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Class Information
Number: 493/228
Name: Manufacturing container or tube from paper; or other manufacturing from a sheet or web > Container making > Pliable container (e.g., bag, envelope, etc.) > With cutting, breaking, tearing, or abrading > Including form-scoring
Description: Method or apparatus comprising (a) pressing a line in one surface of a workpiece and thereby raising a corresponding line on the opposite surface; or, (b) pressing a line in one surface of a workpiece with no significant change in the opposite surface configuration, wherein the material of the workpiece under that line becomes compacted, such that there is no thinning flow of the workpiece.

Sub-classes under this class:

Class Number Class Name Patents
493/229 Notching of work edge 12
493/230 Partial severance to form interconnected products 13

Patents under this class:

Patent Number Title Of Patent Date Issued
8663081 Folding score and method and apparatus for forming the same Mar. 4, 2014
7614497 Display/vending carton Nov. 10, 2009
7396320 Pre-folded and pre-glued flower wrap sheets and methods for making Jul. 8, 2008
7081080 Stack of fan folded material and combinations thereof Jul. 25, 2006
7037250 Method of forming a burst-resistant easy-open corner in a heavy duty bag May. 2, 2006
6935996 Drink pouches and methods for producing them Aug. 30, 2005
6565499 Automatic machine for slitting and creasing paperboard sheets and the like May. 20, 2003
6561962 Line plastic bag machine May. 13, 2003
6286680 Pack of bags made of a thermoplastic foil and method for producing the pack of bags Sep. 11, 2001
6056681 Apparatus for forming flat-bottomed plastic bags May. 2, 2000
5759145 Tearability imparting apparatus Jun. 2, 1998
RE33880 Pouch or sack for packing and laminate film therefor and method for producing the pouch Apr. 14, 1992
4992128 Method of making holder for flat objects such as computer disks Feb. 12, 1991
4789350 Method and apparatus for manufacturing mailing envelopes or bags Dec. 6, 1988
4731048 Method of making envelope and letter assembly with business letter fold Mar. 15, 1988
4642973 Apparatus for fabricating dual compartment powder cartridge Feb. 17, 1987
4531993 High speed method of making envelopes each with a double folded removable enclosure Jul. 30, 1985
4530730 Method of making envelope assemblies Jul. 23, 1985
4530731 High speed method of making envelopes each with a separate enclosure Jul. 23, 1985
4401427 Thermoplastic bags and method of making Aug. 30, 1983
4254693 Process and apparatus for manufacturing sheet packaging material for containers Mar. 10, 1981
4232593 Improvements in and relating to the manufacture of record sleeves Nov. 11, 1980
4184413 Apparatus for manufacturing a bag and delivering a bag in an open configuration to a check-out counter Jan. 22, 1980

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