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Polycarbonates such as Makrolon/TUFFAK (Makrolon is now known as TUFFAK) efforts to emulate Acrylics inherent attributes need to utilize coatings. Once coating is scratched or broken then UV is allowed to damage the polycarbonate sheet internally.


Optically clear Low distortion


Abrasion resistance Wrinkle free Sewable Rollable


5 year warranty


Makrolon Makrolon Makrolon AquaGlas® Marine 5 √


AR √


coated √ √


no *


no


√ √


coated √ √


no no


Curved applications .080/30”,.060/20” no Bent applications


Proven performance Buffable


Color distortion heat blocking


enhanced night vision glare reduction


no no


new failed curves no


no no no


VR


√ √


not √ √ ?


** √ ? ?


no


(1) inherent to polycarbonate no no no


no no no


Acrylic √





inherent √


no no ? ?


heat


since 2009 difficult no no no no


*warranty covers breakage, microcracks over .5” when more that 25% of entire panel when seen from distance of 3’, yellowing of 5 points. **warranty for breakage only if it breaks in a brittle manner into separate pcs with sharp edges. ***warranty that light transmittance of panel will not change by more that 3% over a period of Eight years. (1)


clear2sea™ clear2seauv™ cool2sea™ Acrylic √


Acrylic √





inherent √


no no


8yrs***


.080/18” heat





inherent √


no no


8yrs*** .080/18” heat


since 2011 since 2011 yes no no no no


yes no no no no


Acrylic √





inherent √


no no


8yrs*** .080/18” heat


since 1989 yes no


yes yes yes


Inherent to polycarbonate; when looking through polycarbonate with polarized glasses, at extreme angles and various light conditions one may see a rainbow effect of colors similar to that of oil on water.


enclosure. From the outside it is easily identified by its green hue, however, from the inside looking out this hue is not evident. Additional properties imparted include reduction of glare and enhanced night vision. It is exclusively available through members of the 4U2SEA™ Fraternity of fabricators. It is a modified acrylic to the extent that buffing scratches out remains relatively easy.


The clear is only one component of an enclosure. As one advances to the longer life products, other components need to advance as well, or it will be for naught. High end enclosures should be constructed with lifetime threads so they will not have to be re-stitched during that lifetime. Border fabrics need to be of sufficient quality to survive the years as well. Currently zippers are the weakest link but


The Report • March 2019 • Issue 87 | 75


some companies take steps during fabrication to insure the longest life possible out of them. One thing to note; if one zipper goes bad, its time to replace all.


Have Questions? Feel free to contact me. Jeff Smith (Pioneer of the Rigid Enclosure) Website: http://www.4u2sea.com/cool.php Email: Jeff@cy4ez.com | +1-410-507-1122


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