# US 6,296,904 B1 · Painter's masking tape and its use

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- Number: US 6,296,904 B1
- Document ID: US6296904B1
- Status: Granted
- Kind: B1
- Application number: 09/294,857
- Filed: 1999-04-20
- Granted: 2001-10-02
- Earliest claimed: 1998-04-29
- Assignees: Beiersdorf AG
- Inventors: Dieter Zimmermann
- Web page: https://patentgrep.com/patent/US6296904B1

## CPC

- C09J 7/21: Paper; Textile fabrics
- C09J 7/38: Pressure-sensitive adhesives [PSA]
- C09J 2203/31: as a masking tape for painting
- C09J 2301/122: the adhesive layer being present only on one side of the carrier, e.g. single-sided adhesive tape
- C09J 2301/302: the adhesive being pressure-sensitive, i.e. tacky at temperatures inferior to 30°C
- C09J 2301/308: the adhesive tape or sheet losing adhesive strength when being stretched, e.g. stretch adhesive
- C09J 2400/263: in the substrate
- Y10T 428/28: Web or sheet containing structurally defined element or component and having an adhesive outermost layer
- Y10T 428/2883: including addition polymer of diene monomer [e.g., SBR, SIS, etc.]
- Y10T 442/2754: Pressure-sensitive adhesive
- Y10T 442/60: Nonwoven fabric [i.e., nonwoven strand or fiber material]
- Y10T 442/601: Nonwoven fabric has an elastic quality
- Y10T 442/674: Nonwoven fabric with a preformed polymeric film or sheet
- Y10T 442/679: Natural or synthetic rubber sheet or film
- Y10T 442/699: Including particulate material other than strand or fiber material
- 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)
- Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION

## Abstract

Use of an adhesive film which is detachable by pulling in the direction of the bond plane and a) whose self-adhesive composition is based on thermoplastic rubber and tackifying resins, the said adhesive film having high elasticity and low plasticity, the adhesion being lower than the cohesion, the adhesiveness largely disappearing when the film is extended and the ratio of peel force to tear load being 1:1.5 or more, and b) which carries an extensible nonwoven laminated onto one side of the adhesive composition, as a painter's decorative tape which can be removed again by pulling without residue or damage.

## Claims

### Claim 1

A method of painting a surface, said method comprising the following steps:
a) providing a masking tape comprising:
i) a self-adhesive composition based on thermoplastic rubber and tackifying resins; and
ii) an extensible nonwoven adhered to one side of said self-adhesive composition;
the masking tape capable of being detached from a surface to which it is adhered by pulling on the masking tape in the direction of the plane of the bond formed between the masking tape and the surface;
b) applying said masking tape to said surface to mask said surface;
c) painting said surface;
d) removing said masking tape from said surface by pulling on the masking tape in the direction of the plane of the bond formed between the masking tape and said surface;
e) separating paint-soiled nonwoven from said adhesive composition during or following step d); and
f) disposing of said paint-soiled nonwoven separately from said adhesive composition.

### Claim 2 (depends on 1)

The method according to claim 1, wherein the self-adhesive composition comprises one or more ingredients selected from the group consisting of antioxidants, UV stabilizers, colorants, fillers and auxiliaries.

### Claim 3 (depends on 1)

The method according to claim 1, wherein the self-adhesive composition is formed as a film having a thickness of 0.3-0.4 mm.

### Claim 4 (depends on 1)

The method according to claim 1, wherein the nonwoven has a basis weight of 10-40 g/m2.

### Claim 5 (depends on 1)

The method according to claim 1, wherein the nonwoven has a basis weight of 15-25 g/m2.

### Claim 6 (depends on 1)

The method according to claim 1, wherein the nonwoven is a polymeric nonwoven.

### Claim 7 (depends on 1)

The method according to claim 1, wherein the masking tape is not applied to said surface in a straight-line.