CN115125768A - Colorful laser transfer paper and production method thereof - Google Patents
Colorful laser transfer paper and production method thereof Download PDFInfo
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- CN115125768A CN115125768A CN202210879911.0A CN202210879911A CN115125768A CN 115125768 A CN115125768 A CN 115125768A CN 202210879911 A CN202210879911 A CN 202210879911A CN 115125768 A CN115125768 A CN 115125768A
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 26
- 238000000926 separation method Methods 0.000 claims abstract description 49
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- 229920000747 poly(lactic acid) Polymers 0.000 claims abstract description 17
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- 239000010410 layer Substances 0.000 claims description 168
- 238000001035 drying Methods 0.000 claims description 76
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- 238000002156 mixing Methods 0.000 claims description 15
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- 238000005507 spraying Methods 0.000 claims description 10
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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
- D21H27/00—Special paper not otherwise provided for, e.g. made by multi-step processes
-
- 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
- D21H19/10—Coatings without pigments
- D21H19/14—Coatings without pigments applied in a form other than the aqueous solution defined in group D21H19/12
-
- 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
- D21H19/10—Coatings without pigments
- D21H19/14—Coatings without pigments applied in a form other than the aqueous solution defined in group D21H19/12
- D21H19/20—Coatings without pigments applied in a form other than the aqueous solution defined in group D21H19/12 comprising macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
-
- 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
- D21H19/10—Coatings without pigments
- D21H19/14—Coatings without pigments applied in a form other than the aqueous solution defined in group D21H19/12
- D21H19/24—Coatings without pigments applied in a form other than the aqueous solution defined in group D21H19/12 comprising macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- D21H19/28—Polyesters
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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
- D21H19/824—Paper comprising more than one coating superposed two superposed coatings, both being non-pigmented
-
- 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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- Chemical & Material Sciences (AREA)
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Abstract
The invention discloses colorful laser transfer paper and a production method thereof. According to the invention, a bonding medium layer, a water-soluble separation layer, a protection layer and a transfer glue layer are coated between base paper and a laser pattern layer, wherein the bonding medium layer is connected with the base paper, the water-soluble separation layer is positioned between the bonding medium layer and the protection layer, the transfer glue layer is positioned between the protection layer and the laser pattern layer, when colorful transfer paper needs to be recovered, the colorful transfer paper is soaked in water, the water-soluble separation layer is dissolved to separate the laser pattern layer from the base paper, the bonding medium layer can degrade the dissolved water-soluble separation layer, so that the recovery and degradation functions are realized, the environment is more environment-friendly, polycaprolactone and polylactic acid are contained in the water-soluble separation layer, protease K and lipase are contained in the bonding medium layer, and the degradation period is greatly shortened.
Description
Technical Field
The invention relates to the technical field of laser transfer paper, in particular to colorful laser transfer paper and a production method thereof.
Background
The laser transfer paper is a new packaging material and is mainly applied to the packaging of products such as cigarettes, wines, cosmetics and the like, the laser transfer paper is aluminized paper with metal luster formed by transferring an aluminized coating with a laser effect onto a paper base, the laser effect of the laser transfer paper enables the laser transfer paper to have an appearance style completely different from that of the traditional packaging paper, and the laser transfer paper is more and more accepted and applied in the field of packaging materials due to the five colorful peculiar effects; because the laser transfer paper has large using amount, the laser transfer paper is directly discarded after being used, so that the resource waste is caused, the laser transfer paper at present has a plurality of layers, wherein the laser transfer paper comprises base paper, transfer glue and a laser pattern layer, lipid plasticizing articles are usually coated between the base paper and the transfer glue for improving the toughness and the plasticity, the whole transfer paper is in a firm and reliable bonding state and is difficult to effectively recycle, the separation of the base paper and the laser layer is simply difficult to realize, the lipid plasticizing articles are subjected to degradation treatment, and the environmental protection property is poor.
Therefore, the invention provides colorful laser transfer paper and a production method thereof.
Disclosure of Invention
The invention aims to: in order to solve the problems in the background art, the colorful laser transfer paper and the production method thereof are provided.
