yesilm
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it is necessary to protect the performance test
« on: Sep 24th, 2015, 1:37am » |
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Safety shoes (safety shoes) the quality of identification:
1. Identification upper material: Now the Chinese market safety shoes uppers material common: turn suede leather, leather shift membrane, crushed leather, leather, etc., in recent years, and the European Union CE standards for synchronization, Nike Air Max 1 Homme domestic manufacturers have also started importing abroad in line with European standards of thick buffalo leather. Since the shift film leather material and leather look very similar, many Nike Air Max 90 Womens consumers can not judge, now on a comparative analysis of these two materials.
A look: leather (leather types in leather industry is that people distinguish synthetic leather and a habit called) obviously irregular surface patterns and natural pores, cold folding, breathable wicking performance; shift film leather collectively natural synthetic leather, natural leather is affixed on the lower surface of the fiber layer of loose flesh artificial surface layer grain pattern and natural leather similar, but without pores, feel hard, but good water resistance.
Second touch: feel full, and elastic feeling, no sensation of hands touching the Nike Roshe Run Femme dermis, feel hard, there is a sense of cool for most leather shift membrane. Three from the cross-sectional observation: leather sectional is no obvious film layer, hand scraping the bottom New Balance 574 Femme group will find a hair longer and more scratch more, this is the most obvious fibrous substrate (leather substrate) performance; shift film leather leather is natural leather on the lower surface of the fiber layer of loose flesh or fiber milled, high pressure with an adhesive bonding, to form a sheet and then paste the artificial surface layer, with a blade scraping the surface, some of the surface can be whole small peeling.
2, the production process: domestic safety shoes production process points: molding, injection, gluing, seams. Injection class safety shoes lightweight soles and uppers of high viscosity, usually polyurethane outsole Nike Air Max 2015 Damen material, wear-resistant, waterproof; Adhesive shoes is a long history of traditional craft production, generally the sole use of materials such as rubber shoes with glue and Upper adhesive; www.opsm.co.uk prices sewing tire-soled shoes and molding process is relatively inexpensive products are low, presented here do not.
3, safety shoes, shoe: the need to protect the toe safety shoes Baotou Steel anti-puncture safety shoes need steel plate, anti-static shoes need antistatic agents and anti-static lines, observe, it is necessary to protect the performance test, understand meets supplier certified product grades, shoe accessories quality meets the requirements.
4. Compare: Compare divided into two kinds of conventional way, a cross-sectional anatomy of shoe comparison, after the appearance of the comparison process, the safety shoes vertical surface cut, cut uppers can be clearly observed in cross-sectional, sectional materials, shoe-section, internal structure and internal processes steel toe and steel plate and shoes, is Nike Air Max 2015 Herren worth mentioning here that the density single density sole section is the same, relatively hard by hand; sectional dual density soles can be clearly observed upper and lower layers Its density is not the same, low top density, high lower density, good flexibility by hand; if the soles of two-color molding, but the density of the same cross-section, are also the kind of single density. Comfort II to try, try to compare the comfort of safety shoes, through the line, squatting, kicking, and other movements feel heavy tread of the shoe.
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