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In recent years, kraft paper has become the paper of choice in many fields due to its high strength, versatility and, most importantly, low environmental impact. In fact, one of its main features is that it is 100% ** and environmentally friendly.
What is Kraft Paper?
Kraft ** is paper or cardboard produced from chemical pulp produced by kraft paper process, due to kraft pulp process, the original kraft paper has toughness, water resistance, tear resistance, and yellow-brown color.
Kraft pulp is darker in color than other wood pulps but can be bleached to make a very white pulp. Completely bleached kraft pulp is used to make high-quality paper, where strength, whiteness, and resistance to yellowing are very important.
History of kraft paper and production processKraft paper is a commonly used packaging material, named after the kraft pulping process. The kraft paper craft was developed by Carl F. DahlDAHL) was invented in Danzig, Prussia, Germany, in 1879. Its name ** in German: "kraft" means strength or vitality.
The basic elements in making kraft pulp are wood fibers, water, chemicals, and heat. Kraft pulp is made by mixing wood fibers with a solution of caustic soda and sodium sulfide and cooking in a digester.
Kraft paper and plain paper
In simple terms, kraft paper is stronger.
As a result of the previously mentioned kraft process, more wood is stripped from the kraft pulp, leaving more fibers, giving the paper tear-resistant and durable properties.
Natural kraft paper is also often more porous than ordinary paper, which makes it slightly less effective for printing, but it is very suitable for some special processes, such as embossing or hot stamping.
The application of kraft paper on packagingToday, kraft paper is mainly used in corrugated boxes, as well as plastic-free paper used in paper bags such as cement, food, chemicals, consumer goods, flour bags, etc. To explain more about corrugated boxes, we have talked about it in the past.
3 minutes! Due to the durability and practicality of kraft paper, corrugated boxes are very popular in the express logistics industry, cartons can protect products well, and can withstand harsh transportation conditions, plus the cost is in line with the development of enterprises.
Kraft cartons are also commonly used by businesses to achieve sustainability goals and clearly depict environmental initiatives through the unpretentious and pristine appearance of brown kraft paper. Kraft paper is very versatile and offers a wide range of innovative packaging in today's packaging industry.
Types of kraft paperKraft paper usually retains its original yellow-brown color, making it suitable for making bags and wrapping paper. Kraft paper has a variety of uses depending on its nature and use. Kraft paper is a general term for paper. There are no specific specifications. It is generally classified according to its nature and use.
Press colorIt can be divided into primary color kraft paper, red kraft paper, white kraft paper, flat kraft paper, single light kraft paper, two-color kraft paper, etc. By useDifferent can be divided into packaging kraft paper, waterproof kraft paper, inclined kraft paper, anti-rust kraft paper, pattern kraft paper, insulated kraft cardboard, kraft stickers, etc. By MaterialIt can be divided into recycled kraft paper, kraft core paper, kraft base paper, kraft wax paper, wood pulp kraft paper, composite kraft paper, etc. Common kraft paper
1. Coated unbleached kraft paper (CUK).