JPH08291474A - Resin-treated textile and treating method - Google Patents

Abstract

PURPOSE: To obtain a light weight resin-treated textile having excellent stain and weather resistances and suitable as a curing mesh by treating polyester mesh cloth with a polyester polyurethane resin and applying a hot-melt adhesive to the cloth. CONSTITUTION: This resin-treated textile impregnated with 20-60wt.% of a polyester polyurethane resin is produced by dipping mesh cloth made of a polyester resin such as film gauze fabric in an aqueous emulsion of a polyester polyurethane resin, squeezing and drying the textile and curing the product. A hot-melt resin film having a melting point of <=180 deg.C is sandwiched between a pair of the resin-treated textiles and bonded by a knife coater or a high-frequency welder or a hot-melt resin having a melting point of <=180 deg.C is melted and bonded to resin-treated textile using a hot-melt gun.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a resin-processed cloth, and more particularly to a resin-processed cloth suitable for construction work and sun protection, and a processing method. More specifically, the present invention provides a resin-processed cloth that is lightweight, has excellent weather resistance and antifouling properties, and is extremely unlikely to cause a whitening phenomenon (cho-mark) in a folded portion, and a method for processing the same.

[0002]

2. Description of the Related Art Conventionally, as a resin-processed cloth for construction work, a mesh cloth made of organic fibers or inorganic fibers coated with vinyl chloride resin has been widely used. Vinyl chloride resins are preferably used because they have excellent antifouling properties and weather resistance, but when the coating amount is small, the sealing effect and flameproof property are insufficient. Therefore,
Large amount of resin (resin equal to or greater than fabric weight)
Since it is necessary to coat the fabric with the fabric, the fabric weight is inevitably large and the handleability is low, and a large amount of hydrogen chloride gas is generated during incineration. From the above,
It has been studied to prevent misalignment by using a net woven structure such as a entangled weave without performing resin processing.

[0003]

However, when it is attempted to obtain the effect of preventing misalignment due to the woven structure, etc., the fibers are directly exposed, so that the fiber performance (especially mechanical strength) gradually decreases, and the weather resistance is increased. There is a problem in terms of anti-fouling property and antifouling property. INDUSTRIAL APPLICABILITY The present invention does not substantially generate hydrogen chloride gas during incineration, is lightweight, has excellent antifouling property, weather resistance, and is difficult to expose the fibers even in the folded portion where the fibers are easily exposed (cho-mark occurs). It is an object of the present invention to provide a resin-treated cloth and a processing method.

[0004]

The present invention is directed to a resin-processed cloth comprising a polyester-based polyurethane resin adhered to a mesh-like cloth made of polyester-based fibers in an amount of 2 to 60% by weight, and a melting point of 180 ° C. or less. A processing method for bonding a hot melt adhesive is provided.

[0005]

BEST MODE FOR CARRYING OUT THE INVENTION The purpose of coating a resin on a mesh-like fabric is to provide a sealing effect, but it is also very important not to expose the fibers, that is, to impart weather resistance and stain resistance. is there. That is, when the fibers are exposed, the performance of the fibers is significantly deteriorated due to the exposure to sunlight or the like and the chemical reaction with other components, which makes long-term use difficult. Therefore, it is necessary to coat with a resin having excellent weather resistance so that the fibers are not directly exposed. Although it is relatively easy to coat the cloth with the resin in the flat portion of the resin-coated cloth, it is extremely difficult to maintain the state in the folded portion of the cloth. The resin-coated cloth is often folded at the time of storage or use, but the fibers are likely to be exposed at this folded portion (whitening phenomenon: cho-mark), which is a major factor of performance deterioration. If a large amount of resin is used, it is easy to prevent such a whitening phenomenon, but it is not possible to obtain a product that is lightweight and easy to handle.

