Glass processing protective film capable of being directly cut and preparation method thereof

Abstract

The invention provides a glass processing protective film capable of being directly cut and a preparation method of the glass processing protective film capable of being directly cut. The protective film comprises a PET film 1, a glue layer 2, a photohardened layer 3, an elastic bonding layer 4 and a bottom paper layer 5. The glass processing protective film capable of being directly cut disclosedby the invention has better protection performances, can effectively prevent the generation of debris, fragments and micro-cracks in the glass processing process, and can be directly cut on the basisof film covering without residues.

Description

technical field

[0001] The invention belongs to the field of film materials, and in particular relates to a directly cuttable glass processing protective film and a preparation method thereof. Background technique

[0002] Carbide or diamond cutters are usually used in traditional coated glass cutting methods, and the cutting process is divided into two steps: the first step is to use a diamond tip or a carbide grinding wheel to create a crack on the surface of the glass; second The first step is to use mechanical means to separate the glass along the crack line.

[0003] However, scoring and cutting using this method results in chips, chips and micro-cracks that reduce the strength of the cutting edge and require an additional cleaning step.

[0004] Therefore, how to avoid the generation of debris, fragments and micro-cracks in the cutting process is a technical problem that those skilled in the art need to solve at present. Contents of the invention

[0005] The inven...

Examples

Embodiment 1

[0025] A method for preparing a directly cuttable glass processing protective film, comprising the following steps:

[0026] (1) A layer of acrylic pressure-sensitive adhesive is coated on the surface of 20um PET film 1 to form a glue layer 2 of 5um, with 110 parts of aliphatic urethane acrylate oligomer, 35 parts of cyclohexyl acrylate, 15 parts of more Ether amine, pour 350 parts of ethanol into the mixer, add 0.03 parts of photoinitiator, fully stir for 20 minutes to disperse, apply it on the glue layer 2 by scraping, and dry it to form a 20um The photohardening layer 3 is standby; the molecular weight of the polyetheramine is 230;

[0027] (2) Put 15 parts of polyvinyl alcohol, 1.5 parts of nano-alumina, 15 parts of natural latex, and 15 parts of methacrylate copolymer in a high-speed mixer, and after fully stirring for 7 hours, coat it on the photohardening surface. A 10um elastic adhesive layer 4 is formed on the layer 3, and the bottom paper layer 5 can be pasted; the ...

Embodiment 2

[0029] A method for preparing a directly cuttable glass processing protective film, comprising the following steps:

[0030] (1) A layer of acrylic pressure-sensitive adhesive is coated on the surface of 20um PET film 1 to form a glue layer 2 of 5um, with 100 parts of aliphatic urethane acrylate oligomer, 40 parts of cyclohexyl acrylate, more than 10 parts Ether amine, pour 400 parts of ethanol into the mixer, add 0.01 part of photoinitiator, fully stir for 20 minutes to disperse, apply it on the glue layer 2 by scraping, and dry it to form a 20um The photohardening layer 3 is standby; the molecular weight of the polyetheramine is 230;

[0031] (3) Put 20 parts of polyvinyl alcohol, 1 part of nano-alumina, 20 parts of natural latex, and 10 parts of methacrylate copolymer in a high-speed mixer, and after fully stirring for 8 hours, coat it on the photohardening surface. A 10um elastic adhesive layer 4 is formed on the layer, and the bottom paper layer 5 can be pasted; the poly...

Embodiment 3

[0033] A method for preparing a directly cuttable glass processing protective film, comprising the following steps:

[0034] (1) A layer of acrylic pressure-sensitive adhesive is coated on the surface of 20um PET film 1 to form a glue layer 2 of 5um, with 120 parts of aliphatic urethane acrylate oligomers, 30 parts of cyclohexyl acrylate, 20 parts of more For ether amine, pour 300 parts of ethanol into the mixer, add 0.05 parts of photoinitiator, fully stir for 20 minutes to disperse, apply it on the glue layer by scraping, and dry it to form a 20um The photohardening layer 3 is ready for use; the molecular weight of the polyetheramine is 230;

