What is the coloring process of stretch wrap film from manufacturers

Stretch wrap film from stretch wrap manufacturers is a packaging method formed by mechanically stretching or manually stretching and winding the film at room temperature. Stretch wrap film from stretch wrap manufacturers provides tight packaging for products, making it easy to transport and store. Stretch wrap film is generally produced using imported resin and advanced flow diffraction film extrusion technology. In the production process of stretch wrap film manufacturers, coloring and color matching are very important processes. Next, according to the requirements of the stretch wrap film manufacturer, understand the coloring process of the wound film.
There are two main ways for stretch wrap film manufacturers to color stretch wrap films:
1. Instrument color matching refers to the method of using instruments to match the color of rolled film. It uses measuring instruments such as photometers to replace the functions of the human eye and brain. Through computer simulation, the testing and collection process of color ratio was completed without actually mixing plastics.
2. Visual color matching. This method requires mastering the general rules of coloring agents in mixed coloring, having a clear understanding of the hue, color, flowability, heat resistance, chemical stability and other properties of the coloring agents used, and also accumulating many representative plastics.
The automatic optical inspection system has become an important monitoring method to ensure 100% qualification of stretch wrap film. The new technology format checking technique uses line scanning cameras to identify defects on formats or paper. The images are captured by high-resolution digital cameras, and high contrast and low contrast defects are reliably detected by dedicated optical modules. Then, the identification software identifies the defects of the stretch packaging film and divides them into gel, black spot, dirt, wrinkles, bubbles, etc. In summary, the online detection process of stretch wrap film is very important. Wrap the film around the tray to wrap all objects on the tray, and then use two heat clamps to heat seal the film at both ends together. This is an early form of use, and more packaging forms have been developed. Full width packaging requires the width of the winding film to be sufficient to cover the tray, and the tray shape is regular, so there are usage requirements. In the process of physical packaging, it can be divided into manual packaging and tray mechanical packaging. Below, the stretch wrapping film manufacturer will explain in detail the principle of wrapping film in packaging:
1. The appropriate wrapping film thickness is 17-35 μ M for manual packaging, which is a relatively simple packaging method. The rolled film is installed on the rack or held by hand, rotated or wrapped around the tray. Mainly used for repackaging damaged pallets and packaging with regular pallets.
2. The appropriate wrapping film thickness is 15-20 μ m; Tray mechanical packaging is one of the more common and widespread forms of mechanical packaging. The tray rotates or the film rotates around the tray, and the wound film is fixed on the bracket and can move up and down.
3. The appropriate thickness of the wrapping film is about 15-25 μ m; Horizontal mechanical packaging is different from other packaging. It rotates around the object by wrapping the film.