阅读说明：本技术 印刷联线过油增加上油量的方法 (Method for increasing oil adding amount by printing online oil passing ) 是由 黄泽晓 黄华 周君良 陆锦兵 于 2020-10-23 设计创作，主要内容包括：本发明属于印刷技术领域,尤其涉及一种印刷联线过油增加上油量的方法,包括以下步骤：印刷机上纸；印刷机印刷；联线过水油,于印刷机上的过油功能座上进行过水性上光油,过油功能座上具有上油网纹辊,上油网纹辊的目数在60～80目之间,水性上光油的粘度在77～95秒/25℃之间。本发明的方法中,增加联线过水油步骤,在过油功能座上进行过水性上光油,通过设定过水性上光油的上油网纹辊的目数在60～80目之间,并且使用粘度在77～95秒/25℃之间的水性上光油执行该步骤,这样,上油网纹辊能有效的带起至少50g/m~2水油,按10％上油网纹棍转移到印刷纸张上油量,能在纸张上上至少5g/m~2的水性上光油,并能在高速印刷中不飞油,不堵塞,确保印刷后的产品耐磨度和耐折度更佳。(The invention belongs to the technical field of printing, and particularly relates to a method for increasing the oil adding amount by printing online oil passing, which comprises the following steps: feeding paper on a printing machine; printing by a printing machine; and (3) connecting the lines, and performing water-based polishing oil on an oil-passing functional seat on the printing machine, wherein an oiling anilox roller is arranged on the oil-passing functional seat, the mesh number of the oiling anilox roller is 60-80 meshes, and the viscosity of the water-based polishing oil is 77-95 seconds/25 ℃. In the method, a step of online water passing oil passing is added, water passing glazing oil is carried out on an oil passing functional seat, the step is carried out by setting the mesh number of an oiling anilox roller of the water passing glazing oil to be 60-80 meshes and using the water-based glazing oil with the viscosity of 77-95 seconds/25 ℃, so that the oiling anilox roller can effectively carry up at least 50g/m 2 Water and oil, the amount of oil transferred to the printing paper by a 10% oiling anilox roller can be at least 5g/m 2 The water-based varnish can not generate oil flying and blockage in high-speed printing, and ensures that the product after printing has better wear resistance and folding resistance.)

1. A method for increasing the oil adding amount of a printing online oil passing process is characterized in that: the method comprises the following steps:

feeding paper on a printing machine;

printing by a printing machine;

the online water-based oil coating method comprises the following steps of connecting a line, coating water-based oil coating on an oil coating functional seat on a printing machine, wherein an oiling anilox roller is arranged on the oil coating functional seat, the mesh number of the oiling anilox roller is 60-80 meshes, and the viscosity of the water-based oil coating is 77-95 seconds/25 ℃.

2. The method for increasing the amount of oil added in the printing online oil-passing process according to claim 1, wherein: the mesh number of the oiling anilox roller is 80 meshes.

3. The method for increasing the amount of oil added in the printing online oil-passing process according to claim 1, wherein: and a strip-shaped groove which is spirally arranged along the axial direction is arranged on the surface of the oiling anilox roller.

4. The method for increasing the amount of oil added in the printing online oil-passing process according to claim 1, wherein: the spiral inclination angle of each strip-shaped groove is between 30 and 45 degrees.

5. The method for increasing the amount of oil added in the printing online oil feeding according to claim 4, wherein: the spiral inclination angle of each strip-shaped groove is 45 degrees.

6. The method for increasing the amount of oil added in the printing online oil feeding according to claim 4, wherein: the cross section of each strip-shaped groove is formed to be square.

7. The method for increasing the oil adding amount of the printing online oil passing according to any one of claims 1 to 6, wherein: in the printing step of the printing machine, the speed of the printing paper is controlled to be 10000-12000 sheets/hour.

8. The method for increasing the amount of oil added in the printing online oil feeding according to claim 7, wherein: in the printing step of the printing machine, the speed of printing paper is controlled to 10000 sheets/hour.

Technical Field

The invention belongs to the technical field of printing, and particularly relates to a method for increasing the oil adding amount of a printing online oil passing process.

Background

Nowadays, the society focuses on low carbon and environmental protection more and more, and the printing of green concepts is deeply mastered. The water-based varnish has the characteristics of no toxicity, no odor, strong transparency, no emission of organic volatile matters (voc), low cost, wide raw material sources and the like, can endow printed matters with good glossiness, folding resistance, wear resistance and chemical resistance in use, has good environmental protection performance, and is an environment-friendly material, so the water-based varnish is widely popularized and applied in the market at present.

