CN112622358A - Transparent writing quick-drying page film and preparation method thereof - Google Patents
Transparent writing quick-drying page film and preparation method thereof Download PDFInfo
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- B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
- B32B37/06—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the heating method
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- C08J2323/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
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Abstract
The invention relates to the technical field of page films, in particular to a transparent writing quick-drying page film and a preparation method thereof, wherein the transparent writing quick-drying page film comprises the following components in parts by weight: 20-30 parts of polypropylene resin, 15-20 parts of acrylic acid, 6-12 parts of diatomite, 5-9 parts of starch, 3-7 parts of acrylamide, 2-4 parts of calcium carbonate and 3-4 parts of an auxiliary agent; due to the transparent smoothness of the writing film, the time for shaping and drying the writing ink on the surface is long, and the surface of the writing film can be damaged by overlarge acting force on the page film in the writing process; therefore, the first film layer and the second film layer arranged in the page film are matched with the diatomite and the high-water-absorptivity polyacrylic resin arranged in the filler, so that the ink absorption and shaping performance of the page film is enhanced, and the diatomite arranged between the first film layer and the second film layer has higher impact resistance and can bear the acting force of the page film in use and protect the second film layer from being damaged, so that the using effect of the transparent writing quick-drying page film is improved.
Description
Technical Field
The invention relates to the technical field of page films, in particular to a transparent writing quick-drying page film and a preparation method thereof.
Background
The page film is a film coated on a single page printed with characters or pictures, plays a role in protection, is formed by doping corresponding reactants in plastic particles and stretching and heat setting, is applied to a heat-seal label of a package, can be used for writing marks in real time, does not influence the observation of objects below the film layer, has excellent weather resistance and then has wide application range.
When writing the instrument and writing on the page membrane, rete self transparent smoothness characteristics, it is longer that its surface is write the dry time of printing ink design, need wait for the dry time of printing ink, and the quick circulation of the page membrane of being not convenient for is used, and the while is writing the in-process and can destroy its surface to the too big effort of page membrane, influences the label quality on the page membrane.
Some technical schemes related to a transparent writing quick-drying page film and a preparation method thereof also appear in the prior art, for example, a Chinese patent with the application number of 2008101986120 discloses a special master batch for BOPP synthetic paper and a preparation method thereof, and the master batch comprises the following components in percentage by weight: 27 to 40 percent of polypropylene resin, 58 to 70 percent of functional filler, 0.2 to 0.5 percent of antioxidant, 0.2 to 1 percent of lubricant, 0.2 to 0.5 percent of fluorescent whitening agent and 0.5 to 1.5 percent of titanium pigment. The special master batch for BOPP synthetic paper provided by the invention has good physical and mechanical properties and excellent barrier property, ensures that packaged articles do not deteriorate, has a pearlescent effect, is strong in decoration and good in printing property, and overcomes the problems of the traditional master batch two-step manufacturing method that a large amount of premix is needed, the production efficiency is low, a filter screen is easy to block when the master batch is extruded, the oil smoke is large, the membrane is easy to break and the like by adopting a multi-point side feeding design. The manufacturing method of the pearlescent synthetic paper master batch is simplified, the production efficiency is improved, the unit energy consumption is reduced, the quality of the master batch is greatly improved, and the pearlescent synthetic paper master batch has very important practical significance; however, in the technical scheme, the problem that the ink on the surface of the film layer can be shaped after being kept still for a period of time in the writing process is not solved, and the surface quality of the film layer can be damaged by overlarge acting force in the writing process, so that the using effect of the page film is influenced.
In view of the above, in order to overcome the above technical problems, the invention provides a transparent writing quick-drying page film and a preparation method thereof, and a special transparent writing quick-drying page film structure and a preparation method thereof are adopted, so that the technical problems are solved.
Disclosure of Invention
In order to make up for the defects of the prior art, the invention provides a transparent writing quick-drying page film and a preparation method thereof.
