Waterproof scratch-resistant re-stickable polymer label and process for making same

Abstract

The application belongs to the technical field of label making, and particularly relates to a waterproof and scratch-resistant high polymer label capable of being reattached and a manufacturing process thereof. The manufacturing process comprises the following steps: providing a polycarbonate (PC) material substrate, the polycarbonate material substrate having a first surface and a second surface arranged oppositely; screen printing a base color and text on the first surface of the polycarbonate material substrate to form a reverse printing layer; screen printing a matte oil on the second surface of the polycarbonate material substrate to form a surface printing layer; providing double-sided adhesive tape with release paper, and attaching the double-sided adhesive tape with release paper on the first surface of the polycarbonate material substrate; and adopting an automatic die-cutting process to cut off the polycarbonate material substrate and the double-sided adhesive tape, and not to cut off the release paper, so as to form a waterproof and scratch-resistant high polymer label product capable of being reattached. The high polymer label manufactured by the manufacturing process has the advantages of scratch resistance, wear resistance, waterproofness and reattachment.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of label making, and particularly relates to a waterproof scratch-resistant reattachable high polymer label and a manufacturing process thereof. BACKGROUND

[0002] In the production process of electronic products, a label is generally attached to the surface of the shell of the electronic product to display the relevant information of the electronic product, so the relevant information needs to be first set on the label. The layer structure of the label of a traditional electronic product shell part is a heat-sensitive coating layer, a substrate layer, glue, and release paper arranged in sequence. After the label passes through a printer and is heated, the label information will be presented on the heat-sensitive coating layer. Since the heat-sensitive coating layer is the outermost layer exposed to the air, it has the defects of not being scratch-resistant, not being wear-resistant, and not being waterproof, which causes the label paper to be unable to be stored for a long time. Moreover, the surface of the label of the traditional electronic product shell part cannot be reattached, and the label without surface printing treatment has a rough appearance and a rough hand feeling, and the surface (raw material color) of the label cannot meet the requirements of the customer in terms of haze value and other aspects. After the surface of the high polymer label is attached to other labels, there are problems such as bubbles, wrinkles, and peeling defects on the surface of the label after high-temperature and high-humidity tests. SUMMARY

[0003] The present application aims to provide a waterproof scratch-resistant reattachable high polymer label and a manufacturing process thereof, and aims to solve the technical problems of the label of the electronic product shell part produced in the prior art, such as not being scratch-resistant, not being wear-resistant, not being waterproof, and being unable to be reattached.

[0004] To achieve the above-mentioned purpose, the manufacturing process of the waterproof scratch-resistant reattachable high polymer label provided by the embodiments of the present application includes the following steps:

[0005] S100: A polycarbonate PC material substrate is provided, and the polycarbonate PC material substrate has a first surface and a second surface arranged oppositely;

[0006] S200: A base color and text are screen printed on the first surface of the polycarbonate PC material substrate to form a reverse printing layer;

[0007] S300: Matte oil is screen printed on the second surface of the polycarbonate PC material substrate to form a surface printing layer;

[0008] S400: A double-sided adhesive tape with release paper is provided, and the double-sided adhesive tape with release paper is attached to the first surface of the polycarbonate PC material substrate;

[0009] S500: An automatic die-cutting process is used to cut off the polycarbonate PC material substrate and the double-sided adhesive tape, and the release paper is not cut off, so as to form a waterproof scratch-resistant reattachable high polymer label product.

[0010] Optionally, in the step S100, the first surface of the polycarbonate PC material substrate is a smooth surface, and the second surface of the polycarbonate PC material substrate is a frosted surface.

[0011] Optionally, in the step S200, a 380-mesh screen printing screen cloth is selected for screen printing the matte oil, and a rubber scraper is selected.

[0012] Optionally, in the step S200, the blade of the scraper selected for screen printing the matte oil is rectangular, and the blade hardness is 55-65.

[0013] Optionally, in the step S200, the matte oil comprises the following mass percentages:

[0014] fog oil 60-80%

[0015] glazing oil 20-40%.

[0016] The fog oil is composed of 1-10% 2-hydroxyethyl acrylate, 1-10% silicon dioxide, 20-30% ester monomer, 10-20% alicyclic monomer, and 60-70% other components.

[0017] Optionally, in the step S300, a 380-mesh screen printing screen cloth and a rubber scraper are selected for screen printing the base color, and a 420-mesh screen printing screen cloth and a rubber scraper are selected for screen printing the character color.

