JP3143215B2 - Interior materials for high-speed trains and their manufacturing method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fabric interior material used for a wall surface or a ceiling surface of a high-speed train such as a passenger train, and a method of manufacturing the same.

[0002]

2. Description of the Related Art A decorative veneer made of plastic has been widely used as a wall covering in passenger trains from the past. However, in recent years, a knitted fabric giving a warm and luxurious atmosphere has been used because it gives a cool and cheap impression. Things have appeared.

[0003] However, the passenger train cars are long and have a large internal space, so that the air inside the car moves greatly every time the vehicle starts and stops, when entering and exiting a tunnel, and when trains pass each other. Because the movement of the air due to the airflow of the boarding / cooling / heating / ventilation and the like is also intense, when the above-mentioned knitted fabric wall covering is used, the so-called respiratory action in which air flows between the fibers of the fabric is remarkable, and the knitted fabric acts as a filter. Therefore, there is a problem that dust or the like in the air accumulates in the gaps between the knitted fabrics and causes spot-like stains in a short time. In addition, in the case of knitted fabric wall coverings, foods and seasonings, food mud of shoes,
When shoe ink or the like adheres, there is also a problem that even if wiped off, stains permeate into the structure of the knitted fabric and are difficult to remove.

Therefore, conventionally, a knitted fabric made of acrylic or polyclar yarn is used in order to secure flame retardancy generally required for train interiors, and to stabilize the shape and prevent ventilation. In addition to the backing made of a synthetic resin material, the back surface of which is subjected to a water- and oil-repellent treatment with a fluorine-based treating agent to impart antifouling properties.

[0005]

However, the wall covering made of the above-mentioned conventional knitted fabric has a gas permeability of about 1.3 to 1.5 cc / cm ² · sec even if it is backed. However, since the dirt due to the respiratory action cannot be prevented, and the processing temperature of the water- and oil-repellent processing is low due to the heat resistance of the knitted fabric, the function of the processing agent is not sufficiently exhibited, and The properties were insufficient.

In view of the above-mentioned circumstances, the present invention provides, as an interior material for a high-speed train using a knitted fabric, a very low level of air-permeable dirt, very good antifouling properties against various dirt substances, and good flame retardancy. It is intended to provide a device having:

[0007]

According to a first aspect of the present invention, there is provided an interior material for a high-speed train according to the present invention, in which a flame-retardant polyester yarn is used as a material for water- and oil-repellent knitting. It employs a configuration in which a polyurethane film is adhered to the back surface of the woven fabric.

[0008] For the same purpose, a high speed train interior material according to claim 2 of the present invention has a backing of polyurethane or polyester on the back surface of the knitted fabric of claim 1, and a polyurethane film on the backing. This adopts a configuration of being stuck.

Further, according to a third aspect of the present invention, there is provided a method for manufacturing an interior material for a high-speed train, wherein a knitted fabric made of flame-retardant polyester yarn is subjected to a water / oil repellent treatment, and the knitted fabric is continuously driven. On the other hand, a polyurethane resin liquid is applied to the surface of a continuously running release sheet, dried to form a polyurethane film layer, and a polyurethane resin liquid is further applied on the film. A structure is adopted in which a knitted fabric having a polyurethane film adhered to the back surface is obtained by continuously laminating and laminating the film layer and peeling the film layer from the release sheet.

[0010]

DETAILED DESCRIPTION OF THE INVENTION The knitted fabric used for the interior material of the present invention is made of flame-retardant polyester yarns, so that it has good flame retardancy and the polyester fiber has high heat resistance. In addition, the processing temperature of the water- and oil-repellent processing can be set high, so that the function of the processing agent can be sufficiently exerted and excellent antifouling properties can be obtained. However, in the interior material of the present invention, since the polyurethane film is adhered to the back surface of the above-described knitted fabric, there is almost no air permeability between the front and back surfaces, and even when used for a wall surface or a ceiling in a train, the knitted fabric can be used. It is characterized by the fact that dirt due to respiratory action is extremely unlikely to occur, and since the above film is made of polyurethane, the flame retardancy of the interior material as a whole is also good. For example, there is a problem of generating toxic gas such as polyvinyl chloride and generating smoke. Nor.

As the above-mentioned flame-retardant polyester yarn, any of polyester fibers having flame retardancy by themselves and fibers having flame retardancy imparted by post-treatment can be used.
As an example of the former, there is one in which phosphorus or the like is contained inside or on the surface of the fiber, and the generation of combustible gas is suppressed by a rapid dehydrating action at the time of flame contact. Further, as an example of the latter, those obtained by adding an organic flame retardant such as a phosphoric acid ester, a halogen-containing phosphoric acid ester, or a halogen-containing organic compound to a bath at the time of dyeing and imparting flame retardancy simultaneously with dyeing are preferable. is there. It should be noted that a water-soluble salt-type flame retardant such as ammonium phosphate which is usually used after the treatment is not preferred because it reduces the action of the treatment agent by the subsequent water / oil repellency processing.

