Introduction of cosmetic airless bottle

What is a cosmetic airless bottle? The contents of the airless bottle can be completely isolated from the air to prevent the product from being oxidized and deteriorated due to contact with the air, and to breed bacteria, and to upgrade the product grade with its high-tech concept. The vacuum bottle in the market is composed of a cylinder into an ellipsoid container and a piston placed at the bottom.

1. Brief introduction of development history

Plastic bottle vacuum packaging technology originated in the 1940s. Since the successful application of polyester and polyethylene plastic films to commodity packaging in 1950, vacuum packaging technology has developed rapidly. my country's vacuum packaging was developed in the early 1980s, although it was later than European developed countries, but with the rapid development of my country's vacuum packaging, vacuum packaging technology has continued to improve.

Vacuum packaging technology was first applied to food packaging, and then gradually introduced into the pharmaceutical packaging and cosmetic packaging industries. At the initial stage, the vacuum packaging technology of cosmetics was basically mastered by foreign-funded enterprises. In the late 1990s, my country's cosmetic vacuum packaging began to enter a period of rapid development, and related domestic companies have sprung up like bamboo shoots after a rain.

2. Classification and working principle of vacuum pumps and bottles

The selection of cosmetic packaging basically includes five elements: product compatibility, seal integrity, barrier integrity, appearance appreciation, and physical properties in circulation. The integrity of the seal (that is, the airtightness of the package) is particularly important, because the active ingredients in most cosmetics are extremely volatile compounds, and many natural ingredients are easily discolored and deteriorated when exposed to air. High-end brands choose vacuum packaging not only for aesthetic reasons. Many high-end brands of skin care products have very advanced formulations and have specific requirements for vacuum packaging, so they need to be optimally protected.

The vacuum pump and the bottle body need to be easily evacuated, the liquid distribution amount is uniform, and the internal space is reduced with the reduction of the material body, which isolates the outside air from entering, and the packaging has a beautiful appearance. Consumers can dispense the products in the package at any position and angle, realizing a 360º omni-directional application without dead ends.

In practical applications, the vacuum pump and bottle system can be divided into three main categories.

1. Piston vacuum system

This system is the most widely used one of the existing vacuum pumps and bottle bodies. A piston is installed inside the bottle body to create a closed space between the press head and the material body is stored in this space. Press the vacuum pump to press the head , Promote the vacuum state in the space, use the outside atmospheric pressure to push the piston to move, so as to distribute the material body through the liquid outlet of the vacuum pump. The key point of this technology is the cooperation between the piston and the bottle wall: the piston and the bottle wall should not be too tight or too loose. Too tight can cause the piston to fail to move and make the liquid unable to pump out, and too loose to cause leakage. Therefore, it is limited by changes in packaging shapes, and very regular packaging forms such as round or oval are common.

2. Hose vacuum system

This system is based on the evolution of ordinary hoses, replacing the original cover with a vacuum pump head. By pressing the head of the vacuum pump, the inside of the hose is promoted to generate a vacuum state, and the outer wall of the hose is compressed and deformed by the atmospheric pressure, so that the discharge body is distributed through the discharge hole of the vacuum pump. Because the hose wall is composite stretched by multiple layers of materials, it has a certain strength and requires relatively high suction and tightness of the vacuum pump head.

3. Liner vacuum system

This system can be said to be a combination of the above two, that is, it has a hard appearance and a soft liner. The material of the inner tank can be PE, aluminum bag, etc. The way of distributing and discharging the material is similar to the hose vacuum system.

Different paths lead to the same goal. For the existence of different vacuum system structures, there must be a desirable side. Of course, each structure cannot be seen face to face, and can adapt to the infinitely changing use environment. Before determining the system structure of the vacuum pump and the bottle, relevant preliminary investigations should be done, such as the viscosity of the material, the use environment, the compatibility with the material, and so on.

