Tipping paper with micro-nano optical structure and cigarette

Abstract

According to the tipping paper with the micro-nano optical structure and the cigarette, an optical micro-nano structure layer capable of generating an optically variable image is arranged on the light-seeing side of a tipping paper body, and the optical micro-nano structure layer is fixed to the tipping paper body through an adhesive layer. According to the tipping paper, through the optical micro-nano structure layer, light-variable images can be generated on the tipping paper body, diversified visual effects such as colors, dynamic light and shadow and 3D embossments can be formed, medicines such as pigments and organic solvents do not need to be used, harm to human health can be avoided, and therefore the tipping paper is environmentally friendly and healthy.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of packing paper, especially to a water-based paper with micro-nano optical structure and cigarette. BACKGROUND

[0002] A cigarette with a filter tip has a filter rod at the top end, which is wrapped with a thin layer of orange (also white) wrapping paper, and the upper edge is printed with gold or green lines. This paper is called water-based paper, commonly known as cigarette tip paper. Water-based paper is a special industrial paper used as the outer wrapping of filter cigarette tips. It is named after its appearance, which resembles the grain of pine wood. Water-based paper is in direct contact with the smoker's lips, so the printing ink and coating of water-based paper must be non-toxic, meet food hygiene standards, and have certain water resistance and wet strength. According to the different processing techniques, water-based paper is divided into two categories: printed water-based paper and coated water-based paper. Printed water-based paper is printed using intaglio printing technology, with a beautiful surface and good leveling properties, and is suitable for medium and high-grade cigarettes due to its high technical requirements. Coated water-based paper is processed using coating technology, which is simple in process, and the surface pattern quality and leveling properties are inferior to those of printed water-based paper, so it is often used for low-grade cigarettes.

[0003] Water-based paper is also used as a security feature by some cigarette manufacturers to prevent counterfeiting. In terms of function and use, there has been great development and innovation. Cigarette manufacturers do not limit the use of water-based paper to packaging, and pay more attention to its decorative properties, requiring higher printing aesthetics for water-based paper. Water-based paper has developed from single-color varieties to multi-color products, with the proportion of multi-color products increasing year by year. A large amount of chemicals such as ink, pigment, and organic solvent are used in the printing process, which are harmful to human health. SUMMARY

[0004] The utility model solves the deficiency of prior art and provides a water-based paper with micro-nano optical structure that can produce optical variable images without using pigments, organic solvents, and other chemicals.

[0005] A water-based paper with micro-nano optical structure, comprising a water-based paper body, and an optical micro-nano structure layer capable of producing optical variable images is arranged on the light side of the water-based paper body.

[0006] In this embodiment, the optical micro-nano structure layer is fixed on the water-based paper body by a glue layer.

[0007] In this embodiment, the glue layer is a hot melt glue.

[0008] In this embodiment, the optical micro-nano structure layer includes a grating area with gratings.

[0009] In this embodiment, a coating layer is arranged outside the gratings of the grating area.

[0010] In the embodiment, the grating period of the grating area of the optical micro-nano structure layer is 200 nm to 150 mu m.

[0011] In the embodiment, an ink layer is arranged in the groove enclosed by the interval between the adjacent gratings, the filling depth of the ink layer is less than the groove depth, and a cavity is arranged between the adjacent gratings and the top of the ink layer.

[0012] In the embodiment, the depth of the groove is 50 nm to 5 mu m.

[0013] In the embodiment, an ink layer is arranged in the groove enclosed by the interval between the adjacent gratings, the filling depth of the ink layer is less than the groove depth, and a cavity is arranged between the adjacent gratings and the top of the ink layer, and a coating layer is arranged on the overall outer side formed by the gratings and the ink layer between the adjacent gratings.

[0014] In the embodiment, the grating area comprises at least one first pattern area and at least one second pattern area, the grating period of the first pattern area and the second pattern area is 360 nm to 500 nm, and the difference between the grating periods of the first pattern area and the second pattern area is not less than 50 nm.

[0015] In the embodiment, the coating layer is a metal layer or a transparent dielectric layer.

