JPH05254070A - Vehicle interior material - Google Patents

Abstract

PURPOSE:To obtain a vehicle interior material excellent in water repellency and abrasion resistance by deeply impregnating cloth with a water repelling agent until reaching the rear of the cloth and infiltrating a backing agent in the ear of the cloth. CONSTITUTION:A vehicle interior material is produced by dipping cloth in a water repelling agent solution to impregnate the same with a water repelling agent and drying the impregnated cloth under heating and subsequently applying a backing agent based on an ultraviolet curable resin to the rear of the cloth to solidify the same on the rear of the cloth by the irradiation with ultraviolet rays.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle interior material which is used for chairs, ceilings, floors and the like of airplanes, trains, automobiles and the like.

[0002]

2. Description of the Related Art Conventionally, synthetic leather has been widely used as a vehicle interior material, but recently, instead of synthetic leather, cloth has been used as a vehicle interior material. However, cloth is a kind of fiber aggregate, and unlike synthetic leather, it retains heat and moisture,
It has breathable water permeability, feels good on the skin and does not give a stuffy feeling,
There is a problem in that water easily penetrates and the surface is fluffed and easily worn.

Therefore, a backing agent is applied to the back surface of the cloth to bond the fibers from the front surface to the back surface, thereby providing a backing process for suppressing fuzz and abrasion of the cloth surface, and adding a water repellent to stain the cloth surface. Water-repellent treatment to suppress is made.

In this case, an emulsion resin in which fine resin particles are dispersed in water is used as the backing agent, and in the paste resin in which the resin particles are mixed and swelled, the plasticizer contained therein volatilizes to cloud the window glass. Since it is not used, a resin solution in which a resin is dissolved in an organic solvent is not used because the organic solvent is harmful to the human body, and hot-melt resin is as viscous as an emulsion resin even if it is heated and melted. Since it cannot be penetrated between the fibers inside the fabric, it is not used for a lining process that suppresses fluffing and abrasion of the fabric surface.

As the water repellent, a fluororesin-based repellant such as polytrifluoroethyl acrylate, polytrifluorochloroethylene, polytrifluoroethyl methacrylate, polypentadecafluorooctyl acrylate, and tetrafluoroethylene / hexafluoropropylene copolymer is used. Water solution, organopolysiloxane, amino-modified siloxane,
A silicone resin-based water repellent such as epoxy-modified siloxane is used.

[0006]

The water-repellent agent is difficult to penetrate into the inside of the cloth even when it is sprayed onto the surface of the cloth, and it is difficult to apply the water-repellent agent to the surface of the cloth. It is considered desirable to apply by a dipping method in which is immersed in a water repellent solution, squeezed, and dried by heating.

In this case, if the backing process is carried out prior to the water repellent process, the coating of the backing agent blocks the internal permeation of the water repellent, and the coating film of the backing agent is also covered with the water repellent. Since it becomes difficult to adhere the interior material, the lining process will be performed after the water repellent process.

However, since the backing agent used for the backing process as described above is an emulsion in which resin particles are dispersed in water, it is difficult to adhere to the cloth which is rendered water repellent by the water repellent process, which is It cannot function effectively to prevent the shift of the texture of the fabric and suppress the surface abrasion, and therefore the water repellent treatment must be performed by spraying before or after the backing treatment, and thus, by the dipping method. As a result, it is not possible to perform durable water-repellent treatment.

Therefore, in particular, in the pile fabric in which the surface fluff is closely projected, the water repellent agent only slightly adheres to the tip of the pile, and when the vehicle interior is used, the pile tilts and the water repellent agent is applied. Since the side surface of the pile where no water is attached is exposed on the surface, the effect of the water repellent treatment is not expected to the left.

Therefore, according to the present invention, the water repellent is sufficiently permeated into the inside of the cloth, and the backing agent is permeated into the back surface of the cloth to obtain a vehicle interior material excellent in water repellency and abrasion resistance. The purpose is to

That is, a vehicle interior material according to the present invention has a water repellent agent applied to the front and back of a cloth to impregnate the inside of the cloth, and a resin composition containing an ultraviolet curable resin as a main material is used. It is characterized in that it is applied on the back surface and penetrates between the fibers inside the cloth. The cloth is dipped in a water repellent solution to impregnate the water repellent inside the cloth, and then heat-dried. After that, a backing agent containing an ultraviolet curable resin as a main material is applied to the back surface of the cloth, and the applied surface is irradiated with ultraviolet rays to solidify the backing agent.

