The company has apparently seen a big increase in the number of customers trialling and approving its US Food and Drug Administration-food compliant adhesive, ET5147 and its EU 10/2011-formulated ET5162 epoxy.
Permabond ET5143, ET5145, ET5147 and ET5162 are all two-component, room-temperature curing epoxies comprising resin and hardener which cure when mixed together.
Permabond’s ET514X grades are formulated exclusively with materials on the FDA approved materials list and a declaration letter can be provided to customers. ET5162 also complies with EU 10/2011 formulation requirements, using approved raw materials with migration calculations. Permabond also offers ET5365 two-part epoxy which is approved for contact with drinking water.
Filter applications that use epoxy adhesives are mesh screens stretched across a frame and bonded in place with adhesive around the edge – ideal for industrial sieving. These epoxies have good adhesion to stainless steel, particularly ET5162. If cured with heat, extra cross-linking can be achieved to give an even stronger bond. Other applications include potting pleated filter media into end caps.
Permabond can offer low viscosity, low exotherm adhesives (if necessary, with food compliant formulations).
Most two-part epoxies have an upper temperature limit of 80 deg C, but ET5147 and ET5162 can withstand up to 120 deg C. Chemicals such as strong acids and alkalis should be avoided, and a combination of high temperature and an aggressive chemical can weaken the adhesive more significantly.
Permabond can supply material in easy-to-dispense cartridges (with static mixing nozzles). These are available in 50ml and 400ml sizes and fit in handheld dispensing guns (either manually ratcheted or pneumatic). Bulk material is also available in 5kg, 20kg, 200kg and can be used with follower plates on automatic dispensing equipment.
