Soft ceiling with invisible identification

Abstract

The present application relates to the technical field of decorative ceiling, in particular to a soft film ceiling with invisible identification; the design comprises a soft film base body and a fluorescent invisible identification layer arranged on the surface of the soft film base body; the soft film base body is made of a light-transmitting soft film material; the fluorescent invisible identification layer is composed of a fluorescent material and is transparent or has the same color as the soft film base body under natural light or conventional lighting conditions, and does not appear; under the irradiation of a specific excitation light source, the fluorescent material emits fluorescence and appears a preset identification pattern; the identification of the design is completely invisible in the unexcited state and does not destroy the daily decorative effect of the soft film ceiling; when brand information needs to be displayed or anti-counterfeiting verification needs to be performed, the identification can be made to appear through the irradiation of an excitation light source such as ultraviolet light, and the design has the composite functions of decoration and anti-counterfeiting traceability, effectively improving the added value and market competitiveness of the soft film ceiling product.

Description

Technical Field

[0001] This invention relates to the field of decorative ceiling technology, and more particularly to a stretch ceiling with invisible markings. Background Technology

[0002] Stretch ceilings are an interior decoration material that has become widely used in recent years. They are mainly applied in hotels, shopping malls, high-end residential buildings, and various commercial spaces. When combined with lighting systems, they can create unique dynamic and dazzling shapes with strong design themes. Stretch ceilings are made of special polyvinyl chloride material, which is flexible, rich in color, and can achieve complex shapes. They have good light transmittance and can be combined with various lighting systems (such as neon lights, fluorescent lights, and LED lights) to create a dreamlike, shadowless interior lighting effect. They have a fire rating of B1 and excellent dimensional stability.

[0003] However, existing products have the following technical problems: First, visible markings can affect the overall decorative effect of the stretch ceiling when it is not inactive. When the markings are not needed, their presence can interfere with the aesthetics of the design. Second, existing stretch ceiling products do not have anti-counterfeiting identification functions. Consumers' needs for brand traceability and product authentication cannot be effectively met because the products lack concealed means of identification. Third, existing fluorescent anti-counterfeiting technologies are mostly used in paper, packaging, wood flooring, ceramic tiles, and other fields. In the building materials and decoration field, they are more commonly found in wood flooring and ceramic products. Summary of the Invention

[0004] The purpose of this invention is to provide a stretch ceiling with invisible markings, aiming to solve the following problems in the prior art: First, visible markings affect the overall decorative effect of the stretch ceiling in its inactive state, and the presence of the marking pattern interferes with the aesthetics of the design when the markings are not needed; second, existing stretch ceiling products do not have anti-counterfeiting identification functions, and consumers' needs for brand traceability and product authentication are difficult to meet effectively because there are no means of concealed identification; third, existing fluorescent anti-counterfeiting technologies are mostly used in paper, packaging, wood flooring, ceramic tiles and other fields, and are more commonly seen in wood flooring and ceramic products in the building materials and decoration field.

[0005] To achieve the above objectives, the present invention employs a flexible ceiling with invisible markings, comprising a fluorescent invisible marking layer and a flexible substrate body. The fluorescent invisible marking layer is composed of fluorescent material. Under natural light or conventional lighting conditions, the fluorescent invisible marking layer is transparent or the same color as the flexible substrate body and does not appear visible. Under the illumination of a specific excitation light source, it emits fluorescence and displays a preset marking pattern. The flexible substrate body is made of a light-transmitting flexible film material, and the fluorescent invisible marking layer is disposed on the upper or lower surface of the flexible substrate body.

[0006] The fluorescent invisible marking layer may contain one or more combinations of text, graphics, logos, and numerical codes.

[0007] The fluorescent material is an ultraviolet-excited fluorescent material, an infrared-excited fluorescent material, or a visible-light-excited fluorescent material.

[0008] The soft film substrate is a polyvinyl chloride soft film, a light-transmitting soft film, or a white soft film.

[0009] The flexible ceiling with invisible markings also includes a protective layer, which is a transparent protective film layer that covers the fluorescent invisible marking layer.

[0010] The fluorescent invisible marking layer is attached to the upper or lower surface of the soft film substrate by means of ink printing, screen printing, spraying or heat transfer.

[0011] The specific excitation source is an ultraviolet lamp, an LED excitation source, or an infrared detection device.

