CN115450066A - Ink-jet synthetic paper and manufacturing method thereof - Google Patents
Ink-jet synthetic paper and manufacturing method thereof Download PDFInfo
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- CN115450066A CN115450066A CN202211335626.9A CN202211335626A CN115450066A CN 115450066 A CN115450066 A CN 115450066A CN 202211335626 A CN202211335626 A CN 202211335626A CN 115450066 A CN115450066 A CN 115450066A
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- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H19/00—Coated paper; Coating material
- D21H19/80—Paper comprising more than one coating
- D21H19/82—Paper comprising more than one coating superposed
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- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
- D21H17/20—Macromolecular organic compounds
- D21H17/33—Synthetic macromolecular compounds
- D21H17/46—Synthetic macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- D21H17/54—Synthetic macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds obtained by reactions forming in the main chain of the macromolecule a linkage containing nitrogen
- D21H17/57—Polyureas; Polyurethanes
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- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H21/00—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties
- D21H21/06—Paper forming aids
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- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H21/00—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties
- D21H21/06—Paper forming aids
- D21H21/12—Defoamers
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W90/00—Enabling technologies or technologies with a potential or indirect contribution to greenhouse gas [GHG] emissions mitigation
- Y02W90/10—Bio-packaging, e.g. packing containers made from renewable resources or bio-plastics
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Abstract
The invention discloses ink-jet synthetic paper and a manufacturing method thereof, wherein the ink-jet synthetic paper comprises a BOPP substrate layer, wherein a substrate connecting layer is arranged on the BOPP substrate layer, and an ink absorbing layer is arranged on the substrate connecting layer; the substrate tie layer comprises a hydroxyl polyurethane emulsion: 60-80 parts of water-based curing agent: 20-40 parts of wetting agent: 0.5-1.5 parts of polyether defoamer: 0.3-0.5 part; the ink absorbing layer comprises vinyl acetate-acrylic acid copolymer emulsion: 35-55 parts of superfine precipitated hydrated silica: 25-45 parts of; the base material is primed by the double-component coating, so that the ink absorbing layer is firmly combined with the base material, the coating of the product is firmer, the ink absorbing layer uses the vinyl acetate-acrylic acid copolymer emulsion with large particle size, the vinyl acetate-acrylic acid copolymer emulsion is interwoven with the silicon dioxide particles to form a mesh structure after being dried, the ink jet absorption speed is higher, the drying efficiency is favorably improved, the polyglycolic acid high polymer is used for the ink absorbing layer, the bonding strength is good after coating and drying, and the influence on the ink absorption capacity is smaller.
Description
Technical Field
The invention belongs to the technical field of ink-jet synthetic paper, and particularly relates to ink-jet synthetic paper and a manufacturing method thereof.
Background
The application of ink-jet printing technology has been in various fields of life, and the development of advertising consumables makes different choices for materials required in different places of use. In addition to the paper-based inkjet printing paper used for a long time, there is also a demand for inkjet printing synthetic paper of a film substrate, which is generally made by coating a BOPP substrate with an inkjet functional coating, and unlike inkjet printing paper, the film substrate itself is difficult to be firmly bonded to the coating, and the film itself has no absorptivity. The required ink-jet coating is significantly different from conventional ink-jet paper coating processes. Generally, it is necessary to coat a primer layer as a bonding layer between the ink-receptive coating and the substrate. And then one or more layers of ink-absorbing coatings are coated to achieve the function required by ink jet.
The existing synthetic paper ink-absorbing coating needs to fully absorb ink, achieve firm bonding of the coating and simultaneously meet the waterproof performance of the coating and an ink-jet pattern. Therefore, the selected materials and the proportion of the coating are optimized to achieve the optimal multifunctional function of the coating. The surface strength of the ink-absorbing coating is obviously insufficient in the current ink-jet synthetic paper products used in domestic markets, and the ink-absorbing capacity of the coating must be realized by depending on high coating weight. The reason for this is mainly because a large amount of silica having a high oil absorption value is used as an ink absorbing component in the coating layer, and in order to achieve good surface strength, PVA (polyvinyl alcohol) having a high molecular weight is basically used as an adhesive. A large amount of water-resistant resin emulsion is also required to meet the water resistance of the coating. The addition of PVA and resin emulsion significantly reduces the absorbency of the coating, and therefore only the coating weight can be increased to meet ink absorbency requirements. The disadvantages of this process are high cost of coating and low coating efficiency, so we propose an ink-jet synthetic paper and its manufacturing method.
