JP2013155459A - Curtain - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a curtain that has both of stable fire retardancy and water repellency, and also is friendly to environment.SOLUTION: The curtain having superior fire retardancy and water repellency is produced by imparting a wax-based water-repellent to a fabric formed by using 50 wt.% or more of a polyester fiber containing a non halogen flame retardant. In addition, a solid content in the wax-based water-repellent in an amount of 0.2 wt.% or more but 1.2 wt.% or less is deposited with respect to the weight of the fabric.

Description

  The present invention relates to a polyester curtain that is excellent in both flame retardancy and water repellency while using a production method and materials in consideration of the global environment and safety.

  Conventionally, for interior products such as curtains and carpets used in public facilities such as hotels, hospitals, and movie theaters, it has been obliged to provide flame retardancy as defined by the Fire Service Law. In addition, in such applications, it is not satisfied only by excellent flame retardancy, and a product having water repellency, antifouling properties, antibacterial properties and the like is strongly desired. For example, it is used in a hotel bathroom. The demand for water repellency is particularly strong in shower curtains.

  Many fiber products that have both flame retardancy and water repellency have been put into practical use, but most water repellents have the property of significantly reducing flame retardancy. It is necessary to use a strong halogen-based flame retardant represented by bromocyclododecane (hereinafter referred to as HBCD), and a fluorine-based repellent that can impart a strong and stable water repellency at a relatively low cost without impairing the texture. Flame retardant and water repellent products processed with liquid medicine dominate the market.

  However, in recent years, as the awareness of the global environment has increased worldwide, in addition to the demand for functionality, it has also been required to satisfy the safety of the global environment and organisms.

  It is known that the halogen-based flame retardant contains a harmful substance that is hardly decomposable in the combustion gas, and in recent years there has been a movement to regulate its use. Instead of halogen-based flame retardants, the addition of flame-retardant properties with higher safety phosphorus-based compounds is becoming mainstream, but phosphor-based flame retardants have the disadvantage that their flame retardant performance is significantly inferior compared to halogen-based flame retardants. Have. Accordingly, it is necessary to inevitably set the amount of the fluorine-based water repellent having the property of inhibiting the flame retardancy, and as a result, there is a problem that sufficient water repellency cannot be imparted. In addition, the fluorine-based water repellent is not only a problem that inhibits flame retardancy, but also has strong toxicity and perfluorooctanoic acid (hereinafter referred to as PFOA) and perfluorooctanesulfonic acid (hereinafter referred to as “PFOA”), which have been pointed out to affect living organisms. PFOS). In addition, because of the environmental burden of containing harmful fluorine compounds in the combustion gas when incinerated, water repellent products that do not use fluorine-based water repellents have been rapidly desired in recent years. Yes.

  Means for imparting flame retardancy to the fabric can be broadly classified into a method using a fiber having flame retardancy and a method of post-processing a flame retardant after forming a fabric. However, in the method of attaching the flame retardant component in the post-processing, there is a problem in that the flame retardant performance varies due to the uneven adhesion of the flame retardant component, and harmful HBCD and persistent decomposition when the used processing liquid is disposed. There is a risk that phosphorus-based compounds exhibiting a large amount will be discharged into the environment.

  Patent Document 1 introduces a technology that achieves both flame retardancy and water repellency by processing a specified amount of fluorine-based water repellent on a fabric using phosphorus-based flame retardant yarn. It cannot be said that sufficient flame retardancy has been imparted due to the inhibition of flame retardancy. In addition, PFOA and PFOS contained in the fluorine-based water repellent, and harmful fluorine compounds generated at the time of incineration are accompanied by an environmental load that is discharged into the environment.

  Patent Document 2 introduces a technology that uses a fluorine-based water repellent that has taken measures such as PFOA and PFOS in consideration of the environment, but contains trace amounts of harmful substances such as PFOA and PFOS. It is not a drastic measure, and no measures are taken against harmful fluorine compounds generated during incineration.

Japanese Patent No. 2944835 JP 2007-247092 A

  The subject of this invention provides the curtain which satisfy | fills the stable flame retardance and water repellency simultaneously by using the wax-type water repellent with a small environmental load with respect to the present condition. Furthermore, by using non-halogen flame retardant polyester yarn without using a flame retardant, there is no concern about harmful and hardly decomposable flame retardant components being emitted, and an environmentally friendly curtain is provided. is there.

