JPS58104236A - Production of coated yarn - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for producing covered yarn from two short fiber rovings and one long fiber yarn using a ring spinning machine.

Conventionally, Kerr et al. used a ring spinning machine to produce coated yarn from below the front loaf.

The polyurethane elastic filament yarn is fed and merged with short fiber bundles drawn into a belt shape through a collector, and when extruded by a front loaf, the filament yarn is released from elongation and heated at the same time to form elastic short fibers. A method for manufacturing fiber-coated yarn (Japanese Patent Publication No. 14256/1973), or by supplying double roving to the draft zone, doubling each roving separately, and maintaining two separated rovings, and two rovings separated by 1. The fiber of Il! One synthetic fiber filament core yarn is supplied to each yarn under tension through a collector from above the front loaf, and each of the core yarns and the roving fiber yarn are mixed to form two left and right yarns. Two roving fiber yarns of equal amount on the left and right are sandwiched between the core yarns of the synthetic fiber fiber filament, and are spun into a shape 1. Immediately after exiting the front loaf, they are combined and twisted to create a zigzag structure. A method for obtaining core yarn (Japanese Patent Publication No. 5G-51221) is known. but.

In the former method, the synthetic fiber yarn serving as the core yarn is limited to elastic yarn.1 When spinning using ordinary synthetic fiber filament yarn, short fibers and fitment yarn are intertwisted and tI knitting is performed. However, under certain conditions (for example, when the mixture ratio of the coated part is about 90%), a coated yarn can be obtained, but in this case, only a yarn whose coated part easily peels off can be obtained. In addition, in the latter method, two synthetic fiber filament yarns are used and one Bing fiber yarn is sandwiched between them to prevent the coating fibers from peeling off. Spun Yarn - Supplying two roving fiber yarns and two synthetic fiber filament yarns to the spinning yarn requires very complicated installation of a supply device in a narrow space and spinning operations.

The object of the present invention is to provide a novel method for producing covered yarn that overcomes the above-mentioned drawbacks of the conventional methods for producing covered yarn. That is, two short fiber rovings are simultaneously supplied to the same back roller of a ring spinning machine, and a long fiber yarn is further supplied between the front loaf and the apron, so that the short fibers are spun from the front loaf. When manufacturing a coated yarn using two 7 wreaths of roving as a covering part and the long fiber yarn as a core part, the roving on the left side when viewed from the spindle side force is copied, and the roving on the right side is used as a covering part. (b) Fleece (a width (
Ifa) and fleece (bI) of roving (b).
For left-handed twisting, Wa≦wb; for right-handed twisting, Wa≧vb
, and the distance Q)) between the two is adjusted so that 1 hair D≦Wa+Wb, and the long fiber yarn (C
), center curl etc., and for left-handed twist, fleece (to the a side).

In addition, in the case of right twist, the fleece (b') lit is fed to offset positions within the range of 100 to 100 mm, and the fleece (a') and long fiber yarn (C) spun from the front loaf are fed to the fleece (b') lit. (The winding angles θa and θb at the respective confluence points of B and long fiber threads (C) are 57″~
67''''

The configuration of the present invention will be explained in detail below.

Figure 1 is a simplified perspective view 1 when the method of the present invention is implemented.
Figure g2 is a plan view of the main part in the case of left-handed twisting. As shown in Figure 1, in the batter-wo (8) of the ring spinning machine, the short fiber roving (b), which becomes the covering part, is on the left side when viewed from the spindle μ side, and the short fiber roving (b) is on the right side. ) are fed at the same time, the roving (rolling) coming out of the backloaf (B), and collectors (Kmua) and (xnb) are interposed between them to maintain the spacing, and the brake cloth is The flint loaf is then fed into the apron (6) while giving the flintloaf, and the main drift is then given between the apron (6) and the flint loaf. As shown in Figure 2, the collector (Kma) and (Km
By adjusting the convergence of b) and the spacing between the two, the width of the 7 lees of roving (rolling) passing through it (the convergence of a ri (Wa) and the 7 lees of roving (b) x (b') In the case of left-handed twist, (Wa) is shown in FIG. 2, and (Wa≦Wb, and in the case of right-handed twist, W&≧Wt).

