A tactile film for hot stamping aluminized paper and its production process

Abstract

The present invention relates to the technical field of hot stamping, and particularly relates to a tactile film for hot stamping an electrothermal aluminum and its production process. The tactile film for hot stamping an electrothermal aluminum includes a tactile film and an electrothermal aluminum hot stamped on the tactile film; a tactile layer is provided on the surface layer of the tactile film; the electrothermal aluminum includes a base film layer, a release layer, a color layer, an aluminized layer, and an adhesive layer arranged from top to bottom, and the electrothermal aluminum is transferred to the surface of the tactile layer by hot stamping; the release layer is coated with silicone resin; the color layer is coated with a mixture of synthetic resin and dye; the aluminized layer is high-purity aluminum; the adhesive layer is coated with thermoplastic resin. When hot stamping the electrothermal aluminum, this tactile film for hot stamping an electrothermal aluminum does not need to pre-treat the hot stamping area by applying a solvent or baking hot stamping method, and can directly hot stamp the electrothermal aluminum onto the surface of the tactile film, reducing the hot stamping process, avoiding the occurrence of damage to the surrounding area of the hot stamping area during pre-treatment, and improving the overall quality of the tactile film.

Description

Technical Field

[0001] The present invention relates to the technical field of hot stamping, and particularly relates to a tactile film for hot stamping aluminum electroplating and a production process thereof. Background Art

[0002] With the development of society and economy, people's requirements for products are no longer limited to the products themselves, and thus higher requirements and expectations are placed on the packaging of products. For merchants, good packaging is not only a reflection of the tone of the inner product, but also the most intuitive first impression given to consumers. Therefore, during the process of unpacking, in addition to the visual presentation, touch is also a very important way to present the quality. A dry touch gives people a feeling of toughness and sharpness, a smooth touch makes people feel simple and grand, while a suede touch gives people an imagination of high-class and luxury - this is where the significance of the tactile film lies. It gives people different feelings through rich touches and attaches the feelings to the products after unpacking, well reflecting the characteristics and styles of the products. When the tactile film is combined with hot stamping, the double effects of vision and touch can be better achieved.

[0003] In the currently common tactile film hot stamping aluminum electroplating technology, the most common and easily occurring problem after hot stamping is that it is very difficult to successfully hot stamp, or the gold is likely to fall off after hot stamping. Currently, the commonly used solutions in the industry are: applying a solvent pretreatment to the surface to be hot stamped or performing a baking pretreatment on the surface to be hot stamped. By these two methods, the characteristics of the tactile film are changed to make it easier to hot stamp. However, such pretreatment methods: the solvent application is likely to exceed the boundary, the baking range is extremely difficult to control, the treated area is relatively uncontrollable, and the surface tactile structure of the tactile film outside the hot stamping area will be damaged during the pretreatment process, thus affecting the touch of other positions outside the hot stamping area and the tactile quality.

[0004] Moreover, from the perspective of production, having an additional pretreatment step means an increase in production cost and time cost, which is not conducive to improving production efficiency and economic benefits. Summary of the Invention

[0005] In order to overcome the disadvantages and deficiencies existing in the prior art, the purpose of the present invention is to provide a tactile film for hot stamping aluminum electroplating. When hot stamping aluminum electroplating on this tactile film, there is no need to perform a pretreatment on the hot stamping area by applying a solvent or baking, and the aluminum electroplating can be directly hot stamped onto the surface of the tactile film, reducing the hot stamping process and avoiding the occurrence of damage to the surrounding area of the hot stamping area during pretreatment, thus improving the overall quality of the tactile film.

[0006] Another purpose of the present invention is to provide a production process of a tactile film for hot stamping aluminum electroplating. The operation process of this production process is simple, the quality of the produced tactile film for hot stamping aluminum electroplating is good, the hot stamping adhesion performance is excellent, and it is not easy to fall off.

[0007] The object of the present invention is achieved by the following technical solutions: A tactile film for hot stamping aluminized paper, comprising a tactile film and aluminized paper hot stamped on the tactile film;

[0008] A tactile layer is provided on the surface layer of the tactile film;

[0009] The aluminized paper comprises a base film layer, a release layer, a color layer, an aluminized layer and an adhesive layer arranged from top to bottom. The aluminized paper is transferred to the surface of the tactile layer by hot stamping;

[0010] The release layer is coated with silicone resin;

[0011] The color layer is coated with a mixture of synthetic resin and dye;

[0012] The aluminized layer is high-purity aluminum;

[0013] The adhesive layer is coated with thermoplastic resin.

