JPH08332818A - Snow chain substitute - Google Patents

Abstract

PURPOSE: To resolve difficulty for use due to weight and high elasticity by fitting a tread sheet to the tread face of an automobile tire with a fastening member. CONSTITUTION: This snow chain substitute 1 is constituted of a tread sheet 2 and an adhesive layer 3 directly coated and formed on its face, and the tread sheet Z is directly stuck to a tread face T1 and is fitted to a tire T. The tread sheet 2 is constituted of a base sheet 4 and an elastomer layer fitted to it as a tread pattern 5. The tread pattern 5 is mounted with a hole board formed with tread pattern-like hole sections on the base sheet 4 in advance, an elastomer liquid raw material is injected to the hole board, then it is squeeze- processed and hardened to obtain the tread pattern 5. Two types of hole boards forming large and small hole sections are used for lamination in two stages, the hole board of the second stage is mounted after the elastomer liquid raw material injected to the hole board of the first stage is nearly hardened, and the squeeze processing and hardening are repeatedly applied.

Description

Detailed Description of the Invention

[0001]

[Object of the invention]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a substitute for a snow chain to be mounted when traveling on an icy and snowy road surface.

[0002]

BACKGROUND OF THE INVENTION Conventionally, a snow chain called a ladder type or a turtle shell type has been attached when traveling on an icy and snowy road surface, but a popular version of the snow chain is made of metal and is very heavy for women and women. It was very difficult to handle, and even those made of rubber or resin were quite rigid due to their elasticity and were difficult to use unexpectedly. On the other hand,
In marathon shoes, etc., in order to reduce the weight of the shoes and pursue shock absorption, the bottom of the grounding surface is made of solid rubber or high density sponge, and the upper layer is made of EVA (ethylene vinyl acetate), which is lightweight and has excellent cushioning properties. In this connection, the applicant has placed a stencil in a close contact state on a non-woven fabric, pouring a polyurethane elastomer liquid raw material into the stencil, and performing a squeegee treatment. After that, a method of forming a concavo-convex shaped sheet by heating and curing, etc. has been filed as "concavo-convex shaped sheet and its manufacturing method" (JP-A-7-205).

As the base sheet, various materials such as a rubber sheet, a non-woven fabric, and a carbon fiber woven cloth can be used as the base sheet of the concave-convex molded sheet, and the entire sheet is flexible, and the base sheet and the elastomer as a concave-convex pattern are used. Since the adhesion with the layer is also strong, the present invention has been completed with the idea that it can be used as a substitute for a snow chain.

[0004]

[Technical Items Attempted to Develop] The present invention has been made in view of such a background, and provides a snow chain substitute that eliminates the difficulty of use due to the weight and high elasticity of the conventional snow chains. Is what you are trying to do.

[0005]

Configuration of the Invention

That is, a snow chain substitute as a first invention according to the present application has a tread sheet having a tread pattern made of an elastomer layer on one surface of a base sheet, and a tightening member for the sheet. Tread sheet
Place a stencil on which a tread pattern-shaped hole is formed in advance on the base sheet on the base, inject the elastomer liquid raw material into the stencil, and further squeegee treatment, then cure it, or preliminarily set it on the base. Place a stencil with a tread pattern of holes, inject the elastomer liquid raw material into the stencil, and after squeegee treatment, cover it with a base sheet and press and hold from above, and in this state the elastomer It is obtained by curing a liquid raw material, and is characterized in that a tread sheet is attached to a tread surface of an automobile tire with a tightening member for use.

The snow chain substitute according to the second invention of the present application is further characterized in that the tightening member is an adhesive layer formed on the back surface of the tread sheet.

Further, the snow chain substitute according to the third invention of the present application is also characterized in that the tightening member is composed of a tightening band and a tightening ring. Accordingly, the above-mentioned object is to be achieved.

[0008]

According to the snow chain substitute of the present invention, the elastomer liquid raw material is injected into the stencil in which the tread pattern-like holes are formed, squeegeeed and then cured to form the elastomer layer on the base sheet. A tread sheet having a tread pattern made of is attached to the tread surface of an automobile tire by a tightening member for use. For this reason, the tread sheet as a whole is flexible and light, so that it is easy to handle at the time of mounting. The point of adhesion between the base sheet and the tread pattern can also endure as a tire tread.

Further, in the snow chain substitute according to a second aspect of the present invention, the tightening member is a pressure-sensitive adhesive layer formed on the back surface of the tread sheet, whereby it can be mounted on the tread surface of an automobile tire very easily. .

