Measure leather sandals standard that products carry out Q B / T 2307-97 " leather sandals ". Sign to the leather sandals of standard, appearance , help thickness of bringing , strip intensity , is it roll over performance , wear-resisting performance , other bottom thickness , heel hardness , is it take intensity of pulling out , collude heart bending rigidity index carry on the regulation to help to able to bear.
Sign

　　Mark names or the size of shoes of trade mark of factory on each pair of shoes; Pack (the shoe-box ) and have obvious name and address of factory of manufacture , trade mark , zipcode inside; Pack inside (the shoe-box ) and have name of product (must indicate the material of upper of a shoe : Natural leather , imitating the cover material artificially ,etc.). The natural leather should indicate the leather that such natural materials as the ox , pig , sheep ,etc. made into.

　　While the leather is processed thicker animal skin (such as ox , pig ) needs to cut open into several layers through cutting open one floor of machines , in order to obtain leather with suitable thickness. Under the first layer calls two storeys or three floors.

　　The synthetic leather was made of bottom base by spinning cloth , polyurethane ,etc.. The synthetic leather regards fabric as the bottom base and scribbles and replies the industrial chemicals and makes.

　　It pack inside (shoe-box) have not it is available by symbol , size of shoes (make for unit , foot is the long to be for basic China size of shoes with mm. ) , grade , colors of shoesing,

Appearance quality

　　Help to take (one): Should be unanimous basically with the color and luster , thickness , pattern , fine hair thickness of the same position of a pair of shoes. Is it have slight defect , is it is it split the thick liquid , split in the surface to have to allow to allow. Digging the eyes want it completely, it digs and allows one place to leak.

　　Split open and help: Good , flat clothes. Unanimous basically with the same position of a pair of shoes. Helping to take can't shrink and deform . Dig the eyes , knit and does not deform . Too bad to exceed 2.5 m m each other with the same position of a pair of shoes.

　　Mainly follow interior Baotou: The hardness is proper, it is out of shape that can't shrink .

Heel: It is firm , right and symmetrical to assemble. The size , height , color and luster are unanimous.

　　Glue and shut: Have not held the glue, lacked the glue phenomenon.

　　Gou Xin: Gou Xin is straight. Getting soft, constantly, become flexible , exceed with mouth 8 m m collude hearts highly.

　　Inside and outside the shoes: Neat and decolouring in the smoothness , shoes.

　　Roll over the border mouth: Neat , even basically, mustn't split in the side.

The fittings: Assemble firmly basically and symmetrically.

　　Suture of upper of a shoe: The circuit is neat, the needle yard is even , the line elasticity of bottom surface is unanimous basically, mustn't jump the line , jump the line , heavy needle and allow a stitch in secondary position in main obvious position, each of shoes can't exceed two places . Do not allow to break while washing.

　　Other bottom: The same position color and luster , pattern , thickness of bottom are unanimous basically with a pair of shoes. It has a slight defect that the cover is allowed at other bottom.

Strip the intensity

　　It examines the adhesive and manufacturing enterprise and glues the measuring index that shut the processing technology to strip the intensity, the ones that reflect and help with the bottom glue the fastness of shutting directly. Strip the man shoes ¡Ý 70 N of intensity / c m , ¡Ý 50 N of women's shoes / c m. ?

Able to bear the performance of turning back

　　Imitate the state that people walk normally and crook the test of scratching on the specific testing machine. Crooking scratching the mouth that the position cut 5.0 m m in advance in the shoes, then convert it into 4 ten thousand times, measure its length of breach at first, able to bear rolling over ¡Ü 30 m m of performance index (the length of breach ).

Wear-resisting performance

　　It is under the regular hour and load, adopt the normal test to rub the wheel to carry on the test , measure and rub the length of mark. Wear-resisting performance index ¡Ü 14 m m.

Cancel the bending rigidity of heart

　　Set up mathematics model with the principle of cantilever beam , with collude heart rigidity test appearance is it is it collude bending rigidity of heart to measure to come , index its highly different and different according to heel. Follow high> 50 m m, bending rigidity ¡Ý 700 k n. m m 2 ; High 30-50 m m , bending rigidity ¡Ý 500 k n follow. M m 2, it is high to follow <30 m m, bending rigidity ¡Ý 340 k n. m m 2 .

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