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Oval-shaped tie rod in the bag is relatively common, mainly elliptical rod compared to other shaped rod is relatively provincial material, and the elliptical rod itself is a good straight line, and its own also has a high finish, the relative comparison Good stretch, easy to use.
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The D-tube tube compared to the oval-shaped tube, although it is more consumption of materials, but the D-tube has a better finish and linear, easy expansion and contraction at the same time, D-tube also has a relatively good stability , When the force in the luggage trolley, the relative pressure to bear even greater.
Luggage is our daily use is very extensive, is also very much one of the many tools, and making luggage, the choice of material is also very much, such as cloth canvas, Oxford, nylon, polyester, leather with leather, synthetic Leather, etc., plastic PP, PC, EVA, etc., then the production of plastic waterproof luggage, is the choice of PP material or PC material is good?
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Making luggage, PP material or PC material is good
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First, PP polypropylene resin
PP polypropylene plastic material of plastic bags, which itself is a translucent and add copolymer plastic material, itself and most of the plastic material luggage, has a strong waterproof, and PP material of the luggage also has anti- Acid and alkali corrosion and pressure resistance, generally relatively harsh environment, there will not be broken due to pressure problems.
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Oval in the luggage tube
