JP2013017974A - Fiber structure for painting and paint roller - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a fiber structure for painting and a paint roller having excellent painting performance, specifically a fiber structure for painting and a paint roller maintaining excellent painting performance even for highly viscous paint and paint containing pigment of comparatively large particles.SOLUTION: The fiber structure for painting includes a fiber layer for painting 11 arranged on at least one surface of a ground weave 12, and the fiber layer for painting 11 includes crinkle fiber. The fiber layer for painting 11 is formed using a number of special composite yarns 14 erected from the ground weave 12, the special composite yarns 14 are obtained by twisting plural finished yarns, and the finished yarns are obtained by spinning while imparting mountains 17a and valleys 17b by crinkling of filaments 17. The special composite yarn 14 includes an untwisted section 20b on the distal end side. The untwisted section 20b is a section where twisting of the special composite yarn 14 is released and the mountains 17a and the valleys 17b by crinkling of the filament 17 are maintained.

Description

  The present invention relates to a coating fiber structure and a paint roller.

  In a painting tool such as a paint roller, paint is applied to the fiber structure for painting. The quality of the coated state is largely dependent on the paint to be applied, and of course depends greatly on the structure of the coating fiber structure. The coating fiber structure has a coating fiber layer on at least one surface of a knitted fabric or woven fabric, and a pile is used as the coating fiber layer (Patent Document 1), The thing (patent documents 2, 3) using a cut pile is known conventionally. Among them, Patent Document 3 discloses that the ground texture and the coating fiber layer contain crimped fibers, and those that have been defibrated and processed are used. .

  More specifically, in Patent Document 3, when forming a knitted fabric with a weaving and weaving machine, a yarn containing a heat-fusible crimped fiber is supplied as a cut pile yarn, and heat fusion is performed on one side of the ground structure. A fiber structure having a standing fiber layer composed of adhesive crimped fibers is produced. Then, after the fiber structure cut pile yarn is defibrated using a splitting machine, the other surface (back surface) without the standing fiber layer is directed upward, and water is sprayed from the back surface, Dry heat treatment (hot air treatment or the like) is performed at a temperature higher than the melting point of the fusible crimped fiber. As a result, there can be obtained a coating fiber structure in which a net-like fused layer is present inside the standing fiber layer and a bulky bulky layer is present on the surface side of the standing fiber layer outside the mesh-like fused layer. There is a disclosure. Also, a coating fiber structure in which a porous skin layer having a thickness of 100 to 1000 μm by fusion of the heat-fusible crimped fibers constituting the standing fiber layer is present on the surface of the standing fiber layer. The body is also disclosed.

  Although the fiber structure for coating of Patent Document 3 uses a heat-crimped yarn and further forms a porous skin layer, there is an advantage that the coated surface by the paint roller becomes smooth. There are indications that they are easily entangled and are not suitable for rust-proof paints containing a relatively large amount of pigment or paints with high viscosity. In particular, it has been pointed out that the pigment is clogged under the bulky layer or the porous skin layer.

Japanese Utility Model Publication No. 2-4679 JP 2010-53502 A JP 2002-302863 A

  An object of the present invention is to provide a coating fiber structure and a paint roller having good coating performance. In particular, it is an object of the present invention to maintain good coating properties even for high-viscosity paints and paints having a relatively high pigment content.

The present invention provides a coating fiber structure having a ground structure and a coating fiber layer provided on at least one surface of the ground structure, wherein the coating fiber layer includes crimped fibers. The fiber layer is composed of a large number of special composite yarns erected from the ground structure, and the special composite yarn is obtained by twisting a plurality of processed yarns, The processed yarn is produced by applying crimped peaks and valleys to a filament constituting the processed yarn, and the special composite yarn in the standing state includes an untwisted portion at least on the tip side. The untwisted portion is a portion where the twist of the special composite yarn is released, and peaks and valleys due to crimping of the filament are maintained. By providing a fiber structure , To solve the above problems.
In the present invention, the special composite yarn in the standing state is provided with a twisted yarn portion on the base end side and the untwisted portion on the tip end side, and the twisted yarn portion is the above-mentioned special composite yarn. It is a portion in which twist is maintained, the special composite yarn is obtained by twisting a plurality of processed yarns, and is provided with convex portions and concave portions due to twisting alternately in the yarn direction, A recessed part can be implemented as what each thread forms is formed by connecting the crests and troughs of each filament spirally.
Further, the present invention is carried out on the assumption that the processed yarn uses the same number of twists during twisting in false twisting, and the number of protrusions is the same as the number of twists per meter. can do.
And this invention provides the paint roller which attached to the roll for coating by using said fiber structure for a coating as a coating surface.

