DE1479605C - Method and device for the manufacture of marbled sheets from ther moplastic plastics, in particular floor coverings - Google Patents

Claims (4)

The invention relates to a method and a pre-pulling device, so that the feed units and the pull-off device for the production of marbled sheets are neatly separated in the direction,
on a multi-roll calender. If there is one or two in the marbled path Marbled webs and plates, as they are particularly desired colors, can be used as a floor covering and for similar purposes in addition to the intake gaps of the six-roll calender. Supplied in bulk. In doing so, however, one of the general rules is to allow the marbling material to have a certain longitudinal orientation of these additives in the marine form of granules or thin film with the morated sheet.
Base material run into the calender. In this case, however, a longitudinally oriented marbling is required for the implementation of the proposed method, which according to the invention can be particularly advantageous and is not desirable in all cases. After a six-roll calender with four vertically arranged known processes, z. B. serve webs with rollers, with the top and bottom strip marbling divided and the pieces of roller each a further roller in the opposite direction of rotation by 90 ° of a second calendering 15 device is horizontally upstream.
subject. However, the six-roll calender is also cumbersome to work in this way. still other advantageous uses. In addition, the previously known Ka-. So, for example, a marbled floor lander can only be pulled up to a thickness of about 0.8 mm can be, so that usually ao a printed intermediate part, z. B. a plastic of Floor coverings the individually drawn webs in 'or paper foil or a fabric fleece, with a transeiner special device after renewed repairing the upper part and a lower part laminated with heating welded together or in one of the den by placing the nip between the middle Calender system downstream doubling device rolls to the total thickness of the incoming web must be united with one another. 35 is set. In contrast to the known Finally, for double-sided coverings in calendering processes, the webs can be in Weaving and doubling of foils four-roll the required thicknesses on the calender in one known calenders, in which the fabrics are drawn and doubled or leren roller gap with which the outer rollers are split. 30 The production speed of the six-roller ca- the. Landers is involved in the manufacture of marbled The invention aims to make the production of coverings at about 10 to 15 m / min and the dou- marbled webs made of plastics, especially fading at around 15 to 25 m / min, of floor coverings, up to 1.6 mm thick with the help of this. a multi-roll calender in one operation 35 ren guarantees greater economic efficiency, without upstream devices for the production of The invention is based on the in the drawing Marbling granulate or film and without an exemplary embodiment shown schematically switched devices for doubling or calendering explained in more detail. to enable welding of individual tracks. In the drawing are with 1 to 6 the individual According to the invention, this object is thereby achieved. solves that differently colored plastic material called manure. The direction of rotation of the rollers is the upper and lower feed slot of a six indicated by arrows. The reels 1 and 6 are the roller calender, then one further roller 2 or 5 horizontally in opposite directions Roll gap passes with bead formation and the direction upstream. different colored webs through the stowage in the 45 The customarily produced, different nip of the middle calender rolls with colored plastic mixtures are mixed over the other and as a marbled finished web with 7 and 8 indicated conveyor belts that are drawn in. Since here the feed material is fed to the tension gaps 9 and 10 of the calender. The three roller nips each run through with bead formation - Mixtures then run through with bead formation, the mixing of the differently colored webs 50 each has a wider roller gap 11 and 12 and is only done in the third roller gap, then delivers the roller through the congestion in the roller gap 13 -the method is homogeneous, 3 and 4 equal in strength and mixes moderate and dimensionally stable paths with short, cloudy paths with constant regularity. The marbled finished web 14 is marbled, the risk of air inclusions being subtracted in the direction of the arrow in the usual way,
sen is pushed back to a minimum. Another 55 The advantage of the process can be seen in the fact that high patent claims:
Temperatures can be run so that polyvinyl chloride with a high K value can be used 1. Process for the production of marbling, whereby the mechanical properties of the th webs made of thermoplastic materials, covering are improved. In addition, if necessary, especially for floor coverings, a high filler content is also possible. Multi-roll calender, thereby ken n-Finally, with the pure calendering process, it can be shown that differently colored synthetic fabrics are also transported at comparatively high speeds. gap (9, 10) of a six-roll calender (I to «) According to another feature of the invention, 65 can be fed, followed by a widened roller be expedient to pass through the intake gaps of the six gap (II, 12) with the formation of a bulge, and roller calender from one side of the calender to feed the differently colored webs through the stowage bags and the finished web to the other side and in the central nip (13) of the rollers (3, 4) mixed together and peeled off as a marbled, finished sheet (14). 2. The method according to claim 1, characterized in that the feed gaps (9, 10) of the Six-roll calender (1 to 6) fed from one side of the calender (1 to 6), and the marbled one Web (14) is drawn off to the other side of the calender (1 to 6). 3. The method according to claim 1 or 2, characterized in that one or both feed gaps (9, 10) of the six-roll calender (1 to 6) in addition to the basic mix of different colors Granulate is fed. 4. Six-roll calender, in particular for carrying out the method according to the preceding Claims, characterized by four vertically arranged rollers (2, 3, 4, 5), whose top roller (2) is a roller (1) and whose bottom roller (5) is a roller (6) in opposite directions Direction is upstream horizontally. 1 sheet of drawings