JPH02118124A - Production of bulky spun yarn - Google Patents

Abstract

PURPOSE:To obtain the title spun yarn strongly and uniformly entwined by fiber and capable of providing cloth having soft feeling by spinning highly shrinkable fiber sliver into fine true counts and low shrinkable fiber sliver into thick true counts, joining the both together, taking up the yarn and then subjecting the yarn to heat treatment. CONSTITUTION:Slivers S1 and S3 of low shrinkable fiber F1 and slivers S2 and S4 of highly shrinkable fiber F2 are each fed to sliver guides 8a and 8b and drafted through a pair of back rollers 4a and 4b, middle rollers 5a and 5b and front rollers 6a and 6b of draft device 1. Then the slivers are introduced into a twist device 2, each introduced into air jet nozzles 12 and 13 of the twist device and the low shrinkable fiber slivers S1 and S3 are spun into yarn Y1 having thick true counts and highly shrinkable fiber slivers S2 and S4 are spun into yarn Y2 having fine true counts and the both is jointed together with a guide member 16 and wound through a deliver roller 19 onto a bobbin of winding device 3 as a binding spun yarn Y3 and then subjected to heat treatment to thermally shrink the highly shrinkable fiber and provide the aimed spun yarn.

Description

[Detailed description of the invention] Industrial application field 1 This defense relates to a method of manufacturing a bulky spun yarn.

K Conventional technology 1 Conventional bulky spun yarns are manufactured by various methods such as spinning fiber bundles with a ring spinning machine while giving a slight twist, but recently fiber bundles such as slivers have been introduced to draft manufacturing. A spinning device was developed in which the fiber bundle drafted by the draft device is introduced into a twisting device using an air injection nozzle to twist the fiber bundle and produce a spun yarn.
Therefore, it has become desirable to develop a method for obtaining bulky spun yarn using a process.

However, even if a bulky fiber bundle is introduced into such a spinning device, only yarn with poor bulkiness can be obtained.
It has been difficult to obtain bulky yarn that is bulky and flexible for apparel, and that provides a soft feel when made into cloth.

[51 Problems that Ming is trying to solve The object of the present invention is to obtain a method for producing a synthetic spun yarn.

1 Means for solving the problem 1 After draft manufacturing the sliver, by air jet /1
A method for producing a spun yarn in which the yarn is introduced into a zero-twisting device, the yarns spun by the twisting device are merged, the yarn is wound into a take-up device, and then the yarn is heat-treated. The yarn has low shrinkage! A 51 ffl sliver is spun into a thick yarn, the two are merged, and the spun yarn is wound up and heat treated to heat-shrink a single highly shrinkable fiber.

] The high-shrinkage fibers located at the center of the yarn shrink greatly through heat treatment, and the surrounding low-shrinkage fibers entwine with the high-shrinkage fibers more strongly and evenly, making the entire yarn extremely bulky. It becomes spun yarn.

r Implementation example 1 The embodiments of this invention will be described above with reference to the drawings.

FIG. 1 is a perspective view schematically showing an apparatus for carrying out the present Komei method, in which slivers S1. A heating device @2 using an air jet that heats the slivers S and S2 drafted by the draft device 1 and forms them into spun yarns Y and Y2, and the spun yarn Y1. Y
2 and a winding device 3 for merging the two together and winding them as a bundled spun yarn Y3.

The draft device 1 has a pair of back rollers 4a, 4b and a pair of middle rollers 5a, 5b whose circumferential speeds are set higher in order.
and a front roller pair 6a, 6b, and apron belts 7a, 7b are mounted on the middle roller pair 5a, 5b. 8a and 8b are slivers S1.8a and 8b supplied from the can. These are sliver guides placed in parallel to feed the S2 to the back rollers 4a, 4b. Further, 9 is a sliver separation guide provided between the pair of back rollers 4a, 4b and the pair of middle rollers 5a, 5b, which separates the slivers S, S2 inserted in parallel to the pair of back rollers 4a, 4b. . Guide blocks 10 and 11 are provided on the left and right sides of the separation guide 9, respectively, to restrict the spread of the two rows of slivers S, S2 separated by the separation guide 9 to the left and right.

Therefore, the two rows of slivers S, S2 separated at the separation guide 9 position are drafted while maintaining the two parallel rows at the subsequent middle roller pair 5a, 5b position and front roller pair 6a, 6b position. , added to the air injection nozzle 12.13 of the device 2. The twisting device 2 is a frame 14
Air injection nozzle 12.1 in housing 15 fixed to
3 are provided in parallel, each air injection nozzle 12
．． 13 has an IN function to independently heat the supplied slivers S, S, . . . and form them into spun yarns Y, Y2.

The twisting device 2 equipped with the air jet Q4 nozzle 12.13 is configured to twist the sliver S in a tangential direction within the passage of the sliver S formed around the central axis of the air jet nozzle 12.13, as shown in FIG. A plurality of air injection pores (not shown) for injecting air are provided, and the air injection pores are configured to form air flows swirling in mutually opposite directions in the directions of arrows A and B within the passage. ing.

Therefore, the spun yarns Y, Y, obtained by the above heating step 2
2 are then merged and doubled by the guide member 16.