The invention relates to a transparent writing quick-drying page film which comprises the following components in parts by weight: polypropylene tree20-30 parts of grease, 15-20 parts of acrylic acid, 6-12 parts of diatomite, 5-9 parts of starch, 3-7 parts of acrylamide, 2-4 parts of calcium carbonate and 3-4 parts of an auxiliary agent; 60-70% of the polypropylene resin is used as a first film layer, and the specific gravity of the first film layer is 0.76-0.85g/cm3(ii) a The rest of the polypropylene resin is used as a second film layer, and the specific gravity of the second film layer is 0.68-0.77g/cm3(ii) a The acrylic acid, the acrylamide and the starch react under the action of the auxiliary agent to generate polyacrylic resin with high water absorption, and the polyacrylic resin is arranged on the first film layer and serves as the writing surface of the page film; the diatomite is divided into two parts, wherein one part is mixed in the polypropylene resin material, and the other part is pressed between the first film layer and the second film layer; the auxiliary agent comprises a cross-linking agent and an initiator;
when the book page film is used, a writing tool writes on the page film, due to the characteristic of transparency and smoothness of a film layer, the time for setting and drying the writing ink on the surface is long, the time for drying the writing ink needs to be waited, the page film is inconvenient to rapidly circulate and use, and meanwhile, the surface of the page film can be damaged by overlarge acting force on the page film in the writing process, so that the quality of a label on the page film is influenced; therefore, the polyacrylic resin arranged on the first film layer increases the water adsorption capacity in the writing ink, the diatomite with larger pore volume is mixed into the polypropylene resin material, the specific gravity of the page film is reduced, the two layers of the first film layer and the second film layer with different specific gravities are arranged in the page film, when the structure of the first film layer is damaged in the writing process, the water in the ink permeates into the second film layer, the capillary adsorption effect of the water in the ink on the second film layer is enhanced through the pressed diatomite layer, the drying time after the permeation of the writing ink is further shortened, the structure of the second film layer with lower specific gravity is stabilized, and the trace of the writing ink is quickly dried and shaped; according to the book page film, the first film layer and the second film layer which are arranged in the book page film are utilized, the specific gravity value of the second film layer at the bottom is used as the buffer of the first film layer in the writing process, meanwhile, the diatomite arranged in the filler is matched with the polyacrylic resin with high water absorption on the surface of the first film layer, the absorption and shaping performance of the book page film on ink is enhanced, the specific gravity value of the book page film is reduced, the diatomite arranged between the first film layer and the second film layer has high impact resistance strength and can bear the acting force in the use of the book page film, the second film layer is protected from being damaged, and the expansion change caused by the moisture of the ink between the first film layer and the second film layer is reduced, so that the using effect of the transparent writing quick-drying book page film is improved.
Preferably, the initiator is ammonium persulfate, and the acrylic acid, the acrylamide, the starch, the cross-linking agent and the ammonium persulfate are reacted according to the mass ratio of 1:1.2:6:3:0.5-1:1.5:7:3.5: 0.5; the simple substance of the acrylic acid is controlled below 10 ℃ before use; respectively mixing the ammonium persulfate and the starch with acrylic acid and acrylamide under the action of adding a cross-linking agent, reacting at 50-60 ℃ for 140-160min after mixing to prepare the polyacrylic resin with high water absorbability; when the writing ink is used, the water absorption performance of the polyacrylic resin is related to the shaping effect of the page film on the writing ink, and meanwhile, the acrylic acid is used as strong organic acid and can generate different reaction state effects with the contacted reactant, so that the balance of the performance of the polypropylene resin is influenced; acrylic acid is controlled to be below 10 ℃, so that the acrylic acid is mixed in a solid crystal state, and is heated in the mixing process, so that the acrylic acid and an additive are in a balanced reaction process, the quality of the prepared polyacrylic resin is further stabilized, the absorption performance of the polyacrylic resin to the moisture of writing ink is maintained, and the using effect of the transparent writing quick-drying page film is improved.
Preferably, the preparation steps of the polyacrylic resin are as follows:
s1, neutralization: adding solid acrylic acid crystals into a reaction container, then adding a sodium hydroxide aqueous solution with the mass concentration of 15-25%, heating the reaction container in the process of adding the sodium hydroxide solution, controlling the temperature to gradually rise to 35 ℃ until the pH value of the mixed solution is 6.4-6.8; the neutralization of acrylic acid is achieved;
s2, gelatinization: weighing required amount of starch, stirring and mixing the starch with deionized water to form suspension, and storing the gelatinized starch solution at the temperature of 40-50 ℃;
s3, copolymerization: adding acrylamide into acrylic acid neutralizing liquid of S1, adding gelatinized starch solution prepared in S2, titrating and adding ammonium persulfate aqueous solution with corresponding amount after reacting for 10min, reacting for 1-2h under stirring, placing the product in an oven for drying, and crushing the product to obtain the required polyacrylic resin;
when the transparent writing quick-drying book page film is used, acrylic acid is neutralized to control the reaction heat release speed, the temperature is controlled to be below 30 ℃ to avoid self-polymerization of sodium acrylate monomers neutralized by sodium hydroxide solution at a high temperature, carboxyl of amino acid in starch is polymerized into polar groups of polyacrylic resin under the action of initiator ammonium persulfate, the hydrophilic capability of writing ink is enhanced, dried particles participate in the process of preparing the polypropylene resin, the polymerization stability between a first film layer and the high-water-absorption polyacrylic resin is ensured, and the using effect of the transparent writing quick-drying book page film is improved.
