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Class Information
Number: 156/474
Name: Adhesive bonding and miscellaneous chemical manufacture > Surface bonding means and/or assembly means therefor > With bending, folding, winding, or wrapping means > For an indefinite or running length flexible web > Pleating means
Description: Apparatus having means causing the web to be progressively and repeatedly folded back on itself to produce a zig-zag folded product.

Patents under this class:
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Patent Number Title Of Patent Date Issued
8272418 Apparatus, system, and method for manufacturing irregularly shaped panel filters Sep. 25, 2012
8114291 Pleated single phase filter coalescer element and method Feb. 14, 2012
7972406 Diesel particulate filter and method of making Jul. 5, 2011
7235115 Method of forming self-supporting pleated filter media Jun. 26, 2007
6946012 Filter and forming system Sep. 20, 2005
6913059 Ceramic fiber-based filter web and method Jul. 5, 2005
6635136 Method for producing materials having z-direction fibers and folds Oct. 21, 2003
6615893 Filter forming and joining apparatus Sep. 9, 2003
6616785 Filter forming and joining method Sep. 9, 2003
6548147 Apparatus and process for producing a corrugated web and an absorbent article comprising a corrugated web Apr. 15, 2003
6524359 Filter bag for a pocket air filter and method for the production thereof Feb. 25, 2003
6230776 Apparatus for forming fibrous filter media May. 15, 2001
6230777 Filter forming and joining apparatus May. 15, 2001
6159318 Method for forming fibrous filter media, filter units and product Dec. 12, 2000
6010548 Spaced pocket filter assembly and method of manufacturing same Jan. 4, 2000
5961778 Corrugating apparatus Oct. 5, 1999
5894044 Honeycomb structure and method of making Apr. 13, 1999
5868889 Process for manufacturing a fluid filter Feb. 9, 1999
5853528 Method for manufacturing laminates and apparatus performing the method Dec. 29, 1998
5830311 Corrugating apparatus Nov. 3, 1998
5804073 Method of making a pleated structure having a pleated memory shape and the filter media made therefrom Sep. 8, 1998
5782791 Method of manufacturing a fluid filter Jul. 21, 1998
5709771 Method and apparatus for forming an expandable-collapsible article having a contoured surface Jan. 20, 1998
5622583 Method of producing a filter insert Apr. 22, 1997
5545284 Apparatus for manufacturing laminate for honeycomb structure Aug. 13, 1996
5545274 Artificial flower making apparatus, method of making the same and artificial flower made thereby Aug. 13, 1996
5476558 Waste paper destruction apparatus for forming paper blocks out of waste paper Dec. 19, 1995
5472606 Self-supporting, pleated, spirally wound filter Dec. 5, 1995
5429744 Spacer elements between membrane surfaces of a fluid purifier, and a method for their manufacture Jul. 4, 1995
5423937 Device for making blind having Y-shaped pleats Jun. 13, 1995
5405483 Apparatus for forming pleated material Apr. 11, 1995
5395465 Method for manufacturing laminate for honeycomb structure Mar. 7, 1995
5389188 Apparatus for, forming pleats in a sheet material Feb. 14, 1995
5376218 Device for manufacturing a filter Dec. 27, 1994
5350473 Cover forming apparatus having pivoting forming members Sep. 27, 1994
5286319 Ultrasonic pleat welding machine Feb. 15, 1994
5275677 Separator of corrugated paper and method Jan. 4, 1994
5185052 High speed pleating apparatus Feb. 9, 1993
5160563 Method and apparatus for making an expandable cellular shade Nov. 3, 1992
5151151 Pleating machine for dual fluted shade Sep. 29, 1992
5135461 Method and apparatus for creasing a web to form a multi-cellular collapsible shade Aug. 4, 1992
5120376 Method and apparatus for manufacture of a light-proof and folded window curtain Jun. 9, 1992
5084178 Corrugated filter arrangement with support layer and flow channels Jan. 28, 1992
5015317 Method and apparatus for making a multi-cellular collapsible shade May. 14, 1991
5007977 Method and apparatus for applying a strip to the planar contour-prepared edge of a rotating lens Apr. 16, 1991
4999073 Honeycomb pleater Mar. 12, 1991
4986863 Process for producing a laminated tubular fibrous structure for use as reinforcing structure for a composite piece Jan. 22, 1991
4976677 Process for the production of filters, and a filter produced by the process Dec. 11, 1990
4948445 Method and apparatus for making a corrugated fiberboard honeycomb structure Aug. 14, 1990
4940500 Filter medium forming system and process Jul. 10, 1990

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