CN113417169A - Biodegradable composite paper, preparation method thereof and packaging paper - Google Patents
Biodegradable composite paper, preparation method thereof and packaging paper Download PDFInfo
- Publication number
- CN113417169A CN113417169A CN202110501507.5A CN202110501507A CN113417169A CN 113417169 A CN113417169 A CN 113417169A CN 202110501507 A CN202110501507 A CN 202110501507A CN 113417169 A CN113417169 A CN 113417169A
- Authority
- CN
- China
- Prior art keywords
- paper
- layer
- biodegradable composite
- film
- glue
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000002131 composite material Substances 0.000 title claims abstract description 65
- 238000004806 packaging method and process Methods 0.000 title claims abstract description 46
- 238000002360 preparation method Methods 0.000 title claims abstract description 21
- 239000010410 layer Substances 0.000 claims abstract description 131
- 238000007639 printing Methods 0.000 claims abstract description 43
- 239000012790 adhesive layer Substances 0.000 claims abstract description 27
- 239000000463 material Substances 0.000 claims abstract description 20
- 239000000123 paper Substances 0.000 claims description 205
- 239000010408 film Substances 0.000 claims description 71
- 239000003292 glue Substances 0.000 claims description 38
- 238000010030 laminating Methods 0.000 claims description 35
- 238000000576 coating method Methods 0.000 claims description 27
- 238000001723 curing Methods 0.000 claims description 25
- 239000011248 coating agent Substances 0.000 claims description 23
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 22
- 238000000034 method Methods 0.000 claims description 14
- 239000000853 adhesive Substances 0.000 claims description 12
- 239000000758 substrate Substances 0.000 claims description 12
- 238000004026 adhesive bonding Methods 0.000 claims description 11
- 238000004519 manufacturing process Methods 0.000 claims description 11
- 229920000298 Cellophane Polymers 0.000 claims description 10
- 229920003023 plastic Polymers 0.000 claims description 8
- 239000004033 plastic Substances 0.000 claims description 8
- 239000011086 glassine Substances 0.000 claims description 7
- 239000010409 thin film Substances 0.000 claims description 7
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims description 6
- -1 polybutylene adipate Polymers 0.000 claims description 6
- 229920001610 polycaprolactone Polymers 0.000 claims description 6
- 239000004632 polycaprolactone Substances 0.000 claims description 6
- 230000008569 process Effects 0.000 claims description 6
- 229910052709 silver Inorganic materials 0.000 claims description 6
- 239000004332 silver Substances 0.000 claims description 6
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 claims description 5
- 239000010931 gold Substances 0.000 claims description 5
- 229910052737 gold Inorganic materials 0.000 claims description 5
- 229920002961 polybutylene succinate Polymers 0.000 claims description 5
- 239000004631 polybutylene succinate Substances 0.000 claims description 5
- 229920002635 polyurethane Polymers 0.000 claims description 5
- 239000004814 polyurethane Substances 0.000 claims description 5
- 229910052782 aluminium Inorganic materials 0.000 claims description 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 4
- 239000005014 poly(hydroxyalkanoate) Substances 0.000 claims description 4
- KKEYFWRCBNTPAC-UHFFFAOYSA-L terephthalate(2-) Chemical compound [O-]C(=O)C1=CC=C(C([O-])=O)C=C1 KKEYFWRCBNTPAC-UHFFFAOYSA-L 0.000 claims description 4
- 239000011888 foil Substances 0.000 claims description 3
- 239000002655 kraft paper Substances 0.000 claims description 3
- 229920000903 polyhydroxyalkanoate Polymers 0.000 claims description 2
- 229920006381 polylactic acid film Polymers 0.000 claims description 2
- 230000002087 whitening effect Effects 0.000 abstract description 7
- 239000002994 raw material Substances 0.000 abstract description 6
- 238000000926 separation method Methods 0.000 abstract description 4
- 238000006065 biodegradation reaction Methods 0.000 abstract 1
- 230000007613 environmental effect Effects 0.000 abstract 1
- 238000003912 environmental pollution Methods 0.000 abstract 1
- 230000002349 favourable effect Effects 0.000 abstract 1
- 230000000052 comparative effect Effects 0.000 description 31
- 238000004049 embossing Methods 0.000 description 13
