Horizontal-seal cutting method for soft bag type package and horizontal-seal cutting device

Abstract

The invention provides a traverse sealing cutting method of soft-bag packaging, comprising a plurality of steps such as membrane applying, hot sealing, cutting and cold wind blowing, etc. The invention also provides a soft-bag packaging traverse sealing cutting device, comprising a membrane device, a traverse sealing hot pressing device and a cutter; the membrane device comprises a pair of upper membrane pieces and a pair of lower membrane pieces; between the upper membrane pieces and the lower membrane pieces, a pair of work heads of the traverse sealing hot pressing device can move relatively along the front and back directions in a matching way; the cutter can rotate; one of the upper membrane pieces or the lower membrane pieces is provided with a through hole; the rotating path of the cutter is the traverse sealing station cutting packaging membrane that comes through the through hole and rotates to the packaging membrane. The hot pressing and cutting of the invention are positioned at the same station, which can solve the troublesome of debugging and regulating caused by different stations of hot pressing and cutting; besides, the cutter rotates into the cutting packaging membrane from the outside, so as to be good in cutting effect and have no relation to the structure of the hot pressing work head, thus ensuring the cleanliness of seal and cutting off position of the soft-bag.

Description

technical field [0001] The invention relates to a horizontal sealing and cutting method for soft bag packaging and a horizontal sealing and cutting device for a soft bag packaging machine. Background technique [0002] In the past, the horizontal sealing and cutting devices were generally used for packaging materials: direct heating and fusing, heat sealing, pressing and cutting, etc. The application of the former can be seen in the Baili package And the transverse sealing and cutting of the adjacent multi-layer composite soft film, the application of the latter is seen in the rigid multi-layer composite film. The sealing area produced by the direct heating fusing sealing method is relatively narrow and close to a line, and the melting plastic residue is easy to be left on the heating device, which is not conducive to keeping the sealing place clean, and bonding and wrinkles will occur after a long time. As far as the heat-sealing, pressing and cutting-off type is concerne...

AI Technical Summary

Problems solved by technology

The sealing area produced by the direct heating fusing sealing method is relatively narrow and close to a line, and the melting plastic residue is easy to be left on the heating device, which is not conducive to keeping the sealing place clean, and sticking and wrinkles will occur after a long time

As far as the heat-sealing, pressing and cutting-off type is concerned, if the heat-sealing, pressing and cutting are at the same station, the cutter is in the middle of the heat-pressing working head, so that there will be a strip formed at the sealing due to the inability to heat-press. The non-sealing tape that is relatively narrow but cannot be completely eliminated, there will be some filling materials left here, because some filling materials are easy to spoil in the air (such as fresh milk, yogurt, etc.), which is not conducive to the cleaning and storage of packaging bags

If the double-station method is used, that is, after the horizontal sealing station is heat-pressed and sealed, the soft bag is moved one more stroke to the cutting station for cutting into bags. Although the above defects can be eliminated, when the size of the soft bag changes When cutting the film, the position distance between the horizontal sealing and the cutting device must be changed, and debugging and adjustment are also very troublesome, and the cutter needs to cooperate with the back knife groove when cutting the film, and the knife groove is easily blocked by plastic residues and affects the cutting effect

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