# US 11,898,069 B2 · Adhesive articles permitting damage free removal

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- Number: US 11,898,069 B2
- Document ID: US11898069B2
- Status: Granted
- Kind: B2
- Application number: 17/364,976
- Filed: 2021-07-01
- Published: 2021-10-21
- Granted: 2024-02-13
- 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/US11898069B2

## 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

A method for making an adhesive article, the method comprising:
providing a core having first and second opposing major surfaces and including a consolidatable core material;
positioning a peelable adhesive on at least one of the major surfaces;
during or after the positioning of the peelable adhesive, forming the adhesive article by consolidating a plurality of discrete regions of the core material to form consolidated discrete regions in the core in an arranged pattern of recesses, wherein the adhesive article is configured such that removal of the adhesive article from an adherend at a peel angle exceeding 35 degrees results in at least one of delamination of the peelable adhesive from the core or degradation of the core; and
wherein the peelable adhesive contacts each of the consolidated discrete regions of the core.

### Claim 2 (depends on 1)

The method of claim 1, wherein positioning the peelable adhesive on at least one of the major surfaces occurs during the consolidating step.

### Claim 3 (depends on 1)

The method of claim 1, wherein the consolidating step comprises pattern embossing at least the core material at the plurality of discrete regions.

### Claim 4 (depends on 1)

The method of claim 1, wherein consolidating the plurality of discrete regions of the core material to form the arranged pattern of recesses comprises creating an arranged pattern of channels across at least one of the first and second major surfaces of the core.

### Claim 5 (depends on 1)

The method of claim 1, wherein the consolidating comprises ultrasonic point bonding.

### Claim 6 (depends on 1)

The method of claim 1, wherein positioning the peelable adhesive on at least one of the major surfaces forms a core-adhesive interface on a major surface of the core.

### Claim 7 (depends on 1)

The method of claim 1, wherein the consolidating step creates interstitial space between the recesses, and wherein contact between the peelable adhesive layer and the interstitial spaces forms a core interface.

### Claim 8 (depends on 1)

The method of claim 1, and further comprising bonding the second major surface of the core to a hardgood.

### Claim 9 (depends on 1)

The method of claim 1, wherein the arranged pattern of recesses on the core includes an array of discrete recesses.

### Claim 10 (depends on 1)

The method of claim 1, wherein the arranged pattern of recesses comprises an arranged pattern of channels across at least one of the first or second major surfaces of the core.