A cable-drawn film production equipment

Abstract

A kind of cable-drawn film production equipment, comprising a frame, a rotary film release device, a spiral pinch device, a cutter and a traction roller; the rotary film release device, the spiral pinch device, and the traction roller are sequentially arranged on the frame from bottom to top; The cutting knife is set on the upper part of the spiral pinch device, set on the frame and close to the top of the spiral pinch device, the cutting direction of the cutter and the horizontal direction form an angle β; the traction roller is located above the spiral pinch device, and the traction roller The traction direction is consistent with the cutting direction of the cutter. The spiral pinch device performs spiral pinch feeding on the film tube, and stretches the film tube in the spiral direction, while the cutter cuts the spirally stretched film tube to form a continuous film stretched obliquely on both sides. The stretching directions of the obliquely stretched continuous film intersect. Therefore, as long as they are compounded, a continuous film with cross-stretch resistance in two directions can be formed, so that the film can obtain better stretch resistance in both directions.

Description

technical field [0001] The invention relates to a film production equipment, in particular to a cable-drawn film production equipment. Background technique [0002] The production methods of film generally include film blowing, extrusion, casting, etc., but no matter which method of film is produced, it does not have stretch resistance and cannot be directly used as packaging materials. [0003] In order to make the film have stretch resistance, it is necessary to stretch the film to a certain extent, for example, longitudinal stretch or transverse stretch. When the film is stretched longitudinally, the film obtains longitudinal stretch resistance, while transverse stretch It still does not have stretch resistance, on the contrary, when the film is stretched transversely, the film obtains transverse stretch resistance, but the longitudinal aspect still does not possess stretch resistance. [0004] In order to make the film have both transverse stretch resistance and longitu...

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Problems solved by technology

[0009] Both of the above two methods need to cut the film to a certain length first, and then stretch or compound it. The production process is complicated, which also leads to a relatively complicated structure of the corresponding production equipment; in addition, more importantly, the film cannot be continuous, but the film The application often has a certain length requirement. For example, a continuous 50-meter film is required. The longitudinal length of the film can be easily met, but the transverse length of the film cannot be achieved at all. In addition, if it is stretched, then the film stretching The equipment needs to be at least 50 meters long, so if it needs to be 200 meters long, of course at least 200 meters of stretching equipment is required, which undoubtedly causes the stretching equipment to occupy a huge area, which also leads to the current roll film Generally only have the status quo of longitudinal tensile properties

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