Preferably, the thickness ratio of the first film layer to the second film layer is 1:1.3-1: 1.8; the surface of the second film layer facing the first film layer is subjected to sand blasting treatment, and the grain diameter of abrasive materials subjected to sand blasting is 20-38 mu m; the particle size of the diatomite is 33-48 mu m; when the book page film is used, the book page film prepared from the polypropylene resin belongs to a smooth surface, and the distribution state of diatomite between the first film layer and the second film layer is difficult to stably press fit, so that when the writing ink with the damaged first film layer permeates into the second film layer, the writing ink slides with the diatomite to form folds between the film layers, and the use of the book page film is influenced; through the sand blasting treatment to the second rete, increase the roughness of its smooth surface to control the big or small relation between sandblast abrasive material and diatomaceous earth particle diameter, strengthen the space adsorption efficiency under writing printing ink moisture effect between them, the pressfitting state between the second rete surface of cooperation diatomaceous earth and sand blasting treatment ensures the stable state of first rete after being lacerated in the page membrane, maintains the performance of page membrane, thereby has promoted the result of use of transparent quick-drying page membrane of writing.
Preferably, 18-25% of the weight part of the acrylic acid component is left, and the acrylic acid component is respectively coated on the surfaces of the polypropylene resin and the polyacrylic acid resin under the state of being heated to 28-35 ℃; when the prepared book page film is used, the light transmittance of an interface of the prepared book page film is weakened under the action of a multilayer structure of polypropylene resin, diatomite and polyacrylic resin, and the using effect of the book page film is further influenced; acrylic acid is directly coated on each material layer, and the performance of acrylic acid belonging to strong organic acid is utilized to display the large granularity of diatomite in the coating on the surface of the film layer, so that the extinction performance of the coating is exerted, the light transmittance of the page film is recovered, and the using effect of the transparent writing quick-drying page film is improved.
The invention relates to a preparation method of a transparent writing quick-drying page film, which is suitable for the transparent writing quick-drying page film and comprises the following steps:
I. extruding: respectively adding raw materials of polypropylene resin and polyacrylic resin into hot melting machines with different temperature parameters, and extruding and processing the raw materials into film layers with different thicknesses according to different set parameters; aiming at different melting point performances of the polypropylene resin and the polyacrylic resin, the performance effect of the processing film layer is respectively exerted by hot melting;
II. Stretching: performing biaxial stretching on the film extruded in the step I, placing the stretched thicker film below 0 ℃ for sand blasting, and naturally recovering to a room temperature state to obtain a second film layer of the book page; the hardness of the film layer is improved at low temperature, and the treatment effect of abrasive particles on the surface of the film in the sand blasting process is maintained;
III, polymerization: mixing the stretched polyacrylic resin film in the step II with a polypropylene resin film which is not subjected to sand blasting treatment for addition polymerization reaction, and polymerizing the polyacrylic resin on the surface of the polypropylene resin to form a writing surface of the first film layer of the page film;
IV, metering: measuring the required diatomite component according to the thickness of the stretched film layer in the step II, drying and heating to 80 ℃ for 20min, placing in a closed container for cooling, and carrying out 300-mesh vibration screening after the temperature is reduced to 40 ℃; drying the diatomite to remove water in the diatomite so as to maintain the contact effect between the diatomite and each membrane layer in the page membrane and keep the adsorption performance on the writing ink;
v, pressing: adding the diatomite screened in the step IV into a space between a first film layer polymerized in the step III and a second film layer subjected to stretching sand blasting in the step II, controlling the laminating temperature of the first film layer to be in a range of 110-; the first film layer and the second film layer have the best pressing temperature state for the diatomite by adopting different temperatures for the pressed page films and matching different melting point performance parameters of the polyacrylic resin and the polypropylene resin.
