CN1826447A - Printing paper - Google Patents
Printing paper Download PDFInfo
- Publication number
- CN1826447A CN1826447A CNA2004800207590A CN200480020759A CN1826447A CN 1826447 A CN1826447 A CN 1826447A CN A2004800207590 A CNA2004800207590 A CN A2004800207590A CN 200480020759 A CN200480020759 A CN 200480020759A CN 1826447 A CN1826447 A CN 1826447A
- Authority
- CN
- China
- Prior art keywords
- paper
- pulp
- fading
- visible light
- ultraviolet ray
- 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
- 238000007639 printing Methods 0.000 title claims abstract description 28
- 229920001131 Pulp (paper) Polymers 0.000 claims abstract description 101
- 239000003638 chemical reducing agent Substances 0.000 claims abstract description 23
- 239000007800 oxidant agent Substances 0.000 claims abstract description 23
- -1 semichemical pulps Polymers 0.000 claims abstract description 12
- 230000001590 oxidative effect Effects 0.000 claims description 23
- 239000001257 hydrogen Substances 0.000 claims description 22
- 229910052739 hydrogen Inorganic materials 0.000 claims description 22
- 150000001875 compounds Chemical class 0.000 claims description 18
- 230000005855 radiation Effects 0.000 claims description 18
- 238000012545 processing Methods 0.000 claims description 11
- 239000000203 mixture Substances 0.000 claims description 8
- 239000012279 sodium borohydride Substances 0.000 claims description 7
- 229910000033 sodium borohydride Inorganic materials 0.000 claims description 7
- 238000006197 hydroboration reaction Methods 0.000 claims description 4
- 150000002894 organic compounds Chemical class 0.000 abstract description 15
- 239000000654 additive Substances 0.000 abstract description 8
- 230000000996 additive effect Effects 0.000 abstract description 8
- 238000002845 discoloration Methods 0.000 abstract 3
- 239000000123 paper Substances 0.000 description 87
- 238000005562 fading Methods 0.000 description 48
- 238000000034 method Methods 0.000 description 28
- 238000004061 bleaching Methods 0.000 description 27
- 229920005610 lignin Polymers 0.000 description 21
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 17
- 230000000052 comparative effect Effects 0.000 description 14
- OSVXSBDYLRYLIG-UHFFFAOYSA-N dioxidochlorine(.) Chemical compound O=Cl=O OSVXSBDYLRYLIG-UHFFFAOYSA-N 0.000 description 14
- 239000002904 solvent Substances 0.000 description 14
- 239000003795 chemical substances by application Substances 0.000 description 13
- 239000013256 coordination polymer Substances 0.000 description 12
- 238000004519 manufacturing process Methods 0.000 description 12
- 239000002253 acid Substances 0.000 description 11
- 239000000463 material Substances 0.000 description 11
- 239000011248 coating agent Substances 0.000 description 10
- 238000000576 coating method Methods 0.000 description 10
- 238000005516 engineering process Methods 0.000 description 10
- 238000012360 testing method Methods 0.000 description 9
- AZQWKYJCGOJGHM-UHFFFAOYSA-N 1,4-benzoquinone Chemical compound O=C1C=CC(=O)C=C1 AZQWKYJCGOJGHM-UHFFFAOYSA-N 0.000 description 8
- 239000004155 Chlorine dioxide Substances 0.000 description 8
- 230000003750 conditioning effect Effects 0.000 description 8
- 230000000694 effects Effects 0.000 description 8
- 230000008569 process Effects 0.000 description 8
- 239000000047 product Substances 0.000 description 8
- 239000002994 raw material Substances 0.000 description 8
- 239000003607 modifier Substances 0.000 description 7
- 150000004053 quinones Chemical class 0.000 description 7
- 239000000126 substance Substances 0.000 description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 7
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 6
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 description 6
- 125000000217 alkyl group Chemical group 0.000 description 6
- 229910052799 carbon Inorganic materials 0.000 description 6
- 238000006243 chemical reaction Methods 0.000 description 6
- 235000019398 chlorine dioxide Nutrition 0.000 description 6
- 238000004040 coloring Methods 0.000 description 6
- 239000000945 filler Substances 0.000 description 6
- WQYVRQLZKVEZGA-UHFFFAOYSA-N hypochlorite Chemical compound Cl[O-] WQYVRQLZKVEZGA-UHFFFAOYSA-N 0.000 description 6
- 239000003513 alkali Substances 0.000 description 5
- 238000000354 decomposition reaction Methods 0.000 description 5
- 239000002655 kraft paper Substances 0.000 description 5
- 239000007787 solid Substances 0.000 description 5
- 239000004215 Carbon black (E152) Substances 0.000 description 4
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 4
- 229920002472 Starch Polymers 0.000 description 4
- 150000001298 alcohols Chemical class 0.000 description 4
- 125000003118 aryl group Chemical group 0.000 description 4
- 239000007844 bleaching agent Substances 0.000 description 4
- 239000003814 drug Substances 0.000 description 4
- 238000001035 drying Methods 0.000 description 4
- 239000000835 fiber Substances 0.000 description 4
- 229930195733 hydrocarbon Natural products 0.000 description 4
- 238000005984 hydrogenation reaction Methods 0.000 description 4
- 230000005764 inhibitory process Effects 0.000 description 4
- 239000007788 liquid Substances 0.000 description 4
- 229910021645 metal ion Inorganic materials 0.000 description 4
- 150000001451 organic peroxides Chemical class 0.000 description 4
- 150000002978 peroxides Chemical group 0.000 description 4
- 239000012744 reinforcing agent Substances 0.000 description 4
- 239000008107 starch Substances 0.000 description 4
