CN216427846U - Biodegradable composite paper and packaging paper - Google Patents
Biodegradable composite paper and packaging paper Download PDFInfo
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- CN216427846U CN216427846U CN202120970682.4U CN202120970682U CN216427846U CN 216427846 U CN216427846 U CN 216427846U CN 202120970682 U CN202120970682 U CN 202120970682U CN 216427846 U CN216427846 U CN 216427846U
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Abstract
The utility model relates to the technical field of packaging paper, in particular to biodegradable composite paper and packaging paper. The utility model discloses biodegradable composite paper, which consists of a paper base layer, an adhesive layer and a film layer which are sequentially arranged from bottom to top; the paper base layer and the film layer are compounded through an adhesive layer to form biodegradable composite paper; the film layer is made of biodegradable materials. The biodegradable composite paper provided by the utility model has a simple structure, and the packaging paper can be obtained by directly printing ink on the film layer according to the requirement of a customer on printing patterns, so that the delivery date is greatly shortened. The problem of separation and whitening of the packaging paper obtained after the printing of the ink layer and the oil layer on the surface of the biodegradable composite paper can not occur, so that the quality of the packaging paper is improved, and the packaging paper has the excellent characteristics of environmental friendliness, renewable raw materials, biodegradation and the like, and is favorable for solving the problems of energy shortage, environmental pollution and the like at present.
Description
Technical Field
The utility model relates to the technical field of packaging paper, in particular to biodegradable composite paper and packaging paper.
Background
The wrapping paper is a paper material used for packaging products or decorating, and comprises wrapping paper of a diamond-lustre paper series, a magic color paper series, a laser paper series, a glossy/matte gold silver paper series, a label paper (aluminum layer) series and the like.
The traditional preparation process of the packaging paper comprises the steps of printing ink on the surface of a paper substrate, laminating the paper substrate with a film material, and finally performing post-processing procedures, namely, the traditional packaging paper is obtained by sequentially laminating the paper substrate, the ink layer and the film layer from bottom to top. However, the materials used in the traditional packaging paper are not degradable, are not environment-friendly and not environment-friendly, pollute the environment (printing ink solvent and powder spraying), have more production processes and long production time, and have the quality problems of delamination and whitening and the like in the post-processing technology (embossing or beer line).
SUMMERY OF THE UTILITY MODEL
In view of the above, the present invention provides a biodegradable composite paper and a packaging paper, wherein the biodegradable composite paper is degradable, and the packaging paper does not have quality problems such as embossing or peeling and whitening of beer lines during post-processing.
The specific technical scheme is as follows:
the utility model provides biodegradable composite paper, which consists of a paper base layer, an adhesive layer and a film layer which are sequentially arranged from bottom to top;
the paper base layer and the film layer are compounded through an adhesive layer to form biodegradable composite paper;
the film layer is made of biodegradable materials.
In the utility model, the adhesive layer is coated between the film layer and the paper base layer, so that the film layer and the paper base layer are firmly connected. The biodegradable composite paper provided by the utility model can be directly printed with ink on the film layer according to the requirement of a customer on the printed pattern to obtain the packaging paper. According to the experimental results of the embodiment of the utility model, the packaging paper obtained by printing the ink layer and the oil layer on the surface of the biodegradable composite paper can reduce the production procedures, improve the production efficiency, improve the production environment (reduce printing ink solvents and powder spraying), is environment-friendly and fully biodegradable, avoid the problem of separation and whitening in post-processing, and improve the yield to 99%.
In the utility model, the paper base layer can be coated paper, matte powder paper, self-adhesive paper, corrugated base paper, laser paper, kraft paper, fluorescent paper, paper bag paper, aluminized paper, glass paper, bright silver paper, matte silver paper, bright gold paper, matte gold paper, aluminum foil paper, pearlescent paper, book paper or specialty paper.
