Environment-friendly hydrophilic digital printing lettering film

Abstract

The utility model is suitable for the technical field of digital printing materials, and provides an environment-friendly hydrophilic digital printing lettering film which comprises a digital printing lettering film body wound on a reel pipe, and the digital printing lettering film body comprises a base layer. The glue layer is arranged on the base layer; the functional layer is arranged on the glue layer; and the printing layer is arranged on the functional layer. According to the environment-friendly hydrophilic digital printing lettering film provided by the scheme, the problem that an existing digital printing lettering film is not environmentally friendly is solved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to digital printing material technical field, especially relate to a kind of environment-friendly hydrophilic digital printing lettering film. BACKGROUND

[0002] In modern printing and decoration industry, digital printing technology gradually becomes the mainstream of market with its high precision, high efficiency and diversified pattern performance capability, especially lettering film technology, because it can realize individualization, customization pattern and text transfer on the surface of various materials, and is widely used in clothing, leather products, plastic products, electronic product shell and other fields.

[0003] However, the common structure of traditional digital printing lettering film includes plastic layer, ink absorption layer is provided on the plastic layer, and the two are connected by adhesive layer, from the environmental protection point of view, the plastic layer usually adopts conventional plastic material which is not degradable, which has hidden environmental hazards at the production source. INVENTION CONTENTS

[0004] The utility model provides a kind of environment-friendly hydrophilic digital printing lettering film, to solve the problem of current digital printing lettering film not environmental protection.

[0005] The utility model is realized as follows, a kind of environment-friendly hydrophilic digital printing lettering film, comprising: digital printing lettering film main body is rolled on the pipe, the digital printing lettering film main body includes base layer;Glue layer is arranged on the base layer, functional layer on the glue layer;Print layer is arranged on the functional layer.

[0006] Preferably, the base layer is degradable environment-friendly polyester material, and the glue layer is water-based polyurethane glue.

[0007] Preferably, the functional layer is mixed by hydrophilic nanoparticles and water-based resin.

[0008] Preferably, the side of the digital printing lettering film main body is provided with a side plate, and a guide groove is formed in the side plate.

[0009] Preferably, a plurality of easy-to-tear holes are longitudinally arranged at equal intervals on the digital printing lettering film main body, and an easy-to-tear notch is symmetrically formed on the digital printing lettering film main body.

[0010] Preferably, the inner wall of the guide groove is coated with a low-friction coating made of fluorocarbon polymer material.

[0011] Preferably, the surface of the print layer is further provided with an antistatic coating made of conductive polymer material.

[0012] Compared with the related art, the environment-friendly hydrophilic digital printing lettering film provided by the utility model has the following beneficial effects:

[0013] The digital printing lettering film body is rolled on the roll pipe, facilitating storage, transportation and taking, the roll pipe protects the lettering film from physical damage, ensures integrity, facilitates subsequent processing and reduces waste rate; the base layer adopts degradable environment-friendly polyester material, in terms of environmental protection, can be naturally degraded after being discarded, avoids "white pollution" and restores soil air permeability and water permeability within several months to several years; in terms of performance, the flexibility is good, the processing action is adapted, the mechanical strength is reliable and the pattern accurate presentation is ensured; in terms of adhesive layer, water-based polyurethane adhesive is selected, in terms of environmental protection, almost no harmful volatile organic compounds are released during production, use and storage, and the application scenarios are wide; in terms of bonding effect, the base layer and the functional layer are tightly bonded, stable adhesion is achieved under different temperature and humidity, the structure stability is ensured, and the reliability and durability are improved; in terms of the functional layer, the hydrophilic nano particles and the water-based resin are mixed, in terms of hydrophilicity, the ink quickly penetrates and uniformly diffuses, the adhesion effect is improved, the printing quality is improved and the waste rate is reduced; in terms of environmental protection, the water-based resin has no pollution in the whole life cycle and is suitable for strict environmental protection scenarios; in terms of structure stability and durability, a porous structure is formed, adsorption and air permeability are strengthened, the product life after transfer is prolonged and user experience is improved; the printing layer surface is specially treated and ultraviolet absorber is added, the roughness is suitable to ensure ink adhesion and prevent halo, color is bright and clear, high-precision printing is met, and light fading is prevented, improving use stability and reliability; the side edge of the digital printing lettering film body is provided with a side plate and a guide groove, which provides guidance for equipment parts during printing, ensures smooth and accurate movement of the nozzle, avoids printing deviation and ghosting, improves printing quality and meets high-precision pattern requirements. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 A side view structure schematic diagram of the environment-friendly hydrophilic digital printing lettering film is provided.

