makeup packaging manufacturer-Cosmetic packaging material knowledge: introduction to vacuum bottles

The vacuum bottle in cosmetic packaging materials is a packaging container with a unique design and high-tech concept, which is mainly used to protect the freshness and quality of the product.

A vacuum bottle refers to a container that can isolate gas from outside temperature or isolate external bacteria. Its contents can be completely isolated from the air, preventing the product from oxidizing, deteriorating and breeding bacteria due to exposure to air, and it uses its high-tech concept to enhance product quality. The popular vacuum bottles on the market are composed of a cylinder-shaped ellipsoid container and a piston placed at the bottom. Its design principle is to use the contraction force of the spring to prevent air from entering the bottle and create a vacuum state, and to use atmospheric pressure to push the piston at the bottom of the bottle forward. However, since the spring force and atmospheric pressure cannot give enough force, the piston cannot be too tightly attached to the bottle wall, otherwise the piston will not be able to rise and move forward due to excessive resistance; conversely, if the piston is to move forward easily and material leakage is likely to occur, Therefore, vacuum bottles have very high professional requirements for manufacturers.

The following is a detailed introduction to vacuum bottles:

一、Basic concepts and characteristics of vacuum bottles

• Definition: A vacuum bottle is a container that can isolate gas from outside temperature. It is designed to isolate external bacteria and ensure that the contents are completely isolated from the air.

• Features:

1. Isolate air: Effectively prevent products from oxidizing, deteriorating, and breeding bacteria due to exposure to air.

2. High-tech concept: improve product quality and enhance consumers' trust in product quality.

3. Protect product freshness: Provide a safe packaging environment for products and extend product shelf life.

二、Structure and design principles of vacuum bottles

• Structure: Vacuum bottles usually consist of a cap, a pressure head (or nozzle), a cylindrical or ellipsoid container body, a base, and a piston placed at the bottom of the bottle body. Some vacuum bottles also come with a shoulder holster and vacuum pump.

• Design principle:

1. Vacuum state: The contraction force of the spring is used to form a vacuum state without allowing air to enter the bottle.

2. Atmospheric pressure push: Use atmospheric pressure to push the piston at the bottom of the bottle forward, thereby squeezing out the contents.

3. Balanced design: Since the spring force and atmospheric pressure cannot give enough force, a certain gap needs to be maintained between the piston and the bottle wall to prevent the piston from rising due to excessive resistance. At the same time, this design also needs to avoid material leakage.

三、Application of vacuum bottles in cosmetic packaging

• Advantages:

1. Preservation: Effectively protect the natural ingredients in cosmetics and avoid their failure due to oxidation.

2. Hygiene: Reduce the risk of bacterial contamination and improve product hygiene standards.

3. Precise control: Some vacuum bottles are designed to achieve precise dosage control, improving user experience.

• Limitations: Due to the complex structure and high cost of vacuum bottles, there are currently relatively few cosmetics packaged in vacuum bottles on the market. In addition, vacuum bottles require high professionalism from manufacturers to ensure their normal function.

The introduction of vacuum bottles conforms to the latest development trend of skin care products and can effectively protect the freshness and quality of products. However, due to the complex structure and high cost of vacuum bottles, the use of vacuum bottle packaging is limited to a limited number of categories of products, and cannot be fully rolled out in the market to meet the needs of different levels of skin care product packaging.

While manufacturers attach great importance to the protective and decorative properties of cosmetic packaging materials, they also begin to focus on developing the functionality of skin care product packaging, so that the concepts of "fresh", "natural" and "preservative-free" of the products are worthy of the name.

Vacuum packaging technology is a new concept with absolute advantages. This packaging technology has helped many new brands and new formulas to be successfully launched. Once the vacuum packaging is assembled, from the self-filling packaging to the consumer's use, almost negligible air can enter the container and contaminate or decompose the contents. This is the advantage of vacuum packaging - it provides a safe packaging container for the product, avoiding contact with air, reducing the possibility of changes and oxidation, especially the delicate natural ingredients that are in urgent need of protection, while avoiding the addition of preservatives. Amid the clamor, vacuum packaging is even more important to extend the shelf life of products.

Vacuum packaging products are different from the common straw-type standard pumps or spray pumps. Vacuum packaging uses the principle of dividing the inner cavity to squeeze out the contents. When the inner diaphragm moves upward to the inside of the bottle, a pressure is formed and the contents are in a near 100% vacuum state. Another method of vacuuming is to use a soft vacuum bag placed inside a hard container. The concepts of use of the two are almost the same. The former is widely used and is a very important selling point for the brand because it consumes less resources and can also be recognized as "green and environmentally friendly".

Vacuum packaging also provides precise dosage control. Once the discharge hole and specific vacuum pressure are set, regardless of the shape of the matching pressure head, the dosage will be accurate and quantitative each time. Therefore, the dosage can be adjusted by changing a certain part, from a few microliters or a few milliliters, depending on the needs of the product. Product preservation and hygiene are key values that advocate vacuum packaging. Once the contents are removed, there is no way to put them back into the original vacuum packaging. Since the design principle is to ensure that every use is fresh, safe and worry-free, the internal mechanism of our products has no concerns about spring rust and will not contaminate the contents.