From the above, the present inventors have found that by coating a fabric made of polyester fibers with a polyester polyurethane resin, an excellent resin-coated fabric that is lightweight and does not easily cause a whitening phenomenon can be obtained. It was Since the polyester-based urethane resin is flexible and has excellent affinity with the polyester-based fiber, the total weight of the fabric is 2 to 60.
An excellent effect can be obtained by coating an extremely small amount of resin, which is 3% to 30% by weight. If the resin adhesion amount is less than 2% by weight, the effect of preventing misalignment becomes insufficient, and if it exceeds 60% by weight, there is a problem in weight reduction. In order to prevent the occurrence of thread fraying during sewing or the like, it is preferable to adhere the thread by 5% or more. The basis weight is preferably 500 g / m ² or less, particularly 400 g / m ² or less, and the sealing force is preferably 3 kg or more, particularly preferably 5 kg or more.

When polyester-based resin is used, although chalk is less likely to occur, the resin hardens and the texture deteriorates after long-term use. Further, when a polyacrylic resin or the like is used, a chalk mark is generated, which causes inconvenience for long-term use. If the resin adhesion amount is increased, the chalk mark is less likely to occur, but the weight is reduced. There is a problem in terms. Even if a polycarbonate-based or polyether-based polyurethane resin is used, the same problem occurs and the effect of the present invention cannot be obtained.

The polyester type polyurethane referred to in the present invention means an aliphatic polyisocyanate and / or alicyclic polyisocyanate (A) and a lactone ring which is synthesized from a dicarboxylic acid and a diol component or which is opened. A polyurethane composed of the high-molecular diol (B) thus obtained. Specific examples of the polyisocyanate (A) include hexamethylene diisocyanate, methylcyclohexane diisocyanate (hydrogenated TDI), 4,4'-dicyclohexylmethane diisocyanate (hydrogenated MD).
I), isopropylidene bis (4-cyclohexyl isocyanate), isophorone diisocyanate, lysine diisocyanate, hydrogenated xylylene diisocyanate
And cyclohexane diisocyanate.

As the polymer diol (B), polyester diol having an average molecular weight of 500 to 500 is preferable. Specifically, ethylene glycol, propylene glycol, 1,4-butanediol, 1,5-pentanediol, 1,6-hexanediol, neopentyl glycol, 2-methylpropanediol. -Or other low-molecular diol with a low-molecular dicarboxylic acid such as glutanoic acid, adipic acid, pimelic acid, suberic acid, sebacic acid, terephthalic acid or isophthalic acid, or ring-opening polymerization of lactone. The obtained polylactone diol, for example, polycaprolactone glycol, polypropiolactone glycol, polyvalerolactone diol and the like can be mentioned.

Further, (A) and (B) and a chain extender (C)
A polyester-based polyurethane composed of is also preferably used. Examples of chain extenders include diol and diamine. Specifically, ethylene glycol, 1,4-butanediol, propylene glycol, 1,6-hexanediol, 3-methyl-1,5-pentanediol,
1,4-bis (β-hydroxyethoxy) benzene,
Diols such as 1,4-cyclohexanediol, bis (β-hydroxyethyl) terephthalanol, and xylene glycol, N- (2-hydroxyethyl) ethylenediamine, N- (2-hydroxyethyl) propylene. Diamine, N- (2-hydroxypropyl) ethylenediamine, N- (2-hydroxypropyl) propylenediamine, N- (2-hydroxypropyl) butylenediamine, N, N'-bis (2-hydroxyethyl) ethylenediamine, N, N'-bis (2-hydroxyethyl) propylenediamine, N, N'-bis (2-hydroxypropyl) ethylenediamine, N, N'-bis (2-hydroxypropyl) propylenediamine, N, N'-bis (2 -Hydroxypropyl) hexamethylenediamine,
N-methyl-N '-(2-hydroxyethyl) ethylenediamine, N-propyl-N'-(2-hydroxypropyl) propylenediamine, N-hexyl-N '-(2
-Hydroxypropyl) hexamedylenediamine and the like.

