Heat-sealing device for plastic bag or plastic tube

Abstract

The invention provides a heat-sealing device for a plastic bag or a plastic tube, and belongs to the technical field of heat-sealing equipment for plastic tubes or plastic bags. The heat-sealing device is characterized in that the heat-sealing device comprises an air uniformizing box (5) and a platform (4) arranged on one side of the air uniformizing box (5) in a spaced mode; an air outlet (501) is formed in the side, close to the platform (4), of the air uniformizing box (5) and is parallel to the platform (4); and the air uniformizing box (5) is connected with a hot air pipe (1). According to the heat-sealing device for the plastic bag or the plastic tube, the air outlet is formed in the side, close to the platform, of the air uniformizing box, hot air in the hot air pipe is evenly sprayed out along the air outlet after passing through the air uniformizing box, and the to-be-sealed side of a plastic film is placed between the platform and the air outlet, so that heat-sealing of the plastic film can be achieved in the pulling process of the plastic film, and accordingly, the heat-sealing speed of the plastic film is increased; and the plastic film does not need to be squeezed relative to the platform, so that the appearance of the plastic bag or the plastic tube is not affected, and the situation that the plastic film is torn up due to inaccurate matching between heat-sealingand puling of the plastic film is avoided.

Description

technical field [0001] A plastic bag or plastic tube heat sealing device belongs to the technical field of plastic tube or plastic bag heat sealing equipment. Background technique [0002] In the production process of the existing plastic bag or plastic tube, both sides of the plastic film need to be overlapped and heat-sealed to form a plastic tube, and the plastic tube is cut off and the end is sealed to form a plastic bag. The existing heat-sealing device is a contact-type heat-sealing device, which needs to be in contact with the plastic film to achieve heat-sealing, which causes the plastic film to stop pulling during the heat-sealing process, and the plastic film can be pulled again after the heat-sealing is completed , the traction movement of the plastic film during the heat-sealing process is not continuous, which greatly reduces the speed of heat-sealing, and the extrusion of the plastic bag during the heat-sealing process will cause deformation of the plastic film...

AI Technical Summary

Problems solved by technology

The existing heat-sealing device is a contact-type heat-sealing device, which needs to be in contact with the plastic film to achieve heat-sealing, which causes the plastic film to stop pulling during the heat-sealing process, and the plastic film can be pulled again after the heat-sealing is completed , the traction movement of the plastic film during the heat-sealing process is not continuous, which greatly reduces the speed of heat-sealing, and the extrusion of the plastic bag during the heat-sealing process will cause deformation of the plastic film or wrinkles on the plastic film, affecting the plastic Shape of bag or plastic tube

In addition, if the traction and heat sealing of the plastic film are inaccurate when the heat sealing equipment is in use, the problem of tearing the plastic film will occur, resulting in damage to the plastic film

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