Inkjet film with flash point

Abstract

The utility model provides a jet drawing film with a flash point. The jet drawing film with the flash point comprises a protective film layer, a coating, a first base material layer, a first mounting adhesive layer, a jet drawing layer, a second base material layer, a second mounting adhesive layer and a release film layer which are sequentially stacked, a protective film layer is arranged at the top of the coating, a first base material layer is arranged at the bottom of the coating, a first mounting adhesive layer is arranged at the bottom of the first base material layer, a spray painting layer is arranged at the bottom of the first mounting adhesive layer, a second base material layer is arranged at the bottom of the spray painting layer, and a second mounting adhesive layer is arranged at the bottom of the second base material layer. A release film layer is arranged at the bottom of the second mounting adhesive layer; the utility model provides a jet drawing film with flash points, which is used for color change or graffiti on the surface of an automobile body, so that the changed color or pattern on the surface of the automobile has a flash effect, and the jet drawing film has good corrosion-resistant and anti-aging effects.

Description

Technical Field

[0001] The utility model relates to the technical field of spray-painted films, in particular to a spray-painted film with flash points used on the surface of an automobile body. Background Art

[0002] As people's pursuit of personalized cars grows, they're becoming increasingly interested in recoloring and adding graffiti to their vehicles. Automotive spray-painted films are now a popular choice. However, conventional spray-painted films offer a single color and poor corrosion and aging resistance. Not only do they fail to meet personalized demands, they can also easily cause corrosion on the painted pattern. Therefore, we propose a spray-painted film with a flash point to address these issues. Utility Model Content

[0003] In view of the above-mentioned shortcomings of the prior art, the utility model provides a spray-painted film with flash points. The surface of the spray-painted film with flash points is covered with a TPU protective layer that resists corrosion and aging, and flash powder is used to achieve a flash effect on the color layer.

[0004] The utility model provides a spray-painted film with a flash point, which comprises a protective film layer, a coating layer, a first substrate layer, a first mounting adhesive layer, a spray-painted layer, a second substrate layer, a second mounting adhesive layer, and a release film layer stacked in sequence; that is, the protective film layer is provided on the top of the coating layer, the first substrate layer is provided on the bottom of the coating layer, the first mounting adhesive layer is provided on the bottom of the first substrate layer, the spray-painted layer is provided on the bottom of the first mounting adhesive layer, the second substrate layer is provided on the bottom of the spray-painted layer, the second substrate layer is provided on the bottom of the second mounting adhesive layer, and the release film layer is provided on the bottom of the second mounting adhesive layer.

[0005] The protective film layer has a thickness of 2 to 188 μm; preferably 20 to 125 μm, and more preferably 16 to 75 μm; the material of the protective film layer is one of PET, PE, and OPP (transparent, translucent, or colored polyester film), and the protective film layer protects the coating underneath.

[0006] The coating has a thickness of 2 to 30 μm, preferably 2 to 20 μm, and more preferably 5 to 10 μm; the material of the coating is ethylene vinyl acetate; the coating contains a UV agent, which gives it the functions of UV protection and aging resistance, and the coating as a whole has the effects of self-repairing scratches, anti-scratch, anti-corrosion, and anti-fouling.