[0012] As knitted fabric is not limited to the knitting weave configuration, preferably has a weight 80 - 400 g / cm ^2, is recommended that the range of 300-350 g / cm ² from the particular surface of the design of You.

In the water / oil repellent treatment, a treatment agent for lowering the surface tension is fixed to the fiber surface, thereby imparting water / oil repellency to the fiber surface, thereby preventing stains from seeping into the structure of the knitted fabric. It is to prevent. Although the treatment means is not particularly limited, a method is generally employed in which the treatment agent is applied to the knitted fabric by dipping in a treatment agent solution or spraying the solution, followed by heating and drying and curing. At this time, the adhesion strength of the treatment agent increases as the heating temperature increases, and the durability of the water-repellent / oil-repellent action increases accordingly. Since it is used, the heating temperature can be set as high as 140 to 160 ° C. The heating time is about 1 to 2 minutes.

Examples of the treating agent used for the water- and oil-repellent finishing include fluorine-containing resins such as fluorine-modified acrylic resin and fluorine-modified urethane resin, and among them, a thermal reaction type is particularly preferable. Thus, the concentration of the treating agent solution used for the above-mentioned immersion or spraying is 20% of the resin content.
%, Preferably in the range of 1 to 10%, more preferably in the range of 2 to 5%, and the squeezing ratio is about 100%. If it is too low, the water / oil repellency is not sufficiently exhibited, and on the contrary, it is too high. Will lead to a decrease in flame retardancy. In addition, the amount of adhesion is 0.2
２2%, particularly preferably 0.4-1.0%.

In the present invention, a polyurethane film is adhered to the back surface of the knitted fabric subjected to the water / oil repellent treatment.
If necessary, a backing may be applied to the knitted fabric before sticking in advance in order to prevent the knitted fabric from being inclined and curved and to improve the shape stability of the entire interior material. As the resin used for the backing, a polyurethane resin, a polyester resin, an acrylic resin, or the like is suitable. However, a polyurethane resin having a high molecular weight (average molecular weight of 400,000 or more) which does not easily undergo thermal decomposition and hydrolysis is recommended. The backing is dry and has a basis weight of 30 to 70 g / m ^2.
If the thickness is too small, a sufficient effect cannot be obtained. On the other hand, if the thickness is too large, the feeling becomes too hard.

The polyurethane film to be attached to the back of the knitted fabric preferably has a thickness of about 15 to 30 μm.
If it is too thin, the reliability of blocking airflow is insufficient due to pinholes and the like. Conversely, if it is too thick, the hand becomes hard and the cost increases. Also, as the polyurethane of this film, polyester type polyurethane,
Various types such as polyether type polyurethane, polyester-polyether type polyurethane, and polycarbonate type polyurethane can be used.

As a method for attaching the polyurethane film, a film prepared in advance may be laminated on the back surface of the knitted fabric by fusing or the like, but the polyurethane resin liquid is applied onto a release sheet such as release paper. To form a polyurethane film layer, and laminating this on the back surface of the knitted fabric to release the release sheet. As the urethane resin liquid, a two-pack polyurethane paint of a urethane prepolymer solution containing an unreacted isocyanate group and a polyol solution, and a one-pack polyurethane paint in which the unreacted isocyanate group is temporarily blocked with a blocking agent,
A solution in which polyurethane is dissolved in an appropriate solvent or the like can be used. In the sticking method using a release sheet, a polyurethane resin liquid is applied to the surface of the release sheet and dried to form a polyurethane film layer having a thickness of about 10 to 20 μm in order to avoid generation of pinholes. Then, it is recommended to employ a two-stage coating means in which a polyurethane resin liquid is applied on the film, and the applied surface is laminated on the back surface of the knitted fabric.

Thus, in order to continuously produce the interior material of the present invention, the above-described water- and oil-repellent knitted fabric is continuously run, while the polyurethane resin liquid is applied to the surface of the continuously running release sheet. A polyurethane film layer may be formed by coating, and the polyurethane film layer may be continuously bonded to the back surface of the knitted fabric and laminated, and the film layer may be peeled from the release sheet. At this time, when backing the knitted fabric in advance, the backing resin material is continuously applied to the back surface of the continuously running knitted fabric by a roll coater, a knife coater, or the like, and the laminating is performed at a position where the curing is advanced. May be set so as to be performed.

[0019]

EXAMPLES Hereinafter, the present invention will be specifically described in comparison with examples of the present invention, and test results of various performances will be shown.