The invention has the following beneficial effects:
1. according to the invention, the first film layer and the second film layer are arranged in the page film, the second film layer is used as the buffer of the first film layer in the writing process, meanwhile, the diatomite arranged in the filler is matched with the polyacrylic resin with high water absorption on the surface of the first film layer, so that the ink absorption and shaping performance of the page film is enhanced, the diatomite arranged between the first film layer and the second film layer protects the second film layer from being damaged, and the expansion change caused by ink moisture between the first film layer and the second film layer is reduced.
2. The invention controls the temperature of acrylic acid below 10 ℃ to mix the acrylic acid in a solid crystal state, and heats the acrylic acid in the mixing process to ensure that the acrylic acid and the additives are in a balanced reaction process; performing sand blasting treatment on the second film layer to increase the roughness of the smooth surface of the second film layer and stabilize the pressing state between the diatomite and the surface of the sand blasted second film layer; acrylic acid is directly coated on each material layer, and the performance of the acrylic acid which belongs to strong organic acid is utilized to show the large granularity of diatomite in the coating on the surface of the film layer, so that the extinction performance of the diatomite is exerted.
Drawings
The invention is further described with reference to the following figures and embodiments.
FIG. 1 is a flow chart of a method for preparing a transparent writing quick-drying sheet film according to the present invention;
FIG. 2 is a flow chart showing the steps of preparing the polyacrylic resin of the present invention.
Detailed Description
In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.
As shown in fig. 1-2, the transparent writing quick-drying page film comprises the following components in parts by weight: 20-30 parts of polypropylene resin, 15-20 parts of acrylic acid, 6-12 parts of diatomite, 5-9 parts of starch, 3-7 parts of acrylamide, 2-4 parts of calcium carbonate and 3-4 parts of an auxiliary agent; 60-70% of the polypropylene resin is used as a first film layer, and the specific gravity of the first film layer is 0.76-0.85g/cm3(ii) a The rest of the polypropylene resin is used as a second film layer, and the specific gravity of the second film layer is 0.68-0.77g/cm3(ii) a The acrylic acid, the acrylamide and the starch react under the action of the auxiliary agent to generate polyacrylic resin with high water absorption, and the polyacrylic resin is arranged on the first film layer and serves as the writing surface of the page film; the diatomite is divided into two parts, wherein one part is mixed in the polypropylene resin material, and the other part is pressed between the first film layer and the second film layer; the auxiliary agent comprises a cross-linking agent and an initiator;
when the book page film is used, a writing tool writes on the page film, due to the characteristic of transparency and smoothness of a film layer, the time for setting and drying the writing ink on the surface is long, the time for drying the writing ink needs to be waited, the page film is inconvenient to rapidly circulate and use, and meanwhile, the surface of the page film can be damaged by overlarge acting force on the page film in the writing process, so that the quality of a label on the page film is influenced; therefore, the polyacrylic resin arranged on the first film layer increases the water adsorption capacity in the writing ink, the diatomite with larger pore volume is mixed into the polypropylene resin material, the specific gravity of the page film is reduced, the two layers of the first film layer and the second film layer with different specific gravities are arranged in the page film, when the structure of the first film layer is damaged in the writing process, the water in the ink permeates into the second film layer, the capillary adsorption effect of the water in the ink on the second film layer is enhanced through the pressed diatomite layer, the drying time after the permeation of the writing ink is further shortened, the structure of the second film layer with lower specific gravity is stabilized, and the trace of the writing ink is quickly dried and shaped; according to the book page film, the first film layer and the second film layer which are arranged in the book page film are utilized, the specific gravity value of the second film layer at the bottom is used as the buffer of the first film layer in the writing process, meanwhile, the diatomite arranged in the filler is matched with the polyacrylic resin with high water absorption on the surface of the first film layer, the absorption and shaping performance of the book page film on ink is enhanced, the specific gravity value of the book page film is reduced, the diatomite arranged between the first film layer and the second film layer has high impact resistance strength and can bear the acting force in the use of the book page film, the second film layer is protected from being damaged, and the expansion change caused by the moisture of the ink between the first film layer and the second film layer is reduced, so that the using effect of the transparent writing quick-drying book page film is improved.
