Printing ink modification process based on physical method

Abstract

The invention discloses a printing ink modification process based on a physical method. The printing ink modification process comprises the following steps: step 1, preparing raw materials; step 2, pre-treatment is carried out; step 3, mixing and stirring the raw materials; step 4, standing and defoaming; step 5, filtering treatment; sixthly, auxiliary machining is conducted; step 7, modification preparation; step 8, physical modification; step 9, performance detection; according to the invention, the plasma generator is used as a core device to generate plasmas to impact the surface of the surface printing ink, change the molecular distribution of the surface of the ink layer and improve the surface free energy of the ink film layer, so that the ink film layer can be used for subsequent compounding; ozone generated when the plasma generator impacts air is timely discharged by matching with the air circulating device, so that the modification effect and the treatment efficiency are improved, the surface tension of an ink film with low surface energy is improved, and the ink film is finally applied to compounding; before preparation, the raw materials are stirred at a constant temperature, so that the uniformity of the raw materials in the mixing process is guaranteed, and the preparation quality of the ink is guaranteed.

Description

Technical Field

[0001] The invention relates to the technical field of printing ink, in particular to a printing ink modification process based on a physical method. Background Art

[0002] The flexible packaging industry is widely used in the food and daily necessities industries. For example, cooked food packaging bags are often printed with various exquisite patterns. The inks involved are divided into two categories, one is the inner printing ink and the other is the surface printing ink. The inner printing ink is usually used for lamination, that is, the ink is between two layers of film, and the other is the surface printing ink, that is, the ink is directly exposed to the air. For a long time, these two types of inks cannot be mixed, resulting in the need to constantly change the type of ink in actual production, which also increases the trouble of category management.

[0003] Therefore, unifying the two inks through physical methods can make production management more convenient and reduce ink costs. The surface ink is directly exposed to the air after film formation and will also come into direct contact with human skin, so the ink film is required to be smooth, which directly reflects the physical property of low surface tension. When inks with low surface tension are used for compounding, film separation will occur. It is necessary to design a printing ink modification process based on physical methods according to the above principles. Summary of the invention

[0004] The object of the present invention is to provide a printing ink modification process based on a physical method to solve the problems raised in the above background technology.

[0005] To achieve the above object, the present invention provides the following technical solution: a printing ink modification process based on a physical method, comprising the following steps: step one, raw material preparation; step two, pre-processing; step three, raw material mixing; step four, standing and defoaming; step five, filtering treatment; step six, auxiliary processing; step seven, modification preparation; step eight, physical modification; step nine, performance testing;

[0006] In the above step 1, vegetable oil ester, ethanolamine, water, rosin maleic anhydride polyol ester, water-based acrylic color paste and wetting agent are weighed as needed and set aside;

[0007] In the above step 2, the vegetable oil ester, ethanolamine, rosin maleic anhydride polyol ester and water-based acrylic color paste prepared in the above step 1 are respectively placed in a stirring box, and then stirred at a constant temperature in the stirring box. After constant temperature stirring, the supernatant is filtered and extracted to obtain the vegetable oil ester raw material, ethanolamine raw material, rosin maleic anhydride polyol ester raw material and water-based acrylic color paste raw material for standby use;

[0008] In the above step 3, the vegetable oil ester raw material, ethanolamine raw material, rosin maleic anhydride polyol ester raw material and water-based acrylic color paste raw material prepared in the above step 2 are respectively placed in a mixing box, and then initially stirred in the mixing box, and after the initial stirring, the water and wetting agent prepared in the above step 1 are added for secondary stirring, and the initial ink is obtained after the secondary stirring for standby use;

[0009] In the above step 4, the initial ink prepared in the above step 3 is placed in a static pool, and then slowly stirred in the static pool, and a defoaming agent is slowly added to the static pool during the slow stirring process; after slow stirring, the static pool is kept at a constant temperature, and bubble-free ink is obtained after the static pool is kept for use;

