A matte release film

Abstract

The invention relates to a matt release film. The matt release film comprises a base film and a matt release coating layer arranged at one side of the base film; and the matt release coating layer is formed by coating a fluorine-containing thermosetting coating, and the coating comprises fluorine series resin, acrylic resin, aldehyde ketone resin, a curing agent system, an assistant, a delustering agent and a mixed solvent. The matt release film has the advantages of low surface tension, good adhesiveness and overcoatability, excellent heat and solvent resistance, and high residual adhesion rate and excellent matt effect after peeling when the matt release film is used in the field of electron manufacturing.

Description

technical field

[0001] The invention relates to a release film, in particular to a matte release film suitable for the field of electronic manufacturing. Background technique

[0002] Release film, also known as peeling film, isolation film, etc., refers to a film with a separable surface. The release film is not sticky or slightly sticky after contacting a specific material under limited conditions. At present, the products on the release film market are generally based on PET tape base, and the surface is coated with a release agent layer as the main body, which protects the subsequent coating, and can be torn off when used.

[0003] However, 95% of the current coating materials in the market are made of silicone coatings. With the wide application in the market, silicones are still not suitable for some fields. For example, materials containing silicones are generally not suitable for the electronic circuit manufacturing industry. , because the residual silicone bonded d...

Examples

preparation example Construction

[0070] The present invention provides the preparation method of the thermosetting coating of above-mentioned release film, it comprises the following steps:

[0071] Mix part of organic mixed solvent 1 with organic fluorine resin, stir at room temperature, add melamine resin, aldehyde and ketone resin, acrylic resin, etc. in turn while stirring, stir evenly, and slowly add matting agent and dispersant at the same time, you can get Resin mixture paste. The focus of preparing the main ingredient is to control the speed of mixing and resin addition to avoid foaming or gelling. The obtained resin mixture slurry is uniform and thick without gelling, foaming or agglomeration.

[0072] Put the above resin mixture slurry into the sand mill for sand grinding several times, control the sand grinding speed at 2-4L / min, add antistatic agent during the grinding process, control the overall temperature of the sand mill below 40°C, select the corresponding The filter core is filtered to obt...

Embodiment 1

[0079] Fluorine resin HLR-1 3.0kg

[0080] Acrylic 170B 3.0kg

[0081] Aldehyde Resin KR-120 1.0kg

[0082] Curing agent amino resin A03 2.0kg

[0083] Curing agent blocked isocyanate 1358A 1.0kg

[0084] Auxiliary p-toluenesulfonic acid PTSA 0.2kg

[0085] Auxiliary antistatic agent SN 0.3kg

[0086] Auxiliary Dispersant DISPERBYK-110 0.3kg

[0087] Mixed solvent 1 Toluene: Butanone: Cyclohexanone=4:6:1 1.0kg

[0088] Mixed solvent 2 isopropanol: methyl ethyl ketone = 4:1 1kg

[0089] Matting agent Silica (particle size 1-3μm) 1.5kg

[0090] Matting agent Titanium dioxide (particle size 1.0-3.0μm) 1.5kg;

[0091] in:

[0092] Fluorine resin HLR-1 has a hydroxyl value of 50, an acid value of 1-5, and a number average molecular weight of 6000-25000

[0093] Acrylic resin 170B has a hydroxyl value of 120mgKOH / g and an acid value of 15 mgKOH / g

[0094] The coating solution was coated on a 125 micron thick PET substrate. The above release layer slurry is coated by an ani...

Embodiment 2

[0097] Fluorine resin HLR-1 4.0kg

[0098] Acrylic 170E 3.0kg

[0099] Aldehyde Resin A81 2.0kg

[0100] Curing agent amino resin A03 2.0kg

[0101] Curing agent isocyanate 1358A 0.5kg

[0102] Auxiliary PTSA 0.2kg

[0103] Auxiliary antistatic agent SN 0.2kg

[0104] Auxiliary Dispersant DISPERBYK-110 0.2kg

[0105] Mixed solvent 1 Toluene: Butanone: Cyclohexanone=4:6:1 11.0kg

[0106] Mixed solvent 2 isopropanol: methyl ethyl ketone = 4:1 1.0kg

[0107] Silica (particle size 2-4μm) 1.0kg

[0108] Titanium dioxide (particle size 1.0-3.0μm) 1.5kg;

[0109] in:

[0110] Fluorine resin HLR-1 has a hydroxyl value of 50, an acid value of 1-5, and a number average molecular weight of 6000-25000

