In our country, rainy weather is quite common, and therefore the production of EVA shoes is an excellent solution for representatives of working professions who need to fulfill their duties regardless of weather conditions.
Of course, you can buy high-quality leather shoes, but even it will deteriorate quickly from frequent wear in bad weather, and its cost is quite high.
EVA shoes - what is it
Special-purpose rubber shoes were invented back in 1920, but they have retained their relevance to this day. Such shoes are considered the most suitable option for walking or working in rainy weather.
It is for this reason that EVA shoe production is growing and developing every year. It is worth paying attention to the fact that rubber shoes do not stretch, so when buying, you should take into account its peculiarity and choose a size larger. Special care for work shoes made of rubber is not required, just wipe it with a cloth soaked in water with glycerin.
Polyvinyl chloride in shoe production
Today it makes sense to start the production of PVC shoes. Polyvinyl chloride is a special type of plastic that is actively used in shoe production. Special shoes are also made of PVC, which by their characteristics is more durable than rubber, and it turns out to be almost monolithic. It takes only one seam to connect the sole to the boot. In addition, PVC shoes can be decorated with any patterns and patterns.
Benefits of EVA Shoes
Nevertheless, the production of EVA shoes is more in demand today, since EVA is an environmentally friendly composite polymer material, which has a number of important advantages. EVA shoes are made much easier than the analogue of PVC, it does not cause allergies, is not prone to the accumulation of fungi and bacteria, does not emit an unpleasant odor. Another plus of such special shoes is its frost resistance. This material retains its elasticity even at the lowest temperatures.
Methods of making EVA shoes
As a rule, two methods are used for the manufacture of shoes from foam molded material (EVA): line-cast and cast. The latter method is suitable for those who want to start a small production of EVA shoes with minimal starting costs and using simple manufacturing techniques. Various types of shoes - from boots to galoshes and slippers - are made on injection machines. This equipment, like the shoe press, can be of various configurations and have different technical characteristics.
As a rule, injection and pressing equipment is purchased in China. Such machines are characterized by high performance and relatively low price. To start a small production you will need the following equipment:
- Shoe foundry machine.
- Press for the manufacture of summer assortment.
- Cutters for the upper part of the shoe.
- Cutting presses.
- Sewing machines (for the production of PVC shoes).
Types of injection molding machines
There are several types of injection machines: for the manufacture of EVA and PVC shoes. Models of the first type include single-color and two-color machines, equipment for the manufacture of EVA soles, foaming machines. Management of these models is carried out using a graphical interface.
The display shows detailed information about the temperature of the mold and injection, material consumption, data on the output form, operating time and others.The standard dimensions of such machines vary depending on the model, but, as a rule, their length is 13 meters. Nevertheless, there are more compact cars.
If, in addition to EVA shoes, you plan to produce PVC or rubber shoes, then additional equipment is required here: a dryer-mixer, a crusher, a paint mixer and a machine for painting the soles. Such equipment is necessary in the production of bright slippers for the beach with a beautiful pattern on the soles, which are in great demand among consumers.
Production Features
Of course, the production of EVA shoes should ensure the release of quality products. Shoes must comply with GOST and have all the necessary certificates. Of course, for example, slippers are seasonal shoes, and no one expects long service from them, but special work shoes are worn every day, and they must be of the highest quality.
Shoes made by injection molding are lightweight and elegant. The injection method consists in molding the sole in a special mold. Then the sole is attached to the workpiece. The molding step is combined with the fastening process. Injection shoes are devoid of any mechanical fasteners. The sole is held due to such a property of rubber as adhesion - the ability of surfaces made of dissimilar materials to join as a result of the formation of mutual diffusion and chemical bonds between them.
Special EVA shoes are recommended for use under conditions of increased exposure to moisture or industrial pollution. Due to the absence of holes and fasteners, such shoes are best able to protect the feet of workers from any kind of pollution, as well as from chemical and other harmful substances.