[0014] The thickness of the tactile layer is 4 - 7μm. The tactile layer comprises tactile oil and a curing agent, and the mass ratio of the tactile oil to the curing agent is 5 - 7:1.

[0015] The tactile oil is a water-based tactile oil, which is the water-based self-extinguishing polyurethane resin of model RL5301 produced by Guangzhou Ruilin New Materials Co., Ltd., and the curing agent is a water-based polyurethane curing agent produced by Dongguan Liangkang Chemical Technology Co., Ltd.

[0016] The tactile film is further provided with an ink layer, a film layer and an adhesive layer. The tactile layer, the ink layer, the film layer and the adhesive layer are arranged from top to bottom in sequence.

[0017] The thickness of the ink layer is 1 - 2μm, the thickness of the film layer is 11 - 14μm, and the thickness of the adhesive layer is 2 - 4μm.

[0018] The ink layer is printed with environment-friendly water-based ink, the film layer is BOPP, and the adhesive layer is coated with silicone pressure-sensitive adhesive.

[0019] The base film layer is a PET film layer, and the thickness of the base film layer is 15 - 19μm.

[0020] The coating amount of the silicone resin of the release layer is 0.4 - 0.6g / m 2 .

[0021] The coating amount of the color layer is 1.2 - 1.4g / m 2 .

[0022] The thickness of the aluminized layer is 0.03 - 0.045μm.

[0023] The coating amount of the adhesive layer is 1.4 - 1.6 g / m 2 .

[0024] In the hot stamping foil of the present application, the thickness of the base film layer is controlled within 15 - 19 μm, the thickness of the aluminized layer is controlled within 0.03 - 0.045 μm, the coating amount of the silicone resin of the release layer is controlled within 0.4 - 0.6 g / m 2 , the coating amount of the color layer is controlled within 1.2 - 1.4 g / m 2 , and the coating amount of the adhesive layer is controlled within 1.4 - 1.6 g / m 2 . The coating methods of the three layers are all dry coating, and the precise control of the coating amount enables the precise control of the thickness of each layer. At the same time, in the present application, the base film uses a PER film, the release layer uses a silicone resin, the color layer uses a synthetic resin and a dye, the aluminized layer uses high-purity aluminum, and the adhesive layer uses a thermoplastic resin.

[0025] The hot stamping foil of the present application selects the above specific combination of raw materials for each layer and controls the thickness of each layer within the above range, so that the hot stamping foil of the present application can be directly hot stamped on the surface of the tactile film without pre-treating the surface of the tactile film by applying a solvent or baking. Moreover, it ensures the yield rate of production and the hot stamping effect. The adhesion of the hot stamping material of the tactile film obtained by hot stamping is good, not easy to fall off, and the antioxidant performance of the hot stamping pattern is excellent. The hot stamping pattern is not easy to change color, turn black or fade. And due to the above improvements in the present application, the pre-treatment process is reduced, effectively reducing the production cost. Compared with the existing hot stamping process that requires pre-treatment, the production efficiency of the production process of the present application is increased by 30%.

[0026] In the tactile film of the present application, the thickness of the tactile layer is controlled within 4 - 7 μm, the mass ratio of the tactile oil to the curing agent is controlled within 5 - 7:1, the thickness of the ink layer is controlled within 1 - 2 μm, the thickness of the film layer is controlled within 11 - 14 μm, and the thickness of the glue layer is controlled within 2 - 4 μm. By controlling the thickness of each layer, the overall thickness of the tactile film is effectively controlled. At the same time, by controlling the mass ratio of the tactile oil to the curing agent in the tactile layer, the content of silicon and wax oil in the tactile layer is effectively controlled, so that the content of silicon and wax oil remains within the optimal value range. At the same time, it avoids the excessive thickness of the tactile film and the excessive content of silicon and wax oil, which seriously affects the hot stamping quality and damages the adhesion of the hot stamping material, greatly reducing the probability of gold dropping or gold flying at the hot stamping position. At the same time, if the thickness of the tactile film is too small, the touch of the tactile film will be damaged. The present application controls the tactile film within the most reasonable range through the precise control of the thickness of each layer above, so that the hot stamping material of the present application has excellent adhesion while the tactile film has a good touch.

