WO2022179177A1

WO2022179177A1 - Inline printing-based eco-friendly holographic laser positioning packaging material and manufacturing method therefor

Info

Publication number: WO2022179177A1
Application number: PCT/CN2021/129293
Authority: WO
Inventors: 朱立纲; 陈洋; 刘伟; 喻方清
Original assignee: 上海紫江喷铝环保材料有限公司; 安徽紫江喷铝环保材料有限公司
Priority date: 2021-02-26
Filing date: 2021-11-08
Publication date: 2022-09-01
Also published as: CN113026419A

Abstract

An inline printing-based eco-friendly holographic laser positioning packaging material and a manufacturing method therefor. The packaging material comprises base paper; a biodegradable material layer is provided on the surface of the base paper; a degradation cavity is formed between the base paper and the biodegradable material layer; a micro capsule is provided in the degradation cavity; and a degradation preparation for catalyzing the degradation of the biodegradable material layer is provided in the micro capsule. The manufacturing method comprises embedding the degradation preparation, and fixing the micro capsule on the surface of the base paper; forming the biodegradable material layer on the surface of the base paper by means of coating; plating aluminum on the surface of the biodegradable material layer to form an aluminum layer; performing laser molding on the surface of the aluminum layer to form a laser pattern and a positioning cursor; performing continuous registration printing on the surface of the aluminum layer on the basis of the positioning cursor to form a printing layer; and performing surface treatment on the surface of the printing layer to form a surface treatment layer. The obtained packaging material is easy to degrade.

Description

Inline-printed environmentally friendly holographic laser positioning packaging material and manufacturing method thereof

This application claims the priority of the Chinese patent application filed on February 26, 2021 with the application number CN202110217341.1 and the title of the invention is "Environmentally-friendly holographic laser positioning packaging material printed by connection and its production method", which The entire contents of this application are incorporated by reference.

technical field

The present application relates to the field of product packaging, in particular to an environmentally friendly holographic laser positioning packaging material printed in line and a manufacturing method thereof.

Background technique

Packaging materials refer to the materials used in the manufacture of packaging containers, packaging and decoration, packaging printing, packaging and transportation, etc. to meet product packaging requirements, including metal, plastic, glass, ceramics, paper, bamboo, wild mushrooms, natural fibers, Main packaging materials such as chemical fibers and composite materials, as well as auxiliary materials such as coatings, adhesives, strapping tapes, decoration, and printing materials.

In the related art, the Chinese patent with the publication number CN104129566A discloses a packaging material, which relates to the field of packaging materials. Airbags are provided, and the surface connecting the flame-retardant layer and the cardboard layer is provided with patterns. This packaging material has strong flame retardancy, good cushioning and excellent sterilization performance.

In view of the above-mentioned related technologies, the inventors believe that the above-mentioned packaging materials are not easily degradable and easily lead to environmental pollution.

SUMMARY OF THE INVENTION

In order to improve the degradation performance of the packaging material, the present application provides an environmentally friendly holographic laser positioning packaging material printed in-line and a manufacturing method thereof.

In the first aspect, the application provides an environmentally friendly holographic laser positioning packaging material for in-line printing, using the following technical solutions:

An in-line printed environmentally friendly holographic laser positioning packaging material, comprising a backing paper, a degradable material layer is arranged on the surface of the backing paper, a degradation cavity is arranged between the backing paper and the degradation material layer, and the degradation cavity is A microcapsule is arranged in the cavity, and a degrading preparation for catalyzing the degradation of the degradable material layer is arranged in the microcapsule.

By adopting the above technical solution, the degradable material layer can be easily degraded while improving the mechanical strength of the backing paper. When buried in the soil, the microorganisms and bacteria in the soil will degrade the degradable material layer, causing it to decompose and be directly absorbed by the soil. The microcapsules arranged in the degradation cavity and the degradable preparations in the microcapsules can increase the degradable preparations required by the degradable materials when the packaging materials are buried in the soil, thereby promoting the packaging materials. The degradation of the material enables the degradation of the soil without the bacteria required for the degradation of the degrading material.

