The difference between plastic bottles and glass

Cosmetic 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. Advantages of glass packaging containers:
(1) Good chemical stability, non-toxic, 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. The shortcomings of glass packaging containers: (1) brittle and easy to break; (2) heavy weight and high transportation costs; (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, and 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 contaminated. Discarded materials can cause environmental pollution and are difficult to recycle.

▲ From the above comparison, it can be seen that the two have their own advantages and disadvantages, but on the whole, the cosmetic glass bottle has good sealing performance, stable chemical properties, and high-grade materials, which can effectively ensure that the content does not deteriorate for a long time, and it is a cosmetic packaging Ideal choice.

The biggest problem facing the development of cosmetic plastic bottles

Cosmetic plastic packaging bottles have also received a certain impact in terms of material and recycling. Traditional glass bottles have also begun to return to the mainstream, occupying most of the market space. Plastic bottles are just around the corner if they want to hit back, because plastic bottles have gathered all kinds of plastic bottles. The big advantages have formed the competitiveness of a system, which is also recognized by everyone. As long as you make a slight improvement, it is believed that it will form an important counterattack to the challenger;

Since the emergence of a new material plastic that can completely replace glass bottles, almost all manufacturers have promoted them and replaced them, most of which are used in cosmetic plastic bottles. They have the texture of glass, but have the characteristics of plastic, and inherit the various characteristics of plastic bottles. Big advantage; but now the changes in the packaging bottle market have impacted acrylic. The recycling rate of acrylic cosmetic packaging bottles is relatively low, and its materials are difficult to decompose, which seriously affects the environmental protection of the environment and is a great hazard to nature. ；

If the new material plastic material can be well improved in this respect, I believe it will be more widely used in other fields to maintain sustainable development. At the same time, the new material plastic cosmetic plastic bottle is now the most powerful opponent is PET Bottles, etc. This is a very realistic problem that must be faced;