JP2901269B2 - Pile yarn for mop and its manufacturing method - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a pile yarn for a mop in which the yarn is prevented from fraying, and a method for producing the same. More specifically, the present invention relates to a repeated operation of cleaning and washing. Also in this case, the present invention relates to a pile yarn for a mop, which mainly eliminates fraying and abrasion of a twisted yarn from a cut end, and loss of bulky property due to fraying prevention processing, and a method for producing the same.

(Prior Art and Problems Thereof) Conventionally, as a pile yarn for a mop for cleaning, a twisted yarn obtained by twisting a plurality of thick yarns (called elementary yarns) is generally used. In the form of the cleaning mop, the end of the mop pile yarn is in a free state in which the twisted yarn is cut, and the twist is released from the cut end, and the frayed yarn is significantly worn. In particular, the cleaning mop is subjected to severe use conditions such as rubbing against the floor surface, and is subjected to severe washing conditions even after use, so that the pile yarn is frayed or worn from the end. Will be significant and will eventually become unusable. For this reason, it is important to prevent the return of twist from the pile yarn cutting end in maintaining the quality and life of the pile yarn.

As a method of producing a mop yarn in which fraying has been prevented in the past, an attempt is made to apply a treatment utilizing heat fusion of a resin to a plurality of twisted yarns of a pile yarn to prevent fraying and wear of the twisted yarn. Has already been done, for example,
No. 13907 describes that resin particles having a low melting point such as polyethylene are interspersed on the surface of a twisted yarn for a mop, and fusion treatment is performed in an independent point-adhesion form. Also, JP-A-57-177729 discloses that a twisted yarn comprising a plurality of raw yarns and a core yarn of a low melting point synthetic fiber such as polypropylene is produced, and the twisted yarn is heat-treated in a compressed state while being sent under tension. A method of welding a core yarn to a joint surface of each yarn is described. Further, JP-A-58-163745 describes a method of melting a cotton yarn and a heat-adhesive synthetic filament yarn such as polyethylene.

However, in these methods of preventing fraying, since polyethylene and polypropylene used for fusing have an oil-absorbing property, oil stains adhere to and accumulate on the heat-bonded portion. The disadvantage is that the life of the mop due to oil stains is shortened. The temperature of the fusion treatment is still quite high, the energy cost for the heat treatment is high, and the pile fibers are liable to be thermally degraded.

Acrylic fiber used as the raw material for acrylic mop pile has excellent texture and bulkiness, but has the drawback that the twist is sweetened by the hydrophilic treatment, and the fiber is easily frayed and shortened by peeling (dropping). ing.

Accordingly, an object of the present invention is to provide a mop pile yarn in which fraying and abrasion of a twist yarn are prevented and adhesion of oil stains and the like is eliminated.

Another object of the present invention is to provide a method for producing a mop pile yarn in which the twisted yarn is not frayed or worn without impairing the flexibility, freedom and feel of the mop pile yarn, and without using severe conditions such as damaging the fiber. To provide.

(Means for Solving the Problems) According to the present invention, it is made of a crimped and dyed twisted acrylic fiber, and the single yarn in the twisted yarn has a single fiber length of 30.
A single yarn of a hydrophilic acrylic fiber having a twist coefficient in the range of 1.0 to 5.0 and a twist coefficient of 60 to 140 T / m in the opposite direction to the twist direction of the single yarn. While being twisted, it is fused and fixed by the low melting point polyamide fiber interposed between the single yarns, and the usage ratio of the low melting point polyamide fiber and the acrylic fiber is such that the total fineness of the low melting point polyamide fiber is d ₁ , The present invention provides a mop pile yarn characterized in that the mixing ratio represented by (d ₁ / d ₂ ) × 100 is in the range of 0.5 to 5.0%, where d ₂ is the total fineness of the acrylic fibers.

Further, according to the present invention, the single fiber length is 30 to 150 mm
A plurality of acrylic single yarns made of crimpable hydrophilic acrylic fibers in the range of and having a twist coefficient in the range of 1.0 to 5.0, with the low-melting polyamide multifilament as the core, the twist direction of the single yarn and A step of twisting in the opposite direction and at a predetermined number of twists, and immersing the obtained twisted yarn in a water bath lower than 30 ° C., gradually raising the temperature to a temperature of 70 to 100 ° C., and maintaining the temperature for a predetermined time; A step of performing a crimping treatment of the twisted yarn and a fusion treatment with a low-melting polyamide, and a step of dyeing an acrylic fiber following this step. Is provided.

