- 2020-12-01 13:08:24
First, the development history of plastic bottles:
In the 1980s, with the continuous introduction of advanced plastic bottle production lines from abroad, the prelude to "plastic" instead of "glass" began, and plastic bottles have been widely used in the packaging field since then. Plastic bottles are mainly made of non-toxic high-molecular polymers such as high-density polyethylene (HDPE), polyester (PET), polypropylene (PP), and polycarbonate (PC), and adopt advanced plastic molding processes. And equipment to produce various plastic bottles, mainly containing all kinds of capsules, tablets, powders, granules, gel pills, oral liquids and other solid and liquid.
Second, the use of plastic bottles:
At present, most of the medicines, nutrition and health products, and various foods and beverages sold in the domestic market are packaged in plastic bottles. You can go to the drug store or supermarket, and you can find products packed in plastic bottles everywhere. Polyester bottles (PET bottles) and high-density polyethylene bottles (HDPE bottles) are mainly used for medicines and nutritional health products. Polyester bottles (PET) are mainly used for drinks. High-density polyethylene is used for daily products such as shampoos and shower gels. There are many bottles (HDPE bottles). The biggest feature of plastic bottles is light weight, not fragile, clean and beautiful, and some of its technical indicators and a lot of data show that its chemical resistance, water vapor permeability and sealing performance are excellent, it can completely The product acts as a safety shield and protection.
Three, the principle of selecting plastic bottles:
l No matter what kind of raw material plastic bottle is selected, it must first meet the requirements of non-toxicity, no odor, etc. Because of the wide variety of main raw materials that can be selected, this requires the comprehensive performance of the raw materials to be selected. Generally, high-density polymer tablets are selected. Ethylene, polypropylene bottles, polyester bottles (PET bottles) can be used if transparency is required, brown PET bottles are used for higher barrier properties, and light blocking and opacity. Polypropylene bottles or polyester bottles are generally used for liquid pharmaceutical products. As the main raw material. At present, domestic packaging bottles of nutritional health products and food are mainly made of PET material or HPDE, and bottle caps are made of PP material.
2. Sealability of bottle body and cap, water vapor permeability. Sealability and water vapor permeability are two important technical indicators of plastic bottles, and they have an important impact on the stability of the packaged product.
3. Quality standards for plastic bottles. The quality of the product can be analyzed and judged from the product quality standards of the manufacturing plant.
4. Quality assurance system. Auditing suppliers has become an essential part of purchasing plastic bottles. Through the audit, a comprehensive and correct assessment can be made of the comprehensive level of software and hardware facilities, technical equipment and quality of the production plant.
5. For packaging medicines, nutritional health products, food and beverages, it is absolutely not allowed to use recycled materials. The "Administrative Measures for the Hygienic Management of Plastic Products and Raw Materials for Food" issued by the Ministry of Health has clear regulations on this: "Where processing plastic utensils, containers, food Packaging materials must not use recycled plastic. "The regulations were issued on November 26, 1990.
Fourth, the status of plastic bottles
塑料 Plastic bottles can be seen everywhere in life. Plastic bottles are closely related to people's daily life. It can be said that no one knows that no one knows them everywhere. There are also large-scale plastic recycling bases in China, but the supervision is not standardized and the quality is uneven. In addition to many plastic bottles made of recycled materials, it is harmful to people's health, as well as pollution during work and transportation, which also seriously harms consumers' health.
《The "Administrative Measures for the Hygienic Management of Plastic Products and Raw Materials for Food" of the Ministry of Health has clearly stipulated: "Anyone who processes plastic food utensils, containers, food packaging materials must not use recycled plastic." The recycled waste plastic can be processed into other supplies. At present, driven by the interests of many businesses, they often choose low-cost recycled materials to make products, which is really worrying. If you find impurities in the bottle during use, when the transparency of the transparent bottle is low, you need to be vigilant and polish your eyes.