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Class Information
Number: 493/418
Name: Manufacturing container or tube from paper; or other manufacturing from a sheet or web > Bending > Folding > With means to advance work or product > Folding by direct application of vacuum or fluid
Description: Method or apparatus including (a) application of reduced pressure to certain portions of a sheet or web workpiece so that atmospheric pressure acting on an opposing portion thereof effects the stress to form a crease line in the workpiece; or, (b) application of increased pressure from a flowable medium to effect the stress to form a crease line in the workpiece.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7452320 |
Presentation and bonding of garment side panels |
Nov. 18, 2008 |
| 7452321 |
High speed interfolder |
Nov. 18, 2008 |
| 7399266 |
Method and machine for folding and finishing training pant diapers |
Jul. 15, 2008 |
| 7335150 |
Apparatus for making pre-fastened absorbent undergarments |
Feb. 26, 2008 |
| 7322925 |
Apparatus and method for making pre-fastened absorbent undergarments |
Jan. 29, 2008 |
| 7314440 |
Former for a strip-producing or strip-processing machine |
Jan. 1, 2008 |
| 7254930 |
Stationary tucker bar mechanism |
Aug. 14, 2007 |
| 7214174 |
Apparatus for folding a nonbonded nonwoven web |
May. 8, 2007 |
| 7069970 |
Apparatus for forming a lap seam |
Jul. 4, 2006 |
| 7008363 |
Apparatus and methods for folding a nonbonded nonwoven web |
Mar. 7, 2006 |
| 7001320 |
Process for producing hinge-lid boxes |
Feb. 21, 2006 |
| 6945924 |
Method for conveying folded sheet elements |
Sep. 20, 2005 |
| 6893388 |
Method of dynamically pre-fastening a disposable absorbent article having a slot-and-tab fastening system |
May. 17, 2005 |
| 6840616 |
Air folder adjuster apparatus and method |
Jan. 11, 2005 |
| 6808478 |
System and method for producing folded articles |
Oct. 26, 2004 |
| 6773387 |
Vacuum cleaning folding rail |
Aug. 10, 2004 |
| 6723035 |
Method of tucking side panels with side panel fold location control |
Apr. 20, 2004 |
| 6679034 |
Vertical stand-up pouch quick change module |
Jan. 20, 2004 |
| 6673003 |
Vacuum cleaning folding rail |
Jan. 6, 2004 |
| 6638202 |
Bag turning device |
Oct. 28, 2003 |
| 6612974 |
Adjustable folding station for cards |
Sep. 2, 2003 |
| 6572520 |
Apparatus for transporting envelope blanks in an envelope making machine |
Jun. 3, 2003 |
| 6514187 |
Folding and manufacture of pants |
Feb. 4, 2003 |
| 6440053 |
Apparatus for folding pluralities of product webs advancing along parallel paths |
Aug. 27, 2002 |
| 5921908 |
Folding device and method for folding flat pieces of laundry in longitudinal direction |
Jul. 13, 1999 |
| 5915319 |
Method and apparatus for producing a hemmed, folded, and seamed finished workpiece |
Jun. 29, 1999 |
| 5865135 |
Method and apparatus for producing a hemmed folded and seamed finished workpiece |
Feb. 2, 1999 |
| 5842964 |
Sheet folding apparatus with vacuum grip |
Dec. 1, 1998 |
| 5797831 |
Vacuum hold down folder/gluers and process |
Aug. 25, 1998 |
| 5779614 |
Method and apparatus for folding toy balloons |
Jul. 14, 1998 |
| 5716312 |
Vacuum cylinder |
Feb. 10, 1998 |
| 5658230 |
Device for producing a protective layer for toilet seats |
Aug. 19, 1997 |
| 5624366 |
Laundry sheet folding apparatus |
Apr. 29, 1997 |
| 5556360 |
High production folder construction |
Sep. 17, 1996 |
| 5435802 |
Folder construction |
Jul. 25, 1995 |
| 5419796 |
Method of fluting a corrugating medium |
May. 30, 1995 |
| 5336042 |
Palletizer with cap forming |
Aug. 9, 1994 |
| 5334128 |
Apparatus and method for folding over an edge portion of thin sheet |
Aug. 2, 1994 |
| 5300007 |
Folder construction |
Apr. 5, 1994 |
| 5197722 |
Cloth folding device with airblower for uncurling ends |
Mar. 30, 1993 |
| 5147273 |
Method and apparatus for producing stacks of interleaved material sheets |
Sep. 15, 1992 |
| 5108017 |
Sleeve flip over device |
Apr. 28, 1992 |
| 5094658 |
Vacuum side-folder section for envelope blank folding apparatus |
Mar. 10, 1992 |
| 5045044 |
Method and device for folding a paper web |
Sep. 3, 1991 |
| 5015317 |
Method and apparatus for making a multi-cellular collapsible shade |
May. 14, 1991 |
| 5004451 |
Folding apparatus with improved web transport |
Apr. 2, 1991 |
| 5000729 |
Bag folding machine |
Mar. 19, 1991 |
| 4917664 |
Fluted roll for a corrugated board manufacturing machine |
Apr. 17, 1990 |
| 4857039 |
Flexible material folding apparatus |
Aug. 15, 1989 |
| 4850949 |
Apparatus for folding a band into accordion pleats including three panels |
Jul. 25, 1989 |
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