Knowledge base

Uv-curable powder is very well suited for coating 3-dimensional objects made from medium densityfibreboard (MDF), typically for use in kitchen, bathroom and general furniture applications. In thispaper, the advantagesand limitations of uv-powder over conventional adhesive laminates and liquiduv-coatings are outlined. The physical and chemical requi

The inhibitory effect of oxygen on the radical photopolymerization is well known. Oxygen reacts with carbon —centered propagating radicals at the diffusion-controlled limit to form peroxy radicals much less reactive towards double bond, thereby reducing the efficiency of initiation. This generally leads to significant retardation (or even inhibitio

Many polymers, especially those without functional groups like polyethylene PE, polypropylene PP,polytetrafluoroethylene PTFE etc., need a pretreatment to alter their surface properties in order to improve the adhesion to other materials which are applied by subsequent coating, printing or laminating process steps. Conventional surface modifying te

Although UV light curing technology has been used for over 30 years in the printing industry, it is still a new technology by comparison with conventional printing. More and more printers are converting to UV printing and the technology is being used in an increasing number of printing applications. Its growth rate is far above that of the printing

The radiation curing industry is searching for new polymerisable materials as alternatives toacrylates. Whilst acrylates possess many admirable features such as speed of cure, and there is a plethora of commercially available materials which give coatings having a wide range of properties, there is still concern about their toxicity and this is fue

The role of solvents in photografting a typical methacrylate monomer, methyl methacrylate (MMA)to polypropylene (PPE) and cellulose is reported. A wide range of solvents of varying polaritieshave been studied for grafting to these substrates. The effect of additives which represent typicalcomponents used in radiation curing on the grafting reaction

Although UV curing of acrylic pressure sensitive adhesives is known for more than 30 years, theinterest has grown rapidly in the last years 1]. The challenge to develop adhesive coatings free from organic solvents, while retaining the performance properties of solvent-based acrylic, is the major motivation in the concept of UV curing, It has been a

The aim of this paper is to describe some of the difficulties encountered when recycling indeinking plants in order to produce high-quality white deinked pulp (DIP). The deinking processrequires, after reslushing recovered papers, an optimal size of ink particles. This size depends onthe recycling techniques, but mainly on the nature of the ink.Fir