초록 ▼

Microcreping apparatus has an assembly of superposed sheet members which are pressed by presser means against a surface of a material being treated to compress the material against the surface of a drive roll preliminary to engagement of the material with a retarding means. The sheet member assembly

Microcreping apparatus has an assembly of superposed sheet members which are pressed by presser means against a surface of a material being treated to compress the material against the surface of a drive roll preliminary to engagement of the material with a retarding means. The sheet member assembly is supported as a cantilever by holder means to which at least the primary and outer sheet members of the assembly are connected by a plurality of pins on the holder means received in slots in the connected superposed sheet members spaced inwardly across the path of travel of the material adjacent the rearward edge of the sheet members. The slots extend transversely of the direction of travel of the material and have sufficient clearance from the pins to permit movement thereof relative to the pins corresponding to local expansion or contraction of the respective sheet members under heating and cooling respectively.

대표청구항 ▼

Apparatus for compressively treating traveling flexible sheet material, having a drive roll for advancing the material, retarder means engageable with the material driven by said roll, mechanism for compressing said material against the surface of said roll before engagement with said retarder means

Apparatus for compressively treating traveling flexible sheet material, having a drive roll for advancing the material, retarder means engageable with the material driven by said roll, mechanism for compressing said material against the surface of said roll before engagement with said retarder means comprising an assembly of superposed sheet members extending across the width of said material on said drive roll, including an inner primary member disposed closest to said drive roll and an outer member, holder means connected at least to said primary member and said outer member adjacent their edges disposed rearwardly in the direction of travel of the material to support said assembly as a cantilever, pressure means to apply adjustable pressure to said assembly to flex the suspended portion thereof toward said drive roll so that said primary member compresses said material against said drive roll surface, and means mounting said pressure means and holder means for movement into and out of operative position and for adjustment of relative position; wherein the connection of said holder means to sheet members of said assembly is by a plurality of pins on said holder means spaced across the direction of travel of the material and received in corresponding slots in said connected superposed sheet members adjacent their edge disposed rearwardly in said direction of travel, said slots extending transversely of said direction of travel and having sufficient clearance from said pins to permit movement thereof relative to said pins corresponding to local expansion of said connected sheet members by heat induced therein when the apparatus is operating and to local contraction thereof by cooling when said apparatus is not operating.