Disclosure of Invention
The present invention is directed to an inkjet synthetic paper and a method for manufacturing the same, which solves the above problems.
In order to achieve the purpose, the invention provides the following technical scheme: the inkjet synthetic paper comprises a BOPP (biaxially-oriented Polypropylene) base material layer, wherein a base material connecting layer is arranged on the BOPP base material layer, and an ink absorbing layer is arranged on the base material connecting layer;
the substrate tie layer comprises a hydroxyl polyurethane emulsion: 60-80 parts of water-based curing agent: 20-40 parts of wetting agent: 0.5-1.5 parts of polyether defoamer: 0.3-0.5 part;
the ink-absorbing layer comprises vinyl acetate-acrylic acid copolymer emulsion: 35-55 parts of superfine precipitated hydrated silica: 25-45 parts of polyglycolic acid high molecular polymer: 5-15 parts of a color fixing agent: 5-10 parts of wetting agent: 0.5-1.5 parts of polyether defoamer: 0.3-0.6 part.
Preferably, the coating dry weight of the substrate connecting layer is 0.2-0.3g per square meter, and the coating dry weight of the ink absorbing layer is 20-30g per square meter.
Preferably, the particle size of the vinyl acetate-acrylic acid copolymer emulsion is 0.2-0.3 μm, the content of silicon dioxide in the superfine precipitated hydrated silicon dioxide is more than or equal to 99%, the pore volume is 1.4ml/g, the oil absorption value is 220-240g/100g, and the average particle size is 8-10 μm.
Preferably, the polyglycolic acid high molecular polymer: the polymer is a polyglycolic acid and acrylate network copolymer, and has the solid content: 25% and a pH of 5-9.
Preferably, the fixing agent is polycationic.
A method for manufacturing inkjet synthetic paper is characterized in that: the method comprises the following steps:
step a, selecting a BOPP film as a coating base material layer;
step b, preparing the base connecting layer coating and the dispersion liquid;
step c, preparing an ink absorption layer coating through the dispersion liquid;
and d, respectively driving the base layer connecting layer and the ink absorption layer into a trough of a coating machine, and sequentially coating the base material connecting layer and the ink absorption layer on the BOPP film.
Preferably, when the primer-tie layer coating is prepared in step b: adding water into a preparation tank, starting stirring, sequentially adding the hydroxyl polyurethane emulsion, the waterborne curing agent, the wetting agent and the polyether defoamer, and stirring at 300rpm for 25-35min;
during preparation of the dispersion: adding deionized water into the preparation tank, stirring, slowly adding silicon dioxide powder, and dispersing at 1500rpm for 100-140min to obtain silicon dioxide dispersion.
Preferably, when preparing the ink-absorbing layer coating in step c: adding water into the preparation tank, stirring, sequentially adding silicon dioxide dispersion, vinyl acetate-acrylic acid copolymer emulsion, polycation color fixing agent, polyglycolic acid high molecular polymer, wetting agent and polyether defoamer, and stirring at 300rpm for 55-65min.
Preferably, in step d, a wire bar coating is used.
Preferably, in the step d, when the substrate connecting layer and the ink absorbing layer are sequentially coated, each layer is produced by adopting a hot air drying mode and is wound.
Compared with the prior art, the invention has the beneficial effects that:
the base material is primed by the double-component coating, so that the ink absorbing layer is firmly combined with the base material, the coating of the product is firmer, the ink absorbing layer uses the vinyl acetate-acrylic acid copolymer emulsion with large particle size, and the dried vinyl acetate-acrylic acid copolymer emulsion is interwoven with silica particles to form a mesh structure, so that the ink jet absorption speed is higher, the drying efficiency is improved, the drying adhesive strength is increased, the required coating weight is reduced, the waterproof performance is excellent, the polyglycolic acid high polymer for the ink absorbing layer is good in adhesive strength after being coated and dried, meanwhile, the influence on the ink absorption capacity is smaller, and the practicability of the device is improved.
Drawings
FIG. 1 is a schematic diagram illustrating the effect of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to fig. 1 in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.
