Knowledge base

Several important advances in EB system technology have been driven by the curingrequirements of EB silicone release coatings. The residual oxygen must be reduced to alevel that does not inhibit the curing and/or affect the functional performancecharacteristics. For silicone release coatings this needs to be less than 50 ppm (parts permillion), whe

In the last 25 years development of UV curing inks has beenlargely in the field of lithographic inks. Sheetfed in Europeand sheet and web fed in the USA. This development has not beenwithout its problems, brought about because the raw materialsused in radiation cured systems are almost totally nonlithographicin their nature. Every formulator who ha

At present, economical environment in Japan is not desirable. Japan'seconomy suddenly turned to deep recession since 1992 and the suddenappreciation of yen early in 1995 costs to produce goods in Japan. On theother hand, the Japanese industry has many hurdles to clear such asconservation of energy and natural resources, minimization of volatileorga

Styrenic block copolymers (SBC) are widelyused in a variety of pressure sensitive adhesive(PSA) applications both in tapes and labels.The most commonly used styrenic blockcopolymers for adhesive applications are tnblockscontaining an elastomeric mid-block andtwo thermoplastic end-blocks (Figure 1). Thenature of the elastomenic mid-block can bepolyb

UV curing means to harden and dry varnish or plastic with the influence of UV rays.Depending upon requirements, the rays can lie either in the infrared, UV or theelectronical spectrum.This paper only refers to the area Of UV curing

For the cationic polymerization of epoxides, hydroxyl functional materials such as glycols,polyether polyols, and polyester polyols are known to function as chain transfer andflexibilizing agents. Crivello et. 1 described quantitatively the effect of several polyethersand polyesters on the mechanical properties of the copolymers obtained in thecopo

UV & EB technologies are today recognised, common and proven processes in a variety of industrialapplications.This article is an update of a previous paper describing radiation curing equipment (1).The technology has developed to this stage over the last 25-30 years, primarily driven by environmentaland economical advantages it provides relativ

Beside the environmental aspects, the use of infrared radiation for waterbasedpaints meets the requirement of reducing the time and energy needed for the dryingprocedure. Thereby is expected a high efficiency of converting electrical energy intoradiation energy. Only the surface region should be heated to the requiredtemperature and the bulk should