CN109162151B - Production process method of paper pulp molded product with micro anti-counterfeiting information - Google Patents
Production process method of paper pulp molded product with micro anti-counterfeiting information Download PDFInfo
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- CN109162151B CN109162151B CN201810786021.9A CN201810786021A CN109162151B CN 109162151 B CN109162151 B CN 109162151B CN 201810786021 A CN201810786021 A CN 201810786021A CN 109162151 B CN109162151 B CN 109162151B
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- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21J—FIBREBOARD; MANUFACTURE OF ARTICLES FROM CELLULOSIC FIBROUS SUSPENSIONS OR FROM PAPIER-MACHE
- D21J5/00—Manufacture of hollow articles by transferring sheets, produced from fibres suspensions or papier-mâché by suction on wire-net moulds, to couch-moulds
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
- B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
- B42D25/00—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
- B42D25/30—Identification or security features, e.g. for preventing forgery
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B44—DECORATIVE ARTS
- B44C—PRODUCING DECORATIVE EFFECTS; MOSAICS; TARSIA WORK; PAPERHANGING
- B44C1/00—Processes, not specifically provided for elsewhere, for producing decorative surface effects
- B44C1/22—Removing surface-material, e.g. by engraving, by etching
- B44C1/225—Removing surface-material, e.g. by engraving, by etching by engraving
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B44—DECORATIVE ARTS
- B44C—PRODUCING DECORATIVE EFFECTS; MOSAICS; TARSIA WORK; PAPERHANGING
- B44C1/00—Processes, not specifically provided for elsewhere, for producing decorative surface effects
- B44C1/22—Removing surface-material, e.g. by engraving, by etching
- B44C1/228—Removing surface-material, e.g. by engraving, by etching by laser radiation
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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
- D21H11/00—Pulp or paper, comprising cellulose or lignocellulose fibres of natural origin only
- D21H11/08—Mechanical or thermomechanical pulp
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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
- D21H11/00—Pulp or paper, comprising cellulose or lignocellulose fibres of natural origin only
- D21H11/12—Pulp from non-woody plants or crops, e.g. cotton, flax, straw, bagasse
Abstract
The invention discloses a production process method of a paper pulp molding product with micro anti-counterfeiting information, which comprises the following steps: selecting materials; step two, preparation; step three, processing a mould; step four, observing and indicating; and step five, anti-counterfeiting information. The invention can increase the anti-counterfeiting effect of the molding by setting the micro information.
Description
Technical Field
The invention relates to the technical field of paper pulp molded product production, in particular to a production process method of a paper pulp molded product with micro anti-counterfeiting information.
Background
The paper pulp molding takes plant fibers such as waste paper, bamboo pulp, sugarcane pulp, wood pulp and the like as raw materials, uses a mold to suck, filter and form the plant fibers in a pulp state to prepare a wet blank, and then carries out hot press shaping to prepare a finished product; the technology does not need any adhesive, can be made into paper products with complex shapes and higher requirements on dimensional precision, and is a technology for obtaining ideal packaging materials. The product can be completely degraded after being used and discarded, has the advantages of environmental protection, degradability, recycling and the like, and becomes a new environment-friendly packaging material.
For high-quality products such as electronic products, cosmetics, medical supplies, precision instruments and the like, the paper pulp molded product needs to realize an anti-counterfeiting function while replacing the traditional packaging material. How to realize the anti-counterfeiting function and not influencing the green and environment-friendly characteristics of the paper pulp molding product is a difficult problem.
Therefore, it is necessary to invent a process for producing a pulp molded product with micro anti-counterfeiting information to solve the above problems.
Disclosure of Invention
The invention aims to provide a production process method of a paper pulp molding product with micro anti-counterfeiting information, when the anti-counterfeiting information is marked on a mold, the number of marks is usually not more than 3, the production difficulty of anti-counterfeiting marks is reduced as much as possible, patterns are drawn within a certain size range, the more the number is, the greater the difficulty is, the workload is reduced while the anti-counterfeiting information is ensured, after a selected letter or simple character is selected, the selected texture mark grains are engraved on the surface of the raised character mark, and after the letter or simple character is copied by other external manufacturers, the sizes of all angles of the grains cannot be copied, so that the effect of the anti-counterfeiting information is increased, and the problem provided in the background technology is solved.
