Three types of cosmetics using cosmetic plastic tubes

Plastic cosmetic tubes are made of PE materials, which are widely used plastic materials. It is suitable for the production of cosmetic tubes. It has the advantages of softness, corrosion resistance and size. It can be used for facial cleansing, eye cream, hand cream and other cosmetics. The tube is durable and reliable, and the price is reasonable. It is neutral in all packaging. The ratio is higher, the following three common tubes are available for everyone to choose from.

First, plastic facial cleanser tube

The reason why the facial cleanser tube is made of plastic is because the plastic tube is easy to squeeze and convenient to use, and the capacity can be customized between 10ml and 500ml.

Second, plastic eye cream tube

Eye cream tubes are high-end cosmetics that have become popular in recent years. Commonly used combinations are plastic PE tubes and electrodeless zinc alloy vibrating heads or three balls.

Third, plastic hand cream tube

Every year since August, the factory began mass production of hand cream tubes. The capacity of hand cream tubes ranged from 30 ml to 80 ml. The most popular ones were 30 ml tubes, which were usually equipped with octagonal caps.

The biggest difference between silk screen and offset printing in cosmetic plastic tube

The biggest difference between silk screen and offset printing for cosmetic plastic tube is:
1. There is no dot on the silk screen, and there is a dot on the offset printing. It can be seen obliquely to the light.
2, silk screen is generally thicker than Luo, look carefully there will be some unsmooth sides, offset printing is relatively regular, horizontal and vertical.
3, all images (such as colorful pictures) can only be offset, not silk screen.
4, common monochrome simple graphics, text, can be silk screen. Some small silk screen prints will have some raw edges and can be seen carefully.

Tube manufacturing process

The process of making cosmetic plastic tube is also called tube extension, and the production equipment is called a pipe drawing machine in the factory. The printed rolling sheet goes through the following steps after entering the machine:

1. Trimming: According to the tube diameter to adjust the feeding width of the sheet so as to match the drawing rod.
2, Shaping: The sheet is flat,you have to use a special mold to turn it into roll shape.
3. High-frequency welding:The high-frequency machine starts to work after the tube sheet enters the position of the high-frequency welding knife. Then weld the front and back of the tube sheet together under a proper temperature. At this time, the tube sheet has become round.
4. Cursor Sensing: Use the light cursor to sense the cut pipe mark printed on the material, the machine can distinguish the length of the tube body of each tube. This step is very important.
5. Tube cutting: The last step is to use the cooperation of the cutter and the cursor sensor to cut the welded tube into a product of uniform length.

Printing introduction of plastic cosmetic tube

Printing introduction of plastic cosmetic tube


There are three processes in sheet printing of cosmetic tubes. Generally, offset printing is first carried out on aluminum-plastic sheet. The biggest advantage of this sheet is that it can print beautiful patterns and achieve photo-quality effects, which is widely recognized by customers. The other is silk screen, this is the same as the silk screen mentioned in the previous article. Although the silk screen is strong and beautiful, the silk screen can’t print the pattern, only the simple text or LOGO can be printed, and the silk screen has the problem of inaccurate positioning. Text in different colors cannot be too close.

Material introduction of cosmetic aluminum-plastic tube

Material introduction of cosmetic aluminum-plastic tube

There are five main materials for cosmetic aluminum-plastic tubes: ordinary silver sheets, ordinary white sheets, high-gloss sheets (also called high-bright sheets), all-plastic transparent sheets, and fully-shaped white sheets. The five kinds of sheets have their own characteristics. The biggest difference is that the printing effect is different. The common point is that the printing effect is very realistic.

In addition, each material has different thicknesses. The most commonly used thickness specifications for cosmetic packaging are: 250μm, 270μm, 300μm, 330μm, 350μm, 400μm, and materials exceeding 400μm. The production process is very demanding, many manufacturers cannot make it. 350μm materials are commonly found in high-end cosmetic packaging, such as facial cleanser, sunscreen, etc. Sheets below 300 μm are generally found in hand cream tubes, toothpaste tubes, and the like.

Plastic cosmetic tube filling process

Plastic cosmetic tube filling process

General working principle: the neatly placed tube to be filled is automatically inserted into the positioning mold by the automatic feeding device from the large-capacity tube silo, and then the positioning mold rotates with the turntable and stays in different positions. On the workstation. Put the paste to be filled into the closable barrel, and accurately and automatically inject it through the plunger type quantitative filling valve directly connected to the barrel, intermittently staying in the tube on the filling station, the large plate Continue to rotate, and the tubes that have been filled with the material are quickly brought to different sealing stations, and the robots of each station immediately seal the tubes. Different filling capacities can be obtained by adjusting the capacity adjustment table. By replacing different manipulators, the two folded sides of the metal pipe such as aluminum pipe, three-folded side, saddle-shaped folded edge and the like can be completed, and the plastic pipe is completely plastic. The heat sealing of the composite pipe works. After the end of the seal, the typewriter automatically prints the date of production, production batch number and other words on the tail of the tube.

