A variety of packaging materials are often used by people in everyday life. Their range is quite diverse. This is polyethylene, and air-bubble film, and cardboard, and foam foam, and plastic containers, and kraft paper, and much more.
Important criteria when choosing a material for packaging are strength, convenience, aesthetic appearance, environmental friendliness. The last criterion is especially relevant in our time, because a huge amount of packaging materials are thrown into landfills every day, and the question of their proper disposal is vital for environmental safety. The most durable wrapping paper-kraft, used for packaging purposes and the manufacture of various paper products, maximally satisfies the above requirements.
Benefits
Translated from the German language, the word "craft" means "strength", "power". Indeed, paper of this grade is characterized by high strength characteristics, including such indicators as resistance to breakage, punching.
Packaging made of this material sticks well, does not swell when moisture enters, has breathability and resistance to temperature changes. Kraft paper is of natural origin, which indicates its environmental friendliness.
Production technology
The technology for manufacturing high-strength wrapping paper has been known since 1852, but the production of this packaging material has not gained industrial scale until a century later. From the United States, where kraft paper was first invented, its production method has spread throughout the world. The base for the manufacture is long-fiber cellulose, which is obtained from wood as a result of sulphate cooking, known as the craft process. It is the wood base that provides high strength characteristics and the resistance of paper to mechanical damage, and in addition, makes it possible to further use this material as a secondary raw material.
Views
The color of kraft paper depends on the quality of the pulp that is part of it. Brown paper is obtained from unbleached wood, and a range of shades from light yellow to white gives bleached raw materials. This packaging material is used to make corrugated board, convenient paper bags, bags, boxes, and envelopes. In addition, Kraft paper is produced in rolls and sheets of various sizes.
The material has a small volume and weight, easy to use. All products are characterized by high strength, which is higher, the higher the density of paper (in the range of 35-120 g / m2). Washable kraft paper has the highest density. Its main difference is resistance to moisture. The texture of this material resembles leather, it can be ironed, washed, stitched, so washable kraft paper is often used in the textile industry.
Application
The unique properties of this material allow its use in many areas of human activity, primarily as unique packaging products. That just does not pack up in high-strength bags and kraft paper bags! This and bulk building materials, and food, and various items requiring safety during delivery. Such a durable airtight container is a reliable protection when transporting various goods, as well as fragile items. Kraft paper bulk envelopes for packing mail are very popular.
Products made of this material become an excellent means of advertising if they are marked with an advertising text or logo of the manufacturer. For packing goods sold to the buyer, sellers often use boxes with bright prints and colorful bags of various configurations, with or without handles. Such an attractive package not only reminds customers of pleasant acquisitions, but can also serve them for any purpose for a long time.
Colored kraft paper is also used for decorative and artistic works, for example, in scrapbooking or for making cards, and in printing for book covers.
The use of kraft paper in medicine
Kraft packages are widely used in medicine. They are used for packaging and temporary sterilization of medical instruments and kits of any kind. The packaging is sealed with adhesive tape. When closed, the bags are impervious to microorganisms for about 50 days. The indicator on the outside of the package after sterilization changes color from green to pink, making it easy to determine where sterile medical material is.
Kraft paper is gradually and steadily replacing synthetic packaging materials that are harmful to human health and harmful to the environment, which, given the unique properties and low cost of this material, is not surprising to anyone.