Preferably, the base paper is white cardboard, coated paper or kraft paper.

Preferably, the degradable material layer is a polylactic acid layer, and the degradable preparation includes Rhizopus sp. lipase.

By adopting the above technical solution, polylactic acid is a new type of biodegradable material, which can be completely degraded by microorganisms in nature after use, and finally generates carbon dioxide and water, which does not pollute the environment, which is very beneficial to protecting the environment and is recognized as an environmentally friendly material. Among the enzymes that degrade polylactic acid, Rhizopus lipase is the enzyme with the best degradation effect, thereby improving the degradation efficiency of packaging materials; on the other hand, polylactic acid has good mechanical and physical properties, and has good Therefore, its coating on the surface of the bottom paper can improve the strength of the packaging material and improve the antibacterial and antifungal properties of the packaging material.

Preferably, the degradation preparation (121) further comprises amylase and cellulase. Amylase can promote the degradation and decomposition of starch adhesive used in microcapsules, while cellulase can promote the degradation of the bottom paper and improve the degradation rate of other parts of the packaging material.

Preferably, the wall material of the microcapsules (12) is sodium alginate.

Preferably, the surface of the base paper is provided with embedded grooves along its length direction, and the microcapsules are embedded in the embedded grooves.

By adopting the above technical solution, since the enzyme preparation has a certain biological activity, its structure will be destroyed and its activity will be lost after extrusion, so the enzyme preparation needs to be effectively protected, and the bottom paper will be under pressure during use. Therefore, embedding the microcapsules in the embedded grooves can effectively protect the microcapsules and prevent the microcapsules from being broken by pressure during use, thereby effectively protecting the microcapsules and the enzyme preparation inside the microcapsules.

Preferably, an aluminum layer is provided on the surface of the degradable material layer, and a laser information layer is provided on the surface of the aluminum layer away from the degradable material layer.

By adopting the above technical solution, the aluminum layer formed on the surface of the degradable material layer by vacuum evaporation can make the packaging material have metallic luster, and the aluminum layer can be plated on the degradable material layer by the transfer method of aluminum plating; The laser information layer can generate radiant laser patterns and laser characters, and at the same time can improve the anti-counterfeiting effect of packaging materials.

Preferably, a positioning pattern is provided on the surface of the laser information layer, and a printing layer is provided on the surface of the laser information layer away from the aluminum layer.

By adopting the above technical solution, the setting of the positioning pattern facilitates the production of positioning marks on the surface of the laser information layer that are required in the process of in-line printing. Based on the positioning marks, various colors of packaging are printed on the surface of the laser information layer by register printing. Patterns, thereby improving the style of packaging materials, easy to attract the attention of customers.

Preferably, a surface treatment layer is provided on the surface of the printing layer away from the laser information layer.

By adopting the above technical solutions, the provision of the surface treatment layer improves the properties of the surface of the packaging material, so that the surface of the packaging material is wear-resistant, non-fading, water-repellent, and oil-repellent, and has a better tactile feel during use.

Preferably, the surface treatment layer (6) is varnish or flocking.

In the second aspect, the present application provides a method for making an environmentally friendly holographic laser positioning packaging material applied to in-line printing, using the following technical solutions:

A production method of an environmentally-friendly holographic laser positioning packaging material printed in line, comprising:

Embed the degradable preparation and fix the microcapsules on the surface of the bottom paper;

A degradable material layer is formed on the surface of the bottom paper by lamination.

Preferably, it also includes:

Coating aluminum on the surface of the degradable material layer to form an aluminum layer;

Laser molding is performed on the surface of the aluminum layer to form a laser pattern and position the cursor;

The printed layer is formed by continuous register printing on the surface of the aluminum layer based on the positioning cursor; and,

Surface treatment is performed on the surface of the printing layer to form a surface treatment layer.

