JP2007046280A - Highly strong protective sheet - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a highly strong protective sheet capable of preventing a collision with a guardrail by improving nighttime visibility for an automobile or a person, without requiring repaint or repair work on the areas of the guardrail with flaking paint or slight damage such as a scratch after removing metallic pieces sticking to the guardrail, while preventing an accident resulting in injury or death by preventing sticking of a metallic piece to the guardrail after tearing off from an automobile's outer steel sheet. <P>SOLUTION: This highly strong protective sheet has a reflection material 3 on one surface of a fabric web 2 composed of highly strong fiber, and can be installed so as to cover a joint 5a and a bolt fastening part 5b of the guardrail 5 by applying a pressure sensitive adhesive 4 to the other surface of the fabric web 2. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a high-strength protective sheet that covers a joint of a guardrail and a bolt fastening portion.

In recent years, it has been reported that a metal piece torn from a car outer iron plate is stuck into a joint of a guardrail or a bolt tightening portion, and a personal accident caused by contact with the metal piece is reported.
The cause of this is that, as already disclosed by the Ministry of Land, Infrastructure, Transport and Tourism, when the vehicle comes in contact, the outer iron plate of the automobile is caught in the convex or concave portion of the guardrail and the outer iron plate is torn into a knife shape. The metal piece that has been torn is stuck into the guardrail.

  Only now has been confirmed, it has been confirmed that metal pieces were stuck in about 38,000 places nationwide.

  For example, it takes a great deal of time and labor to repair the attachment position of the metal piece on the guard rail by welding or the like. Further, when the shape of the guard rail is changed, there is a problem that much more labor and time are required.

  An object of the present invention is to solve such a problem, and prevents a metal piece to be pierced from an automobile outer iron plate in a guard rail to prevent a personal accident, and to remove a metal piece already attached to the guard rail. After removal, minor damage such as paint removal or scratches remaining on the guard rail does not require repainting or repair work, and also improves nighttime visibility for cars and people to prevent collisions with the guard rail. It is to provide a high-strength protective sheet that can be used.

  The high-strength protective sheet according to claim 1 of the present invention is provided with a reflective material on one side of a fabric made of high-strength fibers, and an adhesive or an adhesive is applied to the other side of the fabric so that a guardrail joint and bolt fastening are performed. It is characterized by being able to be mounted so as to cover the part.

  The high-strength protective sheet according to claim 2 is a fabric in which one or more of PBO fiber, polyarylate fiber, polyaramid fiber, and ultrahigh-strength polyethylene fiber is woven, blended, and blended with other fibers as high-strength fibers. It is a manufactured non-woven fabric, woven fabric, knitted fabric, felt or the like.

The high-strength protective sheet according to claim 3 is characterized in that a sign or a character for arousing safety is defined on the reflective material surface.
In the above configuration, as the reflective material, an open bead type reflective material, a glass bead encapsulated type reflective material, a capsule type reflective material, or a prism type reflective material can be used, but it is also considered to be used outdoors during rainfall. Then, a material other than the open bead type reflector is suitable. Further, if the high strength fiber has high tension and high modulus, there is no problem in achieving the purpose of use as the high strength protective sheet. These reflectors and high-strength fibers are laminated by heat welding, an adhesive, an adhesive, or the like.

It is obvious that the metal pieces attached to the guardrail are generated by applying a considerable force due to the collision of the automobile, and are protected with high-strength fibers to withstand these strong external forces.
Furthermore, in the high-strength protective sheet having such a reflective material on one side, the presence of a guardrail becomes clearer by marking the reflective material surface with symbols or characters that call for safety, and safety can be improved.

  As described above, the high-strength protective sheet of the present invention prevents a personal injury by preventing the metal piece torn from the automobile outer iron plate in the guard rail, and after removing the metal piece already attached to the guard rail, No minor repainting or repair work is required on the paint rails that remain on the guard rails or minor damaged parts such as scratches, and it is possible to improve nighttime visibility for cars and people and prevent collisions with the guard rails. A high-strength protective sheet can be provided. Further, even if the high-strength fibers include polyaramid fibers, deterioration with time due to ultraviolet rays occurs, but by laminating a reflective material on the surface, it is possible to improve the weather resistance as well as the reflection function. The presence of the reflective material attached to the high-strength fiber can improve the visibility for drivers and pedestrians and the like, and can reduce the contact of the automobile and pedestrian with the guardrail. Also, when a defect occurs in the high-strength protective sheet due to an automobile coming into contact with the high-strength protective sheet, the defected part causes abnormal reflection by illuminating the inspection. You can find deficiencies. Furthermore, the high-strength protective sheet only needs to be applied so as to cover the joints and bolted portions of the guardrail, and has an advantage that repair and repair work of the guardrail can be completed in an extremely short time.

