EP3951049B1 - Panneau de doublure kraft écologique haute performance et son procédé de préparation - Google Patents
Panneau de doublure kraft écologique haute performance et son procédé de préparation Download PDFInfo
- Publication number
- EP3951049B1 EP3951049B1 EP21166623.5A EP21166623A EP3951049B1 EP 3951049 B1 EP3951049 B1 EP 3951049B1 EP 21166623 A EP21166623 A EP 21166623A EP 3951049 B1 EP3951049 B1 EP 3951049B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- pulp
- styrene
- water
- kraft liner
- liner board
- 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.)
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- 239000002655 kraft paper Substances 0.000 title claims description 46
- 238000002360 preparation method Methods 0.000 title claims description 22
- 239000000835 fiber Substances 0.000 claims description 134
- 239000003063 flame retardant Substances 0.000 claims description 79
- 239000010410 layer Substances 0.000 claims description 73
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 68
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 60
- 239000004816 latex Substances 0.000 claims description 53
- 229920000126 latex Polymers 0.000 claims description 53
- 229920001909 styrene-acrylic polymer Polymers 0.000 claims description 50
- 238000003756 stirring Methods 0.000 claims description 45
- 238000006243 chemical reaction Methods 0.000 claims description 40
- 239000002023 wood Substances 0.000 claims description 38
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 claims description 36
- 239000002131 composite material Substances 0.000 claims description 36
- 238000002156 mixing Methods 0.000 claims description 31
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 claims description 28
- AQNSVANSEBPSMK-UHFFFAOYSA-N dicyclopentenyl methacrylate Chemical compound C12CC=CC2C2CC(OC(=O)C(=C)C)C1C2.C12C=CCC2C2CC(OC(=O)C(=C)C)C1C2 AQNSVANSEBPSMK-UHFFFAOYSA-N 0.000 claims description 25
- UIIMBOGNXHQVGW-UHFFFAOYSA-M Sodium bicarbonate Chemical compound [Na+].OC([O-])=O UIIMBOGNXHQVGW-UHFFFAOYSA-M 0.000 claims description 24
- 238000010438 heat treatment Methods 0.000 claims description 21
- QIGBRXMKCJKVMJ-UHFFFAOYSA-N Hydroquinone Chemical compound OC1=CC=C(O)C=C1 QIGBRXMKCJKVMJ-UHFFFAOYSA-N 0.000 claims description 20
- 238000000576 coating method Methods 0.000 claims description 19
- 238000000034 method Methods 0.000 claims description 19
- 238000012216 screening Methods 0.000 claims description 19
- 239000000843 powder Substances 0.000 claims description 18
- CDBYLPFSWZWCQE-UHFFFAOYSA-L sodium carbonate Substances [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims description 18
- 239000011248 coating agent Substances 0.000 claims description 15
- 239000011247 coating layer Substances 0.000 claims description 15
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 claims description 14
- NIXOWILDQLNWCW-UHFFFAOYSA-N 2-Propenoic acid Natural products OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims description 14
- OMIGHNLMNHATMP-UHFFFAOYSA-N 2-hydroxyethyl prop-2-enoate Chemical compound OCCOC(=O)C=C OMIGHNLMNHATMP-UHFFFAOYSA-N 0.000 claims description 14
- 239000003513 alkali Substances 0.000 claims description 14
- CQEYYJKEWSMYFG-UHFFFAOYSA-N butyl acrylate Chemical compound CCCCOC(=O)C=C CQEYYJKEWSMYFG-UHFFFAOYSA-N 0.000 claims description 14
- 238000004513 sizing Methods 0.000 claims description 14
- YFHICDDUDORKJB-UHFFFAOYSA-N trimethylene carbonate Chemical compound O=C1OCCCO1 YFHICDDUDORKJB-UHFFFAOYSA-N 0.000 claims description 14
- IGFHQQFPSIBGKE-UHFFFAOYSA-N Nonylphenol Natural products CCCCCCCCCC1=CC=C(O)C=C1 IGFHQQFPSIBGKE-UHFFFAOYSA-N 0.000 claims description 13
- DBMJMQXJHONAFJ-UHFFFAOYSA-M Sodium laurylsulphate Chemical compound [Na+].CCCCCCCCCCCCOS([O-])(=O)=O DBMJMQXJHONAFJ-UHFFFAOYSA-M 0.000 claims description 13
- 238000007865 diluting Methods 0.000 claims description 13
- 239000000203 mixture Substances 0.000 claims description 13
- SNQQPOLDUKLAAF-UHFFFAOYSA-N nonylphenol Chemical compound CCCCCCCCCC1=CC=CC=C1O SNQQPOLDUKLAAF-UHFFFAOYSA-N 0.000 claims description 13
- 229940051841 polyoxyethylene ether Drugs 0.000 claims description 13
- 229920000056 polyoxyethylene ether Polymers 0.000 claims description 13
- 206010042674 Swelling Diseases 0.000 claims description 12
- 229910000030 sodium bicarbonate Inorganic materials 0.000 claims description 12
- 235000017557 sodium bicarbonate Nutrition 0.000 claims description 12
- 230000008961 swelling Effects 0.000 claims description 12
- 238000001914 filtration Methods 0.000 claims description 11