In order to achieve the purpose, the invention adopts the following technical scheme:
the utility model provides a radium-shine transfer paper of colorful, includes the base paper, be provided with water-soluble separation layer on the base paper, scribble the bonding dielectric layer between this water-soluble separation layer and the base paper, scribble the inoxidizing coating on the water-soluble separation layer, the inoxidizing coating has radium-shine pattern layer through shifting the glue film bonding.
As a further description of the above technical solution:
the water-soluble separating layer is a coating layer and is prepared by mixing 6-12 parts by weight of polycaprolactone, 3-6 parts by weight of polylactic acid, 4-8 parts by weight of polyvinyl alcohol, 18-32 parts by weight of starch, 2-4 parts by weight of vegetable oil and 35-42 parts by weight of organic solvent.
As a further description of the above technical solution:
the bonding medium layer is a coating layer and is prepared by mixing 2-8 parts by weight of polyurethane, 1-4 parts by weight of degrading enzyme, 12-25 parts by weight of polymethyl methacrylate and 15-18 parts by weight of polyvinyl alcohol.
As a further description of the above technical solution:
the degrading enzyme comprises proteinase K and lipase, and the ratio of the proteinase K to the lipase is 1: 2.5.
as a further description of the above technical solution:
the protective layer is a glue layer, and the thickness of the glue layer is 0.8-1.2 mu m.
A method for producing colorful laser transfer paper comprises the following steps:
step one, spraying a layer of bonding medium layer on base paper, and then carrying out drying treatment, wherein the drying temperature is 45-55 degrees, the drying time is 5 +/-1 min, and the thickness of the bonding medium layer obtained after drying is 0.8-1.2 mu m, so as to prepare the base paper with the bonding medium layer;
step two, spraying a water-soluble separation layer on the base paper with the bonding medium layer, and then performing drying treatment, wherein the drying temperature is 65-60 degrees, the drying time is 8 +/-1 min, and the thickness of the water-soluble separation layer obtained after drying is 2.5-3.0 mu m;
step three, coating a protective layer on the water-soluble separation layer in the step two, wherein the protective layer is an isolation adhesive layer, drying is carried out after coating, the drying temperature is 75-80 ℃, the drying time is 8 +/-1 min, and the thickness of the protective layer after drying is 0.8-1.2 mu m;
step four, adhering the protective layers in the step three to a laser pattern layer on a colorful laser film through transfer glue, and then drying by using a UV lamp, wherein the drying temperature is 30-45 degrees, and the drying time is 6-8 min;
and fifthly, after peeling the base film on the colorful laser film, transferring the laser pattern layer to the protective layer, and further manufacturing the colorful laser transfer paper.
As a further description of the above technical solution:
the preparation process of the bonding medium layer coating comprises the following steps:
a1, putting 6-12 parts by weight of polycaprolactone and 3-6 parts by weight of polylactic acid into a pulverizer for pulverizing and processing to obtain mixed powder;
2, putting the mixed powder, 4-8 parts by weight of polyvinyl alcohol, 18-32 parts by weight of starch, 2-4 parts by weight of vegetable oil and 35-42 parts by weight of organic solvent into a reaction kettle, stirring and heating at the temperature of 120 DEG and 135 DEG at the stirring speed of 145r/min for 15-22min, and taking out to obtain a semi-finished coating;
a3, putting the prepared semi-finished paint into a centrifugal cylinder for centrifugal treatment, wherein the centrifugal speed is 3500r/min, the centrifugal treatment time is 5-6min, and then extracting the paint in the middle of the centrifugal cylinder for later use.
As a further description of the above technical solution:
the manufacturing process of the bonding medium layer comprises the following steps:
b1, putting 2-8 parts by weight of polyurethane, 12-25 parts by weight of polymethyl methacrylate and 15-18 parts by weight of polyvinyl alcohol into a stirring barrel, stirring and heating at 85-90 ℃ for 15-20mim, and naturally cooling to obtain a semi-finished medium layer;
b2, mixing and stirring the semi-finished product of the dielectric layer and 1-4 parts of degrading enzyme to prepare the adhesive dielectric layer coating.