[0007] The first substrate layer has a thickness of 20 to 500 μm, preferably 75 to 300 μm, and more preferably 100 to 150 μm. The material of the first substrate layer is TPU (thermoplastic polyurethane elastomer), PVC (polyvinyl chloride), TPH (thermoplastic plastic elastomer), PET, or PP. TPU material is a thermoplastic elastomer, a polymer material formed by the reaction and polymerization of diphenylmethane diisocyanate (MDI) or toluene diisocyanate (TDI) and macromolecular polyols and low-molecular polyols (chain extenders). TPU material has a wide hardness range, is wear-resistant and oil-resistant, transparent, and has good elasticity. It is widely used in daily necessities, sporting goods, toys, decorative materials, and other fields. The main components of TPU material include polyetheretherketone, polyester, and isocyanate. PVC material is formed by the polymerization of vinyl chloride monomer and is one of the commonly used thermoplastic plastics; its trade name is abbreviated as "chlorine plastic." TPH material is a thermoplastic elastomer, a high-strength, high-water-resistant, and highly wear-resistant elastic material; it can withstand extreme temperatures, pressures, and chemical corrosion while maintaining excellent physical properties. PET film, also known as high-temperature resistant polyester film, has excellent physical and chemical properties, dimensional stability, transparency, and recyclability; it has excellent mechanical properties, and its toughness is the best among all thermoplastics. Its tensile strength and impact strength are much higher than those of ordinary films, and it has good strength and dimensional stability. It also has excellent heat resistance, cold resistance, and good chemical and oil resistance. PP film is divided into unstretched polypropylene film and biaxially oriented polypropylene film. Unstretched polypropylene film includes blown polypropylene film (IPP) produced by extrusion blow molding and extrusion cast polypropylene (CPP) produced by T-mold method; biaxially oriented polypropylene film (BOPP) is a new type of film developed for the purpose of replacing cellophane. It has the characteristics of high mechanical strength, good toughness, good transparency and glossiness. Preferably, the material of the substrate layer is thermoplastic elastomer TPU or TPH, and more preferably, the material of the substrate layer is TPU.

[0008] The first installation adhesive layer (also called pressure-sensitive adhesive layer) has a thickness of 5 to 100 μm, preferably 25 to 75 μm; further preferably 30 to 35 μm; pressure-sensitive adhesives can be divided into two types according to the main resin component: rubber type and resin type. Rubber type can be divided into natural rubber and synthetic rubber; resin type mainly includes acrylic, silicone and polyurethane. In addition to the main component of rubber, rubber-type pressure-sensitive adhesives also need to add other auxiliary ingredients, such as tackifying resins, plasticizers, fillers, viscosity modifiers, vulcanizers, antioxidants, solvents, etc. In addition to the main resin, resin-type pressure-sensitive adhesives also need to add defoaming agents, leveling agents, wetting agents and other additives. Glitter powder with good glitter effect is added to the first installation adhesive layer, so that the first installation adhesive layer has a glitter effect.

[0009] The thickness of the spray painting layer is 0.1-20 μm, preferably 0.5-1.7 μm, and more preferably 1-1.2 μm. The spray painting layer is sprayed by a spray printer using inkjet printing ink to form a color layer or a pattern layer.

[0010] The second substrate layer has a thickness of 2 to 188 μm, preferably 25 to 100 μm, and more preferably 50 to 75 μm. The material of the second substrate layer is TPU, TPH, PET or PVC, and its material properties are the same as those of the first substrate layer; preferably, the material of the second substrate layer is PVC.

[0011] The second mounting adhesive layer (also called pressure-sensitive adhesive layer) has a thickness of 20 to 100 μm, preferably 25 to 70 μm, and more preferably 30 to 50 μm. The material of the second mounting adhesive layer is an acrylic pressure-sensitive adhesive layer, and its material properties are the same as those of the first mounting adhesive layer.

[0012] The release film layer has a thickness of 12 to 188 μm, preferably 50 to 170 μm, and more preferably 130 to 150 μm. The material of the release film layer is one of PET, PE, and OPP (transparent, translucent, or colored polyester film). The release film is a silicone release agent coated on the surface of the environmentally friendly PET, PE, or OPP film, allowing it to exhibit extremely light and stable release force for various organic pressure-sensitive adhesives. Different organic pressure-sensitive adhesives, such as hot melt adhesives, acrylic adhesives, and rubber system pressure-sensitive adhesives, require different release film release forces. The release force is adjusted accordingly to the viscosity of the adhesive of the product to be isolated, so that an extremely light and stable release force is achieved during peeling. The material of the release film layer is preferably PET embossed release film. The embossing on the PET embossed release film is a uniform grid pattern. The embossing on the PET embossed release film can form a grid pattern on the surface of the second mounting adhesive layer. This grid pattern has an exhaust function, so that the inkjet film can have a good dry-sticking function.

