JPS6262168B2 - - Google Patents

Description

[Detailed description of the invention]

TECHNICAL FIELD The present invention relates to a knitted fabric made of yarns made of natural fibers, recycled fibers, synthetic fibers, etc., and strings made of paper. Purpose Generally, paper is known to have excellent hygroscopic and water absorbing properties, and this invention takes advantage of the characteristics of paper to form paper into threads, and to create threads made of natural, recycled, synthetic fibers, etc. It is an object of the present invention to provide a method for manufacturing a knitted article, which can be knitted together with a knitted article to obtain a knitted article having excellent heat retention, flexibility, moisture absorption, and water supply. Embodiment An embodiment of the present invention will be described below. First, the method for manufacturing paper used in this invention will be explained. Manila hemp, which is leaf vein fiber, water and 15% caustic soda (based on raw materials) are placed in a digester and digested for 6 hours under a pressure of 5.5 kg/cm ² to form pulp. Next, the pulped raw material liquid is washed, dehydrated, dusted and bleached, and then concentrated to a moisture content of 70%. After that, it is beaten with a beater to a degree of freeness of about SR20°, and 1.5% of a wet strength improver (epoxy resin) is added in a compounding poucher. Also, a coloring agent or an ink bleed prevention agent is added in this compounding poucher. After this, paper is made using a cylinder paper machine. Next, the wet paper made from paper is creped. In other words, when the wet paper is applied to the doctor blade, the elongation rate is 6 to 200.
%, preferably 10 to 40%, on one or both sides of the crepe-shaped unevenness perpendicular to the longitudinal direction.Then, the same wet paper is pressed against the surface of the heated drying cylinder and dried to fix the uneven crepe. . The dried paper is wound up and then passed through a micro slitter to cut the yarn into tape-like strips of desired width.
The width of the paper to be cut into long tapes is 0.3 mm or more.
The thickness of the thread material is preferably within the range of 20 mm, and the thickness is formed as desired. Further, it is not always necessary to use the micro slitter; for example, the thread may be wound into a roll and then cut into rings to form the thread into a tape shape as described above. The strings obtained by cutting the paper as described above are aligned together with synthetic fibers such as spandex as reinforcing and bulking materials to knit into knitted fabrics such as sweaters and socks. The thus obtained string made of Manila hemp and wet strength improver, 2 mm wide, 0.042 mm thick, weighing 360 denier, and having an elongation rate of 22%, was tied together with 1 x 200 denier woolly nylon thread to make men's socks. was organized. The knitting machine used was a two-hole high-speed ridge knitting sock knitting machine equipped with 9A needles. I knitted M size socks with 11.2 gauge, but there were no problems such as thread breakage or stoppage. The organized socks are M size and are per pair.
It weighed 51g. This is 6g lighter per pair than socks of the same size and density that are made mainly from knitted yarn. In addition, the string produced without crepe processing but using the same process as above had a thickness of 0.031 mm, an elongation rate of 4.5%, and a tensile strength 1.3 times higher than that of the string of the above example. When the socks were knitted in exactly the same way as in the example, thread breakage occurred at the part where they came into contact with the needles, making it difficult to continue knitting. In the knitted fabric constructed as described above, the string made by cutting paper is crepe-processed on one or both sides, and has a crepe finish of 6 to 200%, preferably 10 to 200%.
Since it has an elongation rate of 40%, it is highly flexible and 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 said to be 5 to 6% and 11 to 16%, respectively. Also, synthetic fiber systems 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 among the lowest because the elongation rate is large, and preferably an elongation rate of 10% or more is required, which is comparable to worsted yarn. By the way, when paper strings were formed without crepe processing so that the elongation rate of the strings was less than 5%, fine wrinkles and jaggedness occurred in the loops of the knitting structure even when the string width was 1 mm. Because it is finished in a raw state, it has an appearance that gives an unpleasant feeling of flickering 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%, the discomfort of the touch decreases, but on the other hand, the elongation decreases compared to those with an elongation rate of 10% or more, and the flexibility also decreases when the elongation rate is 10% or more. There is a slight visual problem due to the appearance of minute wrinkles due to the lack of color in comparison, but this is fine. In addition, the crepe process forms irregularities on the surface and fixes the air-containing parts of the string, making knitted fabrics made from this string light, warm, and soft. In other words, Manila hemp paper made using the same manufacturing method as in this example and without crepe processing has a thickness of 30 to 32 μm, while paper with one side smoothed and the other side creped has a thickness of 40 to 32 μm.
The thickness increases by more than 30% to 42 μm. Furthermore, the thickness is 65 to 70 with crepe processing on both sides.
μm, which is more than 100% compared to paper that is not creped at all. This increased thickness is entirely made up of air pockets as finely dispersed air-containing parts contained within the paper structure, resulting in extremely excellent heat retention due to this insulation effect. In addition, one of the basic functions of clothing is heat retention, which requires the ability to prevent wind.
This effect affects the ratio of the yarn area to the loop area formed when the yarn is knitted. That is, it is necessary that the knitted fabric has a large cover factor. This value is proportional to the thickness of the yarn in the direction of the knitting surface when the yarn is knitted.