Example 1
The invention provides a technical scheme that: the inkjet synthetic paper comprises a BOPP (biaxially-oriented polypropylene) base material layer, wherein a base material connecting layer is arranged on the BOPP base material layer, and an ink absorbing layer is arranged on the base material connecting layer;
the substrate connecting layer comprises a hydroxyl polyurethane emulsion: 60 parts of water-based curing agent: 20 parts, which is convenient for improving the binding power and increasing the binding strength of the device, and the wetting agent: 0.5 part of polyether defoamer: 0.3 part;
the ink-absorbing layer comprises vinyl acetate-acrylic acid copolymer emulsion: 35 parts of ultrafine precipitated hydrated silica: 25 parts, facilitating better waterproof effect, polyglycolic acid high molecular polymer: 5 parts of a color fixing agent: 5 parts of dye, which is convenient for improving the moisture resistance and fastness effect of the dye after ink absorption, and a wetting agent: 0.5 part of polyether defoamer: 0.3 part, which is convenient for better waterproof effect.
Preferably, the coating dry weight of the substrate connecting layer is 0.2g per square meter, and the coating dry weight of the ink absorbing layer is 20g per square meter.
Preferably, the particle size of the vinyl acetate-acrylic acid copolymer emulsion is 0.2 mu m, the content of silicon dioxide in the superfine precipitated hydrated silicon dioxide is more than or equal to 99 percent, the superfine precipitated hydrated silicon dioxide is convenient to be better interwoven with silicon dioxide particles to form a mesh structure after being dried, the ink absorption and waterproof effects are improved, the pore volume is 1.4ml/g, the oil absorption value is 230g/100g, and the average particle size is 8 mu m.
Preferably, the polyglycolic acid high molecular polymer: the polymer is a polyglycolic acid and acrylate network copolymer, and has the solid content: 25% and a pH of 5.
Preferably, the fixing agent is a polycation.
A method for manufacturing inkjet synthetic paper, characterized in that: the method comprises the following steps:
step a, selecting a BOPP film as a coating base material layer;
step b, preparing the base connecting layer coating and the dispersion liquid;
step c, preparing an ink absorption layer coating through the dispersion liquid;
and d, respectively driving the base layer connecting layer and the ink absorption layer into a trough of a coating machine, and sequentially coating the base material connecting layer and the ink absorption layer on the BOPP film.
Preferably, when preparing the base tie layer coating in step b: adding water into a preparation tank, starting stirring, sequentially adding the hydroxyl polyurethane emulsion, the water-based curing agent, the wetting agent and the polyether defoamer, and stirring at 300rpm for 25min, so that the uniform mixing effect is improved conveniently;
during preparation of the dispersion: deionized water is added into the preparation tank, stirring is started, silicon dioxide powder is slowly added, so that silicon dioxide can be better dispersed, and the silicon dioxide is dispersed at a high speed of 1500rpm for 100min to prepare silicon dioxide dispersion liquid.
Preferably, when preparing the ink-absorbing layer coating in step c: adding water into the preparation tank, starting stirring, sequentially adding the silicon dioxide dispersion, the vinyl acetate-acrylic acid copolymer emulsion, the polycation color fixing agent, the polyglycolic acid high molecular polymer, the wetting agent and the polyether defoamer, stirring for 55min under the stirring condition of 300rpm, facilitating uniform mixing, and improving the ink absorption effect of the ink absorption layer.
Preferably, in step d, wire bar coating is adopted, so that the uniform coating effect of the device is increased.
Preferably, in the step d, when the substrate connecting layer and the ink absorbing layer are sequentially coated, each layer is produced in a hot air drying mode, so that a better drying effect is facilitated, and the roll is wound.
Example 2
The invention provides a technical scheme that: the inkjet synthetic paper comprises a BOPP (biaxially-oriented polypropylene) base material layer, wherein a base material connecting layer is arranged on the BOPP base material layer, and an ink absorbing layer is arranged on the base material connecting layer;
the substrate tie layer comprises a hydroxyl polyurethane emulsion: 80 parts of water-based curing agent: 40 parts of wetting agent: 1.5 parts of polyether defoamer: 0.5 part, which is convenient for better bonding effect and is easy to fix the ink absorbing layer;
the ink-absorbing layer comprises vinyl acetate-acrylic acid copolymer emulsion: 35 parts of ultrafine precipitated hydrated silica: 25 parts of polyglycolic acid high molecular polymer: 5 parts of a color fixing agent: 10 parts of wetting agent: 1.5 parts of polyether defoamer: 0.3 part, is convenient for increase the ink absorption of the device, and is easy to absorb and fix the ink during later ink jet.
