JP2009133043A - Hood fabric - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To solve such a problem that conventional hood fabrics are relatively low in incision resistance to cutlery or the like although having considerable durability regarding tensile strength, weatherability and the like. <P>SOLUTION: The hood fabric with high incision resistance to cutlery or the like is provided by using a woven/knitted fabric comprising p-aramid fibers and/or poly-p-phenylene benzoxazole fibers as the sheet base 2 of the hood fabric. <P>COPYRIGHT: (C)2009,JPO&INPIT

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.

Invention of Claim 1 of the Invention The hood of the invention of claim 1 of the present invention is characterized by using a sheet base material made of woven or knitted fabric made of para-aramid fiber and / or polyparaphenylene benzoxazole fiber. 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.

  In the hood fabric of the present application, a waterproof layer (for example, fabric made of acrylic fiber) is laminated on the outer surface in use. And this hood cloth is cut | judged in the shape according to a use, and is used as a hood cloth.

Invention of Claim 2 The invention of claim 2 of the present invention is characterized in that, in the hood fabric of claim 1, the entire front and back surfaces of the sheet base material are respectively covered with a light shielding layer.

  By the way, a woven or knitted fabric made of para-aramid fiber or PBO fiber has a property excellent in cut resistance, but has a property that deterioration easily proceeds when exposed to light. 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 according to claim 2 of the present application, the front and back surfaces of the sheet base material are respectively covered with a light shielding layer so that the front and back surfaces of the sheet base material are not exposed to light.

  Each of the light shielding layers is, for example, a urethane film having a property that does not transmit light (for example, black) or a coating material having a property that does not transmit light is coated on the front and back surfaces of the sheet base material. Formed.

  In addition, a waterproof layer (for example, a fabric made of acrylic fiber) is attached to the hood fabric on the outer surface in use.

  The hood fabric according to claim 2 is also used as a hood cloth by cutting it into a shape according to the application. Even if the front and back surfaces of the hood cloth are exposed to light in the state of use, the front and back surfaces of the sheet base material Since the entire surface is covered with the light-shielding layer, light does not reach (hit) the sheet substrate.

Effect of the Invention of Claim 1 In the invention of claim 1 of the present application, a woven or knitted fabric made of para-aramid fiber or polyparaphenylene benzoxazole fiber excellent in cut resistance is used as the sheet base material of the hood fabric. Therefore, there is an effect that it is possible to provide a hood fabric having excellent durability (particularly cut resistance by a blade or the like).

Effect of the Invention of Claim 2 In the invention of claim 2 of the present invention, the top and bottom surfaces of the sheet base material are respectively covered with the light shielding layer in the top cloth of the above-mentioned claim 1, so that the top cloth is used as the top cloth. When used, even if light hits the front and back surfaces of the hood cloth, the light does not reach the sheet base material (prevents hitting), thus preventing the fibers of the sheet base material from being deteriorated by light. There is an effect that it can be done (the cut resistance can be maintained for a long 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.

First Embodiment of FIG. 1 A hood 1 of the first embodiment shown in FIG. 1 has a sealing layer 4 and a waterproof layer on one side (the upper surface side in FIG. 1) of a sheet base material 2 that is a substantial strength retaining portion. 3 are attached in order.

  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 the first embodiment, the seal layer 4 is made of a urethane film and has a property (for example, black) that does not transmit light. 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 2 of the present application.

  In the first embodiment, the waterproof layer 3 is made of an acrylic fiber fabric. 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 according to the first embodiment 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. Cut resistance by cutting tools and the like is better than that using hood fabric, and damage due to cut 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.

Second Embodiment of FIG. 2 The hood dough 1A of the second embodiment shown in FIG. 2 is configured so that the sheet base material 2 is not exposed to light. The hood dough 1A of FIG. The light shielding layer 5 is provided on the exposed surface of the sheet base material 2 of the hood dough 1 in the form.

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

  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 partial expanded sectional view of the hood dough of this application 1st Embodiment. It is a partially expanded sectional view of the hood dough of 2nd Embodiment of this application.

Explanation of symbols

  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 (2)

  A hood fabric characterized by using a sheet base material (2) made of a woven or knitted fabric made of para-aramid fiber and / or polyparaphenylene benzoxazole fiber.   The hood fabric according to claim 1, wherein the entire front and back surfaces of the sheet substrate (2) are respectively covered with a light shielding layer (4, 5).

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