Men's Nylon Backpack Laptop Bag Multifunctional Simple Double Zipper Power USB Charging

Item No.: 1908
Dimension: 31x44x19cm
Color: Black,Grey,
Material: Nylon
Weight : 1KG
Waistline: 30-50cm
Shape: Rectangle
Design: Backpack
Texture: Mesh
Design: Handbag, Shoulders Bag, School Bag, Travel Bag,
Style: Backpack
Abrasion resistance: Strong
Brand: Contacts Family
Special function: Traveling, Hiking, Shopping, Riding,
Technical specification: Durable and Waterproof coating

Feature:
1. High mechanical strength, good toughness, high tensile and compressive strength. The specific tensile strength is higher than metal, the specific compressive strength is comparable to metal, but it is not as rigid as metal. The tensile strength is close to the yield strength, more than twice as high as ABS. Strong absorption capacity of impact, stress and vibration, impact strength is much higher than the general plastic, and better than acetal resin.
2, outstanding fatigue resistance, parts after repeated bending can still maintain the original mechanical strength. PA is often used for common escalator handrails and new plastic bicycle rimes where the periodic fatigue effect is very obvious.
3, high softening point, heat resistance (such as nylon 46, high crystallization of nylon thermal deformation temperature is high, can be used at 150 degrees for a long time. After glass fiber reinforcement, the thermal deformation temperature of PA66 reaches more than 250 degrees.
4, smooth surface, small friction coefficient, wear-resistant. As a moving mechanical component has self-lubrication, low noise, in the friction effect is not too high without lubricant use; If you really need to use lubricants to reduce friction or help heat dissipation, then water, oil, grease and so on can be selected. As a result, it has a long service life as a transmission component.
5, corrosion resistance, very alkali and most salts, also resistant to weak acid, oil, gasoline, aromatic compounds and general solvents, aromatic compounds are inert, but not resistant to strong acids and oxidants. It can resist the corrosion of gasoline, oil, fat, alcohol, alkaline and so on, and has good anti-aging ability. Can be used as lubricating oil, fuel and other packaging materials.