Preferably, the substrate connecting layer is coated with a dry weight of 0.3g per square meter, and the ink absorbing layer is coated with a dry weight of 30g per square meter.
Preferably, the particle size of the vinyl acetate-acrylic acid copolymer emulsion is 0.2 mu m, the content of silicon dioxide in the superfine precipitated hydrated silicon dioxide is more than or equal to 99 percent, the pore volume is 1.4ml/g, the oil absorption value is 240g/100g, the average particle size is 10 mu m, and the better ink absorption effect is facilitated.
Preferably, the polyglycolic acid high molecular polymer: the polymer is a polyglycolic acid and acrylate network copolymer, and has the solid content: 25% and a pH of 9.
Preferably, the fixing agent is a polycation.
A method for manufacturing inkjet synthetic paper, characterized in that: the method comprises the following steps:
step a, selecting a BOPP film as a coating base material layer;
b, preparing the base connecting layer coating and the dispersion liquid;
step c, preparing an ink absorption layer coating through the dispersion liquid;
and d, respectively driving the base material layer connecting layer and the ink absorbing layer into a trough of the coating machine, and sequentially coating the base material connecting layer and the ink absorbing layer on the BOPP film, so that the ink absorbing layer is connected with the base material layer better.
Preferably, when the primer-tie layer coating is prepared in step b: adding water into a preparation tank, starting stirring, sequentially adding the hydroxyl polyurethane emulsion, the waterborne curing agent, the wetting agent and the polyether defoamer, and stirring at 300rpm for 35min, so as to improve the uniform mixing effect;
when the dispersion is prepared: deionized water is added into the preparation tank, stirring is started, silicon dioxide powder is slowly added, and high-speed dispersion is carried out at 1500rpm for 140min to prepare silicon dioxide dispersion liquid, so that the silicon dioxide can be better dispersed.
Preferably, when preparing the ink-absorbing layer coating in step c: adding water into the preparation tank, starting stirring, sequentially adding the silicon dioxide dispersion, the vinyl acetate-acrylic acid copolymer emulsion, the polycation color fixing agent, the polyglycolic acid high molecular polymer, the wetting agent and the polyether defoamer, stirring for 65min under the stirring condition of 300rpm, facilitating uniform mixing, and improving the ink absorption effect of the ink absorption layer.
Preferably, in step d, wire bar coating is used.
Preferably, in the step d, when the substrate connecting layer and the ink absorbing layer are sequentially coated, each layer is produced in a hot air drying mode, and is rolled, so that the production is facilitated, and the processing efficiency is improved.
Example 3
The invention provides a technical scheme that: the inkjet synthetic paper comprises a BOPP (biaxially-oriented polypropylene) base material layer, wherein a base material connecting layer is arranged on the BOPP base material layer, and an ink absorbing layer is arranged on the base material connecting layer;
the substrate connecting layer comprises a hydroxyl polyurethane emulsion: 60 parts of water-based curing agent: 40 parts of wetting agent: 1.5 parts of polyether defoamer: 0.5 part, which is convenient for better bonding effect and is easy to fix the ink absorbing layer;
the ink-absorbing layer comprises vinyl acetate-acrylic acid copolymer emulsion: 35 parts of ultrafine precipitated hydrated silica: 45 parts of polyglycolic acid high molecular polymer: 15 parts of a color fixing agent: 10 parts of wetting agent: 1.5 parts of polyether defoamer: 0.3 part, is convenient for increase the ink absorption of the device, and is easy to absorb and fix the ink during later ink jet.
Preferably, the coating dry weight of the substrate connecting layer is 0.3g per square meter, and the coating dry weight of the ink absorbing layer is 30g per square meter.
