Plastic bottle manufacturer principle
1. Regardless of the choice of plastic bottles made of raw materials, first of all, it must meet the requirements of no odor. Due to the wide variety of main raw materials available, it is necessary to select the comprehensive properties of raw materials. Generally, high-density polyethylene and polypropylene are used for tablets. For bottles, if you need transparency, you can use polyester bottles (PET bottles). If you need high barrier properties, and block light or opaque, use colored PET bottles. At present, the domestic nutrition and health care products and food packaging bottles are mainly made of PET material or HPDE ,, and the bottle cap is made of PP material.
2. 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.
3, quality assurance system ISO, auditing suppliers has become an important 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.
4, plastic bottle product quality standards. From the product quality standards of the production plant, the quality of the product can be analyzed and judged.
5. For the packaging of medicines, nutraceuticals, foods and drinks can not be used, the Ministry of Health issued the "Food Plastics and Raw Materials Hygiene Management Measures" has clear provisions: "Where processing plastic utensils, containers, food packaging Materials, no recycled plastics may be used." The regulations were promulgated on November 26, 1990.