[0015] Figure 2 A Figure 1 An enlarged structure schematic diagram of part A shown in the figure.

[0016] Figure 3 A top view structure schematic diagram of the environment-friendly hydrophilic digital printing lettering film.

[0017] The drawings show that: 1, the digital printing lettering film body; 2, the base layer; 3, the adhesive layer; 4, the functional layer; 5, the printing layer; 6, the side plate; 7, the guide groove; 8, the easy-to-tear hole; 9, the notch; 10, the roll pipe. DETAILED DESCRIPTION

[0018] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used in the description herein is for describing particular embodiments only and is not intended to be limiting upon the application; the terms "comprising," "including," and "having," and variations thereof, as used in enrolling and claims herein, are intended to be open-ended and to mean including, but not limited to; the terms "first," "second," and the like, as used in the description herein, are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order.

[0019] Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are they necessarily mutually exclusive of one another. As will be apparent to those of ordinary skill in the art upon reading this description, the embodiments described herein can be combinable with other embodiments.

[0020] The utility model embodiment provides a kind of environment-friendly hydrophilic digital printing lettering film, as shown in Figures 1-3 The environment-friendly hydrophilic digital printing lettering film includes: digital printing lettering film main body 1 rolled on winding pipe 10, and the digital printing lettering film main body 1 includes base layer 2;Glue layer 3 is arranged on the base layer 2, functional layer 4 on the glue layer 3;Print layer 5 is arranged on the functional layer 4.

[0021] In the embodiment, the digital printing lettering film body 1 is wound on the winding pipe 10, which facilitates storage, transportation and subsequent use. The winding pipe 10 can protect the lettering film body 1 from physical damage such as scratching and bending before use, ensure the integrity of the lettering film, facilitate subsequent processing operation, and reduce the waste rate caused by damage to the film body. The base layer 2 in the digital printing lettering film body 1 is made of degradable material, which solves the environmental problem caused by the non-degradable plastic layer of traditional lettering film from the source. In the production process, the degradable material reduces the consumption of non-renewable resources, reduces the pressure on the environment, and avoids the situation that the global climate warming is aggravated by a large amount of energy consumption and emission of greenhouse gases in the traditional plastic processing process. Moreover, the degradable base layer 2 can be naturally decomposed in the waste treatment stage, and will not occupy the soil space for a long time like the traditional plastic layer, hinder the soil ventilation and water permeability, so as to protect the normal activity of soil microbial community, maintain soil fertility, and be beneficial to crop growth and vegetation restoration, which is of great significance to the sustainable development of ecological environment; the glue layer 3 uses environmentally friendly glue, which abandons the toxic and harmful substances that may be contained in the traditional bonding layer. On the one hand, it will not release pollutants such as dioxin and styrene to pollute the air, soil and water during production, protect the health of workshop workers and reduce the risk of occupational diseases; on the other hand, its stable chemical properties make the glue layer 3 not easy to be affected by environmental factors and age and crack, ensuring the stability of the overall structure of the lettering film, thereby ensuring the stable connection between the ink absorption layer (corresponding to the ink absorption layer in the traditional structure, which cooperates with the functional layer 4 and the printing layer 5 in the utility model) and the base layer 2, effectively avoiding the phenomenon of blurred and faded printing patterns, meeting the high-quality printing demand, especially meeting the requirements of color accuracy and pattern durability in industries such as advertising and high-end clothing customization, and improving the added value of products; the functional layer 4 is composed of hydrophilic nanoparticles and water-based resin, which brings many benefits. Compared with the traditional simple structure, the hydrophilic nanoparticles endow the functional layer 4 with good hydrophilicity, so that the ink can quickly penetrate and evenly distribute during printing, greatly improving the printing quality and reducing the waste rate caused by uneven ink penetration. At the same time, the water-based resin composition ensures the environmental friendliness of the functional layer 4, which is consistent with the environmental protection concept of the whole lettering film; the printing layer 5 is a special treated coating, and its appropriate surface roughness can ensure the smooth adhesion of ink and prevent ink bleeding, so that the printed pattern has bright colors and clear edges, meeting the high-precision printing demand.And the printing layer 5 adds ultraviolet absorber, can effectively prevent the printed pattern from fading under light, prolongs the service life of pattern, further improves the stability and reliability of the lettering film in the process of using, whether indoor or outdoor use scene, can ensure that the printing effect is durable like new;In summary, the environmental protection hydrophilic digital printing lettering film of the utility model each component synergistic effect, the traditional digital printing lettering film is not environmental protection and the problem of poor performance is completely conquered, and a kind of green, efficient, high-quality material selection is provided for digital printing industry.