By adopting the above technical solution, microcapsules with degradable preparations are added on the surface of the base paper, and a degradable material layer to improve the strength of the base paper is formed on the surfaces of the base paper and the microcapsules, and the packaging materials can be directly buried in the soil after they are discarded. , with the aid of the degrading agent, the degradable material layer can be rapidly degraded to generate substances that are harmless to the soil environment, thereby improving the degradation performance of the packaging material; on the other hand, the surface of the degradable material is aluminized and formed by laser molding The surface has a brilliant metallic luster, and at the same time, the printing layer can be printed as required by positioning the cursor, which can add the pattern effect of the packaging material; finally, the finished product of the packaging material is formed through surface treatment, so that the surface of the packaging material has a better texture, making the packaging material The material is wear-resistant, non-fading, water-repellent and oil-repellent, which improves the quality of packaging materials.

Preferably, the embedding and fixing the degradable preparation on the surface of the bottom paper include:

The degradable preparation is fixed in water-soluble microcapsules by the method of microencapsulation;

An embedded groove is set on the surface of the bottom paper, and the microcapsules are evenly sprinkled on the surface of the bottom paper; and,

Scrape the microcapsules on the surface of the bottom paper, so that the microcapsules fall into the embedded grooves and fix the microcapsules in the embedded grooves.

By adopting the above technical solution, since the surface of the degradable material layer needs to be molded during the aluminizing process to form the laser information layer, if the microcapsules are attached to the surface of the base paper, there will inevitably be a gap between the degradable material layer and the base paper. During molding, the microcapsules will be broken under pressure extrusion, resulting in the inactivation of the enzyme preparations in the microcapsules; and the embedded grooves on the surface of the bottom paper can embed the microcapsules therein, so as to accommodate the microcapsules , to prevent the microcapsules from breaking.

Preferably, the fixing the microcapsules in the embedded grooves includes:

Spray the starch solution on the surface of the liner; and,

The backing paper is rapidly heated to solidify the starch solution to hold the microcapsules in place.

By adopting the above technical solution, the starch solution will be gelatinized at high temperature and transformed into a colloid. The gelatinized starch solution has a relatively large viscosity, and the microcapsules can be glued and fixed in the embedded groove after cooling and solidification. , and the starch solution will not pollute the environment, and can be rapidly degraded after use, and will not pollute the environment.

Preferably, forming an aluminum layer by plating aluminum on the surface of the degradable material layer includes:

Through the transfer method, the PET film or laser PET film is placed on the glued horse paper or cardboard for compounding, and then the PET film is peeled off. During this process, the PET film can be used repeatedly, and the aluminum molecular layer is transferred to the degradable material layer through the adhesive effect. Thereby, an aluminum layer is formed.

Preferably, performing laser molding on the surface of the aluminum layer to form a laser pattern and positioning the cursor includes:

Design the laser pattern, make a plate with the set laser pattern, wrap the laser plate on the laser molding machine, control the temperature and pressure, mold the laser pattern onto the surface of the aluminum layer to form the laser pattern and position the cursor.

Preferably, the continuous register printing on the surface of the aluminum layer based on the positioning cursor to form the printing layer includes:

Continuous registration printing is performed according to the position of the positioning cursor extruded by the laser die, and the promotional pattern of the packaging material is printed on the surface of the aluminum layer.

Preferably, the surface treatment includes varnish or flocking.

By adopting the above technical solution, varnish or flocking on the surface of the printing layer can form a protective layer on the surface of the printing layer, so that the surface of the packaging material is wear-resistant, non-fading, water-repellent, and oil-repellent. Has a better tactile feel.

