Film cooling forming device of film-blowing machine

Abstract

The invention discloses a film cooling molding apparatus for the film blower, which comprises an intake plate, an inner cooling water diversion barrel, an outer cooling water ring, a water-scraping barrel, a water-collecting barrel and a water absorption container. The intake plate is arranged on the upper of the inner water diversion cooling barrel; the intake plate is connected with an inlet pipe; the upper end of the outer cooling water ring is open and is covered out of the inner water diversion cooling barrel; a water inlet hole is arranged at upper part of the inner water diversion cooling barrel; a water inlet pipe is arranged at the water inlet hole; the water-scraping barrel and the water-collecting barrel are arranged in sequence under the inner water diversion cooling barrel and the water-scraping barrel; the water-collecting barrel and the inner water diversion cooling barrel are communicated with each other; a pumping pipe is connected with the water-collecting barrel; the water absorption container is arranged under the water-collecting barrel; the water absorption container is provided with a water absorption sponge and the water absorption container is connected with a suction pipe. With simple structure and low production cost, the invention has the advantages that the inside and outside water is contacted with the film base directly; the fast and even coolingis achieved; the problems of poor cooling and non-uniform thickness of the film base in prior art are solved.

Description

technical field [0001] The invention relates to an improved invention of a film cooling and forming device of a film blowing machine, in particular to a cooling and forming device of a bidirectional synchronous stretch film blowing machine. Background technique [0002] At present, the film machine for producing BOPP (biaxially oriented polypropylene film by the tubular film method) is mainly based on the flat film method, but the flat film method has a complex structure and high cost, which brings economic difficulties to the manufacturers to purchase the machine; Another film blowing machine with tube film method adopts indirect cooling by cooling tank and photoelectric foam stabilization outside the tube blank. The design is very difficult, the manufacturing cost is also high, and the cooling effect is not ideal, and the PP material is out of After the die, it will crystallize rapidly, making the next step of stretching impossible. In addition, this kind of machine uses c...

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Problems solved by technology

[0002] At present, the production of BOPP (tube film biaxially oriented polypropylene film) type film machines is mainly based on the flat film method, but the flat film method has a complex structure and high cost, which brings economic difficulties to the manufacturer to purchase the machine; Another type of film blowing machine with tube film method uses indirect cooling of the cooling tank and the method of photoelectric bubble stabilization outside the tube blank. The design is very difficult, the manufacturing cost is also high, and the cooling effect is not ideal, and the PP material comes out After the die opening, it will crystallize rapidly, so that the next step of stretching cannot be carried out. In addition, this kind of machine uses air-conditioning to shape, cool and control the thickness of the film blank tube, so there is still an error in the thickness of the film blank tube, making the film blank The thickness of the tube is uneven. According to the deficiencies of the existing technology, the film cooling forming device of the BOPP film machine needs to be improved to meet the needs of the manufacturer.

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