Monthly Archives - May 2019

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.

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