1. Sealing property and water vapor permeability of the bottle body and the cover. Sealability and water vapor permeability are two important technical indicators of plastic bottles, which play an important role in the stability of the packaged product.
2. Regardless of the choice of plastic bottles made of raw materials, it must first meet the requirements of non-toxic, non-odor, etc. Due to the wide variety of main raw materials available, it is necessary to select the comprehensive properties of the raw materials. Ethylene, polypropylene, if you need transparency, you can choose polyester bottle (PET bottle). If you need higher barrier performance, and block light and opaque, choose brown PET bottle. Liquid dosage form is generally made of polypropylene bottle or polyester bottle. Main raw material. At present, the domestic bottle of nutrition and health products and food is mainly made of PET material or HPDE, and the bottle cap is made of PP material.
3, plastic bottle product quality standards. From the product quality standards of the production plant, the quality of the product can be analyzed and judged.
4. For the packaging of medicines, nutraceuticals, foods and beverages, the Ministry of Health shall promulgate the "Administrative Measures for the Sanitary Control of Plastic Products and Raw Materials for Foods" promulgated by the Ministry of Health. "There are clear regulations on the processing of plastic utensils, containers and food. Recycling plastics shall not be used for packaging materials." The regulations were promulgated on November 26, 1990.
5. Quality assurance system. Auditing suppliers has become an essential part of the procurement of plastic bottles. Through auditing, a comprehensive and correct assessment of the software and hardware facilities, technical equipment and quality level of the production plant can be made.
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