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A further advantage of PUR in edge bonding is that it seals the joint against water ingress.Like PVA adhesives, and unlike epoxies, polyurethane reactive (PUR) adhesives are one part adhesives. That is, they don’t require mixing before application. However, PUR adhesives have a very different method of bonding.
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Product Description
Polyurethane moisture reactive hot melt adhesive offers quick curing, excellent adhesion, and resistance to weather conditions. It is ideal for bonding a variety of materials including plastics, flat laminated PVC, woodworking decorative edge banding, furniture parts production, woodworking profile wrapping, parquet manufacturing, and other uses.
A further advantage of PUR in edge bonding is that it seals the joint against water ingress.Like PVA adhesives, and unlike epoxies, polyurethane reactive (PUR) adhesives are one part adhesives. That is, they don’t require mixing before application. However, PUR adhesives have a very different method of bonding.
PUR is especially useful where it is the sole bonding mechanism. This makes it valuable in structural applications. It’s also good for edge bonding, with the limitation that tight control over the volume of adhesive dispensed is important to minimize any cleanup.
Used as a hot melt, PUR is applied to a porous surface like wood as a liquid. There, solidification forms the initial bond, after which the PUR adhesive starts to react with moisture. This process, which takes 24 – 48 hours to complete, expands the adhesive slightly to form a strong bond between the surfaces.
The companies that manufacture PUR adhesives tailor properties like viscosity, open time and set time to suit particular requirements and types of application. Accordingly, there are a wide range of PUR adhesive products in various formats and with different options for dispensing.
PUR hot melt does work on wood. It comes in many forms. Hot melt glue can be used with many woodworking projects. These include cabinets, tables, chairs, and bookcases.Will hot glue hold wood together? You may think that wood glue is the only suitable adhesive for wood, but some hot melt adhesives can also work very well in some cases. In fact, both types of glue can be combined for durable wood joints.
