US1778863A - Treating fabrics - Google Patents

Description

oct. 21, 1930. H MALY 1,178,863 f A TREATING FABRICS Filed Nov. "7, 1928 Patented Oct. 21 1930 NITED STATES masas Y 'rnnA'riNG FABRICS Application led November '7, 1928, Serial No.

My invention relates to a process for preheating, squeezing, steaming, and inish drying fabrics in one continuous operation, and to an apparatus intended for carrying out this process. i

In the process of drying fabric in the usual tentering. and Adrying machines, the fabric retains the more or less smooth condition in which it reaches 'the machines. In

1o all cases the web, in the condition as it comes from the washing apparatus and after having been dried by centrifugalization or suction, is fed to the drying machine with all the creases that arose previously. The consequence thereof is thatA the dried web subsequently must be subjected to a very intense dry-hot squeezing operation and intense dry steaming by very hotsteam, to impart to 'it a creaseless smooth appearance.

By these drastic drylhot operations, however, hitherto considered as necessary, the web, or the fibrous material it consists of, is seriously injured.

Now my present invention has for its 0bject to so treat the wet web in one uninterrupted operation previous to the usual drying operation, by squeezing it in a hot cylinder press and simultaneously steaming it under this pressure, that the creases which arose during the extraction of the water and the drying operation are thoroughly re.

moved.

I realize this problem by using the moisture still existing in the already' squeezed web and amounting about to 40 percent, to revive the fibrous material the web consists of, and to protect the material from being burnt due to drying. The subsequent finish drying operation employed in a very mild 40 degree then definitely establishes the smooth condition of the web.

While in the hitherto usual operation the individual steps followed one another in the order drying, squeezing, steaming, these operations with my new process are .per-

formed in following order: squeezing,

' steamin drying, the' entire treatment beper ormed in one continuous operation.

My new method -may also be employed prevlously to teasingy the webs, in order to tby way of example in the accompanying 317,802, and in Germany' Nvemter 17, 1927.

feed to theteaseler a web in entirely smooth v condition. IThis results in anvabsolutely uniform teasing effect, because an absolutely uniform smooth 'surface is offered to the teasels, which consequently have the possibility to likewise act uniformly.

The lapparatus intended to .carry out my new process partly comprises known and partly new elements. A new element con- A sists in a press composed of a pressing cylinder and a trough, or concave, and in a feed guide for the web, this guide serving to pre-heat the web before it arrives between the pressing cylinder and the trough. A further new element consists in guiding the .web further Varound said cylinder for the subsequent finish drying. The squeezing and finish drying operations may, however, be performed by means of special heating means, such as heated cylinders.

In order to allow of my invention to be moreV easily understood, a preferred embodiment of the apparatus serving to carry it out and two modifications thereof are illustrated drawing.

While not yet squeezed, the web a to be treated is guided by rollers b through a suction device c of known design, the water extracted from the web being collected in -the tank d. Thereupon the web thus predried is guided over a transverse stretcher e formed by suitable hackle or gripper chains, and over a guiding cylinder f, which in the embodiment illustrated in Figure 1, at the same time forms a temple. The location of this cylinder is so determined that the predried web comes intopreliminary contactwith a Vheated squeezing cylinder h at the point denoted by g, on which cylinder'the 90 web -is then pre-heated on the. section g-z'. Thereupon the web passes from i to -c between the squeezing cylinder k and the trough m, which latter Vmay be likewise heated. On the way from z'. to k the web 95 is subjected both to vaporization of its moisture and to a squeezing pressure. The steam generated hereby cannot escape` since the web constitutes its ownpacking means. Now, as it is wel1known,any libre is in the 100 most tractable condition as long as it is in a hot and Wt condition, and this property in many eases is troublesome, e. g., in coloring, heating, and Washing fabrics, as it provokes undesirable felting; in the present process, however, this property has a favorable effect -in realizing the object aimed at.

From the point k, where the web leaves the gap existing .between the` cylinder L and trough m, up to the point In, where vit gradually passes over to the guide roller0,the web is completely dried by said cylinder le., and leaves the apparatus. When the web should be beamed up after having been treated according to my new process in the described cylinder-trough press h, m, it may immediwherein a. suction device precedes said tenter and temple.

Apparatus for heating fabrics comprising a heated cylinder clement and a concave element between which a moist. fabric web is adapted to be passed to be squeezed and steamed, a pre-heating;f roll for the weh inlmediately in advance of said elements, and a heated drying roll imn'iediately behind said elements.

6. Structure according to claim 5 wherein the pre-heating roll serves as temple.

In testimony whereof I aiiix my signature.

' HERMANN MALY.

ately be supplied from guide rollero to a beam 1', as illustrated in Figure 2. If required, the roller o may be heated inside, .so

that-'a further finish drying takes placeV thereon.

In Figure 3 is shown a different manner of guiding the web before entering'and after leaving the cylinder-trough press h, m. In this modification two stationary or rotary heating bodies rv, y are-arranged beside the trough m instead of the temple cylinder f and guiding cylinder 0 of Figure 1., around which bodies the web a is guided. In this case too the cylinder a; may serve as temple.

In treating webs according to my described process, climatic conditions are of no influence on the fabric, more particularly the material may be subjected to the described treatment in a more wet condition than caused by the moist climate of many tropical countries.

What Igelaim and desire to secure by Letters Patent, is

1. Apparatus for treating fabrics comprising a heated cylinder element and a concave element between which a moist fabric web is adapted to be passed to be squeezed and steamed,- means for pre-heatinf1r the web immediately prior to its coniinement between said elements, a tenter and `a temple preceding said preheating` means in the order named, and means for drying the web immediately subsequent to its confinement between said elements.'

2. Apparatus for treating fabrics comprislng a heated cylinder element and a concave element between which a moist fabric web is adapted to .be passed to be squeezed and .str-ameri, means for pre-heatingrr the web comprising a temple for guiding the web in contact with the cylinder element in advance Y of the concave element, and means for drying the web comprising a member for guiding the web in contact with the cylinder element to the rear of the concave element.

3. Structure in accordance with claim 2 wherein the lastnamed guiding member is in the formA of a heated roll.

4C. Structure in accordance with cla-im 1

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