Surface protection film and method for manufacturing organic light emitting electronic device
Disclosed relates to a surface protective film including: a base layer; and an adhesive layer provided on one surface of the base layer, where the adhesive layer comprises a cured product of an adhesive composition, comprising: a urethane polymer; an acrylic polymer; and a curing agent, where the acrylic polymer comprises a monomer unit derived from an alkyl(meth)acrylate monomer having 10 or more carbon atoms, where a peel strength of the adhesive layer is 2 gf/in or more and 30 gf/in or less when a surface of the adhesive layer, opposite to a surface on which the base layer is provided, is peeled off from glass at a peel speed of 30 m/min and a peel angle of 180°, and where, in the adhesive composition, the acrylic polymer is comprised in an amount of 1 part by weight to 15 parts by weight based on 100 parts by weight of the urethane polymer.
1. A surface protective film comprising:
a base layer; and
an adhesive layer provided on one surface of the base layer,
wherein the adhesive layer comprises a cured product of an adhesive composition, comprising: a urethane polymer; an acrylic polymer; and a curing agent,
wherein the acrylic polymer comprises a monomer unit derived from an alkyl(meth)acrylate monomer having 10 or more carbon atoms,
wherein a peel strength of the adhesive layer is 2 gf/in or more and 30 gf/in or less when a surface of the adhesive layer, opposite to a surface on which the base layer is provided, is peeled off from glass at a peel speed of 30 m/min and a peel angle of 180°, and
wherein, in the adhesive composition, the acrylic polymer is comprised in an amount of 1 part by weight to 15 parts by weight based on 100 parts by weight of the urethane polymer.
2. The surface protective film of claim 1 , wherein, in the adhesive composition, the curing agent is comprised in an amount of 1 part by weight to 25 parts by weight based on 100 parts by weight of the urethane polymer.
3. The surface protective film of claim 1 , the monomer unit derived from wherein the alkyl(meth)acrylate monomer having 10 or more carbon atoms is comprised in an amount of 1 wt % to 20 wt % based on a total amount of the monomer units comprised in the acrylic polymer.
4. The surface protective film of claim 1 , wherein the acrylic polymer comprises a monomer unit derived from a (meth)acrylate monomer comprising a hydroxyl group.
5. The surface protective film of claim 4 , wherein the monomer unit derived from the (meth)acrylate monomer comprising the hydroxyl group is comprised in an amount of 1 wt % to 20 wt % based on a total amount of the monomer units comprised in the acrylic polymer.
6. The surface protective film of claim 1 , wherein the acrylic polymer has a hydroxyl group value of 5 mgKOH/g to 40 mgKOH/g.
7. The surface protective film of claim 1 , wherein the urethane polymer has a weight average molecular weight of 60,000 g/mol to 160,000 g/mol.
8. A surface protective film comprising:
a base layer; and
an adhesive layer provided on one surface of the base layer,
wherein the adhesive layer comprises a cured product of an adhesive composition, comprising: a urethane polymer; an acrylic polymer; and a curing agent,
wherein the acrylic polymer comprises a monomer unit derived from an alkyl(meth)acrylate monomer having 10 or more carbon atoms,
wherein a peel strength of the adhesive layer is 2 gf/in or more and 30 gf/in or less when a surface of the adhesive layer, opposite to a surface on which the base layer is provided, is peeled off from glass at a peel speed of 30 m/min and a peel angle of 180°, and
wherein the acrylic polymer has a weight average molecular weight of 10,000 g/mol to 70,000 g/mol.
9. The surface protective film of claim 1 , A surface protective film comprising:
a base layer; and
an adhesive layer provided on one surface of the base layer,
wherein the adhesive layer comprises a cured product of an adhesive composition, comprising: a urethane polymer; an acrylic polymer; and a curing agent,
wherein the acrylic polymer comprises a monomer unit derived from an alkyl(meth)acrylate monomer having 10 or more carbon atoms,
wherein a peel strength of the adhesive layer is 2 gf/in or more and 30 gf/in or less when a surface of the adhesive layer, opposite to a surface on which the base layer is provided, is peeled off from glass at a peel speed of 30 m/min and a peel angle of 180°,
wherein the base layer comprises a base film; and a first anti-static layer and a second anti-static layer respectively provided on both surfaces of the base film, and
wherein the adhesive layer is provided on a surface of the second anti-static layer, which is opposite to a surface on which the base film is provided.
10. A surface protective film comprising:
a base layer; and
an adhesive layer provided on one surface of the base layer,
wherein the adhesive layer comprises a cured product of an adhesive composition, comprising: a urethane polymer; an acrylic polymer; and a curing agent,
wherein the acrylic polymer comprises a monomer unit derived from an alkyl(meth)acrylate monomer having 10 or more carbon atoms,
wherein a peel strength of the adhesive layer is 2 gf/in or more and 30 gf/in or less when a surface of the adhesive layer, opposite to a surface on which the base layer is provided, is peeled off from glass at a peel speed of 30 m/min and a peel angle of 180°,
wherein the surface protective film further comprises a protective layer provided on a surface of the adhesive layer, which is opposite to a surface on which the base layer is provided,
wherein the protective layer comprises: a protective film; and a third anti-static layer and a fourth anti-static layer respectively provided on both surfaces of the protective film, and
wherein the adhesive layer is provided on a surface of the third anti-static layer, which is opposite to a surface on which the protective film is provided.
11. A method for manufacturing an organic light emitting electronic device, the method comprising:
attaching an adhesive layer of the surface protective film of claim 1 onto an encapsulation layer of an organic light emitting element.
12. The method of claim 11 , wherein the organic light emitting element sequentially comprises a back plate, a plastic substrate, a thin film transistor, an organic light emitting diode, and an encapsulation layer.
13. The method of claim 11 , further comprising: peeling off the surface protective film from the encapsulation layer; and stacking a touch screen panel and a cover window on the encapsulation layer.