Fremgangsmåde og apparat til fremstilling af laminater med luftfyldte celler mellem lagene.

摘要

1397582 Embossing SEALED AIR CORP 7 June 1972 [8 June 1971] 18601/74 Divided out of 1397581 Heading B6J A mount for supporting two embossing rollers 73, 731 so that one can be moved into an operative position as the other is moved out of it comprises two pairs of parallel, coplanar arms 74 on which the rollers are rotatably supported, each pair being pivoted on a support 76, and means for rotating the arms to move the rollers as desired, and is associated with a lift 123 for engaging the non-operative roller and lowering it, upon release from the arms, away from the mount. As shown, the rollers 73, 731 are associated with pressure rollers 100, 1001 and idler rollers 99, 991 and 101, 1011, the rollers cooperating to produce a cellular laminate. The embossing and pressure rollers 73, 100 are driven from a motor 109 via gears 112, 113 and the shaft 114 of roller 73 is connected to detachable inlets and outlets for supplying temperature-controlling fluid and to a vacuum outlet (see Figs. 8-9, not shown). Corresponding drive means and connections are provided for rollers 731, 1001. The arms 74 are supported on a shaft 118 which is rotated by hand through worm gearing 120, 121 to bring roller 73 out of and roller 731 into the operative position. The non- operative roller can then be removed by positioning the lift 123 below it, operating an hydraulic cylinder 127 to engage plates 130 with the roller shaft, and removing the bearing block 1051.