# US 11,078,383 B2 · Adhesive articles permitting damage free removal

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- Number: US 11,078,383 B2
- Document ID: US11078383B2
- Status: Granted
- Kind: B2
- Application number: 16/797,516
- Filed: 2020-02-21
- Published: 2020-06-18
- Granted: 2021-08-03
- Earliest claimed: 2017-08-25
- Assignees: 3M Innovative Properties Company
- Applicants: 3M Innovative Properties Company
- Inventors: Brett P. Krull; Dawud H. Tan; Saurabh Batra; Bryan L. Gerhardt; Stephen M. Sanocki
- Web page: https://patentgrep.com/patent/US11078383B2

## CPC

- C09J 7/20: characterised by their carriers
- C09J 7/21: Paper; Textile fabrics
- B32B 3/08: characterised by added members at particular parts {(layer formed of separate pieces of material which are juxtaposed side-by-side B32B3/14, B32B3/18)}
- B32B 3/20: of hollow pieces, e.g. tubes; of pieces with channels or cavities
- B32B 3/26: characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids {(foam layer B32B5/18; layer of synthetic resin characterised by fillers that create voids or cavities B32B27/205); characterised by an apertured layer}
- B32B 3/30: characterised by a layer formed with recesses or projections, e.g. {hollows, grooves, protuberances, ribs (apertured layer B32B3/266; layer with cavities or internal voids B32B3/26)}
- B32B 5/022: {Non-woven fabric}
- B32B 5/024: {Woven fabric}
- B32B 5/028: {Net structure, e.g. spaced apart filaments bonded at the crossing points}
- B32B 5/18: characterised by features of a layer {of} foamed material
- B32B 5/245: {another layer next to it being a foam layer}
- B32B 5/26: another layer {next to it} also being fibrous or filamentary {(relative arrangement of fibres or filaments of different layers B32B5/12)}
- B32B 5/32: {at least two} layers being foamed {and next to each other}
- B32B 7/05: the layers not being connected over the whole surface, e.g. discontinuous connection or patterned connection (using interposed adhesives or bonding materials applied in spaced arrangements B32B7/14)
- B32B 7/06: permitting easy separation
- B32B 7/12: using interposed adhesives or interposed materials with bonding properties
- B32B 9/005: {comprising one layer of ceramic material, e.g. porcelain, ceramic tile (layered products with at least two ceramic layers composed mainly of ceramic B32B18/00)}
- B32B 9/041: {of metal}
- B32B 9/045: {of synthetic resin}
- B32B 9/046: {of foam}
- B32B 9/047: {made of fibres or filaments}
- B32B 9/06: of paper or cardboard
- B32B 15/046: {of foam}
- B32B 15/082: comprising vinyl resins; comprising acrylic resins
- B32B 15/085: comprising polyolefins
- B32B 15/09: comprising polyesters
- B32B 15/095: comprising polyurethanes
- B32B 15/12: of paper or cardboard
- B32B 15/14: next to a fibrous or filamentary layer
- B32B 23/04: comprising such {cellulosic plastic} substance as the main or only constituent of a layer, {which is} next to another layer of {the same or of} a {different material (next to a glass layer B32B17/08)}
- B32B 23/042: {of metal}
- B32B 23/048: {of foam}
- B32B 23/06: of paper or cardboard
- B32B 23/08: of synthetic resin
- B32B 27/065: {of foam}
- B32B 27/08: of synthetic resin
- B32B 27/10: of paper or cardboard
- B32B 27/12: next to a fibrous or filamentary layer
- B32B 27/20: using fillers, pigments, thixotroping agents
- B32B 27/22: using plasticisers
- B32B 27/281: {comprising polyimides}
- B32B 27/285: {comprising polyethers}
- B32B 27/286: {comprising polysulphones; polysulfides}
- B32B 27/302: {comprising aromatic vinyl (co)polymers, e.g. styrenic (co)polymers}
