JPH0535864Y2 - - Google Patents

Description

[Detailed explanation of the idea] [Industrial application field] The present invention relates to a floor mat for a vehicle.

[Prior Art] Vehicle floor mats are used to perform various functions such as sound absorption, sound insulation, and heat insulation on the floor surface of a vehicle, and to improve the aesthetic appearance and texture of the interior of a vehicle.

The most common material is vinyl chloride resin, which is an inexpensive general-purpose resin and has a high degree of freedom in coloring and molding. A laminated structure in which a surface layer 2 made of a non-foamed vinyl chloride resin is formed on the top surface of a base layer 1 is often used.

The surface of the surface layer 2 has an uneven pattern (grain) 3.
is transferred to give it a design, for example, there are products that have an appearance resembling natural leather.

The grains 3 are formed by heating and softening a sheet material formed by calendering or extrusion processing, introducing it into a vacuum forming mold whose forming surface has been previously grained, and vacuum forming it into a mat shape. Alternatively, in the case of non-formed type floor mats that are not vacuum formed, after calendering or extrusion processing, the sheet material is embossed using an embossing roll and grained before it has completely cooled down.

[Problems to be solved by the invention] However, the floor mat obtained in this manner tends to have gloss on its surface. In particular, vacuum-formed products have a high level of gloss, and too much gloss makes it difficult to obtain a luxurious feel.
Usually, gloss is reduced by applying a matting agent 5 to the surface (FIG. 2). However, the matte treatment increases material costs, increases the number of steps, and reduces productivity, which is economically disadvantageous.

Therefore, an object of the present invention is to reduce the gloss of a vehicle floor mat and improve its quality without increasing the material cost or the number of steps.

[Means for Solving the Problems] The structure of the present invention for solving the above problems is as follows.
To explain with a diagram, a vehicle floor mat includes a base layer 1 made of a vinyl chloride resin foam or a vinyl chloride resin non-foamed material, and a surface layer 2 made of a vinyl chloride resin non-foamed material formed on the top surface of the base layer 1. A grain 3 is provided on the surface of the surface layer 2, and finer irregularities 4 are formed on the entire surface of the grain 3.

[Effect] Generally, gloss is largely related to surface smoothness.
The smoother the surface, the higher the reflectance of light and the higher the gloss. In the above structure, fine irregularities 4 are formed on the entire surface of the grain 3 surface to increase the surface roughness, so the light that reaches the floor mat surface is diffusely reflected by the irregularities 4, reducing the reflectance and reducing the gloss. let

[Example] Next, the present invention will be explained in detail with reference to examples.

FIG. 1 is a partial sectional view of a floor mat for a vehicle. In the figure, a surface layer 2 made of a non-foamed vinyl chloride resin is formed on the upper surface of a base layer 1 made of a vinyl chloride resin foam. As the base layer 1,
A non-foamed vinyl chloride resin may be used instead of the vinyl chloride resin foam, and in this case, it is common to use a recycled material containing more additives than the resin constituting the surface layer.

Grains 3 are formed on the surface of the surface layer 2, so that, for example, an uneven pattern similar to natural leather stands out. On the grain 3 side, there are finer unevenness 4 on the entire surface.
is formed. For example, the size of the grain 3 is such that the distance L between the peak and trough of the grain 3 in Fig. 1 is approximately
The height H is approximately 0.2 to 0.5 mm.
In addition, the size of the unevenness 4 is such that the diameter d is approximately 0.2 to 0.3 mm.
Appropriately, the height h is about 0.1 mm.

When producing the above vehicle floor mats,
For example, a resin material that has been softened and melted by heating is rolled between multiple rolls (calendering), and a sheet material is produced in which a surface layer 2 of a non-foamed vinyl chloride resin is laminated on the top surface of a base layer 1 of a vinyl chloride resin foam. obtain. The sheet material is then heated with a heater to soften it, guided into a vacuum forming mold whose molding surface is grained to match the shape of the grain, and held for a certain period of time.The sheet material is vacuum formed into the desired shape and at the same time the grain 3 is transferred. .

As a method for forming the unevenness 4, engravings corresponding to the unevenness 4 may be further applied to a vacuum molding die that has been subjected to the graining process, so that the graining 3 and the unevenness 4 are formed at the same time during vacuum forming. Alternatively, a vacuum molding mold in which the molding surface is roughened by bombarding the molding surface with fine sand particles at high speed (shot blasting) may be used.

In addition, for non-formed type floor mats that are not vacuum formed, it is possible to make fine irregularities on the surface of the calender roll or the embossing roll placed next to the extruder, so that the irregularities 4 are added at the same time as graining. good.

After trimming the obtained molded product,
Perform secondary processing to produce products.

Next, the effects of the present invention were confirmed using samples prepared by the method described above. The sample used was one in which the base layer 1 had a thickness of 1.7 mm and the surface layer 2 had a thickness of 0.3 mm.

For comparison, a matting treatment agent of acrylic-vinyl chloride resin + acrylic-silicone resin was applied to the surface of a sheet material formed by calendering or extrusion processing, and then vacuum forming was performed using the usual method. A matte product (matte-treated product) and a product without matte treatment and no unevenness formation (untreated product) were prepared.

For each sample obtained, the specular gloss (Gs) was measured using a commercially available gloss meter, and the results were reported in the third column.
Shown in the figure. Specular gloss (Gs) is determined by assuming that the angle of incidence from the emitter and the angle of acceptance at the receiver are constant.
The glossiness of the sample is expressed by the reflectance of light; the smaller the value, the lower the glossiness.

As is clear from the figure, the structure of the present invention is
It was confirmed that a sufficient gloss reduction effect was observed compared to the untreated product, and that a value almost at the same level as the matte-treated product was obtained.

[Effects of the Invention] As described above, according to the present invention, gloss can be easily reduced by the fine irregularities formed on the grained surface, and a floor mat for a vehicle with excellent appearance and texture can be obtained. Therefore, since there is no need to perform matting treatment, material costs can be reduced and productivity can be improved, which is extremely advantageous industrially.

[Brief explanation of the drawing]

FIG. 1 is a partial cross-sectional view of a vehicle floor mat of the present invention, FIG. 2 is a partial cross-sectional view of a conventional vehicle floor mat, and FIG. 3 is a diagram showing the results of measuring glossiness in an embodiment of the present invention. 1... Base layer, 2... Surface layer, 3... Grain, 4...
...Unevenness.

Claims (1)

[Scope of utility model registration request] It has a base layer made of a vinyl chloride resin foam or a non-foamed vinyl chloride resin, and a surface layer made of a non-foamed vinyl chloride resin formed on the upper surface of the base layer, and the surface of the surface layer is provided with wrinkles. In addition, a floor mat for a vehicle is characterized in that finer unevenness is provided on the entire surface of the wrinkled surface.