# US 10,478,346 B2 · Methods of handling adhesive laminate patches

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- Number: US 10,478,346 B2
- Document ID: US10478346B2
- Status: Granted
- Kind: B2
- Application number: 15/534,081
- Filed: 2015-12-08
- Published: 2018-12-27
- Granted: 2019-11-19
- Earliest claimed: 2014-12-18
- Assignees: 3M Innovative Properties Company
- Applicants: 3M Innovative Properties Company
- Inventors: Gordon P. Knutson
- Web page: https://patentgrep.com/patent/US10478346B2

## CPC

- A61F 13/15756: {Applying tabs, strips, tapes, loops; Knotting the ends of pads}
- A61F 13/00063: {comprising medicaments or additives, e.g. odor control, PH control, debriding, antimicrobic (drug delivery dressings A61K9/70; chemical aspect of the additives A61L15/00)}
- A61F 13/01029: {made of multiple layers}
- A61F 13/0276: {Apparatus or processes for manufacturing adhesive dressings or bandages}
- A61F 13/0289: {manufacturing of adhesive dressings}
- A61K 9/7038: {Transdermal patches of the drug-in-adhesive type, i.e. comprising drug in the skin-adhesive layer}
- A61L 15/58: Adhesives
- A61F 2013/008: {easy removing of the protection sheet}
- A61F 2013/00817: {handles or handling tabs}
- B29C 65/4825: {Pressure sensitive adhesives}
- B29C 65/7858: {characterised by the feeding movement of the parts to be joined}
- B29C 66/45: {Joining of substantially the whole surface of the articles (methods or apparatus for laminating B32B37/00)}
- B29C 66/472: {said single elements being substantially flat}
- B29C 66/80: {General aspects of machine operations or constructions and parts thereof}
- B32B 7/06: permitting easy separation
- B32B 37/025: {Transfer laminating}
- B32B 38/10: Removing layers, or parts of layers, mechanically or chemically
- B32B 38/12: Deep-drawing
- A61F: FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS (dental prosthetics A61C)
- A61K: PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES (devices or methods specially adapted for bringing pharmaceutical products into particular physical or administering forms A61J3/00; chemical aspects of, or use of materials for deodorisation of air, for disinfection or sterilisation, or for bandages, dressings, absorbent pads or surgical articles A61L; soap compositions C11D)
- A61L: METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES (preservation of bodies or disinfecting characterised by the agents employed A01N; preserving, e.g. sterilising, food or foodstuffs A23; preparations for medical, dental or toiletry purposes A61K)
- B29C: SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING (making preforms B29B11/00; making laminated products by combining previously unconnected layers which become one product whose layers will remain together B32B37/00 - B32B41/00)
- B32B: LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM

## Abstract

Methods of handling adhesive laminate patches. A first article, passed over a first supporting structure, includes disconnected adhesive laminate patches adhered to a first web, each patch being aligned over and adhered to a tab. A second web can be passed over a second supporting structure that is separated from the first supporting structure by a gap. The first article can be passed over the first supporting structure to lift a leading portion of a first tab and a first patch off of the first web together, such that the first tab facilitates transfer of the first patch across the gap. The first patch can then be adhered to the second web; and the second web can be advanced to transfer the first patch, and first tab, onto the second web to form a second article comprising patches aligned over tabs on the second web.

## Claims

### Claim 1

A method of handling adhesive laminate patches, the method comprising:
providing a first article comprising a plurality of disconnected adhesive laminate patches adhered to a first web, wherein each patch is aligned over and adhered to a tab in the first web, such that a leading edge of each tab is located adjacent a leading edge of each patch;
providing a first supporting structure and a second supporting structure positioned adjacent the first supporting structure, wherein the second supporting structure and the first supporting structure are separated by a gap;
leading a second web over the second supporting structure, wherein the second web has a release surface, and wherein the second web is oriented such that the release surface of the second web faces the first supporting structure;
passing the first article over the first supporting structure to cause a leading portion of a first tab and a leading portion of a first patch aligned over the first tab to lift off of the first web together in such a way that the leading portion of the first patch is supported by the first tab and extends across the gap between the first supporting structure and the second supporting structure;
adhering the leading portion of the first patch to the second web on the second supporting structure; and
advancing the second web on the second supporting structure to transfer the first patch from the first web to the second web to form a second article comprising a plurality of patches aligned over tabs on the second web, wherein the patches are spaced apart longitudinally on the second web.