[0012] This invention discloses a flexible ceiling with invisible markings. In this design, a fluorescent invisible marking layer composed of fluorescent material is provided on the upper or lower surface of the flexible substrate made of a translucent flexible film material. Under natural light or conventional lighting conditions, the fluorescent invisible marking layer is transparent or the same color as the flexible substrate and remains invisible. This solves the technical problems that visible markings affect the overall decorative effect of the flexible substrate in its inactive state, and that the presence of marking patterns interferes with the aesthetic design when markings are not needed. Simultaneously, under illumination by a specific excitation light source, the fluorescent invisible marking layer emits fluorescence, revealing a preset marking pattern including one or more combinations of text, graphics, logos, and numerical codes. The fluorescent material is selected from ultraviolet-excited fluorescent materials, infrared-excited fluorescent materials, or visible light-excited fluorescent materials. The specific excitation light source is an ultraviolet lamp or an infrared lamp. The invention utilizes an ED excitation light source or infrared detection device to solve the technical problems of existing stretch ceiling products lacking anti-counterfeiting identification functions and consumers' brand traceability and product authentication needs being difficult to effectively meet due to the lack of concealed identification methods. Furthermore, by attaching the fluorescent invisible label layer to the upper or lower surface of the stretch ceiling substrate using ink printing, screen printing, spraying, or heat transfer, and covering the fluorescent invisible label layer with a transparent protective film layer to provide wear resistance, waterproofing, and anti-aging properties, the invention applies fluorescent invisible labeling technology for the first time to the stretch ceiling substrate, a flexible, translucent decorative material made of PVC stretch film, translucent film, or white film. This solves the technical problem that existing fluorescent anti-counterfeiting technologies are mostly used in paper, packaging, wood flooring, and ceramic tiles, and in the building materials and decoration field, are mostly found in wood flooring and ceramic products, but have not yet been combined with stretch ceilings. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0014] Figure 1 This is a schematic diagram of the structure of the stretch ceiling with invisible markings of the present invention.

[0015] In the figure: 1- Soft film substrate, 2- Fluorescent invisible marking layer, 3- Protective layer. Detailed Implementation

[0016] Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0017] Please see Figure 1 This invention provides a flexible ceiling with invisible markings, comprising a fluorescent invisible marking layer 2 and a flexible substrate body 1. The fluorescent invisible marking layer 2 is made of fluorescent material. Under natural light or conventional lighting conditions, the fluorescent invisible marking layer 2 is transparent or the same color as the flexible substrate body 1 and does not show up. Under the illumination of a specific excitation light source, it emits fluorescence and shows a preset marking pattern. The flexible substrate body 1 is made of light-transmitting flexible film material, and the fluorescent invisible marking layer 2 is disposed on the upper or lower surface of the flexible substrate body 1.

[0018] In this embodiment, the fluorescent invisible label layer 2 is transparent or the same color as the main body 1 of the stretch film substrate under natural light or conventional lighting conditions, so as not to affect the daily decorative effect of the stretch film ceiling. At the same time, under the illumination of the specific excitation light source, the fluorescent invisible label layer 2 emits fluorescence to show the preset label pattern, realizing the combined function of brand display and anti-counterfeiting traceability.

[0019] In this embodiment, after the fluorescent material absorbs the energy of the specific excitation light source, its electrons transition to the excited state and then release visible fluorescence when it returns to the ground state. When there is no excitation light source, the fluorescent material does not emit light and is transparent or the same color as the soft film substrate 1, so it is invisible to the naked eye.

[0020] In this embodiment, the soft film substrate 1 is made of commercially available polyvinyl chloride soft film material such as the French CLIPSO series or the German DESCOR series soft film, with a thickness typically of 0.18-0.25 mm. The fluorescent material is an ultraviolet-excited fluorescent material such as zinc sulfide phosphor or rare earth phosphor (such as europium phosphor). In the prior art, the phosphor is widely used in the fields of anti-counterfeiting inks and fluorescent coatings. The ultraviolet lamp in the specific excitation light source is a commercially available 365nm or 395nm ultraviolet LED bead. The infrared detection device is a commercially available near-infrared CCD camera with an infrared excitation light source. The LED excitation light source is a commercially available tunable wavelength LED light source module.