[0010] In the above step 5, the bubble-free ink prepared in the above step 4 is poured into the filter tank, and then filtered in the filter tank to remove impurities to obtain the surface printing ink for standby use;

[0011] In the above step 6, the surface printing ink prepared in the above step 5 is placed in a mixing box, and then vanadium naphthenate is added to the mixing box, and then continuously stirred in the mixing box, and the ink to be modified is obtained after continuous stirring, and is set aside;

[0012] In the above step 7, the modified ink prepared in the above step 6 is placed in a processing container, and then the processing container is placed in a processing device for standby use;

[0013] In the above step eight, the modification treatment is carried out in the treatment equipment prepared in the above step seven, and the printing ink is obtained after the modification treatment and is set aside;

[0014] In the above step nine, the printing ink obtained in the above step eight is subjected to a performance test, and is then filled and packaged after passing the test.

[0015] As a further technical solution of the present invention, in the step 1, the mass proportions of the vegetable oil ester, ethanolamine, water, rosin maleic anhydride polyol ester, water-based acrylic color paste and wetting agent weighed are 20 to 40 parts of vegetable oil ester, 10 to 20 parts of ethanolamine, 2 to 36 parts of water, 15 to 21 parts of rosin maleic anhydride polyol ester, 6 to 10 parts of water-based acrylic color paste and 1 to 3 parts of wetting agent respectively.

[0016] As a further technical solution of the present invention, in step 2, during the constant temperature stirring in the stirring box, the temperature in the stirring box is 30-35°C, the stirring rate of the constant temperature stirring is 32-36r / min, and the constant temperature stirring time is 35-50min.

[0017] As a further technical solution of the present invention, in the step three, during the initial stirring in the mixing box, the stirring rate of the mixing box is 25 to 32 r / min, and the time of the initial stirring is 15 to 20 min; during the secondary stirring in the mixing box, the stirring rate of the mixing box is 15 to 18 r / min, and the time of the initial stirring is 35 to 50 min.

[0018] As a further technical solution of the present invention, in step four, during the slow stirring in the static tank, the temperature in the static tank is 30-35°C, the stirring rate of the slow stirring is 15-18r / min, the slow stirring time is 10-15min, the static temperature after slow stirring is 28-30°C, and the constant temperature static time is 20-30min.

[0019] As a further technical solution of the present invention, in step five, the temperature in the filter tank during the filtration process is 35-40° C., and the rotation speed of the stirring frame in the filter tank during the filtration process is 25-28 r / min.

[0020] As a further technical solution of the present invention, in step six, the mass fraction of vanadium naphthoate added is 2 to 4 parts, the stirring speed in the mixing box during continuous stirring is 28 to 30 r / min, and the continuous stirring time is 7 to 12 min.

[0021] As a further technical solution of the present invention, in step seven, the processing equipment includes an ion generator that can generate high-energy plasma and an air circulation device that can circulate air.

[0022] As a further technical solution of the present invention, in step eight, the plasma generator serves as a core device in the modification process to generate plasma to impact the surface of the printed ink, thereby changing the molecular distribution on the surface of the ink layer, and further increasing the surface free energy of the ink film layer so that it can be used for subsequent composite processing; the air circulation device is mainly used to promptly remove the ozone generated by the plasma generator when impacting the air, and at the same time evenly transport the air containing active particles to the ink surface to improve the modification effect and treatment efficiency.

[0023] As a further technical solution of the present invention, in step nine, the performance test includes water content test, permeability test, relative density test, surface tension test, viscosity test and absorption performance test.