The glue used for the adhesive layer is water-based dry-type laminated glue or solvent-free polyurethane laminated glue. Wherein the solvent-free polyurethane laminating adhesive is an MDI-polyalcohol polymerization system; solid content: 100 percent; viscosity: 2000-4000 mpa.s (80 ℃); density: 1.10 +/-0.10 g/m2。
In the utility model, the biodegradable material is degradable, environment-friendly and green renewable material.
The biodegradable material may be a polylactic acid (PLA) film, cellophane (natural cellulose), Polyhydroxyalkanoate (PHA) film, Polycaprolactone (PCL) film, polybutylene adipate/terephthalate (PBAT) film, or polybutylene succinate (PBS) film. Among them, polylactic acid (PLA) films are made using starch raw materials proposed by renewable plant resources such as corn. The cellophane (natural cellulose) is a film product prepared by using renewable natural fibers such as cotton pulp, wood pulp and the like as raw materials and adopting an adhesive bonding method; polyhydroxyalkanoate (PHA) film is an intracellular polyester synthesized by microorganisms, is a natural high molecular biological material, and can be processed into various film products by forming methods such as film blowing, tape casting, calendaring and the like; in order to avoid that the cellophane is easy to absorb water in air in the construction process or after being made into a finished product, so that wrinkling or bending phenomena are caused, and the quality is influenced, the cellophane with the PVDC coating (natural cellulose) on one surface is preferably selected to meet the application requirement of high-barrier performance, the natural cellulose surface of the cellophane is used as a gluing surface, and the PVDC coating surface is added to be used as a printing surface). The Polycaprolactone (PCL) film is an organic high molecular polymer with a chemical formula of (C)6H10O2) n, has the property of being well soluble in aromatic compounds, ketones and polar solvents. Is prepared from epsilon-caprolactone through ring-opening polymerization in the presence of organic metal compound (such as tetraphenyltin) as catalyst and dihydroxy or trihydroxy as trigger, and blowingProcessing into various film products by a film forming method; the PBAT film (poly (butylene adipate/terephthalate)) and the PBS film (poly (butylene succinate)) are both prepared by extracting biomass fibers from coal resources, and the thicknesses of the film materials which take natural substances as raw materials are between 15 and 150 mu m.
The biodegradable material meets degradation requirements including, but not limited to, the following international authoritative degradation certifications:
belgium OK COMPOSTABLE
& Germany (Germany DIN EN13432)
& USA (USA BPI ASTM D6400)
& Australia (Australia ABAM)
The performance of the solvent-free polyurethane laminating adhesive adopted by the adhesive layer meets but is not limited to the following health and safety regulations:
& Chinese food packaging material additive regulations (GB9685-2008)
& EU ROHS hazardous substances restriction directive
21CFR175.300 by the Food and Drug Administration (FDA)
In the utility model, the preparation method of the biodegradable composite paper comprises the following steps:
and coating glue on the surface of the film layer to form an adhesive layer, and then fixing the paper substrate on the surface of the adhesive layer to obtain the biodegradable composite paper.
In the utility model, the coating of the glue on the surface of the film layer specifically comprises the following steps:
and coating glue on the gluing surface of the thin film layer by adopting a scraper coating method for a full-automatic paper-plastic dry laminating machine by taking one surface of the thin film layer as the gluing surface.
In the utility model, the temperature of the glue applying roller of the full-automatic paper-plastic dry laminating machine is as follows: 80 ℃; oven temperature: 50 ℃; temperature of the laminating wheel: 70 ℃; pressure: 15 MPa; machine speed: 45 m/min.
In the utility model, the glue coating amount of the glue is 5g/m2。
In the utility model, the fixing of the paper substrate on the surface of the adhesive layer specifically comprises:
coating the glue on the gluing surface of the thin film layer to form the glue layer, and covering the paper base layer on the surface of the glue layer; the glue curing specifically comprises the following steps: placing in a thermostatic chamber at 50 deg.C for more than 6 hr, or in natural environment at 25 deg.C for more than 24 hr.