Preferably, the particle size of the vinyl acetate-acrylic acid copolymer emulsion is 0.3 mu m, the content of silicon dioxide in the superfine precipitated hydrated silicon dioxide is more than or equal to 99 percent, the pore volume is 1.4ml/g, the oil absorption value is 240g/100g, the average particle size is 10 mu m, and the better ink absorption effect is facilitated.
Preferably, the polyglycolic acid high molecular polymer: is polyglycolic acid and acrylate network copolymer, and has the following solid content: 25% and a pH of 9.
Preferably, the fixing agent is a polycation.
A method for manufacturing inkjet synthetic paper is characterized in that: the method comprises the following steps:
step a, selecting a BOPP film as a coating base material layer;
step b, preparing the base connecting layer coating and the dispersion liquid;
step c, preparing an ink absorption layer coating through the dispersion liquid;
and d, respectively driving the base material layer connecting layer and the ink absorbing layer into a trough of the coating machine, and sequentially coating the base material connecting layer and the ink absorbing layer on the BOPP film, so that the ink absorbing layer is connected with the base material layer better.
Preferably, when the primer-tie layer coating is prepared in step b: adding water into a preparation tank, starting stirring, sequentially adding the hydroxyl polyurethane emulsion, the water-based curing agent, the wetting agent and the polyether defoamer, and stirring at 300rpm for 35min, so that the uniform mixing effect is improved conveniently;
during preparation of the dispersion: deionized water is added into the preparation tank, stirring is started, silicon dioxide powder is slowly added, and high-speed dispersion is carried out at 1500rpm for 140min to prepare silicon dioxide dispersion liquid, so that the silicon dioxide can be better dispersed.
Preferably, when preparing the ink-absorbing layer coating in step c: adding water into the preparation tank, starting stirring, sequentially adding the silicon dioxide dispersion, the vinyl acetate-acrylic acid copolymer emulsion, the polycation color fixing agent, the polyglycolic acid high molecular polymer, the wetting agent and the polyether defoamer, stirring for 65min under the stirring condition of 300rpm, facilitating uniform mixing, and improving the ink absorption effect of the ink absorption layer.
Preferably, in step d, wire bar coating is used.
Preferably, in the step d, when the substrate connecting layer and the ink absorbing layer are sequentially coated, each layer is produced in a hot air drying mode, and is rolled, so that the production is facilitated, and the processing efficiency is improved.
Example 4
The invention provides a technical scheme that: the inkjet synthetic paper comprises a BOPP (biaxially-oriented polypropylene) base material layer, wherein a base material connecting layer is arranged on the BOPP base material layer, and an ink absorbing layer is arranged on the base material connecting layer;
the substrate tie layer comprises a hydroxyl polyurethane emulsion: 80 parts of water-based curing agent: 40 parts of wetting agent: 1.5 parts of polyether defoamer: 0.5 part, which is convenient for better bonding effect and is easy for fixing the ink absorbing layer;
the ink absorbing layer comprises vinyl acetate-acrylic acid copolymer emulsion: 55 parts of ultrafine precipitated hydrated silica: 45 parts of polyglycolic acid high molecular polymer: 15 parts of a color fixing agent: 10 parts of wetting agent: 1.5 parts of polyether defoamer: and 0.6 part is convenient for increasing the ink absorption of the device, and is easy to absorb and fix the ink during later ink jet.
Preferably, the coating dry weight of the substrate connecting layer is 0.3g per square meter, and the coating dry weight of the ink absorbing layer is 30g per square meter.
Preferably, the particle size of the vinyl acetate-acrylic acid copolymer emulsion is 0.3 mu m, the content of silicon dioxide in the superfine precipitated hydrated silicon dioxide is more than or equal to 99 percent, the pore volume is 1.4ml/g, the oil absorption value is 240g/100g, the average particle size is 10 mu m, and the better ink absorption effect is facilitated.
Preferably, the polyglycolic acid high molecular polymer: is polyglycolic acid and acrylate network copolymer, and has the following solid content: 25% and a pH of 9.
Preferably, the fixing agent is polycationic.
A method for manufacturing inkjet synthetic paper is characterized in that: the method comprises the following steps:
step a, selecting a BOPP film as a coating base material layer;
step b, preparing the base connecting layer coating and the dispersion liquid;
step c, preparing an ink absorption layer coating through the dispersion liquid;
and d, respectively driving the base material layer connecting layer and the ink absorbing layer into a trough of the coating machine, and sequentially coating the base material connecting layer and the ink absorbing layer on the BOPP film, so that the ink absorbing layer is connected with the base material layer better.