- 238000007761 roller coating Methods 0.000 claims description 11
- HECLRDQVFMWTQS-RGOKHQFPSA-N 1755-01-7 Chemical compound C1[C@H]2[C@@H]3CC=C[C@@H]3[C@@H]1C=C2 HECLRDQVFMWTQS-RGOKHQFPSA-N 0.000 claims description 10
- 238000001816 cooling Methods 0.000 claims description 10
- 238000001035 drying Methods 0.000 claims description 10
- 238000010030 laminating Methods 0.000 claims description 10
- 238000003825 pressing Methods 0.000 claims description 10
- 238000007670 refining Methods 0.000 claims description 10
- ITMCEJHCFYSIIV-UHFFFAOYSA-N triflic acid Chemical compound OS(=O)(=O)C(F)(F)F ITMCEJHCFYSIIV-UHFFFAOYSA-N 0.000 claims description 10
- BIKXLKXABVUSMH-UHFFFAOYSA-N trizinc;diborate Chemical compound [Zn+2].[Zn+2].[Zn+2].[O-]B([O-])[O-].[O-]B([O-])[O-] BIKXLKXABVUSMH-UHFFFAOYSA-N 0.000 claims description 10
- CERQOIWHTDAKMF-UHFFFAOYSA-N Methacrylic acid Chemical compound CC(=C)C(O)=O CERQOIWHTDAKMF-UHFFFAOYSA-N 0.000 claims description 9
- 230000014759 maintenance of location Effects 0.000 claims description 9
- 229910000029 sodium carbonate Inorganic materials 0.000 claims description 9
- 239000003999 initiator Substances 0.000 claims description 8
- 238000012545 processing Methods 0.000 claims description 8
- 238000004537 pulping Methods 0.000 claims description 8
- 230000009172 bursting Effects 0.000 claims description 7
- WNROFYMDJYEPJX-UHFFFAOYSA-K aluminium hydroxide Chemical compound [OH-].[OH-].[OH-].[Al+3] WNROFYMDJYEPJX-UHFFFAOYSA-K 0.000 claims description 6
- 239000003795 chemical substances by application Substances 0.000 claims description 6
- 230000007935 neutral effect Effects 0.000 claims description 6
- 239000004114 Ammonium polyphosphate Substances 0.000 claims description 5
- 239000006087 Silane Coupling Agent Substances 0.000 claims description 5
- 238000010521 absorption reaction Methods 0.000 claims description 5
- 235000019826 ammonium polyphosphate Nutrition 0.000 claims description 5
- 229920001276 ammonium polyphosphate Polymers 0.000 claims description 5
- 238000013459 approach Methods 0.000 claims description 5
- 238000003490 calendering Methods 0.000 claims description 5
- 239000002562 thickening agent Substances 0.000 claims description 5
- 238000005406 washing Methods 0.000 claims description 5
- 229920000877 Melamine resin Polymers 0.000 claims description 4
- 229920000388 Polyphosphate Polymers 0.000 claims description 4
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 4
- JDSHMPZPIAZGSV-UHFFFAOYSA-N melamine Chemical compound NC1=NC(N)=NC(N)=N1 JDSHMPZPIAZGSV-UHFFFAOYSA-N 0.000 claims description 4
- 229910052760 oxygen Inorganic materials 0.000 claims description 4
- 239000001301 oxygen Substances 0.000 claims description 4
- 239000001205 polyphosphate Substances 0.000 claims description 4
- 235000011176 polyphosphates Nutrition 0.000 claims description 4
- ILRRQNADMUWWFW-UHFFFAOYSA-K aluminium phosphate Chemical compound O1[Al]2OP1(=O)O2 ILRRQNADMUWWFW-UHFFFAOYSA-K 0.000 claims description 3
- -1 polyphosphoester Polymers 0.000 claims description 3
- 238000002715 modification method Methods 0.000 claims description 2
- UIIMBOGNXHQVGW-DEQYMQKBSA-M Sodium bicarbonate-14C Chemical compound [Na+].O[14C]([O-])=O UIIMBOGNXHQVGW-DEQYMQKBSA-M 0.000 claims 1
- 229910021502 aluminium hydroxide Inorganic materials 0.000 claims 1
- 239000000123 paper Substances 0.000 description 20
- ROOXNKNUYICQNP-UHFFFAOYSA-N ammonium persulfate Chemical compound [NH4+].[NH4+].[O-]S(=O)(=O)OOS([O-])(=O)=O ROOXNKNUYICQNP-UHFFFAOYSA-N 0.000 description 14
- 238000005516 engineering process Methods 0.000 description 9
- 238000010009 beating Methods 0.000 description 8
- 125000002091 cationic group Chemical group 0.000 description 8
- 230000000694 effects Effects 0.000 description 8
- 229920002401 polyacrylamide Polymers 0.000 description 8
- RMAQACBXLXPBSY-UHFFFAOYSA-N silicic acid Chemical compound O[Si](O)(O)O RMAQACBXLXPBSY-UHFFFAOYSA-N 0.000 description 8
- 229910001870 ammonium persulfate Inorganic materials 0.000 description 7
- 238000004519 manufacturing process Methods 0.000 description 7
- 239000003607 modifier Substances 0.000 description 7
- 239000002994 raw material Substances 0.000 description 6
- 239000002245 particle Substances 0.000 description 5
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 description 4
- 235000011114 ammonium hydroxide Nutrition 0.000 description 4
- 239000011230 binding agent Substances 0.000 description 4
- 230000006835 compression Effects 0.000 description 4
- 238000007906 compression Methods 0.000 description 4
- 239000010893 paper waste Substances 0.000 description 4
