Umbrellas and rain boots are the most common in rainy days. They have different structures but the same function. They are all for rain protection.
The structure of the umbrella is generally composed of four parts: umbrella handle, umbrella rod, umbrella rib, and umbrella surface.
1. The middle rod of the umbrella is the backbone of the umbrella and supports the entire umbrella stand. It is mainly made of iron, wood, aluminum, glass fiber and other materials.
2. The rib supports the entire umbrella surface. It has several specifications and styles. The style of the umbrella is derived from the rib. It can be straight or can be folded to open, which is convenient for carry.
3. The umbrella surface is an important part of the umbrella, and it is responsible for sheltering the rain. The fabrics are generally polyester plain fabric, polyester silver-tape, impact fabric, nylon fabric, and so on.
4. The umbrella handle is the handle of the umbrella, which is generally composed of wood, plastic, aluminum, and rubber materials.
The Umbrella rib structure is mainly composed of the main rib, support rib, and hinge seat, which is characterized in that: at the hinge seat part where the main rib and the support rib are connected, a package of reset and hinge is formed at the U-shaped rib respectively.
The hinged seat is integrally formed with the main rib, and one end of the support rib is riveted and fixed. The main rib is accommodated by the encapsulation body, and several rings are injected with glue on the periphery of the main rib of the main umbrella on both sides of the hinged seat. The annular body is integrally formed with the main umbrella rib.
Many people confuse umbrellas and parasols, but in fact, the two are not only used for different purposes, but also of different materials. The former is to keep out the rain and the latter is to shade the sun, but with the progress of the times, the sun and rain umbrellas have appeared. Does that mean that the sunshade can be eliminated?
1. Different nature
1. Nature of sunny umbrellas: umbrellas used to shade light on sunny days and umbrellas used to cover rain on rainy days. It is an umbrella that can be used in both sunny and rainy days, as well as shade and rain.
2. The nature of the sunshade: It is mainly used to shield the umbrella from direct sunlight. Used in summer, it can effectively isolate the damage of ultraviolet rays to the skin.
Two, the main purpose is different
1. The main purpose of the sunny umbrella: the sun umbrella is equal to the sunshade plus the umbrella, but in general, the sunshade effect is slightly weaker, and the sunscreen effect is average. If it is rainy season, use a parasol; if it is a dry area, use a professional sun protection umbrella.
2. The main purpose of the sunshade: It is mainly used to shield the umbrella from direct sunlight. Used in summer, it can effectively isolate the damage of ultraviolet rays to the skin. Generally, the higher the UPF value, the stronger the ability to isolate ultraviolet rays; the larger the size, the larger the area under the sun umbrella.
In addition to umbrellas, rain boots are also used on rainy days. Rain boots have plastic disposable boot covers, but they are not ventilated and will cause environmental pollution.
There is also waterproof canvas, which is generally made of polyester grey cloth and wax oil. Canvas with waterproof, mildew-proof, and dust-proof functions. It has the characteristics of bright color, lightweight and softness, durability, high strength, tensile strength, sun protection, waterproof, mildew resistance, frost resistance, corrosion resistance, and so on. In the process of use, it should be avoided to cut and hit with sharp objects.
