Pet plastic bottle production in the analysis of the causes of bubbles and vacuum bubble
Melt pet plastic bottles in the process of mold filling by gas interference, often form some hole or air bubbles on the surface of products. Now a summary about a bubble. Technological factors: 1, the speed is too fast, make the molten plastic decomposition by big shearing action, produce gas. 2, product cooling fast, uneven contraction, especially the products for the larger wall thickness, the surface cooling speed is faster than near the center, in the process of cooling, near the center of plastic shrink and expansion to the appearance, the center filling, vacuum bubble. 3, pressure and pressure is insufficient, make molten material and cavity surface is not close to, is not conducive to air discharge. 4, back pressure, back pressure control of the speed of the screw back, back pressure is small, the speed of the screw back will be quick, easy to produce feed shortage, material into the air, not from the inlet discharge, produce a large number of bubbles. Raw materials have water material factors. Die mold factors trapped gas, should maintain the mold or increase the exhaust slot.
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.