# US 5,705,566 A · Adhesive with additive delivery system

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- Number: US 5,705,566 A
- Document ID: US5705566A
- Status: Granted
- Kind: A
- Application number: 08/699,395
- Filed: 1996-08-19
- Granted: 1998-01-06
- Earliest claimed: 1995-09-08
- Assignees: Transhield Technology AS
- Inventors: Gregory L. Todt
- Web page: https://patentgrep.com/patent/US5705566A

## CPC

- B32B 7/12: using interposed adhesives or interposed materials with bonding properties
- B32B 5/022: {Non-woven fabric}
- B32B 27/12: next to a fibrous or filamentary layer
- B32B 27/18: characterised by the use of special additives
- B32B 27/306: {comprising vinyl acetate or vinyl alcohol (co)polymers}
- B32B 27/32: comprising polyolefins {(comprising vinyl (co)polymers or acrylic (co)polymers B32B27/30)}
- C08L 53/00: Compositions of block copolymers containing at least one sequence of a polymer obtained by reactions only involving carbon-to-carbon unsaturated bonds; Compositions of derivatives of such polymers
- C09J 11/00: Features of adhesives not provided for in group C09J9/00, e.g. additives
- C09J 153/00: Adhesives based on block copolymers containing at least one sequence of a polymer obtained by reactions only involving carbon-to-carbon unsaturated bonds; Adhesives based on derivatives of such polymers
- C23F 11/02: in air or gases by adding vapour phase inhibitors
- Y10T 428/28: Web or sheet containing structurally defined element or component and having an adhesive outermost layer
- B32B: LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- C08L: COMPOSITIONS OF MACROMOLECULAR COMPOUNDS (compositions based on polymerisable monomers C08F, C08G; artificial filaments or fibres D01F; textile treating compositions D06)
- 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)
- C23F: NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE (working metal by laser beams B23K26/00; desurfacing by applying flames B23K7/00; working of metal by electro-erosion B23H; producing decorative effects by removing surface material, e.g. by engraving, by etching, B44C1/22; electrolytic etching or polishing C25F); INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25
- Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION

## Abstract

An adhesive mixture includes a block copolymer hot melt adhesive and particles of a vapor corrosion inhibitor mixed therein to protect products against corrosion. The adhesive is used to seal flaps of containers together, secure carpet to the floor of a vehicle, secure nonwoven fabric to a shrink film so that the additive is released when the shrink film is shrunk around a product to be protected, or used as an adhesive on a tape, so that the product is protected when the tape is wrapped around the product.

## Claims

### Claim 1

Adhesive mixture comprising a block copolymer hot melt adhesive and a vapor releasing vapor corrosion inhibitor mixed with the block copolymer hot melt adhesive, said vapor corrosion inhibitor being in the form of particles suspended in said adhesive composition, said particles having a maximum dimension of less than about 30 microns.

### Claim 2 (depends on 1)

Adhesive mixture as claimed in claim 1, wherein said vapor corrosion inhibitor is about 5% to about 20% by weight of the adhesive mixture.

### Claim 3 (depends on 1)

Adhesive mixture as claimed in claim 1, wherein said block copolymer hot melt adhesive is a mixture of thermoplastic rubber, tackifiers, plasticizers and mineral oil.

### Claim 4

Adhesive mixture for securing packaging components together and for delivering an additive to a product within a volume defined by the packaging components comprising a block copolymer hot melt adhesive and a vapor releasing vapor corrosion inhibitor mixed with the block copolymer hot melt adhesive, said vapor corrosion inhibitor being in the form of particles suspended in said adhesive composition, said particles having a maximum dimension of less than about 30 microns.

### Claim 5 (depends on 4)

Adhesive mixture as claimed in claim 4, wherein said vapor corrosion inhibitor is about 5% to about 20% by weight of the adhesive mixture.

### Claim 6 (depends on 4)

Adhesive mixture as claimed in claim 4, wherein said block copolymer hot melt adhesive is a mixture of thermoplastic rubber, tackifiers, plasticizers and mineral oil.

### Claim 7

Method of manufacturing an adhesive mixture comprising the steps of reducing the particle size of the particles of a particulate vapor corrosion inhibitor to a maximum dimension of about 30 microns, and then mixing the vapor corrosion inhibitor with a block copolymer hot melt adhesive.

### Claim 8 (depends on 7)

Method of manufacturing an adhesive mixture as claimed in claim 7, wherein said particles are placed in a chamber and cooled to a temperature at least sufficient to reduce the humidity in the chamber to a minimal amount before the particles are reduced in size.

### Claim 9 (depends on 7)

Method of manufacturing an adhesive mixture as claimed in claim 7, wherein said particles are reduced in size by using a pressure jet to impel the particles against one another within a chamber and then classifying the particles out of the chamber after they reach a predetermined maximum size.

### Claim 10 (depends on 7)

Method of manufacturing an adhesive mixture as claimed in claim 7, wherein said method includes the steps of combining thermoplastic rubber, tackifiers, plasticizers and mineral oil, reducing the mixture by heating, and blending in the particles of vapor corrosion inhibitors as the mixture is being reduced.

### Claim 11 (depends on 7)

Method of manufacturing an adhesive mixture as claimed in claim 7, wherein said method includes the steps of combining thermoplastic rubber, tackifiers, plasticizers and mineral oil, and blending the particles of vapor corrosion inhibitors into the mineral oil before combining the mineral oil into the mixture.