Preferably, when the primer-tie layer coating is prepared in step b: adding water into a preparation tank, starting stirring, sequentially adding the hydroxyl polyurethane emulsion, the waterborne curing agent, the wetting agent and the polyether defoamer, and stirring at 300rpm for 35min, so as to improve the uniform mixing effect;
during preparation of the dispersion: deionized water is added into the preparation tank, stirring is started, silicon dioxide powder is slowly added, and high-speed dispersion is carried out at 1500rpm for 140min to prepare silicon dioxide dispersion liquid, so that the silicon dioxide can be better dispersed.
Preferably, when preparing the ink-absorbing layer coating in step c: adding water into a preparation tank, starting stirring, sequentially adding a silicon dioxide dispersion solution, a vinyl acetate-acrylic acid copolymer emulsion, a polycation color fixing agent, a polyglycolic acid high molecular polymer, a wetting agent and a polyether defoamer, stirring for 65min under the stirring condition of 300rpm, facilitating uniform mixing, and improving the ink absorption effect of an ink absorption layer.
Preferably, in step d, a wire bar coating is used.
Preferably, in the step d, when the substrate connecting layer and the ink absorbing layer are sequentially coated, each layer is produced in a hot air drying mode, and is rolled, so that the production is facilitated, and the processing efficiency is improved.
Example 5
The invention provides a technical scheme that: the inkjet synthetic paper comprises a BOPP (biaxially-oriented polypropylene) base material layer, wherein a base material connecting layer is arranged on the BOPP base material layer, and an ink absorbing layer is arranged on the base material connecting layer;
the substrate connecting layer comprises a hydroxyl polyurethane emulsion: 80 parts of water-based curing agent: 40 parts of wetting agent: 1.5 parts of polyether defoamer: 0.5 part, which is convenient for better bonding effect and is easy to fix the ink absorbing layer;
the ink absorbing layer comprises vinyl acetate-acrylic acid copolymer emulsion: 55 parts of ultrafine precipitated hydrated silica: 45 parts of polyglycolic acid high-molecular polymer: 5 parts of a color fixing agent: 10 parts of wetting agent: 1.5 parts of polyether defoamer: and 0.6 part is convenient for increasing the ink absorption of the device, and is easy to absorb and fix the ink during later ink jet.
Preferably, the substrate connecting layer is coated with a dry weight of 0.3g per square meter, and the ink absorbing layer is coated with a dry weight of 30g per square meter.
Preferably, the particle size of the vinyl acetate-acrylic acid copolymer emulsion is 0.3 mu m, the content of silicon dioxide in the superfine precipitated hydrated silicon dioxide is more than or equal to 99 percent, the pore volume is 1.4ml/g, the oil absorption value is 240g/100g, and the average particle size is 10 mu m, so that better ink absorption effect is facilitated.
Preferably, the polyglycolic acid polymer: the polymer is a polyglycolic acid and acrylate network copolymer, and has the solid content: 25% and a pH of 9.
Preferably, the fixing agent is polycationic.
A method for manufacturing inkjet synthetic paper is characterized in that: the method comprises the following steps:
step a, selecting a BOPP film as a coating base material layer;
step b, preparing the base connecting layer coating and the dispersion liquid;
step c, preparing an ink absorption layer coating through the dispersion liquid;
and d, respectively driving the base material layer connecting layer and the ink absorbing layer into a trough of the coating machine, and sequentially coating the base material connecting layer and the ink absorbing layer on the BOPP film, so that the ink absorbing layer is connected with the base material layer better.
Preferably, when preparing the base tie layer coating in step b: adding water into a preparation tank, starting stirring, sequentially adding the hydroxyl polyurethane emulsion, the waterborne curing agent, the wetting agent and the polyether defoamer, and stirring at 300rpm for 35min, so as to improve the uniform mixing effect;
when the dispersion is prepared: deionized water is added into the preparation tank, stirring is started, silicon dioxide powder is slowly added, and the silicon dioxide powder is dispersed at a high speed of 1500rpm for 140min to prepare silicon dioxide dispersion liquid, so that the silicon dioxide can be better dispersed.
