Composite base material and adhesive film

Details Composite base material and adhesive film Composite base material and adhesive film

2007-02-20

2007-02-20

Zirker, Daniel (Department: 1771)

Stock material or miscellaneous articles

Web or sheet containing structurally defined element or...

Adhesive outermost layer

C428S3550AC, C428S343000, C442S149000, C442S151000, C248S205300

Reexamination Certificate

active

10220768

ABSTRACT:
To provide an adhesive film that can be easily released leaving substantially no adhesive residue and without damaging the adherend surface when released from an adherend. A base material comprising at least a first resin film with a breaking elongation in the lengthwise direction of 300 to 1500% and a breaking strength of at least 2 kg/12 mm, and a second resin film with a lower breaking elongation and a higher flexural modulus than the first resin film is used. The second resin film can break before the first resin film when the base material is stretched.

REFERENCES:
patent: 4024312 (1977-05-01), Korpman
patent: 4237889 (1980-12-01), Gobran
patent: 4652473 (1987-03-01), Han
patent: 4741948 (1988-05-01), Konishi et al.
patent: 61108524 (1986-05-01), None
patent: WO 91/15365 (1991-10-01), None
patent: WO 92/11333 (1992-07-01), None
patent: WO 95 06691 (1995-03-01), None
patent: WO 98/02306 (1998-01-01), None

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