Kraft paper is a kind of paper produced by a specific type of pulping process. Generally, in papermaking, wood is first "crushed", and then some chemical substances (sulfate) are used to treat cellulose pulp to improve the strength of paper. So he named his paper kraft paper.
This is why this material is finally used as a packaging material, because it has durable and useful properties in kraft paper packaging.
This is why it can solve thousands of problems, and there are many different names, such as wrapping paper, recycled paper, wrapping paper, kraft paper, printing paper
How is kraft paper made?
1. The structural components of wood are lignin and cellulose. Since lignin cannot be made into good paper, it must be separated from cellulose.
2. The wood chips are cooked in a liquid made of sodium sulfide and sodium hydroxide. They break down lignin and cellulose, leaving solid wood pulp.
3. At this time, the sawdust has been converted into pulp and screened to remove larger chips.
4. After washing, the impurities left in the pulp can be removed, and various paper products can be made.
5 kinds of kraft paper and their main uses
1. Natural pure kraft paper
Natural native kraft paper is made of pure wood pulp, which is also known as pure wood pulp kraft paper. It has a closely interwoven cellulose fiber structure, so the paper has a very good bearing capacity and is not easy to tear. In addition, with low production cost, the original kraft paper is an ideal choice for the packaging industry.
In addition, it also well meets the printing needs, so packaging with brand name is very popular on pure kraft paper.
2. Recycled kraft paper
Recycled kraft paper is made of recycled fiber (including recycled recycled waste pulp). Colorants are added to stabilize the paper color.
Although it is not as durable as the original kraft paper, the recycled kraft paper is a more environmentally friendly choice and still has the strength required for padding and filling operations. Fill the gap, make box lining, box or lining, and excellent newspaper bottom packaging
The standard weight of most raw and recycled kraft paper ranges from 30 gsm to 70 gsm.
3. White or bleached kraft paper
White kraft paper is similar to pure wood kraft paper in strength and durability, but it is white or bleached to make the paper cleaner and sharper. This is the answer for printing operations. Many restaurants use white kraft paper as a substitute for linen tablecloths, which is economical and environmentally friendly.
Of course, white kraft paper can also be used for packaging, and can withstand the standard wear of packaging just like pure kraft paper.
4. Black Kraft Paper
Black kraft paper is very suitable for brand promotion because it can impress the audience with this unique color.
In addition, they can also be used for decoration, album lining paper, etc.
5. Colored Kraft Paper
Colored kraft paper is a kind of dyed paper product. Although it is dyed, it does not affect its original performance.
What better way to use it than standard school supplies, scrapbooks or school and children's craft sheets, and can also be used as craft supplies.
Why is kraft paper better than plain paper?
1. Stronger kraft paper
Kraft paper is stronger and more resistant to puncture than ordinary paper because of its low lignin content and high sulfur content.
2. Kraft paper is durable and has lower production cost
Since it retains its natural color and texture, no additional bleaching and dyeing steps are required.
This can save money because there must be less handling of materials and away from the chemical environment. Excessive bleaching also reduces the strength of the paper and increases production costs.
3. Many kinds of raw materials are used
Kraft paper can be made from a variety of woods, such as pine, bamboo and oak. This means that it is easier to manufacture, so there is sufficient supply - which means that the cost of materials is lower.
The quality of wood is quite extensive, which means that high-density and low-density wood can be mixed together.
4. Recyclable and recyclable
As almost all the chemicals used in this process can be recycled and reused, kraft paper can be recycled to reduce the environmental burden, environmental protection and economy.
The main unrecycled by-products are turpentine and high oil used for other manufacturing purposes.
Enterprises use kraft paper for product packaging. Kraft paper packaging has the following advantages:
1. Since it will not add too much weight to the package, the use of kraft paper packaging can reduce the transportation cost.
2. The low lignin in kraft paper makes it harder and more durable than other materials.
3. The texture has high ductility and strength, and its flexibility provides more product protection.
4. Design elements can be used, and the style is simple and beautiful. Natural materials give people a simple and attractive feeling and appearance.
5. Environmental protection, kraft paper can be recycled and degraded quickly under natural conditions. Potential customers will appreciate your environmental awareness as an affirmation of your personality.
