JP4199242B2 - Pile yarn and dust control mop for dust control mop - Google Patents

Description

  The present invention relates to a pile yarn obtained by thermally fusing a polyester multifilament obtained from a polyester resin containing a recycled polyethylene terephthalate resin and a binder synthetic fiber, and a dust control mop using the pile yarn.

  Dust control mops are designed to effectively collect dust, cotton dust, and other dust indoors, and are used to hold mop-type dust control mops in which a large number of pile yarns are planted on a base fabric, and sheet-like nonwoven fabric. A sheet-type dust control mop is generally known. The pile yarn in the dust control mop, in which a large number of pile yarns are planted on the base fabric, is made by twisting multifilaments consisting mainly of spun single yarn, which increases the surface area of the pile yarn that comes into contact with dust, and the nonwoven fabric. The wiping property is superior to the dust control mop. Further, the pile yarn not only effectively collects dust, but also has toughness so that it does not fray during use or repeated washing and does not generate fiber waste.

  Conventionally, pile yarns for dust control mops are made from natural fibers such as cotton, chemical fibers such as nylon, acrylic, and polyester, and new unused fibers are usually used.

In addition, pile yarns that satisfy the requirement not only to collect dust effectively but also to prevent fraying and fiber waste have already been manufactured. For example, Japanese Patent No. 2509118 discloses a composite using heat-sealing fibers. The production of yarn is described. The above publication describes a composite yarn in which cellulosic regenerated fiber multifilaments and thermoplastic synthetic fiber multifilaments are melted and fixed with heat-bonding fibers. As another example, Japanese Patent Application Laid-Open No. 2004-113478 describes a dust control mop made of cotton, synthetic fiber, and reinforcing chemical fiber. Specifically, polyester or nylon that is synthetic fiber is used for recycled cotton. As a reinforcing fiber, it is described that a rayon is twisted and heat-sealed. As described above, in order to eliminate fraying of pile yarn in the mop, a method of performing heat fusion using fibers having different melting points is known, and polyester fibers are particularly excellent in wear resistance and durability. Since it has a high melting point, it is often used as a composite material for pile yarn. However, the pile yarn using polyester fiber in the dust control mop is tough and difficult to fray, but in reality, the fusing property with the heat-fusing yarn is not sufficient, and fraying occurs due to washing, and the pile thickness is reduced. As a result, there was a problem that the cleaning efficiency was deteriorated and the function as a dust control mop was lowered.
Japanese Patent No. 2509118 JP 2004-113478 A

  Therefore, the problem to be solved by the present invention is that the multifilament and the binder synthetic fiber are sufficiently heat-sealed in order to maintain the thickness of the pile yarn without fraying by washing and to maintain the cleaning efficiency. It is to provide a pile yarn and a dust control mop using the pile yarn.

  As a result of diligent research, the present inventor has used a recycled polyethylene terephthalate resin (recycled PET resin) having excellent abrasion resistance and durability as well as a high melting point as in the case of the polyester fiber, or recycled PET as a new polyester resin. It has been found that a pile yarn that does not cause fraying by washing can be obtained by blending the resin, and the present invention has been completed.

  That is, the present invention twists a polyester multifilament obtained by twisting 400 to 500 single yarns having a thickness of 5 to 10 dT made of a polyester resin containing a recycled polyethylene terephthalate resin and a binder synthetic fiber, and heat-melts at 100 to 150 ° C. Provide pile yarn for dust control mop.

  Moreover, it is preferable that content of the said reproduction | regeneration polyethylene terephthalate resin is 30 to 80 weight%.

  Further, the recycled polyethylene terephthalate resin is preferably a resin regenerated from a used PET bottle.

  Furthermore, the binder synthetic fiber is preferably a polyester fiber or a polyamide fiber.

  Furthermore, the present invention includes a dust control mop obtained by flocking the pile yarn on a base fabric.

  Products made of recycled PET resin using used PET bottles have been widely used in recent years from the viewpoint of environmental conservation. Polyethylene terephthalate (PET) is a polymer of ester formed from terephthalic acid and ethylene glycol. Recycled PET resin also has excellent wear resistance and durability, and is also economical and inexpensive. Widely used.