[0018] Optionally, in the step S300, the blade of the scraper selected for screen printing the base color is rectangular, and the blade hardness is 55-65; the blade of the scraper selected for screen printing the base color is rectangular, and the blade hardness is 65-75.

[0019] Optionally, in the step S400, the double-sided adhesive tape is a double-sided adhesive tape without a substrate obtained by coating and pressing a propionic acid adhesive, and the color of the propionic acid adhesive is transparent.

[0020] The manufacturing process of the waterproof scratch-resistant reattachable high polymer label provided by the embodiment of the present application has at least one of the following technical effects: the waterproof scratch-resistant reattachable high polymer label formed by the manufacturing process of the present application can be widely applied to the outer part of the electronic product shell, the polycarbonate PC material substrate is arranged, the mechanical strength, high temperature resistance, friction resistance, corrosion resistance and high toughness of the polycarbonate PC material substrate are utilized, after printing and surface treatment processing, the surface of the high polymer label has excellent scratch resistance, and a double-sided adhesive tape with release paper is attached to the surface of the high polymer label, so that the high polymer label after attachment can pass the extreme environment test of high temperature, low temperature, high humidity and low humidity, and the surface of the high polymer label has no bubbles, wrinkles, discoloration and other defects, and has the advantages of scratch resistance, abrasion resistance, waterproofness and reattachability.

[0021] Another embodiment of the present application provides a waterproof scratch-resistant reattachable high polymer label prepared by the manufacturing process.

[0022] Optionally, the thickness of the polycarbonate PC material substrate is between 125 μm and 500 μm.

[0023] The thickness of the surface printing layer is between 8 μm and 10 μm.

[0024] The thickness of the reverse printing layer is between 8 μm and 18 μm.

[0025] The thickness of the double-sided adhesive tape is between 35 μm and 45 μm.

[0026] The thickness of the release paper is between 80 μm and 150 μm.

[0027] The manufacturing process of the waterproof scratch-resistant reattachable high polymer label provided by the embodiment of the present application has at least one of the following technical effects: the waterproof scratch-resistant reattachable high polymer label formed by the manufacturing process of the present application can be widely applied to the outer part of the electronic product shell, the polycarbonate PC material substrate is arranged, the mechanical strength, high temperature resistance, friction resistance, corrosion resistance and high toughness of the polycarbonate PC material substrate are utilized, after printing and surface treatment processing, the surface of the high polymer label has excellent scratch resistance, and a double-sided adhesive tape with release paper is attached to the surface of the high polymer label, so that the high polymer label after attachment can pass the extreme environment test of high temperature, low temperature, high humidity and low humidity, and the surface of the high polymer label has no bubbles, wrinkles, discoloration and other defects, and has the advantages of scratch resistance, abrasion resistance, waterproofness and reattachability. BRIEF DESCRIPTION OF DRAWINGS

[0028] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings in the following description only constitute some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained from these drawings without creative labor.

[0029] Fig. 1 A cutaway view of the waterproof scratch-resistant re-stickable polymer label provided by the embodiments of the present application.

[0030] Fig. 2 A flowchart of the manufacturing process of the waterproof scratch-resistant re-stickable polymer label provided by the embodiments of the present application.

[0031] In the drawings, various reference signs represent:

[0032] 10 - surface print layer 20 - polycarbonate PC material substrate 30 - reverse print layer

[0033] 40 - double-sided adhesive 50 - release paper. DETAILED DESCRIPTION

[0034] The embodiments of the present application will be described in detail below, examples of which are shown in the drawings, wherein the same or similar notations represent the same or similar elements or elements having the same or similar functions throughout. The following will be described by referring to the drawings, and specific embodiments will be described in detail. Figs. 1-2 The described embodiments are exemplary, and are intended to explain the embodiments of the present application, and cannot be understood as a limitation of the present application.

[0035] In the description of the embodiments of the present application, it should be understood that the terms "length", "width", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the purpose of facilitating the description of the embodiments of the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the device or element indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present application.

[0036] In addition, the terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more of the features. In the description of the embodiments of the present application, the meaning of "multiple" is two or more, unless otherwise specifically limited.

