DE1685678A1 - Process for the production of fancy threads - Google Patents

Description

The production of elastic textured textile yarns by temporarily turning up thermoplastic multifilament yarns using a false twist device and heat fixation when turned up is "well known" As a rule, a yarn that was temporarily turned up in the Z-direction is paired with a yarn that was temporarily turned up in S-direction to a double thread. In this way a Obtained yarn whose internal tension is balanced There is also a method known, according to which that yarn, which in the initial twist opposite direction of rotation is temporarily turned up above the Hullpunkt, a slightly

BATH ORIGINAL

1098427 1351 .-- 2 -

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higher rotation is granted than that in the direction of the Output twist temporarily upturned yarn, and both yarns are fixed at the same temperature «. In this way it is achieved that both yarns one equal tensile strength and the thread has an increased elasticity <>

It has now been shown, surprisingly, that when used a similar method, but in one Direction of rotation temporarily twisted yarn is given a much higher twist than that in the other direction of rotation twisted yarn, fantasy yarns one of them Component knot or loop formation shows can be obtained, which is the achievement of fashionably interesting Boucle-like or terry-like effects in the case of them «Y'irk, knitted and woven goods enable»

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The subject of the invention is accordingly a process for the production of fantasy threads, one component of which Knots or looping shows, by temporarily twisting thermoplastic multifilament yarns and Heat fixation in the twisted state, and union of two individual yarns obtained in this way to form a thread that is characterized in that the two individual yarns in opposite directions of rotation to at least 3oo Tours / meters differing rotations temporarily

1 "0 9 8 A 2/1 3 B 1

BATH ORIGINAL

twisted v / earthed. ”The twists of the two yarns can ZoB .. differ by 4oo - 800 tours / kilometer, whereby the Heat fixation of the "two yarns" with the same or "up to can take place at 10 ° G differing temperature «.

With threads produced in this way, for example, knitwear and knitwear with boucle-like effects can be produced 2o - 5o ° G or more different temperatures can take place »With threads produced in this way, knitted and knitted goods with thread-like effects can be obtained.

The OF INVENTION & ungsgemässe method can be carried out with a conventional false-twisting device for texturing textile yarns * The coming from the supply bobbin t

Multifilaments can successively pass a first _{thread conveyor device, z * 3 o} a 7 / roller pair "or a jalette, a heating device, the twist generator of the Falscliswirnvorrichtung, whose number of revolutions corresponds to the required number of turns / m of the yarn and a second thread conveyor device and then to Winder arrive »

109842/1 351

A hot air duct can be used as the heating device, e.g. a box, inside of which electrical heating coils are arranged for heating the air. It can also be used devices in which the heat fixation of the twisted yarn by Contact with a heated surface preferably one Metal surface takes place. .

The method according to the invention is particularly suitable for producing fancy threads from multifilaments made of thermoplastic synthetic material, especially polyamides, ZoBo polyhexamethylene adipamide (polyamide 66) or condensates of epsilon-aminocaproic acid or 11-aminoundecanoic acid (polyamide 6) or polyesters (polyethylene glycol terephthalate), Material based on vinyl (polyacrylonitrile) or polyolefins, also made of gelulose acetate ■

The method according to the invention is based on the following some embodiments explained in more detail.

Example Λ "- ■ - ■

A multi-filament yarn made from Wylon 66 (polyhexamethylene adipamide) 1oo den, consisting of- p4 single filaments with trilobal ■. "" cross section, which has an output rotation of "1 $ - 2ö T / m ζ

10 9 8 4.2 / 1 3 6 1 ^BATH O.

is temporarily turned up to 25oo T / m ζ by means of a false twisting device and exposed to the action of hot air at 225 0 in the turned up state for 0.9 seconds about 2% suffers. Thereafter, an equal yarn is subjected to false twist via the addition of Mullpunkt 16oo T / S m and subjected to the action of hot air at 235 ° C in hochgedrehtem state during 1 sec T ",, which is also about 2% shrinkage. the two multifilament yarns thus obtained are twisted with 6o T / m S, where the at 16oo T / m turned component node or · showing temporarily loop formation, while the other component has the character of a normal Falscndyalljcräuselgarnes * the fantasy twisting obtained is suitable Excellent for the production of knitted products with boucle-like effects for outerwear.

For comparison, two identical yarns were used under otherwise same conditions according to the known method mentioned in the introduction for increasing the Elasticity of crimped threads, a false twist of 237o T / m ζ or 25o3 T / m s, while

10984271351 _ ₆ - ORIGINAL BATHROOM

0.9 sec. Of heat setting "at 23o ° G and twisted at 60 T / m S, although no fancy thread in the sense of the present process, but a common thread was obtained, which is due to the fact that the difference the number of twists of 133 T / ia given to the two yarns is too low ο

Further examples of the invention are illustrated in the following table

- 7 -1098 42/1351

ORIGINAL INSPECTED

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Claims (3)

ir at e nt to s p r ü c lie: 1.) Process for the production of fantasy twists, one component of which is knot or loop formation shows by temporarily twisting thermoplastic multifilament yarns and heat setting in the twisted state and union ... of two individual yarns obtained in this way into one Twine, characterized in that the two individual yarns rotate in opposite directions to be temporarily rotated on rotations differing by at least 300 revs / meter 2o) Method according to claim 1, characterized in that that the twists temporarily given to the two individual yarns by 4,000 - 8,000 turns / meter 3.) Method according to claim 2, characterized in that that the two individual yarns in the twisted state are subjected to the Eitzefixierung at the same temperature be o 4c) Method according to claim 2, characterized in that that the two single yarns in the twisted state at temperatures of up to 10 ° C differing To be subjected to heat fixation " 109842/135 1 - 9 - 5o) procedure according to. Claim 2, characterized in that that the "two single yarns temporarily granted Rotations differ by 1ooo - 2ooo T / m «, Go) Method according to claim 5j, characterized in that that the "two single yarns in the twisted state" at temperatures of the To be subjected to heat fixation » 109842/1351