XIAMEN SUNBOO PACKAGING

Why is everyone using kraft paper bags?

Kraft paper bags are non-toxic, odorless, non-polluting, meet environmental protection standards, have high strength and high environmental protection, and are currently one of the most popular environmentally friendly packaging materials in the world. The use of kraft paper to make kraft paper bags has become more and more widely used. When shopping in supermarkets, shopping malls, shoe stores, clothing stores, etc., kraft paper bags are generally available, which is convenient for customers to carry the purchased items. Kraft paper bag is an environmentally friendly packaging bag with a wide variety.

Kraft paper bag is a kind of packaging container made of composite material or pure kraft paper. It is non-toxic, odorless, non-polluting, low-carbon and environmentally friendly. It conforms to national environmental protection standards. It has high strength and high environmental protection. It is currently one of the most popular environmentally friendly packaging materials in the world. one.

The kraft paper bag is based on all-wood pulp paper. The color is divided into white kraft paper and yellow kraft paper. A layer of PP film can be used on the paper to play a waterproof role. The strength of the bag can be made into one to six layers according to customer requirements. , printing and bag making integration. The opening and back cover methods are divided into heat sealing, paper sealing and paste bottom.

The scope of application of kraft paper bags: chemical raw materials, food, pharmaceutical additives, building materials, supermarket shopping, clothing and other industries that are suitable for kraft paper bag packaging.

Back in the 19th century, before large-scale retailing was born, people used to buy all their everyday items from a grocery store near where they worked or lived. After those daily necessities are packed in wooden barrels, cloth bags or wooden boxes and shipped to grocery stores in bulk, how to sell them to consumers in pieces is a headache. People can only go out shopping with baskets or homemade burlap bags. At that time, the raw materials for papermaking were still jute fibers and old linen heads, which were of poor quality and scarce in quantity, and could not even meet the needs of newspaper printing.

Around 1844, the German Friedrich Kohler invented wood pulp papermaking, which greatly promoted the development of the paper industry and indirectly gave birth to the first commercial paper bag in history. In 1852, American botanist Francis Waller invented the first paper bag making machine, which was subsequently extended to France, Britain and other European countries. Later, the birth of plywood paper bags and the advancement of paper bag sewing technology made the cotton bags used for bulk cargo transportation in the past to be replaced by paper bags.

When it comes to the first shopping kraft paper bag, it was born in St. Paul, Minnesota, USA in 1908. To boost sales, Walter Duviner, a local grocer, started looking for ways to get consumers to buy more at once. Duvina believes that it should be a prefabricated bag that is inexpensive and easy to use, and can hold at least about 75 pounds.

After trial and error, he locked the texture of the bag on kraft paper because it was pulped from conifers with longer wood fibers, treated with milder chemicals such as caustic soda and sulfide alkali during cooking, making the The original strength of wood fibers is less damaged, so the final paper produced has tight connections between fibers, and the paper is tough and can withstand greater tension 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 traditional V-bottom paper bags. 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 people to carry. Duviner named the shopping bag after himself and patented it in 1915. At this time, the annual sales of such shopping bags have exceeded 100 million.

With the global prevalence of "anti-plastic" wind, environmentalists have begun to turn their attention to the ancient kraft paper bags. Since 2006, McDonald's China has gradually implemented a kind of kraft paper bag with thermal insulation properties to hold take-out food in all stores to replace the use of plastic food bags. This move has also received positive responses from other businesses, such as Nike, Adidas and other big consumers of plastic bags, who have begun to use high-quality kraft paper bags to replace plastic shopping bags.