(Action) The acrylic fiber used in the present invention has a single fiber length of 30 to 150 m.
m, especially 30 to 70 mm, fineness of 1.5 to 15 denier, especially 1.
By setting the denier to 5 to 5.0, it is possible to obtain a mop yarn having excellent quality and low production cost. That is, if the single fiber length is shorter than the above range, the fibers fall off (peeling).
And the strength of the single yarn is inferior, so that the yarn is liable to be cut and causes tapering. As the acrylic fiber, a conventionally known acrylic fiber can be used. Above all, acrylic polymer blends are preferably used, and those commercially available from Toray Industries, Inc. under the trade name of Toray Samina can be used.

Low-melting polyamide fibers are a plurality of types of polyamide fiber-forming monomers, that is, copolymer nylons composed of a combination of an ω-aminocarboxylic acid component or a dicarboxylic acid component and a diamine acid component. Available in the form of low multifilament yarns, their fineness is generally between 30 and
It is in the 300 denier range. Suitable low melting polyamide fibers are available from Toray under the trade name Elder and from Unitika under the trade name Flor-M.

Furthermore, low-melting polyamide fibers, compared to other resins,
Since it is excellent in mechanical strength such as toughness and abrasion resistance, it is possible to obtain a mop pile yarn which is excellent in durability and abrasion resistance and also remarkably excellent in terms of feeling and waist strength. Furthermore, since the melting point is generally in the range of 80 to 140 ° C., this low-melting polyamide fiber is remarkably characterized in that it can be melted at a considerably lower temperature under wet heat conditions than under dry heat conditions. .

The present invention makes use of this property of the low-melting polyamide fiber to fix the twist under mild conditions without damaging the fiber of the mop pile yarn and without impairing its flexibility, freedom and feeling. It is possible. Furthermore, the polyamide resin can be directly dyed with a dye or the like, and can be dyed every time it is reproduced as a rental product, thereby increasing the commercial value.

In the present invention, the twist coefficient of the acrylic single yarn is 1.0 to
It is also important to be within the range of 5.0 mm, especially 1.5 to 3.5 mm. The higher the twist coefficient, the less likely the single yarn will be to fray, but if mop yarn is required, the bulkiness and flexibility will be impaired, the dust collecting and holding properties will be reduced, and the cleaning workability will be impaired. Also tends to decrease. In addition, as the twist coefficient is smaller, the bulkiness and feeling are increased, but the twist is not sufficiently fixed when subjected to the regenerating treatment, so that the tendency of the yarn to become frayed or worn during repeated use is increased.

Further, a plurality of single yarns are wound in a direction opposite to the twisting method of the single yarns.
To 140 T / m, especially by 80 to 120 T / m, by twisting, the low melting point polyamide fiber interposed between the single yarns due to the return of twist at the time of twisting comes into contact with a relatively wide portion of the acrylic fiber, The single yarn can be effectively fused at many points, and in combination with the above-mentioned action, it becomes possible to more securely prevent fraying.

The mixing ratio of the low-melting polyamide fiber to the acrylic fiber is represented by (d ₁ / d ₂ ) × 100, where d _{1 is} the total fineness of the low-melting polyamide fiber and d ₂ is the total fineness of the acrylic fiber. The range is 0.5 to 5.0%. That is, if the amount of the low-melting polyamide fiber is less than the above range, the fixing of the twist is not sufficient, and if it is more than the above range, the flexibility of the yarn is lost and the cost is increased.

According to the present invention, the fiber length of the single yarn described above is 30 to 150 m
m single acrylic fiber is subjected to a hydrophilic treatment and twisted with a low melting polyamide fiber.

At this time, the pile yarn is 90 to 180 T / m, particularly 100 to 140 T / m.
Twisting times of T / m and twisting direction is opposite to that of twisting, and less than the number of times of twisting and 60 to 140 T / m, especially 60 to 120 T / m. It is better to have. The fact that the number of times of the first twist is smaller by 10 to 30% than the number of times of the first twist is advantageous for fixing the twist in connection with the fusion treatment described later. When the number of twists of the ply twist and the ply twist is less than the above range, the twist is insufficiently fixed when subjected to the treatment described below, and the tendency to cause the yarn to be frayed or worn during repeated use increases. I do. Also, if the number of twists of the upper twist and the lower twist is larger than the above range, the flexibility and freedom of the pile yarn are lost, the dust collecting property, the holding property is reduced, and the cleaning workability is deteriorated, Also, the feeling tends to decrease.

