What is the Difference between Plastic Bottles and Glass Bottles for Cosmetics?

November 15,2022

Nowadays, plastic bottles or glass bottles are generally used as cosmetics packaging materials. What is the difference between the two? Which one should we choose?


PW-018A (6).jpg


Cosmetic glass bottle


Glass bottles are traditional packaging products, which are bright and transparent, chemically stable, airtight, and easy to form, but heavy and fragile. 80% - 90% of glass packaging containers are glass bottles. The density of soda lime glass bottles is usually 2.5-2.6 g/cm3, which is brittle and has low thermal conductivity. It can be made into emerald green, dark green, light cyan, and amber glass with metal ion colorant.


Advantages of glass packaging container: (1) good chemical stability, non-toxic and tasteless, sanitary and clean, no adverse effects on the packaging; (2) It has good barrier properties and can provide good quality conditions; (3) Good transparency and clear content; (4) Good rigidity, not easy to deform; (5) Good forming processability, can be processed into various shapes; (6) Good temperature resistance, high-temperature sterilization, low-temperature storage; (7) ) Rich raw materials, recyclable and nonpolluting to the environment.


Disadvantages of glass packaging container; (1) High brittleness, easy to fracture; (2) Large weight and high transportation cost; (3) High energy consumption and serious environmental pollution during processing; (4) Poor printing performance.


Plastic cosmetic bottle


Plastic is a kind of polymer synthetic material, which has many kinds.


The advantages are (1) good mechanical performance, lightweight, convenient storage, and transportation, and easy to carry and use. (2) Good barrier property, good sealing property, and high transparency. (3) Good processing performance, which can be made into bottles, caps, films, bags, and composite packaging materials of various sizes. (4) Decorative coloring and printing performance. Drug identification, instructions, signs, and bar codes can be directly inkjet or printed on plastic materials without falling off. (5) Good chemical stability, weak toxicity, health, and safety. The cover of the medicine can be made into a safety cover or a pressure cover, as well as an anti-counterfeiting mark, etc.


The disadvantage of plastic packaging container is that it is easy to carry static electricity, the surface is easy to be polluted, waste materials may cause environmental pollution, and the recycling process is difficult.


It can be seen from the above comparison that both have advantages and disadvantages. However, in general, cosmetic glass bottles have good sealing performance, stable chemical performance, and high-grade materials, which can effectively ensure that the contents will not deteriorate for a long time.