- NLXLAEXVIDQMFP-UHFFFAOYSA-N Ammonium chloride Substances [NH4+].[Cl-] NLXLAEXVIDQMFP-UHFFFAOYSA-N 0.000 description 3
- QGZKDVFQNNGYKY-UHFFFAOYSA-N ammonia Natural products N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 3
- 238000011161 development Methods 0.000 description 3
- 238000007639 printing Methods 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 239000000178 monomer Substances 0.000 description 2
- 239000012744 reinforcing agent Substances 0.000 description 2
- 239000002352 surface water Substances 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- LCPVQAHEFVXVKT-UHFFFAOYSA-N 2-(2,4-difluorophenoxy)pyridin-3-amine Chemical compound NC1=CC=CN=C1OC1=CC=C(F)C=C1F LCPVQAHEFVXVKT-UHFFFAOYSA-N 0.000 description 1
- 206010067482 No adverse event Diseases 0.000 description 1
- 239000012752 auxiliary agent Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 239000011436 cob Substances 0.000 description 1
- 239000010791 domestic waste Substances 0.000 description 1
- 238000010556 emulsion polymerization method Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 238000009499 grossing Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- JRKICGRDRMAZLK-UHFFFAOYSA-L persulfate group Chemical group S(=O)(=O)([O-])OOS(=O)(=O)[O-] JRKICGRDRMAZLK-UHFFFAOYSA-L 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- USHAGKDGDHPEEY-UHFFFAOYSA-L potassium persulfate Chemical compound [K+].[K+].[O-]S(=O)(=O)OOS([O-])(=O)=O USHAGKDGDHPEEY-UHFFFAOYSA-L 0.000 description 1
- CHQMHPLRPQMAMX-UHFFFAOYSA-L sodium persulfate Substances [Na+].[Na+].[O-]S(=O)(=O)OOS([O-])(=O)=O CHQMHPLRPQMAMX-UHFFFAOYSA-L 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 230000002195 synergetic effect Effects 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
- D21H11/00—Pulp or paper, comprising cellulose or lignocellulose fibres of natural origin only
- D21H11/14—Secondary fibres
-
- 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
- D21B—FIBROUS RAW MATERIALS OR THEIR MECHANICAL TREATMENT
- D21B1/00—Fibrous raw materials or their mechanical treatment
- D21B1/04—Fibrous raw materials or their mechanical treatment by dividing raw materials into small particles, e.g. fibres
- D21B1/12—Fibrous raw materials or their mechanical treatment by dividing raw materials into small particles, e.g. fibres by wet methods, by the use of steam
- D21B1/30—Defibrating by other means
- D21B1/34—Kneading or mixing; Pulpers
- D21B1/345—Pulpers
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21D—TREATMENT OF THE MATERIALS BEFORE PASSING TO THE PAPER-MAKING MACHINE
- D21D1/00—Methods of beating or refining; Beaters of the Hollander type
- D21D1/20—Methods of refining
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21D—TREATMENT OF THE MATERIALS BEFORE PASSING TO THE PAPER-MAKING MACHINE
- D21D5/00—Purification of the pulp suspension by mechanical means; Apparatus therefor
- D21D5/02—Straining or screening the pulp
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
- D21F11/00—Processes for making continuous lengths of paper, or of cardboard, or of wet web for fibre board production, on paper-making machines
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H19/00—Coated paper; Coating material
- D21H19/36—Coatings with pigments
- D21H19/44—Coatings with pigments characterised by the other ingredients, e.g. the binder or dispersing agent
- D21H19/56—Macromolecular organic compounds or oligomers thereof obtained by reactions only involving carbon-to-carbon unsaturated bonds
- D21H19/58—Polymers or oligomers of diolefins, aromatic vinyl monomers or unsaturated acids or derivatives thereof
-
- 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
- D21H21/00—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties
- D21H21/06—Paper forming aids
- D21H21/10—Retention agents or drainage improvers
-
- 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
- D21H21/00—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties
- D21H21/14—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties characterised by function or properties in or on the paper
- D21H21/34—Ignifugeants
-
- 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
- D21H23/00—Processes or apparatus for adding material to the pulp or to the paper
- D21H23/02—Processes or apparatus for adding material to the pulp or to the paper characterised by the manner in which substances are added
- D21H23/22—Addition to the formed paper
- D21H23/52—Addition to the formed paper by contacting paper with a device carrying the material
- D21H23/56—Rolls
-
