JPH0967731A - Long and short complex spun yarn for mop and mop using the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a mop excellent in wiping property of cotton flocks, soil or sand and washable property of cotton flocks as in a cotton mop, moreover capable of improving the defect of cotton that the mop yarn is damaged by washing to significantly increase the durability. SOLUTION: This long and short complex spun yarn is composed of a polyamide multifilament crimped yarn having >=500 de total fiber denier and 10-30% percentage crimp and polyamide staple fibers having <=5 de single fiber denier and <=76mm fiber length. The objective mop is obtained by using long and short complex spun yarn for mop containing 20-80wt.% of the polyamide staple fibers and wherein the polyamide staple fibers are spirally wound around the polyamide multifilament crimped yarn in substanitially twisted state. The mop has superior drying property to the products of 100wt.% cotton and is effective for lowering the energy used for the sanitation and drying.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a long and short composite spun yarn for a cleaning mop, which is good in wiping-off property, washable property, washing durability, quick-drying property and little recontamination property, and a mop using the same.

[0002]

2. Description of the Related Art Conventionally, spun yarn made of 100% cotton has been generally used as a yarn for cleaning mops. The required characteristics of these mops are that soil, sand, cotton dust, etc. on the floor and tatami mats adhere to the spun yarn of the mop during cleaning and can be cleaned cleanly and easily, and when the mop yarn becomes dirty, it can be washed at home. When collected and industrially washed, these cotton dust and the like fall off quickly and endure many washings, resulting in little deterioration in quality. The cotton mop is excellent in wiping off dirt, sand, and cotton dust during cleaning, and has a washable property in which cotton dust quickly drops during washing, but on the other hand, it has poor washing and drying properties and washing durability, and cannot be used for a long time. there were.

Aiming at these improvements, for example, JP-A-63
A mop yarn made of a synthetic fiber multifilament yarn subjected to a crimping process described in Japanese Patent No. 9418 has been proposed. These are synthetic fiber multifilament yarns that have been crimped, have bulkiness, and have good dryness after washing, durability to washing, and wiping off dirt and sand. Since it has no fluff like cotton that adheres cotton shavings to it, it has a drawback that the ability to wipe cotton shavings is poor. In addition, although cotton dust sometimes adhered to the monofilament part at the tip of the cut yarn, it is said that the yarn is entangled with the cotton dust because it is a crimped yarn, and it is difficult to remove the cotton dust even after washing. It had drawbacks.

[0004]

DISCLOSURE OF THE INVENTION The present invention has made various investigations to improve such conventional drawbacks. As a result, in order to improve the wiping-off property of cotton waste, fluff is provided on the surface of filament crimped yarn,
In order to attach the cotton dust to the fluff, and to easily remove the cotton dust during the washing, the fluff, that is, the short fibers on the yarn surface should be appropriately cut or fallen off during the washing, so that the mop needs to be removed. By finding that the characteristics can be satisfied, they have found that it is possible to obtain a mop which has good wipeability and washability, and also has excellent washing and drying properties and washing durability.

[0005]

In order to solve the above problems, the long-short composite spun yarn for mops according to the present invention has the following constitution.

That is, a polyamide multifilament crimped yarn having a total fiber fineness of 500 denier or more and a crimping rate of 10 to 30%, and a single fiber fineness of 5 denier or less and a fiber length of 76
A long-short composite spun yarn composed of polyamide staple fibers having a size of mm or less, wherein the polyamide staple fibers have a mixing ratio of 20 to 80% by weight, and the polyamide staple fibers are obtained by winding the polyamide multifilament crimped yarn into a true twist. A long-short composite spun yarn for mops, which is characterized in that

A preferred embodiment of the long and short composite spun yarn for mops according to the present invention is characterized in that the polyamide multifilament crimped yarn has a single fiber fineness of 5 denier or more.

Furthermore, the mop according to the present invention has the following constitution.

That is, a mop characterized by using the above-mentioned long-short composite spun yarn for mop.

[0010]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, the present invention will be described in more detail.

The long-short composite spun yarn for mop of the present invention is a composite yarn composed of filament crimped yarn and staple fiber, and the filament crimped yarn has bulky property and washing durability, and also has wipeability and washability. The staple fibers act on each of them.

The material constituting the long-short composite spun yarn for mop of the present invention must be a polyamide fiber for both the multifilament yarn and the staple fiber in order to prevent recontamination during washing, and among them, nylon 6 and nylon 66 materials are preferable. good. Polyester-based or polyacrylic-based fibers are not preferable as mop yarns because they are naturally prone to redeposition. Polyamide multifilament crimped yarn has a total fiber fineness of 50.
It must be 0 denier or more. When it is less than 500 denier, bulkiness is insufficient as a mop thread,
It does not have the effect of improving the ability to wipe dirt and sand and the durability of washing, cannot withstand repeated washing for a long period of time, and since mop yarns are used in relatively thick counts, it is recommended to use fine count spun yarns. Requires a large number of spun yarns to be aligned and twisted, which is problematic in terms of cost.

