Heating unit for heating packaging casings and device comprising a heating unit of this type
A technology of heating unit and heating device, which is applied in cardboard composite material packaging, a device for filling packaging with food, and in the field of filling packaging, which can solve the problems of excessive activation of distance, inaccuracy, liquid overflow, etc. Heat conduction, good cushioning effect
Active Publication Date: 2018-07-31
SIG TECH AG
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AI Technical Summary
Problems solved by technology
[0007] In practice, however, it is difficult to achieve accurate and reliable activation of the end to be heated of the packaging shell over a longer period of time.
Longer time periods always lead to inaccuracies in the heating of the end zone of the packaging shell
Packaging, for example, can cause locally overactivated or insufficiently activated due to too small or too large a distance between the packaging material and the exhaust opening of the hot air in the nozzle unit
In any case, over- or under-activation of the packaging material can result in insufficient hermeticity of the sealed end area
In this case, the liquid may spill out of the package after filling
It is also possible that the leak did not occur until later, under higher mechanical loads
Method used
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Embodiment Construction
[0042] exist figure 1 A device 1 for filling a package 2 , in particular with a flowable food product, a so-called filling machine, comprising a device 3 for forming a package 2 is drawn. The device 1 drawn and preferred in this respect comprises a row of parallel production lines, in which figure 1 Only one production line is drawn in . Each production line is assigned a packaging blank 5 in the form of a bundle of 4 packaging material blanks, the longitudinal edges of which are sealed to each other and thereby form a packaging casing 6 which is provided folded. The packaging casing 6 is unfolded by means of the feeding device 7 , wherein application devices for applying non-illustrated potting elements to the packaging casing 6 can also be provided if necessary.
[0043] The device 3 for forming the package 2 has a mandrel wheel 8 which, in the illustrated case and preferably in this case, contains six mandrels 9 and rotates periodically, ie stepwise, counterclockwise. In...
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Disclosed is a heating unit (11) comprising at least two heating devices (40) that use hot air to at least partially heat end regions (10) of packaging casings (6) that are to be sealed, the heating unit (11) having an air supply device (41) for supplying the heating devices (40) with air to be heated and each heating device (40) having a heating element (55) for producing hot air and a nozzle unit (46) for blowing the hot air produced in the heating device (40) against the end region (10) of the packaging casing (6). In order to increase the sealing tightness of the sealed end regions of thepackaging casings, without having to resort to excessive equipment expenditure and / or procedural complexity, according to the invention each heating device (40) is connected separately to the air supply device (41) via at least one fixture (49) and is held separately on the air supply device (41) using said at least one fixture (49).
Description
technical field [0001] The invention relates to a heating unit comprising at least two heating devices for at least partially heating an end region of a packaging casing to be sealed with hot air, wherein the heating unit has a device for supplying the air to be heated to the heating device Air supply devices, wherein the heating devices each have a heating element for generating hot air and a nozzle unit for blasting the end region of the packaging shell with the hot air generated in the heating device. Furthermore, the invention relates to a device for filling packages, in particular with (flowable) food products, having a heating unit for at least partially heating the end region of the packaging shell to be sealed with hot air, A sealing unit is provided for sealing and welding the end region of the heated packaging casing in a watertight manner and a filling device is provided for filling the packaging casing which is closed at least on one side. The invention also relat...
Claims
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Patent Timeline
Login to View More IPC IPC(8): B65B51/20B65B65/00B29C65/10
CPCB65B51/20B65B65/00B29C65/787B29C65/7882B29C66/1122B29C66/43122B29C66/4326B29C66/71B29C66/72321B29C66/72328B29C66/72341B29C66/72343B29L2031/7166B29C66/73921B29C66/80B29C66/8167B29C66/8322B29C66/8432B29K2705/02B29C65/103B29C66/849B29K2023/06B29K2077/00B29K2023/086B65B65/003
Inventor 米夏埃尔·海尔
Owner SIG TECH AG