JPS6343491B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION TECHNICAL FIELD This invention relates to paper strings that can be knitted or threaded to form knitted or woven fabrics.

BACKGROUND ART Yarns generally used in knitting and woven fabrics must (a) be uniform in strength and thickness, (b) have appropriate strength and elongation, and (c) It is required to have various conditions such as) having appropriate elasticity, (d) the surface of the thread being smooth without dense fuzz, and (e) not fuzzing due to friction.

Conventional yarns are broadly divided into filament yarns made of long fibers and spun yarns made of relatively short fibers. A wide variety of yarns are provided through processing such as blending, blending, and kneading with each other or with each other.

Purpose The object of the present invention is to provide a highly flexible string intertwisted with paper and other conventional yarns as a yarn for knitting and woven fabrics.

Example A first example will be described below. First, a method for manufacturing base paper for forming strings will be explained.

Manila hemp, which is leaf vein fiber, water and caustic soda15
% (relative to raw material) into the digester and pressurize
It is pulped by cooking for 6 hours under a pressure of 5.5 Kg/cm ² . Next, the pulped raw material liquid is washed, dehydrated, dusted and beaten with a bleaching beater to a degree of freeness of about SR20°, and in a compounding poucher, as a wet strength improver, for example, polyamide epichlorohydrin resin is added to 100 parts of Manila hemp pulp. It is added in an amount of 0.3 parts by weight or more, preferably 0.7 to 2.0 parts by weight. In addition, coloring and other chemicals are added as necessary in this compounding poucher. After this, paper is made using a cylinder paper machine.

Next, the paper-made wet paper is brought into close contact with a cylindrical roll, crepe-like unevenness is provided by a doctor blade applied to the roll, and then the wet paper is dried in a heated drying cylinder. In this case, if unevenness on only one side is preferable, drying is performed by pressing it against a heating drying cylinder with light pressing pressure. If it is desired to provide unevenness on both sides, the crepe-like unevenness is fixed with a blanket or canvas and dried.

This dried paper is rolled up, and then passed through a slitter (commonly known as a micro slitter) that can cut the paper into extremely thin tapes using a shear cut method to cut the paper into tape-like strips of the desired width.
Wind up the base paper tape onto roll 1. Next, a rotating tow-type yarn twisting machine 2 for twisting the base paper tape will be described.

A rotating tow 5 rotated by a driving pulley 3 via a driving belt 4 is connected to the base paper tape winding 1.
A pair of bearings 6 rotatably support the paper, and below the bearings 6 there is a small-diameter part (not shown) in which a base paper tape 7 is inserted so that the width can be bent and made smaller than the width of the paper. A shaped trumpet tube 8 is provided. When the base paper tape roll 1 is attached to the rotary tow 5, the base paper tape 7 is inserted into the trumpet tube 8 and pulled out downwardly, and the rotary tow 5 is rotated by the drive pulley 3, the base paper tape 7 is rotated as shown in FIG. 3a. The width direction perpendicular to the longitudinal direction of the base paper tape is curved to have an arcuate cross section, and the tape is twisted. At this time, if other existing fibers (e.g., natural fibers, synthetic fibers, etc.) 12 are fed from above the paper twisting machine (Figures 1 and 2), they become twisted yarns (see Figure 3b), which improves the appearance. You can get unique products.

In addition, 9 in the figure is a drum for pulling out twisted yarn arranged below the rotating tow 5, and the string S twisted from the rotating tow 5 is placed in its outer cylinder.
It is designed to be rolled up and pulled out downward. 1
Reference numeral 0 denotes a winding device, which winds the string S passed through the drum 9 for drawing out the twisted yarn into a cheese, cone, or bobbin shape via a traverse device 11.

The strings made by cutting paper in this way and curving it into an arc in a direction perpendicular to the longitudinal direction of the paper are creped on one or both sides.
Since it has an elongation rate of ~200%, preferably 10~40%, it is advantageous as a yarn material for knitting such as stockinette knitting.

That is, it is known that the knitting performance of raw yarn for knitting fabrics requires greater elongation than raw yarn for textiles, and that the higher the elongation, the better. The elongation of conventionally used single yarns of cotton yarn and worsted yarn is usually 5
~6% and around 11-16%.

Also, synthetic fiber yarns usually exhibit even greater elongation. Since commonly used knitting machines involve forming loops from yarn, the elongation of the yarn is an important issue. Since knitting machines are designed based on conventional existing yarns, they need to have an elongation rate comparable to that of yarns made of natural fibers, and the thicker the yarn, the more bending deformation of the outer periphery occurs when a loop is formed. This is because an elongation rate of 6% is the minimum value because the elongation rate becomes large, and preferably an elongation rate of 10% or more, which is comparable to worsted yarn, is required.

Incidentally, in the case of ordinary paper that has not been creped, the elongation rate is less than 5%, so when paper strings are formed, many threads break during knitting. Even when the width of the string is 1 mm, fine wrinkles occur in the loops of the knitted structure, and the finished product is finished with jagged edges, giving an appearance that gives a flickering and unpleasant feeling to the eye, and is also unpleasant to the touch because it irritates the skin.
In addition, when the elongation rate of the string is in the range of 6 to 10%, tactile discomfort decreases, but on the other hand, slight wrinkles occur due to lack of elongation and flexibility, which does not affect the wearer's appearance, but may cause visual discomfort. There are some problems and it is not particularly desirable.

