CN115450066B - Ink-jet synthetic paper and manufacturing method thereof - Google Patents
Ink-jet synthetic paper and manufacturing method thereof Download PDFInfo
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- CN115450066B CN115450066B CN202211335626.9A CN202211335626A CN115450066B CN 115450066 B CN115450066 B CN 115450066B CN 202211335626 A CN202211335626 A CN 202211335626A CN 115450066 B CN115450066 B CN 115450066B
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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 an inkjet synthetic paper and a manufacturing method thereof, comprising 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; the substrate is primed by the two-component coating, so that the ink-absorbing layer and the substrate are firmly combined, the product coating is firmer, the ink-absorbing layer uses the vinyl acetate-acrylic acid copolymer emulsion with large particle diameter, and is interwoven with silicon dioxide particles to form a mesh-shaped structure after drying, so that the ink-jet absorption speed is faster, the drying efficiency is improved, the adhesive strength of the polyglycolic acid high polymer used for the ink-absorbing layer is good after being coated and dried, 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 inkjet printing technology has been advanced into various fields of life, and the development of advertising consumables makes different selections of materials required at different use sites. In addition to the long-used paper-based ink-jet printing paper, there is a demand for ink-jet printing synthetic paper with a film substrate, which is generally made by coating a BOPP substrate with an ink-jet functional coating, unlike ink-jet printing paper, the film substrate itself is difficult to firmly bond with the coating on the one hand, and the film itself is not absorbent on the other hand. The required inkjet coating differs significantly from conventional inkjet paper coating processes. In general, a primer layer is generally applied as a connection layer between the ink-receptive coating and the substrate. Then one or more layers of ink-absorbing coating are coated to achieve the function of meeting the requirement of ink-jet.
The existing synthetic paper ink-absorbing coating not only needs to fully absorb ink, but also needs to achieve firm bonding of the coating, and simultaneously needs to meet the waterproof performance of the coating and the ink-jet pattern. Therefore, the materials and the formulation of the coating are optimized to achieve the best effect of the coating. The surface strength of the ink-absorbing coating of the current ink-jet synthetic paper products used in the domestic market is obviously insufficient, and the ink-absorbing capacity of the coating must be realized by depending on a very high coating amount. 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 PVA (polyvinyl alcohol) having a medium and high molecular weight is basically used as an adhesive for achieving good surface strength. A large amount of water-resistant resin emulsion is also required to satisfy the water resistance of the coating. The addition of PVA and resin emulsion significantly reduces the absorbency of the coating, so only the coating weight can be increased to meet the ink absorbency requirement. The disadvantage of this technology is high cost of coating and low coating efficiency, so we propose an inkjet 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 solve the problems set forth in the background art.
In order to achieve the above purpose, the present invention provides the following technical solutions: an 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 polyglycolic acid high molecular polymer: 5-15 parts of color fixing agent: 5-10 parts of wetting agent: 0.5-1.5 parts of polyether defoamer: 0.3-0.6 part;
the particle size of the vinyl acetate-acrylic acid copolymer emulsion is 0.2-0.3 mu m, the silicon dioxide content 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 mu m;
the polyglycolic acid high molecular polymer is a polyglycolic acid and acrylic ester network copolymer, and has solid content: 25% and pH 5-9.
Preferably, the coating dry weight of the substrate connecting layer is 0.2-0.3g/m, and the coating dry weight of the ink absorbing layer is 20-30 g/m.
Preferably, the fixing agent is polycationic.
A method for manufacturing an inkjet synthetic paper, characterized by: the method comprises the following steps:
step a, selecting a BOPP film as a coating substrate layer;
b, preparing a base layer connecting layer coating and a dispersion liquid;
step c, preparing ink-absorbing layer paint through the dispersion liquid;
and d, respectively pumping the base layer connecting layer and the ink absorbing layer into a trough of a coater, and sequentially coating the BOPP film with the base material connecting layer and the ink absorbing layer.
Preferably, the preparation of the base tie layer coating in step b: adding water into a preparation tank, starting stirring, sequentially adding hydroxyl polyurethane emulsion, a water-based curing agent, a wetting agent and a polyether defoamer, and stirring at 300rpm for 25-35min;
the preparation of the dispersion liquid comprises the following steps: adding deionized water into a preparation tank, starting stirring, slowly adding silicon dioxide powder, and dispersing at 1500rpm for 100-140min to prepare silicon dioxide dispersion.
