Quality Control And Testing Methods For Shoes Manufactured By Shoe Factories

1. the quality of shoe material includes the two parts of shoe upper and shoe. The authenticity of leather should be distinguished.

Leather is real leather and pores. When the eyes are hard to see clearly, thumb can be pressed on the leather surface to see if there is a fine leather pattern beside the thumb.

It has fine texture, disappearance of fine lines after releasing hands, good elasticity of leather shoes, and better natural leather.

If there is no fine grain, most of them are not natural leather, including two layers of shaving film leather.

Another notable feature of leather is the defective surface.

Generally, the natural leather upper is slightly defective in the inside of the shoe and in other inconspicuous places, such as uneven skin width, bright furuncle, tick boil and so on.

There are three layers of cross section of natural leather, which are dense and different. The epidermis is very fine and flexible, and there are dense dermis in the middle. The following is a loose meat surface fiber layer, and there is no obvious demarcation between layers.

Leather shoes are used as reinforcing materials to prevent extended deformation and improve foot touch.

It is required that the shoe lining material has fine touch, breathability, excellent moisture absorption and moisture retention, and no color loss.

The middle and upper leather shoes are made of natural leather and cotton cloth.

If the vamp is natural leather, the shoe lining is the artificial substitute leather. It can only be regarded as the middle and low grade shoes.

Most consumers ignore the shoes

It is wrong to choose and identify.

2. check the upper and the bottom seam to identify the quality of the processing.

See if there is a broken line and whether the upper stitch is neat and regular.

In particular, the bonding part of the adhesive shoe leather bottom should be glued and smoothed without any gap, and there is no indication of virtual sewing and glue opening.

3. touch the inner cavity of your shoes with your hands to see if there is any bump in the inside and bottom of the shoes.

Wherever you can touch your feet, you can't be bumpy or your feet will blister.

The shoe must be provided with an insole, which is designed to keep the shoes clean, covering the rugged nails at the bottom and improving the touch of the feet.

4. use hand to pinch the heel of the upper to see if it is stiff and elastic.

It is not necessary to have a groove mark on the rear part of the rigid part, and the elasticity below the ankle is not good enough to damage the ankle.

5. press the bottom of the waist to see if it is hard.

The bottom of the shoe is the trunk and skeleton of the shoe, and press hard as the bottom of the shoe.

If the skeleton and trunk are not stiff, the shoes must be deformed and damaged.

6., put your shoes on the table or glass panel at random, to see if the shoes are stable.

When shoes are placed on the table, the left and right sides should be suspended immediately.

7. use the middle finger tip under the front toe sole to see if the height is suitable.

When the head of the shoe tip is exactly enough for the middle finger to indicate the belly thickness, it indicates that the front toe of the shoe tip is suitable.

When the front toe of the shoe tip is too large, the stability is reduced; the shoe toe is worn quickly before the foot is lifted, the shoe is easily deformed, and the foot is easy to fatigue.

8. hold your shoes with your hands to see if the soles and heels are touching smoothly.

Light the sole and heel lightly against the side of the table (or counter), so that the side of the shoe is upturned to view the contact area of the sole.

It is better to contact the side of the table with the sole (the widest part of the sole) and the whole heel plane.

Otherwise, shoes will be easy to deform and drop heels.

9. put the shoes on the table and check whether they are right from two directions.

From the front of the shoe, look at the size of the inside and outside edges of the sole from the top of the table.

From the heel of the shoe, check whether the heel is vertical or not, so that it does not tilt to the inside or outside.

10. use your index finger to stand on the outside side of the shallow shoes to view the upper ankle height.

The tip of the index finger comes down to the bottom of the shoe, so that the index finger is closer to the upper part of the outer ankle, and the second finger knuckle line of the index finger is highly consistent with the upper arm of the outer ankle.

General life shoes, social etiquette shoes, fashion shoes, slightly lower than the index finger second finger knuckle line is good; low waist sports shoes and casual shoes are soft mouth structure, the external ankle height can slightly higher than the index finger second finger joint line.

11. look down from upper to lower, look at the symmetry of the shoe parts and the deformation of the shoe outline.

Taking the straight line between the tip of the shoe and the middle point of the heel as the symmetrical axis, see whether the components on the vamp are symmetrical or not.

The shoe outline should be folded in the shoe, smooth and round, and the twisted leaf should be twisted into inferior shoes.

12. understand the shoe's outsole performance and choose the suitable outsole.

There are a variety of outsole of shoes. According to the main raw materials, they can be divided into rubber base, imitation leather base and plastic bottom. Their properties are: Rubber soles are soft, elastic, skid resistant, wear resistant, heat-resistant and cold resistant.

It's just a little heavier.

Imitation leather sole, light, stiff, wearable and resistant to twists and turns.

But the elasticity is poor and not too slippery.

Plastic sole has good abrasion resistance and elasticity.

But the texture is hard, and the heat resistance and cold resistance are poor.