WAX MELT

Wax Melt Temperature Indicator Label Technology

The most common application associated with wax melt temperature indicating technology is self adhesive labels that consist of a series of temperature-sensitive elements sealed between heat-resistant substrates with transparent windows. Each element changes color distinctly as its rated temperature is exceeded. The changes are irreversible, providing a temperature history of the surface being monitored. The labels will not de-laminate when removed for reference and can be attached to an inspection report to serve as a permanent record of attained temperature. Typically used in the industrial setting.

HOW THE LABELS WORK:

The temperature-sensitive elements are phase-change indicators which use the sharply defined melting points of a series of specially purified organic chemicals to give the unique, high precision, color change effects. Each temperature element uses a different chemical compound and is made separately by applying a coating containing the chemical to a special absorptive paper substrate which is usually black. When the rated temperature is exceeded, the chemical melts and is absorbed by the substrate, causing a permanent color change to black. Up to ten elements can be combined together on a single label.

TYPICAL LABEL CONSTRUCTION:

Component: Thickness
Print Foil >10µ
Melinex Polyester Film (171ºC and below) 50µ
Kaladex Film (177°C to 204°C) 50µ
Kapton Polyimide Film (210¬ºC and above) 50µ
Adhesive & Carrier (without liner) 75 – 85µ
Black Coated Paper & Backing >150µ
Release Liner 75µ

Above values are general guides for illustration purposes only.

PROCESS TEMPERATURE INDICATOR

A series of temperature test labels that will permanently record the highest temperature reached by the label.

RECORDING DISHWASHER SURFACE TEMPERATURE

Thermostrip DL labels confirm that sanitizing temperatures were reached during a dish washing cycle. These labels provide an easy method of record-keeping.

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