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.
Cosmetic tube field, where is the foothold in the future?
Nowadays, in order to meet the changing needs of consumers, whether it is basic skin care brands or efficacy brands, when most of them launch new series of products, they will launch matching products with instruments, aiming to realize the effective incorporation of brands through high-tech instruments.
2018 Shanghai big Hongqiao fair, Guangzhou LISSON Plastic Co., Ltd. and you will be there
2018 the fair will again be strong in the Shanghai National Convention and Exhibition Center on 5.19-21 day, and Guangzhou LISSON Plastic Co., Ltd. will come to the same time. We will meet the exhibition with such products as non vibratory eye cream import instrument, double roller unique design hose and so on, and then lift the storm event of the whole industry chain!
The importance of cosmetic packaging
Cosmetics are necessaries of our life, but its mission to beautiful life makes it a opportunities which contains huge business. The consumer market should not be ignored, as the competition of cosmetics market is more and more fierce, each tube cosmetics businesses is aim for expanding their product sales, which have struggled to the cosmetics packaging and publicity.
Types and characteristics of cosmetic tube
Tubes are divided into single-layer, double-layer and five-layer tubes, which are different in anti-pressure, anti-penetration and hand feeling. For example, five-layer tube is divided into outer layer, inner layer and two bonding layer, and another barrier layer.
What is the two in one tube and how to fill it in the rear? And the application of the product in skin care
Unlike a single branch tube, the most intuitive tube is a tube in the tube, which looks like a single branch, but can fill two kinds of material at the same time, at the same time extruding. When the material is not used, the material body is separated, and when used, mingling and merging.
What standard should cosmetic tube have in respect of oxygen resistance
Cosmetic tube as a container of cosmetics, do not react with the products is the most important function of tube, cosmetic ingredients are easy to cause the reproduction and growth of bacteria, in addition to its own factors, there is a part of the influencing factors because of the impact of oxygen and water; It can be seen that, the most important factor of cosmetic deterioration is oxygen, all cosmetic tube needs to have very good oxygen resistance and gas resistance (prevent the fragrance molecules in the cosmetics and the effective molecules of cosmetics overflow).
How do small and medium-sized enterprises develop product of cosmetics.
1. Don’t make too many products. There are more and more small and medium-sized cosmetic manufacturers. Their products almost cover all kinds of cosmetics. You can see that there are many products, but in fact, they have many disadvantages. The first one is that the sales volume is not necessarily high. The 80/20 law states that 80% of the benefits of any entity come from 20% of the products, that is, 80% of the products can only contribute 20% of the benefits, which is not economic. The second one is that too many product lines are relatively backward in management, and their own strength is insufficient, enterprises can’t grasp the dynamics of consumers' hearts, so there are a lot of products which are not need by consumers. Third, most companies focus on speculation and bargain hunting. Too many product lines limit the development of an enterprise. It is difficult for consumers to form an understanding of the enterprise without a major product. And it is impossible to find the market position without the c
Development of cosmetics to promote the development of tube packaging
With the rapid development of composite technology of plastics and different materials, composite tube gradually enters a variety of different packaging fields, such as high quality cosmetics, with its excellent water resistance, oxygen resistance and other properties and good convenience. This is changing the traditional concept of plastic composite tube packaging only for simple packaging of low-grade products.