- 235000019698 starch Nutrition 0.000 description 4
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 3
- DIZPMCHEQGEION-UHFFFAOYSA-H aluminium sulfate (anhydrous) Chemical compound [Al+3].[Al+3].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O DIZPMCHEQGEION-UHFFFAOYSA-H 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 3
- 230000002349 favourable effect Effects 0.000 description 3
- XPFVYQJUAUNWIW-UHFFFAOYSA-N furfuryl alcohol Chemical compound OCC1=CC=CO1 XPFVYQJUAUNWIW-UHFFFAOYSA-N 0.000 description 3
- 238000005286 illumination Methods 0.000 description 3
- 150000002500 ions Chemical class 0.000 description 3
- 230000007246 mechanism Effects 0.000 description 3
- 230000003647 oxidation Effects 0.000 description 3
- 238000007254 oxidation reaction Methods 0.000 description 3
- 229940088417 precipitated calcium carbonate Drugs 0.000 description 3
- 239000006097 ultraviolet radiation absorber Substances 0.000 description 3
- 229920003169 water-soluble polymer Polymers 0.000 description 3
- 229910052724 xenon Inorganic materials 0.000 description 3
- FHNFHKCVQCLJFQ-UHFFFAOYSA-N xenon atom Chemical compound [Xe] FHNFHKCVQCLJFQ-UHFFFAOYSA-N 0.000 description 3
- DLFVBJFMPXGRIB-UHFFFAOYSA-N Acetamide Chemical compound CC(N)=O DLFVBJFMPXGRIB-UHFFFAOYSA-N 0.000 description 2
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 2
- ZHNUHDYFZUAESO-UHFFFAOYSA-N Formamide Chemical compound NC=O ZHNUHDYFZUAESO-UHFFFAOYSA-N 0.000 description 2
- 239000004368 Modified starch Substances 0.000 description 2
- 229920000881 Modified starch Polymers 0.000 description 2
- KFSLWBXXFJQRDL-UHFFFAOYSA-N Peracetic acid Chemical compound CC(=O)OO KFSLWBXXFJQRDL-UHFFFAOYSA-N 0.000 description 2
- 239000004952 Polyamide Substances 0.000 description 2
- 239000004372 Polyvinyl alcohol Substances 0.000 description 2
- 241000183024 Populus tremula Species 0.000 description 2
- LSNNMFCWUKXFEE-UHFFFAOYSA-N Sulfurous acid Chemical compound OS(O)=O LSNNMFCWUKXFEE-UHFFFAOYSA-N 0.000 description 2
- 125000004453 alkoxycarbonyl group Chemical group 0.000 description 2
- 125000004448 alkyl carbonyl group Chemical group 0.000 description 2
- 239000007864 aqueous solution Substances 0.000 description 2
- 125000005161 aryl oxy carbonyl group Chemical group 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- UORVGPXVDQYIDP-UHFFFAOYSA-N borane Chemical class B UORVGPXVDQYIDP-UHFFFAOYSA-N 0.000 description 2
- 229910010277 boron hydride Inorganic materials 0.000 description 2
- 125000002915 carbonyl group Chemical group [*:2]C([*:1])=O 0.000 description 2
- 239000003054 catalyst Substances 0.000 description 2
- 125000002091 cationic group Chemical group 0.000 description 2
- 229920002678 cellulose Polymers 0.000 description 2
- 239000001913 cellulose Substances 0.000 description 2
- 239000000460 chlorine Substances 0.000 description 2
- 238000013329 compounding Methods 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 239000006185 dispersion Substances 0.000 description 2
- 150000002148 esters Chemical class 0.000 description 2
- 230000005284 excitation Effects 0.000 description 2
- 239000012467 final product Substances 0.000 description 2
- 239000003292 glue Substances 0.000 description 2
- 238000009897 hydrogen peroxide bleaching Methods 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 235000019426 modified starch Nutrition 0.000 description 2
- 239000005416 organic matter Substances 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 239000010893 paper waste Substances 0.000 description 2
- 150000004965 peroxy acids Chemical class 0.000 description 2
- 229920002647 polyamide Polymers 0.000 description 2
- 229920002451 polyvinyl alcohol Polymers 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 238000004513 sizing Methods 0.000 description 2
- 239000002002 slurry Substances 0.000 description 2
- 239000011122 softwood Substances 0.000 description 2
- JNIQBPHJIAOMQU-FSIIMWSLSA-N (2s,3s,4s,5r)-2,3,4,5-tetrahydroxy-6-oxoheptanoic acid Chemical compound CC(=O)[C@H](O)[C@@H](O)[C@H](O)[C@H](O)C(O)=O JNIQBPHJIAOMQU-FSIIMWSLSA-N 0.000 description 1
- 229940005561 1,4-benzoquinone Drugs 0.000 description 1
- LJGHYPLBDBRCRZ-UHFFFAOYSA-N 3-(3-aminophenyl)sulfonylaniline Chemical compound NC1=CC=CC(S(=O)(=O)C=2C=C(N)C=CC=2)=C1 LJGHYPLBDBRCRZ-UHFFFAOYSA-N 0.000 description 1
- 239000005995 Aluminium silicate Substances 0.000 description 1
- 229920002134 Carboxymethyl cellulose Polymers 0.000 description 1
- 229920002488 Hemicellulose Polymers 0.000 description 1
- 241000276489 Merlangius merlangus Species 0.000 description 1
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 1
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 1
- 229920001807 Urea-formaldehyde Polymers 0.000 description 1
- 230000002745 absorbent Effects 0.000 description 1
- 239000002250 absorbent Substances 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 125000002777 acetyl group Chemical group [H]C([H])([H])C(*)=O 0.000 description 1
- 238000005903 acid hydrolysis reaction Methods 0.000 description 1
- 239000011149 active material Substances 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 150000001335 aliphatic alkanes Chemical class 0.000 description 1
- 125000001931 aliphatic group Chemical group 0.000 description 1
- 229910052783 alkali metal Inorganic materials 0.000 description 1
- 150000001340 alkali metals Chemical class 0.000 description 1
- 229910052784 alkaline earth metal Inorganic materials 0.000 description 1
- 150000001342 alkaline earth metals Chemical class 0.000 description 1
