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PU Adhesive-Loctite UR 7228


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LOCTITE UR 7228, quick drying PU adhesive, is a solvent-free as well as a moisture curing . At room temperature and the required humidity in the joint sufficent strength will be obtained after approximately 10 to 15 minutes. LOCTITE UR 7228 is cured in a heated press for faster curing. Maximum temperature must not exceed 70°C.
Application Areas of Loctite PU Adhesive
LOCTITE UR 7228 is used for the manufacture of sandwich elements with porous surfaces (e.g. wood) which contain
humidity. The surfacess can be bonded to one another or to metals,
laminated panels, various plastics, rigid foams made of
polystyrene, polyurethane as well as others.

sandwich panel pu adhesive
pu adhesive
How to Appliy Loctite PU Adhesive.

Application Temperature : 10 to 35 °C.
LOCTITE UR 7228, one part PU adhesive is applied to the surafce by spatula or doctor blade. One can also apply by spraying or rolls. In case of bonding surafces without sufficient humidity or which are not moisture permeable the required amount of moisture is provided by other methods. Moreover, a proven procedure is the combined spraying of the adhesive at the same time with water in a fine mist. Water is never sprayed onto the bare metal in the case of separate adhesive and water mist application. However, it is sprayed on the
other substrate or ideally on the adhesive. Bonding surfaces should be brought together immediately after adhesive application. This assures sufficient contact pressure while curing although preferably in a press.

Since LOCTITE UR 7228 cures by reaction with humidity, open containers must always be properly sealed and
protected against moisture immediately after taking out
the quantity needed. For the same reason we recommend to use up opened containers as soon as possible.
Fresh, uncured material (cleaning application equipment, substrate contamination etc.) can be removed with LOCTITE
SF 8040; cured adhesive can only be removed mechanically.

Packaging: 30 Litres Drum 



Technical Data Sheet

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