The utility model preferably adopts a full-automatic paper-plastic dry laminating machine, and adopts a coating film mode to laminate the paper base layer on the surface of the adhesive layer.
The utility model also provides application of the biodegradable composite paper in preparing packaging paper.
In the utility model, the packaging paper can be applied to printing paper packaging, soft package packaging, labels and electronic packaging; the packaging field of industries such as fine box, food, advertisement, cigarette case, wine box, cosmetics, electronics, medical treatment, express delivery and the like.
The utility model also provides a packaging paper, which is composed of the biodegradable composite paper, an ink layer and an oil layer which are arranged from bottom to top in sequence;
the ink layer is solidified on the surface of the biodegradable composite paper, and the oil layer is solidified on the surface of the ink layer.
In the utility model, the oil layer is gloss oil or matte oil.
The utility model also provides a preparation method of the packaging paper, which comprises the following steps:
step 1: printing ink on the surface of the biodegradable composite paper, and fixing the ink on the surface of the biodegradable composite paper by using an ultraviolet curing method;
step 2: and coating gloss oil or matte oil on the surface of the ink layer, and fixing the gloss oil or matte oil on the surface of the ink layer by using an ultraviolet curing method to form an oil layer, thereby obtaining the packaging paper.
The traditional packaging paper is obtained by printing ink on the surface of a paper substrate, laminating a film with the ink through glue after the ink is dried and solidified, and drying the glue. And the ink drying time is about 48 hours, the glue drying time is about 24 hours, the waiting time is too long, the production efficiency is reduced, the delivery period is long, and the preparation cost is increased. The biodegradable composite paper provided by the utility model can be directly printed with ink, and the ink is instantly dried and solidified by adopting an ultraviolet curing method without waiting time, so that the preparation time of the packaging paper is greatly saved, the delivery date is shortened, and the preparation cost is saved. The biodegradable composite paper provided by the utility model can be sold to customers as an independent product, and the customers can print different ink patterns according to their own requirements, so that the whole preparation process of the packaging paper is saved, and the comprehensive production cost of saving loss, manpower, equipment, waiting time, shortening delivery time and the like is about more than or equal to 25 percent.
The ultraviolet curing method adopted by the utility model can be used for curing the ink layer and the oil layer, so that the curing time of the ink and the oil is greatly shortened. The utility model adopts the ultraviolet curing method to cure the printing ink, and the used printing ink does not contain solvent, thereby realizing powder spraying-free printing and improving the printing production environment. The quality problems of separation layer whitening and the like can not occur when the biodegradable composite paper provided by the utility model is used for preparing the packaging paper, and the yield of the packaging paper can be improved to 99%.
The utility model preferably adopts a lithographic offset press to print the ultraviolet curing ink, and the ink amount is 3g/m2。
The utility model preferably adopts a lithographic offset press to coat the ultraviolet curing gloss oil or matte oil on the connecting line, and the coating weight of the gloss oil or the matte oil is 4g/m2。
In the present invention, the room temperature is 25. + -. 5 ℃.
According to the technical scheme, the utility model has the following advantages:
the utility model provides biodegradable composite paper, which is composed of a paper base layer, an adhesive layer and a film layer which are arranged from bottom to top in sequence; the paper base layer and the film layer are compounded through the adhesive layer to form the biodegradable composite paper.
The biodegradable composite paper provided by the utility model has a simple structure, and the packaging paper can be obtained by directly printing ink on the film layer according to the requirement of a customer on printing patterns, so that the delivery date is greatly shortened. The problem of separation and whitening of the packaging paper obtained after the printing of the ink layer and the oil layer on the surface of the biodegradable composite paper can not occur, so that the quality of the packaging paper is improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive exercise.
FIG. 1 is a schematic structural diagram of a composite paper provided in an embodiment of the present invention;
wherein the illustration is as follows:
1. a paper substrate; 2. an adhesive layer; 3. a thin film layer.
Detailed Description
In order to make the objects, features and advantages of the present invention more obvious and understandable, the technical solutions in the embodiments of the present invention will be clearly and completely described below, and it should be apparent that the embodiments described below are only a part of the embodiments of the present invention, and not all 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.