- 238000001035 drying Methods 0.000 description 10
- 230000001070 adhesive effect Effects 0.000 description 9
- 229920002678 cellulose Polymers 0.000 description 9
- 239000001913 cellulose Substances 0.000 description 9
- 229920006378 biaxially oriented polypropylene Polymers 0.000 description 8
- 239000011127 biaxially oriented polypropylene Substances 0.000 description 8
- 239000004626 polylactic acid Substances 0.000 description 8
- 229920001328 Polyvinylidene chloride Polymers 0.000 description 7
- 239000012939 laminating adhesive Substances 0.000 description 7
- 239000005033 polyvinylidene chloride Substances 0.000 description 7
- 239000000843 powder Substances 0.000 description 7
- 238000010586 diagram Methods 0.000 description 6
- 239000007787 solid Substances 0.000 description 5
- 239000002966 varnish Substances 0.000 description 5
- 239000000835 fiber Substances 0.000 description 4
- 238000007645 offset printing Methods 0.000 description 4
- 239000012788 optical film Substances 0.000 description 4
- 238000012805 post-processing Methods 0.000 description 4
- 238000004513 sizing Methods 0.000 description 4
- 238000005507 spraying Methods 0.000 description 4
- 229920001577 copolymer Polymers 0.000 description 3
- 239000011521 glass Substances 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 239000002904 solvent Substances 0.000 description 3
- 239000002344 surface layer Substances 0.000 description 3
- 229920000742 Cotton Polymers 0.000 description 2
- 241000196324 Embryophyta Species 0.000 description 2
- 229920001131 Pulp (paper) Polymers 0.000 description 2
- 229920000297 Rayon Polymers 0.000 description 2
- 229920002472 Starch Polymers 0.000 description 2
- 241000209149 Zea Species 0.000 description 2
- 235000005824 Zea mays ssp. parviglumis Nutrition 0.000 description 2
- 235000002017 Zea mays subsp mays Nutrition 0.000 description 2
- 235000013405 beer Nutrition 0.000 description 2
- 230000033228 biological regulation Effects 0.000 description 2
- 230000015556 catabolic process Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 235000005822 corn Nutrition 0.000 description 2
- 238000006731 degradation reaction Methods 0.000 description 2
- 238000010096 film blowing Methods 0.000 description 2
- 238000006116 polymerization reaction Methods 0.000 description 2
- 238000005096 rolling process Methods 0.000 description 2
- 239000008107 starch Substances 0.000 description 2
- 235000019698 starch Nutrition 0.000 description 2
- 150000005846 sugar alcohols Polymers 0.000 description 2
- AXKZIDYFAMKWSA-UHFFFAOYSA-N 1,6-dioxacyclododecane-7,12-dione Chemical compound O=C1CCCCC(=O)OCCCCO1 AXKZIDYFAMKWSA-UHFFFAOYSA-N 0.000 description 1
- ZMKVBUOZONDYBW-UHFFFAOYSA-N 1,6-dioxecane-2,5-dione Chemical compound O=C1CCC(=O)OCCCCO1 ZMKVBUOZONDYBW-UHFFFAOYSA-N 0.000 description 1
- 239000002028 Biomass Substances 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 239000002390 adhesive tape Substances 0.000 description 1
- 150000001491 aromatic compounds Chemical class 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 239000012620 biological material Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000003490 calendering Methods 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 235000019504 cigarettes Nutrition 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 239000002537 cosmetic Substances 0.000 description 1
- 230000032798 delamination Effects 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004100 electronic packaging Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 238000005562 fading Methods 0.000 description 1
- 239000007888 film coating Substances 0.000 description 1
- 238000009501 film coating Methods 0.000 description 1
- 235000013305 food Nutrition 0.000 description 1
- 239000005003 food packaging material Substances 0.000 description 1
- PQTCMBYFWMFIGM-UHFFFAOYSA-N gold silver Chemical compound [Ag].[Au] PQTCMBYFWMFIGM-UHFFFAOYSA-N 0.000 description 1
- 239000000383 hazardous chemical Substances 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 239000003999 initiator Substances 0.000 description 1
- 230000003834 intracellular effect Effects 0.000 description 1
- 150000002576 ketones Chemical class 0.000 description 1
- 238000003475 lamination Methods 0.000 description 1
- 244000005700 microbiome Species 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000005445 natural material Substances 0.000 description 1