- 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
Definitions
- the present invention relates to the manufacturing and processing technical field of carton boards, in particular to a high-performance environment-friendly kraft liner board, and a preparation method thereof.
- Carton boards are the most important raw materials for wrapping cartons. With the improvement of people's living standards and social progress, many high-grade cartons for commodity wrapping need to consume a large number of high-performance carton boards. With the continuous development of China's paper industry, the shortage of fiber raw materials has become a bottleneck issue that restricts sustainable development of the paper industry. Thus, waste paper which is widely applied in carton boards manufacturing enterprises also limits the improvement of product performance.
- kraft liner boards for various wrapping cartons are generally made of waste paper, and without utilizing flame retardant treatment in most cases.
- some high-grade wrapping cartons or special products such as export products, a small number of high-grade consumer products, flammable and explosive products, military products, require flame retardant wrapping and transportation in particular.
- electric commercial cartons whether they are ordinary cartons or cartons for wrapping color TVs, refrigerators and other high-grade electrical appliances, the kraft liner boards used among them are generally without flame retardant treatment, it is a hidden danger, fires happen occasionally during transportation or storage of wrapping cartons.
- With the development of society and the improvement of people's living requirements it is an inevitable requirement to treat kraft liner boards with flame retardants for wrapping cartons.
- some wrapping carton products adopt the method of adding plenty of flame retardants in the pulp to get the flame retardant performance, but the added amount is large, the effect is limited, the cost is high, and the physical strength of the products is affected.
- one of the prior arts i.e., Chinese Patent Number: CN108505372B discloses a kind of method for producing low gram weight and high strength degree craft paper using domestic waste paper.
- another prior art i.e., Chinese Patent Number: CN109853282A discloses a kind of fire-retardant kraft liner board prepared using fire-retardant secondary stock.
- said prior arts fail to disclose production of a paper/kraft liner board with a flame retardant layer that is effective in terms of flame retardant properties and cost, and also that does not impact the strength of the paper/ kraft liner board while adding the flame retardant properties.
- kraft liner boards are used to wrap higher-grade products, so they have higher requirements on their quality performance, especially in the process of box making, such as stretching and folding, which requires good folding endurance, tensile strength, and ring crush compression strength. After being made into cartons, good bursting strength and water resistance are required during wrapping and transportation. In order to improve the wrapping effect, the surface requiresaji printing, so kraft liner boards also require good surface smoothing performance.
- the prior art mainly adopts surface sizing method to improve the ring crush compression strength and surface water resistance of products, which has many defects: surface sizing can mainly improve the surface strength and partial ring crush compression resistance of the products, but have limited effect on improving the overall physical strength of the products, such as tensile strength, bursting strength and folding endurance, so the physical properties of the kraft liner boards mainly produced by waste paper are restricted. Therefore, a large number of reinforcing agents require to be added in the production process to solve the problems, and the loss is large and the cost is high. Moreover, the usage of surface sizing has a certain effect on improving the surface water resistance and lowering the Cobb value of the product, but it has limited effect on improving the overall water resistance of the kraft liner boards. Furthermore, the usage of surface sizing can improve the surface smoothness of the products to a certain extent, but it is difficult to achieve the effect of high-quality wrapping and printing products.
- objects of the present invention are to provide a high-performance environment-friendly kraft liner board, and a preparation method thereof.
- the invention is set out in the appended set of claims.