According to one embodiment of the invention, the initiator is ammonium persulfate, and acrylic acid, acrylamide, starch, a cross-linking agent and the ammonium persulfate are reacted at a mass ratio of 1:1.2:6:3:0.5-1:1.5:7:3.5: 0.5; the simple substance of the acrylic acid is controlled below 10 ℃ before use; respectively mixing the ammonium persulfate and the starch with acrylic acid and acrylamide under the action of adding a cross-linking agent, reacting at 50-60 ℃ for 140-160min after mixing to prepare the polyacrylic resin with high water absorbability; when the writing ink is used, the water absorption performance of the polyacrylic resin is related to the shaping effect of the page film on the writing ink, and meanwhile, the acrylic acid is used as strong organic acid and can generate different reaction state effects with the contacted reactant, so that the balance of the performance of the polypropylene resin is influenced; acrylic acid is controlled to be below 10 ℃, so that the acrylic acid is mixed in a solid crystal state, and is heated in the mixing process, so that the acrylic acid and an additive are in a balanced reaction process, the quality of the prepared polyacrylic resin is further stabilized, the absorption performance of the polyacrylic resin to the moisture of writing ink is maintained, and the using effect of the transparent writing quick-drying page film is improved.
In one embodiment of the present invention, the polyacrylic acid resin is prepared by the following steps:
s1, neutralization: adding solid acrylic acid crystals into a reaction container, then adding a sodium hydroxide aqueous solution with the mass concentration of 15-25%, heating the reaction container in the process of adding the sodium hydroxide solution, controlling the temperature to gradually rise to 35 ℃ until the pH value of the mixed solution is 6.4-6.8; the neutralization of acrylic acid is achieved;
s2, gelatinization: weighing required amount of starch, stirring and mixing the starch with deionized water to form suspension, and storing the gelatinized starch solution at the temperature of 40-50 ℃;
s3, copolymerization: adding acrylamide into acrylic acid neutralizing liquid of S1, adding gelatinized starch solution prepared in S2, titrating and adding ammonium persulfate aqueous solution with corresponding amount after reacting for 10min, reacting for 1-2h under stirring, placing the product in an oven for drying, and crushing the product to obtain the required polyacrylic resin;
when the transparent writing quick-drying book page film is used, acrylic acid is neutralized to control the reaction heat release speed, the temperature is controlled to be below 30 ℃ to avoid self-polymerization of sodium acrylate monomers neutralized by sodium hydroxide solution at a high temperature, carboxyl of amino acid in starch is polymerized into polar groups of polyacrylic resin under the action of initiator ammonium persulfate, the hydrophilic capability of writing ink is enhanced, dried particles participate in the process of preparing the polypropylene resin, the polymerization stability between a first film layer and the high-water-absorption polyacrylic resin is ensured, and the using effect of the transparent writing quick-drying book page film is improved.
As an embodiment of the present invention, the thickness ratio of the first film layer to the second film layer is 1:1.3 to 1: 1.8; the surface of the second film layer facing the first film layer is subjected to sand blasting treatment, and the grain diameter of abrasive materials subjected to sand blasting is 20-38 mu m; the particle size of the diatomite is 33-48 mu m; when the book page film is used, the book page film prepared from the polypropylene resin belongs to a smooth surface, and the distribution state of diatomite between the first film layer and the second film layer is difficult to stably press fit, so that when the writing ink with the damaged first film layer permeates into the second film layer, the writing ink slides with the diatomite to form folds between the film layers, and the use of the book page film is influenced; through the sand blasting treatment to the second rete, increase the roughness of its smooth surface to control the big or small relation between sandblast abrasive material and diatomaceous earth particle diameter, strengthen the space adsorption efficiency under writing printing ink moisture effect between them, the pressfitting state between the second rete surface of cooperation diatomaceous earth and sand blasting treatment ensures the stable state of first rete after being lacerated in the page membrane, maintains the performance of page membrane, thereby has promoted the result of use of transparent quick-drying page membrane of writing.
As an embodiment of the present invention, 18 to 25% by weight of the acrylic acid component is left, and is heated to 28 to 35 ℃ and is coated on the surfaces of the polypropylene resin and the polyacrylic acid resin, respectively; when the prepared book page film is used, the light transmittance of an interface of the prepared book page film is weakened under the action of a multilayer structure of polypropylene resin, diatomite and polyacrylic resin, and the using effect of the book page film is further influenced; acrylic acid is directly coated on each material layer, and the performance of acrylic acid belonging to strong organic acid is utilized to display the large granularity of diatomite in the coating on the surface of the film layer, so that the extinction performance of the coating is exerted, the light transmittance of the page film is recovered, and the using effect of the transparent writing quick-drying page film is improved.
