PET (Polyethylene Terephthalate) one-way perspective sticker capable of being painted

Abstract

The utility model relates to the technical field of inkjet advertising materials, and discloses an inkjet PET (Polyethylene Terephthalate) one-way perspective sticker which comprises a main body mechanism and an auxiliary mechanism, and the auxiliary mechanism is positioned in the main body mechanism. According to the one-way perspective PET sticker capable of being painted, the one-way perspective PET sticker is prepared by adopting the PET mask, the PET is high in tensile strength and very high in toughness, the PET is a high-crystallinity polymer, processing can be achieved without adding an auxiliary agent in the production process, good dimensional stability is achieved at the high temperature and the low temperature, but the PET does not have the ink absorption capacity, and therefore the one-way perspective PET sticker is not prone to being painted. Therefore, the polyurethane coating is adopted to assist and be compatible with solvent type, weak solvent type, UV and Latex spray painting forms, the coating is good in fastness, resistant to scraping, not prone to falling off and excellent in weather resistance through laboratory blending, pictures spray-painted through the four spray painting methods can achieve the effects of bright colors and uniform ink dots, the bottom paper of the product is of a three-layer structure, and the three-layer structure is adopted, so that the production cost is reduced, and the production efficiency is improved. And the problems of hole blocking in UV inkjet and arching in Latex inkjet can be prevented.

Description

Technical Field

[0001] The utility model relates to the technical field of spray-painted advertising materials, in particular to a one-way perspective PET sticker capable of being spray-painted. Background Art

[0002] One-way perspective sticker, also known as reflective one-way perspective film, reflective one-way transparent, is a porous film material that can both reflect and have one-way perspective. It is mainly used on glass such as buildings and car windows. It can see the external environment from the inside, while preventing the outside from seeing the internal environment, and can produce excellent reflective effects.

[0003] Prior art CN201941202U is a one-way perspective film. The utility model relates to the field of one-way perspective stickers for advertising. The problem to be solved is to overcome the defects in the prior art and provide a one-way perspective film with the best visual effect when viewed from the front and a good light transmittance effect in the reverse direction. A one-way perspective film is made of a composite PVC film, including a black PVC film on a lower layer and a white PVC film on it and through holes running through the two layers of PVC film. The thickness of the composite PVC film is 120 microns to 180 microns, and the total area of ​​the through holes is 20% to 60% of the total area of ​​the one-way perspective film. The utility model reasonably designs the thickness of the composite PVC film and the ratio of the total area of ​​the through holes to the area of ​​the one-way perspective film, so that the light transmittance of the one-way perspective film is 20% to 60%. Such a light transmittance range can not only ensure the authenticity of the printed pattern but also have good light transmittance.

[0004] A one-way perspective film in the prior art mainly adopts PVC film. Since the plasticizing temperature and decomposition temperature of PVC are quite close, toxic gas will be generated at a high temperature of about 130°C. Therefore, it cannot be processed directly and needs to add plasticizer to improve the processing performance. However, the plasticizer and PVC resin are connected by physical bonds, and the bonds are easily broken to produce free small molecules. These small molecules will migrate to the surface of the PVC mask, reducing the spraying effect of the mask. The precipitation of plasticizer will also increase the rigidity of the PVC mask, which is easy to become brittle in winter. In addition, due to the presence of small holes, stress concentration will occur when printing, which is easy to cause tearing. One-way perspective stickers are generally posted on glass, but PVC does not have environmental protection characteristics and is not suitable for indoor posting. It can only be used outdoors. Under the irradiation of sunlight, PVC will shrink and the ink absorption effect will be greatly reduced. Utility Model Content

[0005] 1. Technical issues to be resolved

[0006] The utility model aims to provide a one-way perspective PET sticker that can be sprayed, so as to solve the problem of poor practical performance of PVC film proposed in the above background technology.

[0007] (II) Technical solution

[0008] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a one-way perspective sticker of PET that can be sprayed, comprising a main structure and an auxiliary structure, wherein the auxiliary structure is located inside the main structure, and the main structure comprises a mask, a pressure-sensitive adhesive layer and release paper, and the mask is a PET mask.

[0009] Preferably, the mask has a thickness of 95 μm and a light transmittance of 40% or 45%.

[0010] Preferably, the pressure-sensitive adhesive layer is fixedly installed at the lower end of the mask, and the weight of the pressure-sensitive adhesive layer is 23-25g or 17-18g.

[0011] Preferably, the release paper is fixedly installed at the lower end of the pressure-sensitive adhesive layer.

[0012] Preferably, the auxiliary mechanism includes a polyurethane ink-absorbing coating, a black ink printing layer, punching paper, hot melt adhesive and plastic paper, and the polyurethane ink-absorbing coating is fixedly arranged on the upper end of the mask.

[0013] Preferably, the black ink printing layer is fixedly arranged at the lower end of the facial mask.