The online water and oil transferring of the flexo printing machine on the current market to paper at one time is generally 1.3g/m²～2.5g/m²The off-line oil passing amount is generally 5g/m²～6g/m²For some folding-resistant or wear-resistant water and oil, the surface of the printed matter can be better protected by increasing the oil applying amount.

In the existing production technology, a plurality of middle-high-end color box surface treatments adopt covering of a layer of matt PP film or off-line over-full UV, so that printed matters are more resistant to folding, waterproof, scratch-resistant and not easy to fade. But PP film and UV are not easy to degrade and are environment-friendly materials.

Disclosure of Invention

The invention aims to provide a method for increasing the oil adding amount of a printing line, and aims to solve the technical problem that the wear resistance and the folding resistance of a printed product are poor due to the fact that the oil adding amount of the printing line is small in the existing printing technology.

In order to achieve the above object, an embodiment of the present invention provides a method for increasing an amount of oil added in a printing online process, including the following steps:

feeding paper on a printing machine;

printing by a printing machine;

the online water-based oil coating method comprises the following steps of connecting a line, coating water-based oil coating on an oil coating functional seat on a printing machine, wherein an oiling anilox roller is arranged on the oil coating functional seat, the mesh number of the oiling anilox roller is 60-80 meshes, and the viscosity of the water-based oil coating is 77-95 seconds/25 ℃.

Further, the mesh number of the oiling anilox roller is 80 meshes.

Further, a strip-shaped groove which is spirally arranged along the axial direction is arranged on the surface of the oiling anilox roller.

Furthermore, the spiral inclination angle of each strip-shaped groove is between 30 and 45 degrees.

Further, the helical inclination of each of the strip-shaped grooves is 45 °.

Further, the cross section of each of the strip-shaped grooves is formed in a square shape.

Further, in the printing step of the printing machine, the speed of the printing paper is controlled to be 10000-12000 sheets/hour.

Further, in the printing step of the printing press, the speed of printing paper was controlled to 10000 sheets/hour.

One or more technical schemes in the method for increasing the oil adding amount by printing online oil passing provided by the embodiment of the invention at least have one of the following technical effects: in the method for increasing the oiling amount in the online oiling process, the online oiling step is added after the printing step of the printing machine, the online oiling step is carried out on an oiling functional seat on the printing machine, the online oiling step is carried out by setting the mesh number of an oiling anilox roller with the waterborne oiling process to be 60-80 meshes and using the waterborne oiling process with the viscosity of 77-95 seconds/25 ℃, so that the oiling anilox roller can effectively take up at least 50g/m²Water and oil, the amount of oil transferred to the printing paper by a 10% oiling anilox roller can be at least 5g/m²The water-based varnish can not generate oil flying and blockage in high-speed printing, and ensures that the product after printing has better wear resistance and folding resistance.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise.

Fig. 1 is a flowchart of a method for increasing the amount of oil added in a printing on-line according to an embodiment of the present invention.

Fig. 2 is a schematic structural diagram of an oiling anilox roller provided by an embodiment of the present invention.

Fig. 3 is a schematic view of a partial structure method at a in fig. 2.

Wherein, in the figures, the respective reference numerals:

10-oiling anilox roller 11-strip groove.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary and intended to be illustrative of the embodiments of the present invention, and should not be construed as limiting the invention.

In one embodiment of the present invention, as shown in fig. 1, there is provided a method for increasing the amount of oil added in a printing line, comprising the steps of:

s100: feeding paper on a printing machine; in the working procedure, the conventional paper feeding step is carried out;

s200: printing by a printing machine; in the working procedure, the conventional paper feeding step is also carried out;

s300: connecting lines, passing water and oil, and performing water-passing polishing oil on an oil passing functional seat on a printing machine, wherein an oiling anilox roller 10 is arranged on the oil passing functional seat, the mesh number of the oiling anilox roller 10 is 60-80 meshes, and specifically, the mesh number of the oiling anilox roller 10 can be 60 meshes, 70 meshes or 80 meshes; the viscosity of the water-based varnish is 77-95 seconds/25 ℃; specifically, the viscosity of the aqueous varnish may be 77 seconds/25 ℃, 80 seconds/25 ℃, 85 seconds/25 ℃, 90 seconds/25 ℃, or 95 seconds/25 ℃. In the procedure, a step of water-borne glazing oil is carried out, wherein the water-borne glazing oil is carried out by using an oiling anilox roller 10 with 60-80 meshes mounted on an oiling functional seat on a printing machine, and the viscosity of the water-borne glazing oil is adjusted to be 77-95 seconds/25 ℃. Therefore, the amount of oil transferred to printing paper by the waterborne glazing oil can be ensured to be as much as possible, and the wear resistance and folding resistance of the product can be improved.

