JP5140818B2 - Hood fabric - Google Patents

Description

  The present invention relates to a hood cloth used as a hood cloth for automobiles, for example.

  The hood cloth covering the upper part of the open car and the truck bed is relatively strong and weather-resistant because it is frequently folded and opened and used in harsh natural environments (under wind and rain). Those with properties are required.

  The hood fabric used in this type of hood is a tarpaulin sheet in which a woven or knitted fabric made of nylon or polyester filament is coated with a vinyl chloride resin, or a laminate in which a film layer is formed on a woven or knitted fabric made of polyolefin flat yarn. There are various waterproof sheets such as sheets. In this type of hood fabric, toughness and durability are ensured mainly in the woven or knitted fabric portion (portion serving as the sheet base material).

  By the way, although the conventional hood dough as described above has a considerable durability with respect to tensile strength and weather resistance, it has a relatively poor cut resistance with a blade or the like.

  In addition, the fibers of the sheet base material portion of the hood dough have a property of being easily deteriorated by being cured or denatured when irradiated with light over a long period of time. And when the deterioration of the fibers in the sheet base material portion progresses in this way, there is a problem that the tensile strength of the fibers and the bonding strength between the fibers are weakened, and the cut resistance of the hood fabric is deteriorated.

  Accordingly, the inventors of the present invention have conducted intensive research to increase the cut resistance due to blades and the like in the hood fabric. As a result, the woven or knitted fabric made of para-aramid fiber or polyparaphenylene benzoxazole fiber has excellent cut resistance. I found out. Para-aramid fibers and polyparaphenylene benzoxazole fibers are so-called high-tech fibers.

  The present invention provides a hood fabric excellent in cut resistance by using a woven or knitted fabric made of the above-mentioned para-type aramid fiber or polyparaphenylene benzoxazole fiber as a sheet base material of the hood fabric. This is a first object, and a second object is to prevent the sheet base material portion using such high-tech fibers from being deteriorated by light.

  The present invention has the following configuration as means for solving the above problems. The present invention is directed to a hood cloth used as a hood cloth for automobiles, for example.

This gun onset Ming hood fabric, para-aramid fibers or / and the front and back of polyparaphenylene benzoxazole of fibrous woven or knitted fabric made of sheet substrate each entire surface urethane film made light-shielding layer is provided, the outer surface in use An acrylic fiber fabric is adhered to the outer surface of one light shielding layer . In the following description, the polyparaphenylene benzoxazole fiber may be referred to as PBO fiber.

  The para-aramid fibers and PBO fibers described above are so-called high-tech fibers, and the woven or knitted fabric made of these fibers has a property excellent in cut resistance by a blade or the like.

And the sheet | seat base material employ | adopted for the hood fabric of this application is the woven / knitted fabric using at least any one of the above-mentioned two kinds of high-tech fibers, and the thing of thickness appropriate according to a use is used. In addition, the fiber used for this sheet | seat base material may use only one or both of the said para system aramid fiber and PBO fiber, and may mix the said fiber with the other appropriate fiber .

And in time, it is woven or knitted material made of para-aramid fibers and PBO fibers, while having excellent properties in耐切wound resistance has a characteristic that degradation proceeds easily light hits. When the front and back surfaces of the sheet base material are left exposed, the exposed surface of the sheet base material is exposed to light when used as a hood cloth, so that the deterioration of the fibers easily proceeds.

Therefore, in the hood fabric of the present invention , the front and back surfaces of the sheet base material are respectively covered with a urethane film light-shielding layer so that the front and back surfaces of the sheet base material are not exposed to light.

Each light-shielding layer for front and back surfaces of the sheet substrate, for example, light is formed by wearing bonded urethane film having properties not transmitted (e.g., black).

In addition, this hood fabric is pasted with a fabric made of acrylic fiber on the outer surface in use.

The hood fabric of the present invention is used as a hood cloth by cutting it into a shape according to the application, but even if the front and back surfaces of the hood cloth are exposed to light in the state of use, the entire front and back surfaces of the sheet base material are used. Since each is covered with a light shielding layer, light does not reach (striking) the sheet substrate.

In this gun onset bright, as a sheet base material of the folding top cloth, using comprising woven or knitted from para-aramid fibers or / and polyparaphenylene benzoxazole fibers having excellent耐切wound property, the front and back each entire surface of the sheet substrate Since a light shielding layer made of urethane film is provided, and an acrylic fiber fabric is stuck to the outer surface of one of the light shielding layers that will be the outer surface when in use, a hood fabric with good durability (especially cut resistance by blades, etc.) There is an effect that can be provided. Further, when this hood fabric is used as a hood cloth, even if the front and back surfaces of the hood cloth are exposed to light, the light does not reach the sheet base material. There is an effect that deterioration with light can be prevented in advance (cut resistance can be maintained over a long period of time).

  Hereinafter, a preferred embodiment of the present invention will be described. FIG. 1 shows a hood of the first embodiment of the present application, and FIG. 2 shows a hood of the second embodiment of the present application. 1 and 2 show partially enlarged cross sections of the hood doughs 1 and 1A of the respective embodiments of the present application.