  The present invention has been able to provide a coating fiber structure and a paint roller having good coating performance. The coating fiber structure and the paint roller according to the present invention can be used for applying various paints, and particularly good for high-viscosity paints and paints having a relatively high pigment content. Application properties can be maintained.

It is a disassembled perspective view of the paint roller which concerns on embodiment of this invention. It is an enlarged view of the fiber structure for painting concerning an embodiment of the invention. The special composite yarn used for the fiber structure for painting is shown, (a) is a schematic diagram showing a natural state without tension, and (b) is a schematic diagram showing a stretched state. It is a conceptual diagram which shows the manufacturing apparatus of the same special composite yarn.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is an exploded perspective view of a paint roller according to an embodiment of the present invention. This paint roller is for a painting roll 1 and a painting roller for rotatably supporting the painting roll 1. A support shaft 6 and a bearing member are provided. The support shaft 6 is made of a material having rigidity such as a metal, and a handle 5 is provided on the base end side of the support shaft 6. A bearing member is attached to the distal end side of the support shaft 6. This bearing member is composed of two divided cylinder members 2 and 3 and a fixed body 4 incorporated therein. The cylindrical members 2 and 3 are fixed inside the coating roll 1 in a state in which the fixed body 4 is rotatably included. The fixed body 4 is fixed to the support shaft 1 by inserting the support shaft 1 therein. As a result, the coating roll 1 is rotatably supported on the support shaft 6, and the coating roll 1 including the coating rotates on the application surface, whereby the coating is applied to the application surface. A coating roll 1 includes a cylindrical support 10 having a relatively high rigidity such as a hard synthetic resin, and a coating fiber structure 11 bonded to the support 10 by heat fusion or an adhesive. It is configured.

Next, the coating fiber structure 11 will be described in more detail.
As shown in an enlarged view in FIG. 2, the coating fiber structure 11 has a standing fiber layer 13 on one side of a ground structure 12 of a woven fabric. In addition, although it was set as the woven fabric in the example of FIG. 2, it can implement also with a knitted fabric. The standing fiber layer 13 includes a large number of cut piles. The yarn constituting the cut pile is composed of a special composite yarn 14 of multifilament such as thermoplastic synthetic fiber such as polyester, polyamide, polypropylene, acrylic polymer, polyvinyl alcohol, polyvinylidene chloride and the like. Although it is possible to use yarns other than the special composite yarn 14 together, it is desirable that one-fourth or more of the total number of cut piles is the special composite yarn 14, more preferably more than half to the total amount of the special composite yarn. It is constituted by the thread 14. If the amount of the special composite yarn 14 is too small, the effect of the present invention is hardly exhibited, but it is not always essential to carry out the entire amount due to the cost.

The type of other fibers different from the special composite yarn 14 is not particularly limited. For example, crimped or non-crimped synthetic fibers such as polyester, polyamide, polypropylene, acrylic polymer, polyvinyl alcohol, and polyvinylidene chloride. Examples thereof include semisynthetic fibers such as viscose and rayon, cotton, wool, silk, and the like, and one or more of these can be used. When other fibers are used in combination, it is preferable that the two fibers are sufficiently mixed and dispersed. However, an application body having a plurality of types of properties in the axial direction is obtained with one coating roll 1. In some cases, it need not be uniformly dispersed.

The special composite yarn 14 will be described in more detail with reference to FIG. FIG. 3 shows a special composite yarn 14, (a) is a schematic diagram showing the special composite yarn 14 in a natural state without tension, and FIG. 1 (b) shows the special composite yarn 14 in a stretched state. It is a schematic diagram.

