Generally speaking, common paper packaging materials include corrugated paper, cardboard paper, white board paper, white cardboard, gold and silver cardboard, etc. Different types of paper are used in different fields according to different needs, so as to improve the products. Protective effects.
corrugated paper
According to the flute type, corrugated paper can be divided into seven categories: A pit, B pit, C pit, D pit, E pit, F pit, and G pit. Among them, A, B, and C pits are generally used for outer packaging, and D, E pits Generally used for small and medium packaging.
Corrugated paper has the advantages of lightness and firmness, strong load and pressure resistance, shock resistance, moisture resistance, and low cost. Corrugated paper can be produced into corrugated cardboard, and then made into different styles of cartons according to customer orders:
1. Single-sided corrugated cardboard is generally used as a lining protective layer for commodity packaging or to make light card grids and pads to protect commodities from vibration or collision during storage and transportation;
2. Three-layer or five-layer corrugated cardboard is used to make sales packaging of goods;
3. Seven-layer or eleven-layer corrugated cardboard is mainly used to make packaging boxes for mechanical and electrical products, furniture, motorcycles, and large household appliances.
Cardboard
Boxboard paper is also called kraft paper. Domestic boxboard paper is divided into three grades: high-quality, first-class, and qualified products. The texture of the paper must be tough, with high bursting resistance, ring compressive strength and tearing, in addition to high water resistance.
The purpose of cardboard paper is to bond with a corrugated paper core to make a corrugated box, which is used for packaging household appliances, daily necessities and other external packaging, and can also be used for envelopes, shopping bags, paper bags, cement bags, etc.
White paper
There are two types of white board paper, one is for printing, which means “white board paper” for short; the other specifically refers to writing paper suitable for white board.
Because the fiber structure of white paper is relatively uniform, the surface layer has filler and rubber composition, and the surface is coated with a certain amount of paint, and has been processed by multi-roll calendering, the texture of the paperboard is relatively compact and the thickness is relatively uniform.
The difference between whiteboard paper and coated paper, offset paper, and letterpress paper is the weight of the paper, the thicker paper, and the different colors of the front and back. The whiteboard is gray on one side and white on the other side, which is also called gray coated white.
Whiteboard paper is whiter and smoother, has more uniform ink absorption, less powder and lint on the surface, stronger paper and better folding resistance, but its water content is higher, and it is mainly used for single After surface color printing, it is made into cartons for packaging, or used for design and handmade products.
White cardboard
White cardboard is a single-layer or multi-layer combined paper made entirely of bleached chemical pulping and fully sized. It is generally divided into blue and white single-sided copperplate cardboard, white-bottomed copperplate cardboard, and gray-bottomed copperplate cardboard.
Blue and white double-sided copper Sika paper: Divided into Sika paper and copper Sika, Sika paper is mainly used for business cards, wedding invitations, postcards, etc.; Copper Sika is mainly used for book and magazine covers, postcards, cards, etc. that require fine printing Carton.
Coated cardboard with white background: Mainly used to make higher-grade cartons and vacuum blister packaging. Therefore, the paper must have the characteristics of high whiteness, smooth paper surface, good ink acceptability, and good gloss.
Gray-bottomed copperplate cardboard: the surface layer uses bleached chemical pulp, the core and bottom layers are unbleached kraft pulp, ground wood pulp or clean waste paper, suitable for color printing of high-end carton boxes, mainly used to make various carton boxes and hardcover book covers .
Copy paper is a kind of advanced cultural and industrial paper that is difficult to produce. The main technical characteristics are: high physical strength, excellent uniformity and transparency, and good surface properties, fine, flat, smooth, and bubble-free Sand, good printability.
Copy paper is a kind of advanced cultural and industrial paper that is very difficult to produce. The main technical characteristics of this product are as follows: high physical strength, excellent uniformity and transparency, and good appearance properties, fine, smooth and smooth , No bubble sand, good printability. Generally, the production of printing paper is divided into two basic processes: pulp and papermaking. Pulp is the use of mechanical methods, chemical methods or a combination of the two methods to dissociate plant fiber raw materials into natural pulp or bleached pulp. In papermaking, pulp fibers suspended in water are combined through various processes into paper sheets that meet various requirements.
Post time: Dec-16-2021