Example 1 A warp yarn and a weft yarn of 12 / 3.03 cm in both length and width using a flame-retardant polyester yarn of 6/2 (cotton No. 6 twin yarn) (trade name "Hyme" manufactured by Toyobo Co., Ltd.). 320 g / m ^{2 in} plain weave
Is immersed in a heat-reactive fluorine-modified acrylic resin solution having a concentration of 3.0% (trade name "Dickguard F-90" manufactured by Dainippon Ink and Chemicals, Inc., active ingredient 20% solution). After that, squeezing at 100% squeezing rate, 150
C. for 2 minutes to give a water / oil repellent treatment. At this time, the adhesion amount of the resin component was 0.6%. Then, while running the woven fabric, 1 polyurethane resin (trade name “Hydran HW-930”, manufactured by Dainippon Ink and Chemicals, Inc., average molecular weight: 400,000) was applied to the back of the fabric by a roll coater.
After continuous coating at 50 ° C., it is dried and has a basis weight of 60 g / m ^2.
Backing. On the other hand, a polycarbonate-type polyurethane resin liquid (trade name “Chrisbon NY331” manufactured by Dainippon Ink and Chemicals, Inc., a 30% concentration solution) was coated on a running release paper by a roll coater, and then heated at 130 ° C.
To form a polyurethane film layer having a thickness of about 10 μm continuously. Further, on this film surface, a polyester / polyether-type polyurethane resin liquid (trade name “Chrisbon TA465” manufactured by Dainippon Ink and Chemicals, Inc .; 65% solution), and continuously apply and laminate the coated surface to the backing back surface of the fabric while the film is sticky, and peel from the release paper at 130 ° C. By drying for 1 minute, an interior material for a high-speed train having a 25 μm-thick polyurethane film layer on the back surface of the fabric was produced.

Example 2 A 3% -concentration fluorine-modified urethane resin solution (trade name "Dickguard CP-2" manufactured by Dainippon Ink and Chemicals, Inc., resin component 20%) was used as a treatment agent for water / oil repellency processing. Other than the above, an interior material for a high-speed train was produced in the same manner as in Example 1.

Example 3 As a resin for the backing, a polyester resin (trade name "Paterracol AE-10" manufactured by Dainippon Ink and Chemicals, Inc.)
0 ”), except that an interior material for a high-speed train was produced in the same manner as in Example 1.

COMPARATIVE EXAMPLE 1 A woven fabric having the same woven construction as in the example using 6/2 polyacrylic yarn (trade name "Kanecaron" manufactured by Kaneka Chemical Industry Co., Ltd.) was used. After being immersed in a solution (same as in Example 2), squeezed at a squeezing rate of 100%,
After drying at 20 ° C. for 2 minutes, a water / oil repellent treatment was performed. Then, an interior material for a high-speed train was produced in the same manner as in Example 1 using the processed fabric.

Comparative Example 2 An interior material for a high-speed train was produced in the same manner as in Comparative Example 1, except that 6/2 polychloral yarn (trade name “Corderan” manufactured by Kojin Co., Ltd.) was used as a fabric material.

Comparative Example 3 The procedure of Comparative Example 1 was repeated except that a 30 μm-thick fluororesin film was laminated on the surface of the woven fabric using the polyacrylic yarn of Comparative Example 1, and the water / oil repellent treatment was omitted. Interior materials for high-speed trains were manufactured.

Comparative Example 4 An interior material for a high-speed train was produced in the same manner as in Example 1 except that the polyurethane film was not adhered to the back surface of the woven fabric.

Comparative Example 5 The woven fabric subjected to the water / oil repellent treatment of Example 1 was used as an interior material for a high-speed train without performing backing and attaching a polyurethane film.

With respect to each of the interior materials of Examples 1 and 2 and Comparative Examples 1 to 3, typical dirt substances, which often adhere to the wall surface of the train, are adhered to the surfaces of the interior materials. Dirt was wiped with the squeezed cloth, and the degree of dirt on the wiped surface was observed. The results were evaluated as anti-fouling properties, and were evaluated on a scale of 1 to 5 where no dirt was left, and grade 1 when remarkably soiled. Also, in order to determine the durability of the antifouling action, the surface of each interior material was subjected to FASO M-
403-83, after abrasion treatment at 2.5 kgf × 100 times using a plane wear tester according to 6.11.2B method,
In the same manner as described above, the stain component was adhered, and after standing for 24 hours, the cloth was wiped with a cloth squeezed with water, the degree of stain was observed, and the antifouling property was evaluated. The results are shown in Table 1 below. In the interior material of Comparative Example 3, the antifouling property after abrasion was not measured because the fluororesin film was broken by the abrasion treatment.