The special composite yarn 14 is a twisted yarn obtained by twisting a plurality of processed yarns. The special composite yarn 14 includes convex portions 15 and concave portions 16 on the yarn surface alternately in the yarn direction. The convex portions 15 and the concave portions 16 are generated by twisting the special composite yarn 14, and are each spirally connected in the yarn direction.

The processed yarn is a yarn produced by subjecting a multifilament yarn to false twisting, and is preferably made of a rectified thermoplastic resin filament. The multifilament yarn is a yarn obtained by aligning a plurality of synthetic fibers (filaments) in the yarn direction. Further, the false twisting process is a processing method in which a twisting process for adding a twist to a multifilament yarn is performed and then an untwisting process for untwisting is performed. In the multifilament yarn subjected to the false twisting process, natural filament-like crimps (crimps) are imparted to each filament. The crimped filaments extend in a wavy shape, and have a peak at the top of the wave and a valley at the bottom of the wave in plan view. In addition, this filament is extended so that a three-dimensional wave shape may be made, and the crest and trough are each formed in the direction of 360 degrees around the yarn.

The plurality of processed yarns are used by false twisting under the same conditions, and these processed yarns are evenly twisted to form one special composite yarn 14. The filaments 17 constituting the respective processed yarns are intertwined so that the peaks 17a and the valleys 17b are spirally connected to each other. And the convex part 15 of the said special composite thread | yarn 14 is formed when the peaks 17a of the filament 17 continue in a spiral shape, and the said recessed part of the said special composite thread | yarn 14 is formed by connecting the troughs 17b of the filament 17 spirally. 16 is formed. In addition, each processed yarn does not have a clear distinction such as a core sheath by being twisted evenly under the same conditions, and each processed yarn is in a state of a special composite yarn 14. It is difficult to discriminate one from each other.

The special composite yarn 14 is a twisted yarn obtained by uniformly twisting a plurality of processed yarns that have been false twisted under the same conditions. Therefore, like the conventional twisted yarn, the thickness is substantially uniform, and the cross section of the yarn has a substantially perfect circle shape. Further, in this special composite yarn 14, the convex portions 15 and the concave portions 16 are formed by connecting the peaks 17 a and the valleys 17 b of the filaments 17, so that there are gaps 18 between the filaments 17. doing. Since the gap 18 is provided, the special composite yarn 14 is soft and light in weight as compared with the conventional twisted yarn having the same thickness. And since this special composite yarn 14 has the crevice 17a and troughs 17b of the filament 17 and has the clearance gap 18 between the filaments 17, it has elasticity and is moderate. Has waist strength.

More specifically, when a tension or the like is applied to the special composite yarn 14, first, each filament 17 is elongated by making each peak 17a and valley 17b substantially linear. Along with the elongation of each filament 17, the entire yarn of the special composite yarn 14 is stretched as each convex portion 15 and each concave portion 16 stretch while filling the gap 18. At this time, the filaments 17 are three-dimensionally entangled in the direction of 360 ° around the yarn while connecting the peaks 17a and the valleys 17b. Further, when the tension or the like is lost and the entire yarn contracts, the filaments 17 contract, and the entire yarn contracts by returning to the original crimped state. And since each convex part 15 and each recessed part 16 are each extended, it becomes a thread | yarn which has a big elasticity as the special composite yarn 14 whole.

The conventional twisted yarn is produced by twisting a plurality of processed yarns while applying a certain tension. For this reason, in the conventional twisted yarn, the filaments to which crimps are imparted are entangled regardless of peaks or valleys, and almost no gap is formed between the filaments. Furthermore, the entangled filaments regardless of the peaks or valleys are bound to each other. Therefore, in the conventional twisted yarn, there is no gap between the filaments at each convex part and each concave part, and since the filaments are restrained from each other and are difficult to expand and contract, they cannot be expanded and contracted at each convex part and each concave part, and the stretchability is reduced. It is a thread that does not have at all.