[0016] In the embodiment, the coating layer comprises a micro-cavity structure forming a color change effect, and the micro-cavity structure comprises, from outside to inside, a semi-transmissive and semi-reflective layer, a spacing layer and a total reflection layer arranged in sequence.

[0017] In the embodiment, the thickness of the semi-transmissive and semi-reflective layer is 5 nm to 30 nm, and the thickness of the spacing layer is 100 nm to 150 nm.

[0018] The utility model also includes a cigarette, including above-mentioned with micro -nano optical structure's water -based pulp.

[0019] Due to the adoption of the above structure, the utility model has the following advantages:

[0020] 1、 the utility model discloses optical micro-nano structure layer is arranged on water -based pulp, thereby through optical micro-nano structure layer can produce light change image on water -based pulp body, forms the diversification visual effect such as color, dynamic light and shade, 3D embossing, therefore, the utility model does not need to use pigment, organic solvent and other medicines, and will not produce harm to human health.

[0021] 2、 the utility model discloses at least one first pattern area and at least one second pattern area in grating area, thereby can be used as the identification of display pattern information, also can be used as anti -fake pattern.

[0022] 3, The utility model discloses ink is filled in the recess between adjacent optical grating, simple and environmental protection, both retain the relief light and shadow effect of optical micro -nano structure layer, more gorgeous color is, and because the filling depth of ink is less than recess depth, make the cavity between adjacent optical grating and ink layer top, thereby prevent the mouth portion and the contact of water pine paper, ink and human body direct contact.

[0023] In conclusion, the utility model discloses a kind of water pine paper of health protection without using pigment, organic solvent and other medicines can produce photochange image. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 It is the partial sectional structure schematic diagram of the utility model embodiment 1.

[0025] Figure 2 It is the schematic diagram after fluorine oil and plating layer are set in non-optical grating area.

[0026] Figure 3 It is Figure 2 The schematic diagram of non-optical grating area after fluorine oil is removed is shown.

[0027] Figure 4 It is the schematic diagram of the optical grating area of the utility model at first visual angle.

[0028] Figure 5 It is the schematic diagram of the optical grating area of the utility model at second visual angle.

[0029] Figure 6 It is the partial sectional structure schematic diagram of the utility model embodiment 2.

[0030] Figure 7 It is the structure schematic diagram of the utility model after setting plating layer on Figure 6 The basis.

[0031] In the drawing, 11, water pine paper body;12, glue layer;13, optical micro -nano structure layer;131, optical grating area;1311, first pattern area;1312, second pattern area;132, non-optical grating area;14, plating layer;15, ink layer;101, recess;21, fluorine oil. DETAILED DESCRIPTION

[0032] The following is by specific embodiment the embodiment of the utility model is explained, and the person skilled in the art can easily understand other advantages and effects of the utility model from the content disclosed in the specification.

[0033] In the following description, reference is made to the accompanying drawings, which illustrate several embodiments of the present invention. It should be understood that other embodiments may also be used, and changes in mechanical composition, structure, electrical and operational aspects may be made without departing from the spirit and scope of the present invention. The following detailed description should not be considered limiting, and the terminology used herein is for describing particular embodiments only and is not intended to limit the present invention.

[0034] Although the terms first, second, etc., are used in some instances to describe various elements herein, these elements should not be limited by these terms. These terms are only used to distinguish one element from another.

[0035] Furthermore, as used herein, the singular forms “a,” “an,” and “the” are intended to include the plural forms as well, unless the context indicates otherwise. It should be further understood that the terms “comprising,” “including,” indicate the presence of a feature, step, operation, element, component, item, kind, and / or group, but do not exclude the presence, occurrence, or addition of one or more other features, steps, operations, elements, components, items, kinds, and / or groups. The terms “or” and “and / or” as used herein are interpreted as inclusive, or mean any one or any combination thereof. Thus, “A, B, or C” or “A, B, and / or C” means “any one of: A; B; C; A and B; A and C; B and C; A, B, and C.” Exceptions to this definition arise only when combinations of elements, functions, steps, or operations are inherently mutually exclusive in some way.