- 150000002902 organometallic compounds Chemical class 0.000 description 1
- 239000002798 polar solvent Substances 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 239000011527 polyurethane coating Substances 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 238000007151 ring opening polymerisation reaction Methods 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000010345 tape casting Methods 0.000 description 1
- CRHIAMBJMSSNNM-UHFFFAOYSA-N tetraphenylstannane Chemical compound C1=CC=CC=C1[Sn](C=1C=CC=CC=1)(C=1C=CC=CC=1)C1=CC=CC=C1 CRHIAMBJMSSNNM-UHFFFAOYSA-N 0.000 description 1
- 230000007306 turnover Effects 0.000 description 1
- PAPBSGBWRJIAAV-UHFFFAOYSA-N ε-Caprolactone Chemical compound O=C1CCCCCO1 PAPBSGBWRJIAAV-UHFFFAOYSA-N 0.000 description 1
Images
Classifications
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H27/00—Special paper not otherwise provided for, e.g. made by multi-step processes
- D21H27/30—Multi-ply
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H27/00—Special paper not otherwise provided for, e.g. made by multi-step processes
- D21H27/10—Packing paper
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H27/00—Special paper not otherwise provided for, e.g. made by multi-step processes
- D21H27/18—Paper- or board-based structures for surface covering
- D21H27/22—Structures being applied on the surface by special manufacturing processes, e.g. in presses
Landscapes
- Wrappers (AREA)
- Laminated Bodies (AREA)
Abstract
The invention relates to the technical field of packaging paper, in particular to biodegradable composite paper, a preparation method thereof and packaging paper. The invention 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 invention 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 invention relates to the technical field of packaging paper, in particular to biodegradable composite paper, a preparation method thereof 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).
Disclosure of Invention
In view of the above, the invention provides biodegradable composite paper, a preparation method thereof and packaging paper, wherein the biodegradable composite paper is degradable, and the packaging paper is not embossed or beer lines are not peeled and whitened after post-processing.
The specific technical scheme is as follows:
the invention 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 invention, 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 invention 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 invention, 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 invention, 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 adopted by the adhesive layer is water-based dry-type laminated adhesive or water-based dry-type laminated adhesive without glueSolvent polyurethane coating adhesive. 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 invention, 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 by ring-opening polymerization of epsilon-caprolactone under the condition that a metal organic compound (such as tetraphenyltin) is used as a catalyst and dihydroxy or trihydroxy is used as an initiator, and can be processed into various film products by a film blowing 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)
The invention also provides a preparation method of the biodegradable composite paper, which 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 invention, 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 invention, 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 invention, the glue coating amount of the glue is 5g/m2。
In the invention, 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 invention 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 invention also provides application of the biodegradable composite paper in preparing packaging paper.
In the invention, 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 invention 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.
Specifically, the ink layer is cured on the surface of the film layer of the biodegradable composite paper, and the oil layer is cured on the surface of the ink layer. That is, the wrapping paper includes from supreme paper basic unit, viscose layer, thin layer, printing ink layer and the oil reservoir of setting gradually down.
