Textiles Part 6

=Finishing.= The fabric as it comes from the loom is in an imperfect condition for use. When worsted fabrics leave the loom they require but few and simple finishing operations, and in this respect differ much from woolen cloths, which require elaborate finishing operations.

The finishing processes of woolen and worsted cloths are similar. The following description of processes and machines gives a clear idea of the necessary finishing processes for a standard woolen or worsted cloth; for particular styles of finish the processes must be varied in accordance with the particular requirements of the style of fabric in hand.

=Perching.= The fabric as it comes from the loom receives a perching and measuring inspection at the weave room before leaving for the finishing room. This examination is to detect quickly such imperfections as require prompt attention at the loom.

=Burling.= Every knot that has been tied in the threads during winding, dressing, beaming, and weaving, must be looked for and felt for during burling, carefully drawn to the surface of the cloth, and then clipped off with the scissors, leaving the ends long enough so that no s.p.a.ce without a thread will occur. Threads which are found loose on the face or back of cloth, caused by the weaver having tied in a broken end, should be cut off and not pulled off. All places where threads are not woven in are marked so that the sewing-in girl (mender) can adjust such places. The cloth is subjected to perching again. It is examined for imperfections, and when these are found, they are marked with chalk to call the attention of the menders to such places.

=Mending.= The object of darning or mending is to make all repairs in the structure of the cloth before the process of fulling. The mender must have a good eye for colors necessary to produce various effects and for the interlacing of the threads. More exact work is required for threadbare fabrics that require little if any finishing afterward, than in dealing with a face finish fabric, where the nap is to be raised and will cover many imperfections so that they will never be noticed in the finished cloth.

=Fulling.= The object of fulling is to render woolen and worsted goods stronger and firmer in body. Fulling is similar to felting, the princ.i.p.al object of each being to condense the fibers, thereby increasing the firmness. Certain varieties of woolens are fulled nearly one-half their original width and length. The process of fulling includes three steps: cleansing, scouring, and condensing the fibers of the cloth. The object of scouring is to get rid of oil used preparatory to spinning, and to remove from the cloth stains and the sizing used in dressing the warp. The cloth is first saturated with hot water and soap, and is then scoured and rubbed between the slow-revolving rollers of the machine from two to eighteen hours, according to the character of goods and the amount of shrinkage desired. The more prolonged the operation, the more the material shrinks. When sufficiently fulled, the length of cloth is scoured to free it from soap. This is done with water, warmed at first, but gradually cooled, until at the end the cloth is worked in cold water.

Next the cloth is stretched uniformly in all directions, so that it may dry evenly without wrinkles or curls. Sometimes the cloth is placed in a hot-air chamber to hasten the drying. The fulling or shrinking is effected by the application of moisture, heat, and pressure. Every one is familiar with the fact that woolen blankets, flannels, and hosiery tend to contract with frequent washings, gaining in thickness and solidity what they lose in elasticity. Such shrinkage is greatly hastened when they are rubbed vigorously in hot water and then allowed to cool suddenly. This change is due to the physical properties of the wool fiber.

Such goods as beavers, kerseys, meltons, and fancy ca.s.simeres are seldom fulled more than one-sixth of their woven width, while worsted goods are shrunk but a small fraction of their woven width. The amount of fulling received is the distinguishing feature of many varieties of cloth. In the treatment of broadcloth, doeskin, and all nap finished woolens, the fulling is carried to a point where the fibers become densely matted, obliterating all traces of the weave and giving the cloth the appearance of felt.

=Crabbing.= After the cloth has been dried in the hydro extractor, where it throws off superfluous moisture, it must be stretched full width for the future finishing processes, and "set" at this width.

Crabbing consists of two operations, first the loosening process, then the setting process. Goods are run on a cylinder, then pa.s.sed over several rolls, and are kept tight so as to avoid wrinkles. The cylinders are immersed in hot water and the goods are allowed to rotate in this water for about twenty minutes, after which they are taken out for one or two hours. They are then returned to the machine for about twenty-five minutes and are subjected to boiling and also to additional pressure. The boiling water sets the fabric and the additional pressure gives the desired finish.

=Tentering.= The object of tentering[14] is to straighten and level the fabric. After the cloth leaves the tentering machine it has lost its natural moisture, and is not at all fitted, as far as fiber condition is concerned, for the napping. To bring it into a fit state for this operation it is pa.s.sed through a trough containing a brush which gives it the desired moisture. It is then ready for napping.