Matters needing attention: In the entire filling and sealing process, filling and sealing two stations are two very worthy of attention, because if they are not operated properly, it will directly lead to leakage of the product. When filling, the material body must not pollute the tube wall; the pressure on the equipment at the time of sealing and the temperature parameters should be properly selected. In advance, it is necessary to combine the processing window of the tube material to find and set the optimum state. Otherwise, the surface of the tube will be white, wrinkled, and the false seal will leak.

Plastic cosmetic tube overall structure and its function

Plastic cosmetic tube overall structure and its function

A common plastic cosmetic tube can be divided into a tube tail (A), a tube tube (B), a tube shoulder (C), a tube head (D) and a tube cap (E).

Tube tail (A): It can be made according to different market requirements: straight grain tailing, twill tailing, umbrella tailing, star point sealing, special type sealing, and various shapes. Its main purpose is to increase the shelf display effect. , causing consumer attention, thereby enhancing sales competitiveness. The general production date code is also printed at the end of the tube.

Body (B): The body of the tube for containing lotion, cream.

Plastic tube shoulder (C): The joint part of the hose head and the tube should pay attention to the connection space when making the design artwork, generally 3mm.

Tube head (D): Matches the cover with different shapes and different shapes. The discharge hole of the tube head needs attention, and the pore size is generally selected according to the viscosity of the material to reach the most complete use effect. If the fluidity of the material body is very good, it is necessary to appropriately select the discharge hole of the small pore diameter; on the contrary, if the material body of the paste type is to be appropriately selected, the discharge hole with an enlarged pore diameter is appropriately selected.

Tube cap (E): The tube cap has various shapes and is generally divided into a flat head cover, a round head cover, a high cover, a cover, a super flat cover, a double cover, a spherical cover, a lipstick cover, and a plastic cover. On the processing, bronzing, silver, colored cover, transparent, fuel injection, plating, etc., pointed mouth cover. The hose cover is an injection molded product and the hose is a pull tube.

Nozzle, lotion pump, hand washing pump classification

Nozzle, lotion pump, hand washing pump classification

1, Nozzle: bayonet (half bayonet aluminum, full bayonet aluminum), the screw is plastic, but some are covered with a layer of aluminum cover, a layer of anodized aluminum.

2, lotion pump: divided into vacuum and with dip tube.  A large cover of anodized aluminum can also be placed on the large cover and the head cap of the screw.

3, hand washing pump: the caliber is too large, are screw. A large cover of anodized aluminum can also be placed on the large cover and the head cap of the screw. Generally, the steps are threaded, and the steps are left and right knobs.

The type of plastic bottle packaging

The type of plastic bottle packaging

The type of bottle can be divided into
1. Airless bottle: plastic cap, shoulder cover, vacuum pump, piston. Use by air pressure. The nozzles used have a pointed tip (a full-plastic one is covered with an aluminum layer on the outside), and the flat head of the duckbill is covered with a layer of plastic.

2, lotion bottle: overcap, shoulder sleeve, lotion pump, piston. Mostly equipped with a tube inside. Materials are acrylic outside and PP inside. The cover is ABS material normally.

3, cream jar: there are cover, inner bowl, outer bottle and liner.
External acrylic, internal PP material. The cover is a layer of PP gasket added to the ABS inside the acrylic.

Plastic bottle cap production process

Plastic bottle cap production process

Plastic bottle caps Generally speaking, the production process is roughly divided into two types: compression molding production process and injection molding production process.

The production process of the compression molding cover: the suction machine sucks the mixed material into the barrel of the compression molding machine, and after heating to the semi-melt plasticizing state in the barrel, quantitatively extrudes into the mold cavity, and the upper and lower molds are closed, Compression molding and cooling set, demoulding, and then through the ring cutting, padding, complete the production of compression molding.

The production process of the injection molding cap: the suction machine sucks the mixed material into the barrel of the injection molding machine, and after heating to the molten plastic state in the barrel, it is injected into the mold cavity, and is cooled and shaped in the cavity, and demoulded, and then After the ring is cut and padded, the production of the injection cap is completed.

The main difference between the two

  1. The injection mold is large in volume, and the replacement of a single cavity is troublesome; each cavity of the compression molding is relatively independent and can be replaced separately.
  2. The compression molding cap has no pouring point, so that it has a more beautiful appearance and better printing effect;
  3. Fill all the cavities once at the time of injection molding, and extrude one cap material at a time. The compression molding extrusion pressure is small, and the pressure required for injection molding is relatively high;
  4. the injection molding cover needs to heat the material to the molten flow state, the temperature is about 220 degrees; the compression molding cover only needs to be heated to about 170 degrees, and the energy consumption of the injection molding cover is higher than that of the compression molding cover;
  1. The compression molding processing temperature is lower, the shrinkage amount is small, and the cover size is more accurate.
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