- 235000012211 aluminium silicate Nutrition 0.000 description 1
- 125000005428 anthryl group Chemical group [H]C1=C([H])C([H])=C2C([H])=C3C(*)=C([H])C([H])=C([H])C3=C([H])C2=C1[H] 0.000 description 1
- 229910052786 argon Inorganic materials 0.000 description 1
- 238000003556 assay Methods 0.000 description 1
- 239000002585 base Substances 0.000 description 1
- 150000004054 benzoquinones Chemical group 0.000 description 1
- 125000003236 benzoyl group Chemical group [H]C1=C([H])C([H])=C(C([H])=C1[H])C(*)=O 0.000 description 1
- 239000006229 carbon black Substances 0.000 description 1
- MMCOUVMKNAHQOY-UHFFFAOYSA-N carbonoperoxoic acid Chemical class OOC(O)=O MMCOUVMKNAHQOY-UHFFFAOYSA-N 0.000 description 1
- 239000001768 carboxy methyl cellulose Substances 0.000 description 1
- 235000010948 carboxy methyl cellulose Nutrition 0.000 description 1
- 239000008112 carboxymethyl-cellulose Substances 0.000 description 1
- 206010061592 cardiac fibrillation Diseases 0.000 description 1
- 150000001804 chlorine Chemical class 0.000 description 1
- 229910052801 chlorine Inorganic materials 0.000 description 1
- 229910001902 chlorine oxide Inorganic materials 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 239000013530 defoamer Substances 0.000 description 1
- 230000017858 demethylation Effects 0.000 description 1
- 238000010520 demethylation reaction Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 230000029087 digestion Effects 0.000 description 1
- FPAFDBFIGPHWGO-UHFFFAOYSA-N dioxosilane;oxomagnesium;hydrate Chemical compound O.[Mg]=O.[Mg]=O.[Mg]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O FPAFDBFIGPHWGO-UHFFFAOYSA-N 0.000 description 1
- 238000007598 dipping method Methods 0.000 description 1
- VTIIJXUACCWYHX-UHFFFAOYSA-L disodium;carboxylatooxy carbonate Chemical compound [Na+].[Na+].[O-]C(=O)OOC([O-])=O VTIIJXUACCWYHX-UHFFFAOYSA-L 0.000 description 1
- 239000000975 dye Substances 0.000 description 1
- 239000000839 emulsion Substances 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- DNJIEGIFACGWOD-UHFFFAOYSA-N ethanethiol Chemical compound CCS DNJIEGIFACGWOD-UHFFFAOYSA-N 0.000 description 1
- 150000002170 ethers Chemical class 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 230000002600 fibrillogenic effect Effects 0.000 description 1
- WSFSSNUMVMOOMR-UHFFFAOYSA-N formaldehyde Substances O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 230000005283 ground state Effects 0.000 description 1
- 229910052736 halogen Inorganic materials 0.000 description 1
- 150000002367 halogens Chemical class 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- YVJRCWCFDJYONJ-UHFFFAOYSA-N hydroperoxymethylbenzene Chemical compound OOCC1=CC=CC=C1 YVJRCWCFDJYONJ-UHFFFAOYSA-N 0.000 description 1
- 238000005470 impregnation Methods 0.000 description 1
- 229910001410 inorganic ion Inorganic materials 0.000 description 1
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 description 1
- 229910052743 krypton Inorganic materials 0.000 description 1
- 239000004611 light stabiliser Substances 0.000 description 1
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 description 1
- 150000001455 metallic ions Chemical class 0.000 description 1
- 125000001160 methoxycarbonyl group Chemical group [H]C([H])([H])OC(*)=O 0.000 description 1
- 239000012046 mixed solvent Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- UFWIBTONFRDIAS-UHFFFAOYSA-N naphthalene-acid Natural products C1=CC=CC2=CC=CC=C21 UFWIBTONFRDIAS-UHFFFAOYSA-N 0.000 description 1
- 125000001624 naphthyl group Chemical group 0.000 description 1
- 239000001254 oxidized starch Substances 0.000 description 1
- 235000013808 oxidized starch Nutrition 0.000 description 1
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 description 1
- WVDDGKGOMKODPV-ZQBYOMGUSA-N phenyl(114C)methanol Chemical compound O[14CH2]C1=CC=CC=C1 WVDDGKGOMKODPV-ZQBYOMGUSA-N 0.000 description 1
- 239000000049 pigment Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 229920002401 polyacrylamide Polymers 0.000 description 1
- 229920000768 polyamine Polymers 0.000 description 1
- ODGAOXROABLFNM-UHFFFAOYSA-N polynoxylin Chemical compound O=C.NC(N)=O ODGAOXROABLFNM-UHFFFAOYSA-N 0.000 description 1
- 238000004076 pulp bleaching Methods 0.000 description 1
- 125000001453 quaternary ammonium group Chemical group 0.000 description 1
- 230000035484 reaction time Effects 0.000 description 1
- 230000009257 reactivity Effects 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 239000012779 reinforcing material Substances 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 150000003283 rhodium Chemical class 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 229940045872 sodium percarbonate Drugs 0.000 description 1
- PFUVRDFDKPNGAV-UHFFFAOYSA-N sodium peroxide Chemical compound [Na+].[Na+].[O-][O-] PFUVRDFDKPNGAV-UHFFFAOYSA-N 0.000 description 1
- AKHNMLFCWUSKQB-UHFFFAOYSA-L sodium thiosulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=S AKHNMLFCWUSKQB-UHFFFAOYSA-L 0.000 description 1
- 235000019345 sodium thiosulphate Nutrition 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 125000001424 substituent group Chemical group 0.000 description 1
- LSNNMFCWUKXFEE-UHFFFAOYSA-L sulfite Chemical compound [O-]S([O-])=O LSNNMFCWUKXFEE-UHFFFAOYSA-L 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 1
- 230000001988 toxicity Effects 0.000 description 1
- 231100000419 toxicity Toxicity 0.000 description 1
- 238000010023 transfer printing Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Classifications