- the present invention adopts technical solutions as follows.
- a high-performance environment-friendly kraft liner board comprising a bottom layer, a top layer and a coating layer, which are arranged successively in an order from bottom to top; wherein: the bottom layer is made of a bottom layer pulp composed of a modified wood powdery pulp and a short fiber pulp; the top layer is made of a top layer pulp composed of a long fiber pulp and a short fiber pulp; the coating layer is formed through coating a flame retardant styrene-acrylic latex on the top layer; the long fiber pulp and the short fiber pulp are formed through pulping old domestic corrugated boxes; the flame retardant styrene-acrylic latex consists of modified composite flame retardants, a functional modified styrene-acrylic latex and water.
- a basis weight of the high-performance environment-friendly kraft liner board is 100-120 g/m 2
- a ring pressure index is 6.7-7.6 mN ⁇ m 2 /g
- a frontal water absorption is 30-31 g/m 2
- a limit oxygen index is 30-33%
- a smoothness is 15-16 seconds
- a bursting index is 2.4-2.6 kPa ⁇ m 2 /g
- a folding endurance is 15-20 times.
- a weight percentage concentration of the flame retardant styrene-acrylic latex is 2.0-5.0%.
- a weight ratio of the modified composite flame retardants to the functional modified styrene-acrylic latex is 1:2.5-3.0.
- the modified composite flame retardants are prepared through modifying composite flame retardants with a modifier; wherein: the modifier is a silane coupling agent; more preferably, the silane coupling agent is N-( ⁇ -aminoethyl)-r-aminopropyltrimethoxysilane.
- a weight ratio of the modifier to the composite flame retardants is (0.002-0.01):1.
- the composite flame retardants contain two or more flame retardant elements.
- the composite flame retardants may be a combination of any two or more of ammonium polyphosphate, polyphosphoester, melamine polyphosphate, zinc borate, aluminum phosphate, aluminum hydroxide, etc., and a ratio of each flame retardant element is not specifically limited.
- the composite flame retardants consist of two or more flame retardant elements of equal weight.
- the zinc borate are ultra-fine powders with a particle size of 0.02-0.04 um.
- the aluminum hydroxide are ultra-fine powders with a particle size of 0.03-0.05 um.
- the functional modified styrene-acrylic latex is prepared through steps of:
- a weight ratio of the dicyclopentenyl methacrylate, the water, the sodium dodecyl sulfate, the nonylphenol polyoxyethylene ether, the trimethylene carbonate, the acrylic acid, the hydroxyethyl acrylate, the butyl acrylate, the styrene, the sodium bicarbonate and the initiator is 1:40-50:0.2-0.3:0.3-0.4:1-1.3:0.2-0.5:4-6: 25-35:25-35:0.2-0.4:0.4-0.6.
- the initiator is a persulfate salt, and specifically can be any one of ammonium persulfate, sodium persulfate or potassium persulfate.
- a pH regulator adopts ammonia water.
- the dicyclopentenyl methacrylate is prepared through steps of:
- an agitator speed is 100-500 r/min.
- a weight ratio of the methacrylic acid, the trifluoromethanesulfonic acid, the hydroquinone, the dicyclopentadiene and the NaOH is 0.8-1.2:0.002-0.004:0.00006-0.0001:1.5-2.0:0.0015-0.002.
- a weight percentage concentration of the long fiber pulp is 3.5-4.5%
- a weight percentage concentration of the short fiber pulp is 4-5%
- a weight percentage concentration of the modified wood powdery pulp is 3-5%.
- a weight ratio of the modified wood powdery pulp to the short fiber pulp is 5-10:95-90.
- the modified wood powdery pulp is prepared through modifying wood powders with a swelling agent, and the swelling agent is a mixed alkali; a modification method is as follows: after processing the wood powders with a refiner, successively adding the mixed alkali and water, stirring evenly, then heating an obtained mixture to 70-90°C, and a swelling treatment is carried out at constant temperature for 60-90 minutes to form the modified wood powdery pulp.
- the water used for the swelling agent modifying wood powders adopts dryer condensed water in a double-stacked paper machine, which is used for preparing products of the present invention.
- a weight ratio of the long fiber pulp to the short fiber pulp is 80-90:20-10.
- a weight ratio of the top layer pulp to the bottom layer pulp is 40-50:60-50.
- a ratio of total weight of absolute dry fibers contained in the bottom layer pulp and the top layer pulp to a weight of the coating layer is 1:0.005-0.015.
- a second object of the present invention is to provide a preparation method for the above high-performance environment-friendly kraft liner board, comprising steps of:
- a first-stage pressure screen of the fine screening for first level three stages adopts a micro-slot width pressure screen to remove binders, and a screen slot width is 0.08-0.12 mm.
