JPS61293817A - Manufacture of slip-proof projections in doormat - Google Patents

Abstract

PURPOSE:To enable to form a large number of projections, which are essential for slip-proofing, onto the bottom of a mat by a method wherein plasticizer prepared by mixing plastisol with DOP (dioctyl phthalate), paraffin or mineral oil base diluent or the like at a ratio of 1:1 is sprayed so as to adhere to receiving holes. CONSTITUTION:In a process of molding a doormat, onto the front surface side of which flocked carpet 6 is fixed by solvent welding by heat-treating plastisol, plasticizer (a), which forms a mat main body 4 and is prepared by mixing plastisol with DOP (dioctyl phthalate), paraffin or mineral oil base diluent or the like at a ratio of 1:1, is sprayed so as to adhere to receiving holes and their vicinities in order to improve the compatibility between the receiving hole 3 and sol solvent. According to the above-mentioned technique, the plastisol is smoothly packed in the receiving holes 3 formed on the bottom part 2 of a mold in order to integrally mold slip-proof projections 5 on the rear surface side of a mat 4, onto the surface of which the carpet 6 is solvent-welded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for manufacturing anti-slip protrusions provided on the back side of a shoe cleaning mat.

The progress of urban development in recent years has been remarkable, and regional development has progressed rapidly not only in each local city but also in the districts, wards, towns, and villages, and there is now a tendency for buildings to be lined up all over the place. or,
Shopping streets, which are responsible for the prosperity of local communities, are gradually modernizing, and for this reason, this type of shoe-wiping mat related to the present invention is also useful for the environmental hygiene of local communities, and for each floor to prevent dirt and other dirt from being brought indoors. In addition to this, from the perspective of aesthetic maintenance.

Furthermore, with the entry of specialized businesses, demand is rapidly increasing year by year, and they are being installed not only at the entrances of each building, but also at the entrances of each floor. On the other hand, they are now being used not only at the entrances of shops and restaurants, but also at the entrances of ordinary households, and are even installed on most of the front and rear floors of automobiles. I am in a situation where I am

However, even in this day and age, shoe cleaning mats of this type tend to be useless because they easily shift from the position they were placed on, or become useless because they shift or roll up. Phenomena such as feeling pleasure or feeling annoyance are common knowledge.

Particularly noticeable is the collapse of interior mats placed in passenger cars. For this reason, it has been considered to provide an anti-slip mechanism on the back side of the mat, and various improvements have been researched by those skilled in the art.

Normally, when manufacturing this type of mat, a pre-cut carpet is placed under pressure on the surface of plastisol poured into a casting mold, and the base fabric surface of the carpet is slightly submerged into the sol. The sol is transferred to a high-temperature furnace, and the sol constituting the mat is solidified by heat treatment.

However, in the process of forming a large number of protrusions on the back side of the mat, the plastisol that forms the important mat does not enter smoothly into the many holes that become the drilled protrusions due to the air pressure remaining in the holes, and vibrations occur. Even during operation, the plastisol only slightly sank, resulting in an extremely difficult work process that could only create triangular protrusions with little utility.

The present invention has focused on the above-mentioned reasons, and as a means to eliminate such mat collapse, the present invention has been made as a result of research through repeated various searches in order to provide a shoe cleaning mat with a large number of anti-slip protrusions on the back surface. The purpose of this invention is to develop and provide a highly accurate manufacturing method for anti-slip protrusions.

An embodiment of the method of manufacturing the anti-slip protrusion of the present invention that achieves the above object will be described below with reference to the drawings.

FIG. 1 is a perspective view of the appearance of the mat of the present invention, and FIG. 2 is a schematic diagram showing the main parts by partially cutting away the mold of the present invention. FIG. 3 is a partial sectional view showing an enlarged main part of the mat of the present invention, and FIG. 4 is a schematic explanatory view showing the manufacturing process of a long mat according to the next embodiment.