The invention relates to a preparation method of a transparent writing quick-drying page film, which is suitable for the transparent writing quick-drying page film and comprises the following steps:
I. extruding: respectively adding raw materials of polypropylene resin and polyacrylic resin into hot melting machines with different temperature parameters, and extruding and processing the raw materials into film layers with different thicknesses according to different set parameters; aiming at different melting point performances of the polypropylene resin and the polyacrylic resin, the performance effect of the processing film layer is respectively exerted by hot melting;
II. Stretching: performing biaxial stretching on the film extruded in the step I, placing the stretched thicker film below 0 ℃ for sand blasting, and naturally recovering to a room temperature state to obtain a second film layer of the book page; the hardness of the film layer is improved at low temperature, and the treatment effect of abrasive particles on the surface of the film in the sand blasting process is maintained;
III, polymerization: mixing the stretched polyacrylic resin film in the step II with a polypropylene resin film which is not subjected to sand blasting treatment for addition polymerization reaction, and polymerizing the polyacrylic resin on the surface of the polypropylene resin to form a writing surface of the first film layer of the page film;
IV, metering: measuring the required diatomite component according to the thickness of the stretched film layer in the step II, drying and heating to 80 ℃ for 20min, placing in a closed container for cooling, and carrying out 300-mesh vibration screening after the temperature is reduced to 40 ℃; drying the diatomite to remove water in the diatomite so as to maintain the contact effect between the diatomite and each membrane layer in the page membrane and keep the adsorption performance on the writing ink;
v, pressing: adding the diatomite screened in the step IV into a space between a first film layer polymerized in the step III and a second film layer subjected to stretching sand blasting in the step II, controlling the laminating temperature of the first film layer to be in a range of 110-; the first film layer and the second film layer have the best pressing temperature state for the diatomite by adopting different temperatures for the pressed page films and matching different melting point performance parameters of the polyacrylic resin and the polypropylene resin.
When the page film is used, the polyacrylic resin arranged on the first film layer is used for increasing the water adsorption capacity in writing ink, diatomite with larger pore volume is mixed into a polypropylene resin material, the specific gravity of the page film is reduced, the two layers of the first film layer and the second film layer with different specific gravities are arranged in the page film, so that when the structure of the first film layer is damaged in the writing process, water in the ink permeates into the second film layer, the capillary adsorption effect of the ink water on the second film layer is enhanced through the pressed diatomite layer, the drying time after the permeation of the writing ink is further shortened, the structure of the second film layer with lower specific gravity is stabilized, and the trace of the writing ink is quickly dried and shaped; controlling the temperature of acrylic acid below 10 ℃ to mix the acrylic acid in a solid crystal state, heating the acrylic acid in the mixing process to ensure that the acrylic acid and the additive are in a balanced reaction process, and further stabilizing the quality of the prepared polyacrylic resin and maintaining the water absorption performance of the polyacrylic resin on writing ink; acrylic acid is neutralized to control the exothermic speed of the reaction, the temperature is controlled below 30 ℃ to avoid self-polymerization of sodium acrylate monomers neutralized by sodium hydroxide solution at high temperature, carboxyl of amino acid in starch is polymerized into polar groups of polyacrylic resin under the action of initiator ammonium persulfate, the hydrophilic capability to writing ink is enhanced, and dried particles participate in the process of preparing the polypropylene resin, so that the polymerization stability between a first membrane layer and the high-water-absorptivity polyacrylic resin is ensured; the second film layer is subjected to sand blasting treatment, so that the roughness of the smooth surface of the second film layer is increased, the size relation between a sand blasting abrasive and the particle size of diatomite is controlled, the adsorption performance of gaps between the second film layer and the diatomite under the action of water of writing ink is enhanced, the stable state of the first film layer in the book page film after being scratched is ensured by matching with the pressing state between the diatomite and the surface of the sand blasting treated second film layer, and the use performance of the book page film is maintained; acrylic acid is directly coated on each material layer, and the performance of the acrylic acid which belongs to strong organic acid is utilized to show the large granularity of diatomite in the coating on the surface of the film layer, so that the extinction performance of the diatomite is exerted, and the light transmittance of the book page film is recovered.
