阅读说明：本技术 12μmBOPET膜镭射烫印箔及其制备方法 (12 mu mBOPET film laser hot stamping foil and preparation method thereof ) 是由 林雪峰 陆游 李伟 陈旭峰 王靖靖 于 2020-02-21 设计创作，主要内容包括：本发明属镭射烫印技术领域,具体涉及一种12μmBOPET膜镭射烫印箔及其制备方法。12μmBOPET膜镭射烫印箔包括一层12μmBOPET薄膜基材,在基材一面依次涂覆有脱落层、显色层、镭射模压层、铝层、胶层。本发明通过降低镭射烫印箔所用薄膜基材的厚度,并对技术工艺、高分子涂层配方进行创新,不仅节约了BOPET膜使用成本,所制产品同时具备：烫印能耗低、烫印速度快、镭射效果好的特点。(The invention belongs to the technical field of laser hot stamping, and particularly relates to a 12 mu m BOPET film laser hot stamping foil and a preparation method thereof. The 12 mu m BOPET film laser hot stamping foil comprises a layer of 12 mu m BOPET film base material, and a release layer, a color development layer, a laser mould pressing layer, an aluminum layer and an adhesive layer are sequentially coated on one surface of the base material. According to the invention, by reducing the thickness of the film substrate used by the laser thermoprinting foil and innovating the technical process and the high-molecular coating formula, the use cost of the BOPET film is saved, and the prepared product simultaneously has the following advantages: low thermoprinting energy consumption, high thermoprinting speed and good laser effect.)

1.12 mu m BOPET film laser thermoprinting foil, its characterized in that: the film at least comprises a layer of 12 mu m BOPET film base material, and a shedding layer, a color development layer, a laser mould pressing layer, an aluminum layer and an adhesive layer are sequentially coated on one surface of the base material.

The preparation method of the 2.12 mu m BOPET film laser hot stamping foil is characterized by comprising the following steps:

a. a release layer: mixing 5-50 parts by weight of deionized water and 5-60 parts by weight of edible alcohol to form a diluent, sequentially adding 1-10 parts by weight of montan wax and 1-8 parts by weight of Tg65-70 ℃ modified acrylic resin under stirring, stirring at medium speed for 20 minutes, and filtering to prepare a coating of a falling layer; using a coating machine, controlling the dry coating amount to be 0.4-0.65g/m²Setting the drying temperature to be 85-165 ℃ and the vehicle speed to be 85-115m/min, and coating the stripping layer coating on the surface of a 12 mu m BOPET film base material to form a stripping layer;

b. a color development layer: mixing 10-100 parts by weight of butanone and 0-10 parts by weight of isopropanol to form a diluent, sequentially adding 0-10 parts by weight of inorganic dye and 5-15 parts by weight of thermosetting rosin modified polyurethane with the molecular weight of 5-8 ten thousand under stirring, and continuously stirring at medium speedStirring for 15 minutes, and filtering to prepare a color developing coating; using a coating machine, adopting 230-mesh and 250-mesh laser engraving anilox roller, and controlling the dry coating amount to be 0.7-0.9g/m²Setting the drying temperature to be 80-160 ℃, setting the vehicle speed to be 100-;

c. laser mould pressing layer: mixing 10-60 parts by weight of butanone, 2-20 parts by weight of n-propyl ester and 1-10 parts by weight of isopropanol to form a diluent, sequentially adding 1-10 parts by weight of thermoplastic polyurethane with a softening point of 130-; using a coating machine, adopting a 180-mesh 200-mesh laser engraving anilox roller, and controlling the dry coating amount to be 0.9-1.2g/m²Setting the drying temperature to be 90-175 ℃, setting the vehicle speed to be 90-110m/min, and coating the die pressing coating on the surface of the color development layer to form a die pressing coating; finally, using a seamless molding device, setting a plate: the temperature is 170 ℃ and 200 ℃ and the molding pressure is 5kg/m²-10kg/m²Setting two versions: the temperature is 160 ℃ and 190 ℃ and the mould pressing pressure is 5kg/m²-10kg/m²Different laser effects are extruded according to different nickel plate working plates to form laser mould pressing layers;

d. aluminum layer: using an aluminum plating machine and an ESK evaporation boat, controlling the thickness of the aluminum layer to be between 500-550 angstroms, and evaporating a high-purity aluminum wire with the purity of more than 99.9 percent and the diameter of 1.8mm on the surface of the laser mould pressing layer to form the aluminum layer;