[0024] Compared with the prior art, the beneficial effects of the present invention are as follows: the printing ink modification process based on physical methods uses a plasma generator as a core device to generate plasma to impact the surface of the surface printing ink, thereby changing the molecular distribution on the surface of the ink layer, and then increasing the surface free energy of the ink film layer so that it can be used for subsequent compounding; the air circulation device is mainly used to promptly remove the ozone generated by the plasma generator when impacting the air, and at the same time, evenly transport the air containing active particles to the ink surface to improve the modification effect and processing efficiency, so that the ink film with low surface energy increases its surface tension and is finally applied to compounding, so that only one surface printing ink needs to be used in printing to achieve the purpose of both compounding and being used as ordinary surface printing ink; the raw materials are respectively stirred at a constant temperature before preparation, which ensures the uniformity of the raw materials during the mixing process and the preparation quality of the ink. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a process flow chart of the present invention. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0027] Please refer to the attached Figure 1 The present invention provides a technical solution: a printing ink modification process based on a physical method, comprising the following steps: step one, raw material preparation; step two, pre-processing; step three, raw material mixing; step four, standing and defoaming; step five, filtering treatment; step six, auxiliary processing; step seven, modification preparation; step eight, physical modification; step nine, performance testing;

[0028] Wherein in the above step 1, vegetable oil ester, ethanolamine, water, rosin maleic anhydride polyol ester, water-based acrylic color paste and wetting agent are weighed as needed and set aside; the mass proportions of the vegetable oil ester, ethanolamine, water, rosin maleic anhydride polyol ester, water-based acrylic color paste and wetting agent weighed are 20 to 40 parts of vegetable oil ester, 10 to 20 parts of ethanolamine, 2 to 36 parts of water, 15 to 21 parts of rosin maleic anhydride polyol ester, 6 to 10 parts of water-based acrylic color paste and 1 to 3 parts of wetting agent respectively;

[0029] In the above step 2, the vegetable oil ester, ethanolamine, rosin maleic anhydride polyol ester and water-based acrylic color paste prepared in the above step 1 are respectively put into a stirring box, and then stirred at a constant temperature in the stirring box. After constant temperature stirring, the supernatant is filtered and extracted to obtain the vegetable oil ester raw material, ethanolamine raw material, rosin maleic anhydride polyol ester raw material and water-based acrylic color paste raw material for standby use; during the constant temperature stirring in the stirring box, the temperature in the stirring box is 30-35° C., the stirring rate of the constant temperature stirring is 32-36 r / min, and the constant temperature stirring time is 35-50 min;

[0030] In the above step 3, the vegetable oil ester raw material, ethanolamine raw material, rosin maleic anhydride polyol ester raw material and water-based acrylic color paste raw material prepared in the above step 2 are respectively placed in a mixing box, and then the initial stirring is carried out in the mixing box. After the initial stirring, the water and wetting agent prepared in the above step 1 are added for secondary stirring, and the initial ink is obtained after the secondary stirring for standby use; during the initial stirring in the mixing box, the stirring rate of the mixing box is 25-32 r / min, and the time of the initial stirring is 15-20 min; during the secondary stirring in the mixing box, the stirring rate of the mixing box is 15-18 r / min, and the time of the initial stirring is 35-50 min;

[0031] In the above step 4, the initial ink prepared in the above step 3 is placed in a static pool, and then slowly stirred in the static pool, and a defoaming agent is slowly added to the static pool during the slow stirring; after slow stirring, it is kept at a constant temperature, and bubble-free ink is obtained after standing for standby; during the slow stirring in the static pool, the temperature in the static pool is 30-35°C, the stirring rate of the slow stirring is 15-18r / min, the slow stirring time is 10-15min, the static temperature after slow stirring is 28-30°C, and the constant temperature standing time is 20-30min;

[0032] In the above step 5, the bubble-free ink prepared in the above step 4 is poured into the filter tank, and then filtered in the filter tank to remove impurities to obtain the surface printing ink for standby use; the temperature in the filter tank during the filtration process is 35-40° C., and the speed of the stirring frame in the filter tank during the filtration process is 25-28 r / min;

