Polyester ink for ultra-thin colored film and method for making ultra-thin colored film

Abstract

The invention discloses a polyester ink for an ultrathin colored film, which is prepared from the following raw materials in parts by mass: polyester resin, pigment, matting powder, dispersing agent, diluter and curing agent. The invention also discloses a manufacturing method of the ultrathin colored film, which comprises the following steps: 1) coating a release agent on a PET (polyethylene terephthalate) substrate, drying and curing to obtain a release layer; 2) coating the polyester ink on the release layer, drying and curing; and peeling the base film. Otherwise, the manufacturing method of the ultrathin colored film comprises the following steps: 1) coating a release agent on a PET substrate, drying and curing to obtain a release layer; 2) coating protective gloss oil on the release layer to form an ink protective layer; 3) coating the polyester ink on the ink protective layer, drying and curing to form an ink layer; and peeling the base film. The manufacturing method can be used for flexibly producing the film of any thickness or color, and can be used for preparing the polyester films with different tensile strengths and percentages of elongation; and the added ink protective layer can promote the diversification of the product functions.

Description

technical field

[0001] The invention relates to a polyester ink used for an ultra-thin colored film and a method for making the ultra-thin colored film. Background technique

[0002] Colored films are usually produced by casting or biaxial stretching, but the thickness of the film produced by this method can be close to 2 μm in the transparent field. Mitsubishi, Toray and DuPont of the United States can produce transparent films below 2 μm and above 1 μm. PET film, but in colored PET film, such as black, white, red and other colored PET films, it is limited by the amount of masterbatch added. After the amount of masterbatch added exceeds a certain proportion, its film properties, such as tensile properties , Heat resistance and production feasibility will be greatly reduced. At the same time, the total demand for colored PET is also difficult to meet the large-scale production of biaxial stretching equipment. There is no colored PET below 12 μm for sale in the market. [00...

Examples

Embodiment 1

[0043] A method for preparing an ultra-thin film, the manufacturing process is as follows:

[0044] 1) Coating release layer on PET substrate

[0045] The release agent is evenly coated on the PET substrate with the coating method of Micro Gravure, the coating thickness is 0.1 μm, and it is rewound after being dried in an oven. ℃, 60℃, speed 40m / min, oven length 18m, the release agent is fully cross-linked and solidified under the action of temperature.

[0046] The formulation of the release agent consists of: 2 parts by mass of Silcolease 7410, 0.8 parts by mass of Silcolease 91A, 0.02 parts by mass of Dow Corning DC4000, and 97.18 parts by mass of 93# gasoline.

[0047] 2) Coating the ink protective layer on the release layer

[0048] On the release layer, use Micro Gravure coating method to coat heat-curing varnish. The coating thickness of varnish is 2 μm. The coating speed and curing conditions of varnish, the oven temperature is 60°C, 80°C, 110°C, 100°C, 100°C, 60°C,...

Embodiment 2

[0054] A kind of preparation method of ultra-thin film preparation, its preparation process is as follows:

[0055] 1) Coating release layer on PET substrate

[0056] The release agent is uniformly coated on the PET substrate with the coating method of Micro Gravure, the coating thickness is 0.2 μm, and it is rewound after being dried in an oven. The oven temperature is 60 ° C, 80 ° C, 110 ° C, 140 ° C, ℃, 60℃, speed 40m / min, oven length 18m, the release agent is fully cross-linked and solidified under the action of temperature;

[0057] The formulation of the release agent is composed of: 1.2 parts by mass of Silcolease 7410, 0.55 parts by mass of Silcolease 91A, 0.05 parts by mass of Dow Corning DC4000, and 98.2 parts by mass of 93# gasoline.

[0058] 2) Coating the ink protective layer on the release layer

[0059] Apply UV varnish on the release layer with the coating method of Micro Gravure. The coating thickness of the varnish is 2 μm, and UV curing is sufficient;

[...

Embodiment 3

[0064] A kind of preparation method of ultra-thin film preparation, its preparation process is as follows:

[0065] 1) Coating release layer on PET substrate

[0066] The release agent is uniformly coated on the PET substrate with the coating method of Micro Gravure, the coating thickness is 0.2 μm, and it is rewound after being dried in an oven. The oven temperature is 60 ° C, 80 ° C, 110 ° C, 140 ° C, ℃, 60℃, speed 40m / min, oven length 18m, the release agent is fully cross-linked and solidified under the action of temperature;

[0067] The formulation of the release agent consists of: 2 parts by mass of Yifangsha's silicon-free release agent PEELOIL 1010, and 98 parts by mass of ethyl acetate.

