What is the difference between glass bottles and plastic bottles for cosmetics?

Glass bottle is a traditional packaging product, its characteristics are: bright and transparent, good chemical stability, impermeability, easy to shape, but heavy, easy to break. 80% to 90% of glass packaging containers are glass bottles and cans. The density of soda-calcium glass bottle is 2.5-2.6g/cm3, which is brittle and has low thermal conductivity. The use of metal ion colorants can produce emerald green, dark green, light blue, amber glass.
The advantages of cosmetics glass bottles are: (1) good chemical stability, non-toxic, odorless, hygienic and clean, without any adverse effects on packaging; (2) good barrier, which can provide good quality assurance; (3) good transparency, clear visibility of the contents; (4) good rigidity, not easy to deform; (5) good moulding processing, which can be processed into a variety of shapes; (6) good temperature tolerance, can be high. Temperature sterilization can also be stored at low temperature; (7) abundant raw materials, recyclable and reusable, non-polluting cosmetics glass bottle shortcomings; (1) brittle, fragile; (2) heavy weight, high transportation costs; (3) large energy consumption in processing, serious environmental pollution; (4) poor printing performance.

Cosmetics plastic bottles: plastic is a kind of polymer synthetic material with many kinds. Its advantages are: (1) good mechanical properties, light weight, convenient storage and transportation, and easy to carry; (2) good permeability, sealing and transparency; (3) good processing performance, which can be used to manufacture bottles, caps, films, bags and composite packaging materials of various sizes; (4) decorative properties. Good dyeing and printing performance. Labels, instructions, labels and bar codes can be directly inkjet or printed on plastic materials without falling off; (5) Good chemical stability, weak toxicity, hygiene and safety. The disadvantage of plastic packaging container is that it is easy to carry static electricity, and its surface is easy to be polluted. Discarded materials will cause environmental pollution, so it is difficult to recycle.

The above is the difference between the two, but as a whole, cosmetics glass bottles have good sealing performance, chemical stability, and high-grade materials, which can effectively ensure that the content does not deteriorate for a long time. It is an ideal choice for cosmetics packaging.