Why use glass bottles?

Glass bottles are traditional packaging products, which are characterized by: bright and transparent, good chemical stability, airtight, easy to shape, but heavy and easy to break. 80%-90% of glass packaging containers are glass bottles and cans. Usually, the density of soda lime glass bottles is 2.5-2.6g/cm3, which is brittle and has low thermal conductivity. Metal ion colorants can be used to produce emerald green, dark green, light cyan, and amber glass.

The advantages of glass packaging containers: (1) Good chemical stability, non-toxic and tasteless, hygienic and clean, without any adverse effects on the packaging;
(2) Good barrier properties and can provide good quality guarantee conditions;
(3) Good transparency, and the contents are clearly visible;
(4) Good rigidity and not easy to deform;
(5) Good molding processability and can be processed into a variety of shapes;
(6) Good temperature tolerance, high temperature sterilization, and low temperature storage;
(7) The raw materials are abundant, can be recycled and reused, and have no pollution to the environment.

Disadvantages of glass packaging containers:
(1) It is brittle and easy to break;
(2) Heavy weight and high transportation cost;
(3) High energy consumption during processing and serious environmental pollution;
(4) Poor printing performance.

Cosmetic plastic bottles:
Plastic is a high-molecular synthetic material with many types. The advantages are:
(1) Good mechanical properties, light weight, convenient storage and transportation, and easy to carry and use;
(2) Barrier, good sealing and high transparency;
(3) Good processing performance, which can be manufactured into bottles, caps, films, bags and composite packaging materials of various specifications and sizes;
(4) Good decorative coloring and printing performance. Drug labels, instructions, signs, and barcodes can be directly inkjet or printed on plastic materials, and they will not fall off;
(5) Good chemical stability, weak toxicity, hygiene and safety. The cover of medicine can be made into insurance cover or pressure cover, as well as anti-counterfeiting label and so on. The disadvantages of plastic packaging containers are that they are easily charged with static electricity, and the surface is easily polluted. Discarded materials can cause environmental pollution and it is difficult to recycle.

From the above comparison, it can be seen that the two have their own advantages and disadvantages. However, as a whole, the cosmetic glass bottle has good sealing performance, stable chemical properties, and high-grade materials, which can effectively ensure that the contents do not deteriorate for a long time, which can be regarded as cosmetic packaging. Ideal choice!
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