Resins other than polyester-based polyurethane may be contained within the range not impairing the present invention, such as antifouling agent, water repellent, oil repellent, antioxidant, ultraviolet absorber, light stabilizer, Additives such as pigments may be included.
Further, as a result of earnest research, the present inventors have found that the 100% modulus is 15 kg / cm ² or less, the breaking elongation is 1000% or more, and particularly the 100% modulus is 10 kg / cm ² or less,
It has been found that a polyester-based urethane resin having a breaking elongation of 1500% or more is preferable. By using such a resin, the whitening phenomenon can be suppressed more significantly.

In general, a resin having a low modulus and a high breaking elongation is not preferable as an industrial material, but is suitable for clothing such as woven coating. That is, since it is usually required to have “high strength” in the field of industrial materials, resins having high flexibility but low strength as described above are rarely used for industrial materials. As a matter of course, even in the field of civil engineering and construction such as curing mesh, it is rigid and has high strength (high modulus.
Resins with low elongation at break) are currently used as coating agents. However, in the present invention, a more excellent effect (suppression of whitening phenomenon) is obtained when a polyester resin having a low modulus and a high elongation at break, which has not been used so far for industrial materials, is used.
Can be obtained.

As the polyester fiber used in the present invention, any polyester fiber such as polyethylene terephthalate fiber, polybutylene terephthalate fiber and polyethylene naphthalate fiber (wholly aromatic polyester fiber) can be used. Can be used). Titanium oxide, kaolin, silica, barium sulfate, carbon black, pigments, antioxidants, ultraviolet absorbers, light stabilizers and the like may be contained as appropriate. Further, fibers other than polyester fibers can be used in combination as long as the effects of the present invention are not impaired. Fibers other than polyester fibers are 3
It is preferably 0% by weight or less / total fiber weight, particularly 10% by weight / total fiber weight. The form of the yarn forming the mesh-like fabric may be any of filament, spun yarn and the like, but filament yarn is particularly preferable. Filament yarns have higher tenacity than spun yarns, and since they do not have fiber fluff on the surface, they are preferable in terms of antifouling property. Further, when the filament yarn is used, misalignment is likely to occur, so that the effect of the present invention can be further exerted.

Although the thickness of the thread is not particularly limited, it is preferably about 500 to 2000 dr. If you use a material with a small fineness, you need to increase the density of the fabric when high strength is required (curing mesh, etc.), so the mesh opening area (porosity) becomes too small and breathability, wind Removability becomes insufficient. On the other hand, if the fineness is too large, the fabric weight becomes large and the handleability is impaired, the mesh opening area becomes large, and the awning effect is hindered or dust floating in the air easily adheres to the work cloth, Problems may occur depending on the application. A mesh having an opening area of about 0.1 to 100 mm ² can be preferably used. Mesh fabrics are plain weave, entangled weave,
Although it may be a woven fabric such as a dummy woven fabric or a knitted fabric such as an inserted Russell knitted fabric, it is not particularly limited, but a woven fabric of a simulated woven fabric is preferable from the viewpoint of cost and prevention of misalignment.

Further, in a field of application where flameproofness is required such as a curing mesh, it is preferable to interwoven and knit a flame-retardant polyester fiber, and 30% by weight or more of the fiber constituting the cloth is a flame-retardant polyester fiber. Is preferred. As the flame-retardant polyester fiber, it is preferable to use a fiber made of polyester copolymerized with a phosphorus monomer (phosphenate compound). For example, JP-A-53-562
50, JP-A-63-15823, JP-A-1
Examples include flame-retardant polyester fibers described in JP-A-266219 and JP-A-5-302024. Particularly, a carboxyphosphinic acid monomer as disclosed in JP-A-5-302024, particularly 2,
Fibers made of polyester copolymerized with 5-dioxo-1,2-oxaphospholanes are preferred.