[0014] Preferably, the punching paper is fixedly installed inside the release paper, the hot melt adhesive is fixedly installed at the lower end of the punching paper, and the plastic paper is fixedly installed at the lower end of the hot melt adhesive. The punching paper, hot melt adhesive and plastic paper are combined into release paper, and the release paper is 75g punching paper, hot melt adhesive and 75g plastic paper.

[0015] Compared with the prior art, the beneficial effects of the utility model are:

[0016] 1. The one-way perspective sticker that can be printed is made of PET mask. Because PET has high tensile strength and strong toughness, and PET is a highly crystalline polymer, no additives need to be added during the production process to achieve processing. It has good dimensional stability at high and low temperatures, but PET does not have the ability to absorb ink. Therefore, polyurethane coating is used to assist in compatible solvent-based, weak solvent-based, UV, and Latex printing. After laboratory preparation, the coating has good fastness, scratch resistance, and excellent weather resistance. The pictures printed by the four printing methods can achieve bright colors and uniform ink dots. The base paper of this product uses a three-layer structure, which can prevent UV printing from blocking holes and Latex printing from arching.

[0017] 2. This printable PET one-way perspective sticker is more environmentally friendly than PVC. It will not tear when printing, which is convenient for construction. PET's weather resistance is also higher than PVC, its shelf life is longer, and its cost is lower than PVC mask with the same weather resistance. Because it does not contain plasticizers, the product's adhesiveness will not decrease with the increase of storage time, and its tensile performance is still good. Compared with general economical PVC one-way perspective film, this product is compatible with all commonly used printing forms. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0019] Figure 2 This is a schematic diagram of the three-dimensional structure of the polyurethane ink-absorbing coating of the utility model;

[0020] Figure 3 This is a schematic diagram of the plastic paper three-dimensional structure of the utility model;

[0021] Figure 4 The figure is a schematic diagram of the three-dimensional structure of the punching paper of the utility model.

[0022] In the figure: 1. main body; 101. facial mask; 102. pressure-sensitive adhesive layer; 103. release paper; 2. auxiliary body; 201. polyurethane ink-absorbing coating; 202. black ink printing layer; 203. punching paper; 204. hot melt adhesive; 205. plastic paper. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] See also Figure 1 - Figure 4 The utility model provides a technical solution: a one-way perspective sticker of PET that can be sprayed, including a main body mechanism 1 and an auxiliary mechanism 2, the auxiliary mechanism 2 is located inside the main body mechanism 1, the main body mechanism 1 includes a mask 101, a pressure-sensitive adhesive layer 102 and a release paper 103, and the mask 101 is a PET mask.

[0025] The thickness of the mask 101 is 95 μm, the transmittance is 40% or 45%, the pressure-sensitive adhesive layer 102 is fixedly installed at the lower end of the mask 101 , the weight of the pressure-sensitive adhesive layer 102 is 23-25 ​​g or 17-18 g, and the release paper 103 is fixedly installed at the lower end of the pressure-sensitive adhesive layer 102 .

[0026] The auxiliary mechanism 2 includes a polyurethane ink-absorbing coating 201, a black ink printing layer 202, a punching paper 203, a hot melt adhesive 204 and a plastic paper 205. The polyurethane ink-absorbing coating 201 is fixedly arranged on the upper end of the mask 101, the black ink printing layer 202 is fixedly arranged on the lower end of the mask 101, the punching paper 203 is fixedly arranged inside the release paper 103, the hot melt adhesive 204 is fixedly arranged on the lower end of the punching paper 203, and the plastic paper 205 is fixedly arranged on the lower end of the hot melt adhesive 204. The punching paper 203, the hot melt adhesive 204 and the plastic paper 205 are combined into the release paper 103. The release paper 103 is 75g punching paper 203, hot melt adhesive 204 and 75g plastic paper.

[0027] Embodiment 1: The thickness of the PET mask is 95 μm, the transmittance is 40%, the weight of the pressure-sensitive adhesive layer 102 is 23-25 ​​g, the release paper 103 is 75 g punching paper 203, hot melt adhesive 204, 75 g plastic paper 205, and the product is tested according to the standard FINAT. The annular initial adhesion provided by the pressure-sensitive adhesive layer 102 to the product is 4 N / 25 mm, and the 24h, 180° peeling force is 3 N / 25 mm. The product is tested using a QUV ultraviolet aging accelerated testing machine. The color difference of the mask 101 is less than 4. After solvent-based, weak solvent-based, UV inkjet printing, and Latex inkjet printing tests, the ink absorption effect is good, the picture accuracy is high, and no arching phenomenon occurs.

