What is the difference between vinyl and polyurethane for vacuum bags?
Polyurethane is more resilient than most vinyl. Its superb flexibility allows it to retain its shape even when stretched to the extremes which makes it good for curved projects. On the flip side, polyurethane can be considerably more expensive than vinyl and most polyurethane films can not be bonded with HH-66 cement. The good news is that VeneerSupplies.com has an affordable polyurethane material that will bond with HH-66. For more information about polyurethane vs. vinyl for vacuum bagging, click here.
Polyurethane vacuum bags last significantly longer than vinyl bags. With everyday use, vinyl has a tendency to develop tears and pinholes (which can be repaired). Polyurethane bags can withstand much more use and abuse because it is chemically engineered to be elastic. This elasticity is what makes it more puncture resistant than vinyl and allows it to retain its shape even when stretched to the extremes which makes it good for curved projects. Additionally, polyurethane has a much greater “memory”. In other words, it goes back to its original shape after being stretched. On the flip side, polyurethane can be considerably more expensive than vinyl and most polyurethane films can not be bonded with HH-66 cement. The good news is that VeneerSupplies.com has an affordable polyurethane material that will bond with HH-66. For more information about polyurethane vs. vinyl for vacuum bagging, click here.