To sum up, the present application includes at least one of the following beneficial technical effects:

1. By adopting the technology of degradable material layer, degradable cavity, microcapsule and degradable preparation, the degradation performance of packaging material is improved, and it is more green and environmentally friendly;

2. By adopting the technology of cooperating with embedded strip groove, polylactic acid layer and Rhizopus lipase, it is convenient to protect the Rhizopus lipase, thereby ensuring the activity of the enzyme preparation;

3. By using the technology of aluminum layer, laser information layer, positioning pattern, printing layer and surface treatment layer, it is convenient to improve the appearance of packaging materials and significantly improve the quality of packaging materials.

Instruction drawings

Fig. 1 is the structural representation of the environmental protection holographic laser positioning packaging material of a kind of in-line printing according to the embodiment of the present application;

Fig. 2 is the enlarged schematic diagram of the structure at A place in Fig. 1;

3 is a flow chart of a method for producing an environmentally-friendly holographic laser positioning packaging material printed in-line in an embodiment of the present application;

FIG. 4 is a flow chart of sub-steps of step S100 in the embodiment of the present application;

FIG. 5 is a flowchart of sub-steps of step S130 in the embodiment of the present application;

Explanation of reference numerals: 1. Bottom paper; 11. Embedded grooves; 12. Microcapsules; 121. Degradable preparation; 2. Degradable material layer; 3. Aluminum layer; 4. Laser information layer; 5. Printing layer; 6 , Surface treatment layer.

Detailed ways

The present application will be further described in detail below in conjunction with accompanying drawings 1-5.

The embodiment of the present application discloses an environmentally friendly holographic laser positioning packaging material printed in line. Referring to Fig. 1 , the environmentally-friendly holographic laser positioning packaging material printed in line includes a backing paper 1, and the backing paper 1 can be one of white cardboard, coated paper or kraft paper.

A degradable material layer 2 is formed on the surface of the base paper 1 by coating, and the degradable material layer 2 is a polylactic acid layer. The polylactic acid can naturally degrade in the environment while improving the tensile strength of the backing paper 1, thereby improving the degradability of the packaging material.

Referring to FIG. 2 , the surface of the backing paper 1 is provided with embedded grooves 11 along its length direction, and a degradation cavity is formed between the embedded groove 11 and the degradable material layer 2 . The microcapsules 12 are glued and fixed in the degradation cavity, the microcapsules 12 are embedded in the embedded grooves 11, and the wall material of the microcapsules 12 is sodium alginate. The microcapsules 12 are embedded with a degradation preparation 121 that catalyzes the degradation of the degradable material layer 2. The degradation preparation 121 includes a lipase preparation of the genus Rhizopus, preferably also includes amylase, cellulase, and in various enzymes that degrade polylactic acid. Among them, Rhizopus lipase has the strongest ability to degrade polylactic acid, and Rhizopus lipase can degrade polylactic acid and generate carbon dioxide and water, thereby improving the degradation rate of packaging materials. Amylase can promote the degradation and decomposition of the starch adhesive used in the microcapsules 12 , and cellulase can promote the degradation of the bottom paper 1 , thereby increasing the degradation rate of other parts of the packaging material.

Referring to FIG. 1, the surface of the degradable material layer 2 is plated with an aluminum layer 3 by vacuum evaporation technology. By the transfer method, the PET film or the laser PET film is placed on the glued horse paper or cardboard for compounding, and then the PET film is peeled off, and the aluminum molecules are removed. The layer is transferred to the degraded material layer 2 by gluing, thereby forming the aluminium layer 3 .

A laser information layer 4 is formed on the surface of the aluminum layer 3 away from the degradable material layer 2 by a laser holographic molding machine. The laser information layer 4 includes design contents such as the brand, product features, and functions of the packaged product. Through the combination of various holographic laser effects such as multi-angle hologram, true color hologram, miniature text hologram, precise banknote line hologram, coaxial off-axis lens hologram, matte white embossed hologram, etc., all the originally printed elements are passed through the hologram. Laser-engraved and formed on the aluminum layer 3 by embossing.