In order to achieve the purpose, the invention provides the following technical scheme: a production process method of a paper pulp molding product with micro anti-counterfeiting information comprises the following steps:
step one, raw material selection: selecting plant fibers such as bamboo pulp, sugarcane pulp, wood pulp and the like as raw materials, wherein the raw materials are 85-92 wt% in general, and the water content is 8-15 wt%; the selected raw materials should not mildew, and the raw materials need to be screened before the materials are scattered to prepare the pulp, so that the impurities, the abnormal color points and the like of the pulp molding after the pulp is manufactured are reduced.
Step two, anti-counterfeiting information: the anti-counterfeiting information mainly comprises miniature information, preferably 1-5 letters or simple characters, and the miniature size, preferably 1mm in height of the characters, so as to ensure the effect of a final product; after the selected letters or simple characters are selected, the selected texture mark lines are engraved on the surface of the raised character mark, and after the letters or the simple characters are copied by other external manufacturers, the sizes of all angles of the textures cannot be copied, so that the anti-counterfeiting information effect is improved, and the range of the selected textures is 0.1mm x 0.2 mm.
Step three, processing the die: processing a suction filter mould, a forming mould, a hot pressing mould and the like required by production according to the requirements of normal paper pulp molded products; processing micro anti-counterfeiting information on a hot-pressing die corresponding to the front surface of the product, polishing the surface of the hot-pressing die, carving the position of the micro information at the position corresponding to the micro information by adopting a laser micro-carving mode or other micro-carving technologies, wherein the information graph and text are convex parts, other parts are carved into grooves, and the depth of the groove is preferably 0.5 mm; the lower part of the convex part is wide and the upper part is narrow, so that the demoulding is convenient; and carving the selected texture on the surface of the raised character mark.
Step four, preparation: dispersing, proportioning and pulping the raw materials to prepare required slurry; after suction filtration and compression molding, preparing a wet blank; the water content of the wet blank is generally 55wt% -70wt%, the wet blank is easy to be pressed into pictures and texts, the wet blank is transferred into a hot pressing die with micro information, after the hot pressing die and the lower die are closed, the micro information is impressed on the surface of the wet blank of the paper pulp molding product under certain pressure and temperature, after drying and shaping, the water content of the final product is generally within 10wt%, and at the moment, the surface of the paper pulp molding product has a micro anti-counterfeiting mark with a concave outer frame and a convex character information.
And step five, observation: the surface of the prepared final product is provided with a miniature anti-counterfeiting mark with a concave outer frame and a convex character information, and the anti-counterfeiting information and the texture can be read by a magnifying glass of which the magnification is 5-20 times.
Preferably, in the fourth step, when the mold is subjected to compression molding, the compression molding pressure is 80KPa to 850 KPa.
Preferably, in the third step, in order to protect the packaged object and achieve the aesthetic effect, the pulp molded product has at least one surface with highest processing precision requirement and the flattest surface, namely the front surface, and preferably a small area with the size of 5mm by 5mm on the flat bottom position on the plane.
Preferably, in the third step, when the coating such as teflon and the like on the surface of the hot pressing die is made, the coating thickness in the range of 0.01mm-0.05mm is preferably selected for the micro information area, and the micro information area is polished to be smooth, so that the clear concave-convex boundary is ensured.
Preferably, the die comprises a lower die 1, wherein an upper die 2 is arranged at the top of the lower die 1, a cavity 3 is arranged in the lower die 1, a marking block 4 is arranged at the bottom surface of the cavity 3, an enclosing ring 5 is arranged on the inner side wall of the cavity 3, a clamping block 6 is arranged on the outer side of the enclosing ring 5, and a sliding groove 7 is arranged on the outer side of the lower die 1; the mark block 4 is carved with miniature anti-counterfeiting information.