[0033] In the above step 6, the surface printing ink prepared in the above step 5 is placed in a mixing box, and then vanadium naphthenate is added to the mixing box, and then continuously stirred in the mixing box, and the ink to be modified is obtained after continuous stirring, and the ink is set aside; the mass fraction of vanadium naphthenate added is 2 to 4 parts, the stirring speed in the mixing box during the continuous stirring process is 28 to 30 r / min, and the continuous stirring time is 7 to 12 minutes;

[0034] In the above step 7, the modified ink prepared in the above step 6 is placed in a processing container, and then the processing container is placed in a processing device for standby use; the processing device includes an ion generator that can generate high-energy plasma and an air circulation device that can circulate air;

[0035] In the above step eight, the modification treatment is carried out in the treatment equipment prepared in the above step seven, and the printing ink is obtained after the modification treatment and is used for standby; during the modification treatment, the plasma generator is used as a core device to generate plasma to impact the surface of the printing ink, thereby changing the molecular distribution on the surface of the ink layer, thereby increasing the surface free energy of the ink film layer so that it can be used for subsequent compounding; the air circulation device is mainly used to timely remove the ozone generated by the plasma generator when impacting the air, and at the same time, evenly transport the air containing active particles to the surface of the ink to improve the modification effect and treatment efficiency;

[0036] In the above step nine, the printing ink obtained in the above step eight is subjected to a performance test, and after passing the test, it is filled and packaged; the performance test includes water content test, permeability test, relative density test, surface tension test, viscosity test and absorption performance test.

[0037] Based on the above, the advantage of the present invention is that, when used, the present invention uses a plasma generator as a core device to generate plasma to impact the surface of the surface printing ink, thereby changing the molecular distribution on the surface of the ink layer, and then increasing the surface free energy of the ink film layer, so that it can be used for subsequent compounding; the air circulation device is mainly used to timely remove the ozone generated by the plasma generator when impacting the air, and at the same time, the air containing active particles is evenly transported to the ink surface, so as to improve the modification effect and processing efficiency, so that the ink film with low surface energy increases its surface tension, and finally applies it to compounding, so that only one surface printing ink needs to be used in printing to achieve the purpose of both compounding and being used as ordinary surface printing ink; before preparation, the raw materials are respectively stirred at a constant temperature to ensure the uniformity of the raw materials during the mixing process and the preparation quality of the ink.

[0038] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

Claims

1. A printing ink modification process based on a physical method, comprising the following steps: Step 1, raw material preparation; Step 2, pre-treatment; Step 3, raw material mixing; Step 4, standing and defoaming; Step 5, filtration treatment; Step 6, auxiliary processing; Step 7, modification preparation; Step 8, physical modification; Step 9, performance testing; It is characterized by: In the above step 1, vegetable oil ester, ethanolamine, water, rosin maleic anhydride polyol ester, water-based acrylic color paste and wetting agent are weighed as needed and set aside; In the above step 2, the vegetable oil ester, ethanolamine, rosin maleic anhydride polyol ester and water-based acrylic color paste prepared in the above step 1 are respectively placed in a stirring box, and then stirred at a constant temperature in the stirring box. After constant temperature stirring, the supernatant is filtered and extracted to obtain the vegetable oil ester raw material, ethanolamine raw material, rosin maleic anhydride polyol ester raw material and water-based acrylic color paste raw material for standby use; In the above step 3, the vegetable oil ester raw material, ethanolamine raw material, rosin maleic anhydride polyol ester raw material and water-based acrylic color paste raw material prepared in the above step 2 are respectively placed in a mixing box, and then initially stirred in the mixing box, and after the initial stirring, the water and wetting agent prepared in the above step 1 are added for secondary stirring, and the initial ink is obtained after the secondary stirring for standby use; In the above step 4, the initial ink prepared in the above step 3 is placed in a static pool, and then slowly stirred in the static pool, and a defoaming agent is slowly added to the static pool during the slow stirring process; after slow stirring, the static pool is kept at a constant temperature, and bubble-free ink is obtained after the static pool is kept for use; In the above step 5, the bubble-free ink prepared in the above step 4 is poured into the filter tank, and then filtered in the filter tank to remove impurities to obtain the surface printing ink for standby use; In the above step 6, the surface printing ink prepared in the above step 5 is placed in a mixing box, and then vanadium naphthenate is added to the mixing box, and then continuously stirred in the mixing box, and the ink to be modified is obtained after continuous stirring, and is set aside; In the above step 7, the modified ink prepared in the above step 6 is placed in a processing container, and then the processing container is placed in a processing device for standby use; In the above step eight, the modification treatment is carried out in the treatment equipment prepared in the above step seven, and the printing ink is obtained after the modification treatment and is set aside; In the above step nine, the printing ink obtained in the above step eight is subjected to a performance test, and is then filled and packaged after passing the test.