Referring to FIG. 1 , a positioning pattern is formed on the surface of the laser information layer 4 by molding, and the positioning pattern is used for positioning when printing the surface of the aluminum layer 3 . The positioning pattern generally adopts a cross to ensure the accuracy of the positional coincidence of any two-color image during multi-color overprinting.

A printing layer 5 is formed on the surface of the laser information layer 4 away from the aluminum layer 3 by printing, and the printing layer 5 is formed by multi-color overprinting, including the packaging information, design drawings and publicity drawings of the products.

Referring to FIG. 1 , the surface of the printing layer 5 away from the laser information layer 4 is provided with a surface treatment layer 6 . The surface treatment layer 6 may be varnish or flocking, and in this embodiment, varnish is preferred. A layer of varnish is coated on the surface of the laser information layer 4, thereby improving the gloss, abrasion resistance and water resistance of the surface of the packaging material.

The implementation principle of an environmentally friendly holographic laser positioning packaging material printed in line in the embodiment of the present application is as follows:

When the packaging material needs to be degraded, a plurality of holes can be made on the surface of the packaging material, and then the packaging material can be buried in the soil. Moisture in the soil dissolves the sodium alginate so that the degradable preparation 121 inside the microcapsules 12 recovers its activity.

The Rhizopus lipase inside the microcapsules 12 can degrade polylactic acid, while amylase can promote the degradation of the adhesive of the microcapsules 12, and cellulase can promote the degradation of the bottom paper 1, which significantly improves the degradation efficiency of the packaging paper. .

The embodiment of the present application also discloses a method for producing an in-line printed environmentally friendly holographic laser positioning packaging material. Referring to Fig. 3, the production method of the environmentally friendly holographic laser positioning packaging material printed in line includes:

S100, embedding the degradable preparation 121 and fixing the microcapsules 12 on the surface of the bottom paper 1;

3 and 4, S100 specifically includes:

S110, fixing the degradation preparation 121 in the water-soluble microcapsules 12 by the method of microcapsule encapsulation;

The degradation preparation 121 is embedded in the microcapsules formed by sodium alginate by the water phase separation method, and after the enzyme is immobilized, a protective layer can be formed on the outer layer of the enzyme to effectively protect the enzyme, thereby maintaining the degradation preparation 121. enzyme activity.

Fixing the microcapsules 12 on the surface of the bottom paper 1 specifically includes:

S120, opening the embedded groove 11 on the surface of the base paper 1, and evenly sprinkle the microcapsules 12 on the surface of the base paper 1;

An embedded groove 11 is opened along the length direction of the bottom paper 1 , the width of the embedded groove 11 can be the diameter of two microcapsules 12 , and the depth can be the diameter of one microcapsule 12 . A plurality of embedded grooves 11 are provided along the width direction of the base paper 1 , and then the microcapsules 12 are evenly scattered on the surface of the base paper 1 .

S130, wipe the microcapsules 12 on the surface of the bottom paper 1, so that the microcapsules 12 fall into the embedded grooves 11 and fix the microcapsules 12 in the embedded grooves 11.

The surface of the backing paper 1 is wiped with a scraper, and the microcapsules 12 fall into the embedded grooves 11 under wiping, so as to be evenly distributed in the embedded grooves 11 so that the degradation efficiency can be uniform.

4 and 5 , fixing the microcapsules 12 in the embedded grooves 11 specifically includes:

S131, spray starch solution to the surface of the bottom paper 1;

The starch solution is a solution formed by dissolving water-soluble starch in water, and a small amount is sprayed between the microcapsules 12 and between the microcapsules 12 and the embedded grooves 11 .

S132 , rapidly heating the bottom paper 1 to solidify the starch solution so as to fix the microcapsules 12 .

The starch solution will be gelatinized during the heating process, and then transformed into a colloid with higher viscosity. After the colloid is cooled and solidified, the microcapsules 12 are fixed in the embedded groove 11 .