[0037] In the embodiments of the present application, unless specifically defined and limited otherwise, the terms "mounting", "connecting", "connecting", "fixing" and the like should be understood in a broad sense, for example, can be fixedly connected, or can be detachably connected, or can be integrated; can be mechanically connected, or can be electrically connected; can be directly connected, or can be indirectly connected through an intermediate medium, or can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meanings of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0038] In one embodiment of the present application, as shown in Figs. 1-2 A manufacturing process of a waterproof and scratch-resistant re-stickable polymer label is provided, comprising the following steps:

[0039] S100: providing a polycarbonate PC material substrate 20, the polycarbonate PC material substrate 20 having a first surface and a second surface arranged opposite to each other; as shown in Fig. 1 The first surface of the polycarbonate PC material substrate 20 is the lower surface, and the second surface of the polycarbonate PC material substrate 20 is the upper surface.

[0040] S200: screen printing a background color and graphics on the first surface of the polycarbonate PC material substrate 20 to form a reverse printing layer 30; the background color and graphics formed by printing can form the information required by the label.

[0041] S300: screen printing a matte oil on the second surface of the polycarbonate PC material substrate 20 to form a surface printing layer 10; the surface printing layer 10 formed by printing the matte oil can protect the entire label.

[0042] Wherein, the step S200 and the step S300 can be adjusted, the function effect realized is consistent or basically same, all are within the protection scope of the present application.

[0043] S400: providing a double-sided adhesive tape 40 with a release paper 50, and pasting the double-sided adhesive tape 40 with the release paper 50 on the first surface of the polycarbonate PC material substrate 20 to cover the reverse printing layer 30; tearing the release paper 50 can use the double-sided adhesive tape 40 to be adhered to a plane.

[0044] S500: using an automatic die-cutting process to cut off the polycarbonate PC material substrate 20 and the double-sided adhesive tape 40, and not to cut off the release paper 50, thereby forming a waterproof and scratch-resistant re-stickable polymer label product. In this way, the waterproof and scratch-resistant re-stickable polymer label can be mass-produced, the product consistency is high, and the production efficiency is high.

[0045] The waterproof and scratch-resistant reattachable polymer label formed by the manufacturing process of the embodiment of the present application can be widely applied to the outer parts of electronic product casings. By setting the polycarbonate PC material substrate 20, the mechanical strength, high temperature resistance, friction resistance, corrosion resistance, and high toughness of the polycarbonate PC material substrate 20 are utilized. After printing and surface treatment processing, the surface of the polymer label has excellent scratch resistance. A layer of double-sided adhesive tape 40 with release paper 50 is attached to the surface of the polymer label. After the attached polymer label is tested in extreme environments such as high temperature, low temperature, high humidity, and low humidity, the surface of the polymer label has no bubbles, wrinkles, discoloration, and other defects. The polymer label has the advantages of scratch and wear resistance, waterproofness, and reattachability. Further, in the step S100, the first surface of the polycarbonate PC material substrate 20 is a smooth surface, and the second surface of the polycarbonate PC material substrate 20 is a frosted surface. The first surface is designed as a smooth surface to facilitate silk screen printing of the base color and text, and the second surface is designed as a frosted surface to facilitate silk screen printing of matte oil. The frosted surface has very small frosted point structures.

[0046] Further, in the step S300, a 380-mesh silk screen printing screen cloth and a rubber scraper are selected for silk screen printing of matte oil. The use of a 380-mesh silk screen printing screen cloth and a rubber scraper can better achieve printing of matte oil. In addition, environmentally friendly UV ink printing is used, and UV ultraviolet drying is performed. The UV light box body size is 40 cm x 30 cm, the UV ultraviolet energy is 5-10 kw / PCS (total 2 PCS), and the speed is 4-6 m / min. In this way, the printed matte oil has a more uniform thickness, stronger adhesion when attached to the second surface, and a more stable structure of the surface printing layer 10.

[0047] Further, in the step S300, the blade of the scraper used for silk screen printing of matte oil is rectangular, and the blade hardness is 55-65. The scraper with such a structure achieves smoother scraping of the ink and does not damage the UV ink during scraping.

[0048] Further, in the step S300, the matte oil includes the following mass percentages:

[0049] fog oil 60%-80%

[0050] gloss oil 20%-40%.