The distance between the two (G)) is adjusted so that it becomes, and the long fiber yarn (C) that will become the core yarn is fed into the adjusted distance G)). In the case of left-handed twist, the supply position is a position offset within the range of 7 leases (a side - *) from the center of the special interval Q) shown in Figure 2, and in the case of right-handed twist. It is necessary to set the position offset from the center of the interval (9) to the side of the 7th wreath (bo) within the same range of fields.Then, as shown in Figure 1, the spinning from the front loaf (9) The released fleece (a') * (b') and long fiber yarn (C) are twisted together to form a covering yarn (7), which is wound around a woodwind inserted into a spindle. #take. In this case, by adjusting the number of rotations of the spindle A/(81) and the weight of the tofupefu, the fleece (al) spun from the front loaf (ladle) and the long fiber yarn (C) are connected to the confluence point (H&
), the winding angle (θ) and the fleece (bl
) and the long fibers (C1) are set so that the confluence point (the winding angle (e) when the yarns are combined with the decoy) is 37@ to 67@, respectively.

In the method of the present invention, during left-handed twisting, the long fiber yarn (C)
Supply position of fleece (&1) from the center of 1 interval G))
Spindle A by shifting within the range of -
' However, the left twist of the long fiber yarn (C) and the 7 leases (&) formed by Hb) than
Bring the front loaf closer to (7) and wind the fleece (7 leases (a) around the long fiber yarn (C) earlier than the fleece (b) to create a long fiber continuous yarn that will become the core yarn with the fleece (al). By setting Wa≦wb, the long fiber yarn (C
) can then be completely covered with fleece (b').

In addition, in the case of right-handed twisting, by setting the supply position of the long fiber yarn (C) to one side and the width of the fleece to the opposite conditions to those in the left-handed twisting, Similarly, it is possible to first cover the long fiber yarn (C) in the form of twisted yarn with the fleece (bl), and then completely cover it with the fleece (a') W-.

Also, in both left-handed and right-handed twists, the spacing)
must be L+Wm-(D≦L+lfm, but if D≦11-1-, covering will be poor even if other conditions are met, and only intertwisted yarn will be obtained, and if D>L+f. Then, even if other conditions are satisfied, fleece (a') + (b
The fibers are cut and become 9-speckled yarns, which eventually become unspunable.

In addition, the winding angles Oa and Wb are as described above (, 37-67
(It is necessary to adjust the yarn so that it is within the range of 57", but if k and 9 are smaller than 57", the bumping will be too large and there will be a lot of fuzz, and the coated part of the yarn will peel off and fall off after spinning.) Moreover, if θa and θb are larger than 6 doors, even if other conditions are met, poor covering will occur and the yarn will become twisted, making it impossible to obtain a good covered yarn.

In addition, as a reference photograph, a cross-sectional photograph of a covered yarn produced by the method of the present invention is shown.
This shows that the shoulder circumference is well covered with short fibers (fab).

As described above, in the method for manufacturing covered yarn according to the present invention, a long fiber yarn to be a core yarn is first covered with one short fiber freeze in the form of a twisted yarn, and then this is coated with one short fiber of the pond. Since it is sufficiently and firmly coated with fiber fleece, it is extremely strong and will not peel or fall off. This is a novel and useful method for producing covered yarn that can be produced from high-quality covered yarn.

The present invention will be further explained below with reference to Examples.

Example 1 As shown in Figs. 1 and 2, 60'8 cotton roving (rolled) for blended cotton (rolled) in back loaf (B), (b) two (same gelef 18 (X/30Yd)), spun μ As seen from the side, the roving (a) is supplied on the left side and the roving yarn 1b is on the right side for drafting, and as shown in Fig. 2, the collectors (Km &) and (Kab) are used to draw 7 leases (a6) of convergence ( Wa) and fleece (width of b (shame), both WazWbml, 5 mist 1 interval between both)]) - 1, Q all Adjust 9 intervals ■) from the center of fleece (a) towards D-
ヰ0.2 Insert the front roller (zvz 5PA'lμ typhilament thread (C) from the top of the fishing machine part into the lopsided position)
(50d/24f) was supplied. Then, the fleece ω) and (b・) spun from the front loaf ff') are θ
Wind around the polyester filament yarn (C) with a winding angle of az55', θb-53'' (left twist) Efi
l/C34/66 (blending ratio), B56+l! A coated yarn of I was obtained.