[0111] The hydroxyl value of acrylic resin 170E is 86mgKOH / g, and the acid value can be 9-15 mgKOH / g

[0112] On the PET substrate with a thickness of 50 μm, the above-mentioned release layer slurry is coated by three rolls, and fully dried and solidified to obtain a release pro...

technical field

[0001] The invention relates to a release film, in particular to a matte release film suitable for the field of electronic manufacturing. Background technique

[0002] Release film, also known as peeling film, isolation film, etc., refers to a film with a separable surface. The release film is not sticky or slightly sticky after contacting a specific material under limited conditions. At present, the products on the release film market are generally based on PET tape base, and the surface is coated with a release agent layer as the main body, which protects the subsequent coating, and can be torn off when used.

[0003] However, 95% of the current coating materials in the market are made of silicone coatings. With the wide application in the market, silicones are still not suitable for some fields. For example, materials containing silicones are generally not suitable for the electronic circuit manufacturing industry. , because the residual silicone bonded d...

Examples

preparation example Construction

[0070] The present invention provides the preparation method of the thermosetting coating of above-mentioned release film, it comprises the following steps:

[0071] Mix part of organic mixed solvent 1 with organic fluorine resin, stir at room temperature, add melamine resin, aldehyde and ketone resin, acrylic resin, etc. in turn while stirring, stir evenly, and slowly add matting agent and dispersant at the same time, you can get Resin mixture paste. The focus of preparing the main ingredient is to control the speed of mixing and resin addition to avoid foaming or gelling. The obtained resin mixture slurry is uniform and thick without gelling, foaming or agglomeration.

[0072] Put the above resin mixture slurry into the sand mill for sand grinding several times, control the sand grinding speed at 2-4L / min, add antistatic agent during the grinding process, control the overall temperature of the sand mill below 40°C, select the corresponding The filter core is filtered to obt...

Embodiment 1

[0079] Fluorine resin HLR-1 3.0kg

[0080] Acrylic 170B 3.0kg

[0081] Aldehyde Resin KR-120 1.0kg

[0082] Curing agent amino resin A03 2.0kg

[0083] Curing agent blocked isocyanate 1358A 1.0kg

[0084] Auxiliary p-toluenesulfonic acid PTSA 0.2kg

[0085] Auxiliary antistatic agent SN 0.3kg

[0086] Auxiliary Dispersant DISPERBYK-110 0.3kg

[0087] Mixed solvent 1 Toluene: Butanone: Cyclohexanone=4:6:1 1.0kg

[0088] Mixed solvent 2 isopropanol: methyl ethyl ketone = 4:1 1kg

[0089] Matting agent Silica (particle size 1-3μm) 1.5kg

[0090] Matting agent Titanium dioxide (particle size 1.0-3.0μm) 1.5kg;

[0091] in:

[0092] Fluorine resin HLR-1 has a hydroxyl value of 50, an acid value of 1-5, and a number average molecular weight of 6000-25000

[0093] Acrylic resin 170B has a hydroxyl value of 120mgKOH / g and an acid value of 15 mgKOH / g

[0094] The coating solution was coated on a 125 micron thick PET substrate. The above release layer slurry is coated by an ani...

Embodiment 2

[0097] Fluorine resin HLR-1 4.0kg

[0098] Acrylic 170E 3.0kg

[0099] Aldehyde Resin A81 2.0kg

[0100] Curing agent amino resin A03 2.0kg

[0101] Curing agent isocyanate 1358A 0.5kg

[0102] Auxiliary PTSA 0.2kg

[0103] Auxiliary antistatic agent SN 0.2kg

[0104] Auxiliary Dispersant DISPERBYK-110 0.2kg

[0105] Mixed solvent 1 Toluene: Butanone: Cyclohexanone=4:6:1 11.0kg

[0106] Mixed solvent 2 isopropanol: methyl ethyl ketone = 4:1 1.0kg

[0107] Silica (particle size 2-4μm) 1.0kg

[0108] Titanium dioxide (particle size 1.0-3.0μm) 1.5kg;

[0109] in:

[0110] Fluorine resin HLR-1 has a hydroxyl value of 50, an acid value of 1-5, and a number average molecular weight of 6000-25000

[0111] The hydroxyl value of acrylic resin 170E is 86mgKOH / g, and the acid value can be 9-15 mgKOH / g

[0112] On the PET substrate with a thickness of 50 μm, the above-mentioned release layer slurry is coated by three rolls, and fully dried and solidified to obtain a release pro...

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