Minnesota Mining and Manufacturing Company

3m Innovative Properties Company

Mark S Vogel

Kim K Tsujimoto

Gregory Francis Stifter

Timothy A Mertens

Bernard Raymond Pierre

Frederic Pierre Le Riche

Michael D Crandall

Alden R Miles

Dale O Bailey

Frederick J Gustafson

Lori A Bilski

Don Everett Branch

Eric Francis Baertich

Frederic Pierre Alain Le Riche

A method of making a repositionable transfer adhesive is provided. The method includes the steps of (a) providing a release liner having opposing first and second surfaces, the first surface having a release value of at least 10 grams per inch, as measured according to the Tape Release Test, lower than the second surface; (b) providing an adhesive composition comprising microsphere adhesive and a binder adhesive; (c) coating the adhesive composition on the first surface of the release liner such that the microspheres protrude from the binder adhesive; (d) drying the adhesive composition to yield a microsphere transfer adhesive; (e) winding the release liner such that the microsphere transfer adhesive is wound inwardly and the second surface of the liner contacts the microspheres; and (f) applying pressure to the second surface of the liner.

Method of making a microsphere transfer adhesive

A web of sheet material has a plurality of longitudinal rows of indicia patterns printed on a front face thereon, with the indicia patterns all aligned on the web in common readability orientation. On its back face, the web has a plurality of longitudinally disposed patterns of repositionable pressure sensitive adhesive thereon, with the adhesive patterns being oriented in registration with the rows of indicia patterns. Longitudinal severing of the web thus results in a plurality of identical web strips. Lateral severing of the web strips results in a plurality of identical note sheets, each note sheet bearing one of the indicia patterns on its front face and a pattern of repositionable pressure sensitive adhesive on its back face. The note sheets are applied in registration to an advertising piece to create a promotional assembly. In this process, unique intermediate rolls of the web and web strips are developed. The web strips are provided in linerless form, or may be carried on a liner sheet for further processing and application to an advertising piece.

Repositionable note sheets and method of formation thereof

Sheets to be coated with water-based coating material, for example a primer and a low adhesion backsize, are supplied from a feeder (1), in end-to-end overlapping relationship, to a dual coater (3) in which the sheets are coated individually on both sides. A sheet inserter (2) is provided, upstream of the dual coater, to insert sheets from a second supply into the sheets from the feeder (1). The dual coated sheets are dried as individual sheets or as a pseudo-web of overlapped sheets, The sheets are then overlapped, unless previously overlapped, and the direction of overlap changed, if necessary, to provide the trailing edge of each sheet on top of the leading edge of each succeeding sheet. The overlapped sheets are conveyed through an adhesive transfer station (7) where stripes (236) of at least partially dried adhesive are coated onto the dual coated sheets from a transfer belt (71).

Apparatus and method for applying coating materials to individual sheet

Sheets to be coated with water-based coating material, for example a primer and a low adhesion backsize, are supplied from a feeder (1), in end-to-end overlapping relationship, to a dual coater (3) in which the sheets are coated individually on both sides. A sheet inserter (2) is provided, upstream of the dual coater, to insert sheets from a second supply into the sheets from the feeder (1). The dual coated sheets are dried as individual sheets or as a pseudo-web of overlapped sheets. The sheets are then overlapped, unless previously overlapped, and the direction of overlap changed, if necessary, to provide the trailing edge of each sheet on top of the leading edge of each succeeding sheet. The overlapped sheets are conveyed through an adhesive transfer station (7) where stripes (236) of at least partially dried adhesive are coated onto the dual coated sheets from a transfer belt (71).

This invention describes water-based microsphere adhesive formulations to be used in the sheet-to-sheet coating process. These adhesives have proven to have excellent wet-out of a difficult, high-energy surface, good shear stability to allow die-coating or gravure-coating of the adhesive onto an intermediate carrier belt, good elasticity to allow the wet adhesive to cling to the intermediate belt until it is dried (or partially dried), good integrity to allow complete transfer from the intermediate carrier belt onto the final substrate, and repositionable properties in a final product composition.

Waterbased microsphere adhesives for sheet-to-sheet coating process

A printer note construction consisting of repositionable adhesive coated (discontinuously) substrates removably affixed onto a backsheet, such that the construction can pass through a personal computer printer without damage to the printer or to the article (wrinkling, tearing, folding, releasing, etc.). Typically, this construction would be pre-assembled and packaged in a manner similar to point of sale label stock. Alternatively, a preprinted backsheet template wherein, repositionable notes (such as Post-it.RTM. brand notes) from a typical pad of notes, are aligned with the template markings and then run through a personal computer printer.

Desktop printer notes

A method for making custom printed notes or note pads. One or more sheet assemblies are provided which have first and second sheets and a pattern of pressure-sensitive adhesive on the rear major surface of each of the sheets that contacts and is releasably adhered to the rear major surface of the other sheet only in nonadhesive areas. Indicia is printed on the front major surfaces of the sheets using a conventional copy machine. The sheets can either be cut along predetermined lines to form the custom printed notes, or the sheets of a plurality of such printed sheet assemblies can be separated, stacked to adhere the patterns of pressure-sensitive adhesive on the rear major surfaces of the sheets to the front major surfaces of the sheets with the edges of the sheets in a predetermined orientation with respect to each other, and the stacked sheets can be cut along predetermined lines to form custom printed note pads.

Note or note pad preparation method

A method for making custom printed notes or note pads. One or more sheet assemblies are provided which have first and second sheets and a pattern of pressure-sensitive adhesive on the rear major surface of each of the sheets that contacts and is releasably adhered to the rear major surface of the other sheet only in nonadhesive areas. Indicia is printed on the front major surfaces of the sheets using a conventional copy machine. The sheets can then either be cut along predetermined lines to form the custom printed notes, or the sheets of a plurality of such printed sheet assemblies can be separated, stacked to adhere the patterns of pressure-sensitive adhesive on the rear major surfaces of the sheets to the front major surfaces of the sheets with the edges of the sheets in a predetermined orientation with respect to each other; and the stacked sheets can be cut along predetermined lines to form custom printed note pads.

Growing community of inventors

Maplewood, MN, United States of America

Mark S Vogel