The knitting properties of the coated yarn were investigated using cotton jersey, and even when treated with the sinker of the 9-knitting machine, there was no problem such as the cotton in the W1 covering peeling off (it could be knitted). In addition, when the physical properties of the knitted fabric 1 were investigated, results were obtained that the dimensional stability was good and the bursting strength was high, and the results obtained using the filament yarn were good.

*Example 2 Back loaf), 40" cotton roving for blended cotton (roll),
(b) 2 pieces (same grain 1120 k/l0 Yd),
Spindo! When viewed from the side, feed the roving yarn (-) on the side with physical force, and the roving yarn (b) on the right side, and make the fleece (a”) * (b
') width is Wa x m Wb x 2.00-9li Adjust the interval so that the interval between the two is D -1.
from the center to free x (a')"--o, g M
In a lopsided position, front loaf CF) 1 from the rear upper part
9 SDE-MA-CHIFIFUMEN) A article (C) (7 supply couple f) is supplied, fleece (a@) and fleece (b')
With a winding angle of 0a-54" and #b-51@, wind the polyester filament yarn (q (left twist) e Ifil/C・42158 (blending ratio),
A 30" coated yarn was obtained.

As a result of carrying out the same investigation as in Example 1 regarding this covered yarn, it was possible to knit it without causing any problems such as the cotton in the covered portion peeling off or falling off due to a V-linker or the like.

Further, when the physical properties of the 9 knitted fabrics were investigated, the results were that the 1-dimensional stability was good and the bursting strength was high, and the effects of using filament yarns were seen, which was good.

[Brief explanation of drawings]

FIG. 1 is a perspective view schematically showing the case in which the method of the present invention is being carried out, FIG. 2 is a plan view of the main part of FIG. It is a cross-sectional photograph of the covered yarn. (IL), (b) - roving, (&l), (b leaf leaf, (C) - long fiber yarn, (Y) - covered yarn, (
Fishing - front roller, (B) - pack roller, ■
) - Apron Patent Applicant Unitika Co., Ltd. Gin 1 Day C4 Calculation 2-1! ] Procedural amendment form c) 1. Case display pending No. 1982-200482 2. Name of the invention Method for manufacturing coated yarn 3. Person making the amendment Relationship with the case Patent applicant Jukuzu 1-501 Higashihonmachi, Amagasaki City ) Address 541 Address 4-68 Kitakyutabe-cho, Higashi-ku, Osaka-shi, 6th name
Unitika Co., Ltd. Patent Department Phone: 01281 + 5258 (Dial-in) Table On date 6 of the amendment order, lines 5 to 8 on page 12 of the statement of contents of the amendment are amended as follows. ``FIG. 1 is a perspective view schematically showing a case where the method of the present invention is implemented, and FIG. 2 is a plan view of the main part of FIG. 1.''

Claims (1)

[Claims] (1) Two short fiber rovings of the same back lobe IC of a ring spinning machine are simultaneously fed, and the short fiber rovings are fed between the front loaf and apron (long fiber yarn is fed, and the short fiber roving is fed between the front loaf and the apron). Covering part with 7 wreaths of fiber roving 02 wood,
When manufacturing the 61 yarn as the long fiber core, the roving on the left side when viewed from the spindle A/1ll is -)
, when the right roving is (b). Width (lla) of fleece (a') of coarse A (a) and 7 leases of roving (b) between front loaf and apron (
bl) width (Wa≦Wb in the case of left-handed twisting, Wa≧wb in the case of right-handed twisting, and the distance (D) between the two is W
a + Wb − (adjusted so that D≦Wa + Wb, and at this interval), insert the long fiber yarn (C
), center car et al., fleece (a') for left-handed twist I
Go to I. In the case of right-handed twisting, the fleece (L') and long fiber yarn (C) spun from the p-tloaf (supplied to the b side, each at a biased position within the range of -), and the fleece A method for manufacturing a covered yarn, characterized in that the winding angles Oa and θb#tsy@~67° are set at the respective confluence points of (b.) and the long fiber yarn (Q.