Preferably, the molding is provided with a micro anti-counterfeiting information icon, and the micro anti-counterfeiting information icon is used for generating micro anti-counterfeiting information on the pulp molding product.
The invention has the technical effects and advantages that:
1. the invention does not introduce any other materials, does not change the degradable and recyclable effect of the pulp molding product;
2. the invention can read the micro anti-counterfeiting information by means of the magnifying glass;
3. the micro information engraved on the mould of the invention requires high processing precision, and simultaneously, the control requirement of the production process of the paper pulp molding product is also high, thereby having a certain technical barrier, increasing the counterfeiting cost and the technical difficulty, and having good anti-counterfeiting effect;
4. the invention is provided with a micro anti-counterfeiting information carving area on the mould, and after the upper mould and the lower mould are closed, the wet blank of the paper pulp moulding product is extruded, so that micro anti-counterfeiting information is left on the surface of the product, and after drying and shaping, stable and firm concave-convex micro anti-counterfeiting information is obtained.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
in the figure: 1 lower die, 2 upper die, 3 cavity, 4 marking block, 5 surrounding ring, 6 fixture block, 7 spout.
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:
a production process method of a paper pulp molding product with micro anti-counterfeiting information comprises the following steps:
step one, material selection: 88 wt% of mixed materials of bamboo pulp, sugarcane pulp and wood pulp are selected, the balance is 12 wt% of water, the selected raw materials do not have to be mildewed, the raw materials need to be screened before the materials are scattered to be made into pulp, and impurities of the manufactured pulp molding are reduced;
step two, preparation: the method has the effects of pulping, blending, compression molding, drying and shaping raw materials, and after the raw materials are manufactured, a wet blank is manufactured, the water content existing on the molding surface of the wet blank is 62 wt%, and the water content of a finally prepared product is 2 wt%;
step three, processing the die: after the surface of the molding is polished, carving the position of the miniature anti-counterfeiting information on the paper pulp molding product in a laser micro-carving mode at the position corresponding to the miniature anti-counterfeiting information, wherein the information graph and text are convex parts, and other parts are carved into grooves; the lower width and the upper width of the convex part are convenient for demoulding, the miniature anti-counterfeiting information is 1 letter or simple character, and the size of the miniature anti-counterfeiting information is 0.01 mm; the anti-counterfeiting information can be read by a magnifying glass, the depth of the groove is 0.5mm, Teflon coatings are arranged on the surfaces of the lower die and the upper die, the thickness of the coating within 0.01mm is preferably selected for a micro information area, the coating is polished to be flat, the concave-convex boundary is clear, in order to protect a packaged object and achieve the effect of attractiveness, at least one surface of a pulp molded product has the highest requirement on processing precision, the surface is the most flat, the pulp molded product is called as a front surface, a small block with the size of 5mm x 5mm is preferably selected at the flat bottom position on the plane;
step four, observation and index: in the production process of a molded product, the wet blank of the product entering a hot-pressing mold has high moisture, the hot-pressing mold with the micro information presses the micro information on the surface of the pulp molded product at a certain pressure and temperature, after drying and shaping, the surface of the product has a micro anti-counterfeiting mark with a concave outer frame and a convex character information, and when the molding is subjected to compression molding, the molding pressure is 80 KPa;
step five, anti-counterfeiting information: after the selected letters or simple characters are selected, the selected texture mark patterns are engraved on the surface of the convex character mark, the size of the texture range is 0.1mm x 0.2mm, the micro anti-counterfeiting information is arranged in a plane area of the pulp molding product, and the size of the plane area is 5mm x 5 mm.
