1. No matter what raw material is chosen to make a plastic bottle, it must first meet the requirements of non-toxicity and no peculiar smell. Due to the wide variety of main raw materials available, it is necessary to select the comprehensive properties of the raw materials. Generally, high-density polyethylene is used for tablets. Ethylene, polypropylene, polyester bottles (PET bottles) can be used if transparency is required, brown PET
bottles can be used if higher barrier properties are required, and light blocking and opaqueness are required. Liquid dosage forms generally use polypropylene bottles or polyester bottles. main raw material. At present, domestic nutritional health products and food packaging bottles are mainly made of PET or HPDE, and the caps are made of PP.
2. The tightness of the bottle body and the cap, and the water vapor permeability. Airtightness and water vapor permeability are two important technical indicators of plastic bottles, and they play a crucial role in the stability of the packaged product.
3, plastic bottle product quality standards. The quality of the product can be judged from the product quality standard of the manufacturer.
4. Recyclable materials must not be used for packaging medicines, nutritional health products, food and beverages. The "Measures for the Hygiene Management of Plastic Products and Raw Materials for Food" issued by the Ministry of Health has clear regulations on this: "All processing plastic tableware, containers, food The packaging materials shall not use recycled plastics." The regulations were issued and implemented on November 26, 1990.
5. Quality assurance system. Auditing suppliers has become an essential part of purchasing plastic bottles. Through the audit, it is possible to make a comprehensive and correct assessment of the production plant's software and hardware facilities, technical equipment, and comprehensive quality level.
6 Cavity Injection PET Preform Mold
PET preform mould is an injection mould, which is suitable for producing PET preforms. There are many preforms with different neck and weight for different bottles, such as the carbonated bottle, mineral water bottle, , pesticide bottle, oil bottle, cosmetics bottle, wide-mouth bottle and hot fill bottle etc.