In summary, due to the adoption of the technical scheme, the invention has the beneficial effects that:
1. according to the invention, a bonding medium layer, a water-soluble separation layer, a protection layer and a transfer glue layer are coated between base paper and a laser pattern layer, wherein the bonding medium layer is connected with the base paper, the water-soluble separation layer is positioned between the bonding medium layer and the protection layer, the transfer glue layer is positioned between the protection layer and the laser pattern layer, when colorful transfer paper needs to be recovered, the colorful transfer paper is soaked in water, the water-soluble separation layer is dissolved to separate the laser pattern layer from the base paper, and the bonding medium layer can degrade the dissolved water-soluble separation layer, so that the recovery and degradation functions are realized, and the environment is protected.
2. According to the invention, the water-soluble separation layer contains polycaprolactone, polylactic acid, polyvinyl alcohol, starch, vegetable oil and an organic solvent, wherein the polycaprolactone and the polylactic acid can improve the toughness and plasticity of the water-soluble separation layer, the bonding medium layer contains polyurethane, degrading enzymes, polymethyl methacrylate and polyvinyl alcohol, the bonding medium layer has a bonding effect and also has a water-soluble characteristic, the degrading enzymes are released during water dissolution, the degrading enzymes are proteinase K and lipase in a ratio of 1:2.5, and the polycaprolactone and the polylactic acid can be rapidly degraded at low temperature, so that the degradation period is shortened.
Drawings
Fig. 1 is a schematic structural diagram of a cross-sectional view of a multicolor laser transfer paper provided by the present invention;
FIG. 2 is a table diagram showing the formulations of a water-soluble separation layer and a bonding medium layer in the method for producing the multicolor laser transfer paper provided by the invention;
fig. 3 is an experimental data diagram of a method for producing multicolor laser transfer paper according to the present invention.
Illustration of the drawings:
1. base paper; 2. a water-soluble separation layer; 3. bonding the dielectric layer; 4. a protective layer; 5. transferring the adhesive layer; 6. and (6) laser pattern layer.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings 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 derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
Referring to fig. 1 to 3, a multicolor laser transfer paper includes a base paper 1, a water-soluble separation layer 2 is disposed on the base paper 1, the water-soluble separation layer 2 is a coating layer and is prepared by mixing 6 parts by weight of polycaprolactone, 3 parts by weight of polylactic acid, 4 parts by weight of polyvinyl alcohol, 18 parts by weight of starch, 2 parts by weight of vegetable oil and 35 parts by weight of organic solvent, a bonding medium layer 3 is coated between the water-soluble separation layer 2 and the base paper 1, the bonding medium layer 3 is a coating layer and is prepared by mixing 2 parts by weight of polyurethane, 1 part by weight of degrading enzyme, 12 parts by weight of polymethyl methacrylate and 15 parts by weight of polyvinyl alcohol, wherein the degrading enzyme includes protease K and lipase, and the ratio of the protease K to the lipase is 1:2.5, a protective layer 4 is coated on the water-soluble separating layer 2, the protective layer 4 is a glue layer, the thickness of the glue layer is 0.8-1.2 μm, the protective layer 5 is bonded with a laser pattern layer 6 through a transfer glue layer 5, the water-soluble separating layer 2 has the effect of dissolving in water and the advantage of improving the toughness and plasticity of transfer paper, the whole protective layer 4 and the laser pattern layer 6 are separated after the water-soluble separating layer 2 is dissolved, so that the classification and the recovery are convenient, the bonding medium layer 3 has the function of dissolving in water due to the fact that polyvinyl alcohol is contained, protease K and lipase are contained in the bonding medium layer, the degradation effect on polycaprolactone and polylactic acid is achieved, and the degradation period is accelerated.