Further, the snow chain substitute according to claim 3 has a structure in which the tightening member includes a tightening band and a tightening ring. As a result, the tire is securely and detachably mounted on the tread surface of the automobile tire.

[0011]

1 shows an embodiment of a snow chain substitute of the present invention. In this embodiment, the tightening member is an adhesive layer formed on the back surface of the tread sheet. That is, the snow chain substitute 1 comprises a tread sheet 2 and an adhesive layer 3 directly applied and formed on the back surface of the tread sheet 2. The adhesive layer 3 allows the tread sheet 2 to be directly attached to the tread surface T1. It is attached to T. The tread sheet 2 is composed of a base sheet 4 and a tread pattern 5, which is an elastomer layer adhered to the base sheet 4, and the tread pattern 5 of the illustrated embodiment is basically a combination of triangles and squares, and a pattern of large and small similar shapes. 51 and 52 (each having a height of about 1 to 2 mm) are vertically stacked, and the horizontally adjacent ones are arranged in the opposite directions and repeated. Incidentally, 31 is a release paper for the adhesive layer 3.

Although the details of the method for producing the tread pattern are omitted, basically, a stencil having holes for the tread pattern is previously placed on the base sheet, and the elastomer liquid raw material is placed on the stencil. It is obtained by injecting, squeegeeing, and then curing this. When stacking in two upper and lower layers, two types of stencil plates having large and small holes are used, and the first stage is used. Looking at the time when the elastomer liquid raw material injected into the stencil is almost cured, place the second stage stencil, squeegee treatment,
It is obtained by repeating curing. The stencil used in the method described in the above-mentioned JP-A-7-205 is changed to a suitable one for the tread pattern, and is obtained in the same manner. Also,
As disclosed in the publication, place the stencil on the base first,
The elastomer liquid raw material may be injected into the stencil, and after the squeegee treatment, the base material sheet may be covered and pressed to obtain the elastomer liquid raw material in the order of curing.

Here, as the base sheet, abrasion resistance,
Various strengths such as tensile strength, heat resistance, and adhesion to the tread pattern that is an elastomer layer are required, but basically, various materials such as synthetic resin and rubber can be applied, and non-woven fabric-like, artificial leather-like, etc. Of course, glass fiber woven cloth, carbon fiber woven cloth, etc. obtained by plain weaving glass fiber, carbon fiber, aramid fiber and the like can also be used. In the case of a material having poor adhesion to the tread pattern, it is advisable to apply a film of a material similar to the elastomer layer such as a urethane film to the base sheet in advance.

The elastomer layer is basically formed by curing an elastomer liquid raw material, is formed into a pattern suitable for slip resistance and is distributed on the base sheet, and a polyurethane elastomer can be preferably used as an example of the raw material. When pouring the liquid raw material onto the base sheet, in addition to the method of mixing the two liquids constituting the liquid raw material in the container, defoaming and pouring, in a cylinder using a static mixer that is often used industrially Various methods such as a method of mixing two liquids and injecting from a nozzle, or a method of injecting by spraying liquid raw materials while colliding and mixing in the air at the nozzle tip are applicable. By the way, when this method of mixing by collision is used, small bubbles are introduced into the cured elastomer layer, which can also serve as pores for absorbing water existing between the surface and the road surface, which is advantageous.

The above-mentioned polyurethane elastomer is one which is cured by heating two liquid raw materials of a prepolymer and polyisocyanate and then heating them, and is particularly suitable as a polyurethane elastomer which is sprayed and fed from a nozzle. SX-320A & B manufactured by Mitsui Toatsu Chemical Co., Inc., solvent-free quick-hardening urethane resin Efletane (trade name) manufactured by Nippon Synthetic Chemical Industry Co., Ltd., and Niprolan (registered trademark) manufactured by Dainippon Polyurethane Industry Co., Ltd., which is a prepolymer. ) Is a polyisocyanate Pandex (registered trademark) of Dainippon Ink and Chemicals, Inc.
And the like can be used. In addition, for adjusting viscosity, adjusting hardness, coloring, etc., an appropriate solvent,
You may add a thickener, a coloring pigment, etc.

