JPS60139840A - Fancy 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] <Industrial Application Field> The present invention provides a fancy yarn made of a composite of filament-processed yarn and short fibers, which has a novel appearance in woven or knitted fabric products and has excellent short fiber slippage resistance. It is related to.

<Prior art and its problems> Conventionally, short fiber bundles are interlaced with a false-twisted crimped yarn of thermoplastic synthetic fiber multifilament yarn with uniform fineness in the longitudinal direction of the yarn to form yarn unevenness, slabs, nep, etc. Processed yarns are well known and are disclosed, for example, in Japanese Patent Publications No. 17626/1983 and Japanese Patent Publication No. 12802/1982. However, in such conventional processed yarns, the so-called relatively uniform parts other than the slab part and the nep part are simply false-twisted and crimped parts, so that only an extremely monotonous visual effect can be obtained, which is beyond the realm of artificiality. It was something. Moreover, what was disclosed in Japanese Patent Publication No. 52-12802,
It has a structure in which short fiber bundles are wrapped around a single filament crimped yarn and the short fiber bundle is not actively held by the filament crimped yarn, so it is difficult to use in the weaving process or the product. When worn, the short fibers of the slab part may slip due to external effects such as friction or scratching, resulting in the so-called snagging phenomenon, or the slab part may suffer from partial pilling phenomenon. . On the other hand, what was disclosed in Japanese Patent Publication No. 51-17626 is
Since it has a structure in which short fiber bundles are attached to filament crimped yarn with an adhesive, it is possible to prevent the occurrence of snagging and pilling phenomena.
It has the disadvantage that it is hardened and lacks air content, giving the product a different feel and texture.

In order to eliminate the above-mentioned drawbacks, the present applicant previously disclosed in Japanese Patent Application No. 55-38476 a partial winding method in which two or more continuous multifilament yarns, at least one of which is made of thermoplastic synthetic fibers, are simultaneously false-twisted. We proposed a fancy yarn in which short fibers are sandwiched between shrunken yarn. This fancy yarn has a very fresh look in woven and knitted products,
The snagging phenomenon and pilling phenomenon hardly occurred, but between the time when each continuous multifilament yarn was fed out and twisted, a certain angle was set between the plane including the point where it was fed out and the point where it was twisted. Since the short fibers are fed and sandwiched between the continuous multifilament yarns, the short fibers are only held between the continuous filament yarns by the residual twist and do not get stuck to the winding of the continuous multifilament yarns. Therefore, when there is little residual twist in the crimped yarn,
In knitted fabric products where the binding force between yarns is weak, there remains the problem that prevention of short fibers from slipping off is insufficient.

In addition, the above-mentioned fancy yarns obtained by continuously supplying short fibers lack the effect of a null yarn, whereas those obtained by supplying short fibers intermittently do not have the effect of nulab yarns in areas other than the slab part. Since there is no entanglement of short fibers in the fabric, there is no entanglement of short fibers in any part of the yarn over the entire length of the yarn, and thus fabrics in which yarn portions without entanglement of short fibers are formed adjacent to each other. There was also a problem in that the appearance of the part did not look like short fibers were intertwined.

<Objective of the Invention> The present invention solves the above-mentioned problems, has excellent slip-off resistance of short fibers, provides a slab-like fancy effect, and
The purpose of this invention is to provide a fancy yarn in which short fibers are entangled over the entire length of the yarn.

<Structure of the Invention> That is, the present invention provides a multifilament yarn in which a plurality of multifilament yarns, at least one of which is made of a thermoplastic synthetic fiber, is simultaneously false-twisted, and short fibers are attached to the multifilament yarn, and the remaining fibers are removed by the false-twisting process. Composite plate twisted yarn in which the short fibers are sandwiched between multifilament yarns by twisting, wherein bundles of short fibers are intermittent in the longitudinal direction of the yarn in the form of knotted threads,
In addition, it is a fancy yarn characterized in that short fibers are substantially homogeneously entangled in portions other than the knotted portions.