The single fiber fineness of the polyamide multifilament crimped yarn is preferably 5 denier or more from the viewpoint of preventing the fiber from being cut during use. on the other hand,
When the fineness is increased, the durability of the mop yarn is improved, but the entanglement with the cotton dust attached to the filament-crimped monofilament that has been cut at the tip becomes stronger, and the removability of the cotton dust and the washability are significantly reduced. The single fiber fineness of the polyamide multifilament crimped yarn is preferably 20 denier or less.

Further, in the present invention, the crimp ratio of the above polyamide multifilament crimped yarn needs to be in the range of 10 to 30% from the viewpoint of bulkiness and crimp developability. If the crimp ratio is less than 10%, the shrinkage and crimp development of the multifilament yarn are small in the anti-twisting set treatment or the heat treatment during dyeing, the bulkiness is inferior, and the volume of the mop yarn is small. In addition to an increase in the yarn amount, the ability to wipe dirt and sand is reduced. Also,
If the crimp ratio is more than 30%, the crimp developability becomes excessive and the yarn itself becomes hard, and the crimp of the monofilament at the tip cut portion becomes large. Decrease the washability of scraps.

The crimp ratio here means JIS L
1015 refers to those required. That is, a 10 m ridge is made with a rim frame with a circumference of 1 m, and this is treated with boiling water (98
℃ × 20 minutes, free), cooled, naturally dried for 48 hours,
According to JIS L1015, a load of 50 mg / d is applied to the ridge, the ridge length is measured, and the crimp ratio is calculated according to the following formula.
Crimping rate (%) = {(A−B) / A} × 100 Here, A represents the length of the pile under the initial load, and B represents the length of the pile under the load of 50 mg / d.

The method for producing the polyamide multifilament crimped yarn used in the present invention is not particularly limited. For example, after the polyamide polymer is melt-spun by a usual method by the method described in JP-A-62-149926,
Obtained by drawing with a heating drawing roll, applying a heating compressed fluid to the filament fed in the state of overfeed with a nozzle to apply crimping, then crimping and fixing heat treatment in the yarn accumulating chamber, and cooling and winding. You can

The shrinkage rate of the polyamide multifilament crimped yarn in boiling water depends on the conditions such as heating draw ratio, overfeed rate, pressure of heated compressed fluid, temperature, and heat treatment temperature / residence time in the deposition chamber. You can control.

Next, the long-short composite spun yarn for mop of the present invention needs to contain 20 to 80% by weight of staple fibers. If the mixing ratio is less than 20% by weight, the number of fluffs due to staples is small, and the ability to remove cotton dust and the ability to wipe off dirt are poor. If it exceeds 80% by weight, the ability to wipe off cotton dust and the washability are good, but the durability as a mop thread is poor.

The single-filament fineness of the polyamide staple fiber must be 5 denier or less in order to improve the ability to wipe off cotton dust and the washability. If the monofilament fineness is more than 5 denier, the cutting strength of one monofilament is too high, the monofilament is not properly cut during washing, and fluff is provided on the surface of the filament yarn, and lint is attached to the fluff. The number of fluffs to be used is small and the cotton dust removability is poor. Above all, the single fiber fineness of the polyamide staple fiber is preferably in the range of 1 to 2 denier.

In the present invention, the staple fibers need to have a fiber length of 76 mm or less. If the fiber length exceeds 76 mm, the fiber entanglement with the multifilament yarn increases, the pull-out resistance increases, and a suitable single fiber dropout cannot be obtained during washing, resulting in poor cotton dust removability. Above all, 51 mm or less is preferable. On the other hand, it is preferably 30 mm or more from the viewpoint of forming a entanglement with the multifilament yarn, preventing falling off, and improving durability.

It is important that the long-short composite spun yarn for mop of the present invention has a yarn form in which the above-mentioned polyamide multifilament crimped yarn is wound with the above-mentioned polyamide staple fiber in a true twist shape. A staple fiber is wound around the outer layer of a multifilament crimped yarn in a real twist shape, whereby staple fibers are arranged in multiple layers and have bulkiness, and the yarn surface is covered with many fluffs with staple fibers. With the structure, short fiber fluff can be taken out and cotton dust can be removed, and at the same time, the excellent washability after practical use can be exhibited. In the case where filament and staple are simply spun and twisted, the filament yarn appears on the yarn surface in the same proportion as short fibers, so the short fiber fluff necessary for withdrawal is extremely reduced and it is practically used as a mop yarn. Lacks sex. Further, since such a yarn does not sufficiently form the entanglement between the filament and the staple, the filament and the staple are separated from each other in practical use, and thus the durability and the quality are inferior. Next, a method for producing the long-short composite spun yarn for mop of the present invention will be described.

