JPS5937963B2 - How to make oil-resistant shoes - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method of molding an oil-resistant slash shoe having an oil-resistant outer sole layer.

Today, the rubber shoes worn at fish stores, gas stations, and various food factories where oils and fats are handled, as well as at workplaces, change their rubber quality and harden or crack in a relatively short period of time (about a month). becomes unusable.

Oil-resistant shoes have been proposed to prevent this, but
If the entire shoe is molded from the same material, the fluidity of the material plastisol is poor and the discharge process takes time, it is also difficult to obtain a thick sole, and a large amount of expensive polymerized polyester plasticizer is required. Therefore, there is a problem that the entire shoe becomes expensive.

The present invention aims to solve the above problems,
An example of implementing the present invention will be described below based on the accompanying drawings.

In Figure 1, 1 is a shoe mold, which is heated to about 100°C and then injected with a certain amount of plastisol A containing a large amount of oil-resistant polymeric polyester plasticizer that will initially form the shoe sole. , 1° to 80° C. to 200° C. for about one minute to semi-gel.

Next, as shown in Fig. 2, the outer layer plastisol B forming the shoe body is injected and filled into the mold 1 from above and heated at 180°C to 200°C for 1 to 2 minutes to form the desired shape into the mold. When a thickness of 100° C. has been deposited, the partially gelled plastisol is discharged, and the gelation is completed by heating at 180° C. to 250° C. for about 10 minutes to 30 minutes.

Then, the solidified material is removed from the mold by forced or natural cooling.

FIG. 3 is a longitudinal cross-sectional view of the product manufactured in this way,
2 is an oil-resistant bottom, and 3 is an outer layer.

Plastisol A forming the sole used in the present invention is
It is as follows.

On the other hand, the outer layer plastisol B forming the shoe body is as follows.

Pigment 1 to 5 parts The method of the present invention is carried out as described above to form an oil-resistant sole only in a portion of the shoe sole, and it is possible to manufacture durable and long-lasting oil-resistant shoes at low cost and easily.

According to the inventor's experiments, the thickness t of the oil-resistant sole was 3.
mm to 6 mm (3 mB at the bottom of the engraving, 6 mm at the top of the engraving), to improve its durability several times (can be used for 5 to 6 months) compared to conventional products of the same dimensions and under the same usage conditions. It was created by

[Brief explanation of the drawing]

FIGS. 1 and 2 show the manufacturing state according to the method of the present invention, and FIG. 3 is a longitudinal sectional view of the manufactured product. 1...Shoe mold, 2...Oil-resistant sole, 3.
...Outer layer.

Claims (1)

[Claims] 1 Initially, a certain amount of plastisol A mixed with a large amount (50 to 100 parts) of an oil-resistant polymeric polyester plasticizer for the shoe sole was injected into a shoe mold, and it was semi-gelled under heating conditions so that the tread area became 3 mm. An oil-resistant bottom with a wall thickness of ~6 dragons is formed, then outer layer plastisol B is injected and filled from above, heated until the desired thickness is deposited, and the ungelled plastisol is discharged and the gel is formed. A method for manufacturing oil-resistant shoes, which is characterized by completing the chemical conversion process, and then cooling and taking out the shoes.