[0021] Furthermore, the marking pattern of the fluorescent invisible marking layer 2 is one or more combinations of text, graphics, logo, and numerical code.

[0022] In this embodiment, the identification pattern can be flexibly set as one or more combinations of text, graphics, logo, and numerical code to meet the customized anti-counterfeiting needs of different brands, and multiple pattern combinations can achieve multiple anti-counterfeiting effects to improve security.

[0023] In this embodiment, the fluorescent invisible marking layer 2 attaches different patterns to the surface of the soft film substrate 1 at preset positions and proportions through ink printing, screen printing, spraying or heat transfer. The fluorescent materials in each pattern area are simultaneously or separately displayed under an excitation light source, forming marking information that can be identified by the naked eye or read by a machine.

[0024] In this embodiment, the text pattern can use a conventional vector font, the graphics and logo are brand-customized vector graphics, and the digital code can be a serial number or a QR code. The above pattern design method is a conventional operation in existing screen printing and heat transfer technologies, and the fluorescent material itself is the core functional component for realizing the pattern display.

[0025] Furthermore, the fluorescent material is an ultraviolet-excited fluorescent material, an infrared-excited fluorescent material, or a visible-light-excited fluorescent material.

[0026] In this embodiment, by selecting three different types of fluorescent materials—ultraviolet excitation, infrared excitation, or visible light excitation—the flexible ceiling can adapt to the needs of different security levels and application scenarios. Ultraviolet excitation is suitable for conventional anti-counterfeiting, infrared excitation is suitable for high-concealment scenarios, and visible light excitation is suitable for special interactive displays.

[0027] In this embodiment, the ultraviolet-excited fluorescent material absorbs ultraviolet light energy of about 365nm and then emits visible fluorescence of 400-500nm. The infrared-excited fluorescent material absorbs near-infrared light of 700-900nm and then emits visible light or near-infrared fluorescence, which needs to be read in conjunction with an infrared camera. The visible light-excited fluorescent material absorbs specific visible light bands and then emits different colors of fluorescence to achieve multicolor display.

[0028] In this embodiment, the ultraviolet-excited fluorescent material is a commercially available zinc sulfide copper-doped phosphor or an organic fluorescent dye such as a rhodamine B derivative; the infrared-excited fluorescent material is a commercially available rare-earth upconversion phosphor such as NaYF4:Yb,Er; and the visible-light-excited fluorescent material is a commercially available quantum dot fluorescent material or a visible-light-responsive organic fluorescent dye. All three fluorescent materials and their corresponding excitation sources are commercially available and mature in existing anti-counterfeiting technologies. The ultraviolet lamp is a commercially available 365nm ultraviolet LED from Nichia or Seoul Viosys; the infrared detection device is a commercially available FLIR or Hikvision near-infrared camera; and the visible-light excitation source is a commercially available multi-wavelength tunable LED module.

[0029] Furthermore, the soft film substrate 1 is a polyvinyl chloride soft film, a light-transmitting soft film, or a white soft film.

[0030] In this embodiment, the soft film substrate 1 is made of polyvinyl chloride soft film, light-transmitting soft film or white soft film, so that the soft film ceiling retains the excellent characteristics of soft film material such as flexibility, light transmission and shapeability, and ensures the light transmission and display effect of the fluorescent invisible marking layer 2 in the excited state.

[0031] In this embodiment, the polyvinyl chloride (PVC) soft film has good light transmittance and flexibility, with a light transmittance typically between 30% and 70%. The fluorescence emitted by the fluorescent invisible label layer 2 can be seen by the observer through the PVC soft film. The white soft film, due to its white background, allows the fluorescent invisible label layer 2 to blend seamlessly with the background color when not excited, making it more concealed. The light-transmitting soft film further enhances the fluorescence transmittance, making the label brighter and clearer after excitation.

[0032] In this embodiment, the polyvinyl chloride (PVC) stretch film is the commercially available French CLIPSO P95 series or German DESCOR 702 series, the light-transmitting stretch film is the commercially available Chinese Jugao light-transmitting film series, and the white stretch film is a commercially available conventional B1-grade flame-retardant PVC white stretch film. The thickness of all of them is 0.18-0.25mm. The stretch film itself serves as a structural load-bearing component, playing a physical role in supporting and transmitting light.

