Anti-adhesion printing paper for digital printing
By introducing a multi-layer structure and specific materials into digital printing paper, the problems of complex and costly anti-blocking in existing technologies have been solved, achieving efficient anti-blocking and precise delivery, and improving printing quality.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- DANYANG JINGYI PRINTING CO LTD
- Filing Date
- 2025-06-07
- Publication Date
- 2026-05-05
AI Technical Summary
Existing digital printing paper suffers from problems such as complex external processing, high cost, and impact on ink adhesion in terms of preventing sticking.
The printing paper uses a multi-layer structure, including a base paper layer, an absorbent auxiliary layer, an antistatic layer, an anti-sticking functional layer, and a barrier layer. Tear lines and positioning holes are formed by laser cutting, and combined with hydrophilic materials and anti-sticking particles, it achieves rapid ink adhesion and double-sided anti-sticking effect.
It improves the mechanical strength and printing load capacity of printing paper, reduces the risk of adhesion, ensures accurate paper feeding and alignment, and reduces the offset of printed images and text to less than 0.5mm, thereby improving printing efficiency and quality.
Smart Images
Figure CN224199721U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of printing paper technology, and in particular relates to an anti-sticking printing paper for digital printing. Background Technology
[0002] Digital printing relies on digital technology and has the advantages of high-efficiency production. It can achieve short-run printing and on-demand customization, significantly shortening the delivery cycle. Its flexibility is reflected in its support for personalized design, variable data printing and multi-media adaptation.
[0003] Most printing papers have several drawbacks in use, such as existing anti-blocking methods relying on external processing techniques. For example, spraying anti-blocking powder requires additional steps and can easily contaminate the printed surface, while applying release agents increases costs and may affect ink adhesion. Therefore, we propose an anti-blocking printing paper for digital printing. Utility Model Content
[0004] The purpose of this invention is to provide an anti-blocking printing paper for digital printing, so as to solve the problems mentioned in the background art.
[0005] In view of this, the present invention provides an anti-blocking printing paper for digital printing, comprising:
[0006] The base paper layer has an absorbent auxiliary layer on top, an antistatic layer inside, an anti-sticking functional layer on top of the absorbent auxiliary layer, a barrier layer at the bottom, and tear lines and positioning holes on the edges.
[0007] In this technical solution, the base paper layer serves as the main support layer, made of plant fibers such as wood pulp and bamboo pulp, with a thickness of 80-150μm. It provides mechanical strength and printing load-bearing capacity. The fiber raw materials are formed into a porous network structure through pulping and papermaking processes, ensuring ink penetration and coating adhesion. The water-absorbing auxiliary layer uses hydrophilic materials such as starch and modified cellulose to form a porous coating with a thickness of 3-10μm. The interconnected pore structure inside the coating can quickly absorb moisture from the digital printing ink, accelerate ink fixation, and reduce the risk of adhesion caused by moisture residue. The antistatic layer can reduce surface resistivity and avoid excessive paper adhesion caused by electrostatic adsorption. The anti-adhesion functional layer forms a continuous film layer to ensure stable adhesion of anti-adhesion particles. The barrier layer not only prevents ink from the front side from penetrating to the back side but also improves the smoothness of the back side. Together with the front anti-adhesion functional layer, it achieves a double-sided anti-adhesion effect. The tear line is formed by laser cutting. When tearing, it breaks along the hole line with neat edges and no burrs. The positioning hole matches the positioning pin of the digital printing equipment to ensure accurate alignment during paper feeding, with a printing image offset of ≤0.5mm.
[0008] In the above technical solution, further, the tear line is a semi-cut dotted hole array, the hole diameter of the tear line is 0.3-0.5mm, and the hole spacing of the tear line is 1-2mm.
[0009] In this technical solution, the tear line is formed by laser cutting process, and it breaks along the hole line when torn, with neat edges and no burrs.
[0010] In the above technical solution, the positioning hole is circular and the diameter of the positioning hole is 1-2 mm.
[0011] In this technical solution, the positioning hole matches the positioning pin of the digital printing equipment to ensure accurate alignment during paper feeding, with the offset of printed text and images ≤0.5mm.
[0012] In the above technical solution, the water-absorbing auxiliary layer uses a modified cellulose coating, and the thickness of the water-absorbing auxiliary layer is 3-10 μm.
[0013] In this technical solution, the water-absorbing auxiliary layer uses hydrophilic materials such as starch and modified cellulose to form a porous coating with a thickness of 3-10μm. The interconnected pore structure inside the coating can quickly absorb moisture from the digital printing ink, accelerate ink curing, and reduce the risk of adhesion caused by moisture residue.
[0014] In the above technical solution, the antistatic layer further uses a quaternary ammonium salt compound.
[0015] In this technical solution, the antistatic layer can reduce the surface resistivity and prevent the paper from sticking too tightly due to electrostatic adsorption.