More specifically, one or more of the above technical solutions in the method for increasing the amount of oil added in the printing on-line oil passing process provided by the embodiment of the present invention have at least one of the following technical effects: the printing on-line of the inventionIn the method for increasing the oil adding amount, an online water and oil adding step is added after a printing step of a printing machine, the online water and oil adding step carries out water-borne glazing oil on a water-borne functional seat on the printing machine, the step is carried out by setting the mesh number of a water-borne glazing oil adding anilox roller 10 to be 60-80 meshes and using water-borne glazing oil with the viscosity of 77-95 seconds/25 ℃, so that the glazing oil adding anilox roller 10 can effectively take up at least 50g/m²Water and oil, the amount of oil transferred to the printing paper by a 10% oiling anilox roller can be at least 5g/m²The water-based varnish replaces and cancels an inefficient off-line varnish passing process, greatly promotes the production benefit, can not fly varnish and block in high-speed printing, and ensures that the product after printing has better wear resistance and folding resistance.

In the method of the embodiment, the surface protection of the product can be increased by using the environment-friendly water and oil in the surface treatment process of the color box, the product is partially plasticized, the production cost is reduced, and the production purposes of green, low carbon and environment protection are achieved.

In this embodiment, the mesh number of the oiling anilox roller 10 is preferably 80 mesh. The mesh number of the oiling anilox roller 10 is set to 80 meshes, which is most beneficial to realizing water-based glazing oil, and further realizing the transfer of the water-based glazing oil to printing paper as much as possible.

In this embodiment, as shown in fig. 2 to 3, a strip-shaped groove 11 spirally arranged in the axial direction is further provided on the surface of the oiling anilox roller 10. Different from the latticed groove structure in the prior art, in the method of the present embodiment, the grooved channel on the surface of the oiling anilox roller 10 is improved, and the grooved channel is arranged to form a plurality of strip-shaped grooves 11 arranged spirally along the axial direction to form lines, so that the transfer of the aqueous glazing oil on the oiling anilox roller 10 to the printing paper can be facilitated.

In this embodiment, the spiral inclination angle of each strip-shaped groove 11 is further between 30 ° and 45 °. In particular, the helical inclination of the strip groove 11 may be 30 °, 35 °, 40 ° or 45 °, etc., by which the aqueous varnish contained in the strip groove 11 is more easily transferred to the printing sheet as the oiling anilox roller 10 rotates.

In this embodiment, the helical inclination of each of the strip-shaped grooves 11 is preferably 45 °. The spiral inclination angle of the strip-shaped groove 11 is set to be 45 degrees, so that the water-based varnish attached to the varnish screen roller 10 can be transferred to printing paper to the maximum extent when the water-based varnish screen roller rotates, no varnish is splashed and blocked in high-speed printing, and the better wear resistance and folding resistance of a printed product are ensured.

In this embodiment, the cross section of each of the grooves 11 is formed in a square shape. The section is the rectangular bar groove 11 and realizes the trapped oil more easily to under its spiral arrangement state, also realize easily that the waterborne gloss oil shifts to the printing paper on, structural design is reasonable, and the practicality is strong.

In the embodiment, in the printing step of the printing machine, the speed of the printing paper is controlled to be 10000-12000 sheets/hour. Specifically, the speed of controlling the printing sheet may be 10000 sheets/hour, 11000 sheets/hour, 12000 sheets/hour, or the like. So, be favorable to and the cooperation of paper with the anilox roller 10 that oils, accept the waterborne gloss oil that shifts on the anilox roller 10 that oils, and then guarantee furthest that waterborne gloss oil as much as possible moves the oil mass on the printing paper.

In this embodiment, it is preferable that, in the printing step of the printing machine, the speed of printing paper is controlled to 10000 sheets/hour. The speed of the printing sheet is set to 10000 sheets/hour, which is most advantageous for receiving the aqueous varnish transferred on the oiling anilox roll 10, ensuring at least 5g/m²The aqueous varnish of (a) can be transferred to a printing sheet.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.