Next, a method for manufacturing the special composite yarn 14 will be described.
The special composite yarn 14 is manufactured using a manufacturing apparatus as shown in FIG. In this manufacturing apparatus, the first feed roller 21 is disposed on the most upstream side (upper side in the drawing), and in order from the upstream side downstream (downward in the drawing) from the first feed roller 21. A touch heater 22 and a second feed roller 23 are provided. The first feed roller 21 and the second feed roller 23 support the processed yarn 19 fed to the manufacturing apparatus so as to satisfy the overfeed condition therebetween. The touch heater 22 heats the processed yarn 19 in contact with the inner surface when the processed yarn 19 under overfeed conditions passes through the inside, thereby maintaining the twist of the processed yarn 19 to obtain the special composite yarn 14. Is. Note that the overfeed condition is that the processing yarn 19 is interposed between the first feed roller 21 and the second feed roller 23 by increasing the rotation speed of the first feed roller 21 compared to the rotation speed of the second feed roller 23. Is the condition that makes the state relaxed. A drum 24 and cheese 25 are provided on the side of the second feed roller 23. The drum 24 and the cheese 25 are collected by drawing the special composite yarn 14 out of the manufacturing apparatus and winding the special composite yarn 14 around the cheese 25.

In the production of the special composite yarn 14, the process includes a twisting process in which a plurality of processed yarns 19 are twisted, and a heat treatment in which the processed yarn 19 after the twisting process is heated under overfeed conditions to hold each twist. It is divided into processes.

The twisting process is performed in advance by using a twisting machine or the like other than the manufacturing apparatus. In this twisting step, a processed yarn is used that is produced by subjecting a multifilament yarn to false twisting. In this false twisting process, it is preferable that the multifilament yarn is strongly twisted at the time of twisting treatment as compared with the conditions for obtaining a conventional false twisted yarn. Specifically, it is preferable to twist the multifilament yarn so that the number of twists is 2800 to 3000 t / m as the twisting treatment, and to heat and hold the twist by this twisting at 215 to 230 ° C. This is to make the crests and troughs of each filament easier to connect by increasing the crimp applied to each filament. And this twisting process is performed by setting the number of twists to 60 to 80 t / m. The number of twists is weaker than that for obtaining the conventional twisted yarn. In this way, by adjusting the number of twists to a weak twist and suppressing the processing yarns from tightening each other, it is easy to align the crests and troughs of each filament during the heat treatment step.

In the twisting step, 4 to 16 processed yarns are twisted. Further, the processed yarn having a thickness of about 165 dtex (150 denier) is used. As a result, the special composite yarn has a thickness of 660 to 6670 dtex (600 to 6000 denier), which is a thicker yarn than the conventional twisted yarn. The processed yarn preferably has a boiling water shrinkage of 8.0% or more and a crimp shrinkage of 35% or more. This is because the gap 18 is expanded by heating and shrinking the processed yarn during the twisting process.

The heat treatment step is performed using a plurality of processed yarns 19 twisted in the twisting step and the manufacturing apparatus. In the heat treatment step, the overfeed rate between the first feed roller 21 and the second feed roller 23 is 20 to 100%. In other words, the rotation speed of the first feed roller 21 is increased by 20 to 100% with respect to the second feed roller 23. When the overfeed rate is less than 20%, tension is applied to the work yarn 19 between the first feed roller 21 and the second feed roller 23, and it becomes difficult for peaks and valleys of each filament to be aligned. On the other hand, when the overfeed rate exceeds 100%, no tension is applied to the processed yarn between the first feed roller 21 and the second feed roller 23, and the peaks and valleys of each filament cannot be aligned. In addition, there is a problem that the processed yarn is clogged between the first feed roller 21 and the second feed roller 23.

The touch heater 22 is set so that the heating temperature is 220 to 300 ° C. When the heating temperature is less than 220 ° C., the twist applied in the twisting process is not sufficiently maintained, and when the special composite yarn is stretched, the filaments are displaced from each other, and the special composite yarn is in its original state. Can no longer shrink. On the other hand, when the heating temperature exceeds 300 ° C., twists are excessively retained, and problems such as filaments constraining each other or filaments being thermally welded occur.