[0036] Example 1:

[0037] like Figure 1 As shown, the cork paper with micro-nano optical structure includes a cork paper body 11, an adhesive layer 12, an optical micro-nano structure layer 13, and a coating layer 14 stacked sequentially. The optical micro-nano structure layer 13 includes a grating region 131 with gratings and a non-grating region 132 without gratings. The grooves formed by the spacing between adjacent gratings have a depth of 50nm to 5μm, such as 1μm, 2μm, 3μm, or 4μm, but are not limited to this. The grating period of the optical micro-nano structure layer 13 is 200nm to 150μm. The coating layer 14 is only disposed on the outer side of the gratings, and after the coating layer 14 is disposed on the outer side of the gratings, there is still a gap between adjacent gratings. The non-grating region 132 is not covered by the coating layer 14.

[0038] The optical micro-nano structure layer 13 of this invention can generate light-changing images, forming diverse visual effects such as color, dynamic light and shadow, 3D relief, and laser. Moreover, it does not require the use of pigments, organic solvents, or other chemicals, and will not harm human health. Therefore, the cork paper with the micro-nano optical structure is environmentally friendly and healthy.

[0039] likeFigure 2 , 3 As shown, the method of setting the coating layer 14 only in the grating area 131 is as follows: Fluorine oil 21 is applied to the anilox roller corresponding to the non-grating area 132, and the fluorine oil 21 is set on the non-grating area 132 by the anilox roller. Then, the coating layer 14 is set on both the grating area 131 and the non-grating area 132. After the fluorine oil 21 evaporates, only the grating area 131 retains the coating layer 14, while the non-grating area 132 has no coating layer 14, thus forming a localized graphic effect. It can also be combined with other printing methods to create richer visual and anti-counterfeiting effects.

[0040] like Figure 4 and Figure 5 As shown, the raster area 131 includes at least one first pattern area 1311 with an invisible watermark effect. The color of the first pattern area 1311 presented under a first viewing angle is different from the color presented under a second viewing angle. In this embodiment, the first pattern area 1311 is circular. The first pattern area 1311 does not show obvious color under a first viewing angle, but shows a bright color, such as light blue, under a second viewing angle. The raster area 131 includes at least one second pattern area 1312. The color of the second pattern area 1312 presented under a first viewing angle is different from the color presented under a second viewing angle. In this embodiment, the second pattern area 1312 is an arrow. The second pattern area 1312 does not show obvious color under a first viewing angle, but shows a bright color, such as dark blue, under a second viewing angle. In this embodiment, the first viewing angle is a viewing angle perpendicular to the first pattern area 1311, i.e., a normal viewing angle, and the second viewing angle is a viewing angle with an angle greater than 75° to the normal of the first pattern area. The grating period range of the first pattern area 1311 and the second pattern area 1312 is 360nm-500nm, and the difference between the grating periods of the first pattern area 1311 and the second pattern area 1312 is not less than 50nm, so that the first pattern area 1311 and the second pattern area 1312 present different colors under the first viewing angle and / or the second viewing angle; therefore, no special light source is required, providing a good anti-counterfeiting means for naked-eye recognition.

[0041] Optionally, the adhesive layer 12 is a hot melt adhesive. The coating layer 14 includes a metal layer or a transparent dielectric layer, and the material of the coating layer 14 is aluminum, chromium, zinc sulfide, or magnesium fluoride. In this embodiment, the thickness of the coating layer 14 is 10 nm to 200 nm. The coating layer 14 includes a microcavity structure that forms a color-changing effect. The microcavity structure includes a semi-transparent and semi-reflective layer, a spacer layer, and a total reflective layer, which are stacked sequentially. The thickness of the semi-transparent and semi-reflective layer is 5 nm to 30 nm. The thickness of the spacer layer is 100 nm to 150 nm.

[0042] Optionally, the optical micro / nano structure layer 13 serves as an identifier for displaying pattern information.

[0043] Optionally, the optical micro / nano structure layer 13 can be an anti-counterfeiting pattern.