The embodiment 1 of the utility model adopts a full-automatic paper-plastic dry laminating machine, and the comparative example adopts the full-automatic dry laminating machine. The reason why the machines selected in the examples and the comparative examples are different is that: the full-automatic paper-plastic dry laminating machine is only suitable for a reel material to a reel material, the composite paper of the embodiment can adopt a reel paper base layer to be laminated with a film rolling material, the comparative example can only carry out the laminating processing of a single printed matter and the film rolling material, and the full-automatic dry laminating machine can only be used for the laminating processing contrast.
Referring to fig. 1, a schematic structural diagram of a composite paper provided in an embodiment of the present invention is shown.
The embodiment of the utility model provides biodegradable composite paper, which consists of a paper base layer 1, an adhesive layer 2 and a film layer 3 which are sequentially arranged from bottom to top.
The paper base layer 1 and the film layer 3 are compounded through the adhesive layer 2 to form biodegradable composite paper, that is, in the embodiment of the utility model, the paper base layer 1 and the film layer 3 are fixed through the adhesive layer.
The film layer 3 is a biodegradable material.
Further, the paper base layer 1 may be coated paper, matte powder paper, self-adhesive paper, corrugated medium, laser paper, kraft paper, fluorescent paper, paper bag paper, aluminized paper, glassine paper, bright silver paper, matte silver paper, bright gold paper, matte gold paper, aluminum foil paper, pearlescent paper, book paper or specialty paper.
Further, the glue used for the adhesive layer 2 is water-based dry-type laminating glue or solvent-free polyurethane laminating glue.
Further, the biodegradable material is selected from polylactic acid film, cellophane, polyhydroxyalkanoate film, polycaprolactone film, polybutylene adipate/terephthalate film or polybutylene succinate film.
The embodiment of the utility model also provides packaging paper, which comprises the biodegradable composite paper, an ink layer and an oil layer.
The ink layer is solidified on the surface of the biodegradable composite paper, and the oil layer is solidified on the surface of the ink layer.
Specifically, the ink layer is cured on the surface of the film layer 3 of the biodegradable composite paper, and the oil layer is cured on the surface of the ink layer. That is, from the bottom up sets gradually paper basic unit 1, viscose layer 2, thin layer 3, printing ink layer and oil reservoir.
Further, the oil layer is gloss oil or matte oil.
The present invention is further explained below.
Example 1
This example is the preparation of biodegradable composite paper
The temperature of the working environment in this example was 25 ℃ and the humidity was 65%.
The material of the film layer in this example was a glassine (natural cellulose) paper with a PVDC coating on one side (thickness: 0.022 mm; corona: 38dyne/cm on the front and back sides; package size: 880mm 4000 m).
The natural cellulose surface of the glassine is used as a glue coating surface, and a solvent-free polyurethane composite adhesive (a resin system: MDI-polyalcohol polymerization system; solid content: 100%; viscosity: 2000-4000 mpa.s (80 ℃) and density: 1.10 +/-0.10 g/m) is coated by a scraper coating method through a full-automatic paper-plastic dry laminating machine (the temperature of a glue roller: 80 ℃, the temperature of an oven: 50 ℃, the temperature of a laminating wheel: 70 ℃, the pressure: 15 MPa; the machine speed: 45m/min)2) At a rate of 5g/m2The glue is evenly coated on the natural fiber layer of the glass paper to form a glue layer, and then the paper substrate (128 g/m) is coated by a full-automatic paper-plastic dry laminating machine in a coating film mode2Coated paper; package size: 890mm by 5000m) is fixed on the adhesive layer, the adhesive is cured and is placed in a constant temperature chamber at 50 ℃ for 6 hours to obtain a film layer, and the biodegradable composite paper is obtained.