The processed yarn under the overfeed condition moves slowly while being rotated so as to roll inside the touch heater 22 by being loosened while being gripped by the first feed roller 21 and the second feed roller 23. At this time, since the plurality of processed yarns are in a weakly twisted state, the twist thereof is slightly loosened, and the crests and troughs of each filament are aligned due to the influence of rotation or the like. And the state where the peaks and valleys of each filament are aligned is heated and held, and the special composite yarn 14 is obtained. In the special composite yarn 14, the number of the convex portions 15 per 1 m is the same as the number of twists of the multifilament yarn in the twisting process of the false twisting process. This is because 15 is formed by connecting filament crests, and the number of filament crests depends on the number of twists in the twisting process of false twisting. Therefore, in the special composite yarn 14, the number of the convex portions 15 per 1 m is 2800 to 3000.

Next, the coating fiber structure 11 is knitted or woven using the special composite yarn 14. Although it is possible to use yarns other than the special composite yarn 14 together, it is preferable that one-fourth or more of the total number of cut piles is the special composite yarn 14, more preferably more than half to the total amount. The composite yarn 14 is used. If the amount of the special composite yarn 14 is too small, the effect of the present invention is hardly exhibited, but it is not always essential to carry out the entire amount due to the cost.

The coating fiber structure 11 of the present invention may be manufactured by any method as long as the above-described special composite yarn 14 is included in the standing fiber layer 13, but an example of the manufacturing method is shown. The coating fiber structure 11 is produced by using a special composite yarn 14 when manufacturing a fabric such as a single circular knitted fabric, a double raschel knitted fabric, a multiple woven fabric, or a laminated nonwoven fabric using a knitting / weaving machine, a nonwoven fabric manufacturing apparatus, or the like. A loop pile fabric is produced by supplying as a pile yarn, and the obtained loop pile fabric is subjected to a shearing machine to form a cut pile. Thereby, the fiber structure 11 for application | coating which has the standing fiber layer 13 which contains the special composite yarn 14 in the ratio of 25-100 mass% is manufactured. In this cut pile, the filaments 17 constituting the special composite yarn 14 are separated from each other with the peaks 17a and valleys 17b remaining. If necessary, the fiber can be defibrated using a known defibrating machine, a hair splitting machine, a raising apparatus or the like. It is appropriate that this defibration is performed at 20% or more of the total height of the cut pile. The base end side of the cut pile is provided with a twisted yarn portion 20a that is not defibrated and an untwisted portion 20b on the distal end side, and the twisted yarn portion 20a is 0 in the proportion of the length in the non-tensioned state. It is preferable that -80% and untwisted portion 20b be 20-100%. More preferably, the twisted yarn portion 20a is 50 to 80%, the untwisted portion 20b is 20 to 50%, and most preferably, the twisted yarn portion 20a is 50 to 70% and the untwisted portion 20b is 30 to 50%. The twisted yarn portion 20a plays a role of giving elasticity to the cut pile to increase the waist strength, and the untwisted portion plays a role of sufficiently containing the coating material, so that it is preferable to defibrate at these ratios.

The untwisted portion 20b on the front end side is formed by leaving the peaks 17a and the valleys 17b, so that it can hold the paint well and hold it, and has appropriate elasticity. As described above, the twisted yarn portion 20a on the base end side is rich in elasticity, so that an appropriate repulsive force can be generated, and so-called waist strength can be imparted. Therefore, even when a highly viscous paint is applied, good application performance can be continued. In addition, the pile density can be reduced because the paint holding property of the cut pile is good. Specifically, the number of single yarns was 288 in the past, but in the present invention, it can be implemented as 180. Even in a paint having a high pigment content such as a rust preventive paint, the pigment particles are not clogged between the cut piles, and a good application state can be continued.
The coating fiber structure 11 according to the present invention can be used in various forms of coating members, and can be applied not only to the paint roller of FIG. 1 but also to a coating brush.