[0029]

[Table 1] From the results in Table 1, the interior material of the present invention (Examples 1 and 2) has excellent antifouling performance against various types of dirt substances.
Moreover, it is understood that the durability of the antifouling performance is good. On the other hand, in the case of using an acrylic or polyclar yarn as the woven material (Comparative Examples 1 and 2), the treatment temperature of the water / oil repellent processing cannot be increased, so that the durability of the antifouling performance is inferior. In the case where the water- and oil-repellent film was adhered to the surface of the woven fabric (Comparative Example 3), the initial antifouling performance was good.
Since this film is easily damaged during use, it is understood that the reliability of the antifouling performance is poor.

Next, a test was conducted on the interior materials of Examples 1 and 3 and Comparative Examples 4 and 5 to generate air-borne stains. The results shown in Table 2 below were obtained. This test has 400 sides
3 mm thick felt and aluminum plate with slit-shaped openings (both are the same size as the interior material) are sequentially integrated on the back side of each interior material cut into a square of mm using double-sided adhesive tape, The laminate is arranged so that the surface of the interior material faces downward, and a 500 g polyester / rayon (weight ratio of 65/35) fabric is ignited under the laminate to generate soot, and the aluminum as the upper surface of the laminate is formed. The suction port of the suction device was closely attached to the plate surface via rubber packing so that the slit-shaped opening could be accommodated inside, and after evacuating for 1 minute, the stain state of the fabric surface was observed. In addition, the suction device is a TABAI ESPEC. Pumping speed 4 using CORP oil rotary vacuum pump E2M18
It was operated at 10 liters / min and an ultimate pressure of 1.4 × 10 ⁻³ mbar. The slit opening of the aluminum plate is 3m wide.
m, two openings of 40 mm in length are linearly arranged.

[0031]

[Table 2] From the results in Table 2, when the air-permeable material such as felt is present on the back surface of the interior material, in the interior material of the woven fabric alone (Comparative Example 5), the dirt caused by the ventilation is not concentrated in the intake area, but is widely dispersed. A spot-like stain is produced, and the same back spot-like stain is produced on the backed interior material (Comparative Example 4).
It can be seen that the interior material (Examples 1 and 2) having a film adhered to the back surface does not generate any stain due to ventilation.

[0032]

According to the first aspect of the present invention, the interior material for a high-speed train is made of a flame-retardant polyester yarn as a material, and a water-repellent and oil-repellent knitted fabric with a polyurethane film adhered to the back surface. In addition to having excellent flame retardancy, the function of the water-repellent and oil-repellent treatment agent is fully exhibited, and it shows high sustained antifouling properties against various dirt substances that often adhere in trains,
In addition, since the ventilation between the front and back is blocked by the polyurethane film, even when used on the wall or ceiling inside the train, it is unlikely to cause dirt due to the breathing action of the knitted fabric. Can be maintained over time.

In the interior material for a high-speed train according to the second aspect, since the backing prevents the inclined bending of the knitted fabric,
At the time of its production, the polyurethane film can be easily and reliably stuck, the shape stability of the entire interior material is excellent, the workability of interior construction is good, and a good finished state can be obtained.

According to the manufacturing method of the third aspect, there is an advantage that the interior material for a high-speed train having high antifouling performance can be efficiently and reliably produced continuously.

──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Shigeji Tabashi 52, Ohoricho, Matsubara-shi, Osaka Sumie Textile Co., Ltd. In-house (72) Inventor Hirofumi Akamine 2-28-21, Kamoe, Hamamatsu-shi, Shizuoka (72) Inventor Watatsu Kazuaki 6-4 B-9, Minami-Iba-cho, Hamamatsu City, Shizuoka Prefecture (56) References JP-A-3-63132 (JP, A) JP-A-59-53781 (JP, A) JP-A-63-125331 (JP, A) A) Fully open 1986-103495 (JP, U) (58) Field surveyed (Int. Cl. ⁷ , DB name) B32B 1/00-35/00 B60R 13/02 D03D 1/00-27/18 D04B 1/00-1/28 D04B 21/00-21/20

Claims (3)

(57) [Claims] An interior material for a high-speed train, comprising a knitted fabric made of a flame-retardant polyester yarn and subjected to a water- and oil-repellent treatment, and a polyurethane film attached to the back surface of the knitted fabric. 2. The high-speed train interior material according to claim 1, wherein a polyurethane or polyester backing is provided on the back surface of the knitted fabric, and a polyurethane film is adhered on the backing. 3. A water- and oil-repellent finish is applied to a knitted fabric made of a flame-retardant polyester yarn to allow the knitted fabric to run continuously, and a polyurethane resin liquid is applied to the surface of the continuously running release sheet. Drying to form a polyurethane film layer, further applying a polyurethane resin liquid on the film, continuously applying and laminating the coated surface to the knitted fabric, and releasing the film layer from the release sheet A method for producing an interior material for a high-speed train, characterized by obtaining a knitted fabric having a polyurethane film adhered to the back surface by peeling the knitted fabric from the back surface.