PET blister sheets, with their excellent performance and environmental protection advantages, have rapidly emerged in the field of food packaging in recent years and become a hot-selling product in the Middle East market. This article will give a comprehensive introduction to the principles, production processes, advantages, historical sources, development prospects and raw materials of PET blister sheets to help you gain an in-depth understanding of this new packaging material.
PET blister sheet, as the name suggests, is a blister sheet made of polyethylene terephthalate (PET) material. PET is a thermoplastic with excellent transparency, chemical resistance, high strength and recyclability.
Blister molding is a plastic processing technology that heats and softens the PET sheet, and then uses vacuum suction or air pressure to adsorb the sheet to the surface of the mold to allow it to cool and shape. Through blister molding, PET sheets can be made into various shapes of packaging boxes, trays, covers and other products.
The production process of PET blister sheets mainly includes the following steps:
· Raw material preparation: After drying, mixing and other processes, the PET particles are made into raw materials suitable for production.
· Extrusion molding: The PET roll is heated and melted, plasticized into a uniform melt through an extruder, and extruded from the die into a PET sheet.
· Cooling and shaping: The PET sheet is cooled and shaped through a cooling roller or a water tank to obtain a PET sheet with the required thickness and hardness.
· Blister molding: After heating and softening the PET sheet, the sheet is adsorbed to the surface of the mold with the help of vacuum suction or air pressure, allowing it to cool and shape to obtain a PET packaging product of the desired shape.
Compared with traditional packaging materials (such as cartons, foam plastics, etc.), PET blister sheets have the following significant advantages:
· High transparency: PET blister sheet has excellent transparency, which can clearly display the appearance of food, vegetables and fruits, and enhance the visual appeal of the product.
· Chemical resistance: PET blister sheet has good chemical resistance, can withstand the erosion of various foods and beverages, and is safe and hygienic.
· High strength: PET blister sheets have high strength and stiffness, which can effectively protect food, vegetables and fruits from collision and extrusion.
· Recyclability: PET blister sheet is a recyclable material that can reduce environmental pollution.
· Easy to process: PET blister sheets are easy to process and shape, and can meet the needs of various shapes and sizes.
PET material was first synthesized by American scientist W.H. Carothers in the 1930s, but mass production did not begin until the 1950s. The emergence of PET blister sheets is the result of the expansion of the application fields of PET materials. As the demand for food packaging continues to grow, PET blister sheets have quickly become one of the mainstream materials in the field of food packaging due to their excellent performance.
As people pay more and more attention to food safety and environmental protection, PET blister sheets will be more widely used in the field of food packaging. It is expected that the market demand for PET blister sheets will maintain rapid growth in the next few years.
The raw material of PET blister sheet is PET particles. PET pellets can be made from raw materials such as oil or natural gas. In recent years, with the utilization of renewable resources, some PET particles are also made of recycled PET materials.
PET blister sheets are becoming a new generation leader in the food packaging industry with their excellent performance, environmental protection advantages and broad development prospects. If you are looking for a safe, environmentally friendly, beautiful and practical food packaging solution, PET blister sheet will be your best choice.
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