DE3115457C2 - Process for the discontinuous decating of woven, knitted fabrics and the like. - Google Patents

Abstract

The invention relates to a method for discontinuous decating of fabrics, knitted fabrics and the like on a decating machine with at least one decating cylinder, on which the follower and the untreated fabric are wound into a roll and this is then subjected to a steaming process and a subsequent suction process . In order to increase the service life of the follower and thus reduce the cost of renewing the follower, it is proposed according to the invention to dehumidify the follower during the winding process. According to a preferred embodiment of the method according to the invention, the follower is dehumidified by connecting the decatizing cylinder to a source of negative pressure, for example a suction fan. The method according to the invention removes moisture from the follower during the winding process while doing without special heating devices, while the untreated goods simultaneously experience an increase in moisture as the goods, which are much more hygroscopic than the follower, absorb part of the moisture of the follower after the "blotting paper process".

Description

The invention relates to a method nsch the preamble of the claim.

The DE-Z. M ^ jSand Textile Reports, 1972, pp. 456-460 deal with a method of this kind, on a decating machine with at least one decating cylinder, on which a follower and the untreated fabric are wound into a roll and this is then subjected to a steaming process and subsequent suction process, the Follower is dehumidified during the wrapping process.

The drying takes place with the help of heated radiant surfaces, which once the condensate formation during Prevent steam treatment in the decat position and on the other hand, those who passed ihik./i Dry the followers by radiation.

The costs of such heating devices are disadvantageous. There is also the further disadvantage that the surface of the follower is smoothed (ironing effect) and so that the follower itself is compacted, which leads to premature wear as a result of the increased resistance leads.

DE-OS 28 02 322 has a method for wrapping from decating cylinders to the subject. For feeding the beginning of the follower to the winding The decatizing cylinder is connected to a vacuum source. This will give better adhesion of the follower in the initial stage of the winding process and possibly in the final stage of the unwinding process strives. A conscious drainage of the follower is not intended there.

The invention is based on the object, the service life of the follower without any weight to increase falling additional funds to a maximum. This is done according to the invention in that the dehumidification of the follower during the winding process by connecting the decatizing cylinder a vacuum source takes place. Since the vacuum source for the suction process after steaming anyway is imperative, this can also be used to carry out the follow-up dehumidification during the entire process Winding process can be carried out. So there is no need for any additional funds.

The measure according to the invention achieves a double effect. On the one hand is the follower during the entire winding period over a period of about six to twelve minutes excess moisture removed: on the other hand, the untreated decoration goods, i.e. the fabric, Knitted fabrics and the like an increase in moisture during winding, because the much more hygroscopic decatation goods according to the "erasure sheet process" compared to the follower part of the follower moisture - Aided by the surface pressure when winding up - absorbs in itself The Dekatiergut is thus already moistened when wrapping, which leads to an improvement in the Dekatiereffekt.

An additional accumulation of moisture in the subsequent steaming process is also created, because the follower, cooled by the suction effect, has a stronger condensation in the lap during the steam treatment leaves behind.

The method according to the invention is based on the knowledge that suction on a follower aid of the untreated fabric does not result in any wraps detrimental effects in the Dekatiergut leads, whereas a suction one from followers and already treated goods always formed with a change in the effect, so the handle and the Shine of the goods

The suction de; untreated wicke ice leads but to the desired dehumidification of the follower, with the additional side effect occurring the increase in moisture in the untreated decoration material is even an advantage.

The method according to the invention is illustrated in more detail using exemplary embodiments in the drawing, which shows in a purely schematic manner
μ Fig. 1 is a vertical section through a first embodiment of a decatizing machine for carrying out the method according to the invention,

2 shows a vertical section through a second embodiment of a decating machine for implementation of the method according to the invention.

Fig. 3 is a partial side view of the arrangement according to F ig. 2.

With 1 (Fig. I) the follower is referred to, which together with the untreated. so not yet decated Ware 3 on a decat: erzylivi '? R 2 wrapped will. While the idler I. is wound up under selectable longitudinal tension, the untreated Goods 3 supplied with the slightest longitudinal pull.

In the embodiment of FIG. 1 is the decatizing cylinder 2 in position I (winding position), in which the decatizing treatment also exists from damping and subsequent suction - is carried out. The follower I is thus of the Unwinding point II to Aufwickelstellc I held under controlled tension and wrapped around, namely forward and also backwards.

