Primary Slitter Manufacturers Introduces The Characteristics Of Different Types Of Slitters

The slitting machine is composed of an unwinding mechanism, a cutting mechanism, a winding mechanism, various functional rollers, and a tension control rectification control and detection device; its working principle is: the metalized film raw material released from the unwinding mechanism is flattened. The detection roller, energizing roller, and deviation correction system enter the cutting mechanism. After the raw materials are slit, they are respectively wound into standard film rolls by the winding mechanism. Below, Primary Slitter Manufacturers introduces the characteristics of different categories of slitters:

1. Flat knife slitting is like a razor, fixing a single-sided blade or double-sided blade on a fixed knife holder, and dropping the knife during the material running process so that the knife cuts the material longitudinally to achieve the purpose of slitting. There are two ways of razor slitting:

One is grooving and slitting; the other is suspended slitting.

①Grooving and slitting are when the material is running on the grooved roller, drop the cutter in the groove of the grooved roller, and cut the material longitudinally. At this time, the material has a certain wrap angle on the grooved roller, and it is not easy to drift. This kind of slitting method is often used when slitting cast PP films or films with narrow margins, which can improve the slitting efficiency. But for suspended slitting, its disadvantage is that it is more inconvenient to set the knife.

②Hanging slitting is when the material passes between the two rollers, the razor falls to cut the material longitudinally. At this time, the material is in a relatively unstable state, so the slitting accuracy is slightly worse than that of die slitting. The cutting method is convenient for knife settings and easy to operate.

The flat cutter is mainly suitable for cutting very thin plastic films and composite films.

2. Circular knife slitting can be divided into tangential slitting and non-tangent slitting.

The tangential slitting is when the material is cut from the tangential direction of the upper and lower disc knives. This kind of slitting is more convenient for knives. The upper and lower disc knives can be adjusted directly according to the requirements of the slitting width. Its disadvantage is that the material is easy to drift at the slitting point, so the accuracy is not high, and it is generally not used now. Non-tangential slitting means that the material and the lower disc knife have a certain wrapping angle, and the lower disc knife falls to cut the material. This cutting method can make the material less prone to drift, and the cutting precision is high. However, it is not very convenient to adjust the knife. When installing the lower disc knife, the entire shaft must be removed. Circular knife slitting is suitable for slitting thicker composite films and papers.

3. It is not common in domestic slitting machines. It is mainly composed of a bottom roller that is synchronized with the material speed and has a certain angle with the material and a pneumatic knife that is easy to adjust. This cutting method can not only cut relatively thin plastic films but also relatively thick paper, non-woven fabrics, etc. It is a more convenient way of cutting. It is a development direction of the slitting method of the slitting machine. This process of slitting should be taken seriously and must not be taken lightly.