Plate mounting instructions

The heart of the R/bak® compressible plate mounting system is an advanced urethane foam with an open-cell construction that offers exceptional energy absorption and resiliency.
It acts as a pressure reducer and shock absorber for flexographoc printing plates in corrugated applications.

The science behind the art of better flexographic results

The big quality difference between R/bak® cushion mounting materials and other cushions can be best seen by taking a microscopic look inside the foam. Open-cell urethane bounces back over and over again so that the material provides the same level of cushioning no matter how many times it is compressed.

Closed-cell polyethylene breaks down in use, not bouncing back and resulting in loss of ink density.

Open-cell urethane structure (magnified 100 times) naturally
bounces back to deliver consistent results. See below.

Higher print quality
R/bak® materials provide a high degree of surface conformity with minimal increase in plate pressure. The result is lower dot gain, cleaner reverse print, improved registration, fewer dropouts and higher quality impressions at increased press speeds.

Improved Handling
Lighter thin plates with shorter processing times.

Increased press speeds without bounce
Eliminating bounce allows increased throughput and ends double strikes.

Longer plate life
With less than 2% conpression set, R/bak materials reduce plate wear by continually absorbing impact.

Reduced costs/Improved profits
Less waste and lower component wear means more impressions at a lower cost for you.