As a new procurement officer for cosmetic plastic bottles, understanding and mastering relevant knowledge is crucial for ensuring product quality, cost control, and market competitiveness. Below are some key points of knowledge to help you perform procurement work better.
I. Materials and Quality
The main materials for cosmetic plastic bottles include polyethylene (PE), polypropylene (PP), polystyrene (PS), and polyethylene terephthalate (PET), among others. When selecting materials, priority should be given to high-quality raw materials, as these materials can better maintain the performance of the bottles and ensure the stability of cosmetics in terms of quality and usage.
PE: Suitable for cosmetics containing oil or alcohol.
PP: Suitable for cosmetics containing water or emulsions.
PET: High transparency, often used for plastic bottles for nutritional supplements and food.
Additionally, choosing a high-quality processing factory is also key to ensuring material quality. By selecting manufacturers with a good reputation and professional expertise, better cost control and efficiency can be achieved.
II. Bottle Cap Materials
The material for bottle caps is generally polypropylene (PP). The shape and size of bottle caps for different types of plastic bottles need to be determined based on the usage of the plastic bottle and the volume of the refill. Appropriate cap size and shape not only facilitate usage but also ensure the cleanliness and sealing of the bottle. When selecting bottle cap manufacturers, priority should be given to well-known and professional manufacturers to ensure the quality and stability of the bottle caps.
III. Sealability and Water Vapor Permeability
Sealability and water vapor permeability are two important technical indicators for cosmetic plastic bottles, which have a crucial impact on the stability of the cosmetics inside the bottle. When purchasing, it should be ensured that the selected plastic bottles have good sealability to prevent external factors such as air and moisture from entering, thereby extending the shelf life of the cosmetics.
IV. Environmental Protection and Safety
With the increasing awareness of environmental protection, eco-friendly, low-carbon, and biodegradable plastic bottles are increasingly favored by the market. When purchasing, attention should be paid to the environmental performance of the bottles, and manufacturers that meet quality inspection standards and environmental requirements should be selected. Meanwhile, according to the "Hygiene Management Measures for Plastic Products and Raw Materials for Food Use" issued by the Ministry of Health, plastic bottles used for packaging pharmaceuticals, nutritional supplements, food, and beverages cannot use recycled materials.
V. Bottle Body Structure and Heat Sealing Technology
The bottle body structure and heat sealing technology are equally important, as they directly affect the stability and safety of the bottle. During procurement, attention should be paid to common quality issues such as bottom molding, bottle neck expansion, and neck bending of the bottle, and corresponding solutions should be understood. For example, insufficient bottom molding may be caused by inadequate high-pressure gas or insufficient temperature in the area of the bottom corner, while bottle neck expansion may be caused by too high cooling water temperature or insufficient flow rate in the furnace.
VI. Quality Standards and Supplier Audits
When purchasing, the quality of the product should be analyzed and judged based on the product quality standards of the manufacturing plant. In addition, auditing suppliers has become an essential part of purchasing plastic bottles. Through audits, an accurate assessment can be made of the manufacturer's software and hardware facilities, technical equipment, and overall quality level, thereby ensuring that the selected supplier can continuously provide high-quality products.
VII. Industry Trends and Technological Updates
The cosmetic plastic bottle industry is constantly developing, with new materials and processes emerging continuously. As a procurement officer, you should closely monitor industry trends and technological updates to find better-quality cosmetic plastic bottles. This can not only improve product quality but also enhance market competitiveness.
In summary, as a new procurement officer for cosmetic plastic bottles, it is necessary to understand and master knowledge related to materials and quality, bottle cap materials, sealability and water vapor permeability, environmental protection and safety, bottle body structure and heat sealing technology, quality standards and supplier audits, as well as industry trends and technological updates. Only by comprehensively understanding these knowledge points can you better perform procurement work, ensure product quality and cost control, and enhance market competitiveness.