  The recycled PET resin used in the present invention is known to deteriorate in physical properties from the virgin PET resin used in the production of PET bottles by the regeneration process, but the fiber virgin PET used as polyester fiber. Since the molecular weight is higher than that of resin, polyester fiber blended with recycled PET resin has higher heat-fusibility with binder synthetic fiber than conventional polyester fiber, thus preventing fraying of pile yarn due to washing. It becomes possible to maintain the cleaning efficiency. Further, by reducing the single yarn fineness of the polyester multifilament containing the recycled PET resin, the surface area is increased and the fusion efficiency with the binder synthetic fiber is increased.

  The pile yarn of the present invention not only has the original function of a mop that effectively collects dust, but also the pile yarn is tough and has the effect that it will not fray and not generate fiber waste even when used or repeated washing In addition, the dust control mop of the present invention using this pile yarn has the effect that the pile yarn is not frayed even by repeated washing, the pile yarn thickness is maintained, and the cleaning efficiency is maintained. .

  In pile yarns for dust control mops consisting of pile yarn and pile fabric, the pile yarn of the present invention uses recycled PET resin alone or blends recycled PET resin with new polyester resin for fibers. It is made of a polyester multifilament made of a single yarn of a polyester resin and a binder synthetic fiber, which are produced by heat-sealing and fixing them.

  The single yarn (raw yarn) containing the recycled PET resin is obtained by spinning a polyester resin containing 30 to 100% by weight, preferably 30 to 80% by weight of the recycled PET resin. Recycled PET resin is a resin recycled from used and discarded PET, typically from used PET bottles. The polyester resin used for the raw yarn may be a recycled PET resin alone, or a mixture of a recycled PET resin and a new polyester resin for fibers (virgin PET resin for fibers). As the new polyester resin for fibers, any polyester resin usually used for fibers may be used, and examples thereof include polyethylene terephthalate, polytrimethylene terephthalate, and polybutylene terephthalate. Polyethylene terephthalate is excellent in strength, heat resistance, etc. It is preferable in that the price is low and the economy is excellent. When the recycled PET resin is mixed with a new polyester resin, the content of the recycled PET resin may be 30% by weight or more, and the whole may be the recycled PET resin, but preferably 30 to 80% by weight. When the recycled PET resin is less than 30% by weight, the fusion with the binder synthetic fiber becomes incomplete and fraying is likely to occur.

  The raw yarn is preferably an original yarn that is spun after blending a colorant before spinning the polyester resin. A commercially available colorant may be used to form the original yarn. Specifically, as the colorant, carbon black, anthraquinone colorant, dioxazine colorant, phthalocyanine colorant, condensed azo colorant, perylene System colorants, thioindigo colorants, titanium dioxide and the like.

  In addition to the colorant, additives such as antibacterial agents can be added to the polyester resin as necessary.

  In the raw yarn obtained by spinning the polyester resin containing the recycled PET resin, the single yarn fineness is 5 to 10 dT, preferably 5 to 7 dT. Since the surface area increases as the single yarn fineness decreases, the contact between the binder fiber melted by heat and the raw yarn is improved, and the thermal fusion efficiency is improved. When the original yarn is thinner than 5 dT, fraying due to yarn breakage may occur. When the single yarn is thicker than 10 dT, the heat fusion with the binder synthetic fiber may be incomplete, and the mop yarn may fray. The spinning can be performed by a known method such as a melt spinning method.

  The polyester multifilament (recycled PET yarn) is produced by twisting 400 to 500, preferably 420 to 450, single yarns of a polyester resin containing a recycled PET resin. The twisting can be performed by a known method such as a method using a ring twisting machine. In the present invention, twisting is preferably performed with a twist number of 100 to 200 T / m, preferably about 140 to 180 T / m. The fineness of the recycled PET yarn is about 1000 to 2500 dT, and preferably about 1000 to 2200 dT in order to sufficiently fuse the binder synthetic fiber. Moreover, as a pile yarn for mops, in order to effectively collect the dust, a yarn obtained by twisting a plurality of regenerated PET yarns prepared by twisting them together is preferable, and the fineness is about 2000 to 5000 dT. It is preferable. Next, one or more of the obtained recycled PET yarns are twisted with binder synthetic fibers and heat-sealed to produce pile yarns. In this case, the twist is about 100 to 200 T / m, preferably about 140 to 180 T / m, in order to sufficiently heat-bond with the binder synthetic fiber.

