FR2476152A1 - ORNAMENTAL WIRE WITH SEVERAL BUTTS - Google Patents

Abstract

A SINGLE ORNAMENTAL THREAD SHALL BE OF THE TYPE ACCORDING TO WHICH ONE OF THE ENDS SHOWS ALTERNATIONS OF THICK AND THIN PASSAGES THROUGHOUT ITS LENGTH AND EACH END OF WHICH IS UNIFORMELY DYED, PIGMENT OR TEIGNABLE IN A COLOR DIFFERENT FROM THAT OF THE OTHERS; IT IS CONSISTED OF THE ASSEMBLY OF TWO OR MORE BUTTONS EACH PRESENTING ALTERNATIVES OF THICK AND THIN PASSAGES THROUGHOUT THEIR LENGTH, THESE PASSAGES BEING ALLOCATED REGULARLY OR RANDOMLY.

Description

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  The present invention relates to an ornamental thread and in particular a thread with several ends obtained from yarns

  of fibers and intended for use in ornate fabrics

mental. The invention relates more particularly to threads making it possible to obtain an "obsolete" effect resulting from a variable contrasting appearance between different colors over the entire length of the threads and which communicates a pleasant appearance to tapestries, carpets and other pile fabrics.

cut obtained from said wire.

  Until now, such an effect has only been obtained from yarns from yarns of fibers which have

  been dyed variably over their entire length.

US Patent 3,205,648 to Lohrke describes a textile yarn

  which has irre-

fun and interesting. The yarn has two components in a contrasting color. One of the components is a yarn of fibers, the fibers of which are uniformly distributed over the entire length of the yarn; the second component is a yarn whose fibers are irregularly distributed, this

  which allows to obtain wide and narrow sections ir-

  evenly distributed over the length. The fibers in these sections are either pre-dyed or have a different color affinity and are over-dyed.

  during a dyeing operation following spinning.

In US patent 2,271,184 to Dreyfus, a

  yarn in which cut fibers are combined,

  with clear physical characteristics

  very different, this in order to facilitate spinning.

  These are cut fibers of irregular length and

of uniform titer combined with cut fibers present

  both thick and thin parts along their length, but a yarn is also described in which the two types of cut fibers have variations in thickness. These cut fibers may include suitable effect materials such as pigments, dyes or the like, but this patent does not suggest

2476 152

using more than one color and it's nowhere

question of contrasting colors.

  US Patent 4,155,214 to Mirhej deals with a twistless thread intended to supply a texturing device and which consists of drawn thermoplastic filaments of practically constant titer. We combine two groups of filaments of contrasting color, or of different dye affinity and slightly different melting points and

the thread obtained is then subjected to a texturing operation.

  ration by false twist. The yarn obtained makes it possible to obtain a fabric having a heather effect with high contrast, with

  little or no directional orientation.

  The apparatus and method described in US Pat. No. 3,110,059 to Tallis et al make it possible to obtain a continuous artificial thread into which are introduced, during the process of extruding a first filament, thicker periodic passages called "buttons". According to this patent, these buttons, which have a title higher than the rest of the thread, can be formed from material dyed in a different color, which gives a finished thread having both an irregular title and intermittent variations.

of color.

US Patents 3,425,206 to Holton, 4,026,098 to Bosley and 4,084,622 to Nakagava et al describe continuous yarns showing variations in color, but are all lighter or darker variations

a basic color.

The present invention relates to an ornamental thread with several ends comprising two or more ends of fiber yarns, each of these ends having along its length thick and thin passages, regularly or irregularly distributed and each of these ends being uniformly dyed, pigmented or dyeable in a color that is different from that of each of the other yarns

fibers in the thread with several ends.

