What are the common packaging materials, their advantages, disadvantages and scope of application?

Commonly used packaging materials are paper, plastic, glass and metal. Advantages of paper: low price, environmental protection and sanitation, disadvantages: large dosage, can not be recycled. Widely used, common gift boxes and portable paper bags, as well as packaging and tag of some export products.

1. Packaging materials refer to materials used to make packaging containers, packaging decoration, packaging printing, packaging transportation and other products to meet the packaging requirements. Packaging includes metal, plastic, glass, paper, bamboo, wood, iron, ceramics, acrylic, leather, cloth and so on. Today, we mainly look at the materials commonly used in printing and packaging lines. Paper is the main material of product packaging in our country, and its printing effect is good, which can show the patterns, characters and techniques we want vividly on the surface of paper. There are many kinds of paper. The following are commonly used papers in printing and packaging.

Coated paper: There are two kinds of coated paper: single-sided and double-sided. Coated paper is mainly made of wood, cotton fiber and other advanced raw materials. It is also called coated white card when it is 70g-400g per square meter, and it is more than 250g. The surface of the paper is coated with a layer of white pigment, and the bottom is bright after printing. Suitable for multi-color overprinter printing, with bright colors, rich level changes, clear graphics and common use.

2. Whiteboard paper: There are two kinds of paper with gray background and white background. The gray background is often called powder gray or single-sided white, and the white background is often called single powder card or white cardboard. The paper is solid and thick, smooth and white, with good strength, surface strength, folding resistance and printability. Suitable for folding boxes, hardware packaging, sanitary ware boxes, portable paper bags, etc. Low cost and wide application.

Kraft paper: Kraft paper is often white and yellow, namely white kraft paper and yellow kraft paper. The gray color of kraft paper itself endows it with rich and colorful connotation and simple and honest feeling, so as long as it is printed with a set of colors, it can show its inner charm. Because the price is low and economical, designers like to design dessert packaging with kraft paper, and the packaging department of kraft paper will bring intimacy.