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< p > shoe making process < /p >

< p > shoe making wholesale shoe making technology, China's shoe making technology has been using manual sewing technology for a long time.

Since twentieth Century, advanced technology has been imported from abroad and < a href= "http://cailiao.sjfzxm.com/" > special equipment < /a >. Shoemaking technology has been developing rapidly. It can be roughly divided into suture technology, injection molding process, molding process, adhesion process and assembly process.

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< p > sewing process < /p >

< p > sewing technology is mainly to stitch the upper and sole by hand or machine.

It is the traditional forming method of < a href= "//www.sjfzxm.com/news/index_x.asp" > leather shoes < /a > cloth shoes.

This kind of technology has two kinds: hand sewing and machine sewing.

The traditional methods of cloth shoes are the reverse, the bright and the upright, which are the traditional methods of leather shoes.

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< p > injection molding process < /p >

< p > injection molding process has 4 ways.

1. Injection molding: injecting synthetic resin into the mold with medium injection pressure and higher barrel temperature, solidifying the sole and molding the bottom simultaneously.

It's mostly used for cloth shoes.

Now, leather shoes, plastic shoes and rubber shoes are also used in this kind of craft.

2. Glue injection: the rubber is plasticized through the cylinder, and then injected into the mold with higher injection pressure. At the same time, the bottom is made and the bottom is bonded to form.

For cloth shoes, rubber shoes.

Pouring method: the A and B components of the quantitative reaction raw material (such as polyurethane, polyamide, etc.) are mixed at high speed in the mixing head and then poured into the mold cavity to make it solidified and formed under constant (high) pressure.

It is now used for producing rubber shoes and a few cloth shoes.

4. Enamel method: the plastic sol is poured into the cavity of the boot and shoe, and heated by the side, and the mould is rotated at the same time, so that a part of the plastic sol is attached to the mold cavity wall under the centrifugal force to form the green body, and the excess plastic sol fluid is poured out, and the body is further heated to make the green body mature and molded, then the shoe is placed into the shoe lining.

For rubber shoes and plastic shoes.

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< p > molding process < /p >

< p > molding process is done at the foot of the shoe that has been stretched under the last shoe (the lower part of the upper part of the shoe) is bonded to the sole and the round bar (used for rubber shoes), and the rubber blank is put into the mold for heating and pressing, and then vulcanized.

It is mainly used for rubber shoes, leather shoes and cloth shoes.

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< p > bonding process < /p >

< p > bonding process has 3 ways: (1) thermal vulcanization: all parts of the shoe are sent to the vulcanizing tank after being pasted, heated indirectly by steam or heated directly by air and steam, while the rubber parts are vulcanized, so that the bottom of the rubber can be bonded to form.

Among them, the outer bottom, bottom heel and other parts are pre molded and then pasted into other parts and sent to the vulcanizing tank for heating and vulcanizing. The two vulcanization is the traditional process of rubber shoes production.

Some cloth shoes are also being used.

Cold adhesive method: upper and sole soles are glued and molded at room temperature.

It is mainly used for leather shoes, cloth shoes and rubber shoes.

3. Sticky stitching: after the upper and sole are sticky, the edges of the soles are stitched to enhance the fastness between the bottom and the sides.

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< p > assembly process < /p >

< p > assembly process assembles molded parts, molded or punched shoes into shoes.

It is mostly used in plastic slippers and rubber slippers.

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< p > < a href= "//www.sjfzxm.com > > footwear > /a > minor knowledge" /p ".

< p > 1, appearance elements -----A and double, including chromatic aberration, long hair, short, single foot, toe size, heel height and so on; B, cleanliness, including silver pen line, glue pollution, vehicle oil, rust, dust, thread, finished product color change, fading and so on.

C, skew, including all parts of shoe upper (toe, back, tongue, ornament, joint, etc.), and the skew of the shoes, the bottom and the bottom.

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< p > 2, functional requirements ----A: can not be worn out, including the mistakes in the printing plate, and the possible mistakes and random codes of the last.

B, the glue is not strong enough to reach the minimum standard required by the customer or can be easily pulled out by hand. Whether C, inland or port Zou may cause scratching will occur.

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< p > 3, packaging -- in fact, packing is the most important.

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< p > A: the outer box, especially the outer box, includes the size, content and location of the printed font, and the other is the size of the outer box, including the size, material, gross weight and net weight.

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< p > B: inner box, including size, color, various labeling and printing, whether it is wrong shape, wrong code, wrong color inner box, whether desiccant is needed and whether it needs to be double or not.

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< p > C: shorts, every inspection, depends on whether there is a full box, at the same time to draw out boxes to avoid cheating in factories < /p >

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