3. Vacuum pump and bottle manufacturing process and secondary processing

In the production process of vacuum pumps and bottles, in addition to environmental cleanliness requirements, special attention should be paid to the stability and reliability of packaging. It is particularly worth mentioning that, in order for cosmetic packaging to achieve attractive aesthetics, it must undergo secondary processing such as screen printing, thermal transfer, electroplating, and UV spraying. Regardless of the compatibility of the raw materials used in the secondary processing process with the material or plastic raw materials, it is very difficult to control and protect the size and appearance of the parts after the secondary processing. In addition to stable secondary processing process control, it is also necessary to carry out dimensional classification control on plastic materials for different secondary processing processes in the injection molding stage, and adequate protection of packaging by each process.

4. Material classification of vacuum pumps and bottles

There is no specific procedure for the selection of raw materials for the vacuum pump and the bottle body. Mainly in the packaging development stage, the selection of materials is based on the relevant requirements of the customer for the product.

For now, the commonly used plastic raw materials in airless bottles are as follows:

1. Highly transparent materials (PMMA, AS, MS, MABS, PET, PETG, etc.);

2. Semi-permeable material (PP, LDPE, LLDPE, silica gel, etc.);

3. Solid color materials (ABS, HDPE, rubber, etc.).

With the advancement of technology and the improvement of people's living standards, all walks of life attach great importance to environmental protection, and the cosmetic packaging industry is no exception. In recent years, the recyclable PP airless bottle has been very mature. Biodegradable raw materials such as PET are also hot. This kind of raw material has good chemical resistance, but it is very sensitive to mold and molding process, especially for thick wall products, which has certain difficulty in molding.

5. Inspection and quality control of vacuum pumps and bottles

When it comes to the inspection and quality control of vacuum pumps and bottles, in addition to meeting the packaging requirements, the ultimate control is the stability of the packaging, so that consumers can fully enjoy the vacuum system in the process of using the vacuum pump. Various advantages. Nowadays, more and more customers are very interested in the timeliness testing of products, and the requirements for various tests are getting higher and higher. For what, it is for the stability and reliability of the product. It can be said that all the detection and control are gradually extended and developed based on the stable and reliable packaging.

The inspection of vacuum pumps and bottles mainly focuses on three points of function: vacuum test, number of sprays, and spray volume.

In order to achieve stable and reliable results for the vacuum pumps and bottles produced, in addition to safe and reliable hardware facilities, stable production technology and excellent management, the precipitation of vacuum pump technology experience and an attitude of excellence are indispensable.

6. The development trend of vacuum pumps and bottles

At present, vacuum packaging takes the lead in the entire cosmetic packaging market, and the vacuum packaging market is clearly led by vacuum pumps and bottles. Today's vacuum systems can deliver high-end and enhanced value to brands.

In addition to the tendency of vacuum pumps and bottles to be green (there are two ways: one chooses more environmentally friendly raw materials; the other chooses to reduce the number of parts that make up the entire product and minimize the weight of the packaging), there are also some others on the market New development trend.

In terms of multi-purpose, cosmetics and vacuum pump skin care products such as double-layer bottles and double-ended bottles are rapidly emerging, such as double-ended bottles (vacuum pump at one end, roller beads at the other end, powder box, etc.).

In terms of appearance and shape, more concise and generous design will become the mainstream. Nowadays, cylindrical products are the most on the market, followed by oval and square products, and there are not many odd-shaped products. It shows that consumers still agree with simple and generous products. Of course, in order for brand companies to cater to the needs of the brand, it is another matter.

In terms of packaging texture, the design of single-layer airless bottles has gradually changed to double-layer bottles to highlight the layered and high-end packaging. For example, the outer bottle body of transparent material is matched with the inner bottle of solid color, and appropriate secondary processing and modification are performed on the two bottles respectively. It is also true that the outer bottle of solid color is matched with the inner bottle of transparent material to give full play to the secondary processing performance of the outer bottle, and the inner beauty is presented by opening the window of the outer bottle.

In order to attract more consumers and win the attention of more consumers, rich and changeable secondary processing technology will become the first choice. Proper packaging will glow with unique charm. The secondary processing technology of Hangzhou YAKIN packaging will also usher in another technological revolution and innovation!