August 2019

VACUUM-SEALING HAS TO BE CLOSE TO 100% TO BE EFFECTIVE FOR OUR FOOD. HOW DOES EXERGEN HELP IN THIS PROCESS?

APPLICATION NOTE: VACUUM-SEALING PACKAGING MACHINES

We like our food to be as fresh as can be. Vacuum-Sealing packaging can extend the shelf life of food products by preventing exposure to the natural atmosphere, thereby slowing down the microbial deterioration of the product. The vacuum also fixes the product within the pack, providing a degree of protection and reducing the packaging volume.

In order to have effective vacuum-sealing packaging it is that the seal must be closed 100%. If any air comes into the packaging, the quality cannot be guaranteed and the product cannot be sold. Having a reliable vacuum-sealing packaging solution is key to prevent issues and/or delays in production.

After the vacuum process the sealing of the plastic bag is created using a hot resistance wire that fuses both sides of the vacuumed plastic bag together. The temperature of the plastic and the ambient temperature of the machine can vary throughout the day. This temperature variability can result in failed seals in the early morning when the melting wire may be cold. If the heat is increased to prevent this situation, the temperature later in the day may be too high, and may burn plastic as a result.


Read the full Application Note here

RELEVANT TECH NOTE #96: IRT/C NON-CONTACT HEAT SEALING TEMPERATURE CONTROL FOR PACKAGING MACHINERY (OEM & RETROFIT)

IRt/c infrared thermocouples can accurately control the temperature of rotating and moving stainless steel heaters common in the packaging industry, without touching the heaters.

Typically, uncoated stainless steel heaters are difficult for IR sensors to measure reliably because of reflected infrared signals that can change after after a heater surface is cleaned. The solution to this problem is simple:

Choose an unused location on the heaters, as close as possible to the surface you wish to measure. Mechanically mount a surface that is reliable for the IRt/c to measure.

Read the full Tech Note here