[0051] For example, the matt oil includes the following mass percentage 60% haze oil + 40% gloss oil, or 70% haze oil + 30% gloss oil, or 80% haze oil + 20% gloss oil, etc. The matching of the matt oil is extremely important, and the matching of the matt oil of the embodiment can directly affect whether the surface of the product can be re-labeled and whether the haze value of the label surface can reach 8±2. After many research tests, the matching makes the haze value reach 8±2. And after the high-molecular label surface is attached to other labels, after the high-temperature and high-humidity cycle test, the label surface has no bubbles, wrinkles, and peeling defects; the test chamber environment is set to humidity: 93+ / 3% RH (temperature 40℃), and the test standard is as follows:

[0052] 1. The temperature is raised to 40℃, and the duration is 2H;

[0053] 2. The temperature is 40℃, and the duration is 6H;

[0054] 3. The relative humidity is raised to 90% RH, and the duration is 4H;

[0055] 4. The temperature is 40℃, and the humidity is 90% RH, and the duration is 72H;

[0056] 5. The humidity is reduced from 90% to 25-30%, and the duration is 4H;

[0057] 6. The humidity is 25-30% RH, and the duration is 2H;

[0058] 7. The temperature is reduced to 25℃, and the duration is 4H.

[0059] Further, in the step S200, a 380-mesh screen printing screen cloth is selected for screen printing the base color, and a rubber squeegee is selected.

[0060] Further, in the step S200, the blade edge of the squeegee selected for screen printing the base color is rectangular, and the blade hardness is 55-65; the blade edge of the squeegee selected for screen printing the base color is rectangular, and the blade hardness is 65-75. Selecting squeegees with different blade hardnesses for screen printing the base color and graphics can make the base color and graphics present different levels of sense and present the information that the label needs to express.

[0061] Further, in the step S400, the double-sided adhesive tape 40 is a double-sided adhesive tape 40 without substrate coated and pressed by acrylic adhesive, and the color of the acrylic adhesive is transparent. Specifically, the thickness of the double-sided adhesive tape 40 pressed by the step is 0.05mm, which is a double-sided adhesive tape 40 without substrate, has excellent adhesive effect, can prevent falling and has excellent waterproof performance. Moreover, it also has good temperature resistance, good dimensional stability, thermal stability and chemical stability, long-term temperature resistance of 80-95℃, and short-term temperature resistance of up to 180-205℃.

[0062] The release paper 50 on the double-sided adhesive tape 40 not only can stick to the double-sided adhesive tape 40, but also can easily separate the two, which is a release paper that can protect the double-sided adhesive tape 40 from pollution.

[0063] Preferably, the color of the release paper 50 of the embodiment is yellow, and the back surface is provided with a factory brand model, and the thickness specification is 0.1mm.

[0064] Another embodiment of the present application provides a waterproof and scratch-resistant re-stickable high molecular label prepared by the above manufacturing process. In the waterproof and scratch-resistant re-stickable high molecular label of the embodiment of the present application, the polycarbonate PC material substrate 20 is provided, which has the properties of mechanical strength, high temperature resistance, friction resistance, corrosion resistance and high toughness. After printing and surface treatment processing, the surface of the high molecular label has excellent scratch resistance. A layer of double-sided adhesive tape 40 with release paper 50 is coated on the surface of the high molecular label, so that after the coated high molecular label is tested in extreme environments such as high temperature, low temperature, high humidity and low humidity, the surface of the high molecular label has no bubbles, wrinkles, discoloration and other defects, has the advantages of scratch resistance, abrasion resistance, waterproofness and re-stickability.

[0065] Further, the thickness of the polycarbonate PC material substrate 20 is between 125μm and 500μm. Specifically, the thickness of the polycarbonate PC material substrate 20 can be 125μm, 150μm, 200μm, 250μm, 300μm, 350μm, 400μm, 450μm or 500μm, etc. The design of the thickness in this range can ensure that the polycarbonate PC material substrate 20 has sufficient strength to bear the back printing layer 30 and the surface printing layer 10; and also will not affect the use effect of the formed label because it is too thin.

[0066] Specifically, the thickness of the surface printing layer 10 can be 8μm, 8.5μm, 9μm, 9.5μm or 10μm, etc. The design of the surface printing layer 10 with this thickness can effectively protect the entire high molecular label, and will not affect its transparency because it is too thick.

[0067] The thickness of the reverse printing layer 30 is between 8 μm and 18 μm. Specifically, the thickness of the reverse printing layer 30 can be 8 μm, 9 μm, 10 μm, 11 μm, 12 μm, 13 μm, 14 μm, 15 μm, 16 μm, 17 μm or 18 μm, etc. By designing the thickness, a clear and bright graphic effect can be formed, and the label information is displayed obviously.

