Open for everything
Whether window scantlings or door frames: A permanent resistance of the solid wood elements is essential due to the exposure of these products to outdoor conditions. The Jowat product portfolio with powerful D4 dispersions, EPI dispersions and PUR adhesives provides processors with the opportunity to meet different requirements.
In the manufacture of window scantlings and door frames, certain regulations which also involve the processed adhesive have to be observed. Laminated window scantlings and door frames are largely bonded with PVAc adhesives which meet the requirements for durability class D4 according to EN 204. Products which are bonded with PVAc glues and are intended for exterior use with exposure to direct weathering need an appropriate surface coating. For a moisture-resistant bond, Jowat provides special reactive one- and two-component D4 dispersions. Compared to other systems like the UF resins which were largely used in the past, these reactive dispersion adhesives of the latest generation offer several major advantages. They have a low formaldehyde content and therefore meet today’s strict requirements regarding the interior atmosphere. In addition, these reactive dispersions impress with shorter pressing times in cold gluing applications and a more elastic bondline. They can be processed at significantly lower temperatures in hot pressing procedures and thereby lead to a reduced energy consumption. Due to their great processing variability, dispersion adhesives can be used for almost all solid wood bonding purposes.
For applications with special requirements, such as in the production of facades which have to withstand high static loads or of winter gardens, Jowat offers polyurethane adhesives with an increased resistance to heat and moisture. The product portfolio includes PUR adhesives that are approved for building construction and certified for load-bearing construction purposes. In addition, these moisture-curing adhesives are ideal for bonding certain wood species and material combinations, such as wood to metal.
Two-component emulsion polymer isocyanate (EPI) adhesives from the Jowacoll® product series have also been tried and proven in applications which have to meet the durability class D4. These adhesives are ideal for bonds with direct exposure to weathering, the gluing of form parts and for the bonding of modified wood. Compared to reactive dispersions, EPI adhesives offer a considerably higher solids content and are characterised by fast setting and high heat resistance.
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.