The ornamental thread according to the present invention makes it possible to obtain fabrics with an obsolete coloristic effect in

starting from cut fibers, uniformly colored or dyed

  gnables. This coloristic effect brings into play an irre-

  gulier of three shades obtained by the variations in the thread of two contrasting colors. This results in a particularly attractive effect when using threads of this type in velvet upholstery,

carpets or other cut pile fabrics.

The invention therefore relates to a wire applicable for this purpose, obtained from fibers cut uniformly

colored or dyeable.

  The present invention will be better understood moreover

  and its advantages will emerge clearly from the description which

  follows the reference to the attached schematic drawing in which

Fig. 1 and Fig. 2 are views in longitudinal section for-

  greatly enlarged by two yarns of elementary fibers according to the present invention, showing the alternation of thick parts and thin parts along the length of the yarn. Fig. 3 is a view in longitudinal section strongly

  enlarged with an ornamental thread with several ends according to the

vention, from the assembly of the yarns represented

in Figures 1 and 2.

FIGS. 4 A, 4 B, 4 C, 4D, represent cross sections respectively along 4 A-4 A, 4 B-4 B, 4 C-4 C and 4 D-4 D of FIG. 3 and show the variations in relative thickness of each end on the

length of the ornamental thread according to the present invention.

  Fig. 5 shows the rear drawing roller of a modified spindle bench, so as to obtain the

alternately thin and thick parts of the wick.

  The multi-ended wire according to the invention, which pre-

  feels the effects of color variations over its entire length

  gueur, is prepared by assembling at least two different elementary son which each have thin and thick portions arranged alternately in a regular or irregular manner along their length, each being

in the assembled yarn of a different color from the other.

2 4 7 6 15 2

This difference in color is obtained by assembling two or more elementary wires which have been individually

  pre-colored in a clean color by pigmentation or dye

ture, in flock or in the mass or by assembling two or more elementary threads not colored which present

  each with a different dye affinity, then in tei-

embarrassing the assembled thread before or after obtaining the fabric from the thread. When such threads with multiple ends are used for the manufacture of fabrics, the fabrics obtained 11 have a very attractive visual appearance. It is estimated that the ornamental effect obtained with the thread according to the present invention is the best when the thread has two ends.

contrasting yarn, which creates the three-

  colors "obsolete" sought. The present invention is not however limited to the assembly of two ends of elementary yarns and it is possible to assemble a greater number of yarns of different coloring in the case where it is desired to obtain a different effect. Each elementary yarn of the ornamental yarn assembled according to the present invention

contains cut fibers, of natural or syn-

  aesthetic, uniformly pigmented or dyed. These fibers are subjected to a preparation preparation by drawing according to well known techniques; the ribbon consisting of cut fibers is stretched in a wick. In the normal preparation process, this wick is of uniform thickness; according to the invention, it is at this stage that the thickness variations are introduced. A method to arrive

to this result consists of a slight change in the ele-

  stretching ment, for example, by cutting one or more grooves or partial notches in the rear roller of the stretching element. This will cause alternate engagement and disengagement of the breaker stretch. During

  of walking we will then obtain a wick presenting alter-

natively thick and thin parts which, in spinning,

  will result in a predetermined variation in thickness

  of the elementary yarns. Any variation in the length

  gorges or in their radial position on the road

  the rear water of the stretching element will change the

  relative positions of the thick and thin parts of the wire. We

may use other methods for disengagement

of the stretching of the breaker. One can, for example, introduce clutches or cams on the stretching element of the breaker. We could use a clutch to

introduce thickness variations of a random nature.

  However, these are methods requiring additional mechanical operations and it is believed that the preferred method of producing the wire according to the invention is the

grooved roller.

In the stretching element of the breaker shown in FIG. 5, two partial grooves are shown which allow disengagement of the drawing of the breaker. The grooves are formed in the roll by cutting, in a known manner

in itself.

It should be made clear that any other geometrical arrangement can be adopted for the drawing roller, including an increased number of grooves, and these changes will modify the lengths of the thick and thin passings of

the wick.