Hereinafter, an embodiment of the present invention will be specifically described with reference to FIGS. 1 and 2.
In the figure, reference numeral 1 denotes a high-strength protective sheet comprising a reflective material 3 on one side of a fabric 2 made of high-strength fibers and an adhesive 4 applied to the other side of the fabric 2.

  The reflective material 3 has no problem as long as it has a particularly appropriate reflective effect. Specifically, as the reflective material 3, it is possible to use an open bead type reflective material, a glass bead encapsulated type reflective material, a capsule type reflective material, or a prism type reflective material, but it is considered to be used outdoors during rainfall. Then, a material other than the open bead type reflector is suitable. It is desirable that the high-strength fibers, which are the base material to which the reflecting material 3 is attached, be previously subjected to processing such as resin coating in order to enhance adhesion, weather resistance and durability. Coating methods include laminating processing methods such as calendering, laminating and extrusion laminating depending on the form of raw materials, and sol-like liquid coating such as dipping, doctor coating, comma coating, gravure coating, and rotary screen. There is a processing method.

  The resin used for coating is not particularly limited as long as there is no problem of lamination with the reflective material 3 such as vinyl chloride resin, acrylic resin, polyurethane resin, and ethylene vinyl acetate copolymer resin.

Furthermore, known techniques can be applied to the resin, such as adding resin additives such as pigments and weathering assistants, such as ultraviolet absorbers, light stabilizers, and antioxidants, depending on the purpose.
Further, in order to prevent the penetration of rainwater into the fabric 2 mainly composed of high-strength fibers, one or both surfaces of the fabric 2 are coated with a silicone-based, fluorine-based or paraffin-based water repellent, It is desirable to impregnate with a liquid agent.

  By applying the adhesive 4 to the other surface of the fabric 2, the high-strength protective sheet 1 is easily pasted so as to cover the joint 5a and the bolted portion 5b of the guard rail 5 as shown in FIG. be able to. At this time, a reflective material sheet having a size that hides the step portion due to the thickness of the fabric 2 is used as the reflective material 3, and an adhesive is applied to the back surface of the reflective material sheet that protrudes from the fabric 2. Although it is possible to use an adhesive instead of the pressure-sensitive adhesive 4, it is preferable to use the pressure-sensitive adhesive 4 since the curing proceeds with time after application. Further, the pressure-sensitive adhesive 4 has an effect of reducing the impact force by causing a slight shift with respect to an external impact.

  The pressure-sensitive adhesive 4 is not particularly limited, such as acrylic, silicone, or natural rubber, but is preferably an acrylate-based one that has excellent adhesion to an adherend and little changes with time.

If a release paper, a polyethylene film, or the like as a release agent is attached to the surface of the pressure-sensitive adhesive 4 as necessary, handling as a final product becomes easy.
The material of the fabric 2 is any high-strength fiber such as PBO fiber, polyarylate fiber, polyaramid fiber, or ultrahigh-strength polyethylene fiber, or a material containing one or more of these fibers such as nylon, polyester, glass fiber, What is woven, blended, and blended with general-purpose fibers such as metal fibers, polyethylene fibers, and polypro fibers is used, and the fabric 2 in the form of a nonwoven fabric, a woven fabric, a knitted fabric, a felt, or the like manufactured using the same is used. The strength of the fabric 2 itself is roughly determined by the thickness of the fabric 2 and the mass per unit area, and the mass is preferably 100 g / m ² or more, and more preferably 150 g / m ² or more.

  When using polyester or nylon, which is a general-purpose fiber, it has practical strength if it has about three times the mass of high-strength fiber, but the high-strength protective sheet 1 becomes too thick or hard. It has the problem which lacks in flexibility by passing too much.

  By the way, in the embodiment shown in the drawings, the joint 5a and the bolt fastening portion 5b of the guard rail 5 are integrally covered with the high strength protective sheet 1, but the joint 5a and the bolt fastening portion 5b of the guard rail 5 are separately covered. Also good.

Examples and Comparative Examples are described below, and the evaluation results are shown in Table 1.
Evaluation Method As shown in FIG. 3, the actual guard rail members 6 and 6 were used and connected with the bolts 7 in the same manner as the normal connecting portion to form step portions of the guard rail members 6 and 6. Samples 8 of the following examples and comparative examples were attached so as to cover the joints (stepped portions) 6a and the bolted portions 6b of the guardrail members 6 and 6.