[0016] In the above technical solution, the anti-adhesion functional layer further includes an adhesive and anti-adhesion particles, and the thickness of the adhesive is 5-20μm.
[0017] In this technical solution, the anti-adhesion functional layer forms a continuous film layer to ensure stable adhesion of the anti-adhesion particles.
[0018] In the above technical solution, the barrier layer is further described as a polyvinyl alcohol coating or a polyacrylate waterproof coating, and the thickness of the barrier layer is 5-15 μm.
[0019] In this technical solution, the barrier layer not only prevents the ink on the front side from penetrating to the back side, but also improves the smoothness of the back side, achieving a double-sided anti-stick effect in conjunction with the anti-stick functional layer on the front side.
[0020] The beneficial effects of this utility model are:
[0021] 1. This anti-blocking printing paper for digital printing has a base paper layer as the main support layer, made of plant fibers such as wood pulp and bamboo pulp, with a thickness of 80-150μm, providing mechanical strength and printing load-bearing capacity. The fiber raw materials are formed into a porous network structure through pulping and papermaking processes to ensure ink penetration and coating adhesion. The water-absorbing auxiliary layer uses hydrophilic materials such as starch and modified cellulose to form a porous coating with a thickness of 3-10μm. The interconnected pore structure inside the coating can quickly absorb moisture from digital printing ink, accelerate ink fixation, and reduce the risk of sticking due to moisture residue. The antistatic layer can reduce surface resistivity and avoid excessive paper adhesion caused by electrostatic adsorption. The anti-blocking functional layer forms a continuous film layer to ensure stable adhesion of anti-blocking particles. The barrier layer not only prevents ink from the front side from penetrating to the back side, but also improves the smoothness of the back side, achieving a double-sided anti-blocking effect in conjunction with the front anti-blocking functional layer.
[0022] 2. The anti-sticking printing paper used for digital printing has a tear line formed by laser cutting. When torn, it breaks along the hole line with a neat edge and no burrs. The positioning hole matches the positioning pin of the digital printing equipment to ensure accurate alignment during paper feeding and the offset of printed text and images is ≤0.5mm. Attached Figure Description
[0023] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0024] Figure 2 This is a schematic diagram of the basic paper layer area structure of this utility model.
[0025] The markings in the diagram are as follows:
[0026] 1. Base paper layer; 2. Absorbent auxiliary layer; 3. Antistatic layer; 4. Anti-sticking functional layer; 5. Barrier layer; 6. Tear line; 7. Positioning hole. Detailed Implementation
[0027] The technical solutions of the embodiments of this application will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application are within the scope of protection of this application.
[0028] In the description of this application, it should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. For ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items, and therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.
[0029] It should be noted that the terms "first," "second," etc., used in the specification and claims of this application are used to distinguish similar objects and not to describe a specific order or sequence. It should be understood that such use of data can be interchanged where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first," "second," etc., are generally of the same class and are not limited in number; for example, a first object can be one or more. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.
[0030] It should be noted that in the description of this application, the directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this application. The directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.
[0031] It should be noted that, in this application, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element. Furthermore, it should be noted that the scope of the methods and apparatuses in the embodiments of this application is not limited to performing functions in the order shown or discussed, but may also include performing functions substantially simultaneously or in the reverse order, depending on the functions involved. For example, the described methods may be performed in a different order than described, and various steps may be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples. Example
[0032] Please see Figure 1 - Figure 2 As shown, this embodiment provides an anti-blocking printing paper for digital printing, comprising:
[0033] The base paper layer 1 has an absorbent auxiliary layer 2 on top, an antistatic layer 3 inside, an anti-adhesion functional layer 4 on top of the absorbent auxiliary layer 2, a barrier layer 5 at the bottom, and tear lines 6 and positioning holes 7 on the edge of the base paper layer 1.
[0034] The base paper layer 1, serving as the main support layer, is made of plant fibers such as wood pulp and bamboo pulp, with a thickness of 80-150μm. It provides mechanical strength and printing load-bearing capacity. The fiber raw materials undergo pulping and papermaking processes to form a porous network structure, ensuring ink penetration and coating adhesion. The absorbent auxiliary layer 2 uses hydrophilic materials such as starch and modified cellulose to form a porous coating with a thickness of 3-10μm. The interconnected pore structure within the coating can quickly absorb moisture from digital printing inks, accelerating ink adhesion and reducing the risk of sticking due to moisture residue. The electrostatic layer 3 reduces surface resistivity and prevents paper from sticking too tightly due to electrostatic adsorption. The anti-sticking functional layer 4 forms a continuous film layer to ensure stable adhesion of the anti-sticking particles. The barrier layer 5 prevents ink from penetrating from the front to the back and improves the smoothness of the back. Together with the front anti-sticking functional layer, it achieves a double-sided anti-sticking effect. The tear line 6 is formed by laser cutting. When torn, it breaks along the hole line with neat edges and no burrs. The positioning hole 7 matches the positioning pin of the digital printing equipment to ensure accurate alignment when the paper is fed. The offset of the printed image is ≤0.5mm. Example
[0035] This embodiment provides an anti-blocking printing paper for digital printing, which, in addition to the technical solutions of the above embodiments, also has the following technical features.
