Shandong Mengjite International Trading Co., Ltd.
Tel: +86 0536-2332263
Address: Innovation building, No.2569, Renmin Avenue, Gaomi, Shandong.
First, the technical requirements
Anti-smashing shoes (boots) is developed in China in the early 80s. 1983 promulgated the national approval (leather safety shoes) (GB4014-83). On the basis of the original standard in 1993, the former Ministry of Labor promulgated the standard "Anti-smashing shoes (boots)" (LD50-94) according to the international standards (ISO / CD8782-1993).
Anti-smashing shoes (boots) should meet the following requirements.
1. General technical requirements
(1) structure: by the steel Baotou; toe pad; leather upper; eye; lace; shoes ear; Shoulder Waist; (Bore) at the end; filling core; front palm and so on.
(2) the thickness of the outsole: direct injection, vulcanized, adhesive outsole thick (excluding tooth thickness) not less than 4mm; full rubber and all polymer boots full thickness of not less than 6mm, tooth thickness ( Pattern) not less than 3mm, other materials, the height of the boot is not less than 2.5mm, no pattern (teeth) outsole any part of the thickness of not less than 6mm.
(3) The appearance of the appearance of quality: there must be no help face disability, different color, and heavy wire, jumper, broken line, needle uneven, open plastic, over sulfur, sulfur, sulfur spray, .
2. Safety performance
(1) pressure resistance: the toe from within the Baotou 25mm (3mm Department, even Gangbang cut under the indication error is (1% of the pressure testing machine platform in the toe into the high 35mm, A diameter of 22 mm plastic cylinder and then 5 mm / min (2mm / min speed force to the required force for 1min, and then restore the force to zero.Removed compressed plasticine caliper height, The value measured in the lowest position shall be the actual value, and the value shall comply with the regulations.
(2) Impact resistance: Place the toe cap and cylindrical plasticine with the inside of the head under the impact machine, fix the inspected toe head, raise the impact hammer (23kg (0.2kg)) to the required height and then freely fall Impact toe. Remove the plasticine measured with a caliper, the value should be consistent with the provisions.
(3) Pressure resistance and impact resistance requirements of the inner header: the test method is the same as that of the toe cap, but the deformation distance of the inner header shall not be less than 22mm after the test.
(4) Baotou corrosion resistance requirements: due to foot sweat and moisture and other reasons can be corrosive Baotou, and affect the quality of shoes. Therefore, Baotou should have corrosion resistance. The requirement is to use two white filter papers (100 m wide and 150 mm long) with one end immersed in 1% NaCl solution and the other end placed above and below the inner tip. After 48h remove the filter paper, check the Baotou NaCl corrosion marks, measure the area of each spot (mm2). Require corrosion spots shall not exceed 5 points, and each spot shall not be greater than 2.5mm2.
Second, product classification
1. According to fabric material:
(1) glossy anti-smashing shoes (boots);
(2) cashmere anti-smashing shoes (boots);
(3) pig suede anti-smashing shoes (boots);
(4) pigmented anti-smashing shoes (boots);
(5) white canvas anti-smashing shoes (boots).
(6) anti-smashing rubber surface safety boots
According to the craft:
(1) Note pressure shoes;
(2) adhesive shoes;
(3) Molded vulcanized shoes;
(4) seam shoes
(5) composite process adhesive seam shoes.
The current process of suitable safety shoes to injection pressure, molded, adhesive-based, and a single seam less.
Third, the type size
Anti-smashing shoes (boots) have low help, high waist, half-cylinder and high cylinder four styles. According to the toe pressure and impact resistance size is divided into An1. An2. An3. An4. And An5 and other five. There are three types of shoes, three and a half three and four three, specifications are 22 ~ 28 1/2 and other varieties.
Fourth, shoe scale production characteristics
The inner head (from the tip to the back end of the header and the horizontal distance of 40 ~ 60mm, height of 35mm, curling greater than 3mm) between the shoes and shoes, and in the end of the head pad with sponge strips, Both to make Baotou and vamp smooth and can increase the folding endurance and comfort. In the back of the mouth with sponge roller to protect the ankle, comfortable to wear.
Fifth, anti-smashing shoes (boots) quality inspection
Anti-smashing shoes is the implementation of national production license products.
1, the principle of comprehensive judgment: outsoles folding, wear resistance, shoe peel strength, shoe compression and impact resistance must be qualified, the other allows the number of unqualified shall not exceed 2, otherwise judged unqualified.
2, the sample test: five samples within the header inspection, test the appearance of quality, corrosion resistance (metal only header), compression and impact resistance and other items. Which compression and impact resistance must meet the requirements, other items allow no more than one non-conforming items, or non-conforming products.