<Reference form>
The hood fabric 1 of the reference form shown in FIG. 1 is configured by sequentially sticking a seal layer 4 and a waterproof layer 3 on one side (upper surface side in FIG. 1) of a sheet base material 2 which is a substantial strength retaining portion. Has been.

  The sheet base material 2 used for the hood fabric 1 is made of a woven or knitted fabric made of, for example, para-aramid fiber or / and polyparaphenylene benzoxazole fiber (hereinafter referred to as PBO fiber), and has an appropriate thickness depending on the application. Used as a sheet. Para-aramid fibers and PBO fibers are so-called high-tech fibers, and a woven or knitted fabric made of these fibers has a property excellent in cut resistance by a blade or the like.

  The woven or knitted fabric used for the sheet base material 2 may be one using only at least one of the two types of high-tech fibers (para-aramid fiber and PBO fiber), or the two types of high-tech fibers ( Both para-aramid fibers and PBO fibers) may be mixed, or other appropriate fibers may be mixed with the high-tech fibers.

In this reference embodiment, the seal layer 4 is made of a urethane film and does not transmit light (for example, black). And this sealing layer 4 is stuck in the state which coat | covers the one surface whole surface of the sheet | seat base material 2 with the contact bonding layer (adhesive) 6. FIG. The seal layer 4 serves as a light-shielding layer on one side in claim 1 of the present application.

In this reference embodiment, a fabric made of acrylic fiber is used for the waterproof layer 3. The waterproof layer 3 is also attached to the outer surface of the seal layer (which becomes a light shielding layer) 4 with an adhesive layer (adhesive) 8.

  The hood fabric 1 is used, for example, as a hood cloth for an automobile, and is installed with the waterproof layer 3 facing outward at the time of use.

In the hood fabric 1 of the reference form shown in FIG. 1, a woven or knitted fabric made of para-aramid fiber or PBO fiber is used as the sheet base material 2. The cutting resistance due to the blade or the like is better than that using the blade, and damage due to the cutting can be prevented for a long time.

  By the way, the above-mentioned high-tech fibers (para-aramid fibers and PBO fibers) used for the sheet base material 2 have a property of being easily deteriorated (decrease in cut resistance) when irradiated with light over a long period of time. . In the hood dough 1 in FIG. 1, since one side (the lower surface in FIG. 1) of the sheet base material 2 is exposed, the exposed surface of the sheet base material 2 is exposed to light when in use, and the deteriorated surface of the fiber. It is not preferable.

<Embodiment>
Canopy fabric 1A embodiment of the present invention shown in FIG. 2, which was so light does not hit the sheet substrate 2 portion, canopy fabric 1A of FIG. 2, the sheet base of hood fabric 1 of the reference embodiment The light shielding layer 5 is provided on the exposed surface of the material 2.

  That is, the hood fabric 1A in FIG. 2 has light-shielding layers (light-shielding films) 4 and 5 attached to the entire front and back surfaces of the sheet base material 2 serving as a core portion in the thickness direction through adhesive layers 6 and 7, respectively. In addition, a waterproof layer (a fabric made of acrylic fiber) 3 is adhered to the outer surface of the light shielding layer 4 on one side (the upper surface side in FIG. 2) via an adhesive layer 7.

  Each of the light shielding layers (light shielding films) 4 and 5 is made of a urethane film and has a property (for example, black) that does not transmit light. The light shielding layers 4 and 5 are attached in a state of covering the entire front and back surfaces of the sheet base material 2.

The hood fabric 1A according to the embodiment of the present invention is also used as, for example, a hood cloth of an automobile, and is installed with the waterproof layer 3 facing outward when used.

  When used as a hood cloth, the front and back surfaces of the hood cloth 1A are irradiated with light, but the entire front and back surfaces of the sheet base material 2 are covered with light-shielding layers (light-shielding films) 4 and 5, respectively. Even if it uses as, this sheet base material 2 does not shine light.

  Therefore, in this hood dough 1A, even if the sheet base material 2 is made of the above-mentioned high-tech fiber (para-aramid fiber or PBO fiber), the sheet base material 2 is not deteriorated by light, and is long-term. There is a function that the original toughness can be maintained.

It is a partially expanded sectional view of the hood dough of the reference form of the present application. Is a partially enlarged cross-sectional view of the canopy fabric of the present Ganmi facilities embodiment.

  1, 1A is a hood, 2 is a sheet base material, 3 is a waterproof layer, 4 and 5 are light shielding layers, and 6 to 8 are adhesive layers.

Claims (1)

A urethane film light-shielding layer (4, 5) is provided on each of the front and back surfaces of a woven or knitted sheet base material (2) made of para-aramid fiber or / and polyparaphenylene benzoxazole fiber. A hood fabric characterized in that an acrylic fiber fabric (3) is adhered to the outer surface of the light shielding layer (4) .

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