e. glue layer: mixing 10-100 parts by weight of ethyl acetate and 5-50 parts by weight of isobutyl ester into a diluent, sequentially adding 1-10 parts by weight of EVA resin with a softening point of 75 ℃ and a Tg of 45-50 ℃, 1-8 parts by weight of aldehyde ketone resin with a softening point of 80 ℃ and a Tg of 60-65 ℃ and 0-5 parts by weight of short-oil alkyd resin under a stirring state, stirring at a high speed for 15 minutes, and filtering to prepare a sizing material; using a coating machine, adopting 160-mesh 180-mesh laser to carve the anilox roller, and controlling the dry coating amount to be 1.3-1.6g/m²Setting the drying temperature to be 75-155 ℃, setting the vehicle speed to be 90-110m/min, and coating the rubber material on the surface of the aluminum layer to form the rubber layer.

Technical Field

The invention relates to a 12 mu m BOPET film laser hot stamping foil and a preparation method thereof, belonging to the technical field of laser hot stamping.

Background

The hot stamping images and texts of the laser hot stamping foil have a special laser effect, the appearance grade of the hot stamping bearing base material is improved, and meanwhile, the anti-counterfeiting effect is achieved, and the laser hot stamping foil is gradually popular in various fields in recent years. However, due to the limitation of the prior art, the conventional laser hot stamping foil production link generally uses a film substrate with a thickness of 15 μm or more, which causes waste of production materials and simultaneously has a series of problems of high hot stamping energy consumption, low hot stamping speed and the like.

Disclosure of Invention

The invention aims to overcome the defects in the prior art, and provides a BOPET film which can save the use cost and is provided with: the 12 mu m BOPET film laser hot stamping foil has low hot stamping energy consumption, high hot stamping speed and good laser effect and the preparation method thereof.

The technical scheme adopted by the invention for solving the technical problems is as follows: 12 mu m BOPET film laser thermoprinting foil, its characterized in that: the film at least comprises a layer of 12 mu m BOPET film base material, and a shedding layer, a color development layer, a laser mould pressing layer, an aluminum layer and an adhesive layer are sequentially coated on one surface of the base material.

The preparation method comprises the following specific steps:

a. a release layer: mixing 5-50 parts by weight of deionized water and 5-60 parts by weight of edible alcohol to form a diluent, sequentially adding 1-10 parts by weight of montan wax and 1-8 parts by weight of Tg65-70 ℃ modified acrylic resin under stirring, stirring at medium speed for 20 minutes, and filtering to prepare a coating of a falling layer; using a coating machine, controlling the dry coating amount to be 0.4-0.65g/m²Setting the drying temperature to be 85-165 ℃ and the vehicle speed to be 85-115m/min, and coating the stripping layer coating on the surface of a 12 mu m BOPET film base material to form a stripping layer;

b. a color development layer: mixing 10-100 parts by weight of butanone and 0-10 parts by weight of isopropanol to form a diluent, sequentially adding 0-10 parts by weight of inorganic dye and 5-15 parts by weight of thermosetting rosin modified polyurethane with the molecular weight of 5-8 ten thousand under stirring, continuously stirring at medium speed for 15 minutes, and filtering to prepare the color developing coating; using a coating machine, adopting 230-mesh and 250-mesh laser engraving anilox roller, and controlling the dry coating amount to be 0.7-0.9g/m²Setting the drying temperature to be 80-160 ℃, setting the vehicle speed to be 100-;

c. laser mould pressing layer: mixing 10-60 parts by weight of butanone, 2-20 parts by weight of n-propyl ester and 1-10 parts by weight of isopropanol to form a diluent, sequentially adding 1-10 parts by weight of thermoplastic polyurethane with a softening point of 130-; using a coating machine, adopting a 180-mesh 200-mesh laser engraving anilox roller, and controlling the dry coating amount to be 0.9-1.2g/m²Setting the drying temperature to be 90-175 ℃, setting the vehicle speed to be 90-110m/min, and coating the die pressing coating on the surface of the color development layer to form a die pressing coating; finally, using a seamless molding device, setting a plate: the temperature is 170 ℃ and 200 ℃ and the molding pressure is 5kg/m²-10kg/m²Setting two versions: the temperature is 160 ℃ and 190 ℃ and the mould pressing pressure is 5kg/m²-10kg/m²Different laser effects are extruded according to different nickel plate working plates to form laser mould pressing layers;

d. aluminum layer: using an aluminum plating machine and an ESK evaporation boat, controlling the thickness of the aluminum layer to be between 500-550 angstroms, and evaporating a high-purity aluminum wire with the purity of more than 99.9 percent and the diameter of 1.8mm on the surface of the laser mould pressing layer to form the aluminum layer;