  The binder synthetic fiber used in the present invention is preferably a heat-sealing yarn containing a thermoplastic resin. The pile yarn is produced by heat-setting within the range of the melting temperature difference between the recycled PET yarn and the heat-sealing yarn. Therefore, as the heat-sealing yarn used in the present invention, a low melting point polyester fiber or polyamide fiber having a melting temperature of 80 to 130 ° C. is preferable, and a commercially available one may be used. For example, there is a nylon fusion yarn of 130 ° C. high temperature type which is a polyamide fiber having a low melting point. Further, in order to perform effective heat fusion with the recycled PET yarn, the heat fusion yarn used in the present invention preferably has a thickness of 80 to 300 dT. For example, a 200D (about 222 dT) low-melting point nylon multifilament yarn satisfying such a condition is available. For example, a commercially available Joiner (registered trademark) manufactured by Fujibo Holdings Co., Ltd. is available.

  The recycled PET yarn and the heat-sealing yarn are twisted together, and the twisted yarn is heat-sealed at 100 to 150 ° C. The twisted yarn is preferably produced by twisting so that the heat-sealing yarn is located at the center of the pile yarn, so that subsequent heat-sealing can be sufficiently achieved. Therefore, as the twisting method, a known twisting method may be used as long as the above conditions are satisfied. A specific example of the twisting method will be described below. For example, 2 to 6 regenerated PET yarns are twisted in the same twisting direction as the regenerated PET yarn to produce 2 to 6 twisted yarns. A heat fusion yarn is arranged between the two to six twisted yarns and twisted in the opposite direction to the lower twist so that the heat fusion yarn is arranged at the center of the pile yarn.

  Heat fixation can be performed as follows. For example, the twisted yarn of recycled PET yarn and heat-sealed yarn is wound on a fissels, and then the twisted yarn is heat-sealed at a pressure of 750 hPa and a temperature of 100 to 150 ° C. to produce a pile yarn. The fusion temperature is preferably 100 to 150 ° C. from the melting temperature difference range between the heat fusion yarn having a melting point of 80 to 130 ° C. and the melting point of the recycled PET resin. If the temperature exceeds 150 ° C., the physical properties of the heat-sealed yarn may be deteriorated. A known method may be used as the heat fusion method, and the heat fusion can be performed by heating at a temperature of 100 to 150 ° C. or by heating at a temperature of about 90 to 130 ° C. under wet heat.

  The dust control mop according to the present invention can be performed by a conventional method for producing a mop. For example, the pile yarn is fixed to the base fabric, and a pocket for fixing the holder on the upper surface of the base fabric is sewn and necessary. Accordingly, a bias tape can be produced by trimming the base fabric in order to reinforce the base fabric.

  Thick canvases are generally used for mops, such as cotton canvas, cotton twill canvas, vinylon canvas, polyester canvas, etc., and those coated with these.

  The bias tape is made of hemp, cotton, chemical fiber, or the like, but the bias tape used for the dust control mop preferably contains polyester fiber with excellent wear resistance and durability.

  In the base fabric for fixing the pile yarn used in the dust control mop of the present invention, and a bias tape used as necessary, a commercially available product can be used, but a recycled PET resin used for the pile yarn is blended. It can be produced using a single yarn of polyester resin.

  That is, when producing a base fabric composed of a single yarn of a polyester resin blended with the recycled PET resin used in the present invention, it is preferably produced using a single yarn having a single yarn fineness of 5 to 10 dT.

  Moreover, when producing a bias tape using the single yarn of the polyester resin which mix | blended the recycled PET resin used by this invention, it is preferable to produce using the single yarn of 1-5 dT single yarn fineness.

  The pile yarn for dust control mop according to the present invention will be described in Examples.

(Example 1)
The pile yarn for mop of the present invention was produced as follows.