- B32B 27/304: {comprising vinyl halide (co)polymers, e.g. PVC, PVDC, PVF, PVDF}
- B32B 27/306: {comprising vinyl acetate or vinyl alcohol (co)polymers}
- B32B 27/308: {comprising acrylic (co)polymers}
- B32B 27/32: comprising polyolefins {(comprising vinyl (co)polymers or acrylic (co)polymers B32B27/30)}
- B32B 27/325: {comprising polycycloolefins}
- B32B 27/36: comprising polyesters
- B32B 27/365: {comprising polycarbonates}
- B32B 27/40: comprising polyurethanes
- B32B 29/005: {next to another layer of paper or cardboard layer}
- B32B 29/007: {next to a foam layer}
- B32B 29/02: next to a fibrous or filamentary layer
- B32B 37/0084: {Point bonding}
- B32B 38/06: Embossing
- B32B 2255/10: on synthetic resin layer or on natural or synthetic rubber layer
- B32B 2255/205: Metallic coating
- B32B 2260/021: Fibrous or filamentary layer
- B32B 2260/046: Synthetic resin
- B32B 2262/0207: Elastomeric fibres
- B32B 2262/0223: Vinyl resin fibres
- B32B 2262/0253: Polyolefin fibres
- B32B 2262/0261: Polyamide fibres
- B32B 2262/0276: Polyester fibres
- B32B 2262/04: Cellulosic plastic fibres, e.g. rayon
- B32B 2262/062: Cellulose fibres, e.g. cotton
- B32B 2262/101: Glass fibres
- B32B 2262/105: Ceramic fibres
- B32B 2262/12: Conjugate fibres, e.g. core/sheath or side-by-side
- B32B 2262/14: Mixture of at least two fibres made of different materials
- B32B 2264/0207: Particles made of materials belonging to B32B25/00
- B32B 2264/0214: Particles made of materials belonging to B32B27/00
- B32B 2264/0242: Vinyl halide, e.g. PVC, PVDC, PVF or PVDF (co)polymers
- B32B 2264/067: Wood particles
- B32B 2264/101: Glass
- B32B 2264/102: Oxide or hydroxide
- B32B 2264/104: Oxysalt, e.g. carbonate, sulfate, phosphate or nitrate particles
- B32B 2264/105: Metal
- B32B 2264/107: Ceramic
- B32B 2264/108: Carbon, e.g. graphite particles
- B32B 2264/12: Mixture of at least two particles made of different materials
- B32B 2266/0214: Materials belonging to B32B27/00
- B32B 2266/12: Gel
- B32B 2270/00: Resin or rubber layer containing a blend of at least two different polymers
- B32B 2305/10: Fibres of continuous length
- B32B 2307/30: having particular thermal properties
- B32B 2307/41: Opaque
- B32B 2307/51: Elastic
- B32B 2307/54: Yield strength; Tensile strength
- B32B 2307/546: Flexural strength; Flexion stiffness
- B32B 2307/718: Weight, e.g. weight per square meter
- B32B 2307/732: Dimensional properties
- B32B 2307/748: Releasability
- B32B 2310/028: using vibration, e.g. sonic or ultrasonic
- B32B 2405/00: Adhesive articles, e.g. adhesive tapes
- C09J 5/00: Adhesive processes in general; Adhesive processes not provided for elsewhere, e.g. relating to primers
- C09J 2301/124: the adhesive layer being present on both sides of the carrier, e.g. double-sided adhesive tape
- C09J 2301/16: by the structure of the carrier layer
- C09J 2301/204: the adhesive coating being discontinuous
- C09J 2400/226: in the substrate
- C09J 2400/263: in the substrate
- C09J 2400/283: in the substrate
- C09J: ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES (preparation of glue or gelatine C09H)
- B32B: LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM

## Abstract

The present disclosure provides adhesive articles that can be removed from surfaces without damage by having reduced or eliminated contribution of a core backing to peel force generated by the adhesive during removal. In some instances, this can be accomplished by a core that loses structural integrity in a direction normal to a plane defined by a major surface. In other instances, the contribution is reduced by compromising the interface between the core and a peelable adhesive layer.