[0027] The layers of the hot stamping aluminum foil and the tactile film of the present application are selected with specific raw materials and thicknesses, and the two cooperate with each other synergistically, so that the tactile film with hot stamping aluminum foil in the present application does not require solvent coating or baking pretreatment processes during the hot stamping process, reducing the hot stamping process, avoiding damage to the surrounding area of the hot stamping area during pretreatment, having good touch, improving the overall quality of the tactile film, having a high yield rate of the production process, increasing the hot stamping efficiency by 30%, and having good adhesion of the hot stamping material of the hot stamping aluminum foil and the tactile film, not being easy to fall off, discolor, turn black or fade.

[0028] A production process of a tactile film with hot stamping aluminum foil includes the following steps: using a flat-bed hot stamping machine to hot stamp the hot stamping aluminum foil onto the surface of the tactile layer of the tactile film.

[0029] The hot stamping temperature is 130 - 140 °C, the hot stamping pressure is 1.3 - 1.7 T, the ambient temperature is 15 - 25 °C, the ambient humidity is 60 - 65%, and the hot stamping speed is 3500 sheets / h.

[0030] The beneficial effect of the present invention is that the tactile film with hot stamping aluminum foil of the present invention does not require pretreatment of the hot stamping area by means of applying solvent or baking during hot stamping of the hot stamping aluminum foil, and the hot stamping aluminum foil can be directly hot stamped onto the surface of the tactile film, reducing the hot stamping process and avoiding damage to the surrounding area of the hot stamping area during pretreatment, improving the overall quality of the tactile film.

[0031] The production process of the present invention has a simple operation process, and the produced tactile film with hot stamping aluminum foil has good quality and good hot stamping adhesion performance and is not easy to fall off. Detailed Embodiments

[0032] For the convenience of understanding by those skilled in the art, the present invention will be further described below in conjunction with embodiments, and the content mentioned in the embodiments does not limit the present invention.

[0033] Embodiment 1

[0034] A tactile film with hot stamping aluminum foil includes a tactile film and hot stamping aluminum foil hot stamped on the tactile film;

[0035] A tactile layer is provided on the surface layer of the tactile film;

[0036] The hot stamping aluminum foil includes a base film layer, a release layer, a color layer, an aluminized layer and an adhesive layer arranged from top to bottom, and the hot stamping aluminum foil is transferred to the surface of the tactile layer by hot stamping;

[0037] The release layer is coated with silicone resin;

[0038] The color layer is coated with a mixture of synthetic resin and dye;

[0039] The aluminized layer is high-purity aluminum;

[0040] The adhesive layer is formed by coating a thermoplastic resin.

[0041] The thickness of the touch layer is 4 μm. The touch layer contains a touch oil and a curing agent, and the mass ratio of the touch oil to the curing agent is 5:1.

[0042] The touch oil is a water-based touch oil.

[0043] The touch film is further provided with an ink layer, a film layer, and an adhesive layer. The touch layer, the ink layer, the film layer, and the adhesive layer are arranged in sequence from top to bottom.

[0044] The thickness of the ink layer is 1 μm, the thickness of the film layer is 11 μm, and the thickness of the adhesive layer is 2 μm.

[0045] The ink layer is printed with an environment-friendly water-based ink, the film layer is BOPP, and the adhesive layer is formed by coating an organosilicon pressure-sensitive adhesive.

[0046] The base film layer is a PET film layer, and the thickness of the base film layer is 15 μm.

[0047] The coating amount of the organosilicon resin of the release layer is 0.4 g / m 2 , and the coating amount of the color layer is 1.2 g / m 2 .

[0048] The thickness of the aluminized layer is 0.03 μm.

[0049] The coating amount of the adhesive layer is 1.4 g / m 2 .

[0050] A production process of a hot stamping aluminized touch film includes the following steps: using a flat-bed hot stamping machine to hot stamp aluminized paper onto the surface of the touch layer of the touch film.

[0051] The hot stamping temperature is 130 °C, the hot stamping pressure is 1.3 T, the ambient temperature is 15 °C, the ambient humidity is 60%, and the hot stamping speed is 3,500 sheets / h.

