Weigu polyurethane (PU) foam caulking agent wooden door construction technology

1. Use Foam caulkCommon problems encountered when installing set wooden doors

After the door frame is installed and the foaming agent is cured, the foam agent will expand outward or shrink inward, causing the door frame to deform and shift, affecting the normal use of the door.

2. Recommended installation and construction procedures:

1 , the gap between the door frame and the wall is 1.5~2CM is appropriate.

2, fixed with wooden supports, clips and fixings. Place wooden plugs or wedges with equal clearance between the door frame and the wall to prevent displacement caused by uncertain factors.

3. Foam caulk should be shaken up and down thoroughly before use1minutes or so, and then install the spray gun (before using the spray gun, check whether the spray gun is clogged and whether it can be used normally).

4. Method 1: After fixing the door cover, first put in the gaps on both sides of the door cover. 4~5fixed points, etc.1~2After an hour of curing, add the foaming agent in layers gradually, leaving some gaps in the middle. Do not fill it all at once to avoid instability due to insufficient foaming of the foaming agent. Phenomenon.

5. Method 2: After fixing the door pocket, extend the gun to the middle of the width of the door pocket, from bottom to top, Make the gap first1/5 width, and control the flow rate and flow rate of the spray gun. etc1~2 After curing for an hour, open the gaps on the inside and outside of the gap. The method is the same as above, but also open separately1/5 cannot be close to the foaming agent that is applied first in the middle of the gap. Leave some space for expansion and cannot be filled all at once.

Three, Foam caulk curing time

Foam caulkThe curing time is1~2hours (depending on the temperature, humidity and foaming agent of the surrounding environment (depending on the diameter), but the stabilization time after curing takes about 12more than 12 hours. Therefore, it is recommended that the door covers be finished. Foam agent, fixed wooden supports12 Remove it after an hour. The wedge between the door panel and the wall is permanent.

Four. Surface treatment of the substrate.

The surface of the door pocket and the wall on both sides of the gap must be cleaned of dust or oil. If conditions allow, spray mist on the wall surface A small amount of water is added to help the foaming agent cure and bond.

5. Product usage and storage environment

Foam caulking agentNormal use The ambient temperature is 5℃~35℃, storage temperature is 10℃~30℃, the storage environment should be ventilated and dry, and the product cannot be placed upside down or upside down. If the temperature is lower than 10℃ during use, it will affect the foaming amount and curing time. Therefore, it is recommended that the foaming agent be applied at low temperature and the product should be insulated before use (stored indoors at around 20℃)

6. Maintenance of the spray gun. (It is recommended that the spray gun be used and maintained by dedicated personnel during engineering applications)

The foaming agent was not continued the next day after each application. To use, the empty can should be removed, the remaining glue on the barrel should be removed, and then a special cleaning agent should be installed to clean the barrel. The cleaning agent should stay in the barrel during cleaning10 After about 10 minutes, the gun barrel residue is fully dissolved and then rinsed clean. If you need to continue using it the next day, there is no need to remove the tank, just close the empty valve and open it again when using.

Seven. Handling and transportation.

When handling and using, you should handle it with care, avoid violent collisions, and keep away from fire sources or high temperature environments.

Title of this article: Construction technology of Weigu polyurethane (PU) foam caulking agent for wooden doors

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