The long-short composite spun yarn for mop of the present invention has bulkiness by arranging the multifilament yarn in the core portion of the spun yarn and the staple fiber in the sheath portion, and has many fluffs of short fibers on the yarn surface. By obtaining a spun yarn covered with, it is possible to obtain a spun yarn excellent in wiping-off property and washable property.

Although the specific manufacturing method is not particularly limited, for example, the front top roller of the spinning machine having the draft mechanism as described in Japanese Patent Publication No. 63-31568 is a stepped roller. , A short fiber bundle drafted from the large diameter part of the stepped roller and the front bottom roller is spun out, and crimped synthetic fiber multifilament yarn is sent out from the small diameter part of the stepped roller and the second top roller. It can be obtained by a method in which both are combined and twisted while wrapping a short fiber bundle around the synthetic fiber multifilament yarn.

The twist number of the composite spun yarn affects the entanglement between the multifilament yarn and the short fibers, that is, the fluff state and the pull-out resistance of the short fibers.
(Cotton type) may be set, but the twist coefficient K = 1.0 to 5.
A range of 0 is preferred.

The count is not particularly limited, and several long and short composite spun yarns for mop of the present invention may be twisted together according to the standard of commercially available mop yarns. When several twisted yarns are twisted together, it is common to insert a low melting point filament and fix the twisted yarn.

The method of forming a mop using the long-short composite spun yarn for mop of the present invention is not particularly limited. In order to color the long and short composite spun yarn for mop, a spun yarn may be used or a dyeing process may be performed. Further, when forming the mop, it is preferable to perform finish processing, oiling processing, re-contamination prevention SR processing and the like.

[0027]

Next, the present invention will be described more specifically with reference to examples.

Examples 1 to 3 and Comparative Examples 1 to 4 As a short fiber component, a polyamide type (Nylon 66 manufactured by Toray Industries, Inc.) 1.5 denier × 44 mm staple 100% by weight is sliver from a card by an ordinary short spinning method. , Roving was created.

On the other hand, a polyamide type (nylon 6 manufactured by Toray Industries, Inc.) multifilament yarn 500 denier-40 filaments crimped by a conventional method and having a crimp ratio of 23% were used.

As shown in FIG. 1, the front top roller of the spinning machine is a stepped roller, and a roving consisting of 100% by weight of the polyamide staple drafted in the large diameter portion of the stepped roller and the grip portion of the front bottom roller. On the other hand, the filament yarn is passed through a tensioning device, and at a speed slightly slower than the spinning speed of the front bottom roller, it is passed through a small diameter part that is not gripped by the front bottom roller by the stepped roller, and both are combined to form a multifilament yarn. Polyamide staple fiber bundles are wrapped around to give a real twist, and the composite spun yarn is made with an ordinary ring traveler to produce a composite spun yarn.
To obtain a staple mixing ratio of.

In Comparative Example 1, the spinning count is cotton, which is 1.87 S and the number of twists is 2.73 T / inch (twist coefficient K = 2).
Examples of those using 100% by weight of staples and Comparative Example 4 using 100% by weight of filaments. The filament of 100% by weight (Comparative Example 4) is obtained by spinning 6 of the above filaments without staple side. Further, the staple blended spinning rate of 10% by weight (Comparative Example 2) is a composite of the above 5 filaments and 500 denier staple. Two of these composite yarns are put together, twisted on them, and a mop for cleaning is created by implanting them on the base fabric. 20 panelists actually perform a floor cleaning test to wipe off cotton dust and dirt and sand. Was evaluated.

The mops after the wearing were washed with a household washing machine, and the state of the cotton dust attached to the mop yarn before and after the washing was visually evaluated. For durability, cleaning and washing were repeated 50 times, and damage to the fiber of the mop yarn and deterioration of the quality and occurrence of fraying at the tip of the mop yarn were evaluated and shown as washable.

The durability was evaluated by visually observing the number of fluffs of the mop loop, the degree of morphological deformation, and the degree of weight loss of the mop loop after 50 times of washing.

The dryness was evaluated by comparing each of the above levels with a commercially available 100% by weight cotton mop. After dehydration under the same conditions, a constant temperature bath (100 ° C.) 20
It is a sensory evaluation of the wet state after the minute.

The results of each evaluation are shown in Table 1. The results are evaluated in three stages, and double circle, circle, X from "good" to "bad"
Is shown in the table.

