Process for preparing construction articles with cured pressure-sensitive adhesives
A process for forming a construction composite, the process comprising (i) providing a construction article having an adhesive coating layer of a curable pressure-sensitive adhesive; and (ii) subjecting the curable pressure-sensitive adhesive to UV radiation, where the amount of UV radiation imparted to the upper surface of the adhesive coating layer is from about 75 to about 125 millijoule/cm2, and where at least 60% of the radiation rays contributing to this power have an intensity of at least 200 milliWatts/cm2.
1. A process for forming a construction composite, the process comprising:
i. providing a construction article having an adhesive coating layer of a curable pressure-sensitive adhesive; and
ii. subjecting the curable pressure-sensitive adhesive to UV radiation, where the amount of UV radiation imparted to an upper surface of the adhesive coating layer is from about 75 to about 125 millijoule/cm 2 , and where at least 60% of the radiation rays contributing to this power have an intensity of at least 200 milliWatts/cm 2 .
2. The process of claim 1 , where the amount of UV radiation imparted to the upper surface of the adhesive coating layer is from about 80 to about 120 millijoule/cm 2 .
3. The process of claim 1 , where the amount of UV radiation imparted to the upper surface of the adhesive coating layer is from about 85 to about 115 millijoule/cm 2 .
4. The process of claim 1 , where the amount of UV radiation imparted to the upper surface of the adhesive coating layer is from about 90 to about 120 millijoule/cm 2 .
5. The process of claim 1 , where the UV radiation is in the form of UVC radiation.
6. The process of claim 1 , where at least 70% of the UV radiation imparted to the upper surface of the adhesive layer is contributed by UV radiation having an intensity of at least 200 milliWatts/cm 2 .
7. The process of claim 1 , where at least 55% of the UV radiation imparted to the upper surface of the adhesive layer is contributed by UV radiation having an intensity of at least 250 milliWatts/cm 2 .
8. The process of claim 1 , where at least 65% of the UV radiation imparted to the upper surface of the adhesive layer is contributed by UV radiation having an intensity of at least 250 milliWatts/cm 2 .
9. The process of claim 1 , where at least 50% of the UV radiation imparted to the upper surface of the adhesive layer is contributed by UV radiation having an intensity of at least 300 milliWatts/cm 2 .
10. The process of claim 1 , where at least 60% of the UV radiation imparted to the upper surface of the adhesive layer is contributed by UV radiation having an intensity of at least 300 milliWatts/cm 2 .
11. The process of claim 1 , where the time the upper surface of the adhesive layer is subjected to the UV radiation is less than 50 seconds.
12. The process of claim 1 , where the time the upper surface of the adhesive layer is subjected to the UV radiation is less than 40 seconds.
13. The process of claim 1 , where the time the upper surface of the adhesive layer is subjected to the UV radiation is from about 0.12 to about 50 seconds.
14. The process of claim 1 , where the adhesive coating layer has a thickness of at least 102 μm.
15. The process of claim 1 , where the adhesive coating layer has a thickness of at least 127 μm.
16. The process of claim 1 , where the construction article is a membrane panel, and where the adhesive coating layer is disposed on a planar surface of the membrane panel.
17. The process of claim 1 , further comprising:
employing an aperture plate which includes an aperture opening for passing therethrough the UV radiation imparted to the upper surface of the adhesive coating layer.