The follower 1 is dehumidified during the winding process. The dehumidification takes place, for example by connecting the Dekatierzylinders 2 to a in F i g. 1 of the drawing for the sake of clarity not vacuum source shown further. A suction fan, for example, can be provided as the vacuum source will.

In the implementation form according to FIG. 1 of the drawing booth tion in which the decating process is carried out directly on the decating cylinder 2 of the unwinding point I. no design changes or modifications are required. Just a change the individual process steps and their sequence must be brought about.

In the decating machine according to FIGS however, the work flow is different. Here takes place the winding parallel to the decating process as a

IO

15th

chen. The treatment does not take place in the position of winding point I, but in a different position, namely in that of the treatment center! II. Here, too, the follower 1 is pulled by the longitudinal pull Unwinding point II wound to winding point I. However, here the follower 1 from the unwinding point II completely unwound and completely wound up on the decating cylinder 2 in the winding point I in this case Working method, the untreated goods 3 are wound up in the area of the winding point I and at the same time the already treated goods 3a unwound at the unwinding point II on a driven conveyor belt 4,4a stored and transported with this to a storage location not shown

The transport of the winding from the winding point I to the treatment point IH comes through the transfer point IV comes about. The individual working positions are set around the pivot point 5 of a roulette wheel 6 by pivoting it through 120 ° clockwise one after the other For example, decat cylinder 2 arrives from the winding point 1 to the transfer point IV, from where it is moved through a translatory movement to the treatment point III. With this geschilder.en At the same time, an unwound decating cylinder moves into the position of the winding position I one and one full lap that has already been treated takes the position at unwinding point II. The end of the follower 2 is now brought from the unwinding point II to the winding point I and the winding process described above for the follower 1 and the goods 3 can. <o kick off.

As a rule, it is now in the area of the treatment center III decated lap before the end of the new lap formation at winding point I. done and is automatically moved back from the treatment point III to the transfer point IV in the roulette 6 and taken up by this.

The method according to the invention is therefore in full Turning away from the conventional process steps of the decating process, the untreated goods 3 already with the common lap formation of goods 3 and follower 1 during winding on the decating cylinder 2 in the area of the winding position I one subjected to effective suction through the effect of negative pressure. As a result, the follower 1 becomes excess Removed moisture, which partially penetrates into the untreated goods 3 for an effective vacuum effect That can be done anyway with such decating machines Existing extraction fans are best suited for this purpose Strömungj'iiaschineri because they are blown opposite rotary piston u. ^ IgI. a better adaptability unfold between the suction volume on the one hand and the negative pressure effect on the other.

With the so-called »multi-cylinder decating machines« According to '"i g. 2 and 3, the suction connection at d« 5 required suction fan 7 ar. the winding point I as well as at the unwinding point II are provided.

According to FIG. 3, with the aid of the valves 8, 9, 10 different switching sequences can be achieved, which allow four variations for the suction effect.

Possibility 2

When the valves 8,10 are opened and the valve 9 is closed, the full amount is only extracted at unwinding point II.

Option 3

To design the handle and the shine of the goods 3, the suction fan is activated via an automatic timer 7 start controlled and open the valves 8,10 while the valve 9 is closed. To this Way begins the effect of the winding suction time

Possibility 4

If the change in the effect of the goods 3 in the decated roll is undesirable, the valve 10 remains closed and the suction is concentrated on the common winding point when the valve 9 is open I of the untreated goods 3 and the follower 1.

To carry out this suction treatment, the individual decating cylinders 2, 2a, 2b in FIG. A pivoting movement of the roulette 6 can therefore only take place after the sealing cones 19 have moved back into their uncoupled starting position.

Possibility Number 1

When all valves 8,9,10 open, the Aufwikkclstclic I as well as on the unwinding station II, each with a resistance-dependent suction volume.

For this purpose 3 sheets of drawings

35

40

50

55

60

b5

Claims (1)

Claim: Method for discontinuous decating of woven, knitted fabrics and the like on a decating machine with at least one delamination cylinder on which a follower and the untreated fabric be wound into a roll and this is then followed by a steaming process and subsequent Suction process is subjected, with the follower dehumidified during the winding process is, characterized in that the dehumidification of the follower during the The winding process is carried out by connecting the decanting cylinder to a vacuum source