  Elementary yarns prepared as described above, but having differences, either in their coloring or in their dye affinity, are twisted together by conventional methods in order to obtain the yarn

ornamental according to the present invention.

  The present invention will moreover be better understood.

using the following examples.

Example 1

A ribbon of average weight of 4.46 g / meter is prepared from polypropylene fibers sold under the brand HERCULON, Type 136, pigmented in Brown 638, 2.8 dtex per filament and 47.62 mm long and drawn on a G 10 Whittin moving bench, the element's rear roller

  drawing working at 3.35 m / minute, the roller inter-

  middle at 6.14 m / minute and the front roller at 27.95 m / min

nute. Two grooves are arranged by cutting in the rear roller of the stretching element so that in the two 19.05 mm x 19.05 mm passages around the entire perimeter (109.67 mm) of the roller, the ribbon is not subject to the full stretch tension. In this way, the total stretch is maintained at 8 times when the ribbon is in contact with the feed roller, but

  is reduced to 4.55 times when the ribbon is no longer in contact.

The ribbon thus stretched has an average dimension of 0.9 ribbon number (1525 m / kg). About 65% of the length has thin passages (ribbon number 1.05) (1779 m / kg) and the remaining 35% have thick passages of ribbon number 0.6 (1027 m / kg). These passages are found in the wick according to the following diagram: a thin passage of approximately

33.52 cm and a thick passage of about 10.16 cm.

  This wire is then stretched and twisted on a Roberts ARROW SS-1 ring twister so that it is given a Z twist of 67 turns per meter, while stretching the wire

up to an average titer of 20/1 (cotton titer).

  A similar yarn is prepared from polypropylene fibers sold under the brand HERCULON, Type 136, pigmented in Beige 606, with the same title. The two sons

  are assembled on a ring twister for communication

  at the assembly a torsion S of 31.49 turns per meter.

The wire obtained has a very attractive appearance with variations in color intensity over lengths of 94 meters ranging

  from predominant brown to predominant beige.

  The assembled yarn is then woven to prepare a fabric for furnishing in velvet cut with a pile yarn weighing 195 g / m2. This fabric is woven on a classic double plush loom, with a comb width of 147 cm, a total number of ends of pile of 1,200 and a

  8 O: 1 supercharging ratio of hairs.

  texture of the fabric was as follows: 16 scraps per cm of

back chain, 8 ends per cm of pile and 12 hairs per cm.

The fabric obtained had the desired "obsolete" effect.

Example 2

  A yarn varying in title from 13.912 (cotton number) to 22.512 (cotton number) over a length of 940 cm is prepared by the method described in Example 1, with 3 denier nylon fibers being one of the elementary yarns. per filament and 47.62 am long, and for the other the HERCULON Type 136 polypropylene fibers pigmented in Beige 606 described in Example 1. After twisting, the

yarn is woven into a velvet as described in Example 1.

  The fabric is then dyed with standard acid dyes.

  sics to color the nylon in celery green. The fabric

  obtained has the desired "obsolete" effect.

Example 3

A nylon thread is prepared by the method of Example 1 from 3 denier nylon fibers per filament and 47.62 mm long. An acrylic yarn is prepared in the same way from fibers of 3 denier per filament and 47.62 mm long. Nylon and acrylic threads are

  assembled and woven into a velvet as described in example

  ple 1. The fabric is then dyed with a combination of conventional acid and basic dyes, according to a known method. The nylon thread is dyed in dark red and the acrylic thread in black and the fabric obtained has the desired "obsolete" effect.

Claims (1)

CLAIM - Ornamental multi-end thread of the type according to which one of the ends has alternating thick and thin passages throughout its length and each end of which is uniformly dyed, pigmented or dyeable in a color different from that of the others ends, characterized in that it consists of the assembly   two or more ends, each with alternating thick and thin passages throughout their length, these passages being distributed evenly either randomly or randomly.