The "curled" paper refers to the wrinkles that occur in the paper perpendicular to the paper feed direction. Looking in the direction of paper feeding, both sides of the paper or finished product curl up. As the speed of modern packaging machinery is getting faster and faster, the demand ...READING MORE...
5. Floating color, color layering Due to the difference in size, shape, density, dispersibility, and cohesion of the pigments in the ink, the pigments on the surface and the underlying layer of the ink film are unevenly distributed, resulting in a phenomenon in which the hue of each layer is diff ...READING MORE...
A sheet-fed offset rotary printing press includes a plate cylinder, a blanket cylinder having the same size as the plate cylinder, an impression cylinder, a plate making device, four inking units, and four inks Roller sleeve on/off device and roller sleeve on/off device. At least one plate is moun ...READING MORE...
The device for transporting the sheets through the printing machine has a roller with grippers arranged in the channels, which hold the sheets on the front edge of the sheet; there is a chain conveyor, the chain The conveyor has grippers fixed on the chain, these grippers receiving the front edge ...READING MORE...
Inflatable bag sealing valve is composed of upper and lower air valve membranes, and a plurality of heat-resisting printing plates are arranged in the middle. The air valve is composed of an upper valve film and a lower valve film, and is clamped at an appropriate length. The aforementioned upper ...READING MORE...
Introduction to printing paper In the first volume of the “China Paper Yearbook†published in 1987, a catalogue of China's domestic machine paper and board varieties was initially sorted out. A total of 543 paper names were included. According to their main purposes, paper and pap ...READING MORE...
The utility model relates to a filling material for packaging precision components (such as a semiconductor wafer), and more particularly to a packaging platform with an adjustable thickness for filling the remaining space in a container. In summary, the utility model is a packaging platform with ...READING MORE...