Preferably, in the preparation of the ink-receptive layer coating in step c: adding water into a preparation tank, starting stirring, sequentially adding silicon dioxide dispersion liquid, vinyl acetate-acrylic acid copolymer emulsion, polycation color fixing agent, polyglycolic acid high polymer, wetting agent and polyether defoamer, and stirring for 55-65min under the stirring condition of 300 rpm.
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 coated in sequence, each layer is produced by adopting a hot air drying mode and is rolled.
Compared with the prior art, the invention has the beneficial effects that:
the substrate is primed by the two-component coating, so that the ink-absorbing layer and the substrate are firmly combined, the product coating is firmer, the ink-absorbing layer uses the vinyl acetate-acrylic acid copolymer emulsion with large particle diameter, and is interwoven with silicon dioxide particles to form a mesh-shaped structure after drying, so that the ink-jet absorption speed is faster, the drying efficiency is improved, the drying adhesive strength is increased, the required coating amount is reduced, the substrate has excellent waterproof performance, the adhesive strength of the polyglycolic acid high polymer for the ink-absorbing layer is good after the coating and drying, the influence on the ink absorption capacity is smaller, and the practicability of the device is improved.
Drawings
Fig. 1 is a schematic diagram of the effect of the present invention.
Detailed Description
The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to fig. 1 of the embodiments of the present invention, and it is apparent that the described embodiments are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Example 1
The invention provides a technical scheme that: an 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 parts of aqueous curing agent: 20 parts, be convenient for improve the adhesion, increase the bonding strength of device, wetting agent: 0.5 part of polyether defoamer: 0.3 parts;
the ink absorbing layer comprises vinyl acetate-acrylic acid copolymer emulsion: 35 parts of superfine precipitated hydrated silica: 25 parts of polyglycolic acid high polymer which is convenient for better waterproof effect: 5 parts of color fixing agent: 5 parts of a wetting agent, which is convenient for improving the moisture resistance and fastness effect of the dye after ink absorption: 0.5 part of polyether defoamer: 0.3 parts of a waterproof agent which is convenient for better waterproof effect;
the particle size of the vinyl acetate-acrylic acid copolymer emulsion is 0.2 mu m, the silicon dioxide content in the superfine precipitated hydrated silicon dioxide is more than or equal to 99%, the superfine precipitated hydrated silicon dioxide is convenient to be well interweaved with silicon dioxide particles to form a mesh-shaped structure after drying, the ink absorption waterproof effect is improved, the pore volume is 1.4ml/g, the oil absorption value is 230g/100g, and the average particle size is 8 mu m;
the polyglycolic acid high molecular polymer is a polyglycolic acid and acrylic ester network copolymer, and has solid content: 25% pH 5.
Preferably, the coating dry weight of the substrate connecting layer is 0.2g/m, and the coating dry weight of the ink absorbing layer is 20 g/m.
Preferably, the fixing agent is polycationic.
A method for manufacturing an inkjet synthetic paper, characterized by: the method comprises the following steps:
step a, selecting a BOPP film as a coating substrate layer;
b, preparing a base layer connecting layer coating and a dispersion liquid;
step c, preparing ink-absorbing layer paint through the dispersion liquid;
and d, respectively pumping the base layer connecting layer and the ink absorbing layer into a trough of a coater, and sequentially coating the BOPP film with the base material connecting layer and the ink absorbing layer.
Preferably, the preparation of the base tie layer coating in step b: adding water into a preparation tank, starting stirring, sequentially adding hydroxyl polyurethane emulsion, a water-based curing agent, a wetting agent and a polyether defoamer, and stirring at 300rpm for 25min, so as to improve the uniform mixing effect;
the preparation of the dispersion liquid comprises the following steps: deionized water is added into a preparation tank, stirring is started, silicon dioxide powder is slowly added, so that silicon dioxide is better dispersed, and the silicon dioxide is dispersed at a high speed of 1500rpm for 100min to prepare silicon dioxide dispersion liquid.
Preferably, in the preparation of the ink-receptive layer coating in step c: adding water into a preparation tank, starting stirring, sequentially adding silicon dioxide dispersion liquid, vinyl acetate-acrylic acid copolymer emulsion, polycation color fixing agent, polyglycolic acid high polymer, wetting agent and polyether defoamer, stirring for 55min under the stirring condition of 300rpm, facilitating uniform mixing, and improving the ink absorption effect of an ink absorption layer.
Preferably, in step d, wire bar coating is used, so as to increase the uniform effect of device coating.
Preferably, in the step d, when the substrate connecting layer and the ink absorbing layer are coated in sequence, each layer is produced in a hot air drying mode, so that a more funny drying effect is facilitated, and the substrate is wound.