e. glue layer: mixing 10-100 parts by weight of ethyl acetate and 5-50 parts by weight of isobutyl ester into a diluent, sequentially adding 1-10 parts by weight of EVA resin with a softening point of 75 ℃ and a Tg of 45-50 ℃, 1-8 parts by weight of aldehyde ketone resin with a softening point of 80 ℃ and a Tg of 60-65 ℃ and 0-5 parts by weight of short-oil alkyd resin under a stirring state, stirring at a high speed for 15 minutes, and filtering to prepare a sizing material; using a coating machine, adopting 160-mesh 180-mesh laser to carve the anilox roller, and controlling the dry coating amount to be 1.3-1.6g/m²Setting the drying temperature to be 75-155 ℃, setting the vehicle speed to be 90-110m/min, and coating the rubber material on the surface of the aluminum layer to form the rubber layer.

Compared with the prior art, the invention not only saves the use cost of the BOPET film, but also has the following functions: low thermoprinting energy consumption, high thermoprinting speed and good laser effect.

Detailed Description

The present invention will be described in detail with reference to specific embodiments below: the invention relates to a 12 mu m BOPET film laser hot stamping foil, which is characterized in that: the film at least comprises a layer of 12 mu m BOPET film base material, and a shedding layer, a color development layer, a laser mould pressing layer, an aluminum layer and an adhesive layer are sequentially coated on one surface of the base material.

Example 1

The preparation method of the 12 mu m BOPET film laser hot stamping foil comprises the following specific steps:

a. a release layer: mixing 45 parts by weight of deionized water and 50 parts by weight of edible alcohol to form a diluent, sequentially adding 9 parts by weight of montan wax and 5 parts by weight of Tg65-70 ℃ modified acrylic resin under a stirring state, stirring at a medium speed for 20 minutes, and filtering to prepare a stripping layer coating; using a coating machine, controlling the dry coating amount to be 0.6-0.65g/m²Setting drying temperatures (five zones) of 80, 125, 160, 150 and 130 ℃, setting the vehicle speed of 115m/min, and coating the stripping layer coating on the surface of a 12 mu m BOPET film base material to form a stripping layer;

b. a color development layer: mixing 90 weight parts of butanone and 3 weight parts of isopropanol to form a diluent, and sequentially adding the diluent and the isopropanol under stirringAdding 10 parts by weight of inorganic dye and 15 parts by weight of thermosetting rosin modified polyurethane with the molecular weight of 5-8 ten thousand, continuously stirring for 15 minutes at medium speed, and filtering to prepare a color developing coating; using a coating machine, carving an anilox roller by using 250-mesh laser, and controlling the dry coating amount to be 0.85-0.9g/m²Setting drying temperatures (five zones) of 80, 130, 160, 155 and 130 ℃, setting a vehicle speed of 130m/min, and coating the color developing coating on the surface of the stripping layer to form a color developing layer;

c. laser mould pressing layer: mixing 50 parts by weight of butanone, 5 parts by weight of n-propyl ester and 5 parts by weight of isopropanol to form a diluent, sequentially adding 8 parts by weight of thermoplastic polyurethane with a softening point of 130-135 ℃, 8 parts by weight of thermosetting rosin modified acrylic resin with a molecular weight of 2-3 ten thousand and 1 part by weight of modified vinyl resin with a molecular weight of 5-6 ten thousand under a stirring state, stirring at a high speed for 15 minutes, and filtering to prepare a mould pressing coating; using a coating machine, carving an anilox roller by 180-mesh laser, and controlling the dry coating amount to be 1.1-1.2g/m²Setting drying temperatures (five zones) of 85, 135, 175, 165 and 135 ℃, setting a vehicle speed of 100m/min, and coating the die pressing coating on the surface of the color development layer to form a die pressing coating; finally, using a seamless molding device, setting a plate: the temperature is 195 ℃ and the molding pressure is 5kg/m²Setting two versions: the temperature is 190 ℃ and the die pressing pressure is 6kg/m²Different laser effects are extruded according to different nickel plate working plates to form laser mould pressing layers;

d. aluminum layer: using an aluminum plating machine and an ESK evaporation boat, controlling the thickness of the aluminum layer to be between 500-550 angstroms, and evaporating a high-purity aluminum wire with the purity of more than 99.9 percent and the diameter of 1.8mm on the surface of the laser mould pressing layer to form the aluminum layer;