- a weight ratio of absolute dry long fibers in the long fiber coarse pulp obtained by screen sizing to absolute dry short fibers in the short fiber coarse pulp is 30-40:70-60.
- the long fiber pulp adopts conical refiners in series to refine the pulp, and adopts a long fiber viscous beating technology, and a beating degree is 28-30 °SR.
- a weight percentage concentration of the long fiber pulp is 3.5-4.5%, and a weight percentage concentration of the short fiber pulp is 4-5%.
- the water in the step (i) and step (ii) both adopts dryer condensed water in a double-stacked paper machine.
- the retention and drainage aids in the step (2) consist of two components: cationic polyacrylamide and silica sol, wherein: a weight ratio of absolute dry fibers, cationic polyacrylamide, and silica sol is 1:0.001-0.002:0.001-0.002; the absolute dry fibers refer to total amounts of absolute dry fibers contained in the bottom layer pulp and the top layer pulp.
- the coating in the step (2) adopts the metering roller coating technology, specifically, by a metering roller coating method, coating the flame retardant styrene-acrylic latex on the top layer of the kraft liner board obtained through double-folding, laminating, pressing and drying, so as to form a coating layer.
- FIG.1 is a preparation process flow chart of the high-performance environment-friendly kraft liner board according to the present invention.
- a high-performance environment-friendly kraft liner board comprising a bottom layer, a top layer and a coating layer, which are arranged successively in an order from bottom to top.
- the bottom layer is made of a bottom layer pulp composed of a modified wood powdery pulp and a short fiber pulp.
- the top layer is made of a top layer pulp composed of a long fiber pulp and a short fiber pulp.
- the coating layer is formed through coating a flame retardant styrene-acrylic latex on the top layer.
- the long fiber pulp and the short fiber pulp are formed through pulping old domestic corrugated boxes.
- the flame retardant styrene-acrylic latex consists of modified composite flame retardants, a functional modified styrene-acrylic latex and water.
- the composite flame retardants are a combination of any two or more of ammonium polyphosphate, polyphosphoester, melamine polyphosphate, zinc borate, and aluminum phosphate; a weight ratio of the modified composite flame retardants to the functional modified styrene-acrylic latex is 1:2.5-3.0.
- the modified composite flame retardants are prepared through modifying composite flame retardants with a silane coupling agent.
- the functional modified styrene-acrylic latex is prepared through steps of: adding according to a proportion, dicyclopentenyl methacrylate, water, sodium dodecyl sulfate and nonylphenol polyoxyethylene ether into a reactor 1 and stirring evenly. Then adding trimethylene carbonate, and after stirring evenly, successively adding acrylic acid, hydroxyethyl acrylate, butyl acrylate and styrene into reaction system, while stirring at a constant speed until they are mixed well. Further, the reaction system is heated to 70-90°C, and sodium bicarbonate and an initiator are added and stirred.
- a reaction is carried out at constant temperature for 2-4 hours, and upon completion of the reaction, the mixture is cooled to a room temperature. Thereafter, filtering is done and a pH value of an obtained product is adjusted to neutral, and obtaining the functional modified styrene-acrylic latex.
- the proportion includes a weight ratio of the dicyclopentenyl methacrylate, the water, the sodium dodecyl sulfate, the nonylphenol polyoxyethylene ether, the trimethylene carbonate, the acrylic acid, the hydroxyethyl acrylate, the butyl acrylate, the styrene, the sodium bicarbonate and the initiator is 1:40-50:0.2-0.3:0.3-0.4:1-1.3:0.2-0.5:4-6: 25-35:25-35:0.2-0.4:0.4-0.6.
- the preparation method of a high-performance environment -friendly kraft liner board comprising following steps of:
- the preparation method of a high-performance environment -friendly kraft liner board comprising following steps of:
- the main performance indexes of the high-performance environment-friendly kraft liner board prepared in the examples 1 to 3 are tested.
- the ring pressure index is tested according to an GB/T2679.8-2016 "Paperboard-Determination of ring crush compression strength”;
- the frontal water absorption is tested according to an GB/T1540-2002 "Paper and board-Determination of water absorption”;
- the flame retardancy is tested according to an oxygen index meter ASTM D2863 standard;
- smoothness is tested according to an GB/T456-2002 "Paper and board-Determination of smoothness” (Bekk method);
- bursting index is tested according to an GB/T1539-2007 "Paperboard-Determination of bursting strength”;
- Folding endurance is tested according to an GB/T2679.5-2002 "Paper and board-Determination of folding endurance ".
- Table 1 The main performance index test results of the high-performance environment-friendly kraft liner board prepared in Examples 1-3.
