Shrinking process for producing solid, transportable and printable containers and device for carrying out said shrinking process

Abstract

The invention relates to a shrinking process for producing solid, transportable and printable containers, especially bottle containers with a height / width ratio of > 1 and containing heat-sensitive filling substances. The shrinking process comprises the steps of covering the containers to be packaged with a film in such a manner as to produce an overlapping section of the film ends on the bottom surface, heating them by heat transfer or convection, thereby fusing together the free ends in the area of overlap, and then finally heating the containers in a shrinking oven, the container so produced being stabilized by the shrinking process. The incoming hot air is first locally limited to the bottom surface of the container in order to form a peripheral shell in the area of the bottle bottoms and the shape of the container is stabilized while the container is continuously transported during stabilization. The hot air directed onto the bottom area of the container in a bundle of discretely distributed gas jets is discharged and returned after a locally limited heat transfer with the film. More hot gas is directed laterally onto the continuously transported container at an increased lateral blow speed in order to complete the shrinking process.

Description

Technical field [0001] The present invention relates to a shrinking process for manufacturing strong, transportable and printable packages / package containers, especially packages for bottles with an aspect ratio greater than 1, which process includes encapsulation with a film Items to be packaged to form the overlap area of ​​the film end on the bottom surface, heat by heat exchange or convection to fuse the free end in the overlap area, and finally heated, wherein at the same time the finished package is stabilized by the shrinking process . Background technique [0002] Nowadays, the shrinking process used to manufacture sturdy, transportable and printable packages is applied in many forms to film packages, which are used as sales units for bottles. In this case, the film is also used as an advertising carrier, for example, for beverage bottles encapsulated in shrink film. Generally, hot gas is used to heat the shrink film, where the heat energy is transferred to the surface of...

AI Technical Summary

Problems solved by technology

However, lower temperatures cause problems in welding, so the strength required in parcel packaging is not always achieved

[0006] Furthermore, the inventors are convinced that although the sealing of the overlapped film ends at lower temperatures avoids a significant heating of the goods themselves, such problems ensue, especially in the case of continuous transport of packages , that is, the enveloping film is inflated and slides when hot air is blown in from the side

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