JPH03174041A - String for knitted or woven fabric - Google Patents

Abstract

PURPOSE:To obtain the subject string, excellent in bulkiness, softness, heat insulating properties, etc., and suitable for winter clothing by slenderly slitting paper consisting essentially of animal hair fiber, natural cellulosic pulp fiber and wet strength improver. CONSTITUTION:The objective string obtained by forming animal hair fiber such as wool into the shape of a top and cutting the resultant top to 3-10mm length, mixing the prepared fiber with cellulosic fiber such as preferably MITSUMATA (Edgeworthia papyrifera) or Manila hemp at (85:15)-(10:90) ratio and further adding a fibrous hot water-soluble binder such as polyvinyl alcohol fiber (in an amount of 0.5-20wt.% based on the total fiber weight), a wet strength improver such as polyamidoamine epichlorohydrion resin thereto, providing a stock for forming sheets and forming the resultant stock into the sheets of paper using a paper machine such as a cylinder type paper machine and slitting the formed sheets of paper to 1.0-8mm width.

Description

[Detailed Description of the Invention] [Industrial Application Field] This invention can be knitted or woven to form knitted or woven fabrics, and can be used as a raw material for bulky and bulgy clothing, especially for fall and winter wear. This relates to strings for knitted and woven fabrics.

[Conventional technology]

BACKGROUND ART Strings made from natural cellulose fibers and synthetic fibers such as rayon have been used as raw materials for clothing, especially for fall and winter. In particular, strings that can be dyed and made mainly of bast fibers and leaf vein fibers such as Mitsumata and Manila hemp are used in knitted fabrics under the name ``shoori yarn'' and are recognized as fashionable due to their unique shape effects.

[Problem to be solved by the invention]

However, strings made mainly of cellulose fibers are treated as a smooth summer clothing material because of the so-called paper-like hard texture of the base paper, which feels cold to the touch, and their shape, and are rarely used for winter clothing. It was just a matter of time.

In addition, attempts were made to mix and match wool and bulky acrylic, but this was only used in some fields because it was considered to essentially offset the winter feel of wool and bulky acrylic. .

Therefore, by mixing animal hair with strong cellulose fibers and also using an internally added or post-processed wet strength improver, the applicant achieved the plump, massy feel and warm feel of animal hair. The purpose of the present invention is to make a bulky, flexible and dyeable paper using the paper, and by slitting the paper, a string is produced which gives a fluffy, soft and warm touch suitable for winter clothing. The objective is to provide strings for knitted fabrics and textiles that have high bulk, flexibility, and heat retention properties as materials for winter clothing.

[Means to solve the problem]

The gist of the first invention is that it is formed by slitting paper containing animal hair fibers, natural cellulose pulp fibers, and a wet strength improver as essential components.

The gist of the second invention is that the animal hair fiber is wool that has been subjected to descaling treatment.

The gist of the third invention is to contain a fibrous hot water-soluble binder.

[Function] According to the first invention, a string is provided which gives a fluffy, soft and warm touch suitable for winter clothing.

The second invention results in a string without lumps.

The third invention provides a string with high tensile strength and tear strength.

〔Example〕

Examples of the present invention will be described below.

The animal hair fibers of this invention include sheep, goat camel, rabbit, cashmere, mohair, albaca, angora, and the like. Since these animal hairs are composed of fibrous substances whose main component is protein, they are suitable as materials for improving the points that need improvement in conventional strings.

Wool contains spiral crimps, and the expansion and contraction due to heat absorption and release follows the shape of the crimps, making it an advantageous material in that paper with high bulkiness can be obtained, and research on processing technology is progressing. . Wool is not limited by its type or thickness. However, since the fiber length is generally too long for paper making, it is preferable to cut the fiber to an appropriate length, and it is easier to use if it is cut into 3 to 10 mm pieces after being formed into a top shape.

Wool has a protruding structure called scale on the surface of the fiber, and when those with significant protrusions are dispersed in water,
During stirring and circulation, the fibers rub against each other and become entangled, forming clumps. As a result, the paper becomes uneven in texture, thick and thin, and the string obtained by shredding the paper has a significant decrease in strength in the thin portions, which tends to cause problems in knitting and weaving. Therefore, wool from which scale has been removed by a so-called descaling process is suitable as a raw material for the present invention.

The treatment method for removing scale from wool fibers is a method that applies the modification treatment technology for the tip of the scale, which was developed as an anti-shrunk treatment for wool knitted fabrics, to wool fibers or fiber bundles such as wool tops. There are treatments using chlorine compounds and other inorganic oxidizing compounds. Another method that can be used is a polymer treatment method in which the scale is coated with a polymeric substance. Some application examples of these scale treatment methods are given in "Textile Handbook/Processing Edition" (2nd edition, 2nd printing, published August 20, 1970, Maruzen Co., Ltd., 912-
(page 914).