The present invention will be explained in more detail below.

First, the fancy yarn of the present invention is made by simultaneously false-twisting a plurality of multifilament yarns, at least one of which is a thermoplastic synthetic fiber. This is a composite plate twisted yarn in which fibers are sandwiched between multifilament yarns. That is, in the fancy yarn of the present invention, it is essential that at least one of the multifilament yarns remains twisted, and therefore, at least one of the plurality of multifilament yarns must be made of thermoplastic synthetic fiber. be.

In the fancy yarn of the present invention, the short fibers are attached to the multifilament yarn, and the short fibers are held by the multifilament yarn due to the residual twist caused by the false twisting process. That is, in the fancy yarn of the present invention, as shown in FIG. (8) has a structure in which it is sandwiched between multifilament yarns due to the residual twist caused by the false twisting process. In this way, the short fibers are attached to the windings of one or both of the multifilament yarns constituting the simultaneous false-twisted yarn, and are held between the multifilament yarns, so that the short fibers simply is 1
It has a strong slip-off resistance of short fibers that cannot be obtained with a structure that is wrapped around a real filament yarn or a structure that is simply sandwiched between two groups of filament yarns.

In addition, if at least some of the filaments of the multifilament yarn made of thermoplastic synthetic fibers are fused, the shape fixing effect of the so-called normal twist due to stress relaxation of the thermoplastic multifilament yarn due to heat may occur. In addition, the effect of fixing the form of twist due to adhesion is multiplied by 41, so the twist density remaining in the yarn can be made much higher, and this residual twist allows short fibers to be formed between the multifilament yarns. It can be held even more firmly.

Next, in the fancy yarn of the present invention, short fiber bundles are present intermittently in the longitudinal direction of the yarn in the form of knotted threads, and the short fibers are substantially homogeneously intertwined in parts other than the knotted thread-like parts. It is something.

It is known from the appearance that the short fibers are entangled in a substantially homogeneous manner, but the short fibers are intertwined in a disjointed state, and the difference in fineness measured in 3 cm units is 50.
This refers to a state in which short fibers are intertwined to the extent that they do not exceed the degree of intertwining.

That is, as mentioned above, in the fancy yarn of the present invention, the partially crimped yarn has residual twist due to the false twisting process, so the portion where the short fiber bundle is sandwiched and entangled with the partially crimped yarn is
As shown in Figure 1-a, short fiber bundles exist in the form of knotted filaments,
It has a slab-like appearance, and even in the part where the short fibers are bundled and not entangled, there are ununtwisted, non-bulky parts where the twist in the false-twist heating direction remains, and the twist in the false-twist/untwist direction remains. In other words, after being untwisted to make it bulky, over-untwisted high parts which are further untwisted exist alternately and randomly, and short fibers are present in both of these parts as shown in FIG. As shown in Figure ○, since the yarns are substantially homogeneously entangled in the longitudinal direction, even when the short fibers are bundled and the unentangled portions are formed adjacent to each other, the appearance of the fabric is similar to that of the short fibers. The fibers appear to be intertwined over the entire surface, and the slab-like portion is... 111M will be clarified.

Even in areas other than slab-like areas where the short fibers are substantially homogeneously entangled, the multifilament yarns in these areas have natural irregularities in appearance due to the difference in bulk, as described above. Combined with the slab effect of the sandwiched and entangled short fiber bundles, it has an extremely fresh appearance.

The manufacturing principle of the fancy yarn of the present invention described above is, for example, in that two multifilament yarns, at least one of which includes a thermoplastic multifilament yarn, are fed to the same yarn feeding device with an interval maintained and subjected to simultaneous false twisting. At the supply side of the yarn feeding device, the short fiber braided yarn is moved obliquely to the hole axis in the nip portion between the nip points of the multifilament yarn and compressed air is supplied, while a suction action is performed on the inlet side; This is achieved by blowing the yarn by changing the amount of yarn fed from a supply device having a blowing action on the exit side.