In the invention, the oil layer is gloss oil or matte oil.
The invention 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.
In step 1 of the invention, the ink layer is printed on the surface of the biodegradable composite paper film layer.
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 invention 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 invention 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 invention 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 invention 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 invention is used for preparing the packaging paper, and the yield of the packaging paper can be improved to 99%.
The invention preferably adopts a lithographic offset press to print the ultraviolet curing ink, and the ink amount is 3g/m2。
The invention 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 invention has the following advantages:
the invention 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 invention 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 diagram of a biodegradable composite paper made of a single-sided PVDC coated cellophane (natural cellulose) according to example 1 of the present invention;
FIG. 2 is a diagram of a biodegradable composite paper made of polylactic acid (PLA) film according to example 2 of the present invention;
FIG. 3 is a diagram of a printed 4-color varnish wrapping paper made in example 3 of the present invention;
FIG. 4 is a diagram of a printed spot color varnish wrapping paper made in example 4 of the present invention;
FIG. 5 is a pictorial representation of a printed 4-color varnish wrapper made in accordance with example 5 of the present invention;
FIG. 6 is a pictorial representation of a printed spot color varnish wrapper made in accordance with example 6 of the present invention;
FIG. 7 is a pictorial view of a 4-color coated paper of the present invention prepared in comparative example 1;
FIG. 8 is a drawing of a printed spot color laminated packaging paper according to comparative example 2 of the present invention;
FIG. 9 is a test chart of a wrapping paper produced by comparative example 3 of the present invention;
FIG. 10 is a test chart of a wrapping paper produced by comparative example 4 of the present invention;
FIG. 11 is a pictorial view of a wrapping paper made in accordance with example 3 of the present invention undergoing an embossing test;
FIG. 12 is a pictorial view of a wrapper made in accordance with example 4 of the present invention subjected to an embossing test;
FIG. 13 is a pictorial view of a wrapper made in accordance with example 5 of the present invention subjected to an embossing test;
FIG. 14 is a pictorial view of a wrapper made in accordance with example 6 of the present invention undergoing an embossing test;
FIG. 15 is a pictorial view of a wrapper made in accordance with comparative example 1 of the present invention subjected to an embossing test;
FIG. 16 is a pictorial view of a wrapper made in accordance with comparative example 2 of the present invention subjected to an embossing test;
FIG. 17 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.
Referring to fig. 17, a schematic structural diagram of a composite paper according to an embodiment of the present invention is shown.
The embodiment of the invention 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 invention, 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 invention 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.
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 invention 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.
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).
Using cellophaneThe natural cellulose surface 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 (glue roller temperature: 80 ℃; oven temperature: 50 ℃; laminating wheel temperature: 70 ℃; pressure: 15 MPa; 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, as shown in figure 1.
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. The biodegradable composite paper prepared in this example is shown in fig. 2.
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/m2The surface of biodegradable composite paper (size of a printing stock: 864mm × 508mm) is printed, and ink is instantly fixed on the surface of the glass paper PVDC coating of the biodegradable composite paper in example 1 by ultraviolet light curing of a UVLED device, so as to obtain a 4-color ink layer.
2. Preparing an ultraviolet light curing oil layer:
the UV-curable varnish is combined with a lithographic offset pressWire coating at 4g/m2The oil amount of (a) was coated on the surface of the ultraviolet curing 4-color ink, and instantly cured by ultraviolet light of a UVLED apparatus to form an oil layer, to obtain a wrapping paper, as shown in fig. 3.
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, as shown in figure 4.
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.
The wrapping paper produced in this example is shown in FIG. 5.
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.
The wrapping paper produced in this example is shown in FIG. 6.
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, wherein the amount of the sizing is shown in figure 7.