[0022] In the further preferred embodiment of the utility model, the base layer 2 is degradable environmental protection polyester material, and the glue layer 3 is water-based polyurethane glue.

[0023] In this embodiment, the degradable environment-friendly polyester material used for the base layer 2 has obvious advantages. In terms of environmental protection, the degradable feature means that when the digital printing lettering film completes its mission and is discarded, it can gradually decompose in the natural environment through the action of microorganisms, eventually returning to the natural ecological cycle, avoiding "white pollution" like traditional plastics, and long-term occupation of land resources and harm to soil ecology. For example, compared with traditional non-degradable plastic layer lettering film, the base layer 2 can achieve most of the degradation in a few months to a few years, the soil permeability and water permeability are restored, which is beneficial to the growth of surrounding plants. From the perspective of material performance, the environment-friendly polyester material has good flexibility, so that the lettering film can easily bend without breaking during winding, unwinding and transfer operation, and can adapt to the mechanical action of various processing equipment, reducing the scrap rate caused by material brittle fracture. At the same time, it has reliable mechanical strength, and can still maintain structural integrity when bearing the pressure of the lettering machine and the pulling force in the transfer process, ensuring the accurate presentation of the pattern on the lettering film, and laying a solid foundation for subsequent high-quality printing, lettering and transfer process; The use of water-based polyurethane glue in the glue layer 3 also brings many benefits. In terms of environmental protection, since water-based polyurethane glue uses water as a solvent, it almost does not release harmful volatile organic compounds (VOCs) during production, use and even storage, such as common harmful substances such as formaldehyde and benzene. This not only keeps the workshop air fresh and protects workers from respiratory diseases, but also means that the use scenarios are more extensive, even in the field of indoor decoration, children's products and other fields with extremely high requirements for air quality, the lettering film of the utility model can be used safely. In terms of bonding efficiency, water-based polyurethane glue exhibits excellent bonding performance, which can form a tight chemical bond with the surface of the base layer 2, and also has strong affinity for the functional layer 4 above, ensuring that the functional layer 4 can be stably attached under different temperature and humidity environments, and will not have delamination and peeling phenomena. For example, in the hot and humid south in summer or the cold and dry north in winter, the glue layer 3 of the lettering film can firmly hold the position, ensure the stability of the overall structure of the lettering film, and make the printed pattern always complete, greatly improving the reliability and durability of the product, and widening the application region and season range of the product.

[0024] In a further preferred embodiment of the utility model, the functional layer 4 is formed by mixing hydrophilic nanoparticles and water-based resin.

[0025] In the embodiment, from the perspective of improving hydrophilicity, the hydrophilic nanoparticles are uniformly dispersed in the aqueous resin, which endows the functional layer 4 with excellent hydrophilicity. In the digital printing process, when the ink contacts the surface of the functional layer 4, the hydrophilic nanoparticles can quickly attract ink molecules, causing the ink to quickly penetrate and evenly spread within the functional layer 4, as if opening a high-speed channel for the ink, allowing the ink to cover the entire printing area in a very short time. Compared with traditional lettering films, this greatly improves the adhesion of the ink, effectively avoids problems such as blurred printing patterns and color mottling caused by uneven ink penetration, greatly improves printing quality, reduces waste, and ensures that each print accurately presents the designed pattern. Focusing on environmental properties, the aqueous resin, as one of the key components of the functional layer 4, has environmentally friendly and non-polluting properties, perfectly matching the green and environmentally friendly concept of the entire lettering film. It does not release harmful chemicals during the entire life cycle of production, use, and disposal, and does not pollute environmental elements such as air, soil, and water, ensuring ecological safety at all stages from raw material processing to final product application, allowing the lettering film to be used in various environmentally demanding scenarios, such as food packaging decoration, medical product labeling, and other fields. From the perspective of structural stability and durability, the hydrophilic nanoparticles and the aqueous resin cooperate to form a microscopic porous structure. On the one hand, this porous structure increases the specific surface area of the functional layer 4, further enhancing the ink adsorption capacity, making the printed pattern more firmly attached to the lettering film. On the other hand, the porous structure also provides good air permeability to the lettering film, which allows air to flow smoothly when the lettering film is attached to the surface of clothing, leather, and other materials in subsequent transfer applications, avoiding problems such as discomfort when wearing clothes or mold and deterioration of leather products caused by heat and lack of ventilation, extending the service life of the transferred product and improving user experience.