Such flame-retardant copolyester fibers are easily melted when they come into contact with flames, and so-called melt drops do not spread. Content of phosphorus-based monomer (converted to phosphorus atom) is 1,000 to 10,000 ppm
Is preferred. Generally, when a fabric made of flame-retardant copolyester fiber is resin-processed, the flameproof effect of the fiber itself is often impaired, but when the resin of the present invention is used, an excellent flame-retardant effect is obtained. Can be obtained. It is also possible to use a flame-retardant polyester fiber in which a flame retardant is kneaded, but in order to obtain sufficient flame retardancy, the kneading amount must be increased, and the strength of the polyester fiber Therefore, it is often preferable to use a flame retardant polyester fiber of a copolymer type.

Further, when a polyester fiber in which a flame retardant such as a halogen compound or aluminum hydroxide is kneaded is used, the fiber itself does not spread, but the fiber itself is decomposed and carbonized to assist combustion of the resin. The resin used in the present invention may not exhibit the inherent flame retardancy.
Therefore, it is often preferable to use a phosphorus-based flame retardant.

The resin is applied to the mesh fabric in the form of a solution or a dispersion, but in order to coat the surface of the yarn with a smaller amount of adhesion, an aqueous dispersion is used instead of an organic solvent. It is preferable. When an aqueous dispersion is used, the resin tends to cause migration during drying between the fibers between the fibers and in the vicinity of the texture points of the woven fabric, and irregularities on the surface of the yarn can be formed with a relatively small amount of adhesion. It is buried and easily obtains antifouling property and sealing strength. The resin processing method for the mesh-like cloth is not particularly limited, but a roll coater method, a knife coater method, a dipping method, etc. can be applied. In particular, the dipping method is preferable because it has good impregnation property between the single fibers into the resin. The resin-treated cloth of the present invention can be obtained by squeezing and drying after impregnation and further curing if necessary.

The resin-treated cloth of the present invention can be used for various purposes, but since it is lightweight and has excellent light resistance and flame resistance, it can be suitably used especially for civil engineering and construction such as curing mesh. When the resin-processed cloth is used for various purposes, it is necessary to use the ends of two or more mesh sheets in succession or to repair a damaged portion or the like. In the case of a work cloth to which a large amount of resin such as vinyl chloride is adhered as in the conventional case, it is possible to perform processing such as connection and repair by heat-adhering or adhering the adhered resin to a high frequency welder. When only a small amount of resin is used as described above, sheet processing (joining, repairing, etc.) can be efficiently performed by using a hot melt adhesive having a melting point of 180 ° C. or less. In this case, it is possible to effectively use the work cloth, the broken cloth, etc., which have been discarded so far because the length has not reached the specified length, and it is possible to prevent the damage by applying the resin to a portion where the damage is likely to occur. This method can perform the same processing on a sheet to which a resin other than the polyurethane resin is attached, but it is more preferable from the viewpoint of the effect obtained in the present invention.

In the present invention, a hot melt adhesive is more preferably used. When the resin is adhered with a water-based or solvent-based resin, it takes a considerable time to cure the resin, and when it is processed by sewing, not only the fabric is damaged but also the processability becomes insufficient. The melting point of the adhesive is 180 ° C. or less, especially 15 so that the morphological change (shrinkage etc.) of the fiber does not occur.
The temperature is preferably 0 ° C or lower.

In particular, it is preferable to use a resin having a difference in solubility parameter (SP value) between the resin constituting the resin-treated cloth and the hot melt adhesive of 2 or less, particularly 1 or less.
The SP value in the present invention is obtained by the following formula from the structural formula of the compound and its density (Smell).
Law).

[0022]

[Equation 1]

Specifically, ethylene / vinyl acetate type, polyamide type, polyester type, butyral type, cellulose type
Adhesives such as silicone derivative-based, polymethylmethacrylate-based, polyvinyl ether-based, polyurethane-based and polycarbonate-based adhesives can be mentioned. Above all, a urethane-based adhesive can be more preferably used.