=Napping.= Most cloths at this stage of finishing are more or less unsightly on account of long and irregular fibers on the surface. A nap may be raised on the surface of a fabric for various reasons: in order to render the material warmer, softer, or more pleasant to the touch, as in the case of blankets and flannels intended to be worn next to the body; or for the purposes of increasing the durability of the fabric, as in the case of melton, kersey, broadcloth, and similar goods; or a nap may be raised with a view to removing all the fiber from the underlying structure in order to leave the pattern of the cloth well defined and free from hairiness. The covering of nap over the surface of the fabric tends to conceal many defects caused by imperfect yarns and faulty weaving. Coa.r.s.e, inferior yarns at best produce an unsightly fabric, but when the cloth constructed of such threads is finished with a fine, delicate nap the surface takes on a softer and richer appearance. Not only are the defects in the structure concealed, but the material is rendered more sightly and desirable and appears to be more expensive than it really is.

The operation of napping is performed by pa.s.sing the cloth in a tightly stretched condition over a revolving cylinder covered with teasels or steel hooks. These thousands of little hooks scratch the entire surface of the cloth, opening up the short fibers and covering the whole with a nap. Since the fibers are of different lengths it is necessary to brush the fabric vigorously and then pa.s.s it through the shearing machine in order to make an even and uniform length. The shearing machine acts on the principle of the lawn mower and either cuts the nap completely or leaves a pile surface. The cloth is cleaned by pa.s.sing through a brushing machine.

=Pressing Machine.= The fabric now requires consolidating and l.u.s.tering, or "smarting up" in appearance--practically pressing--before it is forwarded to the warehouse. This is done by pa.s.sing the cloth over a pressing roll heated to a high temperature. Having obtained a satisfactory l.u.s.ter, it is necessary to fix this by winding the cloth on rollers and allowing dry steam to pa.s.s through the piece. This fixes a permanent l.u.s.ter and finish on the piece and sets it so as to prevent shrinkage. The cloth is now packed and sent to the jobbers or tailors to be cut up into suits.

=Theories of Coloring in Textile Design.= The three primary elements of textile design are weave, combination of form, and blend of colors.

They enter either separately or in connection with each other into every species of loom effect. Weave relates specifically to the build or structure of the cloth and is an indispensable factor in any type of cloth. Schemes of weaves will produce in one operation an even and firm cloth, decorated with a type of pattern that usually consists of minute parts but which is p.r.o.nounced and decided in combination.

Combination of forms is a surface decoration obtained by uniting straight and curved lines. Color brightens and improves the qualities of the design. In fact, the discarding of color shades would diminish the elegance of the design and impoverish its appearance and would practically destroy the woolen industry. Whether the pattern be stripe, check, figure, or intermingled effect, it obtains its outline and detail from methods of coloring adopted. In worsted there is a larger diversity of weave design than in woolen; but still colors are very extensively employed to develop effects due to weave and form, and also to impart a cheerful and l.u.s.trous appearance to cloth.

Patterns in dress fabrics, shirtings, and other articles made entirely of cotton are frequently mere combinations of fancy shades, while fabrics composed of silk and jute materials, including silk ties, handkerchiefs, etc.--in fact the cloths in which fancy shades are used--show that coloring and its combinations in all woven product embellished with design, are elements which give tone and character to the styles. Though the cloth may be soft to the touch, substantially made, of uniform structure, and skilfully finished, yet a lack of brightness and elegance in coloring so powerfully detracts from the appearance of the pattern that these qualities alone are not sufficient.

On subjecting cotton, silk, wool, and worsted goods to inspection, color is found to have a different tone or cast in each fabric. Fancy colors in cotton, while decidedly firm and clear in effect, are non-l.u.s.trous, raw, and dull in toning. Silk colorings, on the contrary, possess both compactness and brilliancy; woolen colorings have a unique depth and saturation of hue characteristic of the material employed in the manufacture of woolen goods; while worsted colorings are bright, definite, and smart in appearance.