[0026] In further preferred embodiments of the present application, the side of the digital printing lettering film body 1 is provided with a side plate 6, and a guide groove 7 is formed in the side plate 6.

[0027] In the embodiment, the side of the digital printing lettering film body 1 is provided with a side plate 6, and a guide groove 7 is formed in the side plate 6, which has very outstanding functionality. In the digital printing process, some key components of the printing equipment, such as the nozzle moving guide rail and the positioning sensor, can be accurately inserted into the guide groove 7, providing a stable guide path for these components. This allows the nozzle to move more smoothly and accurately during high-precision ink ejection, ensuring that the ink can evenly and accurately cover the functional layer 4, avoiding problems such as printing offset and ghosting, greatly improving printing quality, and meeting the needs of application scenarios that require high precision, such as high-end advertising sign making and fine art reproduction.

[0028] The further preferred embodiment of the utility model discloses, a plurality of easy tear holes 8 are longitudinally arranged equidistantly on the digital printing lettering film main body 1, and the easy tear notch 9 is symmetrically arranged on the digital printing lettering film main body 1.

[0029] In the embodiment, a plurality of easy tear holes 8 are longitudinally arranged equidistantly on the digital printing lettering film main body 1, and this innovative design has multiple advantages.In the use link, when the lettering film needs to be segmented according to specific size to adapt to different application scenarios, such as manufacturing small personalized customized badges or large commercial advertising signs, the easy tear hole 8 provides great convenience for manual tearing. The operator only needs to pinch the two sides of the easy tear hole 8, and by means of moderate external force, the lettering film can be accurately and neatly torn along the arrangement direction of the easy tear hole 8, without the need for complex cutting tools, which improves the operation efficiency, reduces the safety risk caused by the use of knives, avoids accidental damage to the surrounding materials of the lettering film, and ensures the effective use of materials; the easy tear notch 9 is symmetrically arranged on the digital printing lettering film main body 1, and the functionality is also excellent.In the initial use preparation stage, when the operator prepares to take the lettering film of the required length from the roll pipe 10, the notch 9 serves as a prominent and accurate starting mark, allowing the operator to quickly locate the cutting position, avoiding material waste caused by blind cutting, ensuring that the length of the lettering film used each time is just right, and meeting the strict size requirements of the subsequent processing technology.

[0030] In the further preferred embodiment of the utility model, the inner wall of the guide groove 7 is coated with a low-friction coating made of fluorocarbon polymer material.

[0031] In the embodiment, during the digital printing process, key components of the printing equipment, such as the nozzle moving guide rail and the positioning sensor, need to move accurately and smoothly along the guide groove 7. The low-friction coating made of fluorocarbon polymer material greatly reduces the friction between these components and the inner wall of the guide groove 7. For the nozzle moving guide rail, low friction makes the nozzle more stable and smooth during high-speed reciprocating motion, reducing the jamming and vibration caused by friction, thereby ensuring that the ink can be sprayed on the functional layer 4 with extremely accurate landing points, avoiding printing deviation and line discontinuity, greatly improving printing precision, and ensuring high-quality printing results, which is particularly important for scenarios such as electronic component identification and precision instrument nameplate printing that require high precision.

[0032] In the further preferred embodiment of the utility model, the surface of the printing layer 5 is further provided with an antistatic coating made of conductive polymer material.

[0033] In the actual operation environment of digital printing, static electricity is easily generated due to the friction between the lettering film and the printing equipment components and the influence of the surrounding environment. For the printing process, if the printing layer 5 does not have an antistatic measure, the accumulation of static electricity can cause the trajectory of ink ejection to deviate. The antistatic coating made of conductive polymer material can quickly conduct the generated static electricity away, ensuring that the ink is ejected along the predetermined trajectory on the printing layer 5 under the precise driving of the nozzle, avoiding problems such as blurred and misaligned printing patterns, and protecting the printing accuracy. This is particularly important for scenarios that require high-precision printing, such as high-end electronic product shell identification and precise medical instrument label making, and can effectively meet the stringent quality requirements.

