Why Are Everyone Using Kraft Paper Bags?- Yiwu Yuanda Color Printing Co., Ltd.

Kraft paper bags are non-toxic, odorless and pollution-free, Meeting national environmental standards. They have high strength and environmental friendliness, And are currently one of the most popular environmentally friendly packaging materials internationally. The use of kraft paper to make kraft paper bags is becoming increasingly widely used. When shopping in supermarkets, Shopping malls, shoe stores, clothing stores and other places, Kraft paper bags are generally available to facilitate customers to carry and purchase items. Kraft paper bags are an environmentally friendly packaging bag with a wide variety of types.

Kraft paper bag is a packaging container made of composite materials or pure kraft paper. It is non-toxic, odorless, pollution-free, low-carbon and environmentally friendly, Meets national environmental standards, Has high strength and environmental protection, And is currently one of the most popular environmentally friendly packaging materials internationally.

Kraft paper bags are made from whole wood pulp paper as the base material, with colors divided into white kraft paper and yellow kraft paper. PP material can be coated with a layer of film on the paper to provide waterproofing. The bag strength can be made into one to six layers according to customer requirements, And printing and bag making are integrated. The opening and sealing methods are divided into heat sealing, paper sealing and paste bottom.

Applicable scope of kraft paper bags: chemical raw materials, food, pharmaceutical additives, Building materials, supermarket shopping, clothing, and all other industries suitable for kraft paper bag packaging.

As early as the 19th century, Before the emergence of large-scale retail, people usually purchased all daily items from grocery stores near their work or residence. It is a headache to sell daily necessities that are packed in wooden barrels, bags, or boxes, and then transported in bulk to grocery stores. People can only go shopping with baskets or homemade burlap bags. At that time, the raw materials for papermaking were still jute fiber and old hemp cloth, with poor quality and scarce quantity, Which could not even meet the needs of newspaper printing.

Around 1844, German Friedrich Kohler invented wood pulp papermaking, greatly promoting the development of the paper industry and indirectly giving birth to the first commercial paper bag in history. In 1852, American botanist Francis Waller invented the first paper bag making machine, which was later promoted to various European countries such as France and the United Kingdom. Later, the birth of plywood paper bags and the advancement of paper bag stitching technology led to the replacement of cotton bags used in the transportation of bulk goods with paper bags.

When it comes to the first shopping kraft paper bag, it was born in 1908 in St. Paul, Minnesota, USA. A local grocery store owner, Walter Duvina, started looking for ways to encourage consumers to buy more things at once in order to boost sales growth. Duvina believes that it should be a pre made bag that is low-cost and easy to use, And can withstand at least about 75 pounds of weight.

After repeated experiments, He locked the texture of this bag onto kraft paper because it uses coniferous trees with longer wood fibers for pulping. During the cooking process, Mild chemical agents such as caustic soda and sulfurized alkali are used to treat the original strength of the wood fibers, Resulting in less damage. As a result, The resulting paper has tight connections between the fibers and is tough, Capable of withstanding significant tensile and compressive forces without breaking. Four years later, The first shopping kraft paper bag was born. It has a rectangular bottom and a larger capacity than traditional V-shaped bottom paper bags. A rope runs through its bottom and sides to increase its load-bearing capacity, and two pull loops are formed at the upper end of the paper bag for people to carry. Duvina named this shopping bag after himself and applied for a patent for it in 1915. At this time, The annual sales volume of this shopping bag has exceeded 100 million units.

With the global trend of anti plastic, Environmentalists are once again turning their attention to the ancient kraft paper bags. Since 2006, McDonald's China has gradually implemented a heat-insulating kraft paper bag in all its stores to hold takeout food, Replacing the use of plastic food bags. This measure has also received positive responses from other businesses, Such as Nike, Adidas and other former plastic bag consumers, Who have started to use high-quality kraft paper bags to replace plastic shopping bags.