A method for producing colorful laser transfer paper comprises the following steps:
step one, spraying a layer of bonding medium layer 3 on the base paper 1, wherein the manufacturing process of the coating of the bonding medium layer 3 is as follows:
b1, putting 2 parts by weight of polyurethane, 12 parts by weight of polymethyl methacrylate and 15 parts by weight of polyvinyl alcohol into a stirring barrel, stirring and heating at 85-90 ℃ for 15-20 mm, and naturally cooling to obtain a semi-finished medium layer;
b2, mixing and stirring the semi-finished product of the dielectric layer and 1 part of degrading enzyme to prepare a coating for the bonding dielectric layer 3;
then, drying is carried out, the drying temperature is 45-55 degrees, the drying time is 5 +/-1 min, the thickness of the bonding medium layer 3 obtained after drying is 0.8-1.2 mu m, and the base paper 1 with the bonding medium layer 3 is prepared;
step two, spraying a water-soluble separation layer 2 on the base paper 1 with the bonding medium layer 3, wherein the water-soluble separation layer 2 is prepared by the following process:
a1, putting 6 parts by weight of polycaprolactone and 3 parts by weight of polylactic acid into a pulverizer for pulverization processing to obtain mixed powder;
2, putting the mixed powder, 4 parts by weight of polyvinyl alcohol, 18 parts by weight of starch, 2 parts by weight of vegetable oil and 35 parts by weight of organic solvent into a reaction kettle, stirring and heating, wherein the heating temperature is 120-135 ℃, the stirring speed is 145r/min, the stirring time is 15-22min, and then taking out to obtain a semi-finished coating, wherein the semi-finished coating is in a slurry state;
a3, putting the prepared semi-finished paint into a centrifugal cylinder for centrifugal treatment, wherein the centrifugal rotation speed is 3500r/min, the centrifugal treatment time is 5-6min, then extracting the paint in the middle of the centrifugal cylinder for standby, and the centrifugal treatment has the function of separating particles in the semi-finished paint to avoid polymeric nuclei from appearing during later water dissolution;
then, drying is carried out, the drying temperature is 65-60 degrees, the drying time is 8 +/-1 min, and the thickness of the water-soluble separation layer 2 obtained after drying is 2.5-3.0 mu m;
step three, coating a protective layer 4 on the water-soluble separation layer 2 in the step two, wherein the protective layer 4 is an isolation adhesive layer, drying is carried out after coating, the drying temperature is 75-80 ℃, the drying time is 8 +/-1 min, and the thickness of the protective layer 4 after drying is 0.8-1.2 mu m;
step four, adhering the protective layers 4 in the step three to a laser pattern layer 6 on a colorful laser film through transfer glue, and then drying by using a UV lamp, wherein the drying temperature is 30-45 degrees, and the drying time is 6-8 min;
and step five, after peeling the base film on the colorful laser film, transferring the laser pattern layer 6 to the protective layer 4 to further manufacture the colorful laser transfer paper.
Example 2
Referring to fig. 1 to 3, a multicolor laser transfer paper includes a base paper 1, a water-soluble separation layer 2 is disposed on the base paper 1, the water-soluble separation layer 2 is a coating layer and is prepared by mixing 12 parts by weight of polycaprolactone, 6 parts by weight of polylactic acid, 8 parts by weight of polyvinyl alcohol, 32 parts by weight of starch, 4 parts by weight of vegetable oil and 42 parts by weight of organic solvent, a bonding medium layer 3 is coated between the water-soluble separation layer 2 and the base paper 1, the bonding medium layer 3 is a coating layer and is prepared by mixing 8 parts by weight of polyurethane, 4 parts by weight of degrading enzyme, 25 parts by weight of polymethyl methacrylate and 18 parts by weight of polyvinyl alcohol, wherein the degrading enzyme includes protease K and lipase, and the ratio of the protease K to the lipase is 1:2.5, a protective layer 4 is coated on the water-soluble separating layer 2, the protective layer 4 is a glue layer, the thickness of the glue layer is 0.8-1.2 μm, the protective layer 5 is bonded with a laser pattern layer 6 through a transfer glue layer 5, the water-soluble separating layer 2 has the effect of dissolving in water and the advantage of improving the toughness and plasticity of transfer paper, the whole protective layer 4 and the laser pattern layer 6 are separated after the water-soluble separating layer 2 is dissolved, so that the classification and the recovery are convenient, the bonding medium layer 3 has the function of dissolving in water due to the fact that polyvinyl alcohol is contained, protease K and lipase are contained in the bonding medium layer, the degradation effect on polycaprolactone and polylactic acid is achieved, and the degradation period is accelerated.