[0068] 2) Coating the ink protective layer on the release layer

[0069] On the release layer, heat-curing varnish is coated with Micro Gravure coating method. The coating thickness of varnish is 2μm, the viscosity of varnish is 100~500cps, the coating speed and curing conditions o...

technical field

[0001] The invention relates to a polyester ink used for an ultra-thin colored film and a method for making the ultra-thin colored film. Background technique

[0002] Colored films are usually produced by casting or biaxial stretching, but the thickness of the film produced by this method can be close to 2 μm in the transparent field. Mitsubishi, Toray and DuPont of the United States can produce transparent films below 2 μm and above 1 μm. PET film, but in colored PET film, such as black, white, red and other colored PET films, it is limited by the amount of masterbatch added. After the amount of masterbatch added exceeds a certain proportion, its film properties, such as tensile properties , Heat resistance and production feasibility will be greatly reduced. At the same time, the total demand for colored PET is also difficult to meet the large-scale production of biaxial stretching equipment. There is no colored PET below 12 μm for sale in the market. [00...

Examples

Embodiment 1

[0043] A method for preparing an ultra-thin film, the manufacturing process is as follows:

[0044] 1) Coating release layer on PET substrate

[0045] The release agent is evenly coated on the PET substrate with the coating method of Micro Gravure, the coating thickness is 0.1 μm, and it is rewound after being dried in an oven. ℃, 60℃, speed 40m / min, oven length 18m, the release agent is fully cross-linked and solidified under the action of temperature.

[0046] The formulation of the release agent consists of: 2 parts by mass of Silcolease 7410, 0.8 parts by mass of Silcolease 91A, 0.02 parts by mass of Dow Corning DC4000, and 97.18 parts by mass of 93# gasoline.

[0047] 2) Coating the ink protective layer on the release layer

[0048] On the release layer, use Micro Gravure coating method to coat heat-curing varnish. The coating thickness of varnish is 2 μm. The coating speed and curing conditions of varnish, the oven temperature is 60°C, 80°C, 110°C, 100°C, 100°C, 60°C,...

Embodiment 2

[0054] A kind of preparation method of ultra-thin film preparation, its preparation process is as follows:

[0055] 1) Coating release layer on PET substrate

[0056] The release agent is uniformly coated on the PET substrate with the coating method of Micro Gravure, the coating thickness is 0.2 μm, and it is rewound after being dried in an oven. The oven temperature is 60 ° C, 80 ° C, 110 ° C, 140 ° C, ℃, 60℃, speed 40m / min, oven length 18m, the release agent is fully cross-linked and solidified under the action of temperature;

[0057] The formulation of the release agent is composed of: 1.2 parts by mass of Silcolease 7410, 0.55 parts by mass of Silcolease 91A, 0.05 parts by mass of Dow Corning DC4000, and 98.2 parts by mass of 93# gasoline.

[0058] 2) Coating the ink protective layer on the release layer

[0059] Apply UV varnish on the release layer with the coating method of Micro Gravure. The coating thickness of the varnish is 2 μm, and UV curing is sufficient;

[...

Embodiment 3

[0064] A kind of preparation method of ultra-thin film preparation, its preparation process is as follows:

[0065] 1) Coating release layer on PET substrate

[0066] The release agent is uniformly coated on the PET substrate with the coating method of Micro Gravure, the coating thickness is 0.2 μm, and it is rewound after being dried in an oven. The oven temperature is 60 ° C, 80 ° C, 110 ° C, 140 ° C, ℃, 60℃, speed 40m / min, oven length 18m, the release agent is fully cross-linked and solidified under the action of temperature;

[0067] The formulation of the release agent consists of: 2 parts by mass of Yifangsha's silicon-free release agent PEELOIL 1010, and 98 parts by mass of ethyl acetate.

[0068] 2) Coating the ink protective layer on the release layer

[0069] On the release layer, heat-curing varnish is coated with Micro Gravure coating method. The coating thickness of varnish is 2μm, the viscosity of varnish is 100~500cps, the coating speed and curing conditions o...