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/m2The amount of the ink is 128g/m2Coated paper (printing stock size: 864mm X508 mm)And (4) printing the surface, and naturally drying and solidifying the printing ink after 48 hours to obtain an ink layer, thereby obtaining the printed sheet with the 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, wherein the amount of the sizing is shown in figure 8.
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 on-machine laminating operation at a speed of 14g/m2The sizing amount of (2) was applied to the natural cellulose surface layer of the glassine paper, and after the application of the sizing agent, problems of wrinkling, gumming and the like were found in the glassine paper, as shown in fig. 9.
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. When the coating was applied to a polylactic acid (PLA) film top layer, wrinkling was observed after the coating passed through the drying tunnel, as shown in fig. 10.
As shown in FIG. 10, during the construction process, the wrinkling phenomenon of the poly-lacto-ester film is found, so that the composite processing cannot be carried out, the quality requirement of the composite film cannot be met, and the effect is not acceptable.
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 embossing results are shown in fig. 11 to 16.
As shown in fig. 11 to 16, drawings of embossed test objects of the wrappers of examples 3 to 6 and comparative examples 1 to 2 were provided. As can be seen from FIG. 16, the wrapping paper prepared in comparative example 2 has quality problems such as peeling and whitening, and is unqualified when subjected to an embossing test; 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 (10)
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 material;
the biodegradable material is selected from polylactic acid film, cellophane, polyhydroxyalkanoate film, polycaprolactone film, polybutylene adipate/terephthalate film or polybutylene succinate film.
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 method for preparing biodegradable composite paper according to any one of claims 1 to 3, characterized in that it 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.
5. The preparation method according to claim 4, wherein the glue is coated on the surface of the film layer, and the coating method comprises the following specific 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.
6. The preparation method of claim 5, wherein the fixing of the paper substrate on the surface of the adhesive layer is specifically as follows:
and 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.
7. The process according to claim 5, wherein said glue has a glue application rate of 3.5g/m2~5.5g/m2。
8. Use of a biodegradable composite paper according to any one of claims 1 to 3 for the manufacture of a wrapping paper.
9. 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.
10. A method of making a wrapper according to claim 9, comprising the steps of:
step 1: printing ink on the surface of the biodegradable composite paper according to any one of claims 1 to 3, 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.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202110501507.5A CN113417169A (en) | 2021-05-08 | 2021-05-08 | Biodegradable composite paper, preparation method thereof and packaging paper |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202110501507.5A CN113417169A (en) | 2021-05-08 | 2021-05-08 | Biodegradable composite paper, preparation method thereof and packaging paper |
Publications (1)
Publication Number | Publication Date |
---|---|
CN113417169A true CN113417169A (en) | 2021-09-21 |
Family
ID=77712096
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN202110501507.5A Pending CN113417169A (en) | 2021-05-08 | 2021-05-08 | Biodegradable composite paper, preparation method thereof and packaging paper |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN113417169A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN114228293A (en) * | 2021-12-20 | 2022-03-25 | 河北上东包装科技有限公司 | Degradable flexible packaging paper-plastic composite bag and production process thereof |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN201694523U (en) * | 2010-04-30 | 2011-01-05 | 金誉(河南)包装有限公司 | Environment-friendly compound packaging material and packaging bag or box |
