Traditional Culture Encyclopedia - Traditional festivals - What are the common plastic packaging materials?
What are the common plastic packaging materials?
1. Paper 1. Whiteboard 2. Coated paper: there are two kinds: single-sided and double-sided The raw materials of coated paper are refined from high-grade raw materials such as wood and cotton fiber.
3. Offset paper 4. Cardboard 5. Kraft paper 6. Art paper 7. Recycled paper Cellophane 9. Yellow paper 10. Aluminum foil paper 1 1. corrugated paper
Second, plastic packaging materials
The molding methods of plastic window packaging mainly include the following three types:
Total butyl 1. Squeeze 2. Injection 3. blow moulding
Third, metal packaging materials Metal packaging materials mainly include tinplate, stainless steel, aluminum and aluminum foil.
Fourth, glass packaging materials.
Glass can be divided into the following three forms by composition: 1. Sodium glass 2. Lead glass 3. Borosilicate glass.
The molding of glass containers can be divided into three types according to the manufacturing methods: hand blowing, mechanical blowing and extrusion molding.
5. Ceramic products are traditional packaging containers. Commonly used are pottery pots, pottery bottles and porcelain pots.
Six, natural materials
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