[0013] The method for preparing the above-mentioned inkjet film with a flash point comprises the following steps:

[0014] (1) First, a transparent TPU film is prepared as the first substrate layer by a casting production method;

[0015] (2) coating a pressure-sensitive acrylic adhesive layer of mixed glitter powder on one side of the first substrate layer by a roll-to-roll coating and laminating line to form a first mounting adhesive layer, stretching the layer under a tension of 250 to 300 N without deformation, and then coating a pressure-sensitive acrylic adhesive layer of mixed glitter powder on the surface of the first substrate layer, coating the layer by roller coating and drying the layer in an oven, wherein the length of each of the seven oven sections is 4 meters, and the total length of the oven is 28 meters. The temperatures of the seven oven sections are set as follows: 70°C for the first section, 80°C for the second section, 90°C for the third section, 105°C for the fourth section, 115°C for the fifth section, 125°C for the sixth section, and 90°C for the seventh section, and the baking time is 13 meters per minute;

[0016] (3) After drying out of the oven, a release film layer is coated on one side of the first installation adhesive layer by a mirror roll lamination method to produce a TPU semi-finished film with a flash point; the material of the release film layer is PET release film;

[0017] (4) applying a coating on the other side of the first substrate layer by means of a screw, applying the coating by means of a roller coating and drying the coating in an oven, wherein the length of each of the seven oven sections is 4 meters, and the total length of the oven is 28 meters. The temperatures of the seven oven sections are set as follows: 60°C for the first section, 70°C for the second section, 80°C for the third section, 90°C for the fourth section, 110°C for the fifth section, 120°C for the sixth section, and 90°C for the seventh section, respectively. The baking time is 7 meters per minute, and the coating is formed after being dried out of the oven;

[0018] (5) After drying out of the oven, a protective film layer is applied on one side of the coating by mirror rolling. The material of the protective film layer is PET, PE or OPP film;

[0019] (6) A white PVC film is then produced by a casting method as the second substrate layer;

[0020] (7) coating an acrylic pressure-sensitive adhesive layer on one side of the second substrate layer by a roll-to-roll coating laminating line to form a second mounting adhesive layer, stretching the layer under a tension of 250 to 300 N without deformation, and then coating the surface of the second substrate layer with an acrylic pressure-sensitive adhesive layer by roller coating and drying the layer in an oven. The length of each of the seven oven sections is 4 meters, and the total length of the oven is 28 meters. The temperatures of the seven oven sections are set as follows: 70°C for the first section, 80°C for the second section, 90°C for the third section, 105°C for the fourth section, 115°C for the fifth section, 125°C for the sixth section, and 90°C for the seventh section. The baking time is 13 meters per minute.

[0021] (8) After drying out of the oven, a release film layer is laminated by mirror rolling, wherein the release film layer material is a PET embossed release film, and after lamination, the second mounting adhesive layer has an embossed pattern;

[0022] (9) Using an inkjet printer, a pattern or a single color is sprayed on the other side of the second substrate layer, and then dried in a dryer to form a spray-painted layer; thus, a semi-finished spray-painted film is produced;

[0023] (10) peeling off the release film on the first installation adhesive layer below the TPU semi-finished film with flash point by a coating machine;

[0024] (11) The TPU semi-finished film with flash points and the semi-finished spray-painted film are laminated by a mirror roller heating lamination method, and the first mounting adhesive layer of the TPU semi-finished film with flash points is laminated on the spray-painted layer of the semi-finished spray-painted film to prepare the spray-painted film with flash points.

[0025] The beneficial effects of the utility model are as follows: the utility model provides a spray-painted film with flash points, which is used for changing the color or graffiti on the surface of a car body, so that the color or pattern on the car surface has a flashing effect, and has good anti-corrosion and anti-aging effects. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a schematic cross-sectional view of the inkjet film with flash points in an embodiment of the present invention.

[0027] Description of main component symbols:

[0028] Protective film layer 1 coating 2 First substrate layer 3 First installation glue layer 4 Spray painting layer 5 Second substrate layer 6 Second installation glue layer 7 Release film layer 8 DETAILED DESCRIPTION

[0029] In order to more clearly understand the technical features, purposes and effects of the present invention, the specific implementation methods of the present invention are now described with reference to the accompanying drawings.