Example 2
This example is the preparation of biodegradable composite paper
This example differs from example 1 in that a polylactic acid (PLA) film (thickness: 0.025 mm; corona: 38dyne/cm on the front side; package size: 880mm 3000m) was used as the film layer material.
Example 3
This example is the preparation of a wrapping paper
1. Preparing an ultraviolet curing ink layer:
preparing an ultraviolet curing 4-color ink layer: offset lithographic printing machine (4 color machine: 1 st block black/2 nd block blue/3 rd block red/4 th block yellow; machine speed: 15500 sheets/hour, water bucket pH value: 5.0, water tank temperature: 10 ℃) is adopted at 3g/m2The dosage of the ultraviolet curing printing ink is 163g/m2Printing on biodegradable composite paper (with size of 864mm × 508mm), and curing oil by UV LED deviceThe ink was instantaneously fixed on the surface of the cellophane PVDC coating layer of the biodegradable composite paper of example 1, to obtain a 4-color ink layer.
2. Preparing an ultraviolet light curing oil layer:
coating the UV-curable gloss oil at a concentration of 4g/m by a lithographic offset press2The oil amount is coated on the surface of the ultraviolet light curing 4-color ink, and the ink layer is formed through ultraviolet light instant curing of a UVLED device, so that the packaging paper is obtained.
Example 4
This example is the preparation of a wrapping paper
1. Preparing an ultraviolet curing ink layer:
preparing an ultraviolet curing yellow spot color ink layer: ultraviolet light is adopted to cure the special yellow ink, and the special yellow ink is printed by a lithographic offset press (4 color press: 4 th seat yellow; machine speed: 15500 sheets/hour, water bucket pH value: 5.0, water tank temperature: 10 ℃) at the temperature of 3g/m2The dosage of the ultraviolet curing printing ink is 163g/m2Example 1 biodegradable composite paper (substrate size: 864mm × 508mm) was printed, and ink was instantly fixed on the surface of the PVDC coating of the glassine paper of the biodegradable composite paper of example 1 by uv curing using a uv led device, to obtain a spot color ink layer.
2. Preparing an ultraviolet light curing oil layer:
coating the UV-curable gloss oil at a concentration of 4g/m by a lithographic offset press2The oil amount is coated on the surface of the ultraviolet light curing yellow special color ink layer, and the oil layer is formed by ultraviolet light instant curing of a UVLED device, so that the packaging paper is obtained.
Example 5
This example is the preparation of a wrapping paper
This example differs from example 4 in that step 1 uses the biodegradable composite paper of example 2.
Example 6
This example is the preparation of a wrapping paper
This example differs from example 5 in that step 1 uses the biodegradable composite paper of example 2.
Comparative example 1
The packaging paper is prepared by adopting a common offset printing ink printing process and the water-based dry film-coated adhesive in the comparative example.
The operating environment temperature of this comparative example was 26.3 ℃ and the humidity was 64%.
1. Preparation of a common 4-color offset printing ink layer: adopting a lithographic offset press (4 color machine: 1 st block printing black/2 nd block printing blue/3 rd block printing red/4 th block printing yellow; machine speed: 12500 sheets/hour; bucket pH value: 5.1; bucket water conductivity value: 2001; water tank temperature: 10.6 deg.C; powder spraying: surface 500F) at 3g/m2The amount of the ink is 128g/m2Printing on the surface of coated paper (with the size of a printing stock: 864mm multiplied by 508mm), and naturally drying and solidifying the ink after 48 hours to obtain an ink layer, thereby obtaining a printed sheet with a 4-color ink layer.
