Why is the bottom of the plastic bottle recessed


The bottom of the plastic bottle is recessed to allow the beverage bottle to stand firmer. If it is a flat-bottomed plastic bottle, it is easily deformed due to the hydraulic pressure, and it usually protrudes outward, so that the beverage bottle is not stable. However, if the bottom is designed in the shape of a groove, the stress area of ​​the bottom is increased, and the pressure is reduced, so that it is not easy to deform. And even if the entire bottom does not touch the table, as long as the force is uniform, it can stand very stably. The stability of the five-claw shape is very good, so a large part of the common plastic bottles are made into a five-claw shape. Plastic bottles are usually only disposable. If you use it to hold hot water, you will notice that it will deform and either bulge or shrink. In addition to becoming strangely shaped and difficult to stand, plastic products also release toxic substances at high temperatures.

Common packaging box structure

Common packaging box structure are divided into five types: 1. Portable hand bag, because some products are large in size. In order to make it easier for customers to carry, the handles will be added to the packaging box and can be folded or hidden. 2. Heaven and earth cover boxes, they are differently round shape with tangent lines. You can open the cover to see the goods, as well as the characters and trademarks. It is easy to open and easy to take out the goods and display as well as promote the products. 3. Special-shaped packaging color boxes have various shapes such as rhombus, octagon, hexagon, circle, triangle, etc. This packaging color box uses arcs, straight lines to cut and alternate the combination of faces to produce packaging color boxes. 4. Window-type color boxes, which are divided into partial and multi-faceted windows, also use transparent plastic film, no plastic film, PET film, mainly showing the goods for consumers to buy. 5. Special box type, some add an additional accessory, some open the gap, some open the hole add a quality product, mainly based on the different uses of different products for the corresponding design. There are many types of packaging color boxes on the market, with different shapes, and the unique structure has an indispensable role in promoting product packaging promotion and attracting consumer purchases.

Why choose a PET bottle

Why choose a PET bottle

In recent years, we have found more and more cosmetic brands on the market using pet lotion bottles. So why is pet lotion packaging so popular? First of all, the glass or acrylic lotion bottle is too heavy, and the weight is not conducive to carrying out. As more young people travel, the pet lotion bottle package is more convenient to carry. It is also more portable. Secondly, with the rise of online shopping, lotion bottles often break or have other damaged conditions during transportation, while pet lotion bottles are shatter-resistant, and collisions and extrusions during transportation will not cause problems such as breakage and leakage. Once again, pet lotion bottle packaging is relatively simple to produce and low in cost, so it is also popular.

How to select a good PET bottle?The answer is choose a new material. Some plastic blow molding manufacturers will use the secondary material to process the pet lotion bottle, which obviously affects the quality of the emulsion. Therefore, special attention should be paid to the raw materials produced by the lotion bottle manufacturers. Besides, price is also important, the lotion bottles are used in large quantities, so you need to control the cost as much as possible In addition, the stability of the supply of the emulsion bottle packaging manufacturers, and the timely delivery is also crucial for the late stage of the emulsion manufacturer.

Which is more popular between plastic bottles and facial cleansing tubes?

Which is more popular between plastic bottles and facial cleansing tubes?

When it comes to facial cleanser, it is widely used by both men and women. In this context, the market demand for facial cleanser bottles continues to grow. There are several major reasons. First, the demand for facial cleanser market continues to grow, and people are increasingly aware of the importance of facial cleanser for skin care, which naturally led to the growth of the facial cleanser market. Second, the competition in the facial cleanser market is becoming increasingly fierce. More and more cosmetic companies are entering the facial cleanser sector. This has also intensified the competition in the facial cleanser market on the other hand, and has also led to an increase in the demand for facial cleanser bottles.

At present, there are mainly two types of packaging for facial cleansing products, they are plastic bottles and facial cleansing tubes. So, which one is more practical? First of all, the facial cleanser tube is easy to squeeze, and the facial cleanser is more in the form of lotion. In contrast, the facial cleanser is not squeezed. Secondly, the cost of the facial cleanser tube is relatively lower than that of the facial cleanser bottle, and the cost of the facial cleanser bottle is relatively higher. Once again, facial cleanser bottles are more upscale in appearance, and facial cleanser tube give people a cheaper feel.

Which one is more practical,It still needs to be treated differently. It should be distinguished according to actual usage.

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.

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