[0030] The following is a detailed description of the steps for preparing a flash point spray film according to the present invention:

[0031] (1) First, a transparent TPU film is produced by a casting production method as the first substrate layer 3;

[0032] (2) A pressure-sensitive acrylic adhesive layer of mixed glitter powder is coated on one side of the first substrate layer 3 by a roll-to-roll coating and bonding line to form a first mounting adhesive layer 4. During the process, it is stretched under a tension of 250 to 300 N without deformation. Then, a pressure-sensitive acrylic adhesive layer of mixed glitter powder is coated on the surface of the first substrate layer 3. The coating is applied by roller coating and dried in an oven. The length of each of the seven oven sections is 4 meters, and the total length of the oven is 28 meters. The temperatures of the seven oven sections are set as follows: 70°C for the first section, 70°C for the second section, and 70°C for the third section. The first section is 80℃, the third section is 90℃, the fourth section is 105℃, the fifth section is 115℃, the sixth section is 125℃, and the seventh section is 90℃, and the baking time is 13 meters / minute; wherein, the amount of glitter powder added is 0.1%-3% of the mass of the acrylic pressure-sensitive adhesive, and the preferred amount is 0.5%-1.3%; adding too much glitter powder will cause the glue to be non-sticky, and too little will not achieve the desired effect. The amount of glitter powder used in the present invention can achieve a better glitter effect while retaining good adhesion of the adhesive layer, and the effect is better. Before mixing the glitter powder into the acrylic pressure-sensitive adhesive, it is necessary to use a filter to filter and screen it. The screening range of the filter element of the filter is 20um-1000um, and the preferred screening range is; using a filter element within this specification can filter out impurities while retaining good quality glitter powder, ensuring the quality of the glitter powder, ensuring the adhesion of the adhesive layer, and improving the glitter effect of the adhesive layer. The thickness of the gasket used during coating is 50um-750um, and the preferred gasket thickness is 250um-500um. When the gasket thickness within this specification is selected, there will be no knife edge line during the coating process, and it is not easy to leak the coating. The adhesive layer is evenly coated and the coating effect is good.

[0033] (3) After drying out of the oven, a release film layer is coated on one side of the first mounting adhesive layer 4 by mirror rolling lamination to produce a TPU semi-finished film with a flash point; the material of the release film layer is a PET release film (the release film will be peeled off in the subsequent process);

[0034] (4) Coating 2 is applied on the other side of the first substrate layer 3 by means of a screw, and then coated by roller coating and dried in an oven. The length of each of the seven oven sections is 4 meters, and the total length of the oven is 28 meters. The temperatures of the seven oven sections are set as follows: 60°C for the first section, 70°C for the second section, 80°C for the third section, 90°C for the fourth section, 110°C for the fifth section, 120°C for the sixth section, and 90°C for the seventh section. The baking time is 7 meters per minute, and the coating 2 is formed after being dried out of the oven. The material of the coating 2 is ethylene vinyl acetate mixed with a UV agent, wherein the amount of the UV agent added is 1% to 10% of the mass or weight of the ethylene vinyl acetate, and preferably 2% to 5%;

[0035] (5) After drying out of the oven, a protective film layer 1 is applied to one side of the coating 2 by mirror rolling. The material of the protective film layer 1 is PET, PE or OPP film;

[0036] (6) A white PVC film is then produced by a casting method as the second substrate layer 6;

[0037] (7) An acrylic pressure-sensitive adhesive layer is coated on one side of the second substrate layer 6 by a roll-to-roll coating laminating line to form a second mounting adhesive layer 7. During the process, the second substrate layer 6 is stretched without deformation under a tension of 250 to 300 N. Then, an acrylic pressure-sensitive adhesive layer is coated on the surface of the second substrate layer 6. The coating is performed by roller coating and then dried in an oven. The length of each of the seven oven sections is 4 meters, and the total length of the oven is 28 meters. The temperatures of the seven oven sections are set as follows: 70°C for the first section, 80°C for the second section, 90°C for the third section, 105°C for the fourth section, 115°C for the fifth section, 125°C for the sixth section, and 90°C for the seventh section. The baking time is 13 meters per minute.