2. Preparing packaging paper by adopting an instant film coating and laminating process:
placing the printed sheet (upper machine size: 864mm × 508mm) obtained in the step (1) and a BOPP (biaxially-oriented Polypropylene) optical film (thickness: 0.012mm, film corona: front 38dyne/cm) in a full-automatic dry laminating machine, pouring water-based dry laminating adhesive (solid content: 45.0 + -2.0%, pH: 8.0 + -1.0, viscosity: 18.0-25.0 sec (4 cups coated at 25 ℃), main component: acrylate copolymer) into a glue tank, adjusting various parameters (pressure: 13MPa, drying tunnel temperature: 90 ℃, laminating wheel temperature: 85 ℃, machine speed: 30m/min) of the full-automatic dry laminating machine, then performing upper machine laminating operation at 14g/m2The BOPP optical film is coated with the corona surface layer, the printing ink layer of the printed sheet is fixed on the adhesive layer, and the printed sheet is dried and solidified at normal temperature for 24 hours to obtain the packaging paper.
Comparative example 2
The packaging paper is prepared by adopting a common offset printing ink printing process and the water-based dry film-coated adhesive in the comparative example.
The operating environment temperature of this comparative example was 26.3 ℃ and the humidity was 64%.
1. Preparing a common bright yellow spot color offset printing ink layer: the offset lithographic printing machine (4 color machine: 4 seats yellow printing; machine speed: 12500 sheets/hr; bucket pH 5.1; bucket water conductivity: 2001; water tank temperature: 10.6 deg.C; powder spraying: surface 500F) is adopted, at a rate of 3g/m2Amount of ink usedAt 128g/m2Printing on the surface of coated paper (with the size of a printing stock: 864mm multiplied by 508mm), and naturally drying and solidifying the ink after 48 hours to obtain an ink layer, thereby obtaining a printed sheet with a bright yellow special color ink layer.
2. Placing the printed sheet (upper machine size: 864mm × 508mm) obtained in the step (1) and a BOPP (biaxially-oriented Polypropylene) optical film (thickness: 0.012mm, film corona: front 38dyne/cm) in a full-automatic dry laminating machine, pouring water-based dry laminating adhesive (solid content: 45.0 + -2.0%, pH: 8.0 + -1.0, viscosity: 18.0-25.0 sec (4 cups coated at 25 ℃), main component: acrylate copolymer) into a glue tank, adjusting various parameters (pressure: 13MPa, drying tunnel temperature: 90 ℃, laminating wheel temperature: 85 ℃, machine speed: 30m/min) of the full-automatic dry laminating machine, then performing upper machine laminating operation at 14g/m2The BOPP optical film is coated with the corona surface layer, the printing ink layer of the printed sheet is fixed on the adhesive layer, and the printed sheet is dried and solidified at normal temperature for 24 hours to obtain the packaging paper.
Comparative example 3
The comparative example adopts the water-based dry-type laminated adhesive to prepare the packaging paper
The present comparative example differs from comparative example 1 in that: the BOPP finish film of comparative example 1 was replaced with cellophane (natural cellulose) coated on one side with PVDC. Pouring water-based dry laminating adhesive (solid content: 45.0 +/-2.0%, pH: 8.0 +/-1.0, viscosity: 18.0-25.0 sec (4 cups coated at 25 ℃), main component: acrylate copolymer) into a glue tank by adopting a full-automatic dry laminating machine, adjusting various parameters of the dry laminating machine (pressure: 13MPa, drying tunnel temperature: 90 ℃, laminating wheel temperature: 85 ℃, machine speed: 30m/min), and carrying out machine laminating operation at a speed of 14g/m2The sizing amount of the adhesive is that the natural cellulose surface layer of the glass paper is coated with the adhesive, and after the coating, the problems of wrinkling, gumming and the like of the glass paper are found.
Comparative example 4
In this embodiment, the water-based dry-type film-coated adhesive is used to prepare the packaging paper
The present comparative example differs from comparative example 1 in that: the BOPP finish film of comparative example 1 was replaced with a polylactic acid (PLA) film. Gluing a polylactic acid (PLA) film surface layer, and finding that wrinkling occurs after the glue is glued through a drying tunnel.
In the construction process, the wrinkling phenomenon of the poly-emulsion ester film is found, so that the composite processing cannot be carried out, the requirement on the quality of the composite film cannot be met, and the effect is not accepted.