[0035] (3) Put 10 parts of polyvinyl alcohol, 2 parts of nano-alumina, 10 parts of natural latex, and 20 parts of methacrylate copolymer in a high-speed mixer, and after fully stirring for 6 hours, coat it on the photohardening surface. A 10um elastic adhesive layer 4 is formed on the layer 3, and the bottom paper layer 5 can be paste...

technical field

[0001] The invention belongs to the field of film materials, and in particular relates to a directly cuttable glass processing protective film and a preparation method thereof. Background technique

[0002] Carbide or diamond cutters are usually used in traditional coated glass cutting methods, and the cutting process is divided into two steps: the first step is to use a diamond tip or a carbide grinding wheel to create a crack on the surface of the glass; second The first step is to use mechanical means to separate the glass along the crack line.

[0003] However, scoring and cutting using this method results in chips, chips and micro-cracks that reduce the strength of the cutting edge and require an additional cleaning step.

[0004] Therefore, how to avoid the generation of debris, fragments and micro-cracks in the cutting process is a technical problem that those skilled in the art need to solve at present. Contents of the invention

[0005] The inven...

Examples

Embodiment 1

[0025] A method for preparing a directly cuttable glass processing protective film, comprising the following steps:

[0026] (1) A layer of acrylic pressure-sensitive adhesive is coated on the surface of 20um PET film 1 to form a glue layer 2 of 5um, with 110 parts of aliphatic urethane acrylate oligomer, 35 parts of cyclohexyl acrylate, 15 parts of more Ether amine, pour 350 parts of ethanol into the mixer, add 0.03 parts of photoinitiator, fully stir for 20 minutes to disperse, apply it on the glue layer 2 by scraping, and dry it to form a 20um The photohardening layer 3 is standby; the molecular weight of the polyetheramine is 230;

[0027] (2) Put 15 parts of polyvinyl alcohol, 1.5 parts of nano-alumina, 15 parts of natural latex, and 15 parts of methacrylate copolymer in a high-speed mixer, and after fully stirring for 7 hours, coat it on the photohardening surface. A 10um elastic adhesive layer 4 is formed on the layer 3, and the bottom paper layer 5 can be pasted; the ...

Embodiment 2

[0029] A method for preparing a directly cuttable glass processing protective film, comprising the following steps:

[0030] (1) A layer of acrylic pressure-sensitive adhesive is coated on the surface of 20um PET film 1 to form a glue layer 2 of 5um, with 100 parts of aliphatic urethane acrylate oligomer, 40 parts of cyclohexyl acrylate, more than 10 parts Ether amine, pour 400 parts of ethanol into the mixer, add 0.01 part of photoinitiator, fully stir for 20 minutes to disperse, apply it on the glue layer 2 by scraping, and dry it to form a 20um The photohardening layer 3 is standby; the molecular weight of the polyetheramine is 230;

[0031] (3) Put 20 parts of polyvinyl alcohol, 1 part of nano-alumina, 20 parts of natural latex, and 10 parts of methacrylate copolymer in a high-speed mixer, and after fully stirring for 8 hours, coat it on the photohardening surface. A 10um elastic adhesive layer 4 is formed on the layer, and the bottom paper layer 5 can be pasted; the poly...

Embodiment 3

[0033] A method for preparing a directly cuttable glass processing protective film, comprising the following steps:

[0034] (1) A layer of acrylic pressure-sensitive adhesive is coated on the surface of 20um PET film 1 to form a glue layer 2 of 5um, with 120 parts of aliphatic urethane acrylate oligomers, 30 parts of cyclohexyl acrylate, 20 parts of more For ether amine, pour 300 parts of ethanol into the mixer, add 0.05 parts of photoinitiator, fully stir for 20 minutes to disperse, apply it on the glue layer by scraping, and dry it to form a 20um The photohardening layer 3 is ready for use; the molecular weight of the polyetheramine is 230;

[0035] (3) Put 10 parts of polyvinyl alcohol, 2 parts of nano-alumina, 10 parts of natural latex, and 20 parts of methacrylate copolymer in a high-speed mixer, and after fully stirring for 6 hours, coat it on the photohardening surface. A 10um elastic adhesive layer 4 is formed on the layer 3, and the bottom paper layer 5 can be paste...

Images