The difference between hard glass and soft glass
Rigid glass (also known as high borosilicate glass) material glass SiO (about %), sodium borate (%). High temperature resistance, high pressure, corrosion resistance, high mechanical strength, good thermal conductivity, resistance to temperature changes , Operating temperature Soft glass (also known as ordinary glass) material glass can be divided into soda lime glass (SiO, CaO, NaO) and potassium glass (SiO, CaO, KO, AlO, BO) according to the composition. In terms of corrosion resistance, hardness, In terms of transparency and devitrification, potassium glass is better than soda glass, but it is worse in terms of thermal stability. It has a low softening temperature, strong alkali resistance, and is not easy to devitrify. It is suitable for lamp flame processing, but because it cannot withstand excessive temperature differences, It is often used to make instruments that are not directly heated. Such as burettes, pipettes, measuring cylinders, etc., because their expansion coefficient is close to Pt, they can be sealed with Pt wire. Identification method of glass tube material Classification Tube end color Heating reaction Performance characteristics Purpose Soft glass Turquoise It will soften soon after heating. If it is aluminum glass, it will turn black at the same time, and the flame of soda glass will be slightly yellow. Soft glass contains soluble silicate, has poor chemical resistance to corrosion, has a strong adsorption force, large thermal expansion coefficient, and is easy to break due to sudden changes in temperature. Utensils made of soft glass are generally only used for diluting acid-base solutions and titrating. Such as: volumetric flask Hard glass yellow or white Heating for a short period of time does not soften, heating for a long time can be softened, and it will become hard after leaving the flame. Rigid glass contains less soluble impurities and has a small thermal expansion coefficient, which is convenient for heat treatment. Rigid glassware is suitable for general chemical analysis of major elements. Commonly used are borosilicate glass, such as: medical penicillin bottle
The rise of the beauty economy has caused cosmetic brands to pay more and more attention to appearance packaging.
●Design team: cosmetics packaging design
●Project background: With the improvement of living standards, cosmetics, a fashionable consumer product, has gradually become the mainstream product in people's lives.
It is the nature of every woman to love beauty.
The cosmetics market has gradually improved in recent years
Now cosmetics are no longer exclusively for women
Cosmetic packaging is also gradually out of a more diversified style
Want to know the latest cosmetic packaging design trends?
You'll understand after reading this article!
The most potential petty bourgeoisie brand-simple style makes me feel relaxed and happy!
Cosmetic packaging is a subdivision field that has grown rapidly in recent yea
Cosmetics are commodities that every woman uses.
Simplified packaging design style is a design direction recognized by young people and modern culture.
Consumer trends are the driving force of packaging innovation, and big data analysis is to combine trend insights with packaging innovation.
In order to attract consumers, in recent years, businesses have put more and more effort on cosmetic packaging, and various novel and exquisite packaging have emerged one after another.
In addition to the production date, manufacturer, etc., what are the secrets of the neglected graphic symbols, words, and numbers on the outer packaging of cosmetics?
In addition to the most common barcodes, there are some unobtrusive small icons on cosmetic packaging that also represent very important information.
This common small open can logo means the shelf life after opening.
Research and Markets released the 2020 Packaging Innovation Trends Report-focusing on the latest trends in packaging innovation and the shift to more sustainable options.
Analysts said: 'Sustainability has become an important factor in today's consumers' purchasing decisions.