What are the commonly used packaging box materials in the market?

As an important city for export and foreign trade, Shenzhen often sees various types of packaging boxes in the market, but what are the materials? Ordinary packaging is just because it is relatively simple in material and structure. Most of them are two-layer structure, or even single-layer structure, that is, film (used for Dim sum packaging of bread desserts). The commonly used materials mainly include PET, VMPET, KPET, matte PET, OPP, pearlescent OPP, matte OPP, VMOPP, KOP, CPE, milky white PE, CPP, and VMCPP, which are mostly used for conventional packaging. BOPA and AL are not widely used in ordinary packaging, and these two materials are generally used in high-end packaging.1、 Paper materialsYou can also see boxes made of low/micro corrugated paper with higher strength, such as white board paper with different grams of weight, white cardboard with different grams of weight, etc. (such as gray background white board paper, white background white board paper, double-sided coated white cardboard, etc.).2、 Plastic materialsPlastic flexible packaging is generally divided into three major sections; Solvent free composite, dry composite, and extrusion composite. Among them, dry lamination is the absolute mainstream, and the printing of dry lamination is generally done through gravure printing and inner printing, with inner printing being the majority.3、 Materials for food packaging boxesThe materials used in food packaging boxes are mostly transparent, water resistant, and high barrier packaging bags. According to the weight of the content, they are generally divided into two layer structures (KPA/PE) and three layer structures. After the printing is completed, there are sometimes some post-press auxiliary processes, such as embossing, silver/gold stamping, window opening, film sticking, and so on.