A method for producing colorful laser transfer paper comprises the following steps:
step one, spraying a layer of bonding medium layer 3 on the base paper 1, wherein the manufacturing process of the coating of the bonding medium layer 3 is as follows:
b1, putting 8 parts by weight of polyurethane, 25 parts by weight of polymethyl methacrylate and 18 parts by weight of polyvinyl alcohol into a stirring barrel, stirring and heating at 85-90 ℃ for 15-20 mm, and naturally cooling to obtain a medium layer semi-finished product;
b2, mixing and stirring the dielectric layer semi-finished product and 4 parts of degrading enzyme to prepare a bonding dielectric layer 3 coating;
step two, spraying a water-soluble separation layer 2 on the base paper 1 with the bonding medium layer 3, wherein the water-soluble separation layer 2 is prepared by the following process:
a1, putting 12 parts by weight of polycaprolactone and 3-6 parts by weight of polylactic acid into a pulverizer for pulverizing and processing to obtain mixed powder;
2, putting the mixed powder, 8 parts by weight of polyvinyl alcohol, 32 parts by weight of starch, 4 parts by weight of vegetable oil and 42 parts by weight of organic solvent into a reaction kettle, stirring and heating, wherein the heating temperature is 120-135 ℃, the stirring speed is 145r/min, the stirring time is 15-22min, and then taking out to obtain a semi-finished coating;
a3, putting the prepared semi-finished paint into a centrifugal cylinder for centrifugal treatment, wherein the centrifugal rotation speed is 3500r/min, the centrifugal treatment time is 5-6min, then extracting the paint in the middle of the centrifugal cylinder for standby, and the centrifugal treatment has the function of separating particles in the semi-finished paint to avoid polymeric nuclei from appearing during later water dissolution;
then, drying is carried out, the drying temperature is 45-55 degrees, the drying time is 5 +/-1 min, the thickness of the bonding medium layer 3 obtained after drying is 0.8-1.2 mu m, and the base paper 1 with the bonding medium layer 3 is prepared;
then, drying is carried out, the drying temperature is 65-60 degrees, the drying time is 8 +/-1 min, and the thickness of the water-soluble separation layer 2 obtained after drying is 2.5-3.0 mu m;
step three, coating a protective layer 4 on the water-soluble separation layer 2 in the step two, wherein the protective layer 4 is an isolation adhesive layer, drying is carried out after coating, the drying temperature is 75-80 ℃, the drying time is 8 +/-1 min, and the thickness of the protective layer 4 after drying is 0.8-1.2 mu m;
step four, adhering the protective layers 4 in the step three to a laser pattern layer 6 on a colorful laser film through transfer glue, and then drying by using a UV lamp, wherein the drying temperature is 30-45 degrees, and the drying time is 6-8 min;
and step five, after peeling the base film on the colorful laser film, transferring the laser pattern layer 6 to the protective layer 4 to further manufacture the colorful laser transfer paper.
Example 3
Referring to fig. 1 to 3, a multicolor laser transfer paper includes a base paper 1, a water-soluble separation layer 2 is disposed on the base paper 1, the water-soluble separation layer 2 is a coating layer and is prepared by mixing 8 parts by weight of polycaprolactone, 5 parts by weight of polylactic acid, 6 parts by weight of polyvinyl alcohol, 25 parts by weight of starch, 3 parts by weight of vegetable oil and 38 parts by weight of organic solvent, a bonding medium layer 3 is coated between the water-soluble separation layer 2 and the base paper 1, the bonding medium layer 3 is a coating layer and is prepared by mixing 6 parts by weight of polyurethane, 3 parts by weight of degrading enzyme, 20 parts by weight of polymethyl methacrylate and 17 parts by weight of polyvinyl alcohol, wherein the degrading enzyme includes protease K and lipase, and the ratio of the protease K to the lipase is 1:2.5, a protective layer 4 is coated on the water-soluble separating layer 2, the protective layer 4 is a glue layer, the thickness of the glue layer is 0.8-1.2 μm, the protective layer 5 is bonded with a laser pattern layer 6 through a transfer glue layer 5, the water-soluble separating layer 2 has the effect of dissolving in water and the advantage of improving the toughness and plasticity of transfer paper, the whole protective layer 4 and the laser pattern layer 6 are separated after the water-soluble separating layer 2 is dissolved, so that the classification and the recovery are convenient, the bonding medium layer 3 has the function of dissolving in water due to the fact that polyvinyl alcohol is contained, protease K and lipase are contained in the bonding medium layer, the degradation effect on polycaprolactone and polylactic acid is achieved, and the degradation period is accelerated.