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21C—PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
- D21C9/00—After-treatment of cellulose pulp, e.g. of wood pulp, or cotton linters ; Treatment of dilute or dewatered pulp or process improvement taking place after obtaining the raw cellulosic material and not provided for elsewhere
- D21C9/001—Modification of pulp properties
-
- 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
- D21H25/00—After-treatment of paper not provided for in groups D21H17/00 - D21H23/00
- D21H25/04—Physical treatment, e.g. heating, irradiating
-
- 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
- D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
- D21H17/63—Inorganic compounds
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Wood Science & Technology (AREA)
- Paper (AREA)
Abstract
Printing papers with reduced discoloration are obtained by using a pulp with improved discoloration. Printing papers with remarkably improved discoloration can be obtained by including a pulp consisting of one member or a mixed pulp of two or more members of bleached or unbleached mechanical pulps, semichemical pulps, chemical pulps and deinked pulps irradiated with UV and/or visible light in the presence of at least one additive selected from the group consisting of reducing agents, oxidizing agents and hydrogen-donating organic compounds.
Description
Technical field
The present invention relates to bulk and whiteness changes for a short time in time, few printing that promptly fades particularly is suitable for the printing of books purposes.
Background technology
Raising along with the environmental protection degree; effectively utilizing on the paper making pulp of making by the forest reserves; with make productive rate and be about chemical pulps such as kraft pulp, alkaline pulp and sulfite pulp about 50% (below be designated as CP) and compare, improve productive rate is favourable up to the compounding amount of the stone mill wood pulp 90% or more, refining ground wood pulp, the mechanical pulps such as ground wood pulp, thermomechanical pulp, chemical thermo-mechanical pulp and bleached chemical thermomechanical pulp that pressurize (below be designated as MP) as far as possible.In addition, also need to improve the utilization rate of the secondary stock that dissociates after paper is used once and use again (below be designated as DIP).
On the other hand, lighting is the main quality that paper need possess.Herein, the lighting of paper is meant the lighting that keeps under the paper thickness situation, the i.e. paper of index and low density (bulk).As the method that makes paper low-densityization (bulking), with the reinforcing material of removing by chemicals in the fiber---the CP of lignin compares, timber is ground and the MP of the wood pulp that obtains and thermomechanical pulp of the timber fibrillation being obtained with refiner and so on has harder fiber, has better reduction density effect with grinder, ground wood pulp especially plays an important role to low-densityization.In the lighting of this resources effective utilization and paper, MP is more favourable, but its use causes whiteness over time, promptly the problem of fading becomes serious, particularly for the high paper of whiteness, owing to there being this fading serious quality problems to occur, thereby it uses proportioning to be restricted.Can save timber resources though improve the use proportioning of deinked pulp, but waste paper seldom is clearly to classify by kinds such as wood-free paper, newspaper, magazine, handbill, art papers to carry out slurrying, carry out slurrying under the admixture but be in, therefore on fading, still demonstrate the quality identical with MP at MP.Thereby, in order in wood-free class paper, to allocate deinked pulp into, must use the waste paper of clear classification.Under the situation of considering resource problem as mentioned above, the usage ratio that increases MP or DIP as much as possible is more favourable, in addition, though by allocating the lighting that MP can help paper into, but have the problem of fading in time, this is for long books especially serious problem with paper standing time in bookstore.
The kind of problem that paper pulp fades in time and CP, semichemical wood pulp (below be designated as SCP), paper pulp such as MP, DIP is irrelevant, it is the problem that has, but the degree of fading mainly is subjected to the influence of lignin in the paper pulp or its modifier residual quantity, the residual quantity of lignin or its modifier is many more, easy more fading.Therefore, with regard to the kind of paper pulp, secondly the easiest the fading of MP that lignin or its modifier residual quantity are many be SCP, CP.Fading of DIP depends on that to a great extent the MP that is contained measures.
Lignin is oxidized during association with pulp bleaching, generates the modifier quinhydrones.This quinhydrones is oxidized to quinone by the reaction shown in the Chemical formula 1 easily, produces painted.And, in the paper pulp residual not oxidative lignin also can regenerate quinones by ultraviolet ray excited, oxidation Decomposition by the reaction shown in the Chemical formula 2, cause painted.Therefore, as the prior art of improving fading property of paper pulp, normally in the bleaching process of paper pulp, cause the material that fades by adding the decomposition of bleaching medicine or bases medicament or removing---lignin or its modifier etc.