Preferably, when preparing the ink-absorbing layer coating in step c: adding water into the preparation tank, starting stirring, sequentially adding the silicon dioxide dispersion, the vinyl acetate-acrylic acid copolymer emulsion, the polycation color fixing agent, the polyglycolic acid high molecular polymer, the wetting agent and the polyether defoamer, stirring for 65min under the stirring condition of 300rpm, facilitating uniform mixing, and improving the ink absorption effect of the ink absorption layer.
Preferably, in step d, wire bar coating is used.
Preferably, in the step d, when the substrate connecting layer and the ink absorbing layer are sequentially coated, each layer is produced in a hot air drying mode, and is rolled, so that the production is facilitated, and the processing efficiency is improved.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (10)
1. The inkjet synthetic paper comprises a BOPP (biaxially-oriented polypropylene) base material layer, wherein a base material connecting layer is arranged on the BOPP base material layer, and an ink absorbing layer is arranged on the base material connecting layer;
the substrate connecting layer comprises a hydroxyl polyurethane emulsion: 60-80 parts of water-based curing agent: 20-40 parts of wetting agent: 0.5-1.5 parts of polyether defoamer: 0.3-0.5 part;
the ink absorbing layer comprises vinyl acetate-acrylic acid copolymer emulsion: 35-55 parts of superfine precipitated hydrated silica: 25-45 parts of polyglycolic acid high-molecular polymer: 5-15 parts of a color fixing agent: 5-10 parts of wetting agent: 0.5-1.5 parts of polyether defoamer: 0.3-0.6 part.
2. The inkjet synthetic paper of claim 1, wherein: the coating dry weight of the base material connecting layer is 0.2-0.3g per square meter, and the coating dry weight of the ink absorbing layer is 20-30g per square meter.
3. The inkjet synthetic paper of claim 1, wherein: the grain diameter of the vinyl acetate-acrylic acid copolymer emulsion is 0.2-0.3 mu m, the content of silicon dioxide in the superfine precipitated hydrated silicon dioxide is more than or equal to 99 percent, the pore volume is 1.4ml/g, the oil absorption value is 220-240g/100g, and the average grain diameter is 8-10 mu m.
4. The inkjet synthetic paper of claim 1, wherein: the polyglycolic acid high molecular polymer: the polymer is a polyglycolic acid and acrylate network copolymer, and has the solid content: 25% and a pH of 5-9.
5. The inkjet synthetic paper of claim 1, wherein: the color fixing agent is polycation.
6. The method for manufacturing an inkjet synthetic paper according to any one of claims 1 to 5, characterized in that: the method comprises the following steps:
step a, selecting a BOPP film as a coating base material layer;
b, preparing the base connecting layer coating and the dispersion liquid;
step c, preparing an ink absorption layer coating through the dispersion liquid;
and d, respectively driving the base layer connecting layer and the ink absorption layer into a trough of a coating machine, and sequentially coating the base material connecting layer and the ink absorption layer on the BOPP film.
7. The method of manufacturing an inkjet synthetic paper according to claim 6, characterized in that: when the base joint layer coating is prepared in the step b: adding water into a preparation tank, starting stirring, sequentially adding the hydroxyl polyurethane emulsion, the waterborne curing agent, the wetting agent and the polyether defoamer, and stirring at 300rpm for 25-35min;
during preparation of the dispersion: adding deionized water into the preparation tank, stirring, slowly adding silicon dioxide powder, and dispersing at 1500rpm for 100-140min to obtain silicon dioxide dispersion.
8. The method for manufacturing inkjet synthetic paper according to claim 7, characterized in that: when preparing the ink-absorbing layer coating in step c: adding water into the preparation tank, stirring, sequentially adding silicon dioxide dispersion, vinyl acetate-acrylic acid copolymer emulsion, polycation color fixing agent, polyglycolic acid high molecular polymer, wetting agent and polyether defoamer, and stirring at 300rpm for 55-65min.
9. The method for manufacturing inkjet synthetic paper according to claim 6, characterized in that: in step d, wire bar coating is used.
10. The method for manufacturing inkjet synthetic paper according to claim 6, characterized in that: in the step d, when the substrate connecting layer and the ink absorbing layer are sequentially coated, each layer is produced in a hot air drying mode and is rolled.
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