Composite base material and adhesive film
First Claim
1. A film-like composite 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 said first resin film, said second resin film including a needle-like whiskers filler, characterized in that said second resin film breaks before said first resin film when stretched.
1 Assignment
0 Petitions
Accused Products
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.
11 Citations
10 Claims
- 1. A film-like composite 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 said first resin film, said second resin film including a needle-like whiskers filler, characterized in that said second resin film breaks before said first resin film when stretched.
- 4. An adhesive film characterized by comprising a film-like composite 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 said first resin film, and an adhesive layer formed on at least one side of said composite base material, wherein said second resin film includes a dispersed filler in a form of needle-like whiskers, characterized in that said second resin film breaks before said first resin film when stretched.
Specification