[0033] Furthermore, the stretch ceiling with invisible markings also includes a protective layer 3, which is a transparent protective film layer, and the protective layer 3 covers the fluorescent invisible marking layer 2.

[0034] In this embodiment, the protective layer 3 covers the fluorescent invisible label layer 2, which plays a role in wear resistance, water resistance and anti-aging, effectively extending the service life of the fluorescent invisible label layer 2, maintaining the long-term clarity of the label in the excited state, and at the same time not affecting the excitation and display effect of the fluorescent invisible label layer 2.

[0035] In this embodiment, the transparent protective film layer is coated with a UV-curable transparent coating on the surface of the fluorescent invisible label layer 2, with a thickness of 5-20 micrometers. The UV-curable coating rapidly cross-links and cures under ultraviolet light to form a dense transparent film, which not only isolates the fluorescent invisible label layer 2 from direct erosion by external friction, moisture and ultraviolet light, but also does not hinder the specific excitation light source from penetrating to the fluorescent invisible label layer 2 and the fluorescence emitted by the fluorescent invisible label layer 2 from penetrating to the observer due to its transparent properties.

[0036] In this embodiment, the UV-curable transparent coating used in the protective layer 3 is the commercially available Dongfeng Chemical UV-9000 series or Jiahe Chemical UV varnish series. The transparent protective film layer can also be covered by commercially available PET or TPU transparent film through hot pressing. The above coating and film materials are all mature commercially available products in the existing coating and film bonding technologies.

[0037] Furthermore, the fluorescent invisible marking layer 2 is attached to the upper or lower surface of the soft film substrate body 1 by means of ink printing, screen printing, spraying or heat transfer.

[0038] In this embodiment, the fluorescent invisible marking layer 2 can be attached to the surface of the soft film substrate 1 by four methods: ink printing, screen printing, spraying or heat transfer, providing a flexible manufacturing process selection to adapt to different production volume, precision and cost requirements.

[0039] In this embodiment, the ink printing method uses a doctor blade or roller to transfer the fluorescent ink to the surface of the flexible film substrate 1; the screen printing method uses a screen to squeeze the fluorescent ink through the mesh and print it onto the surface of the flexible film substrate 1; the spraying method uses a spray gun to atomize and spray the fluorescent coating onto the surface of the flexible film substrate 1; and the heat transfer method uses heat and pressure to transfer the fluorescent pattern on the transfer film to the surface of the flexible film substrate 1. All four methods can achieve a firm bond between the fluorescent invisible marking layer 2 and the flexible film substrate 1.

[0040] In this embodiment, the screen printing equipment is a commercially available SERIC or DEK brand screen printing machine, the spraying equipment is a commercially available Graco or IWATA brand automatic spray gun, and the heat transfer equipment is a commercially available Stahls' or Hotronix brand heat transfer machine.

[0041] Furthermore, the specific excitation source is an ultraviolet lamp, an LED excitation source, or an infrared detection device.

[0042] In this embodiment, the specific excitation light source is selected from ultraviolet lamps, LED excitation light sources or infrared detection devices, providing a variety of light source solutions for the excitation and display of the fluorescent invisible marking layer 2, which can be flexibly selected according to the convenience and concealment requirements of the usage scenario.

[0043] In this embodiment, the ultraviolet lamp emits 365nm or 395nm ultraviolet light to irradiate the surface of the flexible ceiling film. After the fluorescent material in the fluorescent invisible label layer 2 absorbs the ultraviolet light energy, electrons transition from the ground state to the excited state. Subsequently, they return to the ground state via radiative transition and release visible fluorescence with a longer wavelength. The LED excitation light source can emit visible light or near-infrared light of a specific wavelength to excite the corresponding fluorescent material. The infrared detection device actively emits near-infrared light and receives the upconversion fluorescence signal emitted by the fluorescent invisible label layer 2 through an infrared camera to form a visible image.

[0044] In this embodiment, the ultraviolet lamp is a commercially available Nichia NVSU233A series 365nm ultraviolet LED bead or a Philips TUV ultraviolet lamp tube, the LED excitation light source is a commercially available Lumileds Luxeon series multi-wavelength LED module, and the infrared detection device is a commercially available FLIR Boson series or Hikvision Microfilm infrared thermal imaging camera with an 850nm or 940nm infrared LED supplementary light.