- Technical indexes Example 1
- Example 2 Example 3 a basis weight (g/m 2 ) 100 120 110 a ring pressure index (mN ⁇ m 2 /g) 6.7 7.6 7.2 a frontal water absorption (g/m 2 ) 30 31 30.6 flame retardancy 30 33 32.4 (a limit oxygen index %) a smoothness (seconds) 15 16 16 a bursting index (kPa ⁇ m 2 /g ) 2.4 2.6 2.55 a folding endurance (times) 15 20 20 20
Claims (7)
- Carton kraft doublé respectueux de environnement à haute-performance, comprenant une couche de fond, une couche de sommet et une couche de revêtement, qui sont disposées successivement dans un ordre de bas en haut; caractérisé en ce que ladite couche de fond est faite d'une pâte à papier de couche de fond composée d'une pâte modifiée à poudre de bois et d'une pâte à fibres courtes; ladite couche de sommet est faite d'une pâte à papier de couche de sommet composée d'une pâte à fibres courtes et d'une pâte à fibres longues; ladite couche de revêtement est formée par le moyen de revêtir un styrène-acrylique latex ignifuge sur ladite couche de sommet; la pâte à fibres courtes et la pâte à fibres longues sont formées par la mise en pâte de vieilles boîtes ondulées domestiques; le styrène-acrylique latex ignifuge se compose de retardateurs de flamme composés modifiés, un styrène-acrylique latex modifié fonctionnel et eau; les retardateurs de flamme composés sont une combinaison de deux ou plusieurs de un polyphosphate d'ammonium, un polyphosphoester, un polyphosphate de mélamine, un borate de zinc, un hydroxyde d'aluminium et un phosphate d'aluminium; les retardateurs de flamme composés modifiés sont préparés par le moyen de modifier les retardateurs de flamme composés avec un agent de couplage silane;un rapport de poids entre les retardateurs de flamme composés modifiés et le styrène-acrylique latex modifié fonctionnel est 1:2,5-3,0; les retardateurs de flamme composés modifiés sont préparés par le moyen de modifier les retardateurs de flamme composés avec un agent de couplage silane;le styrène-acrylique latex modifié fonctionnel est préparé par étapes de:
selon une proportion, ajouter du méthacrylate de dicyclopentényle, de l'eau, du dodécylsulfate de sodium et de l'éther polyoxyéthylène de nonylphénol dans un réacteur 1, en remuant uniformément; ajouter du carbonate de triméthylène, après l'avoir remué uniformément, ajouter successivement de l'acide acrylique, de l'acrylate d'hydroxyéthyle, de l'acrylate de butyle et du styrène dans un système de réaction, en remuant à vitesse constante jusqu'à bien mélanger; ensuite, chauffer le système de réaction à 70-90°C, et ajouter du bicarbonate de sodium et un initiateur de façon à faire une réaction à température constante pendant 2 à 4 heures dans des conditions d'agitation, à la fin de la réaction, refroidir le système à température ambiante, faire filtrage, ajuster de la valeur du pH d'un produit obtenu à neutre, puis obtenir le styrène-acrylique latex modifié fonctionnel, dans lesquelles la proportion inclut un rapport de poids du méthacrylate de dicyclopentényle, l'eau, le dodécylsulfate de sodium, l'éther polyoxyéthylène de nonylphénol, le carbonate de triméthylène, l'acide acrylique, l'acrylate d'hydroxyéthyle, l'acrylate de butyle, le styrène, le bicarbonate de sodium et le initiateur est 1 :40-50 :0.2-0.3 :0.3-0.4 :1-1.3 :0.2-0.5 :4-6 : 25-35 :25-35 :0.2-0.4 :0.4-0.6. - Carton kraft doublé respectueux de environnement à haute-performance selon la revendication 1, caractérisé en ce que du carton kraft doublé respectueux de environnement à haute-performance, un grammage est 6.7-7.6 mN·m2/g, une absorption de l'eau frontale est 30-31 g/m2, un indice limite d'oxygène est 30-33%, une planitude est 15-16 secondes, un indice de pétardage est 2.4-2.6 kPa·m2/g, une endurance de pliage est 15-20 fois.