e. glue layer: mixing 50 parts by weight of ethyl acetate and 50 parts by weight of isobutyl ester into a diluent, sequentially adding 10 parts by weight of EVA resin with a softening point of 75 ℃ and a Tg of 45-50 ℃, 3 parts by weight of aldehyde ketone resin with a softening point of 80 ℃ and a Tg of 60-65 ℃ and 1 part by weight of short-oil alkyd resin under a stirring state, stirring at a high speed for 15 minutes, and filtering to prepare a sizing material; using a coating machine, carving an anilox roller by 180-mesh laser, and controlling the dry coating amount to be 1.3-1.35g/m²Setting drying temperatures (five zones) of 80, 125, 155, 150 and 130 ℃, setting the vehicle speed of 110m/min, and coating the rubber material on the surface of the aluminum layerAnd (6) forming a glue layer.

Example 2

The preparation method of the 12 mu m BOPET film laser hot stamping foil comprises the following specific steps:

a. a release layer: mixing 25 parts by weight of deionized water and 25 parts by weight of edible alcohol to form a diluent, sequentially adding 3 parts by weight of montan wax and 3 parts by weight of Tg65-70 ℃ modified acrylic resin under a stirring state, stirring at a medium speed for 20 minutes, and filtering to prepare a stripping layer coating; using a coating machine, and controlling the dry coating amount to be 0.45-0.5g/m²Setting drying temperatures (five zones) of 85, 125, 165, 160 and 135 ℃, setting a vehicle speed of 90m/min, and coating the stripping layer paint on the surface of a 12 mu m BOPET film base material to form a stripping layer;

b. a color development layer: mixing 50 parts by weight of butanone and 10 parts by weight of isopropanol to form a diluent, sequentially adding 3 parts by weight of inorganic dye and 6 parts by weight of thermosetting rosin modified polyurethane with the molecular weight of 5-8 ten thousand under the stirring state, continuously stirring at medium speed for 15 minutes, and filtering to prepare the color developing coating; using a coating machine, carving an anilox roller by using 230-mesh laser, and controlling the dry coating amount to be 0.75-0.8g/m²Setting drying temperatures (five zones) of 80, 130, 155, 150 and 130 ℃, setting a vehicle speed of 110m/min, and coating the color developing coating on the surface of the stripping layer to form a color developing layer;

c. laser mould pressing layer: mixing 30 parts by weight of butanone, 10 parts by weight of n-propyl ester and 6 parts by weight of isopropanol to form a diluent, sequentially adding 10 parts by weight of thermoplastic polyurethane with a softening point of 130-135 ℃, 3 parts by weight of thermosetting rosin modified acrylic resin with a molecular weight of 2-3 ten thousand and 5 parts by weight of modified vinyl resin with a molecular weight of 5-6 ten thousand under a stirring state, stirring at a high speed for 15 minutes, and filtering to prepare a mould pressing coating; using a coating machine, carving an anilox roller by using 200-mesh laser, and controlling the dry coating amount to be 0.9-1.0g/m²Setting drying temperatures (five zones) of 80, 125, 165, 155 and 130 ℃, setting a vehicle speed of 110m/min, and coating the die pressing coating on the surface of the color development layer to form a die pressing coating; finally, using a seamless molding device, setting a plate: the temperature is 175 ℃ and the molding pressure is 8kg/m²Setting two versions: the temperature is 170 ℃ and the molding pressure is 8kg/m²Working from different nickel platesPressing different laser effects to form a laser mould pressing layer;

d. aluminum layer: using an aluminum plating machine and an ESK evaporation boat, controlling the thickness of the aluminum layer to be between 500-550 angstroms, and evaporating a high-purity aluminum wire with the purity of more than 99.9 percent and the diameter of 1.8mm on the surface of the laser mould pressing layer to form the aluminum layer;

e. glue layer: mixing 80 parts by weight of ethyl acetate and 15 parts by weight of isobutyl ester into a diluent, sequentially adding 5 parts by weight of EVA resin with a softening point of 75 ℃ and a Tg of 45-50 ℃, 6 parts by weight of aldehyde ketone resin with a softening point of 80 ℃ and a Tg of 60-65 ℃ and 3 parts by weight of short-oil alkyd resin under a stirring state, stirring at a high speed for 15 minutes, and filtering to prepare a sizing material; using a coating machine, carving an anilox roller by using 160-mesh laser, and controlling the dry coating amount to be 1.5-1.55g/m²Setting drying temperatures (five zones) of 75, 125, 150 and 125 ℃, setting the vehicle speed of 100m/min, and coating the glue material on the surface of the aluminum layer to form a glue layer.