The invention also provides a paper pulp molding product with the micro anti-counterfeiting information, wherein the paper pulp molding product is provided with the micro anti-counterfeiting information;
a paper pulp molding with micro anti-counterfeiting information comprises a lower die 1, wherein an upper die 2 is arranged at the top of the lower die 1, a cavity 3 is arranged in the lower die 1, a marking block 4 is arranged on the bottom surface of the cavity 3, an enclosing ring 5 is arranged on the inner side wall of the cavity 3, a clamping block 6 is arranged on the outer side of the enclosing ring 5, and a sliding groove 7 is arranged on the outer side of the lower die 1; be provided with miniature anti-fake information on the mark piece 4, place paper pulp inside 3 cavities, then will go up mould 2 and erect at 1 top of lower mould through spout 7 to compress paper pulp, then mark piece 4 is protruding the back with the paper pulp bottom, wait to the cooling back, will go up mould 2 and draw the back, take out the paper pulp molding through surrounding ring 5, increase the effect of separating of paper pulp molding.
Example 2:
a production process method of a paper pulp molding product with micro anti-counterfeiting information comprises the following steps:
step one, material selection: selecting 92wt% of bamboo pulp, sugarcane pulp and wood pulp mixed material, and 8wt% of water in balance, wherein the selected raw materials should not mildew, and the raw materials need to be screened before the materials are scattered to prepare pulp, so that impurities of the manufactured pulp molding are reduced;
step two, preparation: the method has the effects of pulping, blending, compression molding, drying and shaping the raw materials, and after the raw materials are manufactured, a wet blank is manufactured, the water content existing on the molding surface of the wet blank is 68 wt%, and the water content of the finally prepared product is 5 wt%;
step three, processing the die: after the surface of the molding is polished, carving the position of the miniature anti-counterfeiting information on the paper pulp molding product in a laser micro-carving mode at the position corresponding to the miniature anti-counterfeiting information, wherein the information graph and text are convex parts, and other parts are carved into grooves; the lower width and the upper width of the convex part are convenient for demoulding, the miniature anti-counterfeiting information is 5 letters or simple characters, and the size of the miniature anti-counterfeiting information is 5 mm; the anti-counterfeiting information can be read by a magnifying glass, the depth of the groove is 5mm, Teflon coatings are arranged on the surfaces of the lower die and the upper die, the thickness of the coating is preferably within 0.05mm in a micro information area, the coating is polished to be flat, the concave-convex boundary is clear, in order to protect the packaged object and achieve the effect of attractiveness, at least one surface of the pulp molded product has the highest processing precision requirement, the surface is the flattest, the pulp molded product is called as a front surface, preferably, a small block with the size of 5mm and 5mm is arranged on the flat bottom of the plane;
step four, observation and index: in the production process of a molded product, the wet blank of the product entering a hot-pressing mold has high moisture, the hot-pressing mold with the micro information presses the micro information on the surface of the pulp molded product at a certain pressure and temperature, after drying and shaping, the surface of the product has a micro anti-counterfeiting mark with a concave outer frame and a convex character information, and when the molding is subjected to compression molding, the molding pressure is 850 KPa;
step five, anti-counterfeiting information: after the selected letters or simple characters are selected, the selected texture mark patterns are engraved on the surface of the convex character mark, the size of the texture range is 0.1mm x 0.2mm, the micro anti-counterfeiting information is arranged in a plane area of the pulp molding product, and the size of the plane area is 5mm x 5 mm.
The invention also provides a paper pulp molding product with the micro anti-counterfeiting information, wherein the paper pulp molding product is provided with the micro anti-counterfeiting information;
a paper pulp molding with micro anti-counterfeiting information comprises a lower die 1, wherein an upper die 2 is arranged at the top of the lower die 1, a cavity 3 is arranged in the lower die 1, a marking block 4 is arranged on the bottom surface of the cavity 3, an enclosing ring 5 is arranged on the inner side wall of the cavity 3, a clamping block 6 is arranged on the outer side of the enclosing ring 5, and a sliding groove 7 is arranged on the outer side of the lower die 1; be provided with miniature anti-fake information on the mark piece 4, place paper pulp inside 3 cavities, then will go up mould 2 and erect at 1 top of lower mould through spout 7 to compress paper pulp, then mark piece 4 is protruding the back with the paper pulp bottom, wait to the cooling back, will go up mould 2 and draw the back, take out the paper pulp molding through surrounding ring 5, increase the effect of separating of paper pulp molding.
