After the pre-formation, the back, the main and the lining are glued into one, and basically reach the shape of the back of the shoe last. After the pre-formed treatment, the main heel is affixed between the back and the lining, and the inner and outer surfaces are free from wrinkles, solid and flexible. After the pre-formation, not only for its preparation in the shoe last made a good process preparation, but also because the shape of the back and the back of the shoe last basically the same shape, play a role in the shoe last position, can reduce the time before the Adjusting the time will help ensure the quality of the stretcher.
Depending on the type of shoe structure, the shape of the back pre-form is also different. At present, most of the domestic companies use pre-forms that will help the foot to fold inwards. Its feature is to determine the height of the back support, which is not only conducive to the positioning of the back of the front, but also to facilitate the back of the back. There are also some posterior pre-forms that do not fold the edges of the legs, but instead fold them when they are stretched back to help make the posterior pre-shaping easier. The above two kinds of backbone pre-forms can meet the process requirements, and apply to adhesive shoes, molded shoes and Other processes.
After the pre-formation, also known as La Gang, is one of the essential arts and crafts before the machine stretches. Since the backbone has been basically formed, before the front of the brace, the shoe upper can easily conform to the back shape of the shoe last when the shoe upper is put into the shoe last, and the front helper is naturally in the correct position. If there is no backbone preforming treatment on the upper, then the shape of the backbend is very irregular, and the stiffer main heel is suspended and not positioned between the backbone and the lining, making the back of the shoestring impossible. With the help of the back, the upper can't be positioned on the shoe last, and it's very difficult to carry out the stretching. Practice has proved that all those who have not carried out the pre-formed uppers have neither high efficiency nor high quality when stretching them. Moreover, the phenomenon of stretching the uppers often occurs. From this, it can be seen that the backbone preforming is one of the important process procedures before the stretchbite is formed. Without the quality of the backbone preforming, there is no quality of the stretchbite forming. · The old shoes at home are like this to transform big spikes · Old shoes don't stupidly throw away so that the shoes "open" Put a physical insurance on your shoes · How to clean the matte surface of the shoes? · Breathable, antibacterial, deodorizing socks with it to avoid off shoes ·Sports shoes's little tail actually has these 3 functions you certainly don't ·High-heeled shoes audio sound? 4 coups to ease you learn a few ·How to choose shoes during pregnancy? Flat shoes are not safe What should I do if my shoes become moldy ·Wearing these shoes in the summer will hurt you
Depending on the type of shoe structure, the shape of the back pre-form is also different. At present, most of the domestic companies use pre-forms that will help the foot to fold inwards. Its feature is to determine the height of the back support, which is not only conducive to the positioning of the back of the front, but also to facilitate the back of the back. There are also some posterior pre-forms that do not fold the edges of the legs, but instead fold them when they are stretched back to help make the posterior pre-shaping easier. The above two kinds of backbone pre-forms can meet the process requirements, and apply to adhesive shoes, molded shoes and Other processes.
After the pre-formation, also known as La Gang, is one of the essential arts and crafts before the machine stretches. Since the backbone has been basically formed, before the front of the brace, the shoe upper can easily conform to the back shape of the shoe last when the shoe upper is put into the shoe last, and the front helper is naturally in the correct position. If there is no backbone preforming treatment on the upper, then the shape of the backbend is very irregular, and the stiffer main heel is suspended and not positioned between the backbone and the lining, making the back of the shoestring impossible. With the help of the back, the upper can't be positioned on the shoe last, and it's very difficult to carry out the stretching. Practice has proved that all those who have not carried out the pre-formed uppers have neither high efficiency nor high quality when stretching them. Moreover, the phenomenon of stretching the uppers often occurs. From this, it can be seen that the backbone preforming is one of the important process procedures before the stretchbite is formed. Without the quality of the backbone preforming, there is no quality of the stretchbite forming.
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