[0028] Example 2: The thickness of the PET mask is 95 μm, the transmittance is 45%, the weight of the pressure-sensitive adhesive layer 102 is 17-18 g, the release paper 103 is 75 g punching paper 203, hot melt adhesive 204, 75 g plastic paper 205, and the product is tested according to the standard FINAT. The annular initial adhesion provided by the pressure-sensitive adhesive layer 102 to the product is 3 N / 25 mm, and the 24h, 180° peeling force is 2 N / 25 mm. The product is tested using a QUV ultraviolet aging accelerated tester. The color difference of the mask 101 is less than 4. After the tests of solvent-based, weak solvent-based, UV inkjet and Latex inkjet, the ink absorption effect is good, the picture precision is high, and there is no arching phenomenon. PET is more environmentally friendly than PVC, it will not tear when printing, and it is easy to construct. PET's weather resistance is also higher than PVC, its shelf life is longer, and its cost is lower than that of PVC mask with the same weather resistance. Because it does not contain plasticizer, the product's adhesiveness will not decrease with the increase of storage time, and its tensile performance is still good. Compared with the general economical PVC one-way perspective film, this product is compatible with all commonly used inkjet forms.

[0029] Working principle: When the printable PET one-way perspective sticker is needed, the device consists of a mask 101, a pressure-sensitive adhesive layer 102 and a release paper 103. The upper end of the mask 101 is provided with a polyurethane ink-absorbing coating 201, and the lower end of the mask 101 is provided with a black ink printing layer 202. The release paper 103 is composed of punching paper 203, hot melt adhesive 204 and plastic paper 205. The mask 101 is a PET mask. The PET mask is used to prepare the one-way perspective sticker because PET has high tensile strength and strong toughness. PET is a highly crystalline polymer. No additives need to be added during the production process to achieve processing. It has good dimensional stability at high and low temperatures. However, PET does not have the ability to absorb ink, so a polyurethane coating is used to assist compatibility with solvent-based, weak solvent-based, The UV and Latex printing forms are formulated in the laboratory to make the coating have good fastness, scratch resistance, and not easy to fall off, and have excellent weather resistance. The pictures printed by the four printing methods can achieve bright colors and uniform ink dots. The base paper of this product uses a three-layer structure, which can prevent UV printing from clogging and Latex printing from arching. PET is more environmentally friendly than PVC, will not tear when printing, and is easy to construct. PET's weather resistance is also higher than PVC, its shelf life is longer, and its cost is lower than PVC masks with the same weather resistance. Because it does not contain plasticizers, the product's adhesiveness will not decrease with the increase of storage time, and its tensile properties are still good. Compared with general economical PVC one-way perspective films, this product is compatible with all commonly used printing forms.

[0030] Finally, it should be noted that the above content is only used to illustrate the technical solution of the utility model, rather than to limit the protection scope of the utility model. Simple modifications or equivalent substitutions of the technical solution of the utility model by ordinary technicians in this field do not deviate from the essence and scope of the technical solution of the utility model.

Claims

1. A one-way perspective PET sticker capable of being sprayed, comprising a main body (1) and an auxiliary body (2), characterized in that: The auxiliary mechanism (2) is located inside the main mechanism (1); the main mechanism (1) comprises a facial mask (101), a pressure-sensitive adhesive layer (102) and a release paper (103); and the facial mask (101) is a PET facial mask.

2. The one-way perspective PET sticker capable of being sprayed according to claim 1, characterized in that: The mask (101) has a thickness of 95 μm and a light transmittance of 40% or 45%.

3. The one-way perspective PET sticker capable of being sprayed according to claim 2, characterized in that: The pressure-sensitive adhesive layer (102) is fixedly mounted on the lower end of the facial mask (101), and the weight of the pressure-sensitive adhesive layer (102) is 23-25 ​​g or 17-18 g.

4. The one-way perspective PET sticker capable of being sprayed according to claim 3, characterized in that: The release paper (103) is fixedly mounted on the lower end of the pressure-sensitive adhesive layer (102).

5. The one-way perspective PET sticker capable of being sprayed according to claim 4, characterized in that: The auxiliary mechanism (2) comprises a polyurethane ink-absorbing coating (201), a black ink printing layer (202), punching paper (203), hot melt adhesive (204) and plastic paper (205), and the polyurethane ink-absorbing coating (201) is fixedly arranged on the upper end of the mask (101).

6. The one-way perspective PET sticker capable of being sprayed according to claim 5, characterized in that: The black ink printing layer (202) is fixedly arranged at the lower end of the facial mask (101).

7. The one-way perspective PET sticker capable of being sprayed according to claim 6, characterized in that: The punching paper (203) is fixedly mounted inside the release paper (103), the hot melt adhesive (204) is fixedly mounted at the lower end of the punching paper (203), and the plastic paper (205) is fixedly mounted at the lower end of the hot melt adhesive (204). The punching paper (203), the hot melt adhesive (204) and the plastic paper (205) are combined into the release paper (103). The release paper (103) is 75g of punching paper (203), hot melt adhesive (204) and 75g of plastic paper.

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