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How to choose plastic hose

How to choose plastic hose

  • Categories:Company news
  • Author:
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  • Time of issue:2019-08-05 12:00
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(Summary description)In the cosmetics industry, packaging quality is the second life of the product. According to the characteristics of the cosmetics and the sales situation, the selection of a suitable plastic hose as a package can make the cosmetics more attractive under the high-quality packaging.

How to choose plastic hose

(Summary description)In the cosmetics industry, packaging quality is the second life of the product. According to the characteristics of the cosmetics and the sales situation, the selection of a suitable plastic hose as a package can make the cosmetics more attractive under the high-quality packaging.

  • Categories:Company news
  • Author:
  • Origin:
  • Time of issue:2019-08-05 12:00
  • Views:
Information

In the cosmetics industry, packaging quality is the second life of the product. According to the characteristics of the cosmetics and the sales situation, the selection of a suitable plastic hose as a package can make the cosmetics more attractive under the high-quality packaging..

1. Health and safety

Cosmetics are in direct contact with the human body, which imposes high hygiene and safety requirements on their packaging. For plastic hoses, the safety of raw materials (the raw materials must comply with relevant laws and regulations, such as FDA, SGS certification, etc.), production process, production environment, etc., should be controlled to ensure the safety and safety of the cosmetics..

2. Protective

The packaging material should have sufficient mechanical strength, a certain degree of barrier properties, chemical resistance, weather resistance, etc., to prevent the quality of cosmetics in the process of filling, storage and transportation.

(1) Mechanical properties. The main function of packaging is to use its mechanical properties to ensure that the contents are not damaged. The mechanical properties of plastic hoses for cosmetic packaging, such as pressure resistance, impact resistance, flexural strength, etc., are mainly determined according to the nature of the packaged product, packaging machinery, storage and transportation requirements. In general, the plastic hose must have a certain degree of stiffness to ensure that the overall shape of the product is intact; at the same time, it needs to have better resilience to ensure that it can return to its original shape after being squeezed. However, under the same material composition and the same thickness, stiffness and resilience are a pair of contradictions, and only by taking care of both can meet the needs of customers

(2) Barrier performance. Commonly used barrier materials for plastic packaging for cosmetics packaging include aluminum foil, EVOH, oxide-coated PET and nylon. The barrier properties vary depending on the material and thickness selected. For example, aluminum foil has high barrier property. When the thickness of aluminum foil is above 25μm, the barrier property can reach 100%; the barrier property of EVOH to oxygen is proportional to its thickness, and the oxygen permeability of 15μm thick EVOH is about 0.3-0.4cc/m2. 24h (mocon detection method); the oxygen permeability of PET having an oxide coating is generally 0.2 to 1.0 cc / m 2 · 24 h (mocon detection method). Therefore, materials with different barrier properties should be selected according to the requirements of the packaged cosmetics. In addition, consideration should be given to the interaction of the fragrance with the packaging material, such as the absorption of essential oils by polyolefin materials, where a protective coating can be added between the aluminum foil and the polyolefin material.

3) Chemical resistance and weather resistance. The material selected for the plastic hose for cosmetic packaging shall be resistant to chemical corrosion of the contents, including oil resistance, grease resistance, acid resistance, etc. The base resin may be preferably used according to actual conditions and needs, such as HDPE. Better chemical resistance than LDPE.

The weather resistance of plastic hoses is related to the temperature resistance, dimensional stability and environmental stress cracking resistance of the materials used. Only the short-term or long-term performance of plastic hoses can guarantee the quality and safety of cosmetics. For example, some cosmetics are suitable for use in cold winters. If plastic hoses use conventional materials such as PP, there may be a series of problems such as drop test but explosion, etc. This is because the glass transition temperature of PP is around -10 °C. It is brittle and brittle at low temperatures. At this point, it is necessary to adjust the formulation structure of the plastic hose, and use the toughening material to improve the impact strength of the plastic hose.

3. Operational

In order to facilitate printing and packaging operations and to adapt to mechanized operation, plastic hoses for cosmetic packaging should have good printability, heat sealing properties and packaging machine suitability.

(1) Printability. From a printing standpoint, aluminum-plastic and all-plastic composite hoses have advantages over plastic co-extruded hoses. Because the aluminum-plastic and all-plastic composite hoses are made of different materials through the extrusion process, the tubes are cut after the cutting and printing process, or the film after the printing is subjected to the extrusion and slitting process. After the tube is re-made, the plastic co-extrusion hose is printed after the tube is first produced, which will inevitably lead to the complexity of the printing process.

(2) Heat sealing performance. The heat sealing performance includes two indexes of sealing temperature and heat sealing strength. In particular, some temperature-sensitive cosmetics require that the temperature at the end of the tube seal be not too high. At this time, the hot cover can be made of some low-temperature heat-sealing material to ensure that the seal is sealed under low temperature conditions that do not affect the quality of the cosmetic. When the cosmetic is filled, the contents may contaminate the seal, and the plastic hose processed by the general material cannot be well sealed, but if the hot cover is made of anti-pollution material, the problem can be effectively solved.

4. Economics

In aluminum-plastic composite hoses, aluminum foil has the highest unit price, and controlling the thickness of the aluminum foil can effectively control the cost of the hose. Therefore, under the premise of ensuring good product performance, the use of thinner aluminum foil, reducing the loss in the production process, and using simple packaging as much as possible can reduce the cost of the aluminum-plastic composite hose.

At present, the cost of the all-plastic composite hose is relatively high, and the thinning thickness is one of its future development directions without affecting various performances. As a result, highly stiff materials such as PP, etc., will increasingly be used in all-plastic composite hoses.

In order to reduce the printing cost of plastic coextrusion hoses and to take advantage of its appearance (edgeless sealing), a new hose structure has been formed. The structure is a transparent plastic co-extrusion hose on the outside of the printed composite hose through a special process, so that the printed pattern inside is clearly presented to the consumer while maintaining the excellent quality of the plastic co-extrusion hose. Feel..

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