Next, another embodiment will be described.
In this embodiment, the tightening member has a tightening band and a tightening ring. That is, as shown in FIGS. 2 and 3, this snow chain substitute 1 has a wide net belt-shaped overnet 6 that covers the tread sheet 2 on its peripheral surface, and the ends of the overnet 6 are tensioned in the inner circumferential direction. It consists of a rubber ring 7. And in the illustrated embodiment,
The overnet 6 is formed by combining glass fiber plain weave in a lattice pattern, spike pins 8 are fixed to the intersections, hooks 9 are fixed to both ends, and the tread pattern 5 of the tread sheet 2 is further fixed. The tread sheet 2 is fixed by being positioned between the lattices. Then, after covering the tire T with these, the rubber ring 7 is hooked and attached to the hook 9.

In these snow chain substitutes, if the thickness of the base sheet is 1 to 2 mm and the thickness of each tread pattern is 1 to 2 mm, the thickness is 1 to 2 mm in the thin portion and 3 to 3 in the thick portion where the tread pattern is present. Since it can be configured to be 6 mm, it is possible to secure sufficient flexibility as a whole, and it is possible to configure a lightweight and strong one. Therefore, like conventional rubber and resin,
Due to its high elasticity, it is no longer difficult to bend or hard to wear due to its strong habit. In addition, when the adhesive member is formed on the back surface of the tread sheet, the adhesive member is simply attached to the tread surface of the tire, and thus can be attached very easily. Further, when the tightening member is composed of a tightening band such as an overnet or a rubber ring and a tightening ring, it can be securely and detachably mounted on the tread surface of an automobile tire with the same feeling of security as in the conventional case.

Although the overnet 6 is integrated by covering the tread sheet 2 in the above-mentioned embodiment, it may be fixed inside the tread sheet or the hook may be formed directly on the base sheet. Of course it is also good. Further, in the above embodiment, the tread pattern 5 is formed only on one surface of the base sheet 4, but in order to prevent slippage between the tread surface of the tire and the back surface of the tread sheet, the tread sheet, that is, the back surface of the base sheet, is formed. Alternatively, an appropriate uneven pattern of the elastomer layer may be formed. Further, the tightening member is not limited to the pressure-sensitive adhesive layer or the tightening band and the tightening ring as in the above-mentioned embodiment, but the point is that the tread sheet can be fixed so as not to be displaced or separated from the tread surface of the running tire. Good. The tread pattern 5 of the illustrated embodiment is basically V-shaped, and large and small similar patterns 51 and 52 (each having a height of about 1 to 2 mm) are laminated in upper and lower two stages. And a shape in which laterally adjacent ones are arranged in an inverted V shape with respect to each other is repeated. Incidentally, 31 is a release paper for the adhesive layer 3.

[0019]

Therefore, according to the snow chain substitute of the present invention, the tread sheet has high flexibility, particularly in the base sheet portion, and the adhesion between the base sheet and the tread pattern elastomer layer is strong. Can function well as a snow chain alternative,
It can be provided as an easy-to-wear item that does not have difficulty in use due to the weight and rigidity of a conventional snow chain.

[Brief description of drawings]

FIG. 1 is a perspective view showing an embodiment of a snow chain substitute of the present invention as a state when mounted on a tire.

FIG. 2 is a perspective view showing a snow chain substitute of another embodiment in an exploded state.

FIG. 3 is a perspective view showing a state where the snow chain substitute is mounted on a tire.

[Explanation of symbols]

 1 Snow chain substitute 2 Tread sheet 3 Adhesive layer 31 Release paper 4 Base sheet 5 Tread pattern 51 Pattern 52 Pattern 6 Overnet 7 Rubber ring 8 Spike pin 9 Hook T Tire T1 Tread surface

Claims (3)

[Claims] 1. A tread sheet having a tread pattern formed of an elastomer layer on one surface of a base sheet, and a tightening member for the sheet, wherein the tread sheet has a tread pattern-shaped hole portion previously formed in the base sheet on a base. Place the stencil on which the stencil is formed, inject the elastomer liquid raw material into the stencil, and further perform squeegee treatment, then cure the stencil, or place the stencil on which the tread pattern-shaped pits are formed in advance Placed, injecting the elastomer liquid raw material to this stencil, after further squeegee treatment, by covering it with a base sheet and pressing and holding from above, it is obtained by curing the elastomer liquid raw material in this state, A snow chain substitute characterized in that a tread seat is attached to the tread surface of an automobile tire with a tightening member for use. 2. The snow chain substitute according to claim 1, wherein the tightening member is an adhesive layer formed on the back surface of the tread sheet. 3. The snow chain substitute according to claim 1, wherein the tightening member includes a tightening band and a tightening ring.