  First, a polyester resin prepared by mixing 30 parts by weight of a recycled PET resin prepared from a used PET bottle and 70 parts by weight of a new polyester resin for fibers was spun by a melt spinning method to produce a single yarn. Two polyester multifilaments obtained by aligning 432 single yarns having a fineness of 5.0 dT were produced and Z-twisted at 140 T / m to produce a recycled PET yarn. The two recycled PET yarns were twisted in the same direction as the recycled PET yarn, that is, Z-twisted to produce a twisted yarn having a twist number of 180 T / m, and two twisted yarns were produced. Between the two twisted yarns obtained, one heat-sealed yarn 200D, Joiner (registered trademark) manufactured by Fujibo Holdings Co., Ltd., is added and twisted with an S twist of 140 T / m, and twisted. A pile yarn for mop was used.

  Next, the pile yarn was wound around a fissels, and the fissions were subjected to wet heat treatment at 130 ° C. with a pressure of 750 hPa for 10 minutes to melt the heat-sealed yarn in the pile yarn.

(Example 2)
A pile yarn for mop was produced in the same manner as in Example 1 except that a single yarn was produced by spinning using a polyester resin in which 50 parts by weight of recycled PET resin and 50 parts by weight of a new polyester resin for fibers were mixed. .

(Example 3)
A pile yarn for mop was produced in the same manner as in Example 1 except that a single yarn was produced by spinning using a polyester resin in which 80 parts by weight of recycled PET resin and 20 parts by weight of a new polyester resin for fibers were mixed. .

(Comparative Example 1)
A pile yarn for mop was produced in the same manner as in Example 1 except that a new polyester resin for fibers containing no recycled PET resin was used.

(Comparative Example 2)
Mop pile yarn was produced in the same manner as in Example 1 except that two 432 polyester multifilaments having a single yarn fineness of 2.5 dT were used to produce a recycled PET yarn.

(Comparative Example 3)
Mop pile yarn was prepared in the same manner as in Example 1 except that a recycled PET yarn was prepared using two 96 polyester multifilaments having a single yarn fineness of 15 dT.

(Experimental example 1)
Pile Yarn Durability Test by Boiling The durability of the six pile yarns was evaluated by examining the fraying conditions of the six types of mop pile yarns according to the above examples and comparative examples. 350 ml of each tap water was heated and boiled in a 500 ml beaker. Thereafter, 10 pile yarns cut to 15 cm were bundled into one set, and each pile yarn was put into each of the above beakers and boiled for 30 minutes.

  After boiling, the pile yarn was taken out and evaluated for fraying. This test method can evaluate the pile yarn of the present invention as an accelerated test of durability of a pile used as a mop. The evaluation was made visually and the following criteria were set. The length frayed from the end in a pile length of 15 cm was measured. This experiment was carried out for each example and comparative example in five series, and the average was evaluated based on the following criteria.

[Standard for unwinding pile yarn]
No fraying / 15cm ・ ・ ・ ○
Fray length 0-1cm / 15cm ・ ・ ・ △
Frayed length 1cm or more / 15cm ... ×

  From the results of Table 1, the pile yarn containing only the new polyester resin for fibers not containing the recycled PET resin was frayed by boiling, but the pile yarn using the recycled PET yarn was not frayed. As a result, it was shown that the recycled PET yarn according to the present invention is superior in adhesiveness to the heat-sealing yarn as compared with the yarn made of only a new polyester resin for fibers.

Claims (4)

A twisted yarn obtained by twisting a plurality of polyester multifilaments obtained by twisting 400 to 500 single yarns having a thickness of 5 to 10 dT made of a polyester resin containing a recycled polyethylene terephthalate resin, and a binder synthetic fiber are twisted together, and 100 to 100 A pile yarn for dust control mop, heat-sealed at 150 ° C. ,
A pile yarn in which the content of the recycled polyethylene terephthalate resin is 30 to 80% by weight. The pile yarn according to claim 1, wherein the regenerated polyethylene terephthalate resin is a resin regenerated from a used PET bottle. The pile yarn according to claim 1 or 2, wherein the binder synthetic fiber is a polyester fiber or a polyamide fiber. A mop having a pile yarn and a base fabric in which the pile yarn is planted, wherein the pile yarn is twisted from 400 to 500 single yarns having a thickness of 5 to 10 dT made of a polyester resin containing a recycled polyethylene terephthalate resin. and twisting that twisted multifilament plurality of pull aligned with, twisted and binder synthetic fibers, Ri pile yarn der obtained by heat fusion at 100 to 150 ° C., the content of recycled polyethylene terephthalate resin is 30 to 80 wt% der Rukoto and said, dust control mop.