FIG. 3 is a process schematic diagram showing an example of the manufacturing process of the fancy yarn of the present invention.
FB) is supplied to the yarn feeding roller (1) without being bundled and maintained at appropriate intervals, and guided to the heating area where it is heated. On the other hand, the roving (R8) made of short fibers passes through a yarn feeding roller (7) that rotates at variable speeds, and while supplying compressed air obliquely to the hole axis, it has a suction effect on the inlet side and a blowout effect on the outlet side. from the wind blowing nozzle (8) having a wind blowing nozzle (8) to the yarn feeding side of the yarn feeding roller (1), the nip point of the multifilament yarns (FA) and (FB). Air is blown to any nip in between. In this case, when the yarn feeding roller (1) of the short fiber braided yarn (R8) rotates at a low speed, the short fiber braided yarn (R8) is blown apart and blown in a free state, while the yarn feeding roller ( When 1) rotates intermittently at high speed, the short fiber roving (Rs) is blown to the nip portion in an intermittent east line state. The short fiber bundle sent out from the yarn feeding roller (1), or short fibers are multifilament yarns (Ii'A).
, (FB), or both of them.

In this way, multifilament yarn (FA).

(, FB) and the roving (R8) are twisted together by a false twist spindle /L/ (3), while the thermoplastic portion is heat-set by a heater (2), / After passing through (3), the twist that has been heat-set on the heating side is untwisted over the entire length of the yarn, and while being untwisted under a low tension that does not result in crimped bulky parts, it is wound through the take-up roller (4). The package (
6) is rolled up.

The thermoplastic multifilament l-based strip in the present invention is
Any material that can be false-twisted and crimped by simultaneous false-twisting with other yarns may be used, such as polyamide, polyester/L
Undrawn yarn, drawn yarn made of thermoplastic synthetic fibers such as The yarns may be different in the longitudinal direction or the cross-sectional direction, such as shrink mixed yarns or thick/fine yarns, or may be mixed yarns with non-thermoplastic fibers.

Further, the short fibers can be supplied in the form of fleece or short fiber bundles, and may be any type of fibers as long as they are not significantly altered by false twisting and do not interfere with fabric formation.
Any of natural fibers, regenerated fibers, synthetic fibers, semi-synthetic fibers, etc. may be used.

<Effects of the Invention> As described above, in the fancy yarn of the present invention, short fiber bundles are present intermittently in the longitudinal direction of the yarn in the form of knotted filaments, and short fibers are also substantially present in portions other than the knotted filament portions. Since the fibers are homogeneously intertwined, the appearance of the fabric obtained from this has a fancy slab-like effect with short fiber bundles intertwined, and also has the appearance of short fibers entangled over the entire surface. .

Moreover, even in areas where short fibers other than knot-like fibers are substantially homogeneously entangled, there are natural appearance irregularities due to the bulkiness of the filament yarns, which, together with the slab effect of entangled short fiber bundles, creates a real appearance. The invented fancy yarn has a very novel appearance pattern.

In addition, in the fancy yarn of the present invention, the short fibers are attached to the windings of the drawn multifilament yarns, and are also held between the multifilament yarns by the residual twist from the false twisting process. It has excellent short fiber slipping properties that are impossible to obtain.

Hereinafter, the present invention will be specifically explained using examples.

<Example> Two polyester multifilament yarns 150 denier/48 filament and cotton yarn 40 count short fiber roving 2
Using 70 gelen/30 yards (braid thread count 0.92),
According to the process shown in FIG. 3, the fancy yarn of the present invention was produced under the false twisting conditions and short fiber blowing conditions shown in Table XS1 and Table 2.

