Cap Resins

MacDermid's M Cap 45 and FC 55 HR-R cap resins are used in combination with most MacDermid liquid photopolymer base resins to increase the overall tone range and print capability of a printing plate. Capping technology involves the casting of a very thin layer of harder cap resin over a softer base resin. The imaging characteristics of the cap resin create a print surface in the final plate with near vertical side walls that minimizes dot gain. Under impression, the harder cap resin recedes into the softer base rather than distorting, leaving a clean, sharp image.

Specific benefits to using a cap with liquid photopolymer:

Non-distorting print surface; highlight dots stay sharp under impression to minimize dot gain
Dramatic reduction in fluting in corrugated print applications
Wider impression latitude
Reduction in plate wear
Improved tone range reproduction: 1-95%, 175 lpi with HIT base photopolymer.
Deeper reverses, crisper text and sharper fine lines
Ability to combine solid and halftone copy in a single plate

M Cap 45
FC 55HR-R

M Cap 45

MacDermid M Cap 45 liquid photopolymer is a 45 durometer (Shore A) cap resin designed primarily for corrugated printing applications.

FC 55HR-R

MacDermid FC 55HR-R liquid photopolymer is a 55 durometer (Shore A) cap resin. It is used in conjunction with either a softer or harder base resin to produce capped printing plates for high quality and process color printing.