The plurality of single acrylic fiber yarns and the low melting point polyamide fiber can be twisted by various methods within a range that satisfies the above-mentioned restrictions. For example, twisting can be performed such that the low-melting polyamide fiber is located at the center of a plurality of acrylic fibers, or in the form of a sheath in which the low-melting polyamide fiber is coated as a core and the acrylic fiber covers the core. It may be a twisted yarn. It is desirable that the number of single acrylic fiber yarns is generally as small as 1 to 10, especially 1 to 5.

According to the present invention, the twisted yarn thus produced is treated in a bath in which the yarn is heated to a temperature higher than the wet heat melting point of the low melting polyamide fiber, and the yarns are fused with the low melting polyamide located therebetween. To wear.

As already mentioned, low melting polyamides exhibit a much lower melting temperature on wet heat than on dry heat. In the present invention, the fusion treatment is performed in a bath utilizing these characteristics.

As a bath, the pile yarn is damaged by immersing the twisted yarn in a water bath lower than 30 ° C, gently raising the temperature to 70 to 100 ° C, and holding at this temperature for 5 to 60 minutes. In addition, the crimping treatment and the fusion of the low-melting polyamide can be performed simultaneously.

The treatment of the twisted yarn in the bath may be performed by continuously passing the twisted yarn through a bath such as a J-box, or by immersing a twisted cone or the like in the bath. The time of immersion in the bath may be any as long as the fusion can be performed reliably, and a treatment of 5 to 60 minutes is generally sufficient.

It goes without saying that the mop pile yarn according to the present invention can be subjected to any known processing such as dyeing, finishing, and oiling.

(Example) The following example of the present invention will be described in detail.

The pile yarns for mop shown in Table 1 below are manufactured, and the pile yarns are subjected to an oil impregnation process to prepare a mop for cleaning. This was subjected to the following tests, and the results are shown in Table 1.

Cleaning workability The mop was attached to a mat gripping tool, and five panelists actually cleaned the floor surface, and the ease of cleaning with the mop and the feeling of the mop pile yarn were evaluated.

Dust collecting property One of the above-mentioned mop and silica sand powder having twice the weight of the mop are put in a plastic container, covered and shaken well, and the silica sand powder is uniformly attached to the cloth. Subsequently, a certain mechanical vibration is applied to this, and silica sand powder which has weakly adhered to the cloth is shaken and applied. The rate of weight increase before and after this operation was defined as the dust collection rate.

That is, Here, a: cloth weight before test b: cloth weight after test Mop pile yarn abrasion test Repeat the operation of sweeping each of the above mop along the tatami mat, until the operation becomes difficult due to the abrasion of the pile. The number of times was determined.

Endurance test A cycle of cleaning and washing for 4 weeks, followed by regeneration treatment by oil impregnation treatment was repeated 10 times for the mop, and the occurrence of fraying of the mop pile yarn and the degree of recontamination of the mop pile yarn were evaluated.

(Effects of the Invention) According to the present invention, a mop pile yarn in which fraying and abrasion of a twisted yarn is prevented and adhesion of oil stains and the like is eliminated, and a fiber is produced without impairing the flexibility, freedom and texture of the mop pile yarn. A method has been provided for producing a mop pile yarn in which fraying and damage of the twisted yarn are prevented without using severe conditions such as damage.

Claims (2)

(57) [Claims] An acrylic fiber twisted and dyed by crimping and dyeing, wherein the single yarn has a single fiber length of 30 to 15%.
It is made of hydrophilic acrylic fiber single yarn having a twist coefficient of 1.0 to 5.0 in a range of 0 mm, and in the twisted yarn, a plurality of single yarns are twisted in a direction opposite to the twist direction of the single yarn and at a twist number of 60 to 140 T / m. While being combined, they are fused and fixed by a low-melting polyamide fiber interposed between the single yarns.The usage ratio of the low-melting polyamide fiber and the acrylic fiber is such that the total fineness of the low-melting polyamide fiber is d ₁ , acrylic The total fineness of the fiber is d ₂
The compounding ratio represented by (d ₁ / d ₂ ) × 100 is from 0.5 to
Mop pile yarn characterized by being in the range of 5.0%. 2. A crimping hydrophilic acrylic fiber having a single fiber length in a range of 30 to 150 mm and a twist coefficient of 1.0.
A step of twisting a plurality of acrylic single yarns within a range of from 5.0 to 5.0 with a low-melting polyamide multifilament as a core, in a direction opposite to the twisting direction of the single yarn and at a predetermined number of twists, and 70 in water bath
A step of gradually raising the temperature to a temperature of about 100 ° C. and holding the temperature for a predetermined time to perform a crimping treatment of the twisted yarn and a fusion treatment with a low-melting polyamide; and, following this step, dyeing of an acrylic fiber A method of producing a pile yarn for a mop.