  In order to solve the above problems, the present invention has the following configuration. That is, in the curtain excellent in flame retardancy and water repellency of the present invention, the wax-based water repellent is attached to a fabric constituted by using 50% by weight or more of a polyester fiber containing a non-halogen flame retardant. The solid content of the wax-based water repellent is adhered in the range of 0.2 wt% to 1.2 wt% with respect to the weight of the dough.

  According to the present invention, it is possible to provide a curtain excellent in both flame retardancy and water repellency in consideration of the global environment and living organisms not only in products but also in the production process.

  Hereinafter, the present invention will be described in detail. As the flame retardant component contained in the polyester flame retardant yarn used in the curtain having excellent flame retardant and water repellency according to the present invention, it is important not to use a halogen-based processed material that generates harmful gases during combustion. It is necessary to use a flame retardant. Examples of the non-halogen flame retardant include phosphorus-based, nitrogen-based, metal salt-based, silicon-based, and inorganic-based flame retardants, and may be appropriately selected in consideration of compatibility with the yarn forming property. The form of the flame retardant compound mixed into the polyester is not particularly limited, and may be mixed by a method of simply adding it to the polyester polymer or a method of copolymerizing with the polyester at the molecular level. For example, when a phosphorus-based flame retardant is used, the addition amount is preferably 0.05 to 5.0% by weight in terms of phosphorus atomic weight, based on the weight of the polyester component, preferably 0.1 to 3.0% by weight. % Addition is more preferable. If the added amount of phosphorus yarn is less than 0.05% by weight, stable flame retardancy cannot be obtained, and if it exceeds 5.0%, the mechanical performance of the fiber tends to be impaired.

  Examples of the polyester fiber include a polyester fiber containing an aromatic component and a polyester containing an aliphatic component. Aromatic polyesters include polyethylene terephthalate, polybutylene terephthalate, and polytrimethylene terephthalate. These are copolymerized with a third component such as isophthalic acid or isophthalic acid sulfonate to make it highly shrinkable or dyeable with a cationic dye. Things can be used. Examples of fatty acid polyester fibers include polylactic acid fibers. Two types of different polymers may be in the form of a core-sheath composite yarn that constitutes a core component and a sheath component. In this case, the flame retardant component is included in either polymer, but is not included in both polymers. May be.

  In addition, a matting agent, an ultraviolet absorber, and an antistatic agent are added to the polyester fiber used in the present invention for the purpose of stabilizing the productivity in the yarn production process and the subsequent processing process or imparting functionality. In addition, additives such as coloring pigments may be included.

  As the fiber form, it is generally used in multifilaments and spun yarns, but it is necessary to make the surface state of the fabric as smooth and homogeneous as possible in order to give stable flame retardancy, It is preferred to use multifilaments. Moreover, it is also preferable to use false twisted yarn to give a moderate swell and give a high-class feeling to the extent that the smoothness of the fabric surface is not largely lost.

  In both multifilaments and spun yarns, there are no restrictions on the fiber thickness (fineness, yarn count), the number of single yarns to be formed, and the cross-sectional shape of the single yarn, and they are appropriately determined in order to achieve a desired texture. It ’s fine.

  Examples of the curtain excellent in flame retardancy and water repellency of the present invention include woven fabrics and knitted fabrics including lace knitting, but in order to exhibit stable flame retardancy, it is preferable that the blending ratio of the flame retardant yarn is as large as possible, It is necessary to contain at least 50% by weight, and it is preferable to contain 80% by weight or more.

  When the non-flame retardant yarn is used in combination, synthetic fibers such as non-flame retardant polyester, nylon, rayon, and acrylic can be used to the extent that flame retardancy is not impaired, and natural fibers such as cotton, wool, hemp, and silk can be used.

  It is important not to use a fluorine-based water repellent containing an environmental load causative agent in the flame retardant and water repellency curtain of the present invention. Examples of water repellents other than fluorine-based agents include wax-based water repellents (such as paraffin-based water repellents), silicon-based water repellents, and alkylethylene urea-based water repellents. All water repellents have the property of inhibiting flame retardance like fluorine-based water repellents, but it is necessary to use wax-based water repellents in order to maintain flame retardancy with non-halogen flame retardant yarns. is there.

