History of kraft paper bags
As early as the 19th century when large-scale retail was not born, people usually bought everything in the grocery store near their work or residence. After those daily necessities are packed in wooden barrels, cloth bags or wooden boxes, and they are shipped to the grocery store in bulk, how to sell them to consumers in a piecemeal manner is a headache. People can only go shopping with baskets or homemade linen bags. At the time, the raw materials for papermaking were still jute fibers and old linen heads, which were of low quality and scarce quantities, and could not even meet the needs of newspaper printing. Around 1844, the German Friedrich Kohler invented the wood pulp papermaking technology, which greatly promoted the development of the paper industry and indirectly gave birth to the first commercial paper bag in history. In 1852, the American botanist Francis Waller invented the first paper bag making machine, which was subsequently promoted to European countries such as France and Britain. Later, the birth of plywood paper bags and advances in paper bag stitching technology made cotton bags used for bulk cargo transportation in the past replaced by paper bags.
When it comes to the first kraft paper bag for shopping, it was born in 1908 in St. Paul, Minnesota, USA. A local grocery store owner, Wald Duvena, has begun to find ways to allow consumers to buy more at once in order to boost sales. Duvina believes that it should be a prefabricated bag that is cheap and easy to use, and can bear at least about 75 pounds. After repeated experiments, he locked the texture of this bag on kraft paper because it was made from conifers with longer wood fibers and was treated with milder caustic soda and alkali sulfide chemicals during the cooking process, making The original strength of the wood fiber is less damaged, so the paper produced in the end, the fibers are tightly connected, the paper is tough, and can withstand large tensile and pressure without breaking. Four years later, the first kraft paper bag for shopping was born. It has a rectangular bottom and has a larger volume than a traditional V-bottom paper bag. A rope runs through its bottom and sides to increase its load-bearing capacity, and two pull loops are formed on the upper end of the paper bag for easy lifting. Duvena named the shopping bag in his own name and patented it in 1915. At this time, the annual sales volume of such shopping bags has exceeded 100 million.