In addition, the crepe process creates unevenness on the surface, which increases the thickness and increases the air-containing area of the string, making knitted fabrics and fabrics made from this string light, warm, and soft. In other words, the paper is made using the same method as in this example, but
Thickness for non-creped manila paper
Crepe paper, which exhibits a thickness of 30 to 32 μm, becomes 40 to 42 μm when one side is smooth, which increases the thickness by more than 30%.
Furthermore, crepe paper with uneven surfaces on both sides is thicker.
It reaches 65 to 70 μm, which is an increase of more than 100% compared to the paper that is not creped at all.

This increased thickness is largely comprised of finely dispersed air-containing locules contained within the paper structure, resulting in extremely excellent moisture retention due to this heat insulating effect.

Since this string is curved in the width direction of the paper and has a rounded outer circumference, the running resistance is reduced and the weaving and weaving becomes good. Furthermore, since it is twisted, it can have appropriate strength, which is advantageous when used for textiles.

Also, by changing the number of twists or the twisting method, a string with a special appearance can be formed.
It is also possible to enhance the design effect of the string. Furthermore, since the yarn is twisted with yarns made of other fibers, it has a unique appearance.

In general, materials used for clothing are physically aggregated fibers, which are spun yarn (short fibers) or filament yarns (long fibers), each of which is twisted to contain air. many.

For example, Figures 4 and 5 show conventional processed yarn such as spun yarn, and Figure 6 shows the base paper tape before twisting in the string of the present invention.B in each figure is its cross-sectional view, and 21 is a single fiber. , 22 is an air-containing part, and P is an external force. 23 indicates a binder. The air-containing portion 22 shown in FIG. 4a is crushed by the output P (such as shrinkage or expansion) as shown in FIGS. 5a and 5b.

On the other hand, in the base paper tape shown in FIG.
Since it is composed of the single fibers 21 and the binder 23 at the papermaking stage, the air-containing portion remains uncollapsed even under pressure P (shrinking, stretching, etc.).

Therefore, unlike conventional clothing, this string can eliminate the problem of stiffness and loss of elasticity after repeated wearing and washing.

Furthermore, since the paper forming the string is formed by cutting, there is no unevenness in the threads, and the strength and thickness can be made uniform.

In addition to Manila hemp, the vein fibers include sisal hemp, carnauba palm, and the like, and the same strings as in the above embodiment can be made with either of them.

Next, a second embodiment will be described.

In the first embodiment, Manila hemp, which is a leaf vein fiber, was pulped as the raw material for the paper tape, but bast fiber pulp such as mitsumata and Manila hemp may be mixed in any proportion. In this case, the mitsumata shall be digested to normal pressure and bulged using caustic soda. Then, Manila hemp pulp and mitsumata pulp are mixed in a blending poacher or beater, the above-mentioned additives are applied, and paper is made in a cylinder paper machine.
Next, crepe processing is performed, unevenness is created on both sides or one side, and a micro slitter is used to cut into tape-like strips of arbitrary width.By aligning and twisting with existing fibers such as natural fibers and synthetic resins, it is possible to create a unique appearance. A product with good quality can be obtained.

In the second embodiment, mitsumata is used as the bast fiber, but instead, for example, hemp, flax, Indian hemp, Western hemp, kozo, or gampi may be used.

Alternatively, instead of the bast fibers, other fibers such as softwood pulp, which is a wood fiber, are blended with the manila hemp pulp to make paper, which is then creped and cut into long strips using a micro slitter to form a tape. It may be curved in a direction perpendicular to the longitudinal direction. However, the mixing ratio must be selected so that the wood fiber content is less than 50%. In addition,
This invention is not limited to the embodiments described above, and can be arbitrarily modified without departing from the spirit of the invention.

Effects As detailed above, the present invention is made of a wet paper made mainly of at least one of leaf vein fibers and bast fibers, and crepe-like unevenness is formed on one or both sides in a direction perpendicular to the longitudinal direction of the wet paper. A long and thin tape-like paper and threads made of natural fibers, synthetic fibers, etc. are aligned with each other and twisted together, and the long and thin tape-like paper has a direction perpendicular to its longitudinal direction. Due to the curved shape of the cross section, it has crepe-like unevenness, so it swells and has an air-containing part, which makes it warm and has a specified elongation rate, as well as flexibility. Furthermore, the paper forming the elongated tape-like paper has an arc-shaped cross section in the direction perpendicular to the longitudinal direction, so that more air layers can be obtained, thereby making it possible to obtain the above-mentioned In addition to having an air-containing portion formed by crepe-like unevenness, it can provide warmth. Furthermore, since it is intertwisted with other fibers, it has the excellent effect of having a unique appearance.

[Brief explanation of the drawing]

Fig. 1 is a principle diagram of the string twisting machine of the present invention, Fig. 2 is a side view of a rotating tow for twisting, Fig. 3a is an enlarged perspective view of a state in which the base paper tape is twisted, and Fig. 3b 4 is an enlarged perspective view of a string according to an embodiment of the present invention, FIGS. 4a and 4b are a front view and a sectional view of a conventional string in its normal state, respectively, and FIGS.
6b is a front view and a sectional view showing the compressed state from the state shown in FIG. 4, and FIGS. 6a and 6b are a perspective view and a sectional view, respectively, of the base paper tape. String...S.

Claims (1)

[Claims] 1. Formed from a wet paper mainly composed of at least one of leaf vein fibers or bast fibers, crepe-like unevenness is formed on one or both sides in a direction perpendicular to the longitudinal direction of the wet paper, and it has an elongated tape shape. Eggplant paper and threads made of natural fibers, synthetic fibers, etc. are aligned with each other and twisted to form a shape, and the elongated tape-like paper is curved to have an arc-shaped cross section in a direction perpendicular to its longitudinal direction. A string for knitting and woven fabrics.