JPS58220833A - Air spun 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 an air-spun yarn having a novel appearance produced by air-spinning using a rotor.

Conventionally, raw fiber bundles are once separated into individual fibers and then refocused into a band on the inner peripheral surface of a nine-rotation spinning chamber (rotor)2.
Next, it is heated by the rotation of the rotor and taken over. Various two-taper air spinning systems have been proposed. Also q
- In single-type air spinning, numerous technical improvements have been made to spin uniform yarns. For example, in order to reduce the binding of fibers on the yarn surface, which is one of the drawbacks of rotor Takefu kise spun yarn, the rotor has seven holes (shi-'-) removed to reduce the fiber bundles within the °-tar gate. 9. In order to prevent the appearance of the yarn from being distorted or toned due to the selection of tightly bundled fibers, shrinkage fibers are not included.

On the other hand, compared to conventional ring-spun traps, little effort has been made to limit the range of fibers used and create a spun yarn with an attractive appearance.

The present inventors focused on the principle of 50-tater air spinning, investigated the combination of fiber types that had not been considered in the past, and further completed a new air-spun yarn by utilizing various phenomena of this spinning method. It is.

In other words, the gist of the present invention is to provide a spun yarn formed by a one-rotor air spinning method, and at least two
The first type has a water shrinkage rate of 5cm or less, accounts for 30cm or more of the entire spun yarn, has a random fiber length distribution, and has a fiber length of D to 1.5D [however, D is 5 to 20 fibers of the diameter of the converging part of the rotor are spun into the entire yarn.
%, and the fiber length of the remaining fibers is D or less, and other types have fiber lengths of D or less, occupying 70% or less of the entire spun yarn, and having a water shrinkage rate of 10 to 20 inches. The air spun yarn is characterized in that it contains 20 to 60% of the total spun yarn, and the remaining fiber has a water shrinkage rate of 5% or less.

The present invention will be explained in more detail below with reference to the drawings.
The figure is an example of a staple diagram of the fibers constituting the spun yarn of the present invention, and in the figure, one stone is equal to the diameter of the focusing surface of the needle.

! , is 1.5 times the stomach diameter.

(2) indicates the proportion of the weight distribution of fibers having fiber lengths of -e1 to -e; 1 The present invention requires 5% to 20%. Conventionally, in the spinning method using a hollow rotor, the fiber length is within the diameter of the rotor in order to achieve uniform spinning with little fuzz and to reduce the frequency that some of the fibers form a bundle along the longitudinal direction of the spun yarn. It was particularly important to On the other hand, because the type of fibers used is so limited, the yarn form is not attractive and its uses are limited.

In order to provide a woolen yarn or a worsted light-toned air-spun yarn, the present invention was made by various studies on the stability diagram and the shrinkability of the fibers used. So first of all,
To explain the fiber length distribution, as mentioned above, by mixing the fibers f*s having a relatively long fiber length from J
Frequency: ・□, increases, and the so-called hook fibers (2), in which long fibers with a length of 5 are separated during spinning by a spinning method that uses a two-rotation rotor and twisted while being bent while being transported in the air, As a result, the yarn surface of the spun yarn is disturbed due to the increase in the tightening portion (1).

Furthermore, since the hook fibers (2) are increased, the spun yarn as a whole has a bulky structure, and an air-spun yarn with a worsted light tone made of woolen yarn or coarse wool can be obtained.

The reason why we set the fiber length of 11 to 20% is that when it is 5 qb or less, the frequency of the bundled part (1) is low and the number of hook fibers (2) is also small (there is no difference □ from the conventional product,
In addition, if fibers of 2096 or more (from 1 stone) are mixed, when peeling the focused fiber bundle from the focusing surface of the rotor, the peeling tension will be too large (acting on the fiber bundle), causing yarn breakage, and the spinning will be interrupted. This is because the fibers of 1.
By mixing 5% or more and 20 or less, it becomes possible to produce air-spun yarn with fewer twists than conventional products.

Furthermore, the reason why the overall distribution is random is that short fibers are included, which improves the fluffing effect and fiber splitting effect, and improves the spinnability.

