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Preparation of double-sided self-adhesive tape Si-PSA

100%

Antosik A. K. , Antosik N. A.

tom Vol. 42, nr 1

22--26

Paper presents the technology of obtaining double-sided self-adhesive tapes based on silicone adhesives. In order to obtain self-adhesive tapes, commercial silicone resins modified with the addition of cross-linking compounds were used. To confirm that the new tapes retain the properties of self-adhesive tapes comparable to single-sided tapes. The aim of the work was to create a new technology for obtaining self-adhesive tapes. In the available literature, apart from the authors' own works, there were no changes to the production of such tapes. Double-sided adhesive tapes based on silicone adhesives are currently not available in the global market.

W pracy przedstawiono technologię otrzymywania dwustronnie klejących taśm samoprzylepnych na bazie klejów silikonowych. W celu otrzymania taśm samoprzylepnych wykorzystano komercyjne żywice silikonowe modyfikowane dodatkiem związków sieciujących oraz potwierdzenia zachowania przez nowe taśmy właściwości samoprzylepnych taśm porównywalnych do taśm jednostronnych. Celem pracy było stworzenie nowej technologii otrzymywania taśm samoprzylepnych. W dostępnej literaturze oprócz prac własnych autorów nie odnotowano wzmianek na temat otrzymywania takich taśm. Dwustronne taśmy samoprzylepne na bazie klejów silikonowych obecnie nie są dostępne na globalnym rynku.

Klasyfikacja klejów samoprzylepnych ze względu na rodzaj polimeru

80%

Antosik A. K. , Antosik N. A. , Licbarski A.

tom [Z] 73, 9-10

452--463

Pressure-sensitive adhesives (PSAs) represent a system that actually dates back to the invention of the self-adhesive articles in 1935 when R. Stanton Avery produced the first coating unit using a wooden cigar box with two holes cut in the bottom. They are nonmetallic materials used to bond other materials, mainly on their surfaces through adhesion and cohesion. Adhesion and cohesion are phenomena, which may be described thermodynamically and chemically, but actually they cannot be measured precisely. It was shown that the most important bonding processes are bonding by adhesion and bonding with pressure-sensitive adhesives. They can be describe as a special category of adhesive which in dry form are permanently tacky at room temperature and adheres to a substrate under light pressure after what can be removed cleanly, on demand, without leaving residues on the substrate; mechanically - soft, sticky substance [1-7]. One of the most popularly classification of pressure-sensitive adhesives are division according to basic polymer kind. PSA are divided on seven groups in this classifications respectively acrylic, rubber, silicone, polyurethane, polyester, polyether and EVA pressure-sensitive adhesive [5, 7-8]. Market and technology of high-quality pressure-sensitive adhesives is growing very fast. This development is the result of expansion in both existing and new fields of application of pressure-sensitive adhesives. Self-sealing polymers used for production of pressure-sensitive adhesives is directly related to their structure, which makes them unique in the world. The global market for self-adhesive tapes was expanding by 5.5% per year. In 2012 it produced worldwide about 1700.5 kilotons pressure-sensitive adhesives with a value of $ 22.7 trillion. In 2018, an increase in world production was expected to reach around 2208.2 kilotons of self-adhesive adhesives valued at 31.64 billion USD, which has been approximately met, in the following years a further increase in the production of these materials is forecasted [1-3].