The wrinkling problem of the cellophane and polylactic acid (PLA) films in comparative examples 3 and 4 is mainly due to:
1. the glassine paper is a film which is made by using renewable natural fibers such as cotton pulp, wood pulp and the like as raw materials and adopting an adhesive bonding method, and is easy to absorb moisture; the operation of machine lamination, the problems of wrinkling, glue formation and the like can occur after the water-based dry laminating adhesive is used for gluing;
2. polylactic acid (PLA) films made from starch raw materials, which are proposed from renewable plant resources (such as corn), have poor heat resistance; and (3) a machine laminating operation, wherein after the water-based dry laminating adhesive is used for gluing, the coated glue passes through a drying channel (temperature: 90 ℃), and the wrinkling problem is caused.
Test examples
The performance of the wrapping paper prepared in the examples 3-6 and the comparative examples 1-2 is detected:
1. embossing test: the embossing tests of examples 3 to 6 and comparative examples 1 to 2 were carried out by using an embosser (embossing rumble pattern: fabric, production machine speed: 10m/min, machine pressure: 20 kg/cm)2)。
The packaging paper prepared in the comparative example 2 is subjected to an embossing test, and the quality problems of separation layer whitening and the like are found, and the packaging paper is unqualified; the wrapping papers obtained in examples 3 to 6 were subjected to an embossing test, and the wrapping papers were free from the problem of whitening of the release layer and were acceptable.
2. Comparison of printing Performance:
rub test: 2 pounds per 50 beats (performance standard: ASTM D5264-11);
test of fading (lightfastness): 20 hours (implementation standard: ASTM D3424-11);
[ adhesion test: #810.3M adhesive tape;
& Turn over and glue the test: copy paper is added on the ink surface and the ink surface in contact, and the ink surface are placed in a high-low temperature (damp-heat) oven (the temperature is 49 ℃, the humidity is 80 percent), and the test time is 10 days.
The test results are shown in table 1. As can be seen from Table 1, the wrapping papers of examples 3 to 6 are excellent in various properties. The method of using the biodegradable composite paper of example 1 and example 2 to prepare the wrapping paper can improve the printing efficiency by 19% compared with the printing speed of comparative example 1 and comparative example 2.
TABLE 1
The above-mentioned embodiments are only used for illustrating the technical solutions of the present invention, and not for limiting the same; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (5)
1. The biodegradable composite paper is characterized by consisting of a paper base layer, an adhesive layer and a film layer which are sequentially arranged from bottom to top;
the paper base layer and the film layer are compounded through an adhesive layer to form biodegradable composite paper;
the film layer is made of biodegradable materials.
2. The biodegradable composite paper as set forth in claim 1, wherein the paper substrate is selected from the group consisting of coated paper, matte paper, self-adhesive paper, corrugated paper, laser paper, kraft paper, fluorescent paper, paper bag paper, aluminized paper, glassine paper, silver coated paper, matte silver paper, gold coated paper, aluminum foil paper, pearlescent paper, book paper and specialty paper.
3. The biodegradable composite paper as set forth in claim 1, wherein the glue used in the adhesive layer is water-based dry-type laminating glue or solvent-free polyurethane laminating glue.
4. A packaging paper, which is characterized by comprising the biodegradable composite paper, an ink layer and an oil layer, which are arranged in sequence from bottom to top, according to any one of claims 1 to 3;
the ink layer is solidified on the surface of the biodegradable composite paper, and the oil layer is solidified on the surface of the ink layer.
5. Wrapping paper as claimed in claim 4, wherein the oil layer is a gloss oil or a matte oil.
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| CN202120970682.4U CN216427846U (en) | 2021-05-08 | 2021-05-08 | Biodegradable composite paper and packaging paper |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115157730A (en) * | 2022-07-05 | 2022-10-11 | 南京洁源包装有限公司 | Processing method of deoxidizer desiccant packaging paper |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115157730A (en) * | 2022-07-05 | 2022-10-11 | 南京洁源包装有限公司 | Processing method of deoxidizer desiccant packaging paper |
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