Manufacture method for one-step foam molding of three-density sole

Abstract

The invention discloses a manufacture method for one-step foam molding of a three-density sole. The manufacture method mainly comprises the following steps of 1, orderly overlapping a high-elasticity EVA sheet layer, an EVA bridge sheet layer and a rubber foamed sheet layer from top to bottom to obtain a three-density foamed sheet layer, 2, putting the three-density foamed sheet layer into a metal mold pre-heated to a temperature of 140 to 150 DEG C, and carrying out hot-pressing molding by a steam oil hydraulic press at a temperature of 150 to 165 DEG C under the pressure of 150 tons for 8 to 16 minutes, 3, taking out the three-density foamed sheet layer subjected to oil hydraulic molding from the metal mold, cutting off rim charge, keeping flat, and carrying out compulsory blowing by a fan for cooling, and 4, naturally cooling the cooled three-density foamed sheet layer for 36 to 48 hours to obtain a three-density sole. The manufacture method avoids manual gluing of a sole, effectively reduces a labor cost, reduces energy consumption, is safe and environmentally friendly, greatly improves production efficiency and a product yield, and obviously improves economic benefits of enterprises.

Description

technical field [0001] The invention relates to the field of shoemaking, and more specifically, relates to a manufacturing method for one-time foaming molding of a three-density shoe outsole which is composed of three different formulations and can be foamed at one time. technical background [0002] In order to improve the performance of the sole, many merchants currently make the sole into three hardness forms. The three hardness soles can make the upper layer soft and comfortable, and at the same time ensure that the lower layer is wear-resistant, non-slip, and strong in toughness. However, the traditional manufacturing of three hardness When the sole of the shoe is made, the outsole of the shoe is bonded and bonded by manual use of glue. This method has the following disadvantages: 1. There are many processing procedures for using glue to bond the outsole of the shoe, including: surface treatment, gluing, drying, and pressurization. etc., the process is cumbersome and co...

AI Technical Summary

Problems solved by technology

[0002] In order to improve the performance of the sole, many merchants currently make the sole into three hardness forms. The three hardness soles can make the upper layer soft and comfortable, and at the same time ensure that the lower layer is wear-resistant, non-slip, and strong in toughness. However, the traditional manufacturing of three hardness When the sole of the shoe is made, the outsole of the shoe is bonded and bonded by manual use of glue. This method has the following disadvantages: 1. There are many processing procedures for using glue to bond the outsole of the shoe, including: surface treatment, gluing, drying, and pressurization. etc., the process is cumbersome and complicated, and the production efficiency is low; 2. Since the outsole of the shoe is bonded with glue, the bonding effect is poor, and it will be affected by sunlight, temperature and rain, and the outsole of the shoe is easy to degumming, which seriously 3. Since the outsole of the shoe is bonded manually with glue, the manufacturer must increase the production line for manually bonding the outsole of the shoe, which will inevitably lead to an increase in labor costs and glue raw material costs And the cost of equipment, and will greatly reduce the production efficiency and product qualification rate, making the production cost high and the economic benefit of the enterprise low; 4. Because the glue is toxic and volatile, it is very easy to pollute the environment and affect the health of workers, etc. The problem, in addition, a drying process is required during the production process, which makes the working environment extremely easy to cause fires, so this kind of shoe outsole production process is neither environmentally friendly nor safe