[0045] In this invention, four embodiments are also provided as follows: Example 1:

[0046] This embodiment provides a flexible ceiling with fluorescent invisible markings, including a flexible substrate body 1 and a fluorescent invisible marking layer 2 disposed on the upper surface of the flexible substrate body 1. The flexible substrate body 1 is a white polyvinyl chloride flexible film with a thickness of 0.18-0.25mm. The fluorescent invisible marking layer 2 uses ultraviolet-excited fluorescent ink, and a preset logo pattern is printed on the upper surface of the flexible substrate body 1 through a screen printing process. Under natural light or normal indoor lighting conditions, the logo pattern is transparent and invisible to the naked eye. Under 365nm ultraviolet light irradiation, the logo pattern emits bright fluorescence and is clearly visible. After the flexible ceiling is installed in the ceiling structure, it presents a conventional white flexible film decorative effect when there is no ultraviolet excitation. When it is necessary to display the logo or perform anti-counterfeiting verification, it can be revealed by irradiation with ultraviolet light.

[0047] Example 2:

[0048] The difference between this embodiment and Embodiment 1 is that the fluorescent invisible marking layer 2 is disposed on the lower surface of the soft film substrate body 1. When the ultraviolet excitation light source is irradiated from above the soft film, the marking pattern is revealed through the soft film substrate body 1. In this embodiment, the fluorescent invisible marking layer 2 is located below the soft film substrate body 1 and is directly protected by the soft film substrate body 1, making it less susceptible to friction and external force damage.

[0049] Example 3:

[0050] The difference between this embodiment and Embodiment 1 is that the surface of the fluorescent invisible label layer 2 is further provided with a protective layer 3, which is a UV-cured transparent coating layer covering the fluorescent invisible label layer 2; the thickness of the protective layer 3 is 5-20 micrometers, and it has good wear resistance, water resistance and UV aging resistance, which can effectively extend the service life of the fluorescent invisible label layer 2 and maintain the clarity of the label in the excited state.

[0051] Example 4:

[0052] The difference between this embodiment and Embodiment 1 is that: the soft film substrate 1 is a light-transmitting soft film, and the fluorescent material is a near-infrared excited fluorescent material; the marking is completely invisible under natural light, but when illuminated by a near-infrared detection device, it presents a clear marking pattern in an infrared camera; this embodiment is suitable for high-end places and special scenarios that require extremely high concealment.

[0053] The above description discloses only one preferred embodiment of the present invention, and should not be construed as limiting the scope of the present invention. Those skilled in the art will understand that all or part of the processes of the above embodiments can be implemented, and equivalent changes made in accordance with the claims of the present invention are still within the scope of the invention.

Claims

1. A stretch ceiling with invisible markings, characterized in that, The device includes a fluorescent invisible label layer and a soft film substrate. The fluorescent invisible label layer is made of fluorescent material. Under natural light or conventional lighting conditions, the fluorescent invisible label layer is transparent or the same color as the soft film substrate and does not show up. Under the illumination of a specific excitation light source, it emits fluorescence and shows a preset label pattern. The soft film substrate is made of light-transmitting soft film material. The fluorescent invisible label layer is disposed on the upper or lower surface of the soft film substrate.

2. The stretch ceiling with invisible markings as described in claim 1, characterized in that, The fluorescent invisible identification layer has an identification pattern that is one or more combinations of text, graphics, logo, and numerical codes.

3. The stretch ceiling with invisible markings as described in claim 2, characterized in that, The fluorescent material is an ultraviolet-excited fluorescent material, an infrared-excited fluorescent material, or a visible-light-excited fluorescent material.

4. The stretch ceiling with invisible markings as described in claim 3, characterized in that, The substrate of the soft film is a polyvinyl chloride soft film, a light-transmitting soft film, or a white soft film.

5. The stretch ceiling with invisible markings as described in claim 4, characterized in that, The stretch ceiling with invisible markings also includes a protective layer, which is a transparent protective film layer, covering the fluorescent invisible marking layer.

6. The stretch ceiling with invisible markings as described in claim 5, characterized in that, The fluorescent invisible marking layer is attached to the upper or lower surface of the soft film substrate by means of ink printing, screen printing, spraying or heat transfer.

7. The stretch ceiling with invisible markings as described in claim 6, characterized in that, The specific excitation source is an ultraviolet lamp, an LED excitation source, or an infrared detection device.

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