Heating unit for heating packaging casing and device comprising the heating unit
A heating device and heating element technology, used in food filling and packaging devices, cardboard composite packaging, filling and packaging fields, can solve the problems of excessive distance activation, inaccuracy, liquid overflow, etc., to reduce heat conduction and good buffering effect. , Improve the effect of pyrolysis
Active Publication Date: 2021-03-19
SIG TECH AG
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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
[0041] 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.
[0042] 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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A heating unit (11) comprising at least two heating devices (40) is described and drawn for at least partially heating an end region (10) of a packaging shell (6) to be sealed with hot air, wherein the heating unit (11) has a blower device (41) for delivering the air to be heated to the heating device (40), wherein the heating device (40) has a heating element (55) for generating hot air and a heating element (55) for use in heating A nozzle unit (46) for blowing hot air generated in the device (40) against the end region (10) of the packaging shell (6). In order to increase the tightness of the sealed end region of the packaging shell without incurring excessive equipment costs and / or technical complexity, it is provided that the heating devices (40) each pass individually through at least one support (49) They are connected with the air supply device (41) and supported on the air supply device (41) through at least one bracket (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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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