Kraft paper bags are non-toxic, tasteless, non-polluting, in line with national environmental standards, with high strength, high environmental protection, is currently one of the most popular international environmentally friendly packaging materials. Kraft paper bags made of kraft paper is more and more widely used, in supermarkets, shopping malls, shoe stores, clothing stores and other places to shop, there will generally be kraft paper bags supply, convenient for customers to carry the purchased items. Kraft paper bags are a kind of environmentally friendly bags, its variety.
Kraft paper bags are a composite material production or pure kraft paper production packaging containers, non-toxic, tasteless, non-polluting, low-carbon and environmentally friendly, in line with national environmental standards, with high strength, high environmental protection, is currently one of the most popular international environmentally friendly packaging materials.
Kraft paper bags are all wood pulp paper as the substrate, the color is divided into white kraft paper and yellow kraft paper, can be used in the paper on the PP material dripping a layer of film, to play a waterproof role, the strength of the bag can be made according to the customer’s requirements of the one to six layers, printing and bag-making integration. The opening and sealing methods are divided into heat sealing, paper sealing and gluing.
Scope of application of kraft paper bags: chemical raw materials, food, pharmaceutical additives, construction materials, supermarkets, shopping, clothing, and all applicable to kraft paper bags packaging industry.
As early as in the large retail industry has not yet been born in the 19th century, people usually work or live near the grocery store to purchase all the daily items. Those daily necessities were packed in barrels, bags or wooden boxes, after the bulk to the grocery store, how to sell them piecemeal to consumers, but it is a headache. People could only go out shopping with baskets or homemade burlap bags. At that time, the raw material for paper is still jute fiber and old linen head, low quality and scarce, even can not meet the demand for newspaper printing.
Around 1844, the German Friedrich Kohler invented the wood pulp papermaking, greatly promoting the development of the paper industry, but also indirectly gave birth to the history of the first commercial paper bags. 1852, the American botanist Francis Waller invented the first paper bag manufacturing machine, which was then promoted to France, Britain and other European countries. Then later, the birth of plywood paper bags and paper bag sewing technology advances in the past for bulk cargo transportation of cotton bags are also replaced by paper bags.
And to say that the first shopping kraft paper bags, it was born in 1908 in St. Paul, Minnesota, United States. A local grocery store owner, Walter DuVernay, began looking for ways to get consumers to buy more things at once in order to boost sales. DuVernay thought it would be a prefabricated bag that was inexpensive and easy to use, and could at least hold about 75 pounds.
After repeated tests, he locked the texture of such bags on kraft paper, because of its use of wood fibers longer coniferous tree pulping, in the cooking process through the chemical effects of the milder caustic soda and alkali sulfide chemicals for treatment, so that the wood fibers of the original strength of the less damaged, and thus the final production of the paper, the fibers are closely connected to each other, the quality of the paper is tough, and can withstand a greater tensile force and pressure and not rupture. Four years later, the first shopping kraft paper bags were born. It is rectangular in the bottom, than the traditional V-shaped bottom paper bags have a greater volume. A rope runs through its bottom and sides to increase its load-bearing capacity, and at the top end of the bag to form two easy to carry people to take the ring. DuVernay to his name for the name of this shopping bag, and in 1915 applied for a patent for it. At this time, the annual sales of this kind of shopping bag has more than 100 million.
With the global trend of “anti-plasticization”, environmentalists have begun to look at the old kraft paper bag. McDonald’s China began in 2006, gradually in all stores to implement a kind of thermal insulation properties of kraft paper bags to hold takeaway food, to replace the use of plastic food bags. This initiative has also been the positive response of other businesses, such as Nike, Adidas and other original large consumers of plastic bags, have begun to use high-quality kraft paper bags to replace plastic shopping bags.
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