These differences are due to the physical properties of the several fibers. Thus a filament of silk is transparent and shines like smooth gla.s.s when light falls upon it; that of wool is solid and opaque in the center, but its exterior consists of a mult.i.tude of semi-transparent scales which, when of large dimensions and uniformly arranged--as in the best qualities of wool--reflect light with a small amount of dispersion and impart to the woven material a l.u.s.trous aspect. Cotton has no such partially transparent sheath. What light is reflected is so broken up that the color is poor. Compare three plain woven crimson textures made of silk, wool, and cotton respectively.

The first literally shines; l.u.s.ter, brilliance, and richness are the elements of its coloring. Though bright, it lacks that fulness and depth of color which belongs to the wool product, whose millions of filaments, closely compounded, all tinted alike, possess a peculiar bloom and weight of color not to be found either in the silk or cotton article. Lastly, take the crimson calico. How deficient in warmth and richness it seems to be, after examining the woolen and silk texture!

It is dull and has a raw and deficient character.

The various methods of employing fancy shades in patterns obtained in the loom may be briefly summarized:

I. In mixture cloths, for suitings, coatings, etc.

_a._ By combining or blending various colors of materials.

_b._ By combining several cla.s.ses of twist threads.

II. In plain, twilled, mat, and fancy weave designs for trouserings, coatings, suitings, jackets, dresses, costumes, flannels, shirtings, etc.

_a._ By introducing colors into the warp, forming stripes.

_b._ By introducing colors into the filling, producing spotted patterns.

_c._ By introducing colors into both warp and filling, giving checks, broken styles, etc.

III. In figured designs for dresses, vestings, etc.

_a._ By using one or several series of extra warp yarn.

_b._ By using one or several series of extra filling.

Dress goods fall naturally into two distinct cla.s.ses when regarded from the standpoint of fashion--staples and fancies. Staples are those fabrics which are made of the same construction year in and year out.

They vary only in coloring to meet the changes of fashion.

The Staples are:

Brilliantines, Sicilians, Mohairs, Imperial Serges, Storm Serge, Cheviots, Panamas, Batistes, Taffetas, Voile, Nun's Veiling, Cashmere, Shepherd Checks.

The Fancies are:

Produced through Variation of weave, Variation of color, Variation of color and weave: Brocades, Cuspettes, Meliores, Hopsacking, etc.

Coloring includes: Stripes, Checks, Plaids, Malenges, Mixtures.

Prior to the factory era our fathers and mothers made homespun clothes and wore them till they had pa.s.sed their period of usefulness. The average consumption of wool at that time averaged not more than three pounds per capita. As wealth increased the home loom and spinning-wheel were slowly supplanted by the mill and factory. The different textile manufacturers at length found that compet.i.tion was so keen that it was necessary to adulterate, particularly any fabric that was popular. The cla.s.ses of goods that are most adulterated are the expensive fabrics, those of wool and silk. There are such changes of fashion in dress at the present day that garments composed of materials formerly considered good enough are often thrown aside as old-fashioned when only half worn. Manufacturers cater to the whims and fancies of people and import to this country foreign styles. The rapidly changing styles cause people to throw upon the market a great amount of cast-off clothing only partially worn.

[Ill.u.s.tration: SALES DEPARTMENT OF THE SELLING AGENT OF A LARGE MILL]

The result is that there is not wool enough to provide the public with clothing made of new wool. The requirement per capita has risen to six pounds. The immense amount of fiber in cast-off clothing does not find its way into the paper mills, but rather into the shoddy mill, where it is remanufactured into cloth again, or where part of the fiber is mixed with good wool to make "pure wool" cloth. In other words, the rapidly changing styles of to-day and the limited supply of wool are responsible for the wholesale adulteration which is being practised in modern cloth manufacture. This adulteration furthermore is becoming more and more difficult to detect by reason of the rapid improvements made in the finishing processes of cloth manufacture.

Hence the necessity for people to know how and why adulteration occurs, how it affects prices, and what are the means of detecting it.

Shoddy is considered a legitimate adulteration in woolen and worsted goods. The following adulterations are not legitimate unless sold as such:

1. Cotton combed with wool.

2. Thin cotton threads twisted in with worsted during the process of drawing.

3. Cotton threads of the same color as the wool or worsted used as filling or warp.

4. Cotton veneered with wool.

5. Cotton threads of the same color as wool used in weaving.

FOOTNOTE:

[14] Tentering is carried on in the English mills.

CHAPTER VIII