[0036] In this embodiment, the tear line 6 is a semi-cut dotted hole array, the hole diameter of the tear line 6 is 0.3-0.5mm, and the hole spacing of the tear line 6 is 1-2mm.
[0037] Among them, the tear line 6 is formed by laser cutting process. When it is torn off, it breaks along the hole line and the edge is neat and without burrs. Example
[0038] This embodiment provides an anti-blocking printing paper for digital printing, which, in addition to the technical solutions of the above embodiments, also has the following technical features.
[0039] In this embodiment, the positioning hole 7 is circular, and the diameter of the positioning hole 7 is 1-2 mm.
[0040] The positioning hole 7 matches the positioning pin of the digital printing equipment to ensure accurate alignment during paper feeding, with a printed image offset of ≤0.5mm. Example
[0041] This embodiment provides an anti-blocking printing paper for digital printing, which, in addition to the technical solutions of the above embodiments, also has the following technical features.
[0042] In this embodiment, the water-absorbing auxiliary layer 2 uses a modified cellulose coating, and the thickness of the water-absorbing auxiliary layer 2 is 3-10 μm.
[0043] The water-absorbing auxiliary layer 2 uses hydrophilic materials such as starch and modified cellulose to form a porous coating with a thickness of 3-10μm. The interconnected pore structure inside the coating can quickly absorb moisture from the digital printing ink, accelerate ink curing, and reduce the risk of adhesion caused by moisture residue. Example
[0044] This embodiment provides an anti-blocking printing paper for digital printing, which, in addition to the technical solutions of the above embodiments, also has the following technical features.
[0045] In this embodiment, the antistatic layer 3 uses a quaternary ammonium salt compound.
[0046] Among them, the antistatic layer 3 can reduce the surface resistivity and avoid the paper from sticking too tightly due to electrostatic adsorption. Example
[0047] This embodiment provides an anti-blocking printing paper for digital printing, which, in addition to the technical solutions of the above embodiments, also has the following technical features.
[0048] In this embodiment, the anti-adhesion functional layer 4 includes an adhesive and anti-adhesion particles, and the thickness of the adhesive is 5-20 μm.
[0049] Among them, the anti-adhesion functional layer 4 forms a continuous film layer to ensure stable adhesion of the anti-adhesion particles. Example
[0050] This embodiment provides an anti-blocking printing paper for digital printing, which, in addition to the technical solutions of the above embodiments, also has the following technical features.
[0051] In this embodiment, the barrier layer 5 is a polyvinyl alcohol coating or a polyacrylate waterproof coating, and the thickness of the barrier layer 5 is 5-15 μm.
[0052] Among them, the barrier layer 5 not only prevents the ink on the front side from penetrating to the back side, but also improves the smoothness of the back side, and together with the anti-sticking functional layer on the front side, it achieves a double-sided anti-sticking effect.
[0053] The embodiments of this application have been described above with reference to the accompanying drawings. Unless otherwise specified, the embodiments and features in the embodiments of this application can be combined with each other. This application is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of this application without departing from the spirit and scope of the claims, and all of these forms are within the protection scope of this application.
Claims
1. An anti-blocking printing paper for digital printing, characterized in that, include: The base paper layer (1) has a water-absorbing auxiliary layer (2) on top, an antistatic layer (3) inside the base paper layer (1), an anti-adhesion functional layer (4) on top of the water-absorbing auxiliary layer (2), a barrier layer (5) at the bottom of the base paper layer (1), and tear lines (6) and positioning holes (7) on the edge of the base paper layer (1).
2. The anti-blocking printing paper for digital printing according to claim 1, characterized in that, The tear line (6) is a semi-cut dashed hole array, the hole diameter of the tear line (6) is 0.3-0.5mm, and the hole spacing of the tear line (6) is 1-2mm.
3. The anti-blocking printing paper for digital printing according to claim 1, characterized in that, The positioning hole (7) is circular and the diameter of the positioning hole (7) is 1-2 mm.
4. The anti-blocking printing paper for digital printing according to claim 1, characterized in that, The water-absorbing auxiliary layer (2) uses a modified cellulose coating and has a thickness of 3-10 μm.
5. The anti-blocking printing paper for digital printing according to claim 1, characterized in that, The antistatic layer (3) uses quaternary ammonium salt compounds.
6. The anti-blocking printing paper for digital printing according to claim 1, characterized in that, The anti-adhesion functional layer (4) includes an adhesive and anti-adhesion particles, wherein the thickness of the adhesive is 5-20 μm.
7. The anti-blocking printing paper for digital printing according to claim 1, characterized in that, The barrier layer (5) is a polyvinyl alcohol coating or a polyacrylate waterproof coating, and the thickness of the barrier layer (5) is 5-15 μm.