[Table] For example, as shown in the table above, when the width of the string formed by this invention is 2 mm and the thickness is 0.042 mm, the value is significantly larger than that of 20 ^S and 10 ^S cotton yarns, and the cover factor is It is possible to make it larger. In addition, it is lighter in weight than cotton yarn ^10S , and when considered together with the cover factor described above, its heat retention effect is high. By increasing the cover factor and the heat retention properties of the strings, it is possible to knit clothing that has both the moisture absorption and heat retention properties of the natural fibers that are the raw materials for paper. Furthermore, the materials used for clothing are generally made by physically assembling fibers, and these are spun yarns (short fibers) or filament yarns (long fibers), and each is often twisted to contain air. However, as shown in the figure, the air-containing portion approaches zero due to external pressure. In addition, in the figure, 1 indicates the conventional thread 1, and P indicates the pressure. For example, like clothing made of cotton or wool, it sometimes shrinks and becomes hard when washed. However, in this embodiment, the paper is creped to form irregularities on the surface, and the air-containing portion is fixed during paper manufacture, so the air-containing portion will not be crushed by external pressure. Further, since paper has excellent hygroscopic and water absorbing properties, a knitted fabric made by knitting a string formed from paper and the above-mentioned threads also has high hygroscopic and water absorbing properties. In addition to the aforementioned Manila hemp, the vein fibers include sisal hemp, New Zealand hemp, and the like, and the same strings as in the above embodiment can be made with either of them. Next, another example 1 will be explained. In the first embodiment, the raw material for the yarn is pulped Manila hemp, which is a leaf vein fiber.
70% Manila hemp pulp of the example and 30% pulp prepared by cooking mitsumata as bast fiber under normal pressure and beating with a discreef eyeliner are mixed together in a poacher, subjected to a specified inner surface treatment, and made into a circular mesh. Paper may be made by paper making. After paper making, crepe processing is applied to both or one side of the paper as in the first embodiment, and the paper is cut into tape-like strips of arbitrary width using a micro slitter. Thereafter, in the same manner as in the previous embodiment, socks, sweaters, etc. are knitted by aligning the synthetic fibers with spandex. The effects of this alternative example 1 are also similar to those of the first embodiment. In addition, in the above-mentioned Other Example 1, mitsumata is used as the bast fiber, but instead, for example, hemp,
Flax, Indian hemp, western hemp, kozo, and gampi may also be used. Alternatively, instead of the bast fibers, other fibers such as softwood pulp, which is a wood fiber, may be blended with the manila hemp pulp to make paper, crepe-processed, and cut into thin strips with a micro slitter to form a tape. good. Next, another embodiment will be described. A solution of zinc dimethyldithiocarbamate as an antibacterial agent and a small amount of a binder resin in methyl ethyl ketone was applied to the crepe paper made of 60% Manila hemp pulp and 40% softwood pulp using a gravure roll and dried. The amount of the zinc compound deposited was 0.2%, and the flexibility of the crepe paper was not inhibited at all. After this,
The strings obtained by cutting them into 1.0 mm width had excellent antibacterial effects and remained effective even after being washed several times. Note that the antibacterial agent may be impregnated instead of being applied. A knitted fabric is obtained by aligning the string with yarn made of synthetic fiber or the like and knitting it. In this example, the knitted fabric is highly hygroscopic and water-absorbing, as in the previous example, and furthermore has an excellent antibacterial effect. When such a special treatment is applied to the knitted fabric, it is only necessary to apply or impregnate the knitted fabric with a special chemical by utilizing the hygroscopicity of paper, which is the material of the string, and the treatment process becomes simple. Note that the present invention is not limited to the above embodiments, and for example, natural fibers,
The yarn made of recycled fibers or semi-synthetic fibers and the string may be knitted into a knitted fabric, and any changes may be made without departing from the spirit of the invention. Effects As detailed above, the present invention uses a string made of yarn made of natural fibers, recycled fibers, synthetic fibers, etc., and paper that is stretchable and has crepe-like irregularities formed on its surface, cut into long thin tape shapes. By aligning the strings and knitting them by machine, it is possible to obtain a moisture-absorbent knitted fabric with excellent heat retention, flexibility, and no yarn breakage compared to when using strings that are not creped. This invention can be stably manufactured and is excellent for industrial use.

[Brief explanation of the drawing]

Figure a is a front view showing the normal state of conventional thread, b
is a front view when pressure is applied. Thread 1, pressure P.

Claims (1)

[Scope of Claims] 1. A string made of threads made of natural fibers, recycled fibers, synthetic fibers, etc., and a string made by cutting stretchy paper with crepe-like unevenness on its surface into a long and thin tape shape. A method for manufacturing a knitted product characterized by machine knitting. 2. The method for producing a knitted article according to claim 1, wherein the paper is treated with antibacterial treatment.