Backpack, also known as "rucksack", is a luggage bag with one to two shoulder straps that can hang on the back of human beings. From the use of modern march load items, developed into a modern backpack. Although the structure and materials have improved, but its main structural system is still shoulder strap and luggage bag. As the human body is difficult to rely on both hands to carry heavy objects, so backpack is often used to carry or carry the weight of the preferred tool. According to different applications, outdoor activities such as walking, mountain climbing, hiking, travel and cycling, etc., or daily shopping and school, the use of backpack will be comfortable and lightweight. When the load, such as cargo transport, camping and marching, the backpack design used will be different, for example, will use a more breathable material, the inside with support frame, the weight transferred to the buttocks, or shoulder strap can be added to fill Objects to reduce the pressure on the shoulder and with a belt and so on.
With the continuous improvement of life and consumption levels, all kinds of backpack as people indispensable jewelry. We asked the luggage products not only in the practicality has been strengthened, decorative also have to expand.
According to the taste of consumers, backpack material more diversified, leather, plastic material, polyester, canvas, linen and other texture luggage to lead the fashion trend. At the same time, in the increasingly advertised period of personality, simple, retro, cartoon and other styles from different sides to meet the needs of fashion personality publicity. The style of the luggage is also from the traditional business package, school bags, travel bags to pencil cases, coins, small bags and other expansion.
China is a big country of luggage production, China has formed Guangdong Huadu, Fujian Quanzhou, Pinghu, Hebei and Hebei Baigou four PVC bag manufacturing base.
International luggage market there is a huge demand for space, directly promote the export of luggage products in China growth, making luggage exports to achieve steady growth and good momentum. In 2007, the amount of China's luggage exports reached 10.81 billion US dollars, up 24.21% over the same period, the number of exports 7.779 billion, an increase of 21.56%.
According to the different backpack volume, the general can be divided into three categories of large and small backpack
Large backpack volume of 50 liters or more, for long-distance travel and more professional adventure activities. For example, when you want to go to Tibet such areas for long-distance travel or mountaineering adventure, you should undoubtedly choose the volume of 50 liters or more large backpack. Some short-term travels also require large backpacks if you need to camp in the wild, because only it can hold the tents, sleeping bags and sleeping cushions you need for camping. Large backpack according to the use of different can be divided into mountaineering bags and long-distance travel with a backpack.
The mountaineering bag is generally slender, so that through the narrow terrain, the body is divided into two layers, the middle with a zipper sandwich separated, so that when the items are very convenient. The side and top of the backpack can be bundled with tents and mats, virtually increasing the volume of the backpack. There are ice horns outside the backpack, for bundles of ice picks, snow pole with. The most worth mentioning is the back of these backpack structure, the package has a support package of light aluminum alloy frame, the shape of the back is ergonomic design, back and wide and thick, the shape of the curve with the human physiological "S" type design, and also to prevent the strap to both sides of the sliding side of the chest, so that backpackers feel very comfortable. And this kind of backpack all have a strong, generous and comfortable belt, the height of the strap can be adjusted. Users can easily adjust the strap to their own height according to their own body. Generally speaking, the bottom of the backpack is located above the buttocks, which can be more than half of the weight of the backpack to the waist, thereby greatly reducing the burden on the shoulder, reducing the long-term weight loss caused by shoulder damage.
Long-distance travel backpack package body structure and mountaineering bag is similar, but the package body is large, and with a lot of side bags, in order to put the fragmented objects classified, long-distance travel backpack front face is usually all open, pick and place items is very convenient.
Medium backpack volume is generally between 30 to 50 liters, the use of these backpacks more extensive, 2 to 4 days of field travel, travel between cities and some long-distance non-camping self-help travel, medium-sized backpack is appropriate The. Carry the clothes and some daily necessities can be loaded under the next. Medium-sized backpack style and variety are more diverse. Some backpack adds some side pockets, more conducive to sub-items. The backpack of these backpack and large backpack roughly the same.
Small backpack in the volume of 30 liters, these backpacks are generally used in the city, of course, for 1 to 2 days of the picnic is also very appropriate.