A method for producing colorful laser transfer paper comprises the following steps:
step one, spraying a layer of bonding medium layer 3 on the base paper 1, wherein the manufacturing process of the coating of the bonding medium layer 3 is as follows:
b1, putting 6 parts by weight of polyurethane, 20 parts by weight of polymethyl methacrylate and 17 parts by weight of polyvinyl alcohol into a stirring barrel, stirring and heating at 85-90 ℃ for 15-20 mm, and naturally cooling to obtain a medium layer semi-finished product;
b2, mixing and stirring the semi-finished product of the dielectric layer and 3 parts of degrading enzyme to prepare a coating for bonding the dielectric layer 3;
then, drying treatment is carried out, the drying temperature is 45-55 degrees, the drying time is 5 +/-1 min, the thickness of the bonding medium layer 3 obtained after drying is 0.8-1.2 mu m, and the base paper 1 with the bonding medium layer 3 is prepared;
step two, spraying a water-soluble separation layer 2 on the base paper 1 with the bonding medium layer 3, wherein the water-soluble separation layer 2 is prepared by the following process:
a1, putting 8 parts by weight of polycaprolactone and 5 parts by weight of polylactic acid into a pulverizer for pulverization processing to obtain mixed powder;
2, putting the mixed powder, 6 parts by weight of polyvinyl alcohol, 25 parts by weight of starch, 3 parts by weight of vegetable oil and 38 parts by weight of organic solvent into a reaction kettle, stirring and heating, wherein the heating temperature is 120-135 ℃, the stirring speed is 145r/min, the stirring time is 15-22min, and then taking out to obtain a semi-finished coating;
a3, putting the prepared semi-finished paint into a centrifugal cylinder for centrifugal treatment, wherein the centrifugal rotation speed is 3500r/min, the centrifugal treatment time is 5-6min, then extracting the paint in the middle of the centrifugal cylinder for standby, and the centrifugal treatment has the function of separating particles in the semi-finished paint to avoid polymeric nuclei from appearing during later water dissolution;
then, drying is carried out, the drying temperature is 65-60 degrees, the drying time is 8 +/-1 min, and the thickness of the water-soluble separation layer 2 obtained after drying is 2.5-3.0 mu m;
step three, coating a protective layer 4 on the water-soluble separation layer 2 in the step two, wherein the protective layer 4 is an isolation adhesive layer, drying is carried out after coating, the drying temperature is 75-80 ℃, the drying time is 8 +/-1 min, and the thickness of the protective layer 4 after drying is 0.8-1.2 mu m;
step four, adhering the protective layers 4 in the step three to a laser pattern layer 6 on a colorful laser film through transfer glue, and then drying by using a UV lamp, wherein the drying temperature is 30-45 degrees, and the drying time is 6-8 min;
and step five, after peeling the base film on the colorful laser film, transferring the laser pattern layer 6 to the protective layer 4 to further manufacture the colorful laser transfer paper.
The colorful laser transfer paper obtained in the above embodiment is subjected to a recycling degradation test, and the test method is as follows:
cutting common colorful laser transfer paper with the same specification and the colorful laser transfer paper obtained in the embodiments 1 to 3, weighing, then respectively and simultaneously placing four pieces of colorful laser transfer paper with the same specification into four steaming pots, injecting water into the steaming pots with the water temperature of 55 degrees, keeping the temperature for 48 hours, then naturally cooling to room temperature (about 25 degrees), visually observing the separation condition of the laser pattern layer 6 and the base paper 1, then respectively filtering residues in the four steaming pots through 30-mesh filter screens to obtain degradation residues, drying, weighing and comparing the degradation residues, wherein the degradation effect is the worst if the weight is larger, and the specific test conclusion is shown in the attached drawing.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (8)
1. The utility model provides a radium-shine transfer paper of colorful, includes base paper (1), its characterized in that, be provided with water-soluble separation layer (2) on base paper (1), scribble bonding dielectric layer (3) between this water-soluble separation layer (2) and base paper (1), scribble inoxidizing coating (4) on water-soluble separation layer (2), inoxidizing coating (5) are through transferring glue film (5) bonding laser pattern layer (6).
