In Flexible Packaging, Printing, Plastic Film Processing And Other Industries, Film And Paper Are The Most Common Two Rolls Of Raw Materials.

In flexible packaging, printing, plastic film processing and other industries, film and paper are the most common two rolls of raw materials. The material characteristics, tensile properties, thickness and hardness of these two materials are very different. The speed, tension, tool structure and precision of the cutting equipment are all completely different. When many enterprises buy high-speed cutting machine, the speed and basic parameters of the equipment are blind, and the compatibility of materials is neglected, which leads to burr, coil stretching deformation, uneven winding, frequent material breakage and excessive size deviation. This not only reduces production efficiency, but also greatly increases product defect rates. It is the key to match production line, guarantee product quality and reduce production cost to master the logic of scientific selection based on the the differentiated characteristics film and paper rolls.
The primary core principle of selection is to match the tension system of the equipment according to the characteristics of the coil material, which is the key to distinguish film cutting equipment from paper cutting equipment. Thin film material is lightweight, high toughness and easy to stretch and deform. PE, PET, OPP and other thin film materials are extremely sensitive to tension, excessive tension tends to elongate, thin, causing longitudinal patterns, or even fracture, perforation; if the tension is too low, the material will cause shaking, cutting bias, incision ball. Therefore, when processing a thin film, it is necessary to use a a slitting machine equipped with a high-precision intelligent constant tension system, which supports small tension adjustments and flexible material control throughout the process to ensure that the film is smooth and compact, does not produce tensile deformation, and is suitable for high-speed continuous slitting operations.
The characteristics of paper rolls are the exact opposite of the properties of the film. Paper materials have strong rigidity, stretching rate and greater brittleness. They don't stretch easily, but tearing and edge breakage easily. tension equipment cannot tighten paper rolls, easy to cause the material to loosen, wrinkle, cropping dislocation. Excessive tension fluctuations can also lead to paper creases, cracks and dust shedding. In the selection of paper processing, the priority should be to choose a wider range of tension, more stable tension control system. It can be adapted to different weight materials such as copperplate paper, kraft paper, thermal paper, etc., so as to avoid the damage caused by rigid tension and reduce cutting dust and burrs effectively while ensuring the smooth transportation of materials.
Secondly, according to the processing material to match the type of tool, different cutting tools correspond to different cutting process and finished product results. The mainstream of high-speed slitting machines can be divided into straight blade slitting and straight dissecting machine. Film-film soft roll is suitable for rolling the upper and lower negatives. The blade bit down with precision, slicing smoothly without pulling. It perfectly ensures the thin film incisions are smooth, without burrs or stretching, and is suitable for high speed precision cutting. For hard, brittle paper rolls, it is best to use a straight or thick alloy circular knife to cut. Cutters have higher hardness and sharper edges, which can cut paper fibers quickly, avoid fiber pulling, bristling and edge breakage, reduce cutting dust and improve the cleanliness of cutting surfaces.
Match equipment configuration and operating parameters according to machining accuracy and finished product requirements. The cutting accuracy of high-end films, precision packaging films and ultra-thin label films is very high, and the error is controlled in a very small range. In order to eliminate the bias error in high-speed operation, we should choose a high-end model with servo precision transmission, microcomputer numerical control distance adjustment and automatic correction functions. Standard precision models can be used for general products such as packaging paper and conventional film, andprecision and cost efficiency can be taken into account. At the same time, it is necessary to match the processing width of the equipment according to the maximum width of the raw material and the diameter of the coil in order to avoid excessive processing and cause a stability degradation.
According to production condition and efficiency requirement, select suitable winding structure. Film and paper roll processing can be divided into batch production and continuous mass production two working conditions. Single-axis winding machine can be used for small batch, many kinds of processing, simple operation, easy debugging, high value for money; for large-scale assembly line production, the preferred double-axis AC winding machine, can achieve uninterrupted rewinding, greatly improve production efficiency, to meet the needs of high-frequency factory production. In addition, for the film prone to electrostatic adsorption and paper prone to moisture deformation, the installation of electrostatic devices and dust-resistant structures can be selected to effectively solve production problems of electrostatic adhesion, dust adhesion, moisture wrinkling.
In conclusion, the choice of high-speed slitting machines is not only to pursue high speed and high configuration, but also to accurately match the material characteristics of film and paper with production needs. tension system system as the core, tool structure as the base precision parameters parameters as the aid, and working condition requirement as the complement to scientific selection logic, the problems of mismatch of materials, waste of equipment performance and multiple defects of finished products can be completely avoided. Choosing suitable compatible machine can guarantee smooth cutting, accurate size and orderly winding of film and paper rolls, while effectively improving production efficiency, reducing operation and maintenance costs, and laying a solid equipment foundation for deep processing and production of rolled materials.