The mechanism of fading of MP is identical because of the mechanism that lignin fades with above-mentioned paper pulp, but compares with CP and SCP, and the lignin among the MP or the residual quantity of its modifier are big, and it is more serious than CP and SCP therefore to fade.When MP carries out hydrogen peroxide bleaching, generate quinhydrones by this oxidized lignin, this quinhydrones is oxidized to quinone easily, and this is that serious painted one of the main reasons takes place for it.In addition, owing to strengthen bleaching more, the growing amount of quinhydrones is just many more, so the high more MP of whiteness fades serious more.And contained residual not oxidative lignin also can be by the ultraviolet ray excited oxidation Decomposition that takes place among the MP, regenerates quinones and causes painted.Therefore, the main cause that MP significantly fades is a quinones, if can in advance quinones be decomposed, just can suppress significantly fading of MP significantly, people's multiple effect as described below that waits in expectation: 1) contain the steady qualityization, 2 of the paper products of MP at present) makes in the paper products that its match ratio is restricted fading because of MP, improve the match ratio of MP, make bulk lighting become possibility, 3) make and can also develop the new product that contains MP etc.
In order to solve this problem of fading of MP, multiple scheme has been proposed all the time, for example disclose recently and with the method (referring to non-patent literature 2) of water-soluble ultra-violet absorber and light stabilizer.In addition, the method (referring to non-patent literature 1) that the aromatic rings that lignin had among the MP is reduced is also disclosed.But,, thereby have the shortcoming that effect can not keep for a long time owing to ultra-violet absorber etc. also can be because of deterioration take place in ultraviolet ray.On the other hand, when in the reduction of lignin aromatic rings, using rhodium class catalyst, at room temperature with the result of the aromatic rings hydrogenation of the lignin of implementing to separate from timber in the aqueous solution of alcohol be: the partial hydrogenation of aromatic rings need reach 5 days time, and employed catalyst is emulsion, therefore can think with paper pulp fiber in the lignin that exists directly reaction be extremely difficult.Therefore, these existing methods under any circumstance can not reach the effect that abundant inhibition is faded, the present problem that still exists processing time length, do not have economy, practicality.
In addition, though situation does not have MP serious, CP also fades.The same with MP, if can suppress its fading property, also can expect with CP be the paper products of raw material stay in gradeization, the exploitation of new product is become may wait effect.
[changing 1]
[changing 2]
As the prior art of improving fading property of CP, after deliberation decompose, remove and cause the material that fades with chemicals---the method for lignin or hexenuronic acid.But in the method, in order to decompose except that delignification, need a large amount of chemicalss, this processing causes that bleaching back pulp yield is low, the problem of paper pulp fiber intensity difference.In addition, for removing hexenuronic acid, need a large amount of acid, this can cause the problem of paper pulp fiber intensity difference again.If can decompose above-mentioned quinones in advance, then can expect with CP be the paper products of raw material stay in gradeization, make the exploitation of new product become possibility.
As prior art, there is document (referring to non-patent literature 3) to disclose hydrogen peroxide bleaching under alkali condition in the stage, at high temperature the adding rate of hydrogen peroxide is high more, the reaction time is long more, and fading property just can improve more.In addition, there is a kind of method for bleaching to be registered patent, it is characterized in that, when the paper pulp that is obtained by the lignocellulose material being bleached by the bleaching order of chlorine and/or chlorine dioxide stage-alkali/oxygen stage-chlorine dioxide stage-chlorine dioxide stage, add alkali in initial reaction section later stage of continuous chlorine dioxide stage, and to make the chlorine dioxide ratio of first section and second section be 40/60～70/30 (referring to patent documentation 1).In addition, also have a kind of method for bleaching to be registered patent, it is characterized in that, in the multistep method for bleaching of the operation of after containing useful chlorine, the paper pulp of alkaline extraction, handling with hypochlorite again by the acquisition of lignocellulose material, adding with respect to adiabatic drying paper pulp in stage of bleaching with hypochlorite is alkali more than 1.0%, and under the temperature more than 60 ℃ pulp treatment (referring to patent documentation 2).In addition, technology with following feature is also disclosed: as bleaching stage, carry out bleached paper pulp with the zytase processing by the order that contains chlorine class bleaching stage more than at least one section, bleach (referring to patent documentation 3) in proper order by the bleaching of hypochlorite and chlorine dioxide stage again.Following technology is also disclosed in addition: will be by the bleached pulp of lignocellulose material acquisition, passing through the operation of the consecutive order that comprises high temperature high alkalinity sodium thiosulfate bleaching section and ClO 2 bleaching section again bleaches, thereby make in the manufacture method of high whiteness paper pulp, make the adding rate of chlorine dioxide in the operation of ClO 2 bleaching section be in the scope of 1～3 weight % with respect to adiabatic drying paper pulp, the ratio of chlorine dioxide/alkali is in 1/0.05～1/0.3 the scope, and at high temperature implements (referring to patent documentation 4).
In addition, as the relevant new discovery that relates to the material that ECF or TCF bleached pulp fade, the known hexenuronic acid that except lignin and modifier thereof, also relates to.This hexenuronic acid carries out demethylation by the methylglucuronic acid in the hemicellulose and generates in digestion process.It is said that this hexenuronic acid is relevant with the fading property of paper pulp.As removing one of method of this hexenuronic acid, proposed under higher temperature, to carry out acid-treated technology.Wherein by under high temperature and acid condition, paper pulp before bleaching being handled, make this hexenuronic acid and lignin modification thing carry out acid hydrolysis and remove.For example disclose following technology: heating is by the turbid liquid of the cellulose pulp of sulfate process or alkaline process manufacturing, under the condition of about 85～150 ℃ and about pH2～5, handle, remove hexenuronic acid in the cellulose pulp at least about 50%, make the Kappa value of paper pulp reduce 2～9 units (referring to patent documentation 5).