Example 2
The invention provides a technical scheme that: an 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: 80 parts of aqueous curing agent: 40 parts of wetting agent: 1.5 parts of polyether defoamer: 0.5 part, which is convenient for better bonding effect and easy to fix the ink absorbing layer;
the ink absorbing layer comprises vinyl acetate-acrylic acid copolymer emulsion: 35 parts of superfine precipitated hydrated silica: 25 parts of polyglycolic acid high molecular polymer: 5 parts of color fixing agent: 10 parts of wetting agent: 1.5 parts of polyether defoamer: 0.3 part is convenient for increasing the ink absorbability of the device, and is easy to absorb and fix the ink in later ink jet.
Preferably, the coating dry weight of the substrate connecting layer is 0.3g/m, and the coating dry weight of the ink absorbing layer is 30 g/m.
Preferably, the particle size of the vinyl acetate-acrylic acid copolymer emulsion is 0.2 mu m, the silicon dioxide content 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 240g/100g, and the average particle size is 10 mu m, so that better ink absorption effect is facilitated.
Preferably, the polyglycolic acid high molecular polymer: is polyglycolic acid and acrylic ester network copolymer with solid content: 25% pH 9.
Preferably, the fixing agent is polycationic.
A method for manufacturing an inkjet synthetic paper, characterized by: the method comprises the following steps:
step a, selecting a BOPP film as a coating substrate layer;
b, preparing a base layer connecting layer coating and a dispersion liquid;
step c, preparing ink-absorbing layer paint through the dispersion liquid;
and d, respectively pumping the substrate layer connecting layer and the ink absorbing layer into a trough of a coater, and sequentially coating the BOPP film with the substrate connecting layer and the ink absorbing layer, so that the ink absorbing layer and the substrate layer are connected better.
Preferably, the preparation of the base tie layer coating in step b: adding water into a preparation tank, starting stirring, sequentially adding hydroxyl polyurethane emulsion, a water-based curing agent, a wetting agent and a polyether defoamer, and stirring at 300rpm for 35min, so as to improve the uniform mixing effect;
the preparation of the dispersion liquid comprises the following steps: deionized water is added into a 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 better silicon dioxide dispersion is facilitated.
Preferably, in the preparation of the ink-receptive layer coating in step c: adding water into a preparation tank, starting stirring, sequentially adding silicon dioxide dispersion liquid, vinyl acetate-acrylic acid copolymer emulsion, polycation color fixing agent, polyglycolic acid high polymer, wetting agent and 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, wire bar coating is used.
Preferably, in the step d, when the substrate connecting layer and the ink absorbing layer are coated in sequence, each layer is produced in a hot air drying mode, and is wound, so that the production is facilitated, and the processing efficiency is improved.
Example 3
The invention provides a technical scheme that: an 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 parts of aqueous curing agent: 40 parts of wetting agent: 1.5 parts of polyether defoamer: 0.5 part, which is convenient for better bonding effect and easy to fix the ink absorbing layer;
the ink absorbing layer comprises vinyl acetate-acrylic acid copolymer emulsion: 35 parts of superfine precipitated hydrated silica: 45 parts of polyglycolic acid high molecular polymer: 15 parts of color fixing agent: 10 parts of wetting agent: 1.5 parts of polyether defoamer: 0.3 part is convenient for increasing the ink absorbability of the device, and is easy to absorb and fix the ink in later ink jet.
Preferably, the coating dry weight of the substrate connecting layer is 0.3g/m, and the coating dry weight of the ink absorbing layer is 30 g/m.
Preferably, the particle size of the vinyl acetate-acrylic acid copolymer emulsion is 0.3 mu m, the silicon dioxide content 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 240g/100g, and the average particle size is 10 mu m, so that better ink absorption effect is facilitated.
Preferably, the polyglycolic acid high molecular polymer: is polyglycolic acid and acrylic ester network copolymer with solid content: 25% pH 9.
Preferably, the fixing agent is polycationic.
A method for manufacturing an inkjet synthetic paper, characterized by: the method comprises the following steps:
step a, selecting a BOPP film as a coating substrate layer;
b, preparing a base layer connecting layer coating and a dispersion liquid;
step c, preparing ink-absorbing layer paint through the dispersion liquid;
and d, respectively pumping the substrate layer connecting layer and the ink absorbing layer into a trough of a coater, and sequentially coating the BOPP film with the substrate connecting layer and the ink absorbing layer, so that the ink absorbing layer and the substrate layer are connected better.