[0038] (8) After drying out of the oven, the release film layer 8 is laminated by mirror rolling. The release film layer 8 is made of PET embossed release film. After lamination, the second mounting adhesive layer 7 has embossing.

[0039] (9) Using an inkjet printer, a pattern or a single color is sprayed on the other side of the second substrate layer 6, and then dried in a dryer to form a spray-painted layer 5; thus, a semi-finished spray-painted film is produced;

[0040] (10) Peeling off the release film on the first mounting adhesive layer 4 below the TPU semi-finished film with flash point by a coating machine;

[0041] (11) The TPU semi-finished film with flash points and the semi-finished spray-painted film are laminated by mirror roller heating bonding, and the first mounting adhesive layer 4 of the TPU semi-finished film with flash points is laminated on the spray-painted layer 5 of the semi-finished spray-painted film to make the spray-painted film with flash points.

[0042] According to the above-mentioned steps for preparing the spray-painted film with a flash point, the present invention adjusts the coating speed of the film layer and the parameters of the spraying or scraping machine to prepare finished products with different film thicknesses, including the following examples.

[0043] Example 1

[0044] The spray-painted film with flash points in this embodiment includes the following layers stacked in sequence:

[0045] (1) Protective film layer, made of PET with a thickness of 38 μm;

[0046] (2) coating, the material of which is ethylene vinyl acetate mixed with UV agent, with a thickness of 6 μm;

[0047] (3) a first substrate layer, made of TPU and having a thickness of 100 μm;

[0048] (4) a first mounting adhesive layer, the material of which is an acrylic pressure-sensitive adhesive mixed with glitter powder, and the thickness of which is 30 μm;

[0049] (5) a printing layer made of inkjet printing ink with a thickness of 0.5 μm;

[0050] (6) a second substrate layer, made of PVC and having a thickness of 55 μm;

[0051] (7) The second mounting adhesive layer is made of acrylic pressure-sensitive adhesive and has a thickness of 35 μm.

[0052] (8) Release film layer, made of PET, with a thickness of 140 μm.

[0053] Example 2

[0054] The spray-painted film with flash points in this embodiment includes the following layers stacked in sequence:

[0055] (1) Protective film layer, made of PET with a thickness of 40 μm;

[0056] (2) coating, the material of which is ethylene vinyl acetate mixed with UV agent, with a thickness of 10 μm;

[0057] (3) a first substrate layer, made of TPU and having a thickness of 150 μm;

[0058] (4) a first mounting adhesive layer, the material of which is an acrylic pressure-sensitive adhesive mixed with glitter powder, and the thickness of which is 40 μm;

[0059] (5) a printing layer made of inkjet printing ink with a thickness of 0.7 μm;

[0060] (6) a second substrate layer, made of PVC and having a thickness of 60 μm;

[0061] (7) The second mounting adhesive layer is made of acrylic pressure-sensitive adhesive and has a thickness of 50 μm.

[0062] (8) Release film layer, made of PET with a thickness of 150 μm.

[0063] Example 3

[0064] The spray-painted film with flash points in this embodiment includes the following layers stacked in sequence:

[0065] (1) Protective film layer, made of PET with a thickness of 75 μm;

[0066] (2) coating, the material of which is ethylene vinyl acetate mixed with UV agent, with a thickness of 13 μm;

[0067] (3) a first substrate layer, made of TPU and having a thickness of 175 μm;

[0068] (4) a first mounting adhesive layer, the material of which is an acrylic pressure-sensitive adhesive mixed with glitter powder, and the thickness of which is 55 μm;

[0069] (5) a printing layer made of inkjet printing ink with a thickness of 0.9 μm;

[0070] (6) a second substrate layer, made of PVC and having a thickness of 55 μm;

[0071] (7) The second mounting adhesive layer is made of acrylic pressure-sensitive adhesive and has a thickness of 52 μm.

