Surface tension - Import export

Master patterns must be treated with ALWA surface tension remover (art. no. 9500000), so that the ALWA release lacquer does not roll off. ALWA surface tension remover is applied in a thin coat with a brush or a sponge. After approx. 10 min. the solvent is evaporated and ALWA release lacquer can be applied.

For temperatures up to 450 °C. High-temperature furnaces Tempering furnace for car chassis stabilisers Previously cold-formed workpieces, e.g. stabilisers, are heated up in the tempering furnace at circulating air temperatures of up to 450°C and maintained at this temperature for an adjustable dwell time. This tempering increases toughness and dissipates residual stresses. Preheating furnace for frying pans and roasting tins Pan blanks are heated up to a temperature of approx. 390 °C and burnt free of all grease and oil residues. Enamelling furnace for frying pans and roasting tins The PTFE coating sprayed beforehand onto the frying pans is baked on at a temperature of approx. 450 °C. PTFE is used as a non-stick coating for frying pans and cooking pots on account of its low surface tension and good heat resistance. Chamber enamelling furnace for aluminium sheet metal forms Baking on of the single or multi-layer PTFE coatings at approx. 450 °C.

Antifogging agents prevent the formation of condensation drops on plastic film. Condensation drops are undesirable on food packaging because they mar the package imaging and the packaged item is not clearly visible. In greenhouse film they prevent condensation from dripping, which results in brown spots caused by the concentration of light. In antifogging agents, special additives are worked into the polymer which migrate to the surface and minimize surface tension.