Usually, in the case of wool, descaling is done in the form of tops, so it can be determined very easily by obtaining the tops, cutting them, and conducting a dispersion test.

In the present invention, since it is difficult to make paper using animal hair alone, it is necessary to mix it with other fibrous or non-fibrous substances that have bonding or adhesive properties, among which bast fiber, leaf vein, etc. By mixing it with cellulose fibers such as fibers or wood fibers, it is possible to make paper with good quality. These cellulose fibers are produced by separating and extracting the cellulose fibers from other components using a method called cooking or steaming, and then, if necessary, converting them into fibrillated fibers that can be made into paper using methods such as bleaching and beating. It is adjusted to the correct state.

The ratio of animal hair to cellulose fibers varies depending on the quality and characteristics of the desired string, but in the case of wool and cellulose fibers, a range of 85:15 to 10:90 is suitable.

When the wool ratio is 85:15 or more, many fibers and fuzz are shed due to the wetting/drying cycle, and the strength is also reduced.

With a wool ratio of 10:90 or less, it is difficult to obtain a fluffy and warm feel.

Examples of bast fibers include mitsumata, kozo, ganbi, mulberry, flax, chiyo hemp, jute, kenaf, etc. Especially mitsumata,
Wooden basts such as kozo, ganpi, and mulberry are particularly suitable.

Examples of leaf vein fibers include Manila hemp and sisal hemp. These are pulped and bleached using known methods.

Bleached pulp such as bleached kraft pulp made from softwood or hardwood is used as the wood fiber.

The most preferable fibers are long fibers such as bast fibers, manila hemp, etc., and high strength and high toughness paper can be obtained by keeping the degree of beating to a low level. It's a good fiber.

Suitable fibrous hot water soluble binders are polyvinyl alcohol fibers and carboxymethylcellulose fibers.

This addition increases the strength of the paper and facilitates the twisting process from string to fancy yarn by slitting.

The amount added is preferably 0.5 to 20% by weight of the total amount of fibers, and is varied depending on the ratio of animal hair to cellulose fibers.

The addition is prepared as an aqueous slurry with animal hair and cellulose fibers.

Since the string of the present invention can also be used as a clothing material, it is preferable that it has wet strength that can withstand dyeing and washing.
For this purpose, wet strength improvers are added to the papermaking raw material. As this internally added type 'tN'tM strength improver, known polyamide amine epichlorohydrin resins, polyamine epichlorohydrin resins, polyacrylamide resins, urea/melamine resins, etc. can all be used alone or in combination.

In particular, excellent effects can be obtained when mixed with cellulose fibers such as bast fibers, leaf vein fibers, and wood fibers.

Another method for obtaining wet strength is to impregnate a resin dispersion, dry it, and then use a processed wet strength improver. In this method, the use of a hydrophobic resin may cause uneven dyeing during the dyeing process, so it is best to uniformly apply a small amount. Non-yellowing polyurethane resins, self-crosslinking type or reactive acrylic resins, insolubilized resins such as N-methoxymethyl polyamide resins are suitable.

A cylinder-mesh or short-mesh paper machine is suitable for the paper machine, and the Fourdrinier paper machine normally used for making Western paper is not advantageous in terms of strength after stringing.

A string with a width of 1.0 mm to 8 mm is obtained by using an ordinary paper thread slitter.

(Example 1) Manila hemp pulp was used as the natural cellulose pulp fiber in this example, and Manila hemp, caustic soda, and water were pressure-cooked in an autoclave, deliquified, washed with water, bleached,
Use the wet pulp after removing dust.

The animal hair fiber used is 60s or 64s wool that has been descaled using an oxidizing chlorine compound (chromed wool).

In Example 1, the descaled 64s wool top was cut into a length of 5 mm, and 60 parts of this wool, 40 parts of the Manila hemp pulp, and 0.6 parts of the wet strength improver were placed in a stirrer, and the total concentration was 0.6 mm. Water was added to the mixture to give a concentration of 25%, and the mixture was stirred and dispersed. This slurry was processed on a cylinder paper machine to a weight of 25g/
rn' paper was made.

Note that the papermaking conditions were such that the press roll pressure was increased to obtain a paper with high tension.

Also, it is 64s wool without descaling treatment 5
Comparative example 1 where paper was made under the same conditions except that it was cut into mm
In addition, as a conventional example, paper was made using only Manila hemp pulp as the fiber.

In the wool-mixed paper of Example 1, no particular abnormality occurred in the slurry during stirring for 1 hour and subsequent paper-making, and wool-mixed paper with a uniform thickness was obtained.