The amount of the adhesive may be appropriately set, but it is not preferable to use it in a large amount from the viewpoint of handleability, and it is preferable that the thickness is 1 mm or less and the adhesion amount is 0.2 g / cm ² or less. The thickness is preferably 0.5 mm or less. The peel strength after adhesion is preferably 3 kg / 3 cm or more, and the shear strength is preferably 100 kg / 9 cm ² or more. Adhesion methods include a method in which a hot melt adhesive film is sandwiched between resin-processed cloths and adhered with a lighter, a high frequency welder, etc., and a method in which a hot melt resin is melted and adhered with a hot melt gun (hot melt type applicator), etc. Is mentioned.

Hereinafter, the present invention will be described in more detail with reference to Examples, but the present invention is not limited thereto.

【Example】

[Flameproofness] According to JIS A8952, A-1 method (afterflame time of 3 seconds flame contact test), D method (minimum value of flame contact number test)
Was evaluated. [Sealing force (kg)] As shown in FIG. 2, a strip-shaped sample having a width of 10 fiber bundles forming a mesh structure and a length of 170 mm was prepared. The strength (maximum value) when the fiber bundle guiding yarn starts to shift when cutting 4 pieces each from the outside of the width and 2 pieces of the inside from the inside and pulling to the both sides with a tensile tester, the average of vertical and horizontal Indicated by value. The fiber bundle forming the mesh structure is, for example, in the case of the dummy weave design shown in FIG.
It means a fiber bundle in which three warps and three wefts are combined.

[Chokumar] A4 size mesh sheet is bent at the center and no whitening occurs ○, slightly whitening Δ, whitening occurs. It was evaluated as x. [Weather resistance] A change in feeling after 500 hours was measured with a sunshine weather meter, and those having no change were evaluated as ◯, slightly deteriorated as Δ, and cured as ×. [Elongation at Break (%)] The elongation at break of the film was measured at a tensile rate of 50 mm / min.

[100% modulus (kg / cm ² )]
A resin film having a thickness of 2 mm was prepared and the tensile stress at 100% elongation was measured. [Peeling strength (kg / 3 cm)] According to JIS K-6301, the peel strength was measured under the conditions of a width of 3 cm and a pulling speed of 50 mm / min. [Shear strength (kg / 9 cm ² )] JIS L-1096
According to NI, it was measured under the conditions of 3 cm × 3 cm (bonding area 9 cm ² ) and a pulling speed of 200 mm / min.

[Example 1, Comparative Examples 1 to 4] 1500 dr
/ 144f flame-retardant polyester fiber (Nannex
Kuraray Co., Ltd.) was used to manufacture the mesh-like fabric shown in Fig. 1 (300 g / m ² mesh opening 0.7 mm ^{2 for} mock weave), and the water emulsion of various resins was diluted with water to obtain a deposition rate of 10%. The dipping process was performed so that Then, it was dried at 160 ° C. for 2 minutes and then cured at 180 ° C. for 1 minute. Table 1 shows the performance evaluation of the resulting mesh resin processed cloth. As a polyester-based urethane resin, breaking elongation 2250%, 100% modulus 8 kg
/ Cm ² (manufactured by Hydran AP-70 manufactured by Dainippon Ink Co., Ltd.). In Comparative Examples 1 to 4, instead of the polyester-based urethane resin, Comparative Example 1 (G-576) was used.
Zeon Corporation, Comparative Example 2 (Boncoat AN-258)
Dainippon Ink and Comparative Example 3 (UBE Nylon 602)
1 Ube Industries, Comparative Example 4 (Plascoat Z-85)
0) was used.

[0029]

[Table 1]

[Examples 2 to 7 and Comparative Examples 5 to 8] Resin-treated cloths were obtained in the same manner as in Example 1 except that each urethane resin was diluted with water and subjected to a dipying treatment so that the adhesion rate was 10%. . Table 2 shows the performance evaluation of the obtained mesh resin processed cloth. In addition, as the urethane resin, Example 2 was used.
(Hydran HW-930 Dainippon Ink), Example 3 (Hydran HW-910 Dainippon Ink), Example 4 (Bondic 1205 Dainippon Ink), Example 5 (Hydran AP-70 Dainippon Ink) ), Example 6 (made by Bondic 2220 Dainippon Ink), and Example 7 (Hydran HW-3).
01 Dainippon Ink and Comparative Example 5 (Permarin UA-300)
Sanyo Kasei), Comparative Example 6 (Permarin UA-310 Sanyo Kasei), Comparative Example 7 (Permarin UC-20 Sanyo Kasei), Comparative Example 8 (Permarin UA-190 Sanyo Kasei). Using.

