What is characteristics of Cosmetic plastic hose

Cosmetic plastic hose characteristics

At present, the commonly used plastic hoses in cosmetic packaging mainly include aluminum-plastic composite hoses, all-plastic composite hoses and plastic co-extruded hoses, which can meet various requirements of cosmetic packaging, such as hygiene and barrier properties.

1. Aluminum-plastic composite hose

The aluminum-plastic composite hose is a kind of packaging container made of aluminum foil and plastic film through a co-extrusion composite process, and then processed into a tube by a special pipe-making machine. Its typical structure is PE/PE+EAA/AL/PE +EAA/PE. Aluminum-plastic composite hoses are mainly used for packaging cosmetics that require high hygiene and barrier properties. The barrier layer is generally aluminum foil, and its barrier property depends on the pinhole of the aluminum foil. With the continuous improvement of technology, the thickness of the aluminum foil barrier layer in the aluminum-plastic composite hose has been reduced from the traditional 40μm to 12μm, or even 9μm, which greatly saves resources.

The aluminum-plastic composite hose has the following advantages during use.

(1) High barrier properties. Aluminum foil has barrier properties such as light barrier, oxygen barrier, and water barrier. On the one hand, it can prevent foreign substances from intruding into the cosmetics and prevent the cosmetics from oxidizing and deteriorating. At the same time, they can also prevent the moisture or fragrance in the cosmetics. The ingredients diffuse to the outside through the hose to ensure the quality of the cosmetics.

(2) Low cost. To achieve the same barrier properties, aluminum-plastic composite hoses use less materials, lower cost, and are more economical than all-plastic composite hoses and plastic co-extruded hoses.

2. All-plastic composite hose

All-plastic composite hoses are made of plastic components, and are divided into two types: all-plastic non-barrier composite hoses and all-plastic barrier composite hoses. The all-plastic non-barrier composite hose is generally used for the packaging of low-grade and fast-consuming cosmetics; the all-plastic barrier composite hose is usually used for the packaging of medium and low-grade cosmetics due to the side seams in the pipe manufacturing. The barrier layer can contain EVOH, PVDC, and oxide coatings. Multi-layer composite materials such as PET. The typical structure of all-plastic barrier composite hose is PE/PE/EVOH/PE/PE.

The advantages of all-plastic composite hose are as follows:

Environmental protection. Compared with aluminum-plastic composite hoses, all-plastic composite hoses use economical and easy-to-recycle all-plastic sheets, which can reduce environmental pollution from packaging waste. The recycled all-plastic composite hoses can be produced after reprocessing. Relatively low-end products.

(2) Diversified colors. According to the characteristics of cosmetics and different consumer needs, the all-plastic composite hose can be made into different colors, such as colorless and transparent, color transparent, color opaque, etc., which brings strong visual enjoyment to consumers. In particular, the transparent all-plastic composite hose can clearly see the color state of the contents, giving a strong visual impact, and greatly promoting consumers' desire to buy.

(3) Good resilience: Compared with aluminum-plastic composite hoses, all-plastic composite hoses have better resilience, which ensures that after squeezing cosmetics, the hose can quickly return to its original shape and always maintain a beautiful, The appearance of the rules. This is very important for cosmetic packaging.

3. Plastic co-extrusion hose

The plastic co-extrusion hose utilizes co-extrusion technology to co-extrude materials of different properties and types together to form a one-time molding. Plastic co-extrusion hoses are divided into single-layer extrusion hoses and multi-layer co-extrusion hoses. The former is mainly used for fast-consuming cosmetics (such as hand cream, etc.) that require high appearance and low actual performance requirements. Packaging, the latter is mainly used for the packaging of high-end cosmetics.

The main advantages of plastic co-extrusion hoses are as follows:

(1) Because there is no side seal, the appearance effect is better than that of composite hose, which is necessary for high-end cosmetic hose packaging.

(2) According to the different extrusion dies, various shapes of extruded hoses, such as oval, square, etc., can be produced to meet the needs of different consumers.

4. Analysis of the shortcomings of various plastic hoses

The three plastic hoses for cosmetic packaging mentioned above all have their own shortcomings.

(1) Due to the use of aluminum foil, aluminum-plastic composite hoses have many disadvantages, such as invisible content, poor environmental protection, poor resilience, lower composite strength than all-plastic composite hoses, and easy delamination.

(2) The barrier properties of all-plastic composite hoses mainly depend on the type and thickness of the barrier layer material. Taking the all-plastic composite hose with EVOH as the barrier layer material as an example, to achieve the same barrier properties and stiffness, its cost It is about 20% to 30% higher than aluminum-plastic composite hose. For a long period of time in the future, this will become the main factor restricting the full replacement of aluminum-plastic composite hoses by all-plastic composite hoses.

(3) The production and processing technology of plastic co-extruded hose is generally to make the tube first and then print. For the printing process, the efficiency is low, the process is complicated, and the process is difficult.