Example 3:
a production process method of a paper pulp molding product with micro anti-counterfeiting information comprises the following steps:
step one, material selection: selecting 90 wt% of bamboo pulp, sugarcane pulp and wood pulp mixed material, and 10wt% of water in balance, wherein the selected raw materials should not mildew, and the raw materials need to be screened before the materials are scattered to prepare pulp, so that impurities of the manufactured pulp molding are reduced;
step two, preparation: the method has the effects of pulping, blending, compression molding, drying and shaping raw materials, and after the raw materials are manufactured, a wet blank is manufactured, the water content existing on the molding surface of the wet blank is 65 wt%, and the water content of a finally prepared product is 3 wt%;
step three, processing the die: after the surface of the molding is polished, carving the position of the miniature anti-counterfeiting information on the paper pulp molding product in a laser micro-carving mode at the position corresponding to the miniature anti-counterfeiting information, wherein the information graph and text are convex parts, and other parts are carved into grooves; the lower width and the upper width of the convex part are convenient for demoulding, the miniature anti-counterfeiting information is 3 letters or simple characters, and the size of the miniature anti-counterfeiting information is 3 mm; the anti-counterfeiting information can be read by a magnifying glass, the depth of the groove is 3mm, Teflon coatings are arranged on the surfaces of the lower die and the upper die, the thickness of the coating is preferably within 0.03mm in a micro information area, the coating is polished to be flat, the concave-convex boundary is clear, the packaged object is protected to achieve the effect of beauty, at least one surface of the pulp molded product has the highest processing precision requirement, the surface is the flattest, the pulp molded product is called as a front surface, preferably a small block with the size of 5mm and 5mm is arranged on the flat bottom of the plane;
step four, observation and index: in the production process of a molded product, the moisture of a wet blank of the product entering a hot-pressing mold is higher, the hot-pressing mold with the micro information presses the micro information on the surface of the pulp molded product at a certain pressure and temperature, after drying and shaping, the surface of the product has a micro anti-counterfeiting mark with a concave outer frame and a convex character information, and when the molding is subjected to compression molding, the molding pressure is 460 KPa;
step five, anti-counterfeiting information: after the selected letters or simple characters are selected, the selected texture mark patterns are engraved on the surface of the convex character mark, the size of the texture range is 0.1mm x 0.2mm, the micro anti-counterfeiting information is arranged in a plane area of the pulp molding product, and the size of the plane area is 5mm x 5 mm.
The invention also provides a paper pulp molding product with the micro anti-counterfeiting information, wherein the paper pulp molding product is provided with the micro anti-counterfeiting information;
a paper pulp molding with micro anti-counterfeiting information comprises a lower die 1, wherein an upper die 2 is arranged at the top of the lower die 1, a cavity 3 is arranged in the lower die 1, a marking block 4 is arranged on the bottom surface of the cavity 3, an enclosing ring 5 is arranged on the inner side wall of the cavity 3, a clamping block 6 is arranged on the outer side of the enclosing ring 5, and a sliding groove 7 is arranged on the outer side of the lower die 1; be provided with miniature anti-fake information on the mark piece 4, place paper pulp inside 3 cavities, then erect mould 2 at 1 top of lower mould through spout 7 to compress paper pulp, then mark piece 4 is protruding the back with paper pulp bottom, wait to the cooling back, will go up mould 2 and draw the back, take out the paper pulp molding through surrounding ring 5, increase the effect of separating of paper pulp molding
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the invention.
