Descrição da Aplicação
Os meios filtrantes plissados são feitos de uma ampla variedade de materiais, como, por exemplo, papel ou diferentes tecidos não tecidos. Os adesivos termoplásticos para filtros da Jowat para plissagem e colagem de molduras são caracterizados por um amplo espectro de adesão. Adicionalmente, eles também funcionam como selantes, dão estabilidade aos filtros e facilitam processos altamente confiáveis. Devido às características especiais desses adesivos, os filtros acabados mantêm sua forma durante todo seu ciclo de vida, mesmo quando o composto é exposto à tensão mecânica, por exemplo, durante a instalação ou a temperaturas altas de mais de 180 °C. Hot melts especiais à base de poliolefina podem ser usados para plissagem bem como para colagem de quadros de filtros e atendem todos os requisitos necessários.
Engine intake air filters are good examples to explain the importance of these pleated filters. They need to guarantee that the high-performance components are protected against potential damages from rust, pollen, dust, tire abrasion, sand, and other dirt, allowing the engine to operate with efficient combustion and without damage. The pleating in this case functions to enlarge the surface while taking up only a small space.
Since the filter materials and also the manufacturing methods differ widely, the adhesives utilized for the pleating process demand special properties: an open time adapted to the line speed, a high initial or green strength / handling stability and a high temperature resistance
Filter papers soaked with phenolic resin undergo thermal processes after pleating which may expose them to temperatures up to 180 °C, and of course, the adhesives must withstand this stress.
The engine compartments of today’s cars are becoming more and more compact, and in consequence allow only very limited space for the air filters. When these are exchanged in the course of maintenance, the filter elements are heavily deformed, which then also requires superior resistance of the bonded frames. The adhesive, specifically the adhesive joint, may not fail, and the filter pockets must remain sealed. Additionally, the performance of the filter element may not be diminished in any way by the adhesive.
Informação do produto
The products listed only represent a limited selection of the available product portfolio. Product availability might differ by region. The technical data, characteristics and field of application provided in the table outline the differences between the individual adhesives of the product portfolio. Our Application Technology Department and our Sales Representatives are on hand to provide advice and support you finding the best adhesive for your particular application.
Note: The information on this page is based on test results from our laboratories as well as on experience gained in the field, and does in no way constitute any guarantee of properties. Due to the wide range of different applications, substrates, and processing methods beyond our control, no liability may be derived from these indications nor from the information provided by our free technical advisory service. Customer trials under everyday conditions, testing for suitability at normal processing conditions, and appropriate fit-for-purpose testing are absolutely necessary. For the specifications as well as further information, please refer to the latest technical data sheets.