[0031]

[Table 2]

[Examples 8 to 10 and Comparative Examples 9 to 10] A resin-processed cloth was produced in the same manner as in Example 1 except that the polyester type urethane resin used in Example 5 was attached in an amount of 1 to 80% by weight. The performance is shown in Table 3.

[0033]

[Table 3]

In the comparative examples 2 and 3, the chalk is generated, and the polyvinyl chloride resin (comparative example 1), which is generally used at present, is also used when the amount of adhesion is reduced to reduce the weight. Has a chalk bear. Since these have exposed fibers, they have problems in terms of antifouling property and weather resistance, and it is difficult to use them outdoors for a long period of time. On the other hand, the one with polyester polyurethane attached is
There is almost no squeak, and long-term use is possible,
In particular, those using a urethane resin having a high breaking elongation and a low modulus (Examples 4, 5 and the like) are extremely excellent in that no chalk marks are generated even when the amount of adhesion is extremely small. Have been obtained.

[Embodiment 11] 1500 denier / 144
A polyester-based urethane resin (Hydran AP-70 manufactured by Dainippon Ink) is applied to the mesh-like fabric (300 g / m ^{2 with a} plain weave fabric) shown in Fig. 1 made of filament flame-retardant polyester fiber (manufactured by Kuraray Co., Ltd.). A solution having a concentration such that the adhesion rate was 10% was prepared, was subjected to a dipping treatment, was dried at 160 ° C. for 2 minutes, and was cured at 180 ° C. for 1 minute. A urethane-based hot melt film (Thermolite 6501
Two sheets of 50 μm (manufactured by Daicel Chemical Co., Ltd.) were stacked and adhered by a high frequency welder. The obtained processed cloth (330 g /
m ² ), peel strength is 3.8 kg / 3 cm, shear strength is 1
It had excellent adhesiveness at 10 kg / 9 cm ² .

[Example 12] A urethane hot melt resin was applied to the obtained work cloth by a melter gun (at 180 ° C,
The same procedure as in Example 9 was carried out except that the adhesive portion was applied so that the width was 3 cm, the length was 3 cm, and the thickness was about 100 μm, and the mixture was pressed for 2 seconds with 2 kg. Peel strength is 4.2 kg
/ 3 cm, the shear strength was 125 kg / 9 cm ² , and showed excellent adhesiveness.

[0037]

According to the present invention, it is possible to obtain a resin-processed cloth which is light in weight, excellent in antifouling property and weather resistance, and in which whitening phenomenon hardly occurs. The resin-processed cloth of the present invention can be used in various fields, but it is particularly suitable as a curing mesh, can be repainted even during use, and can be easily repaired for damage, spliced and the like and is excellent in maintenance.

[Brief description of drawings]

FIG. 1 is a schematic view showing an example of the organization chart of a mesh fabric (Missaori) used in the present invention.

FIG. 2 is a schematic diagram showing a sample for evaluating the sealing force of a resin-processed cloth in an example.

[Explanation of symbols]

 1, 1 ': Cut portion of fiber bundle (4 pieces) 2: Cut portion of fiber bundle (3 pieces)

Claims (2)

[Claims] 1. A resin-processed cloth comprising a polyester-based polyurethane resin adhered in an amount of 2 to 60% by weight to a mesh cloth made of polyester fibers. 2. A processing method of adhering a hot-melt adhesive having a melting point of 180 ° C. or lower to a resin-processed cloth obtained by adhering a polyester-based polyurethane resin in an amount of 2 to 60% by weight on a mesh cloth made of polyester fibers.