In addition, as one of the present patent application people's Independent Administrative Leged Industrial Technology Complex Inst proposed relevant paper pulp method for bleaching, be three patent applications of content with irradiation ultraviolet radiation and/or visible light.The technology (referring to patent documentation 6) of shining with ultraviolet ray and/or visible light is wherein disclosed with the reductant bleached pulp time.In addition, also disclose as oxidant with the organic peroxide of ROOR ' expression in the presence of, the technology (referring to patent documentation 7) of shining with ultraviolet ray and/or visible light.Technology (referring to patent documentation 8) with hydrogen peroxide and ultraviolet ray and/or radiation of visible light and usefulness is also disclosed in addition.Paper pulp after the present invention relates to above-mentioned invention technology in first to file is applied to bleach and the fading property of paper pulp is improved, and the few printing that fades that uses this paper pulp to obtain.
Non-patent literature 1:Yuan, Z., et al., J.Pulp Paper Sci., 28 (5), 159 (2002)
Non-patent literature 2:Hu, T.Q., et al., J.Pulp Paper Sci., 25 (9), 312 (1999)
Non-patent literature 3:The Bleaching of Pulp, P382, P384, TAPPIPRESS (1979), N.Hartler, TAPPI 43 (11) 903 (1960)
Patent documentation 1: special fair 7-6147 communique
Patent documentation 2: specially permit specification No. 2115315
Patent documentation 3: the spy opens flat 6-101185 communique
Patent documentation 4: the spy opens flat 9-105091 communique
Patent documentation 5: the flat 10-508346 communique of special table
Patent documentation 6: specially permit No. 3371228
Patent documentation 7: specially permit No. 3368336
Patent documentation 8: the spy opens the 2002-88673 communique
Summary of the invention
Problem to be solved by this invention is by the improved paper pulp of fading property of use; acquisition few printing that fades; thereby the printing that provides fading property with following feature to significantly improve: (1) whiteness changes little; promptly fade and be inhibited; (2) by allocating many especially MP into; make lighting become possibility, (3) have good protection of resources and environment friendly because the use level of MP, DIP increases.
The inventor carries out wholwe-hearted research, found that, can obtain the printing that fading property significantly improves by the paper pulp that contains through following processing, promptly be selected from reductant, oxidant, give at least a kind additive in the hydrogen organic compound in the presence of, with ultraviolet ray and/or visible light to bleach or unbleached mechanical pulp, semichemical wood pulp, chemical pulp, de inked pulp in the mixed pulp more than a kind or 2 kinds carry out treatment with irradiation.In addition, in printing or its manufacturing process, be selected from reductant, oxidant, give at least a kind additive in the hydrogen organic compound in the presence of, handle by ultraviolet ray and/or radiation of visible light, can obtain the printing that fading property significantly improves too.
Be selected from reductant, oxidant, give at least a kind compound in the hydrogen organic compound in the presence of, allocate into through the paper pulp of ultraviolet ray and/or radiation of visible light and copy paper or the paper after manufacturing paper with pulp is carried out ultraviolet ray and/or radiation of visible light equally and improves fading property, by providing above fading property of improvement method to make fading of paper be suppressed, the extra high MP of productive rate is handled or is applied to be furnished with the paper of MP significantly, the bulk paper of lightweight of just can enough timber resources still less manufacturing paper with pulp has the effect that helps environment.
The specific embodiment
The employed paper pulp of printing of the present invention is with the paper pulp as raw material such as the bleaching that is obtained by timber or unbleached mechanical pulp, semichemical wood pulp, chemical pulp, de inked pulp.Can be a kind of paper pulp wherein, also can be the mixture of paper pulp more than 2 kinds wherein.What is called is herein bleached and is meant for unbleached pulp, the paper pulp of rapid or short in proper order bleaching through for example conventional multistep.Because the present invention has fabulous effect for the significant paper pulp of fading property, put at this point, be object preferably with the mechanical pulp after the bleaching.
As the compound that is used to improve fading property of paper pulp that uses among the present invention, can use the known reductant, oxidant, the hydrogen supply organic compound that use as bleaching agent, decolorizer.Under the existence of at least a kind of compound therein, paper pulp is handled.
As this reductant, can enumerate, for example sulphite or bisulfite ions, bisulfites, borohydride compound etc.This boron hydride is usually with following general formula (1) or (2) expression.
M (BR
4-nH
n)
mGeneral formula (1)
(integer of n=1～4, the integer of m=1～3, M=metal ion, organic ion or inorganic ions, R=alkyl or substituted hydrocarbon radical)
BR
3-nH
nGeneral formula (2)
(integer of n=1～3, R=alkyl or substituted hydrocarbon radical)
It is the monovalent metallic ion of representative that metal ion in the above-mentioned general formula (1) comprises with alkali metal, be bivalent metal ion, and the trivalent metal ion of representative with the alkaline-earth metal, the organic matter ion is advisable with stable ion, preferred especially quaternary ammonium ion.In addition, as R, can enumerate preferred carbon number is 1～20, more preferably carbon number is 1～10 aliphatic group, preferred carbon number is 6～20, more preferably carbon number is 6～14 aromatic hydrocarbyl, and preferred carbon number is 7～40, and more preferably carbon number is 7～24 an alkyl substituted hydrocarbon radical etc.In addition, when having two above substituent R, R can be identical or different.The preferred especially boron hydride that uses is sodium borohydride or hydroboration TBuA among the present invention.Also can use sodium borohydride or hydroboration TBuA or their mixture.