  The connected guardrail members 6 and 6 are tilted at an angle of 45 degrees so that the seam 6a is positioned above the bolted portion 6b, and a 10 kg rectangular iron block 9 is slid 50 cm to joint 6a. Durability tests were carried out by hitting the bumps of the steel and the damage was compared.

Example 1
Based on 100% of Technora (registered trademark) MSP0201 manufactured by Teijin Ltd. as a high-strength fiber, a plain weave fabric having a mass of 152 g / m ² and a base of 250 denier polyester manufactured by Kambo Plus Co., Ltd. A tarpaulin made of soft vinyl chloride was laminated on both surfaces of the cloth, and a reflecting material APR700 subjected to a glass bead encapsulating type reflecting material processing was attached to one side of this tarpaulin by using Bond G17 manufactured by Konishi Co., Ltd. A commercially available double-sided adhesive tape was used for attaching the base material to the card rail.

Example 2
Reflector Diamond Grade (registered trademark) manufactured by Sumitomo 3M Co., Ltd. on one side of a fabric having a mass of 102 g / m ² made of plain weave using 100% of Vectran (registered trademark) 0133 manufactured by Kuraray Co., Ltd. as a high-strength fiber. ) Flexible type 3910 was attached. A commercially available double-sided adhesive tape was used for attaching the base material to the card rail.

Example 3
Although it has the same plain weave structure as Example 1 made using Technora (registered trademark) MSP0201 manufactured by Teijin Limited as a high-strength fiber, Technora (registered trademark) using E glass fibers for half of the warp and weft Reflective material APR700 manufactured by Kambo Plus Co., Ltd. was used on one side of a fabric having a mass of 220 g / m ² produced by interweaving MSP0201 and E glass fibers alternately arranged using Bond G17 manufactured by Konishi Co., Ltd. Pasted. A commercially available double-sided adhesive tape was used for attaching the base material to the card rail.

Comparative Example 1
Reflector APR700 manufactured by Kambo Plus Co., Ltd. was attached to the guardrail using a commercially available double-sided adhesive tape.

Comparative Example 2
Reflective Material Diamond Grade (registered trademark) Flexible Type 3910 manufactured by Sumitomo 3M Co., Ltd. used as a reflective material Polyester canvas final (registered trademark) TD660 540g / after paste m ^2, and affixed to the guardrail with a commercial double-sided adhesive tape.

Comparative Example 3
A soft vinyl chloride coated polyester canvas final (registered trademark) TD200 750 g / m ² manufactured by Daiwabo Co., Ltd. was attached to a guardrail using a commercially available double-sided tape.

The results are shown in Table 1.

  As described above, in Examples 1 to 3 using high-strength fibers, cutting of the fabric did not occur. However, as in Comparative Example 1, those using the reflective material APR700 manufactured by Kambo Plus Co., Ltd. and Comparative Examples In the case of using a soft vinyl chloride coated polyester canvas final (registered trademark) TD660 manufactured by Daiwa Boseki Co., Ltd. as shown in 2, cutting occurred at the portion where the block collided. In Comparative Example 3, the soft vinyl chloride coated polyester canvas final (registered trademark) TD200 manufactured by Daiwa Boseki Co., Ltd. was partially cut at the portion where the block collided.

In addition, in order to see the effect of visibility, when the collision part was illuminated with a light, a reflector was clearly attached, and the abnormality of reflection was clearly seen and some damage was well understood.
Even the brightness of an outdoor streetlight was immediately recognized as an abnormal reflection.

  On the other hand, in Comparative Example 3 in which no reflective material was applied, the damaged site was hardly discernable even when the light was lit up.

It is sectional drawing of the high strength protection sheet in one embodiment of this invention. It is sectional drawing which shows the state which affixed the high strength protection sheet | seat so that the joint of a guardrail and a bolt fastening part might be covered. It is explanatory drawing which shows the endurance test method of the Example and comparative example of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 High strength protection sheet 2 Fabric 3 Reflective material 4 Adhesive 5 Guard rail 5a Seam 5b Bolt tightening part

Claims (3)

A high-strength fiber fabric is provided with a reflective material on one side, and an adhesive or a pressure-sensitive adhesive is applied to the other side of the fabric so that it can be mounted so as to cover the seam and bolted portion of the guardrail. Strong protection sheet. Non-woven fabrics, woven fabrics, knitted fabrics, felts, etc. produced by interweaving, blending and blending other fibers with PBO fibers, polyarylate fibers, polyaramid fibers, and ultra-high strength polyethylene fibers as high-strength fibers The high-strength protective sheet according to claim 1, wherein the high-strength protective sheet is provided. The high-strength protective sheet according to claim 1 or 2, wherein a safety sign or character is drawn on the reflective surface.

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