In the wool-mixed paper of Comparative Example 1, the generation of wool lumps was observed 10 minutes after the start of stirring, and by the time uniform mixing was completed, a considerable amount of large and small lumps had been generated and were present in the paper. When this lump was collected and observed under magnification, it was discovered that it was made up of wool entangled with each other.

In addition, in comparison with conventional examples, as shown in Table A, the wool-mixed paper of Example 1 had a density of 0.259, which was lower than the density of 0.488 when made from Manila hemp alone, and the feel was also extremely soft. .

The wool mixed paper of Example 1 was wound around a paper tube, and the width of the paper tube was 6 mm.
Strings were formed by cutting into mm pieces. By intertwisting this string with bulky acrylic spun yarn,
A fancy yarn with a distinctive appearance and a soft, warm feel was obtained.

A known dyeing method for wool/rayon blend yarns could be applied to this dyeing, and beautiful colors were obtained.

Table B shows the results of testing each characteristic for comparison between Example 1 and Comparative Example 1.

When Example 1 and Comparative Example 1 were compared from Table B, almost no difference was observed in terms of characteristics, and no adverse effects of wool fiber damage due to the descaling treatment were observed. On the contrary, in the comparative example, the thickness variation was significantly large due to the occurrence of lumps, and the tensile strength measurement value was decreased because thin and weak parts were locally formed.

(Example 2) 20 parts of the descaled wool of Example 1 and 80 parts of Manila hemp
1 part and the wet strength improver of Example 1 were used under the same conditions and an aqueous slurry was prepared in the same manner. This was made into paper using a cylinder paper machine, and then the wet paper made from paper was brought into close contact with a cylindrical roll, and a crepe-like unevenness was created using a doctor blade applied to the roll to produce wet crepe paper. .

Comparative Example 2 was formed by the same paper making process except that it did not contain wool.

As shown in Table C, Example 2 has an increased thickness and a lower density than Comparative Example 2. Therefore, it felt soft and fluffy to the touch. When both were slit and made into strings in the same manner as in Example 1, the one obtained in Example 2 was found to have a fluffier and more flexible feel, and was also mixed with bulky acrylic spun yarn to create a distinctive fancy yarn. was gotten. The staining was also the same as in Example 1.

(Example 3) In Example 3, 60 seconds of descaled wool was cut into a length of 5 mm, and 60 parts of this wool and 4 parts of Manila hemp pulp were
0 parts, 1 part of a wet strength improver, and 2 parts of fibrous polyvinyl alcohol (melting point in water: 70°C, 1 denier x J mm length) were added to prepare an aqueous slurry having a fiber concentration of 0.5%.

This slurry was stable even after stirring for 1 hour, and only a small amount of wool lumps were generated. This slurry was processed on a cylinder paper machine to a weight of 25
g/m' paper was made. The papermaking conditions were set to such a level that the pressure of the press rolls was increased to obtain a paper with high tension.

A comparison between this Example 3 and Example 1 in which no fibrous polyvinyl alcohol was added is shown in the table.

It was confirmed that the wool-blended paper of Example 3 had a tensile strength 2.4 times higher and a tear strength of 2.4 times that of the wool-blended paper of Example 1.

When both were slit into strings and refined and washed in hot water using a detergent, the material obtained from Example 3 was found to have a fluffy and flexible texture similar to Example 1.
Similarly, a distinctive fancy yarn was obtained by mixing and twisting with bulky acrylic spun yarn.

The staining was also the same as in Example 1.

(Table A) (Table B) (Table C) In addition, Tensile strength and wet strength are kg/1 5 mm wide This is what was measured.

(Table D) Note that this invention is not limited to the above-mentioned "Example," and can be modified to be docked without departing from the spirit of the invention.

〔Effect of the invention〕

As detailed above, the first invention utilizes the fluffy, massy feel and warm feel of animal hair to use paper that is bulky, flexible, and dyeable, making it particularly suitable for winter wear. It gives a fluffy, soft, and warm feel suitable for clothing, and can be used as string for knitted fabrics and textiles with high bulk, flexibility, and heat retention.

The second invention results in a string without lumps. According to the third invention, it is possible to obtain a string with high tensile strength and tear strength.

The third invention can be made into a string with tensile strength and tear strength.

Claims (1)

[Scope of Claims] 1. A string for knitting or woven fabrics, characterized in that it is formed by slitting paper containing animal hair fibers, natural cellulose pulp fibers, and a wet strength improver into long and thin strips. 2. The string for knitting or woven fabrics according to claim 1, wherein the animal hair fiber is wool that has been subjected to descaling treatment. 3. The string for knitted or woven fabrics according to claim 1 or 2, characterized in that it contains a fibrous hot water-soluble binder.