[0034] In summary, by winding the digital printing lettering film body 1 on the winding pipe 10, storage, transportation and use are facilitated, the winding pipe 10 protects the lettering film from physical damage, ensures its integrity, facilitates subsequent processing, and reduces the waste rate. The base layer 2 is made of degradable and environmentally friendly polyester material. In terms of environmental protection, it can be naturally degraded after being discarded, avoiding "white pollution", and restoring soil permeability and water permeability within a few months to a few years. In terms of performance, it has good flexibility, adapts to processing actions, and has reliable mechanical strength, ensuring accurate pattern presentation. The glue layer 3 uses water-based polyurethane glue, which is environmentally friendly and almost does not release harmful volatile organic compounds during production, use and storage, making it suitable for a wide range of scenarios. In terms of bonding efficiency, it tightly bonds with the base layer 2 and the functional layer 4, stably adheres under different temperature and humidity conditions, ensures structural stability, and improves reliability and durability. The functional layer 4 is made of hydrophilic nanoparticles and water-based resin. In terms of hydrophilicity, the ink quickly penetrates and evenly spreads, improving adhesion, printing quality and reducing waste. In terms of environmental properties, the water-based resin has no pollution throughout its life cycle, making it suitable for strict environmental scenarios. In terms of structural stability and durability, it forms a porous structure, strengthens adsorption and air permeability, prolongs the service life of the transferred product, and improves user experience. The printing layer 5 is specially treated and added with ultraviolet absorber, and has appropriate roughness to ensure ink adhesion and prevent halo, bright colors and clear edges, meeting the needs of high-precision printing, and preventing light fading, improving stability and reliability. The side edges of the digital printing lettering film body 1 are provided with side plates 6 and guide grooves 7, which provide guidance for equipment components during printing, ensure smooth and accurate movement of the nozzle, avoid printing deviation and ghosting, improve printing quality, and meet the needs of high-precision patterns.

[0035] It is worth noting that the circuits, electronic components and modules involved in the present application are all prior art, and those skilled in the art can implement them without further description. The content protected by the present application does not involve improvement of software and methods.

[0036] In several embodiments provided by the present application, it should be understood that the disclosed device can be implemented in other ways.

[0037] The above examples are only used to illustrate the technical solutions of the present application, and are not intended to limit the protection scope of the present application. Obviously, the described examples are only some of the embodiments of the present application, not all the embodiments. Based on these examples, all other embodiments obtained by those of ordinary skill in the art without creative labor fall within the scope of the present application. Although the present application has been described in detail with reference to the above examples, those of ordinary skill in the art can still combine, add or delete the features in the embodiments of the present application according to the circumstances without creative labor, so as to obtain different other technical solutions which do not deviate from the concept of the present application in essence, and these technical solutions also fall within the scope of the present application.

Claims

1. An environmentally friendly hydrophilic digital printing lettering film, characterized in that, Include: The digital printing lettering film body rolled on the roll pipe, the digital printing lettering film body includes base layer; The glue layer is arranged on the base layer, and the functional layer is arranged on the glue layer; The printing layer is arranged on the functional layer.

2. The environmentally friendly hydrophilic digital printing lettering film according to claim 1, characterized in that, The base layer is a degradable environment-friendly polyester material, and the glue layer is water-based polyurethane glue.

3. The environmentally friendly hydrophilic digital printing lettering film according to claim 1, characterized in that, The side of the digital printing lettering film body is provided with a side plate, and a guide groove is formed in the side plate.

4. The environmentally friendly hydrophilic digital printing lettering film according to claim 1, characterized in that, A plurality of easy-to-tear holes are longitudinally arranged at equal intervals on the digital printing lettering film body, and an easy-to-tear notch is symmetrically formed on the digital printing lettering film body.

5. The environmentally friendly hydrophilic digital printing lettering film according to claim 3, characterized in that, The inner wall of the guide groove is coated with a low-friction coating made of fluorocarbon polymer material.

6. The environmentally friendly hydrophilic digital print write film according to claim 1, wherein, The surface of the printing layer is also provided with an antistatic coating made of conductive polymer material.

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