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What knowledge should newly entered cosmetic plastic bottle buyers know?

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What knowledge should newly entered cosmetic plastic bottle buyers know?

2025-01-13

As a cosmetic plastic bottle buyer who is new to the industry, it is critical to understand and have the knowledge to ensure product quality, cost control, and market competitiveness. Below are some key knowledge points to help you do a better job of purchasing.

  1. Material and quality

The main materials for cosmetic plastic bottles include polyethylene (PE), polypropylene (PP), polystyrene (PS) and polyethylene terephthalate (PET). When choosing materials, priority should be given to high-quality raw materials, as these materials can better maintain the performance of the bottle and ensure the stability of cosmetics in quality and use.PE: suitable for oil-containing and alcohol-containing cosmetics.PP: suitable for water-containing and lotion-containing cosmetics.PET: high transparency, commonly used in plastic bottles of nutritional health care products and food. In addition, choosing a quality processing plant is key to ensuring the quality of the material. By choosing manufacturers with good reputation and specialisation level, costs and benefits can be better controlled.图片1图片2

  1. Bottle cap material

Polypropylene (PP) is generally chosen as the material for bottle caps. The shape and size of caps for different plastic bottle types need to be determined by the way the plastic bottle is used and the volume of the refill. The right cap size and shape is not only easy to use, but also ensures the cleanliness and closure of the bottle. When choosing bottle cap manufacturers, priority should be given to manufacturers with reputation and specialisation level to ensure the quality and stability of the caps.

  1. Sealing and water vapour permeability

Sealability and water vapour permeability are two important technical indicators of plastic cosmetic bottles, which play a vital role in the stability of cosmetics inside the bottle. When purchasing, we should ensure that the selected plastic bottles have good sealing to prevent air, moisture and other external factors from entering, so as to extend the shelf life of cosmetics.

  1. Environmental protection and safety

With the enhancement of environmental awareness, environmentally friendly, low-carbon, biodegradable plastic bottles are increasingly favoured by the market. When purchasing, you should pay attention to the environmental performance of the bottles and choose manufacturers that meet quality control standards and environmental requirements. Meanwhile, according to the ‘Hygienic Management Measures for Plastic Products and Raw Materials for Food Use’ issued by the Ministry of Health, plastic bottles used for packaging medicines, nutritional supplements and food and beverages cannot use recycled materials.

  1. Bottle structure and heat sealing technology

Bottle structure and heat sealing technology are equally important, they directly affect the stability and safety of the bottle. During the purchasing process, attention should be paid to common quality problems such as bottom moulding, bottle mouth expansion and neck bending of bottles, and the corresponding solutions should be understood. For example, a less than full bottom moulding may be due to insufficient high pressure gas or insufficient temperature in the area where the bottom corner is located, while a swollen neck may be due to too high a temperature or insufficient flow rate of the furnace cooling water.

  1. Quality standards and supplier audits

When purchasing, the quality of the product should be analysed from the product quality standards of the manufacturing plant to determine the quality of the product. In addition, the supplier audit has become an essential and important part of the procurement of plastic bottles. Through the audit, you can make a correct assessment of the production plant's software and hardware facilities, technical equipment, quality and comprehensive level, so as to ensure that the selected supplier can continue to provide high-quality products.

  1. Industry dynamics and technology updates

Cosmetic plastic bottle industry continues to develop, new materials, new processes are emerging. As a procurement staff, should pay close attention to industry trends and technological updates, looking for better quality cosmetic plastic bottles. This will not only improve product quality, but also enhance market competitiveness.

In summary, as a cosmetic plastic bottle purchasing personnel who are just entering the industry, they need to understand and master the knowledge of materials and quality, cap materials, sealing and water vapour permeability, environmental protection and safety, bottle structure and heat sealing technology, quality standards and supplier audits, as well as industry dynamics and technology updates. Only with a comprehensive understanding of these knowledge points, we can better carry out procurement work, ensure product quality and cost control, and enhance market competitiveness.