[0044] Example 2:

[0045] The difference between this embodiment and Embodiment 1 is that the cork paper with the micro-nano optical structure also includes an ink layer 15. In this embodiment, a coating layer 14 is first set on the outside of the grating, and then the ink layer 15 is filled into the groove 101 between adjacent gratings after coating. The filling depth of the ink layer 15 is less than the depth of the groove 101, so that there is a cavity between the adjacent gratings and the top of the ink layer. This utility model uses ink to directionally fill the groove 101 between adjacent gratings, which is simple and environmentally friendly. It retains the relief light and shadow effect of the optical micro-nano structure layer 13, while the color is more vibrant.

[0046] like Figure 7 As shown, the present invention can also first fill the interval of the grating area with ink layer 15, and then perform coating to form coating layer 14.

[0047] Optionally, the method of setting the ink layer 15 in the grating area 131 is as follows: attach nano ink to the anilox roller corresponding to the grating area 131, and set the nano ink on the grating area 131 by the anilox roller, so that even if the nano ink is filled in the gap, the filling depth of the nano ink is less than the gap depth.

[0048] This utility model also relates to a cigarette stick, comprising the aforementioned cork paper with micro-nano optical structure.

[0049] The above embodiments are merely illustrative of the principles and effects of this utility model and are not intended to limit the scope of this utility model. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of this utility model. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in this utility model should still be covered by the claims of this utility model.

Claims

1. A type of tipping paper with micro / nano optical structures, comprising a tipping paper body, characterized in that, The light-exposed side of the cork paper body is provided with an optical micro-nano structure layer that can generate light-changing images. The optical micro-nano structure layer includes a grating region with a grating formed thereon, and a coating layer is provided in the grating region.

2. The cork paper with micro / nano optical structure according to claim 1, characterized in that, The optical micro / nano structure layer is fixed to the cork paper body by an adhesive layer.

3. The cork paper with micro / nano optical structure according to claim 2, characterized in that, The adhesive layer is a hot melt adhesive.

4. The cork paper with micro / nano optical structure according to claim 1, characterized in that, A coating layer is provided on the outer side of the grating in the grating area.

5. The cork paper with micro / nano optical structure according to claim 1, characterized in that, The grating period of the optical micro / nano structure layer grating region is 200 nm to 150 μm.

6. The cork paper with micro / nano optical structure according to claim 1 or 4, characterized in that, An ink layer is disposed within the groove formed by the spacing between adjacent gratings. The filling depth of the ink layer is less than the depth of the groove, resulting in a cavity between the adjacent gratings and the top of the ink layer.

7. The cork paper with micro / nano optical structure according to claim 6, characterized in that, The depth of the groove is 50 nm to 5 μm.

8. The cork paper with micro / nano optical structure according to claim 6, characterized in that, An ink layer is disposed within the groove formed by the spacing between adjacent gratings. The filling depth of the ink layer is less than the depth of the groove, so that there is a cavity between the adjacent gratings and the top of the ink layer. A coating layer is disposed on the outer side of the grating and the ink layer between adjacent gratings.

9. The cork paper with micro / nano optical structure according to claim 1, characterized in that, The grating region includes at least one first pattern region and at least one second pattern region, the grating period of the first pattern region and the second pattern region is 360nm-500nm, and the difference between the grating periods of the first pattern region and the second pattern region is not less than 50nm.

10. The cork paper with micro / nano optical structure according to claim 1 or 8, characterized in that, The coating layer is a metal layer or a transparent dielectric layer.

11. The cork paper with micro / nano optical structure according to claim 1 or 8, characterized in that, The coating layer includes a microcavity structure that creates a color-changing effect. The microcavity structure includes a semi-transparent and semi-reflective layer, a spacer layer, and a total reflective layer stacked sequentially from the outside to the inside.

12. The cork paper with micro / nano optical structure according to claim 11, characterized in that, The thickness of the semi-transparent and semi-reflective layer is 5nm to 30nm; the thickness of the spacer layer is 100nm to 150nm.

13. A cigarette stick, characterized in that, The cork paper with micro-nano optical structure as described in any one of claims 1 to 12.

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