- Carton kraft doublé respectueux de environnement à haute-performance selon la revendication 1, caractérisé en ce que le méthacrylate de dicyclopentényle est préparé par étapes de :
selon une proportion, ajouter successivement de l'acide méthacrylique, de l'acide trifluorométhanesulfonique et de l'hydroquinone dans un réacteur 2, après les avoir remués et mélangés, les chauffer à 78-82 °C, ajouter du dicyclopentadiène au réacteur 2, en les ayant mélangés, puis chauffer le système de réaction à 85-90 °C de façon à faire une réaction à température constante pendant 3 à 4 heures, à la fin de la réaction, refroidir le système à température ambiante, ajouter de l'hydroxyde de sodium dans un produit obtenu, en les remuant pendant 1 à 2 heures, puis laver un mélange obtenu, filtrer et distiller le mélange, enfin obtenir le méthacrylate de dicyclopentényle, dans lesquelles la proportion inclut un rapport de poids de l'acide trifluorométhanesulfonique, l'hydroquinone, le dicyclopentadiène et le NaOH est 0.8-1.2:0.002-0.004:0.00006-0.0001: 1.5-2.0:0.0015-0.002. - Carton kraft doublé respectueux de environnement à haute-performance selon la revendication 1, caractérisé en ce que la proportion inclut un rapport de poids du méthacrylate de dicyclopentényle, l'eau, le dodécylsulfate de sodium, l'éther polyoxyéthylène de nonylphénol, le carbonate de triméthylène, l'acide acrylique, l'acrylate d'hydroxyéthyle, l'acrylate de butyle, le styrène, le bicarbonate de sodium et le initiateur est 1:40-50:0.2-0.3:0.3-0.4:1-1.3:0.2-0.5:4-6:25-35:25-35:0.2- 0.4:0.4-0.6.
- Carton kraft doublé respectueux de environnement à haute-performance selon la revendication 1, caractérisé en ce que la pâte modifiée à poudre de bois est préparée par le moyen de modifier les poudres de bois avec un agent gonflant, le agent gonflant est un alcali mixte; une méthode de modification est effectuée par étapes de : après avoir traité les poudres de bois avec un raffineur, ajouter successivement l'alcali mixte et l'eau, en les remuant uniformément, puis chauffer un mélange obtenu à 70-90°C de façon à faire un traitement de gonflement à température constante pendant 60 à 90 minutes, enfin former la pâte modifiée à poudre de bois, dans lesquelles l'alcali mixte se compose d'hydroxyde de sodium et carbonate de sodium.
- Méthode de préparation pour le carton kraft doublé respectueux de environnement à haute-performance selon la revendication 1, comprenant les étapes de:(1) dans une étape de mise en pâte(i) préparer une pâte à fibres courtes et une pâte à fibres longues,- casser vieilles boîtes ondulées domestiques à l'aide d'un hydrapulpeur, séparer des déchets à haute consistance, puis les cribler grossièrement pour premières trois étapes, en les criblant à une pâte grossière à fibres courtes et une pâte grossière à fibres longues, -séparer la pâte grossière à fibres longues pour premières trois étapes, et éliminer des déchets;- cribler finement des fibres obtenues pour premières trois étapes successivement, en les épaississant à l'aide d'un épaississeur multidisques, et les raffinant à l'aide d'un raffineur conique, enfin les diluant avec de l'eau pour obtenir la pâte à fibres longues, puis la mettre en réserv dans un calow;- cribler finement la pâte grossière à fibres courtes pour premières deux étapes successivement, en la raffinant à l'aide du raffineur conique, enfin la diluant avec de l'eau pour obtenir la pâte à fibres courtes, puis la mettre en réserv dans un calow;(ii) préparer une pâte modifiée à poudre de bois,- traiter des poudres de bois avec un raffineur, ajouter du alcali mixte et de la eau successivement, en les remuant uniformément, pius chauffer un mélange obtenu à 70-90°C de façon à faire un traitement de gonflement à température constante pendant 60 à 90 minutes, afin d'assouplir les fibres de manière appropriée et de former la pâte modifiée à poudre de bois avec une concentration en pourcentage de poids de 3 à 5%;(2) dans une étapes de fabrication du papier- selon une proportion, mélanger uniformément la pâte modifiée à poudre de bois et la pâte à fibres courtes obtenues par l'étape (1) pour former une pâte à papier de couche de fond,- mélanger uniformément la pâte à fibres longues et la pâte à fibres courtes pour former une pâte à papier de couche de sommet;- puis laisser couler la pâte à papier de couche de fond et la pâte à papier de couche de sommet sur un filet de papeterie respectivement, additionner des équipements auxiliaires de rétention et drainage au système d'empesage, faire double pliage, laminage, pressage, séchage, enduction, calandrage et enroulage pour obtenir le carton kraft doublé respectueux de environnement à haute-performance.
- Méthode de préparation selon la revendication 6, caractérisé en ce que la enduction de l'étape (2) adopte une méthode de enduction à rouleau doseur, revêtant le styrène-acrylique latex ignifuge sur ladite couche de sommet du carton kraft doublé obtenue par double pliage, laminage, pressage et séchage, de manière à former une couche de revêtement.
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