Providing the transparent writing quick-drying page film to a page film manufacturer, respectively producing page films of different materials by the manufacturer and a method of the manufacturer, carrying out a writing experiment on the page films, then carrying out a water absorption performance test, and carrying out a test by taking 10 page films as a group; the page film, the page film and the method have the advantages that diatomite layers are removed, a second film layer is removed, a page film finished product of a certain outsourcing brand and a page film produced by an original factory are removed, the writing ink state of the page film surface is wiped under the condition that the page film is in a writing experiment at different time, and the quality of absorbed water removed after the page film is immersed in water for different time after the writing experiment is finished is recorded;
experimental group 1, using the leaf membrane of the present invention:
experiment group 2, the diatomite layer was removed using the leaf membrane of the present invention:
experiment group 3, the second membrane layer was removed using the page membrane of the present invention:
experimental group 4, using a commercially available brand of the leaf membrane:
experimental group 5, using the page film produced by the original factory:
according to the results recorded by the experimental groups, the page film provided by the invention, the diatomite layer, the second film layer, a page film finished product of a certain outsourcing brand and a page film produced by a factory are removed, the writing ink state on the surface of the page film is wiped after different time in a writing experiment, and the quality of absorbed water removed after the page film is immersed in water for different time after the writing experiment is finished, have different results; the page film is used as a reference, the diatomite layer is removed by using the page film, the quick-drying performance of the ink is slightly enhanced, and the water absorption performance is greatly weakened; the second film layer is removed by using the page film, so that the quick-drying performance of the ink is weakened, but the water absorption rate in the water absorption performance of the page film is slightly improved; the finished product of the page film of a certain outsourcing brand is used, the fast drying performance to the ink in the first 3s is poor, and the fast drying performance to the ink after 5s is equal to that of the page film in the invention, but the water absorption rate is low; the book page film produced by a factory has quick-drying performance on ink which is only superior to that of the book page film produced by the factory without a second film layer, and has slightly weaker water absorption performance within the first 3s than that of the book page film produced by the factory, so that the book page film has relatively best effects on the quick-drying performance and the water absorption capacity of the writing ink.
The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (6)
1. The utility model provides a transparent quick-drying page membrane of writing which characterized in that: the paint comprises the following components in parts by weight: 20-30 parts of polypropylene resin, 15-20 parts of acrylic acid, 6-12 parts of diatomite, 5-9 parts of starch, 3-7 parts of acrylamide, 2-4 parts of calcium carbonate and 3-4 parts of an auxiliary agent; 60-70% of the polypropylene resin is used as a first film layer, and the specific gravity of the first film layer is 0.76-0.85g/cm3(ii) a The rest of the polypropylene resin is used as a second film layer, and the specific gravity of the second film layer is 0.68-0.77g/cm3(ii) a The acrylic acid, the acrylamide and the starch react under the action of the auxiliary agent to generate polyacrylic resin with high water absorption, and the polyacrylic resin is arranged on the first film layer and serves as the writing surface of the page film; the diatomite is divided into two parts, wherein one part is mixed in the polypropylene resin material, and the other part is pressed between the first film layer and the second film layer; the auxiliary agent comprises a cross-linking agent and an initiator.
2. The transparent writing quick-drying page film according to claim 1, characterized in that: the initiator is ammonium persulfate, and acrylic acid, acrylamide, starch, a cross-linking agent and the ammonium persulfate are reacted according to the mass ratio of 1:1.2:6:3:0.5-1:1.5:7:3.5: 0.5; the simple substance of the acrylic acid is controlled below 10 ℃ before use; and respectively mixing the ammonium persulfate and the starch with acrylic acid and acrylamide under the action of adding a cross-linking agent, and reacting at 50-60 ℃ for 140-160min to obtain the polyacrylic resin with high water absorbability.
3. The transparent writing quick-drying page film as claimed in claim 2, wherein: the preparation steps of the polyacrylic resin are as follows:
s1, neutralization: adding solid acrylic acid crystals into a reaction container, then adding a sodium hydroxide aqueous solution with the mass concentration of 15-25%, heating the reaction container in the process of adding the sodium hydroxide solution, controlling the temperature to gradually rise to 35 ℃ until the pH value of the mixed solution is 6.4-6.8; the neutralization of acrylic acid is achieved;
s2, gelatinization: weighing required amount of starch, stirring and mixing the starch with deionized water to form suspension, and storing the gelatinized starch solution at the temperature of 40-50 ℃;
s3, copolymerization: adding acrylamide into acrylic acid neutralizing liquid of S1, adding gelatinized starch solution prepared in S2, titrating and adding ammonium persulfate aqueous solution with corresponding amount after reacting for 10min, reacting for 1-2h under stirring, placing the product in an oven for drying, and crushing the product to obtain the required polyacrylic resin.