The term "ultraviolet curable resin" means a wavelength of 2
It means a resin that is cured by 000-4000 Å ultraviolet rays but is not cured by visible light or infrared rays in other wavelength regions. Stearyl acrylate, stearyl methacrylate, triacryl isocyanurate, cyclohexanediol diacrylate, cyclohexanediol dimethacrylate, Various monomers having radically polymerizable unsaturated groups such as spiroglycol diacrylate and spiroglycol dimethacrylate, and oligomers having a molecular weight of 200 to 4000 having radically polymerizable unsaturated groups, benzoquinone, benzoin, benzoin methyl ether, benzoin isopropyl ether Photosensitizers or UV curing initiators such as hydroxyethyl acrylate, trimethylolpropane triacrylate, tetramethylolmethane A photoreactive plasticizer such as traacrylate, dipentaerythritol pentaacrylate, trimethylolpropane trimethacrylate, and tetramethylolmethane tetramethacrylate is added to prepare a liquid, and the thickness of the coating film is adjusted to about 50 μm to 200 μm. Apply to the back of the fabric with a gravure roll, etc.
It is irradiated with ultraviolet rays and solidified.

A halogen composition, especially a bromine / antimony type flame retardant or a phosphoric acid type flame retardant can be added to a resin composition containing an ultraviolet curable resin as a main material, whereby the marked line in the flame retardancy test FMVSS-302 is obtained. It is possible to obtain a vehicle interior material with high flame retardance that self-extinguishes itself.

In addition, various functional agents such as antibacterial and antifungal agents, pest repellents, insect repellents, fragrances, deodorants, etc. should be added to the resin composition mainly composed of an ultraviolet curable resin. You can also

When it is desired to reduce the coating amount of the resin composition containing an ultraviolet curable resin as a main material, it is preferable to use a gravure roll to finely disperse the resin composition in a dot shape, a linear shape, a grid shape, or the like.

As the water repellent, the above-mentioned fluorine resin water repellent or silicone resin water repellent is used. The cloth constituting the vehicle interior material may be any of woven fabric, knitted fabric, non-woven fabric, felt and pile fabric.

[0016]

EFFECT OF THE INVENTION The ultraviolet-curable resin composition constituting the present invention does not contain water as an essential component and exhibits good adhesiveness even on the back surface of a water-repellent cloth, so that it penetrates between fibers inside the cloth,
In the case of pile cloth, it penetrates between the base of the pile and the base cloth or base woven / knitted fabric to bond them, thereby providing a vehicle interior material with excellent wear resistance and pile removal strength. Will be

Further, since the water repellent treatment is carried out by the dipping method prior to the backing treatment, the water repellent agent penetrates deeply into the pile fabric as far as the root of the pile. The backing agent coating film for the backing process, which will be performed later, covers the back surface to which the water repellent is attached, so that the obtained vehicle interior material is excellent in water repellency and stain resistance and can be bonded.

The UV-curable resin composition used for the backing process is one which is solidified by ultraviolet rays and does not cure or solidify by visible light, so it is not necessary to perform the backing process in the dark, and it is cured by infrared rays. -It does not solidify, and unlike conventional emulsion resins, it does not require a heat-drying process, so a long processing device is not required for the backing process.

Further, since the backing process does not require a heating step, synthetic fibers having a low softening point such as polypropylene fiber, vinylon fiber, vinylidene chloride fiber, vinyl chloride fiber, acrylic fiber, etc., in which the fabric is easily heat-shrunk, are used. Even if configured, there is no heat deformation during the lining process, and the process control in the lining process is simplified.

As described above, according to the present invention, it is possible to efficiently obtain a vehicle interior material which is excellent in water repellency, antifouling property, abrasion resistance, and pile removal strength and which can be easily bonded.

[0021]

[Embodiment] Polyester fiber fabric raw fabric (weight: 350
g / m ² ) is dipped and squeezed in a 5% solution of a commercially available fluororesin water repellent, dried by heating at 110 ° C. for 3 minutes, and then heated at 150 ° C.
Cure for 1 minute. Next, 6 parts by weight of urethane acrylate (Nippon Kayaku Co., Ltd. product name: UX7101) and 3 parts by weight of epoxy acrylate (Kyoeisha Yushi Co., Ltd. product name; M-600A) were added to a photopolymerization initiator (Merck Co. product name; Darocure # 1173). ) Is added to the back surface of the cloth at a coating amount of 60 g /
m ^{2 was} applied, and the backing agent was cured and solidified by irradiating an ultraviolet lamp for 7 minutes in a nitrogen gas atmosphere to obtain a vehicle interior material having physical strength and water repellency as an automobile interior material.

Claims (2)

[Claims] 1. In a vehicle interior material finished by coating and impregnating the back surface of a cloth with a resin composition, (a) a water repellent is applied to the front and back of the cloth to impregnate the inside of the cloth, ( b) A vehicle interior material, wherein the resin composition is mainly composed of an ultraviolet curable resin. 2. A cloth is dipped in a water repellent solution to impregnate the inside of the cloth with a water repellent, and after heating and drying, a backing agent containing an ultraviolet curable resin as a main material is applied to the back surface of the cloth. A method for producing a vehicle interior material, which comprises applying the coating material and irradiating the coating surface with ultraviolet rays to solidify the backing agent.