Referring to FIG. 3, S200, forming a degradable material layer 2 on the surface of the base paper 1 by laminating;

Polylactic acid is cast on the surface of the base paper 1 by a casting machine to form a layer of polylactic acid film. After the polylactic acid film is solidified, a layer of polylactic acid is formed, and polylactic acid can be degraded in the soil to generate carbon dioxide and water and directly It is absorbed by the soil, so it is environmentally friendly and will not pollute.

S300, plating aluminum on the surface of the degradable material layer 2 to form an aluminum layer 3;

Through the transfer method, the PET film or laser PET film is placed on the glued horse paper or cardboard for compounding, and then the PET film is peeled off. During this process, the PET film can be used repeatedly for many times, and the aluminum molecular layer is transferred to the degradable material through the adhesive effect. layer 2, thereby forming an aluminum layer 3.

S400, laser molding is performed on the surface of the aluminum layer 3 to form a laser pattern and a positioning cursor;

Design the laser pattern, make a plate with the set laser pattern, wrap the laser plate on the laser molding machine, control the temperature and pressure, and mold the laser pattern onto the surface of the aluminum layer 3 to form the laser pattern and position the cursor.

S500, performing continuous registration printing on the surface of the aluminum layer 3 based on the positioning cursor to form the printing layer 5;

Continuous registration printing is performed according to the position of the positioning cursor extruded by the laser die, and the promotional pattern of the packaging material is printed on the surface of the aluminum layer 3 .

S600 , performing surface treatment on the surface of the printing layer 5 to form a surface treatment layer 6 .

The surface treatment includes varnish or flocking. In this embodiment, the above varnish is taken as an example, and a layer of varnish is applied on the surface of the printing layer 5, which can be water-based varnish or oil-based varnish. This application implements In the example, it is preferably water-based varnish, and finally, the packaging material coated with varnish is dried with hot air to form.

The descriptions of the above embodiments are only used to help understand the method and the core idea of the present invention. It should be pointed out that for those skilled in the art, without departing from the principle of the present invention, several improvements and modifications can also be made to the present invention, and these improvements and modifications also fall within the protection scope of the claims of the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

An in-line printing environmentally friendly holographic laser positioning packaging material, characterized in that it comprises a backing paper (1), a degradable material layer (2) is provided on the surface of the backing paper (1), and the backing paper (1) A degradation cavity is arranged between the degradation material layer (2), a microcapsule (12) is arranged in the degradation cavity, and a degradation preparation that catalyzes the degradation of the degradation material layer (2) is arranged in the microcapsule (12). (121).
The in-line printed environmentally friendly holographic laser positioning packaging material according to claim 1, wherein the bottom paper (1) is white cardboard, coated paper or kraft paper.
The environmentally friendly holographic laser positioning packaging material printed in line according to claim 1, characterized in that: the degradable material layer (2) is a polylactic acid layer, and the degradable preparation (121) comprises Rhizopus sp. lipase .
The in-line printed environmentally friendly holographic laser positioning packaging material according to claim 3, characterized in that: the degradation preparation (121) further comprises amylase and cellulase.
The environmentally friendly holographic laser positioning packaging material printed in line according to claim 1, characterized in that: the surface of the bottom paper (1) is provided with embedded grooves (11) along its length direction, and the microcapsules (12) ) is embedded in the embedded groove (11).
The in-line printed environmentally friendly holographic laser positioning packaging material according to claim 1 or 5, wherein the wall material of the microcapsules (12) is sodium alginate.
The environmentally friendly holographic laser positioning packaging material printed by connection according to claim 1, characterized in that: the surface of the degradable material layer (2) is provided with an aluminum layer (3), and the aluminum layer (3) is far away from the degradable material layer. The surface of (2) is provided with a laser information layer (4).
The environmentally-friendly holographic laser positioning packaging material for inline printing according to claim 7, characterized in that: the laser information layer (4) is provided with a positioning pattern on the surface, and the laser information layer (4) is far away from the aluminum layer (3) The surface is provided with a printing layer (5).
The environmentally-friendly holographic laser positioning packaging material for in-line printing according to claim 8, characterized in that: a surface treatment layer (6) is provided on the surface of the printing layer (5) away from the laser information layer (4).
The in-line printed environmentally friendly holographic laser positioning packaging material according to claim 9, wherein the surface treatment layer (6) is varnish or flocking.
A method for making the environmentally-friendly holographic laser positioning packaging material of any one of claims 1-10, characterized in that, comprising:

Embed the degradable preparation (121) and fix the microcapsules (12) obtained by the embedding on the surface of the bottom paper (1);

A degradable material layer (2) is formed on the surface of the bottom paper (1) on which the microcapsules (12) are fixed by lamination.
The method for making an environmentally-friendly holographic laser positioning packaging material printed in line according to claim 11, further comprising:

Aluminium is formed on the surface of the degradable material layer (2) to form an aluminium layer (3);

Laser molding is performed on the surface of the aluminum layer (3) to form a laser pattern and a positioning cursor;

A printing layer (5) is formed by continuous register printing on the surface of the aluminum layer (3) based on the positioning cursor; and,

Surface treatment is performed on the surface of the printing layer (5) to form a surface treatment layer (6).
The method for producing an environmentally-friendly holographic laser positioning packaging material printed in line according to claim 11, wherein the embedding and fixing the degradable preparation (121) on the surface of the bottom paper (1) comprises:

The degradable preparation (121) is fixed in the microcapsules (12) dissolved in water by the method of microencapsulation;

An embedded groove (11) is provided on the surface of the bottom paper (1), and the microcapsules (12) are evenly sprinkled on the surface of the bottom paper (1); and,

Scrape the microcapsules (12) on the surface of the bottom paper (1), so that the microcapsules (12) fall into the embedded bar groove (11) and fix the microcapsules (12) in the embedded bar groove (11).
The method for producing an environmentally-friendly holographic laser positioning packaging material printed in line according to claim 13, wherein the fixing the microcapsules (12) in the embedded grooves (11) comprises:

Spray the starch solution on the surface of the backing paper (1); and,

The base paper (1) is rapidly heated to solidify the starch solution to fix the microcapsules (12).
The method for producing an environmentally-friendly holographic laser positioning packaging material printed by connection according to claim 12, wherein: forming an aluminum layer (3) by plating aluminum on the surface of the degradable material layer (2) comprises:

Through the transfer method, the PET film or laser PET film is placed on the glued horse paper or cardboard for compounding, and then the PET film is peeled off. During this process, the PET film can be used repeatedly, and the aluminum molecular layer is transferred to the degradable material layer by adhesive action ( 2), thereby forming an aluminum layer (3).
The making method of the environment-friendly holographic laser positioning packaging material of connection printing according to claim 12, is characterized in that: carry out laser molding on the surface of aluminum layer (3), forming laser pattern and positioning cursor include:

Design a laser pattern, make a plate with the set laser pattern, wrap the laser plate on a laser molding machine, control temperature and pressure, and mold the laser pattern onto the surface of the aluminum layer (3) to form the laser pattern and position the cursor.
The method for making an environmentally-friendly holographic laser positioning packaging material of in-line printing according to claim 12, wherein the printing layer (5) formed by continuous registration printing on the surface of the aluminum layer (3) based on the positioning cursor comprises:

Continuous registration printing is performed according to the position of the positioning cursor extruded by the laser die, and the promotional pattern of the packaging material is printed on the surface of the aluminum layer (3).
The method for manufacturing an in-line printed environmentally friendly holographic laser positioning packaging material according to claim 12, wherein the surface treatment includes varnish or flocking.