Patent ID: 7462256

Claim:
A clamp to superpose and hold together at least two flexible polymeric films while they are optically sealed or cut by at least a laser beam, the clamp comprising: two jaws wherein at least one of said jaws can be moved to allow a closing and an opening of the clamp, one of said jaws being an optical jaw, having an optical window free of contact with the area to let said at least one laser beam pass through it and wherein said window is wide enough to allow to optically seal or cut the whole width of said films if required; and the other one of said jaws being a contact jaw, to bring the films into contact about an area of said films to be sealed/cut, the contact jaw having a reflective surface to divide at least a portion of an intensity of the at least one laser beam that has not been absorbed by the films into at least two reflected laser beams each for being re-injected back to a different portion of the area of the films to increase a light intensity absorbed by the films at each portion.