Oxidant is preferably peroxide.As peroxide, can use any organic peroxide and inorganic peroxide.As organic peroxide, can use the compound of following general formula (3) expression.
ROOR ' general formula (3)
(R and R ' can be identical or different, expression alkyl, alkyl carbonyl, aromatic carbonyl, alkoxy carbonyl group, aryloxy carbonyl, formoxyl or hydrogen.)
As alkyl, can enumerate aromatic hydrocarbyls such as phenyl, naphthyl, xenyl, anthryl, aliphatic alkyl, their replacement body etc.; As alkyl carbonyl, can enumerate acetyl group, B carbonyl, propiono carbonyl, their replacement form etc.As aromatic carbonyl, can enumerate benzoyl, naphthalene carbonyl, biphenylyl carbonyl, their replacement form etc.As alkoxy carbonyl group, can enumerate methoxycarbonyl group, carbethoxyl group, their replacement form etc.Complete is aryloxy carbonyl, can enumerate carbobenzoxy, naphthalene oxygen carbonyl, biphenyl oxygen carbonyl, their replacement form etc.As the object lesson of these organic peroxides, can enumerate, for example the ester class of peracid such as benzylhydroperoxide and derivative thereof, peracetic acid, performic acid, these peracid, percarbonic acid and ester class thereof etc.As inorganic peroxide, can enumerate hydrogen peroxide, SODIUM PERCARBONATE, sodium peroxide etc.As other oxidant, can enumerate not halogen-containing oxidants such as ozone, oxygen.
As the hydrogen supply organic compound, preferred alcohols and amide-type, alcohols especially are advisable for the primary alconol of following formula (4) expression, specifically can enumerate ethanol, benzylalcohol, furfuryl alcohol etc.In addition, as amide-type, be preferably formamide and acetamide.But the hydrogen supply organic matter is not limited to above-mentioned alcohols and amide-type, gets final product so long as have the compound of hydrogen supply performance.
RCH
2OH general formula (4)
(R=alkyl or substituted hydrocarbon radical).
In addition, the reductant, oxidant, the hydrogen supply organic compound that are used for the processing of printing paper pulp of the present invention also can use separately under the situation of not using solvent, use but preferably be dispersed or dissolved in the solvent that can see through ultraviolet ray, visible light.As this solvent, can enumerate water, alcohols, chain or single solvent or their mixed solvents such as closed chain alkanes, ethers, but preferably make water.
The use amount of reductant, oxidant, hydrogen supply organic compound has no particular limits, as long as be in below the saturated concentration of this compound in solvent, is 0.01～40% (weight/volume) with respect to solvent preferably, and more preferably 0.1～20%.In addition, the use amount of reductant, oxidant, hydrogen supply organic compound is 0.05～50 solid content weight % with respect to the paper pulp solid content, more preferably 0.1～25 solid content weight %.
As ultraviolet ray and/or visible light, have no particular limits, but preferably use wavelength to be about 180～800nm, the light about preferred 200～500nm.This is because the maximum absorption wavelength of lignin, 1,4-benzoquinone and adjacent benzoquinones is respectively 280nm, 360nm, 390～410nm.As light source, can use conventional light sources such as Cooper-Hewitt lamp, high-pressure mercury-vapor lamp, xenon lamp, black light, and various excited quasi-molecular lampbulb and various laser etc.When handling on a large scale, the conventional light source of above-mentioned record is preferred.In addition, from the viewpoint of high speed processing, preferably use LASER Light Source.LASER Light Source has no particular limits, in addition, laser can be pulsed light or Continuous irradiation light, but preferably uses the 2nd and the 3rd harmonic wave of excimer laser (ArF excimer laser, KrF excimer laser, XeCl excimer laser, XeF excimer laser etc.), argon laser, krypton ion laser, YAG laser.
Intensity of illumination has no particular limits, and suitable is that pulsed light is 0.1mJ/ pulse cm
2～1.0kJ/ pulse cm
2, continuous light is 0.1mW/cm
2～10kW/cm
2Illumination temperature has no particular limits, but is preferably-80～100 ℃, more preferably 0～80 ℃.Light application time can consider that quality, additive or the solvent types of potential coloring material contained in the raw material paper pulp and concentration and the visible light that is shone and/or ultraviolet kind and intensity etc. carries out suitably determining, but common 1～60 minute just enough.
The paper pulp that uses in the printing of the present invention is not limited to special embodiment, so long as paper pulp and be selected from reductant, oxidant, hydrogen supply organic compound at least a compound in the presence of, get final product with ultraviolet ray or radiation of visible light.As preferred embodiment, for example can enumerate 1) contain at least a compound that is selected from reductant, oxidant, hydrogen supply organic compound, can see through in the solvent of ultraviolet ray and/or visible light, 2) raw material dispersion paper pulp, then 3) with the method for ultraviolet ray and/or radiation of visible light.Particularly, at described solvent is under the situation of water, interpolation is selected from least a compound of reductant, oxidant, hydrogen supply organic compound and mixes the pulp-water turbid liquid of discharging from bleaching process, uses ultraviolet ray and/or radiation of visible light then.In addition, can also enumerate 1) with the raw material paper pulp molding be tabular or laminar after, 2) be immersed in the solvent that contains at least a compound that is selected from reductant, oxidant, hydrogen supply organic compound or dipping after, 3) with methods such as ultraviolet ray and/or radiation of visible light.Particularly, at described solvent is under the situation of water, after bleaching finishes, machinery with pulp machine (pulp sheel machine) and so on dewaters to the pulp-water turbid liquid of discharging from bleaching process, with contain at least a compound that is selected from reductant, oxidant, hydrogen supply organic compound the tabular paper pulp of solvent impregnated formation, with ultraviolet ray and/or visible light it is shone then.
