Avery 7112 HF user manual Basic Sealing

Basic Sealing

Heat, dwell time, and pressure are the basic fundamentals that determine the results obtainable on a thermo-plastic sealing application, such as Electro-Seal labeling. It is impossible with the variety of fabric materials and constructions, as well as design of garments, to establish any one setting that will give the most desirable results under all circumstances. ON THE BASIS OF EXTENSIVE SUCCESSFUL LAUNDRY TESTS, ON AVERAGE WEIGHT GOODS INVOLVING BOTH WOVEN AND KNIT MATERIALS, WE WOULD SUGGEST THE FOLLOWING STARTING POINTS FOR A NEW ELECTRO-SEAL USER;

-Setting the plate heat at 400ºF has proven to be a good starting point. Setting the electrode heat will depend on the type of adhesive being used. A cycle time of 1 1/2 - 2 seconds for average weight fabrics and labels has proven adequate for laundry proof attachment.

Remember…these are only basics, and these settings can vary. Seal a label to a sample. As your Electro-Sealer times out and releases itself, immediately remove the fabric and lift the corner of the label. If the adhesive has stuck to both the fabric and the label, the sealing can be judged successful. If all the adhesive is on the fabric and none on the label, decrease the plate heat or cut back the time. Adhesives tend to flow toward the heat.

If the adhesive has not transferred to the fabric, you have three adjustments that can be made:

A. Increase the plate heat

B. Decrease the electrode heat; thermoplastics tend to flow towards higher heat when melting.

C. Increase the cycle time to allow complete melting.

If the adhesive has all transferred to the fabric with none left on the label, you may:

A. Reduce the plate heat

B. Decrease the cycle time

You must judge for yourself, depending on the fabric's sensitivity to heat and time, which of the adjustments will be best.

8 • General Description Users Manual Electro-Sealer 7112 HF