Next, the shrinkable fibers constituting the spun yarn 'Ik' of the present invention will be explained.

20% to 60% of the fibers of the spun yarn of the present invention have a water shrinkage rate of lO to 20% and a fiber length of D or less.

If the content of the high shrinkage fibers is less than 20%, the shrinkage ability cannot be exhibited and the bulkiness is insufficient.If 60 or more fibers are mixed, the tightening part will be further accentuated by the shrinkage action inside the yarn, and the feel will be rough and hard. I end up. Also, if the water production shrinkage rate is less than 10%, it will not be bulky enough, and if it is more than 20%, the texture will be rough and hard.

The reason why low-shrinkage fibers of 5% or less are used for relatively long fibers with fiber lengths of D-1 and 5D is because the fibers constitute the binding part.If the fibers have high shrinkage, the binding part becomes strong, This is because the fibers constituting the yarn lose their free movement and become coarse and hard.All textile raw materials can be used in the present invention, and the mixture of them may be selected as appropriate depending on the intended use.

In the present invention, wool or animal hair is used as the fiber containing relatively long fibers with a fiber length of D to 1.5D, and high bulk cotton or conjugate cotton of synthetic fibers such as acrylic is used as the fiber containing high shrinkage fibers. Particularly favorable results are obtained.

Example 1 Merino wool (60"5) cut into slivers so that the longest fiber is 65ii, 30% acrylic fiber with a water production shrinkage rate of 15L, 2dX38ha,
Blended with 40% 2d x 38 acrylic fiber with a water production shrinkage rate of 4%, 1. After going through the normal pre-spinning process, the fl was 11% and the fiber length distribution was completely random.
．． A sliver of 517 m and a yarn of 20 m in count were spun using an air spinning machine with a single hollow rotor, which was then supplied with a combing roller for opening.

The spinning conditions in this case were as follows: rotor diameter: 45 mm, rotor rotation speed: 3000 Or, p, m, combing roller rotation speed: 6000 r, p, m, draft: 50 times, and spinning speed: 71 m/min.

The resulting thread is dyed and made into a round garlic chassis.
The product has a wool-like appearance and feel.Example 2 40% lamb wool cut into slivers so that the longest fiber is 60 fins, water shrinkage rate 18%, 2dX
A blend of 50% 44mm acrylic conjugate fiber, 4% water shrinkage rate, and 10 pieces of 2dX44 acrylic fiber, which was passed through a normal pre-spinning process to show an overall random fiber length distribution with f of 8qIb. A sliver with a mesh size of 2.517 m was formed, and a 24 m-count yarn was spun using a hollow rotor-equipped air spinning machine that opened and supplied the fibers with a combing roller at 'vc'. The spinning conditions in this case are a rotor diameter of 45 mm and a rotor rotation speed of 3000 or
, p6m t Combing roller - rotation speed 600
Or, p, m, draft 60x.

The spinning speed was set at 68 ii minutes.

When the obtained yarn was dyed and made into a circular knitted chassis, the result was an excellent product with the appearance and feel of high-quality woolen yarn.

[Brief explanation of the drawing]

Figure 1 is a stable diagram of the fibers constituting the spun yarn of the present invention, and Figure 2 is a model side view of the spun yarn of the present invention. In Figures 1 and 2, one stone is a fiber equal to the rotor diameter. The fiber length is 1.5 times the rotor diameter, f
l is! The ratio of fibers having a fiber length of 1 to 1, where (1) is the tightened portion and (2) is the hook fiber. f figure

Claims (1)

[Claims] A spun yarn formed by a single rotor air spinning method,
It is composed of at least two types of fibers. Type 1 has a submergence shrinkage rate of 5%, accounts for 30 or more of the entire spun yarn, has a random fiber length distribution, and has a fiber length of D-1.5D [where D is the diameter of the convergence part of the rotor]. ] contains 5 to 20% of the total spun yarn, and the remaining fibers have a fiber length of D or less, and other types have fiber lengths of D or less and account for 70% or less of the total spun yarn, 10~
The fibers with a diving shrinkage rate of 20 cm are
An air-spun yarn containing 60 fibers and having a submerged shrinkage rate of 5% or less for the remaining fibers.