Mod­i­fied at­mos­phere analysis be­fore seal­ing

DEMM Engineering & Manufacturing - - FOOD -

It doesn’t get any faster than this, says Witt-Gasetech­nik. The man­u­fac­turer’s new MAPY VAC in­line gas anal­yser checks the mod­i­fied at­mos­phere of pack­ages pro­cessed in tray­seal­ers and ther­mo­form­ers be­fore the pack­ages are fi­nally sealed.

Witt- Gasetech­nik asks, “Why wait un­til the pack­ag­ing is sealed to per­form qual­ity con­trol?” asks Witt-Gasetech­nik. There is now a much bet­ter way to check the qual­ity of the en­tire out­put of a ma­chine. And one with twice the ben­e­fits: The MAPY VAC de­vice checks the vac­uum gen­er­ated in the pack­ag­ing ma­chine first, then mea­sures the in­com­ing in­ert gas in the seal­ing tool it­self. Thus, the mea­sure­ment is per­formed in sync with the ma­chine cy­cle.

The MAPY VAC was spe­cially de­signed for tray-seal­ers and ther­mo­form­ers.

If the in­di­vid­u­ally de­fin­able limit val­ues for O2 or CO2 are ex­ceeded, an alarm is trig­gered, or the MAPY VAC halts the op­er­a­tion of the pack­ag­ing ma­chine im­me­di­ately. The en­tire process is fully au­to­mated and ex­tremely fast. This re­sults in seam­less and non-de­struc­tive in­line qual­ity con­trol. For even greater safety, the new Witt anal­yser also checks the gas con­cen­tra­tion in the pack­ag­ing ma­chine’s buf­fer tank.

The ma­jor ben­e­fit of in­line analysis is that if some­thing goes wrong with the gas mix­ture, or as the pro­tec­tive gas is in­tro­duced into the pack­ag­ing, the user recog­nises this im­me­di­ately and is then able to in­ter­vene directly in the process to cor­rect the prob­lem, says Witt. The use of this ap­proach pre­vents on­go­ing mal­func­tions, with their re­sul­tant costly cor­rec­tive ac­tions later – which would in­clude the repack­ag­ing of all prod­ucts and dis­posal of the un­us­able pack­ag­ing.

Witt is in­tro­duc­ing the MAPY VAC as a compact unit in a hy­gienic stain­less steel hous­ing. The de­vice ac­cu­rately and re­li­ably mea­sures oxy­gen, as well as car­bon diox­ide

(if re­quired), in the 0 to 100 per­cent range. The mea­sured val­ues are dis­played in in­cre­ments of 0.01 per­cent for gas con­cen­tra­tions be­low 10 per­cent and in in­cre­ments of 0.1 per­cent for gas con­cen­tra­tions above 10 per­cent.

Witt’s Gas­con­trol Cen­ter dig­i­tal con­trol soft­ware con­trols and mon­i­tors all ac­tions and com­mu­ni­cates with the pack­ag­ing line sys­tems. The anal­yser is in­te­grated within the user’s net­work via an Eth­er­net in­ter­face. All pro­ce­dures are stored in­ter­nally and can be ex­ported. Two vari­ants are avail­able: With a touch­screen, or as a black box ver­sion with­out a dis­play, spe­cially de­signed for au­to­mated ma­chine con­trol.

The com­pany says that with in­line gas analysis, it sees a real pro­duc­tiv­ity gain for the user and en­hanced safety for the con­sumer. The 100 per­cent qual­ity con­trol process of­fers op­ti­mum qual­ity as­sur­ance and is a per­fect com­ple­ment to the fi­nal ran­dom batch sam­pling as one last check be­fore the pack­ages are despatched, con­cludes Witt.


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