Examples are shown below to enhance the understanding of the present invention, but the present invention should not be understood to be limited to these Examples.
(Manufacture of special composite yarn 14)
Processed yarn: 264 decitex (240 denier) / 48 filament multifilament yarn made of polyester with a draw ratio of 1.57, twist number of 2,900 t / m, heating temperature during twisting of 220 ° C, in false twisting device False twisted yarn obtained by false twisting under the condition of the yarn speed at 100 m / m.
Thread thickness: 165 dtex (150 denier).
Number of processed yarns: 5.
Number of twists in the twisting process: 70 t / m
Touch heater temperature: 215-230 ° C.
Overfeed rate: 20 to 100%.
Yarn speed in the production apparatus: 100 m / m.
The special composite yarn 14 which is a twisted yarn having large stretchability can be obtained under the above processing conditions. Further, in this special composite yarn 14, the number of convex portions per 1 m was 2,900.

(Manufacture of fiber structure 11 for application)
The special composite yarn 14 woven as described above is woven by a loom, and has a standing fiber layer standing fiber layer 13 made of fibers (cut pile) containing the special composite yarn 14 at a ratio of 100% by mass. The fiber structure 11 was manufactured, and the cut pile yarn of the special composite yarn 14 was defibrated using a defibrating machine. The number of cut pile strains (number) is 390,000 / m ² , the untwisted portion is formed by untwisting a range of about 50% of the total height of the cut pile, and the coating fiber structure 11 having a hair length of 13 mm. It was created. This coating fiber structure 11 was bonded to 10 to complete the paint roller of FIG.

(Paint application amount test)
Using the completed paint roller, the following coating amount test was performed. The results are shown in Table 1. As a comparative example, a general interior / exterior finish paint roller “Bonparagon” (registered trademark) hair length 13 mm manufactured by PIA Corporation was used. The paint application amount test is to apply the paints of each paint manufacturer shown in Table 1, attach the paint to the roller and blend it well enough, measure the weight at that time (starting weight), Apply the paint on the flat coated surface while confirming the coating state according to the usual method. The application was terminated when faintness occurred in the coating state, the weight at that time (weight at the time of measurement) was measured, the difference from the above-mentioned weight at the start was obtained, and this was taken as the coating amount. For the coating amount in Table 1, the same test was performed three times, and the average value of three times was described. As shown in the lowermost part of Table 1, the ratio of the coating amount of the example and the comparative example was confirmed, and it was confirmed that the example achieved a good coating amount as compared with the conventional paint roller.

DESCRIPTION OF SYMBOLS 10 Support body 11 Application | coating fiber structure 12 Ground structure 13 Standing fiber layer 14 Special composite yarn 15 Convex part 16 Concave part 17 Filament 17a Mountain 17b Valley 18 Crevice 19 Processed thread 20a Twisted yarn part 20b Untwisted part

Claims (4)

In the coating fiber structure, which has a ground tissue and a coating fiber layer provided on at least one surface of the ground tissue, the coating fiber layer includes crimped fibers.
The coating fiber layer is
It is constructed using a number of special composite yarns erected from the ground structure,
The special composite yarn is obtained by twisting a plurality of processed yarns,
The processed yarn is produced by imparting a crest and a valley by crimping to the filament constituting the processed yarn,
The special composite yarn in the standing state is provided with an untwisted portion at least on the tip side thereof,
The untwisted portion is a portion where the twist of the special composite yarn has been released, and the peaks and valleys due to crimping of the filament are maintained. The special composite yarn in the standing state includes a twisted yarn portion on the proximal end side and the untwisted portion on the distal end side,
The twisted yarn portion is a portion where the twist of the special composite yarn is maintained,
The special composite yarn is obtained by twisting a plurality of processed yarns, and is provided with convex portions and concave portions by twisting alternately in the yarn direction,
2. The coating fiber structure according to claim 1, wherein the convex portion and the concave portion are formed by connecting each thread to each other in a spiral manner between the crests and troughs of the filaments. 2. The processed yarn, wherein the number of twists during twisting is the same in false twisting, and the number of protrusions per meter is the same as the number of twists. 2. The fiber structure for coating according to 2. A paint roller, wherein the fiber structure for a paint tool according to any one of claims 1 to 3 is attached to a paint roll as a paint surface.