Surface gloss and technology of plastic cosmetic tube

2021-11-01

Wholesale cosmetic tube manufacturer should first improve the surface glossiness of plastic cosmetic tubes, called brightening; secondly, reduce the surface glossiness of plastic cosmetic tubes, also called extinction. Brightening of plastic cosmetic tube is to improve the surface gloss or finish of plastic cosmetic tube. In addition to the reasonable selection of raw materials, the specific methods include adding brightening method, blending brightening method, shape control brightening method, and molding without finishing. Control, secondary processing brightness enhancement method and surface coating brightness enhancement method, etc.

The selection of plastic raw materials is the basic factor to improve the surface finish of the plastic cosmetic tube. If the raw materials are selected well, it is easy to improve the gloss; on the contrary, it is more difficult. Now, with the development of plastic cosmetic tube recycling technology, more and more waste plastic cosmetic tubes have become a resource for many businesses to recycle. Plastic cosmetic tube recycling machines have also appeared in some large supermarkets, subway stations and other places where people are concentrated. People's awareness of plastic cosmetic tube recycling has also become popular. More and more cosmetic tube manufacturers began to promote PCR cosmetic tube.

The selection of raw materials for plastic cosmetic tubes has been tested and approved by the cosmetic tube quality certification organization; on the other hand, in terms of materials, plastic cosmetic tubes are mainly made of plastic. The outstanding feature of the plastic cosmetic tubes produced by the cosmetic tube manufacturer is weight. Lightweight and not afraid of falling, plastic cosmetic tubes are widely used in various fields by virtue of their unique competitive advantages. For example, in the field, plastic cosmetic tubes are the main packaging equipment for cosmetics, especially solid or powder medicines. Plastic cosmetic tubes are mostly used in the form of packaging, which can not only stabilize the cosmetics, but also reduce the cost of use.

The development of the packaging industry in China, especially plastic packaging, is not unfamiliar with how to mention plastic cosmetic tubes. In our daily life, we can see the use of plastic cosmetic tubes. For example, beverages, condiments, etc. are all made of plastic. The cosmetic tube is packaged. Plastic cosmetic tube has a strong competitive advantage in the choice of product packaging materials. This is mainly reflected in the following aspects:

If you look closely, we sometimes find that some plastic cosmetic tubes have poor gloss and contain impurities. Yes, what you see is a plastic cosmetic tube made of secondary materials. Many plastic cosmetic tubes on the market are recycled, reprocessed, and then re-entered into the market. If we generally do not pay attention to it, we will not distinguish between the quality and the harm to human health. The so-called secondary material production plastic cosmetic tube is a plastic cosmetic tube produced from raw materials made of waste plastics that have not been strictly recycled and cleaned.

Some plastic cosmetic tube suppliers use it or mix it with new materials in order to reduce costs. If these plastic cosmetic tubes are circulated in the cosmetic packaging field, they will be more harmful to people if they come into direct contact with cosmetics. At the same time, he also created unfair competition for manufacturers who use new materials to produce plastic cosmetic tubes, and the production of these secondary materials often creates harsh environmental problems.

The processing principle of this technology is to first form a core shape that constitutes a cavity, and then use the core shape as an insert for injection molding. Under the heating action of the injection molded part, the core shape is melted and flowed out, thereby forming a cavity. The more important point for Cosmetic tube supplier to use this technology is to master the melting point of core materials and plastic parts. Generally, the core material can be general-purpose plastics, thermoplastic elastomers, or low-melting metals such as lead, tin, etc., according to specific conditions. Appearance quality: including completeness, color and gloss; size and relative position: in line with product drawings and assembly requirements; mechanical properties related to the use, chemical properties: such as tensile test, impact test, environmental resistance test, etc. Reasons for product defects: plastic problems: including plastic quality ingredients and baking materials; adjustment problems: including injection pressure, temperature and cycle, etc.; mold problems: including mold design, manufacturing and wear.

There are two commonly used production processes for plastic cosmetic tubes:

1. It is an extrusion blowing process, that is, the plastic raw materials are added to the extruder, the molten parison is extruded by heating, melting and plasticizing, and then placed in the cosmetic tube mold for inflation molding. After cooling and shaping, it is taken out of the mold, and the waste edges are repaired. After the finished product. This process is mainly used to produce polyethylene and polyvinyl chloride plastic cosmetic tubes.

2. It is an injection stretch-blow process, that is, the plastic raw material is injected into a tubular parison through an injection molding machine, and then placed in a cosmetic tube mold for stretch-blow injection molding, and the finished product is cooled.

For plastic cosmetic tubes on the market, if we generally do not pay attention to them, we will not distinguish between the quality of them and whether they are harmful to human health. But if you look closely, we sometimes find that some plastic cosmetic tubes have poor gloss and contain impurities. That's right, what you see is a plastic cosmetic tube made of secondary materials. In order to prevent more people from being affected, please pay attention accordingly!

1. System. Auditing cosmetic tube suppliers has become an indispensable part of purchasing liquid plastic cosmetic tubes. Through the audit, all the software and hardware facilities, technical equipment and quality comprehensive level of the cosmetic tube factory can be correctly assessed.

2. The tightness and water vapor permeability of the bottle body and cap. Tightness and water vapor permeability are two important technical indicators of liquid plastic cosmetic tubes, and they have an important influence on the stability of the packaged product.

3. Quality standards for liquid plastic cosmetic tube products. The pros and cons of the product quality can be analyzed and judged from the product quality standards of the cosmetic tube factory.

Plastic cosmetic tube & bottle packaging is becoming more and more sophisticated. In the plastic cosmetic tube packaging market, skin care products tube is a relatively special field. Compared with other types of plastic cosmetic tubes, the production threshold is generally not high. Because skin care products tubes involve the special nature of packaging products, they have corresponding requirements in all aspects of technical funds for manufacturers engaged in skin care products, and there are also corresponding thresholds. , It is not possible for any manufacturer to enter, especially packaging products such as fluorinated bottles and barrier bottles, which have very high parameter requirements for skin care products. Serious consequences.

It is the special nature of skin care product tube packaging that it is necessary to formulate strict market access standards for skin care product tube packaging products, and make detailed formulations for various fields involved in chemical products. At the same time, it has formulated entry thresholds for manufacturers engaged in the production of skin care products, and strengthened product supervision and monitoring.

Plastic cosmetic tubes are mainly made of materials such as polyethylene or polypropylene and added with a variety of solvents. Cream is mostly a plastic cosmetic tube, but once the polyethylene is corroded by high temperature or acid, it will slowly dissolve and release the solvent, which will cause harm to the human body. Plastic cosmetic tubes can melt spinning, dissolve unsaturated resins, or re-granulate, but if you make transparent products, you can easily find particles with poor transparency and poor light transmission. The molding processing methods mainly include injection molding, extrusion molding, thermoforming, hollow molding, laminate molding, compression molding, transfer molding, foam molding, pouring molding, insert molding, sealing molding, etc., among which injection molding is mainly used . In recent years, some plastic cosmetic tube processing and new equipment have been widely used in home appliance plastic cosmetic tube molding, such as injection molding, molding technology, melt core injection molding technology, gas-assisted/water-assisted injection molding technology, electromagnetic dynamic injection molding technology, and film-coated injection molding Molding technology, etc.