Table 1 Table 2 The obtained fancy yarn of the invention is 1.7' cm to 4
．． The length is 2cm, and the apparent outer diameter ratio of the other parts is 1.
Short fiber bundles of 0 to 20 times the size of the multifilament yarn were twisted and sandwiched around the multifilament yarn, giving it a slab-like appearance, and the short fibers were also dispersed in the longitudinal direction of the yarn in areas other than the slab portion. The yarn is uniformly intertwined in appearance, and the actual twist in the false twist direction in the longitudinal direction is 9 on average.
00T/M with a length of 2 mm to 10 twists, and the actual twist in the opposite direction with an average of 500'I'/M and a length of 8 mm.
- Over-twisted bulky parts with an apparent outer diameter ratio of 1.5 times the bulkiness at 30mm exist alternately and at random lengths,
It was a fancy yarn with a new appearance.

On the other hand, for comparison, the same two polyester multifilament yarns and short fiber rovings as above were used, and the short fibers were formed at the nip point and twisting point on the exit side of the yarn feeding roller under the short fiber blowing conditions shown in Table 3. A comparative textured yarn was produced in the same manner as described above, except that the short fiber rovings were blown to the twisting point at an angle of 60° to the plane of the yarn.

Table 3 The fancy yarn of the present invention and the comparative processed yarn were knitted on an 18 gauge knitting machine, and the appearance of the resulting plain knitted fabrics was compared. In contrast, the plain knitted fabric obtained from the fancy yarn of the present invention shows almost no entanglement of short fibers in the
The knitted fabric had an appearance in which short fibers were entangled over the entire surface.

In addition, we created an ICI method pilling tester and a Ketasunag tester with a saw blade placed in the cork box of this tester, and examined the slip resistance of the short fibers of both.
In both test methods, the fancy yarn of the present invention was superior to the comparative processed yarn in terms of surface 1 slippage by at least one grade.

[Brief explanation of the drawing]

Fig. 1 is a schematic diagram of the appearance of the fancy yarn of the present invention, Fig. 2 is an explanatory diagram schematically showing the intertwined state of short fibers of the fancy yarn of the present invention, and Fig. 3 is an example of the manufacturing process of the fancy yarn of the present invention. FIG. (1)... Yarn feeding roller, (2)... Heater,
(3)...false twisting spindle, (4)...take-up roller, (5)...take-up roller, (6)...package, (7)...yarn feeding roller, (8)... ... Air blow nozzle, (FA), (FB) ... Multifilament yarn,
(R8)...Short fiber roving. Patent Applicant: Unitika Co., Ltd. (Spontaneous) September 2G, 1981 1. Case Indication Patent Application 1982-249986 2. Name of the Invention: Fancy Yarn Mother ≠ 1F 3. Relationship with the case of the person making the amendment Patent Applicant Address: 1-50 Higashihonmachi, Amagasaki City, Hyogo Prefecture 541 Address: 4-68 Kitakyutabe-cho, Higashi-ku, Osaka Name: Yu
Nichika Co., Ltd. Patent Department Telephone: 06-281-52
58 (Dial-in) 4. In Column 5 of Detailed Description of the Invention in the Specification Subject to Amendment, Contents of Amendment, full specification, page 7, line 18, [i.e., as described above] is corrected to “also” do. (2) "Partially crimped yarn" on page 7, line 19 of the above is corrected to "crimped yarn."

Claims (1)

[Claims] 1. A plurality of multifilament yarns, at least one of which is a thermoplastic synthetic fiber, are simultaneously false-twisted. Short fibers are attached to the multifilament yarn, and residual twist from the false twisting process causes the short fibers to become multifilament yarns. Composite plate twisted processed yarn sandwiched between yarns, in which short fiber bundles exist intermittently in the longitudinal direction of the yarn in the form of knotted threads, and are substantially homogeneous in parts other than the knotted thread-like portions. A fancy yarn characterized by intertwining of short fibers.