Stock material or miscellaneous articles – Layer or component removable to expose adhesive – Sectional layer removable
Patent
1997-05-23
1998-08-04
Thomas, Alexander
Stock material or miscellaneous articles
Layer or component removable to expose adhesive
Sectional layer removable
428 43, 428136, 283 71, B32B 310
Patent
active
057890501
ABSTRACT:
A paper product has a first sheet with a pattern of spaced openings permitting separation into sections and a second sheet releasably attached to the first sheet with a pattern of continuous curvilinear openings dividing the sheet into sections and being aligned with the openings of the first sheet. A die sheet for a die for cutting material includes a die sheet surface with a die pattern extending outwardly from the die sheet surface. The die pattern has slitting sections providing curvilinear, continuous openings through a second sheet of the material and spaced perforating sections extending above the slitting sections providing a pattern of spaced openings in the first sheet adjacent to the openings through the second sheet. A first method of constructing a die sheet includes covering a die surface with a first, spaced pattern of a first photo-resist material and then covering the first pattern with a second, continuous pattern of a second photo-resist material. A chemical removes material from sections not covered by the second pattern and the second pattern is then removed. A chemical removes material from die surface sections not covered by the first pattern. A second method of constructing a die sheet includes covering sections of a die surface with a pattern of photo-resist material having alternating slitting segments and wider perforating segments. A chemical removes material from uncovered sections and completely undercuts the slitting segments to form slitting sections and undercuts the perforating segments to form higher extending perforating sections.
REFERENCES:
patent: 3257885 (1966-06-01), Hornung
patent: 3706626 (1972-12-01), Smith et al.
patent: 3744384 (1973-07-01), Jarritt et al.
patent: 3850059 (1974-11-01), Kang
patent: 3937109 (1976-02-01), Korner et al.
patent: 4393738 (1983-07-01), Heyden
patent: 4561355 (1985-12-01), Cuir et al.
patent: 5488889 (1996-02-01), Kang
Michael Baddke, Riverboats Will Be New Self-Adhesive, Stamp News, Jul. 15, 1996.
Michael Schreiber, Backing of Self-Stick Test Stamps is Die Cut; Single Stamps, Blocks Are Easily Separated, Stamp News, Jun. 24, 1996.
Thomas Alexander
Xynatech, Inc.
LandOfFree
Perforating and slitting die sheet, methods of constructing same does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Perforating and slitting die sheet, methods of constructing same, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Perforating and slitting die sheet, methods of constructing same will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1174926