CN104210262A (en) * | 2014-08-26 | 2014-12-17 | 上海烟草集团有限责任公司 | Surface finishing technology of paper packing box |
CN105966014A (en) * | 2016-05-03 | 2016-09-28 | 东莞市酬勤包装制品有限公司 | Fully biodegradable composite material |
US20160288466A1 (en) * | 2015-04-02 | 2016-10-06 | Shantu Patel | Biopaper for Bags and Wrapping Paper |
KR102083124B1 (en) * | 2019-07-17 | 2020-02-28 | 동원시스템즈 주식회사 | Laminated film to be applied to eco-friendly high barrier packaging |
CN211710265U (en) * | 2019-11-25 | 2020-10-20 | 东莞全球环保科技有限公司 | Degradable film compounded by compostable degradable material and paper |
-
2021
- 2021-05-08 CN CN202110501507.5A patent/CN113417169A/en active Pending
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN201694523U (en) * | 2010-04-30 | 2011-01-05 | 金誉(河南)包装有限公司 | Environment-friendly compound packaging material and packaging bag or box |
CN104210262A (en) * | 2014-08-26 | 2014-12-17 | 上海烟草集团有限责任公司 | Surface finishing technology of paper packing box |
US20160288466A1 (en) * | 2015-04-02 | 2016-10-06 | Shantu Patel | Biopaper for Bags and Wrapping Paper |
CN105966014A (en) * | 2016-05-03 | 2016-09-28 | 东莞市酬勤包装制品有限公司 | Fully biodegradable composite material |
KR102083124B1 (en) * | 2019-07-17 | 2020-02-28 | 동원시스템즈 주식회사 | Laminated film to be applied to eco-friendly high barrier packaging |
CN211710265U (en) * | 2019-11-25 | 2020-10-20 | 东莞全球环保科技有限公司 | Degradable film compounded by compostable degradable material and paper |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN114228293A (en) * | 2021-12-20 | 2022-03-25 | 河北上东包装科技有限公司 | Degradable flexible packaging paper-plastic composite bag and production process thereof |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN104960353B (en) | A kind of pearly-lustre laser paper and its preparation technology | |
CN101671510B (en) | High-gloss direct plating method binding layer coating as well as preparation method and application thereof | |
CN102658742B (en) | Transfer print type decorative film suitable for cold wave technology | |
CN106087590A (en) | The wrapping paper of a kind of band halo of many colours effect and production technology thereof | |
CN101760107A (en) | Laser aluminized transfer coating suitable for use in gravure and preparation method thereof | |
CN102241923A (en) | Shifted Al-plating paint for offset printing, preparation method and application thereof | |
CN100588773C (en) | Transparent color fluorescence anti-forge band and production method thereof | |
CN216427846U (en) | Biodegradable composite paper and packaging paper | |
CN110792000A (en) | Corrugated paper printing process for fruit packaging box | |
CN113417169A (en) | Biodegradable composite paper, preparation method thereof and packaging paper | |
EP2163381A2 (en) | Holographic film | |
CN114312099B (en) | Manufacturing process of environment-friendly hidden anti-counterfeiting packaging material | |
CN116376151A (en) | Functionalized EVA material and application thereof | |
CN104631215A (en) | Method for manufacturing medium spray transfer paper | |
CN101914867A (en) | Production process of locally shifted aluminum plating paper | |
CN102816490A (en) | Holographic transfer single coating material and its preparation method | |
CN212073506U (en) | Deep-grain relief nanometer narrow molecular weight transfer material | |
CN107905033A (en) | One kind turns aluminium laser anti-counterfeiting paper and preparation method thereof | |
CN1131149C (en) | Technology for transferring antiforge laser marker onto plastic package | |
CN111926619A (en) | Compound silver card paper of grey end plain surface radium-shine | |
CN216761313U (en) | Gold stamping film | |
CN102555134B (en) | Production process of BOPP (Biaxially Oriented Polypropylene) matt laser film for aluminum-foil-imitating aluminum-plated paper | |
CN111942049A (en) | Printing method of adhesive label | |
CN111319388A (en) | Deep-grain relief nanometer narrow molecular weight transfer material and preparation method thereof | |
CN204455718U (en) | Spray medium transfer paper |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PB01 | Publication | ||
PB01 | Publication | ||
SE01 | Entry into force of request for substantive examination | ||
SE01 | Entry into force of request for substantive examination | ||
RJ01 | Rejection of invention patent application after publication | ||
RJ01 | Rejection of invention patent application after publication |
Application publication date: 20210921 |