As shown in Table 1, the composite spun yarn using 100% by weight of the staple (Comparative Example 1) and 90% by weight of the staple (Comparative Example 2) has good wiping-off property and washable property for cotton waste. The durability as a mop thread was poor.

The composite spun yarn containing 90% by weight of filament (Comparative Example 3) and 100% by weight of filament (Comparative Example 4) had a small number of fluffs and were inferior in the cotton dust removing property and the washable property.

[0038]

[Table 1] Examples 4 to 5 and Comparative Examples 5 to 6 The fiber length of the short fiber component is 44 to 89 mm and the denier is 1.5 to 6 denier as shown in Table 2, and the staple / filament is formed by the same composite spinning method as in Example 1. Using a composite yarn having a mixed spinning ratio of 50/50, mops were prepared for each, and the same practical evaluation as in Example 1 was performed. The results are shown in Table 2.

In the case where the staple fiber length is not less than 76 mm (Comparative Example 6), the fiber entanglement with the multifilament yarn is increased, the pull-out resistance is increased, and an appropriate single fiber dropout cannot be obtained during washing, resulting in a washable property. It was extremely inferior. Even if the fiber length was 76 mm or less, Comparative Example 5 in which the denier of the short fiber was 6 denier was inferior in washability.

Comparative Example 7 A ring twisting machine using 3.75S of air entangled yarn (without actual twist) using the sliver of polyamide staple used in Example 1 as the short fiber component and the same multifilament as in Example 1 A double twisted yarn was produced at 2.73 T / inch, and a mop was produced using the yarn, and the same practical evaluation as in Example 1 was performed. The results are shown in Table 2, and the false twist entanglement due to the entangled fibers of the air entangled yarn was so strong that an appropriate single fiber omission could not be obtained during washing, and the washability was extremely poor.

Comparative Example 8 A composite yarn using a multifilament yarn (uncrimped yarn) as the short fiber component was prepared by the same blending ratio and composite spinning method as in Example 5, and a mop was prepared using the yarn. Example 1
The same practical evaluation was performed. The results are shown in Table 2. The multifilament yarn was not crimped, so that it had a poor wiping property for soil and sand, and because it was weakly bonded to short fibers, it was easy to come off and was inferior in durability.

Comparative Examples 9 to 10 Composite yarns using a multifilament yarn having a crimping rate of 8% (Comparative Example 9) and a crimping rate of 33% in place of the polyamide multifilament yarn having a crimping rate of 23% in Example 5. Was prepared, a mop was prepared using the yarn, and the same practical evaluation as in Example 1 was performed. The results are shown in Table 2. When the crimping ratio of the multifilament yarn was 8%, the wiping-off property for earth and sand was poor. Further, when the crimping rate was 33%, the soil-wipeability was good, but cotton waste was firmly entangled with the crimped portion during washing and was inferior in washability.

[0043]

[Table 2]

[0044]

EFFECTS OF THE INVENTION The long-short composite yarn for mop of the present invention is, like the cotton mop, excellent in the wiping property of cotton dust and dirt and sand, the washable property of the cotton dust, and the mop yarn by washing which is a defect of the cotton mop. It is possible to provide a mop which can improve the damage of the and can greatly improve the durability. Further, the mop of the present invention has better drying property than a 100% by weight cotton product, and is effective in terms of hygiene and reduction of energy used for drying.

[Brief description of drawings]

FIG. 1 is a perspective view showing an embodiment of a manufacturing method for obtaining a composite yarn of the present invention.

FIG. 2 is an enlarged explanatory view of a portion where a staple component and a multifilament component are combined.

[Explanation of Codes] 1: Polyamide multifilament yarn 2: Tension device 3: Guide 4: Top roller 5: Front top roller 6: Front bottom roller 7: Collector 8: Apron roller 9: Back roller 10: Staple fiber 11: Snell Guide 12: Traveler 13: Composite yarn 14: Bobbin

Claims (3)

[Claims] 1. A long-short composite spun yarn comprising a polyamide multifilament crimped yarn having a total fiber fineness of 500 denier or more and a crimp ratio of 10 to 30%, and a polyamide staple fiber having a single fiber fineness of 5 denier or less and a fiber length of 76 mm or less. And the mixing ratio of the polyamide staple fibers is 20.
A long and short composite spun yarn for a mop, wherein the polyamide staple fiber is about 80% by weight, and the polyamide multifilament crimped yarn is wound into a real twist. 2. The long-short composite spun yarn for mop according to claim 1, wherein the single filament fineness of the polyamide multifilament crimped yarn is 5 denier or more. 3. A mop comprising the long-short composite spun yarn for mop according to claim 1 or 2.