### Claim 2 (depends on 1)

The method of claim 1, wherein providing a first article comprising a plurality of disconnected adhesive laminate patches adhered to a first web includes:
providing an adhesive laminate on a third supporting structure in such a way that the adhesive of the adhesive laminate faces away from the third supporting structure;
providing the first web comprising a plurality of partially-cut tabs arranged along a machine direction of the first web, the first web having a release surface;
providing a fourth supporting structure adjacent the third supporting structure;
leading the first web over the fourth supporting structure, wherein the first web is oriented such that the release surface of the first web faces the third supporting structure;
transferring the adhesive laminate from the third supporting structure onto the first web on the fourth supporting structure to form a precursor article comprising the adhesive laminate adhered to the release surface of the first web; and
cutting the adhesive laminate of the precursor article to form the plurality of disconnected adhesive laminate patches adhered to the first web.

### Claim 3 (depends on 2)

The method of claim 2, wherein cutting the adhesive laminate includes forming a non-patch weed adhered to the first web; and further comprising:
removing the non-patch weed from the adhesive laminate patches and the first web to form the first article comprising the plurality of disconnected adhesive laminate patches adhered to the first web.

### Claim 4 (depends on 2)

The method of claim 2, wherein providing an adhesive laminate on a third supporting structure in such a way that the adhesive of the adhesive laminate faces away from the third supporting structure includes:
providing the adhesive laminate releasably adhered to a starter web;
separating the adhesive laminate from the starter web and leading the adhesive laminate over the third supporting structure; and
wherein providing a first web comprising a plurality of partially-cut tabs includes:
cutting the starter web while it is separated from the adhesive laminate to form the plurality of partially-cut tabs.

### Claim 5 (depends on 4)

The method of claim 4, further comprising forming at least one longitudinal cut in the first web to form a plurality of ribbons, wherein each ribbon includes a plurality of partially-cut tabs arranged along the ribbon in the machine direction.

### Claim 6 (depends on 2)

The method of claim 2, further comprising:
providing the adhesive laminate releasably adhered to a starter web; and
separating the adhesive laminate from the starter web and leading the adhesive laminate over the first supporting structure.

### Claim 7 (depends on 2)

The method of claim 2, wherein providing the first web comprising a plurality of partially-cut tabs includes providing the first web comprising at least one longitudinal cut to form a plurality of ribbons, wherein each ribbon includes a plurality of partially-cut tabs arranged along the ribbon in the machine direction.

### Claim 8 (depends on 2)

The method of claim 2, wherein the plurality of partially-cut tabs in the first web are spaced from one another in at least one of the machine direction and a cross-machine direction.

### Claim 9 (depends on 2)

The method of claim 2, wherein cutting the adhesive laminate of the precursor article to form a plurality of disconnected adhesive laminate patches also finishes cutting out the plurality of partially-cut tabs in the first web.

### Claim 10 (depends on 2)

The method of claim 2, wherein each partially-cut tab is coupled to the first web via at least one tie point.

### Claim 11 (depends on 2)

The method of claim 2, wherein each tab is more rigid than its aligned adhesive laminate patch.

### Claim 12 (depends on 2)

The method of claim 2, wherein the first article includes the plurality of adhesive laminate patches spaced longitudinally from one another on the first web.

### Claim 13 (depends on 2)

The method of claim 2, wherein the first article includes the plurality of adhesive laminate patches positioned directly adjacent one another on the first web in at least one of the machine direction and a cross-machine direction.

### Claim 14 (depends on 1)

The method of claim 1, further comprising cutting the second web around each of the plurality of adhesive laminate patches to form a plurality of adhesive patch assemblies, the second web forming a release liner.

### Claim 15 (depends on 14)

The method of claim 14, wherein the release liner includes an overlay liner.