Glass bottle is a traditional packaging product. Its characteristics are: bright and transparent, good chemical stability, airtight, easy to form, but heavy and fragile. 80%-90% of glass packaging containers are glass bottles and jars. Usually, the density of soda-lime glass bottle is 2.5-2.6g/cm3, which is brittle and has low thermal conductivity. Metal ion colorants are used to produce emerald green, dark green, light cyan and amber glass.
Advantages of glass packaging containers: (1) Good chemical stability, non-toxic and tasteless, hygienic and clean, without any adverse effects on packaging;
(2) Good barrier property and can provide good quality assurance conditions;
(3) The transparency is good, and the contents are clearly visible;
(4) Good rigidity, not easy to deform;
(5) Good formability and can be processed into various shapes;
(6) Good temperature resistance, can be sterilized at high temperature and stored at low temperature;
(7) The raw materials are abundant, recyclable and reusable, and have no pollution to the environment.
Disadvantages of glass packaging containers:
(1) Brittle and easy to break;
(2) Heavy weight and high transportation costs;
(3) High energy consumption and serious environmental pollution during processing;
(4) Poor printing performance.
Cosmetic plastic bottle:
Plastic is a kind of polymer synthetic material with various types. The advantage is:
(1) Good mechanical properties, light weight, easy to store and transport, easy to carry and use;
(2) Good barrier property, sealing property and high transparency;
(3) Good processing performance, can be made into bottles, caps, films, bags and composite packaging materials of various specifications and sizes;
(4) Good decorative coloring and printing properties. Drug labels, instruction manuals, signs, and barcodes can be directly inkjet or printed on plastic materials without falling off;
(5) Good chemical stability, weak toxicity, hygienic and safe. The cover of the medicine can be made into a condom or a pressure sleeve, and can also be made into an anti-counterfeiting label, etc. The disadvantage of plastic packaging containers is that they are easily charged with static electricity and the surface is easily polluted. Discarded materials cause environmental pollution and are difficult to recycle.
As can be seen from the above comparison, both have their own advantages and disadvantages. But on the whole, cosmetic glass bottles have good sealing performance, stable chemical properties, and high-grade materials, which can effectively ensure that the contents will not deteriorate for a long time, and can be called cosmetic packaging. Ideal choice!