[0072] (8) Release film layer, made of PET, with a thickness of 173 μm.

[0073] Example 4

[0074] The spray-painted film with flash points in this embodiment includes the following layers stacked in sequence:

[0075] (1) Protective film layer, made of PET with a thickness of 160 μm;

[0076] (2) coating, the material of which is ethylene vinyl acetate mixed with UV agent, with a thickness of 15 μm;

[0077] (3) a first substrate layer, made of TPU and having a thickness of 200 μm;

[0078] (4) a first mounting adhesive layer, the material of which is an acrylic pressure-sensitive adhesive mixed with glitter powder, and the thickness of which is 65 μm;

[0079] (5) a printing layer made of inkjet printing ink with a thickness of 1.5 μm;

[0080] (6) a second substrate layer, made of PVC and having a thickness of 76 μm;

[0081] (7) The second mounting adhesive layer is made of acrylic pressure-sensitive adhesive and has a thickness of 68 μm.

[0082] (8) Release film layer, made of PET, with a thickness of 178 μm.

[0083] Example 5

[0084] The spray-painted film with flash points in this embodiment includes the following layers stacked in sequence:

[0085] (1) Protective film layer, made of PET with a thickness of 188 μm;

[0086] (2) coating, the material of which is ethylene vinyl acetate mixed with UV agent, with a thickness of 30 μm;

[0087] (3) a first substrate layer, made of TPU and having a thickness of 255 μm;

[0088] (4) a first mounting adhesive layer, the material of which is an acrylic pressure-sensitive adhesive mixed with glitter powder, and the thickness of which is 75 μm;

[0089] (5) a printing layer made of inkjet printing ink with a thickness of 2 μm;

[0090] (6) a second substrate layer, made of PVC and having a thickness of 120 μm;

[0091] (7) The second mounting adhesive layer is made of acrylic pressure-sensitive adhesive and has a thickness of 75 μm.

[0092] (8) Release film layer, the material of which is PET embossed release film, and the thickness of which is 185 μm.

[0093] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that the present invention is susceptible to various modifications and variations. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A spray-painted film with a flash point, characterized in that: It includes the following layers stacked in sequence: (1) Protective film layer, with a thickness of 2 to 188 μm; (2) Coating, the thickness of which is 2 to 30 μm; (3) a first substrate layer having a thickness of 20 to 500 μm; (4) The first mounting adhesive layer has a thickness of 5 to 100 μm; (5) Spraying layer, the thickness of which is 0.1 to 20 μm; (6) a second substrate layer having a thickness of 2 to 188 μm; (7) The second mounting adhesive layer has a thickness of 20 to 100 μm; (8) Release film layer, the thickness of which is 12 to 188 μm.

2. The inkjet film with flash points according to claim 1, characterized in that: The material of the protective film layer is PET, PE or OPP.

3. The inkjet film with flash points according to claim 1, characterized in that: The material of the coating is ethylene vinyl acetate mixed with UV agent.

4. The inkjet film with flash points according to claim 1, characterized in that: The material of the first substrate layer is TPU, PVC, TPH, PET or PP.

5. The inkjet film with flash points according to claim 1, characterized in that: The first installation adhesive layer is used to adhere the first base material layer and the inkjet printing layer together. The material of the first installation adhesive layer is an acrylic pressure-sensitive adhesive layer mixed with glitter powder.

6. The inkjet film with flash points according to claim 1, characterized in that: The spray-painted layer is a color layer or pattern layer sprayed by a spray-painting machine using inkjet printing ink by heating.

7. The inkjet film with flash points according to claim 1, characterized in that: The material of the second substrate layer is TPU, TPH, PET or PVC.

8. The inkjet film with flash points according to claim 1, characterized in that: The function of the installation adhesive layer is to adhere the second substrate layer and the release film layer together. The material of the second installation adhesive layer is an acrylic pressure-sensitive adhesive layer.

9. The inkjet film with flash points according to claim 1, characterized in that: The material of the release film layer is PET, PE, or OPP.

10. The inkjet film with flash points according to claim 9, characterized in that: The material of the release film layer is PET embossed release film.

Images