[0068] The thickness of the double-sided adhesive 40 is between 35 μm and 45 μm. Specifically, the thickness of the double-sided adhesive 40 can be 35 μm, 37 μm, 39 μm, 41 μm, 43 μm or 45 μm, etc. The double-sided adhesive 40 with the thickness value has sufficient viscosity to realize the bonding of the macromolecular label.

[0069] The thickness of the release paper 50 is between 80 μm and 150 μm. Specifically, the thickness of the release paper 50 can be 80 μm, 90 μm, 100 μm, 110 μm, 120 μm, 130 μm, 140 μm or 150 μm, etc. The release paper 50 plays a role in protecting the double-sided adhesive 40, avoiding contamination before use.

[0070] The above description is only the preferred embodiment of the present application, and is not intended to limit the present application. Any modification, equivalent replacement and improvement within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A manufacturing process for a waterproof, scratch-resistant, and re-adhesive polymer label, characterized in that: The method comprises the following steps: S100: providing a polycarbonate PC material substrate having a first surface and a second surface arranged oppositely; S200: screen printing a background color and text on the first surface of the polycarbonate PC material substrate to form a reverse printing layer; S300: screen printing a matte oil on the second surface of the polycarbonate PC material substrate to form a surface printing layer; the matte oil comprises the following mass percentages: fog oil 60% to 80%, gloss oil 20% to 40%, The matte oil comprises the following mass percentages: 60% fog oil + 40% gloss oil, or 70% fog oil + 30% gloss oil, or 80% fog oil + 20% gloss oil; The fog oil comprises 1% to 10% 2-hydroxyethyl acrylate, 1% to 10% silicon dioxide, 20% to 30% ester monomer, and 10% to 20% alicyclic monomer; When screen printing the matte oil, a 380-mesh screen printing mesh cloth and a rubber scraper are selected; the blade edge of the scraper is rectangular, and the blade hardness is 55 to 65; The UV curing energy is 5 to 10 kw / PCS, and the speed is 4 to 6 m / min; S400: providing a double-sided adhesive tape with release paper, and attaching the double-sided adhesive tape with release paper on the first surface of the polycarbonate PC material substrate; S500: adopting an automatic die-cutting process to cut off the polycarbonate PC material substrate and the double-sided adhesive tape, and not cutting off the release paper, thereby forming a high polymer label product with a label haze value of 8±2, which is free of falling off, waterproof, scratch-resistant, and can be reattached after being tested at 40°C and 93% RH for 72 hours.

2. The process for making a water-proof, scratch-resistant, re-stickable polymeric label according to claim 1, wherein: In the step S100, the first surface of the polycarbonate PC material substrate is a smooth surface, and the second surface of the polycarbonate PC material substrate is a frosted surface.

3. The process for making a water-proof, scratch-resistant, and re-stickable polymeric label according to claim 1, wherein: In the step S200, a 380-mesh screen printing mesh cloth and a rubber scraper are selected when screen printing the background color; and a 420-mesh screen printing mesh cloth and a rubber scraper are selected when screen printing the text color.

4. The process for making a water-proof, scratch-resistant, and re-stickable polymeric label according to claim 3, wherein: In the step S200, the blade edge of the scraper selected when screen printing the background color is rectangular, and the blade hardness is 55 to 65; the blade edge of the scraper selected when screen printing the background color is rectangular, and the blade hardness is 65 to 75.

5. The process for manufacturing a water-proof and scratch-resistant re-stickable polymeric label according to any one of claims 1 to 4, characterized in that: In the step S400, the double-sided adhesive tape is a substrate-free double-sided adhesive tape formed by coating and pressing a propionic acid adhesive, and the color of the propionic acid adhesive is transparent.

6. A water-proof, scratch-resistant, re-stickable polymeric label, characterized in that: Prepared by the manufacturing process of any one of claims 1 to 4.

7. The water-proof, scratch-resistant, re-stickable polymeric label of claim 6, wherein: The thickness of the polycarbonate PC material substrate is between 125 μm and 500 μm; The thickness of the surface printing layer is between 8 μm and 10 μm; The thickness of the reverse printing layer is between 8 μm and 18 μm; The thickness of the double-sided adhesive tape is between 35 μm and 45 μm; The thickness of the release paper is between 80 μm and 150 μm.

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