  Conventionally, wax-based water repellents have been used not for the purpose of imparting water repellency but rather for the purpose of hard finishing of fabrics, so chair tension, car seats, etc. that require appropriate tension and form retention It has been mainly used for applications. Therefore, the wax-based water repellent was never used because of the background of the use of the fluorine-based water repellent in curtain applications that require a flexible and supple drape feeling. In the present invention, it is possible to satisfy all of water repellency, flame retardancy, and texture by providing an appropriate range for the amount of adhesion in the wax-based water repellent. That is, in order not to impair the flexibility of the fabric while maintaining stable flame retardancy, it is necessary to set the amount of solid content in the wax-based water repellent to be significantly lower than usual. It is necessary to set the weight% or less. By making it 1.2% by weight or less, there is no problem of occurrence of chalk marks when scratching with a nail. Conversely, if the amount of solid content in the water repellent is small, there will be problems such as insufficient water repellency being obtained or water repellency unevenness depending on the location of the fabric due to uneven water repellent adhesion. Therefore, it is necessary to set the adhesion amount of the solid component in the wax-based water repellent to 0.2% by weight or more.

  The types of wax-based water repellents can be roughly classified into aliphatic hydrocarbon-based water repellents and zirconium-based water repellents. Examples of the aliphatic hydrocarbon wax include liquid paraffin, ceresin, petrolatum, petroleum, synthetic paraffin, polyethylene and polypropylene, and synthetic paraffin is preferred from the viewpoint of washing durability. The zirconium-based water repellent means at least one of those obtained by reacting the wax-based compound with a zirconium-based compound, specifically, basic zirconium by zirconium acetate, zirconium hydrochloride, zirconium nitrate, potassium hydroxide, or the like.

  Wax-based water repellents can be treated in a bath-exhaust treatment method in a state of being immersed in a high-temperature processing fluid, a pad dry cure method, a pad dry method, a pad dry steam method, Although the treatment liquid can be processed into fibers by a gravure coating method, a spray method, or the like, a pad dry cure method is preferably used. In the case of the pad dry cure method, the water repellent treatment solution is adhered to the fabric, dried at 60 ° C. to 120 ° C., and then heat treated at 120 ° C. to 180 ° C. for 10 seconds to 60 seconds. From the viewpoint of durability and durability.

  For the purpose of improving water-repellent washing durability due to the coating effect, urethane resins and polyester resins may be treated at the same time as wax water repellents, but it is difficult to increase the adhesion amount of urethane resins and polyester resins. Since the flammability is impaired, the resin adhesion amount is preferably 3.0% by weight or less with respect to the weight of the dough, and 0.5% by weight or more is adhered to maintain stable durability. Is preferred. Similarly, for the purpose of improving water-repellent washing durability, a wax-based water repellent may be attached to the fabric through a binder.

  The curtain excellent in flame retardancy and water repellency according to the present invention is used for indoor curtains and roll screens used in etiology and accommodation facilities from general households, and shower curtains used in bathrooms, and is particularly suitable for shower curtains.

Hereinafter, the present invention will be described in detail with reference to examples. In addition, the measuring method of each physical-property value in an Example is as follows.
A. Flame Retardancy Evaluation was made based on the afterflame time (5 locations) of the JIS L 1091 A-1 method (micro burner method) and the number of flame contacts (3 locations) of the JIS L 1091 D method (coil method). The after flame time is less than 3.0 seconds, and the number of flame contact is 3 times or more.
B. Water repellency Evaluation was carried out by a spray method in accordance with JIS L1092, “Method for testing waterproofness of textile products” Grade 3 or higher is accepted.
C. Water Repellency Durability Water washing was repeated 5 times according to JIS L 1042, and then water repellency was evaluated.
D. Wax-based water repellent solid content adhesion rate When the water repellent use concentration (% owf) is D, the solid content adhesion rate (%) is A, and the mangle squeezing rate is P, the solid content adhesion rate S (weight) %) Is expressed by the following equation.

S = D × (A / 100) × (P / 100)
Example 1
A non-halogen flame retardant polyester long fiber “Annfra” manufactured by Toray Industries, Inc. was false twisted in a conventional manner to obtain a 167 decitex, 48 filament multifilament false twist yarn. This machined yarn was used as a single warp, and two wefts were used as double yarns to create a plain machine with a warp density of 99 / 2.54 cm and a weft density of 42 / 2.54 cm. This raw machine was scoured and dried at 90 ° C. by a conventional method, and then a fabric (warp density 103 / 2.54 cm, weft density 45 / 2.54 cm) heat-set at 180 ° C. was prepared.