2. The printing ink modification process based on a physical method according to claim 1, characterized in that: In the step 1, the weight proportions of the vegetable oil ester, ethanolamine, water, rosin maleic anhydride polyol ester, water-based acrylic color paste and wetting agent weighed are 20 to 40 parts of vegetable oil ester, 10 to 20 parts of ethanolamine, 2 to 36 parts of water, 15 to 21 parts of rosin maleic anhydride polyol ester, 6 to 10 parts of water-based acrylic color paste and 1 to 3 parts of wetting agent, respectively.

3. The printing ink modification process based on a physical method according to claim 1, characterized in that: In the step 2, during the constant temperature stirring in the stirring box, the temperature in the stirring box is 30-35° C., the stirring rate of the constant temperature stirring is 32-36 r / min, and the constant temperature stirring time is 35-50 min.

4. The printing ink modification process based on a physical method according to claim 1, characterized in that: In the step three, during the initial stirring in the mixing box, the stirring rate of the mixing box is 25 to 32 r / min, and the initial stirring time is 15 to 20 min; during the secondary stirring in the mixing box, the stirring rate of the mixing box is 15 to 18 r / min, and the initial stirring time is 35 to 50 min.

5. The printing ink modification process based on a physical method according to claim 1, characterized in that: In the step 4, during the slow stirring in the static tank, the temperature in the static tank is 30-35°C, the stirring rate of the slow stirring is 15-18 r / min, the slow stirring time is 10-15 min, the static temperature after slow stirring is 28-30°C, and the constant temperature static time is 20-30 min.

6. The printing ink modification process based on a physical method according to claim 1, characterized in that: In the step 5, the temperature in the filter tank during the filtration process is 35-40° C., and the rotation speed of the stirring frame in the filter tank during the filtration process is 25-28 r / min.

7. The printing ink modification process based on a physical method according to claim 1, characterized in that: In the step six, the mass fraction of vanadium naphthoate added is 2 to 4 parts, the stirring speed in the mixing box during continuous stirring is 28 to 30 r / min, and the continuous stirring time is 7 to 12 min.

8. The printing ink modification process based on a physical method according to claim 1, characterized in that: In the step seven, the processing equipment includes an ion generator capable of generating high-energy plasma and an air circulation device capable of circulating air.

9. The printing ink modification process based on a physical method according to claim 1, characterized in that: In step eight, the plasma generator serves as a core device during the modification process, generating plasma to impact the surface of the printed ink, thereby changing the molecular distribution on the surface of the ink layer, and further increasing the surface free energy of the ink film layer so that it can be used for subsequent compounding; the air circulation device is mainly used to promptly remove the ozone generated by the plasma generator when impacting the air, and at the same time evenly transport the air containing active particles to the ink surface to improve the modification effect and treatment efficiency.

10. The printing ink modification process based on a physical method according to claim 1, characterized in that: In the step nine, the performance test includes water content test, permeability test, relative density test, surface tension test, viscosity test and absorption performance test.

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