Claims (9)
1. A production process of a paper pulp molded product with micro anti-counterfeiting information is characterized by comprising the following steps: the method comprises the following steps:
step one, raw material selection: selecting bamboo pulp, sugarcane pulp and wood pulp plant fiber as raw materials, wherein the raw materials account for 85wt% -92wt%, and the water accounts for 8wt% -15 wt%;
step two, manufacturing anti-counterfeiting information: after the letters or characters used as anti-counterfeiting information are selected, the selected letters or characters are engraved on the surface of the raised character mark;
step three, processing the die: processing and producing a required suction filter mould, a forming mould and a hot pressing mould according to the requirements of normal paper pulp moulded products; after the surface of the molding is polished, carving the position of the miniature anti-counterfeiting information on the paper pulp molding product in a miniature carving mode at the position corresponding to the miniature anti-counterfeiting information, wherein the information graph and text are convex parts, and other parts are carved into grooves; the lower part of the convex part is wide and the upper part is narrow, so that the demoulding is convenient;
step four, preparation: dispersing, proportioning and pulping the raw materials to prepare required slurry; after suction filtration and compression molding, preparing a wet blank; the water content of the wet blank is 55wt% -70wt%, the wet blank is transferred into a hot-pressing die with micro information, after the hot-pressing die and the lower die are closed, the micro information is impressed on the surface of the wet blank of the paper pulp molded product under a certain pressure and temperature, after drying and shaping, the water content of the final molded product is within 10wt%, and at the moment, the micro anti-counterfeiting mark with concave outer frame and convex character information is formed on the surface of the paper pulp molded product.
2. The process for producing a pulp molded product with micro anti-counterfeiting information according to claim 1, wherein the process comprises the following steps: in the second step, the micro anti-counterfeiting information is 1-5 letters or simple characters.
3. The process for producing a pulp molded product with micro anti-counterfeiting information according to claim 2, wherein the process comprises the following steps: in the second step, the size of the miniature anti-counterfeiting information is 0.01mm-5 mm; the anti-counterfeiting information can be read by a magnifying glass.
4. The process for producing a pulp molded product with micro anti-counterfeiting information according to claim 1, wherein the process comprises the following steps: in the third step, the depth of the groove is 0.5mm-5 mm.
5. The process for producing a pulp molded product with micro anti-counterfeiting information according to claim 1, wherein the process comprises the following steps: in the second step, the size of the letter or character texture mark range is 0.1mm by 0.2 mm.
6. The pulp molded product with the micro anti-counterfeiting information manufactured by the pulp molded product manufacturing process according to any one of claims 1 to 5, characterized in that: the paper pulp molding product is provided with micro anti-counterfeiting information.
7. The pulp molded article according to claim 6, characterized in that: the micro anti-counterfeiting information is arranged in a plane area of the pulp molding product, and the size of the plane area is 5mm by 5 mm.
8. The pulp mould of the production process of the pulp moulded product with the micro anti-counterfeiting information according to the claim 1, is characterized in that: including lower mould (1), lower mould (1) top is equipped with mould (2), lower mould (1) inside is equipped with cavity (3), cavity (3) bottom surface is equipped with mark piece (4), cavity (3) inside wall is equipped with surrounding ring (5), the surrounding ring (5) outside is equipped with fixture block (6), lower mould (1) outside is equipped with spout (7).
9. The pulp mould of the production process of the pulp moulded product with the micro anti-counterfeiting information according to claim 8, characterized in that: the mark block is provided with a miniature anti-counterfeiting information icon, and the miniature anti-counterfeiting information icon is used for generating miniature anti-counterfeiting information on the pulp molding product.
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| CN201810786021.9A CN109162151B (en) | 2018-07-17 | 2018-07-17 | Production process method of paper pulp molded product with micro anti-counterfeiting information |
| CN202010291924.7A CN111608023B (en) | 2018-07-17 | 2018-07-17 | Paper pulp moulded product with micro anti-fake information and its producing mould |
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| CN111608023A (en) | 2020-09-01 |
| CN111608023B (en) | 2022-05-27 |
| CN109162151A (en) | 2019-01-08 |
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