2. The multicolor laser transfer paper as claimed in claim 1, wherein the water-soluble separation layer (2) is a paint layer prepared by mixing 6-12 parts by weight of polycaprolactone, 3-6 parts by weight of polylactic acid, 4-8 parts by weight of polyvinyl alcohol, 18-32 parts by weight of starch, 2-4 parts by weight of vegetable oil and 35-42 parts by weight of organic solvent.
3. The multicolor laser transfer paper as claimed in claim 2, wherein the adhesive medium layer (3) is a paint layer prepared by mixing 2-8 parts by weight of polyurethane, 1-4 parts by weight of degrading enzyme, 12-25 parts by weight of polymethyl methacrylate and 15-18 parts by weight of polyvinyl alcohol.
4. The multicolor laser transfer paper as claimed in claim 3, wherein the degrading enzyme comprises proteinase K and lipase in a ratio of 1: 2.5.
5. the multicolor laser transfer paper as claimed in claim 1, wherein the protective layer (4) is a glue layer and has a thickness of 0.8-1.2 μm.
6. A method for producing colorful laser transfer paper is characterized by comprising the following steps:
step one, spraying a layer of bonding medium layer (3) on base paper (1), and then carrying out drying treatment, wherein the drying temperature is 45-55 degrees, the drying time is 5 +/-1 min, and the thickness of the bonding medium layer (3) obtained after drying is 0.8-1.2 mu m, so as to obtain the base paper (1) with the bonding medium layer (3);
secondly, spraying a water-soluble separation layer (2) on the base paper (1) with the bonding medium layer (3), and then performing drying treatment, wherein the drying temperature is 65-60 degrees, the drying time is 8 +/-1 min, and the thickness of the water-soluble separation layer (2) obtained after drying is 2.5-3.0 mu m;
step three, coating a protective layer (4) on the water-soluble separation layer (2) in the step two, wherein the protective layer (4) is an isolation adhesive layer, drying is carried out after coating, the drying temperature is 75-80 ℃, the drying time is 8 +/-1 min, and the thickness of the protective layer (4) after drying is 0.8-1.2 mu m;
step four, adhering the protective layers (4) in the step three to a laser pattern layer (6) on the colorful laser film through transfer glue, and then drying by using a UV lamp, wherein the drying temperature is 30-45 degrees, and the drying time is 6-8 min;
and fifthly, after peeling the base film on the colorful laser film, transferring the laser pattern layer (6) to the protective layer (4) to further manufacture the colorful laser transfer paper.
7. The method for producing colorful laser transfer paper as claimed in claim 6, wherein the manufacturing process of the coating of the bonding medium layer (3) is as follows:
a1, putting 6-12 parts by weight of polycaprolactone and 3-6 parts by weight of polylactic acid into a pulverizer for pulverizing and processing to obtain mixed powder;
2, putting the mixed powder, 4-8 parts by weight of polyvinyl alcohol, 18-32 parts by weight of starch, 2-4 parts by weight of vegetable oil and 35-42 parts by weight of organic solvent into a reaction kettle, stirring and heating at the temperature of 120 DEG and 135 DEG at the stirring speed of 145r/min for 15-22min, and taking out to obtain a semi-finished coating;
a3, putting the prepared semi-finished paint into a centrifugal cylinder for centrifugal treatment, wherein the centrifugal rotation speed is 3500r/min, the centrifugal treatment time is 5-6min, and then extracting the paint in the middle of the centrifugal cylinder for later use.
8. The method for producing colorful laser transfer paper as claimed in claim 6, wherein the manufacturing process of the bonding medium layer (3) is as follows:
b1, putting 2-8 parts by weight of polyurethane, 12-25 parts by weight of polymethyl methacrylate and 15-18 parts by weight of polyvinyl alcohol into a stirring barrel, stirring and heating at 85-90 ℃ for 15-20mim, and naturally cooling to obtain a semi-finished medium layer;
b2, mixing and stirring the semi-finished product of the dielectric layer and 1-4 parts of degrading enzyme to prepare the coating of the bonding dielectric layer (3).
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Application publication date: 20220930 |