A kind of profile heat shrinkable film end sealing method

Abstract

The invention discloses a method for sealing the end of a heat-shrinkable film of a profile. The profile is sleeved with a heat-shrinkable film and then transported forward without interruption, a space is left between the front and rear adjacent profiles, and a sealing mechanism is used to seal the gap between the front and rear adjacent profiles. The heat shrinkable film is sealed, and the sealing mechanism moves with the profile at the same speed and in the same direction when sealing. The method for sealing the ends of the heat-shrinkable film for profiles provided by the invention does not need to stop the profiles during sealing, greatly saves packaging time and improves production efficiency.

Description

technical field [0001] The invention relates to the field of profile packaging, in particular to a method for sealing the end of a profile heat shrinkable film. Background technique [0002] After the profile has been treated with acid and alkali cleaning on the surface, in order to better protect its surface and reduce the problem of scratches due to collision, the surface of the profile will be covered with heat shrinkable film before packaging. The profile penetrates the cylindrical heat shrinkable film and is transported forward. In order to facilitate the subsequent heat shrinkage of the heat shrinkable film to wrap the profile, it is necessary to seal the heat shrinkable film between the front and rear adjacent profiles. However, currently in the process of sealing, it is necessary to stop the movement of the profiles in place before the sealing operation can be performed, otherwise the sealing effect will be poor. The profiles are re-transported after sealing, which ...

AI Technical Summary

Problems solved by technology

However, in the process of sealing at present, it is necessary to stop the movement of the profile in place before the sealing operation can be performed, otherwise the sealing effect will be poor

Re-transport the profiles after sealing, which leads to slow speed and low efficiency when packaging a large number of profiles

In addition, the position of the seal is not particular at present, and when the profile covered with the heat-shrinkable film passes through the area with a higher temperature after sealing, the heat-shrinkable film will gradually shrink when heated, and when the front part shrinks, the heat-shrinkable film that has not yet shrunk on the rear side will be removed. At this time, due to the random sealing position, the heat-shrinkable film after shrinking is still too long, or the heat-shrinkable film after shrinking is too short and is broken by the profile, both of which cause the heat-shrinkable film to wrap. good, bad product

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