## Claims

### Claim 1

An adhesive article for mounting an object to a surface, the article comprising:
a first adhesive layer;
a core adjacent the first adhesive layer and defining a perimeter, the core comprising core material and including first and second major surfaces; and
a first arranged pattern of recesses on at least the first major surface of the core, each recess terminating in a membrane, wherein the membrane defines the bottom surface of the recess and comprises core material; and
an adhesive interface within the membrane, wherein the adhesive interface comprises contact between the first adhesive layer and the membrane,
wherein the article is configured such that removal of the article from an adherend at a peel angle exceeding 35 degrees results in at least one of delamination of the first adhesive layer from the first major surface of the core or degradation of the core.

### Claim 2 (depends on 1)

The adhesive article of claim 1, wherein the core comprises a non-woven material.

### Claim 3 (depends on 1)

The adhesive article of claim 1, wherein the membrane comprises consolidated core material.

### Claim 4 (depends on 3)

The adhesive article of claim 3, wherein the core material has a void volume, and wherein the void volume of the membrane is substantially less than a void volume of the core material in the interstitial spaces between adjacent recesses.

### Claim 5 (depends on 1)

The adhesive article of claim 1, wherein the membrane comprises a film of core material.

### Claim 6 (depends on 1)

The adhesive article of claim 1, wherein the membranes reside in one more planes substantially parallel to a plane coincident with the first major surface.

### Claim 7 (depends on 1)

The adhesive article of claim 1, wherein the first major surface includes interstitial spaces between recesses, wherein contact between the interstitial spaces and the first adhesive layer defines a first core interface, and wherein a Peel Ratio between the adhesive interface and the first core interface is at least 1.15:1.

### Claim 8 (depends on 1)

The adhesive article of claim 1, further comprising a second adhesive layer adjacent the second major surface.

### Claim 9 (depends on 1)

The adhesive article of claim 1, wherein the arranged pattern of recesses has a density of at least 20 recesses per square centimeter.

### Claim 10 (depends on 8)

The adhesive article of claim 8, and further including a second arranged pattern of recesses on the second major surface of the core, each recess of the second arranged pattern terminating in a membrane shared with a recess of the first arranged pattern, wherein the membrane defines the bottom surface of each the recess and comprises core material; and a second adhesive interface at the bottom surface of the recess of the second arranged pattern of recesses or within the membrane, wherein the second adhesive interface comprises contact between the second adhesive layer and the membrane.

### Claim 11 (depends on 1)

The adhesive article of claim 1, wherein the adhesive is ultrasonically bonded to the membrane.

### Claim 12 (depends on 1)

The adhesive article of claim 1, wherein the application of force in a direction normal to the core plane results in a loss of structural integrity within a portion of the core.

### Claim 13

An adhesive article for mounting an object to a surface, the article comprising:
a first adhesive layer comprising a first peelable adhesive composition:
a core adjacent the first adhesive layer and defining a perimeter, the core comprising porous core material having a first void volume and including first and second major surfaces; and
a first arranged pattern of recesses on at least the first major surface of the core, each recess terminating in a membrane comprising core material and having a second void volume less than the first void volume, the membrane defining a bottom surface of the recess,
wherein the first peelable adhesive composition is at least partially within the pores of each membrane, and
wherein the article is configured such that removal of the article from an adherend at a peel angle exceeding 35 degrees results in at least one of delamination of the first adhesive layer from the first major surface of the core or degradation of the core.

### Claim 14 (depends on 13)

The adhesive article of claim 13, wherein the core comprises a non-woven fabric, and wherein the first adhesive composition at least partially infiltrates the pores of the core material having the first void volume adjacent the membrane.