[0052] Example 2

[0053] A hot stamping aluminized touch film includes a touch film and aluminized paper hot stamped on the touch film;

[0054] The surface layer of the touch film is provided with a touch layer;

[0055] The aluminized paper includes a base film layer, a release layer, a color layer, an aluminized layer, and an adhesive layer arranged from top to bottom. The aluminized paper is transferred onto the surface of the touch layer by hot stamping;

[0056] The release layer is coated with silicone resin;

[0057] The color layer is coated with a mixture of synthetic resin and dye;

[0058] The aluminized layer is high-purity aluminum;

[0059] The adhesive layer is coated with thermoplastic resin.

[0060] The thickness of the touch layer is 5 μm. The touch layer contains touch oil and a curing agent, and the mass ratio of touch oil to curing agent is 6:1.

[0061] The touch oil is water-based touch oil.

[0062] The touch film is further provided with an ink layer, a film layer, and an adhesive layer, and the touch layer, ink layer, film layer, and adhesive layer are arranged in sequence from top to bottom.

[0063] The thickness of the ink layer is 1.5 μm, the thickness of the film layer is 12 μm, and the thickness of the adhesive layer is 3 μm.

[0064] The ink layer is printed with environment-friendly water-based ink, the film layer is BOPP, and the adhesive layer is coated with silicone pressure-sensitive adhesive.

[0065] The base film layer is a PET film layer, and the thickness of the base film layer is 17 μm.

[0066] The coating amount of the silicone resin of the release layer is 0.5 g / m 2 and the coating amount of the color layer is 1.3 g / m 2 .

[0067] The thickness of the aluminized layer is 0.04 μm.

[0068] The coating amount of the adhesive layer is 1.5 g / m 2 .

[0069] A production process of a touch film for hot stamping electroaluminum includes the following steps: using a flat-bed hot stamping machine to hot stamp electroaluminum onto the surface of the touch layer of the touch film.

[0070] The hot stamping temperature is 135 °C, the hot stamping pressure is 1.5 T, the ambient temperature is 20 °C, the ambient humidity is 63%, and the hot stamping speed is 3500 sheets / h.

[0071] Example 3

[0072] A touch film for hot stamping electroaluminum includes a touch film and electroaluminum hot stamped on the touch film;

[0073] The surface layer of the touch film is provided with a touch layer;

[0074] The hot stamping foil includes a base film layer, a release layer, a color layer, an aluminized layer, and an adhesive layer arranged from top to bottom. The hot stamping foil is transferred to the surface of the touch layer by hot stamping;

[0075] The release layer is coated with silicone resin;

[0076] The color layer is coated with a mixture of synthetic resin and dye;

[0077] The aluminized layer is high-purity aluminum;

[0078] The adhesive layer is coated with thermoplastic resin.

[0079] The thickness of the touch layer is 7μm. The touch layer contains touch oil and a curing agent, and the mass ratio of touch oil to the curing agent is 7:1.

[0080] The touch oil is water-based touch oil.

[0081] The touch film is also provided with an ink layer, a film layer, and an adhesive layer. The touch layer, the ink layer, the film layer, and the adhesive layer are arranged from top to bottom in sequence.

[0082] The thickness of the ink layer is 2μm, the thickness of the film layer is 14μm, and the thickness of the adhesive layer is 4μm.

[0083] The ink layer is printed with environment-friendly water-based ink, the film layer is BOPP, and the adhesive layer is coated with silicone pressure-sensitive adhesive.

[0084] The base film layer is a PET film layer, and the thickness of the base film layer is 19μm.

[0085] The coating amount of the silicone resin in the release layer is 0.6g / m 2 and the coating amount of the color layer is 1.4g / m 2 .

[0086] The thickness of the aluminized layer is 0.045μm.

[0087] The coating amount of the adhesive layer is 1.6g / m 2 .

[0088] A production process of a touch film with hot stamping foil includes the following steps: using a flat-bed hot stamping machine to hot stamp the hot stamping foil onto the surface of the touch layer of the touch film.

[0089] The hot stamping temperature is 140°C, the hot stamping pressure is 1.7T, the ambient temperature is 25°C, the ambient humidity is 65%, and the hot stamping speed is 3500 sheets / h.

[0090] Comparative Example 1

[0091] The difference between this comparative example and Example 1 is that:

[0092] The mass ratio of the touch oil to the curing agent is 4:1.

[0093] Comparative Example 2

[0094] The difference between this comparative example and Example 1 is that:

[0095] The base film layer is a PET film layer, and the thickness of the base film layer is 15 μm.

[0096] The coating amount of the silicone resin of the release layer is 0.3 g / m 2 .