4. The transparent writing quick-drying page film according to claim 1, wherein; the thickness ratio of the first film layer to the second film layer is 1:1.3-1: 1.8; the surface of the second film layer facing the first film layer is subjected to sand blasting treatment, and the grain diameter of abrasive materials subjected to sand blasting is 20-38 mu m; the particle size of the diatomite is 33-48 mu m.
5. The transparent writing quick-drying page film according to claim 1, characterized in that: 18-25% of the acrylic acid component is left, and the acrylic acid component is respectively coated on the surfaces of the polypropylene resin and the polyacrylic acid resin under the state of being heated to 28-35 ℃.
6. A preparation method of a transparent quick-drying writing page film is characterized by comprising the following steps: the preparation method is suitable for the transparent writing quick-drying page film as defined in any one of claims 1 to 5, and comprises the following steps:
I. extruding: respectively adding raw materials of polypropylene resin and polyacrylic resin into hot melting machines with different temperature parameters, and extruding and processing the raw materials into film layers with different thicknesses according to different set parameters;
II. Stretching: performing biaxial stretching on the film extruded in the step I, placing the stretched thicker film below 0 ℃ for sand blasting, and naturally recovering to a room temperature state to obtain a second film layer of the book page;
III, polymerization: mixing the stretched polyacrylic resin film in the step II with a polypropylene resin film which is not subjected to sand blasting treatment for addition polymerization reaction, and polymerizing the polyacrylic resin on the surface of the polypropylene resin to form a writing surface of the first film layer of the page film;
IV, metering: measuring the required diatomite component according to the thickness of the stretched film layer in the step II, drying and heating to 80 ℃ for 20min, placing in a closed container for cooling, and carrying out 300-mesh vibration screening after the temperature is reduced to 40 ℃;
v, pressing: and adding the diatomite screened in the step IV into a space between the first film layer polymerized in the step III and the second film layer subjected to stretching sand blasting in the step II, controlling the laminating temperature of the first film layer to be in a range of 110-.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114292468A (en) * | 2022-01-29 | 2022-04-08 | 山东凯大新型材料科技有限公司 | Preparation method of novel ink adsorption packaging material |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2157872Y (en) * | 1993-03-20 | 1994-03-02 | 熊明山 | Repeatedly-usable textbook for writing with writing brush |
| CN104448142A (en) * | 2013-09-20 | 2015-03-25 | 朱凌嘉 | High water-absorption resin |
| CN105175635A (en) * | 2015-10-09 | 2015-12-23 | 北京东泰富博新材料科技股份有限公司 | Starch water-retaining agent containing diatomaceous earth and preparation and application thereof |
| CN110511641A (en) * | 2019-09-23 | 2019-11-29 | 厦门长塑实业有限公司 | A kind of BOPA pre-coating film and preparation method thereof enhancing UV ink adhesion |
| CN211394343U (en) * | 2018-11-21 | 2020-09-01 | 张家港保税区康得菲尔实业有限公司 | Matte pre-coating film with surface writing function |
| CN112062996A (en) * | 2020-09-14 | 2020-12-11 | 无锡和烁丰新材料有限公司 | Transparent writing quick-drying page film and preparation method thereof |
-
2020
- 2020-12-23 CN CN202011536648.2A patent/CN112622358A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2157872Y (en) * | 1993-03-20 | 1994-03-02 | 熊明山 | Repeatedly-usable textbook for writing with writing brush |
| CN104448142A (en) * | 2013-09-20 | 2015-03-25 | 朱凌嘉 | High water-absorption resin |
| CN105175635A (en) * | 2015-10-09 | 2015-12-23 | 北京东泰富博新材料科技股份有限公司 | Starch water-retaining agent containing diatomaceous earth and preparation and application thereof |
| CN211394343U (en) * | 2018-11-21 | 2020-09-01 | 张家港保税区康得菲尔实业有限公司 | Matte pre-coating film with surface writing function |
| CN110511641A (en) * | 2019-09-23 | 2019-11-29 | 厦门长塑实业有限公司 | A kind of BOPA pre-coating film and preparation method thereof enhancing UV ink adhesion |
| CN112062996A (en) * | 2020-09-14 | 2020-12-11 | 无锡和烁丰新材料有限公司 | Transparent writing quick-drying page film and preparation method thereof |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114292468A (en) * | 2022-01-29 | 2022-04-08 | 山东凯大新型材料科技有限公司 | Preparation method of novel ink adsorption packaging material |
| CN114292468B (en) * | 2022-01-29 | 2022-10-28 | 山东凯大新型材料科技有限公司 | Preparation method of ink adsorption packaging material |
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