17 is a spun yarn Y1. This is a separation guide to prevent the confluence point of Y2 from floating upstream or downstream along the yarn path, and is used to prevent the spun yarn Y1.Y2 from floating upstream or downstream along the yarn path. Prevent unevenness in the amount of entanglement between Y2s.

Reference numeral 18 denotes a cutter provided at the position of the guide member 16, and the cutter 18 detects yarn defects from the slab catch p20, which is provided in the middle of thread passing up and down to the winding device 3 via the delivery roller 19. Activated by a detection signal.

Reference numerals 21 and 22 are suction ports for dust such as threads and cotton, and 23 and 24 are suction pipes for air, respectively.

25 is the yarn Y1.25 spun from the air injection nozzle 12.13 at the start of spinning or splicing. This is a slack tube that sucks Y2 and prevents the thread from sagging.

The winding device 3 includes a bobbin supported by a known cradle arm 26, a friction roller 27 that rotates in contact with the bobbin (or package), and a traverse guide 2.
It consists of 8.

Next, a method of the present invention for producing a bulky spun yarn with excellent bulkiness using the above-described spinning apparatus will be described.

In carrying out the method of the present invention, first, a sliver S3 of the low shrinkage fiber F1 that can yield a yarn with a preset thick count, and a high shrinkage fiber S3 that can yield a yarn with a preset fine count. Prepare sorrel S4 of sexual fiber F2. As for the type of fiber, any type of fiber can be used as long as it has low shrinkage or high shrinkage, but low shrinkage acrylic 1II fiber and high shrinkage acrylic 18i#! The use of L is most preferred.

And these slivers S3. The sliver S4 is supplied to the sliver guides 8a and 8b shown in FIG. Two rows of slivers S3. pass and exit the front roller pair 6a, 6b. S4 is each given a desired draft and introduced into each air injection nozzle 12.13, and the thick spun yarns Y1.S4 are made of low shrinkage fibers. It is spun as a fine-count spun yarn Y2 made of high-shrinkage fibers, aligned and merged by the guide member 16, passed through the delivery roller 19, and wound onto the bobbin of the winding device 3 as a bundled spun yarn Y3, and packaged. It forms.

The bundled spun yarn Y3 obtained in this way is then transferred to a heat treatment step and is heat-treated, and the fine count high shrinkage fibers F2 in the spun yarn Y3 are collected with a high shrinkage rate, and the shrinkage force causes the thick count fibers to be compressed. The low-shrinkage fibers F1 are entangled with the surface of the fibers, preventing the fibers from slipping against each other, and the center of the yarn Y3 is made up of the high-shrinkage fibers F and the surface is made up of the low-shrinkage 41i fibers F1, making it bulky and flexible. I was able to obtain a bulky type with a lot of weight.

In the above embodiment, it was explained that two slivers were fed in parallel to the spindle spinning device, but one sliver was fed to each spindle and spun by the twisting device. The systems may be joined by a guide member.

Further, the guide member is not limited to the plate shape as shown in the figure, but may also be
It is possible to use a guide member having an arbitrary shape, such as a shape in which a thread passes between the pins of a book and joins together.

(Effect of the invention%) As described in detail above, this light is introduced into the air jet after drafting the sliver.
! In a method for producing spun yarn, in which the yarns spun by a device are merged and wound in a winding device, and the chain yarn is then heat-treated, a high-shrinkage 41i fiber sliver is mixed into a fine-count system, and a low-shrinkage m fiber is The sliver is spun into a thick yarn, the two are merged, and the wound spun yarn is heat-treated to heat-shrink the high-shrinkable M fibers. Shrinkable LIT fibers are greatly shrunk by heat treatment, and the thick, low-shrinkage 41 fibers that surround the surrounding surface entwine with the high-shrinkage AM even more strongly and thoroughly, forming an extremely bulky spun yarn as a whole. As a result, the conventional bulky spun yarn's! A spinning device that was not suitable for J-weaving, in other words, the fibers drafted by a draft device are introduced into a twisting device using an air jet nozzle to add twist and produce spun yarn, which creates a soft feel after weaving. It has now become possible to produce extremely flexible and bulky spun yarn that can yield fabrics of

[Brief explanation of the drawing]

FIG. 1 is a schematic side view of a spinning device for carrying out the method of the present invention;
FIG. 2 is a perspective view of essential parts of the air injection nozzle. s, s,, s2. s3゜Y, Y2...spun yarn. Fl: low shrinkage fiber. 1...Trough j-device. 3... Winding device. 8a, 8b...Sliver guide. 12, 13... Air injection nozzle 16... Guide member, 19... Delivery roller S4
...Sliver. Y3...bound spun yarn. F2...Highly contractile m-fiber. 2...Additional M device. Patent applicant Murata Machinery Co., Ltd.

Claims (1)

[Claims] 1. After drafting the sliver, it is introduced into a twisting device using an air jet, and the yarn spun by the twisting device is merged and wound into a winding device, after which the yarn is heat-treated. In this method, a high-shrinkage fiber sliver is spun into a fine-count yarn, a low-shrinkage fiber sliver is spun into a thick-count yarn, the two are merged, and the wound spun yarn is heat-treated to heat the high-shrinkage fiber. A method for producing bulky spun yarn characterized by shrinkage.