Subsequently, a processing liquid containing 3% ows of an aliphatic hydrocarbon wax-based water repellent “Lepol No. 50” (paraffin solid content: 38%) manufactured by Daikyo Chemical Co., Ltd. was spread on the pad bath, After impregnating with the processing liquid, the film was squeezed with a mangle so that the squeezing ratio became 70%, continuously dried at 130 ° C. for 3 minutes, and heat set at 160 ° C. for 1 minute. As shown in Table 1, the physical properties of the obtained fabric passed both flame retardancy and water repellency, and the fabric texture was soft.
Example 2
In Example 1, a urethane resin (UR-4 manufactured by Daikyo Chemical Co., Ltd.) was added to a processing liquid for applying a wax-based water repellent so that the concentration became 1.5% ows. The pad dry cure process was carried out under the same process conditions. As shown in Table 1, the physical properties of the obtained fabric resulted in improved water repellency compared to Example 1.
Comparative Example 1
The same woven fabric as in Example 1 was prepared except that the warp of the woven fabric was changed to a normal polyester false twisted yarn (167 decitex, 48-filament multifilament twin yarn) having no flame retardancy. A wax-based water repellent was processed under the same conditions. In the obtained fabric, the water repellency passed, but the flame retardancy failed.
Comparative Example 2
In Example 1, the use concentration of the wax-based water repellent was changed to 5% owf, and pad dry curing was performed under the same process conditions as in Example 1. In the obtained dough, as shown in Table 1, in addition to the failure of flame retardancy, the texture became stiff and the occurrence of chalk marks was confirmed.
Comparative Example 3
In Example 1, the use concentration of the wax-based water repellent was changed to 0.5% owf, and pad dry curing was performed under the same process conditions as in Example 1. In the obtained cloth, as shown in Table 1, the water repellency after 5 washing treatments was rejected.
Comparative Example 4
In Example 1, instead of the wax-based water repellent, a fluorine-based water repellent (“AGE-082” manufactured by Meisei Chemical Industry Co., Ltd.) was prepared in a pad bath at a concentration of 1.0% owf. After impregnating the fabric used in Example 1 with this working fluid, the fabric was squeezed with mangle to a squeeze rate of 60%, then dried at 130 ° C. for 3 minutes, and finally heat set at 170 ° C. for 1 minute. Carried out. In the obtained dough, as shown in Table 1, the water repellency was good, but the flame retardancy was rejected.
Example 3
In Example 1, the water repellent was changed to a zirconium-based wax-based water repellent water repellent “Neolux SALK” (paraffin solid content: 10%) manufactured by Takamatsu Oil Co., Ltd., which contains 8% ows. After spreading the processing liquid on the pad bath and impregnating the dough with the processing liquid, it is squeezed with mangle so that the squeezing ratio becomes 70%, continuously dried at 130 ° C for 3 minutes, and heated at 170 ° C for 1 minute The set was carried out. As shown in Table 1, the physical properties of the obtained fabric passed both flame retardancy and water repellency.
Comparative Example 5
In Example 3, the use concentration of the wax-based water repellent was changed to 20% owf, and pad dry curing was performed under the same process conditions as in Example 3. In the obtained dough, as shown in Table 1, the flame retardancy was rejected, the texture was hard, and chalk marks were also generated.
Comparative Example 6
In Example 3, the use concentration of the wax-based water repellent was changed to 2% owf, and pad dry curing was performed under the same process conditions as in Example 3. As shown in Table 1, the physical properties of the obtained fabric were poor in water repellency.

  In the present invention, since a fluorine-based water repellent or flame retardant containing a harmful component is not used, it is possible to provide a curtain in consideration of the environment and the human body while having stable flame retardancy and water repellency.

Claims (3)

A wax-based water repellent is attached to a fabric constituted by using 50% by weight or more of a polyester fiber containing a non-halogen flame retardant, and the solid content of the wax-based water repellent is added to the fabric weight. The curtain characterized by being 0.2 wt% or more and 1.2 wt% or less. The curtain according to claim 1, wherein the polyester resin or the urethane resin is contained in an amount of 0.5% by weight to 3.0% by weight with respect to the weight of the fabric. The curtain according to claim 1 or 2, wherein the polyester fiber is false twisted yarn.