Preferably, the preparation of the base tie layer coating in step b: adding water into a preparation tank, starting stirring, sequentially adding hydroxyl polyurethane emulsion, a water-based curing agent, a wetting agent and a polyether defoamer, and stirring at 300rpm for 35min, so as to improve the uniform mixing effect;
the preparation of the dispersion liquid comprises the following steps: deionized water is added into a 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 better silicon dioxide dispersion is facilitated.
Preferably, in the preparation of the ink-receptive layer coating in step c: adding water into a preparation tank, starting stirring, sequentially adding silicon dioxide dispersion liquid, vinyl acetate-acrylic acid copolymer emulsion, polycation color fixing agent, polyglycolic acid high polymer, wetting agent and 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, wire bar coating is used.
Preferably, in the step d, when the substrate connecting layer and the ink absorbing layer are coated in sequence, each layer is produced in a hot air drying mode, and is wound, so that the production is facilitated, and the processing efficiency is improved.
Example 4
The invention provides a technical scheme that: an 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: 80 parts of aqueous curing agent: 40 parts of wetting agent: 1.5 parts of polyether defoamer: 0.5 part, which is convenient for better bonding effect and easy to fix the ink absorbing layer;
the ink absorbing layer comprises vinyl acetate-acrylic acid copolymer emulsion: 55 parts of superfine precipitated hydrated silica: 45 parts of polyglycolic acid high molecular polymer: 15 parts of color fixing agent: 10 parts of wetting agent: 1.5 parts of polyether defoamer: 0.6 part is convenient for increasing the ink absorbability of the device, and is easy to absorb and fix the ink in later ink jet.
Preferably, the coating dry weight of the substrate connecting layer is 0.3g/m, and the coating dry weight of the ink absorbing layer is 30 g/m.
Preferably, the particle size of the vinyl acetate-acrylic acid copolymer emulsion is 0.3 mu m, the silicon dioxide content 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 240g/100g, and the average particle size is 10 mu m, so that better ink absorption effect is facilitated.
Preferably, the polyglycolic acid high molecular polymer: is polyglycolic acid and acrylic ester network copolymer with solid content: 25% pH 9.
Preferably, the fixing agent is polycationic.
A method for manufacturing an inkjet synthetic paper, characterized by: the method comprises the following steps:
step a, selecting a BOPP film as a coating substrate layer;
b, preparing a base layer connecting layer coating and a dispersion liquid;
step c, preparing ink-absorbing layer paint through the dispersion liquid;
and d, respectively pumping the substrate layer connecting layer and the ink absorbing layer into a trough of a coater, and sequentially coating the BOPP film with the substrate connecting layer and the ink absorbing layer, so that the ink absorbing layer and the substrate layer are connected better.
Preferably, the preparation of the base tie layer coating in step b: adding water into a preparation tank, starting stirring, sequentially adding hydroxyl polyurethane emulsion, a water-based curing agent, a wetting agent and a polyether defoamer, and stirring at 300rpm for 35min, so as to improve the uniform mixing effect;
the preparation of the dispersion liquid comprises the following steps: deionized water is added into a 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 better silicon dioxide dispersion is facilitated.
Preferably, in the preparation of the ink-receptive layer coating in step c: adding water into a preparation tank, starting stirring, sequentially adding silicon dioxide dispersion liquid, vinyl acetate-acrylic acid copolymer emulsion, polycation color fixing agent, polyglycolic acid high polymer, wetting agent and 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, wire bar coating is used.
Preferably, in the step d, when the substrate connecting layer and the ink absorbing layer are coated in sequence, each layer is produced in a hot air drying mode, and is wound, so that the production is facilitated, and the processing efficiency is improved.
Example 5
The invention provides a technical scheme that: an 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: 80 parts of aqueous curing agent: 40 parts of wetting agent: 1.5 parts of polyether defoamer: 0.5 part, which is convenient for better bonding effect and easy to fix the ink absorbing layer;
the ink absorbing layer comprises vinyl acetate-acrylic acid copolymer emulsion: 55 parts of superfine precipitated hydrated silica: 45 parts of polyglycolic acid high molecular polymer: 5 parts of color fixing agent: 10 parts of wetting agent: 1.5 parts of polyether defoamer: 0.6 part is convenient for increasing the ink absorbability of the device, and is easy to absorb and fix the ink in later ink jet.
Preferably, the coating dry weight of the substrate connecting layer is 0.3g/m, and the coating dry weight of the ink absorbing layer is 30 g/m.
