series of rolls designated 30 through 39 the rolls 30 39 control the tension and remove wrinkles from film 20a 22a and 45a after passing through rolls 16 18 the combined film 23 39 passes over water cooled rolls 40 42 where it is cooled before being wound on driven roll 44 fig4 shows film thickness of the combined film 23 39 after embossing and fusing of separate films 20a 22a and 45a in operation three sheets of film 20a 22a and 45a are passed between the hot embossing roll 14 and the cool backup roll under controlled pressure temperature and speed at this point the pattern is pressed in and the three sheets are fused together any variation in any one variable and the pattern is lost and the films do not fuse together a typical run speed for a combination of two 0 002 inch thick films with a 0 0007 inch thick transparent film is from 0 75 to 1 5 yds minute the temperature of the embossing roll surface is between 360 u00b0 and 390 u00b0 f the temperature of the surface of the backup roll can be no higher than 170 u00b0 f and the pressure between the rolls is between 400 and 430.