[0097] The coating amount of the color layer is 1 g / m 2 .

[0098] The thickness of the aluminized layer is 0.02 μm.

[0099] The coating amount of the adhesive layer is 1 g / m 2 .

[0100] Comparative Example 3

[0101] The difference between this comparative example and Example 1 is that:

[0102] The hot stamping temperature is 110 °C, the hot stamping pressure is 1.0 T, the ambient temperature is 15 °C, the ambient humidity is 60%, and the hot stamping speed is 3500 sheets / h.

[0103] Comparative Example 4

[0104] The difference between this comparative example and Example 3 is that:

[0105] The mass ratio of the touch oil to the curing agent is 9:1.

[0106] Comparative Example 5

[0107] The difference between this comparative example and Example 3 is that:

[0108] The base film layer is a PET film layer, and the thickness of the base film layer is 22 μm.

[0109] The coating amount of the silicone resin of the release layer is 0.8 g / m 2 .

[0110] The coating amount of the color layer is 1.6 g / m 2 .

[0111] The thickness of the aluminized layer is 0.06 μm.

[0112] The coating amount of the adhesive layer is 2 g / m 2 .

[0113] Comparative Example 6

[0114] The difference between this comparative example and Example 3 is as follows:

[0115] The hot stamping temperature is 160 °C, the hot stamping pressure is 2 T, the ambient temperature is 25 °C, the ambient humidity is 65%, and the hot stamping speed is 3500 sheets / h.

[0116] The adhesion performance of the products of Examples 1 - 3 and Comparative Examples 1 - 6 was detected, and the touch feelings were compared.

[0117] Detection method: Use 3M tape to precisely fit the test part (the tape adhesion ≥ 25 mm). After fitting, use an eraser to wipe the tape forcefully to ensure precise fitting between the tape and the test part. After fitting for 2 minutes, tear off the tape within 1 second at an angle of 45°. Calculate and record the average peeling area of the hot stamping graphics of each group of products. If the average peeling area is less than 10%, it is qualified.

[0118]

[0119] The above embodiments are the preferred implementation schemes of the present invention. In addition, the present invention can also be implemented in other ways. Any obvious replacement without departing from the concept of the present invention is within the protection scope of the present invention.

Claims

1. A tactile film for hot stamping aluminum foil, characterized in that: It includes a tactile film and an electroaluminum hot-stamped on the tactile film; A tactile layer is provided on the surface layer of the tactile film; The electroaluminum includes a base film layer, a release layer, a color layer, an aluminized layer, and an adhesive layer arranged from top to bottom. The electroaluminum is transferred to the surface of the tactile layer by hot stamping; The release layer is coated with silicone resin; The color layer is coated with a mixture of synthetic resin and dye; The aluminized layer is high-purity aluminum; The adhesive layer is coated with thermoplastic resin; The thickness of the tactile layer is 7μm. The tactile layer contains tactile oil and a curing agent, and the mass ratio of the tactile oil to the curing agent is 7:1; The tactile oil is water-based tactile oil; The tactile film is further provided with an ink layer, a film layer, and an adhesive layer. The tactile layer, the ink layer, the film layer, and the adhesive layer are arranged from top to bottom in sequence; The thickness of the ink layer is 2μm, the thickness of the film layer is 14μm, and the thickness of the adhesive layer is 4μm; The ink layer is printed with environment-friendly water-based ink, the film layer is BOPP, and the adhesive layer is coated with silicone pressure-sensitive adhesive; The base film layer is a PET film layer, and the thickness of the base film layer is 19μm; The coating amount of the silicone resin of the release layer is 0.6 g / m 2 , and the coating amount of the color layer is 1.4 g / m 2 ; The thickness of the aluminized layer is 0.045μm; The coating amount of the adhesive layer is 1.6 g / m 2 .

2. The production process of a tactile film for hot stamping electroaluminum as described in claim 1, characterized in that: It includes the following steps: Use a flat-bed hot stamping machine to hot stamp the electroaluminum onto the surface of the tactile layer of the tactile film.

3. The production process of a tactile film for hot stamping aluminum foil according to claim 2, characterized in that: The hot stamping temperature is 130 - 140°C, the hot stamping pressure is 1.3 - 1.7T, the ambient temperature is 15 - 25°C, the ambient humidity is 60 - 65%, and the hot stamping speed is 3500 sheets / h.

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