Preferably, the particle size of the vinyl acetate-acrylic acid copolymer emulsion is 0.3 mu m, the silicon dioxide content 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 240g/100g, and the average particle size is 10 mu m, so that better ink absorption effect is facilitated.
Preferably, the polyglycolic acid high molecular polymer: is polyglycolic acid and acrylic ester network copolymer with solid content: 25% pH 9.
Preferably, the fixing agent is polycationic.
A method for manufacturing an inkjet synthetic paper, characterized by: the method comprises the following steps:
step a, selecting a BOPP film as a coating substrate layer;
b, preparing a base layer connecting layer coating and a dispersion liquid;
step c, preparing ink-absorbing layer paint through the dispersion liquid;
and d, respectively pumping the substrate layer connecting layer and the ink absorbing layer into a trough of a coater, and sequentially coating the BOPP film with the substrate connecting layer and the ink absorbing layer, so that the ink absorbing layer and the substrate layer are connected better.
Preferably, the preparation of the base tie layer coating in step b: adding water into a preparation tank, starting stirring, sequentially adding hydroxyl polyurethane emulsion, a water-based curing agent, a wetting agent and a polyether defoamer, and stirring at 300rpm for 35min, so as to improve the uniform mixing effect;
the preparation of the dispersion liquid comprises the following steps: deionized water is added into a 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 better silicon dioxide dispersion is facilitated.
Preferably, in the preparation of the ink-receptive layer coating in step c: adding water into a preparation tank, starting stirring, sequentially adding silicon dioxide dispersion liquid, vinyl acetate-acrylic acid copolymer emulsion, polycation color fixing agent, polyglycolic acid high polymer, wetting agent and 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, wire bar coating is used.
Preferably, in the step d, when the substrate connecting layer and the ink absorbing layer are coated in sequence, each layer is produced in a hot air drying mode, and is wound, 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 understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (8)
1. An 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 polyglycolic acid high molecular polymer: 5-15 parts of color fixing agent: 5-10 parts of wetting agent: 0.5-1.5 parts of polyether defoamer: 0.3-0.6 part;
the particle size of the vinyl acetate-acrylic acid copolymer emulsion is 0.2-0.3 mu m, the silicon dioxide content 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 mu m;
the polyglycolic acid high molecular polymer is a polyglycolic acid and acrylic ester network copolymer, and has solid content: 25% and pH 5-9.
2. An inkjet synthetic paper according to claim 1, wherein: the coating dry weight of the substrate connecting layer is 0.2-0.3g/m < m >, and the coating dry weight of the ink absorbing layer is 20-30g/m < m >.
3. An inkjet synthetic paper according to claim 1, wherein: the color fixing agent is polycation type.
4. A method of producing an inkjet synthetic paper according to any one of claims 1 to 3, characterized in that: the method comprises the following steps:
step a, selecting a BOPP film as a coating substrate layer;
b, preparing a base layer connecting layer coating and a dispersion liquid;
step c, preparing ink-absorbing layer paint through the dispersion liquid;
and d, respectively pumping the base layer connecting layer and the ink absorbing layer into a trough of a coater, and sequentially coating the BOPP film with the base material connecting layer and the ink absorbing layer.
5. The method for producing an inkjet synthetic paper according to claim 4, wherein: in the preparation of the base tie layer coating in step b: adding water into a preparation tank, starting stirring, sequentially adding hydroxyl polyurethane emulsion, a water-based curing agent, a wetting agent and a polyether defoamer, and stirring at 300rpm for 25-35min;
the preparation of the dispersion liquid comprises the following steps: adding deionized water into a preparation tank, starting stirring, slowly adding silicon dioxide powder, and dispersing at 1500rpm for 100-140min to prepare silicon dioxide dispersion.
6. The method for producing an inkjet synthetic paper according to claim 5, wherein: in the preparation of the ink-absorbing layer coating in step c: adding water into a preparation tank, starting stirring, sequentially adding silicon dioxide dispersion liquid, vinyl acetate-acrylic acid copolymer emulsion, polycation color fixing agent, polyglycolic acid high polymer, wetting agent and polyether defoamer, and stirring for 55-65min under the stirring condition of 300 rpm.
7. The method for producing an inkjet synthetic paper according to claim 5, wherein: in step d, wire bar coating is used.
8. The method for producing an inkjet synthetic paper according to claim 5, wherein: in the step d, when the substrate connecting layer and the ink absorbing layer are coated in sequence, each layer is produced in a hot air drying mode and is rolled.
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