The structure of the present invention is that in the process of forming a shoe cleaning mat with a flocked carpet 6 welded and fixed on the front side by a plastisol heat treatment method (not shown), a large number of anti-slip mats are provided on the back side of the mat 4. A large number of receiving holes 3 for the projections 5, which can be integrally formed, are bored in the bottom part 2 of the mold 1 for the purpose of thermoplastic manufacturing by the casting method, and plastisol (not shown) is formed. At the beginning of the pouring manufacturing process, the plastisol forming the mat body 4 is mixed with a plasticizer A, which is a mixture of DOP (dioctyl phthalate), paraffin type, or mineral oil type diluent, etc. in an approximately 50/50 ratio. The sol solvent was sprayed onto the hole 3 and its surroundings using the Honji technique, which was used as a means to ensure compatibility between the sol solvent and the receiving hole 3. By using this technique, plastisol was formed on the bottom part 2 of the mold. The gist of the present invention is that the compatible plasticizer can be smoothly filled into the receiving hole 3 and the anti-slip protrusion 5 can be integrally formed on the back side of the mat 4 to which the carpet 6 is welded. This method is characterized by incorporating the spraying technique into the initial process. Further, the present invention further provides that in the long shoe cleaning mat 4 that is continuously formed by a belt conveyor, holes similar to those of the mold having the above structure are bored in the bottom part of the wide belt 1' having the shape of a mold. Conveyor belt A
It is also characterized in that a spraying device B for the plasticizer A is incorporated into the receiving hole at the initial stage of movement.

By configuring the manufacturing method of the anti-slip protrusion 3 of the present invention as described above, it is possible to make a very difficult process for the pores drilled in such a mold, which conventionally could not be achieved even by vibration of a vibrator. We have succeeded in establishing a technique that allows plastisol filling to be carried out reliably and smoothly.

That is, in the process of pouring plastisol into a large number of holes 3 provided in the bottom part 2 of a casting mold, the sol and a diluent such as DOP, paraffin, or mineral oil are mixed in an approximately 50/50 ratio. By spraying the plasticizer A into the receiving hole 3 during the initial movement process, it exhibits compatibility and fuses without being hindered by the air remaining in the receiving hole, and has a 100% probability of forming a wide surface. We succeeded in forming a large number of protrusions 5 on the bottom surface of the mat, which are the key to preventing slipping.

As described above, the technique of the present invention can be applied to complex molds such as casting methods or injection molding methods, which are usually extremely difficult, by spraying a plasticizer mixed with plastisol of the same solubility. , it is instantly compatible with the poured plastisol, inevitably fused with each other, and can be easily filled, and its reliability is beneficial and will make an extremely important contribution in the current situation of rapidly increasing popularity as described above. It is capable of producing highly significant effects.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of the appearance of the mat of the present invention, and FIG. FIG. 3 is a partial sectional view showing an enlarged main part of the mat of the present invention, and FIG. 4 is a schematic explanatory view showing the manufacturing process of a long mat according to the next embodiment. I...Plasticizer. l... Mold, 2... Bottom of the mold, 3... Receiving hole, 4... Mat, 5... Anti-slip protrusion, 6... Front carpet surface of the mat. A...Belt conveyor. B...Plasticizer spraying device. C...Sol pouring container. D...High temperature furnace.

Claims (1)

[Scope of Claims] 1. In the process of forming a shoe-wiping mat with a flocked carpet welded and fixed to the surface using a heat treatment method using a vinyl chloride solvent such as plastisol, a large number of anti-slip protrusions are integrally formed on the back side of the mat. A large number of receiving holes for protrusions are formed on the bottom side of the mold manufactured by the casting method, and at the beginning of manufacturing when the sol is poured, plastisol and a plasticizer mixed with the plastisol, such as DOP, are formed. Alternatively, a plasticizer mixed with a paraffinic diluent in an approximately 50-50 ratio can be sprayed onto the receiving hole and its surroundings to ensure compatibility between the receiving hole and the plastisol, and the plastisol can be smoothly transferred to the receiving hole. A method for producing anti-slip protrusions in a shoe-wiping mat, characterized in that the anti-slip protrusions can be integrally formed on the back surface of the mat by filling the mat with anti-slip protrusions. 2. In a long shoe-wiping mat that is continuously formed by a belt conveyor, a mold-shaped conveyor belt is formed in the bottom surface of which holes similar to those of the mold having the above structure are bored throughout the wide belt; 2. A method of manufacturing a non-slip protrusion in a shoe cleaning mat according to claim 1, further comprising incorporating an injection device for spraying the plasticizer into the receiving hole at the beginning of movement.