjunction with the guide roller bar I take most of the water from the strip from which can then be further dried benebig rolls. Preferably, m it between blotting paper one because of this as yet still adhering adhesive residues sucks;.! the film, ie the lively by washing shiny skin become F, is here for the first time '· continuously, without the described complicated, time-consuming and a lot of rejects resulting frame treatment of individual strip pieces, obtained on the spray belt, so that loose bobbins can easily be continuously wound from the washed and dried strip. If other known means than blotting paper rolls are selected for drying, then bobbins are immediately wound up on the original spray-on belt. The tedious trimming, stacking and gluing of pieces of film and finally the insertion of special intermediate or support sheets are no longer necessary. This saves a considerable amount of wages, time and material.

For the production of solid bobbins, i. H. those whose film is glued to the paper web, you only need to make the film skin containing resin and wash it as described and run the dried strips over a heating roller when they are rolled up into bobbins or beforehand allow. The film then sticks firmly to the paper web at. In addition to a special paper web, it is also coated with glue saved up.

The resinous film is also recommended for embossing purposes and makes a coating of the Glue with glue is not necessary if you use a hot die.

Claims (2)

P ATENT claims: i. Process for the continuous detachment of metal or colored foil skins adhering to their liquid-permeable spray-on tape by pulling the strip through a solution liquid, characterized in that of the wet strip roll (d) wound outwards with the spray-on tape (P), the end (P ') of the Spray tape detached for itself, peeled off and the strip (P, F "), which after Peel off the spray tape end around the roll circumference section again, but now with the adhesive layers turned outwards, is passed through a second solution liquid (g) and is preferably dried by rolling it up between blotting paper (tu) , which sucks in any adhesive residues that are still adhering, so that from the so Both sides turned and washed spray tape film strips (P, F ") can easily be wound loose bobbins. 2. The method according to claim ι for the production of solid foil bobbins or embossing foils, characterized in that the film skin is made from a resinous mixture and that Reattaching the film to the paper tape or to the embossing point by heating is effected. 1 sheet of drawings.