Another kind of possible method is 1) use raw material paper pulp, papermaking filler, various papermaking medicine, after manufacturing paper with pulp into printing by paper machine, 2) be immersed in the solvent that contains at least a compound that is selected from reductant, oxidant, hydrogen supply organic compound or with after this solvent coating 3) carry out treatment with irradiation with ultraviolet ray and/or visible light.
For the mechanism of fading and being inhibited of the paper pulp of handling by said method, details is not still understood, but the inventor has carried out following deduction.That is, because ultraviolet ray and/or visible light radiation, generated potential coloring material contained in the paper pulp, for example the quinhydrones that when bleaching, is decomposed to form of MP by lignin oxidation.Unoxidized residual unmodified lignin has generated various quinones during in addition, by bleaching.The present invention has utilized following phenomenon dexterously: because ultraviolet ray and/or visible light radiation, these quinones once more from ground state by electron excitation to excitation state, the result changes reactive high state into, thereby strengthened it and be selected from reductant, oxidant, the reaction of at least a compound in the hydrogen supply organic compound, the decomposition reaction of this coloring material or the hydrogenation phenomenon of multiple bond have been promoted, otherwise or, because this ultraviolet ray and/or visible light radiation, be selected from reductant, oxidant, at least a compound in the hydrogen supply organic compound is converted into and has more active material, thereby improved the reactivity with coloring material, strengthened the phenomenon of the hydrogenation of the decomposition reaction of this coloring material or multiple bond.
As the method that suppresses to fade, in the paper that forms by MP, add additive in the what is called that proposes in the past, for example in the method for sulfur alcohol compound, owing to only promoted the transformation reaction of quinone to quinhydrones, therefore can fade because of ultraviolet ray once more after additive exhausts, not only can not obtain basic improvement, also exist the high problem of stench and toxicity.But, among the present invention, in the presence of at least a compound in being selected from reductant, oxidant, hydrogen supply organic compound, by adopting the specific process of ultraviolet ray and/or radiation of visible light, make these problems all obtain solution, but also show remarkable result with fine environment friendly.
In addition, also attempted suppressing to fade at paper surface coating ultraviolet absorbent, the but only surface is told in this method, for example when making books, be not coated with ultra-violet absorber, thereby the effect that does not just have inhibition to fade on this face owing to cut face (cross section).With regard to paper of the present invention, because the integral body of paper or the paper pulp integral body of institute's compounding have been carried out the processing of fading, thereby fading of this face also obtained inhibition.
The fade use level of wood pulp that improve to handle of the process of using in the printing of the present invention has no particular limits, and is as implied above in addition, also can fade to improve to the paper integral body after once manufacturing paper with pulp and handle.But MP is more serious than the fading property of CP, therefore in order to raise the efficiency, preferably to MP or the DIP that only contains MP fade to improve and handle.
In printing of the present invention, can also contain the paper intensity reinforcing agent.As the paper intensity reinforcing agent, can illustration starch, modified starch, polyacrylamide, polyvinyl alcohol, polyamide polyamine resinoid, melamino-formaldehyde resinoid, urea-formaldehyde resinoid, polymine etc.The content of paper intensity reinforcing agent is more than the 0.1 weight % with respect to the adiabatic drying weight of paper pulp preferably, below the 2 weight %.
Except the paper pulp of improve handling through fading, can also use following composition as raw material paper pulp in the printing of the present invention: chemical pulp (bleached kraft pulp (LBKP) of acerose bleached kraft pulp (NBKP) or unbleached kraft pulp (NUKP), broad leaf tree or unbleached kraft pulp (LUKP) etc.), mechanical pulp (ground wood pulp (GP), thermomechanical pulp (TMP), chemical thermo-mechanical pulp (CTMP) etc.), de inked pulp (DIP) uses separately or mix use with arbitrary proportion.PH when copying paper can be any acidity, neutrality, alkalescence.
In addition, printing of the present invention can also contain filler.As filler, can use known fillers such as white carbon black, talcum powder, kaolin, clay, powdered whiting, precipitated calcium carbonate, titanium oxide, synthetic resin filler.
In case of necessity, printing of the present invention can also contain aluminum sulfate, sizing agent, productive rate improving agent, freeness improving agent, colouring agent, dyestuff, defoamer etc.
Printing of the present invention can not carry out coating processing fully, maybe can apply the surface conditioning agent that does not contain pigment, can be used as the coating body paper yet.In order to improve surface strength and applying glue, uncoated printing of the present invention is that the surface conditioning agent of main component applies in order to water soluble polymer preferably.As water soluble polymer, can use normally used surface conditioning agents such as starch, oxidized starch, modified starch, carboxymethyl cellulose, polyamide, polyvinyl alcohol separately, or use their mixture.In addition, in surface conditioning agent, except that water soluble polymer, also can add the sizing agent that adds that is used to improve the paper intensity reinforcing agent of resistance to water, surface strength and is used to give applying glue.Coating weight as surface conditioning agent, surface conditioning agent can be by two roller size press coaters, door roll coater, scraper metering coating machine (blademetering coater), bar type metering coating machine coating machines such as (rod metering coater) is coated with, but when using the coating machine of door roll coater and so on tunicle transfer printing mode, surface conditioning agent is retained in the surface of paper, the density increase tails off, thereby is preferred.The coating weight of surface conditioning agent is preferably every 0.1g/m
2More than, 3g/m
2Below.
As mentioned above, improve processing by allocating the paper pulp of improve handling through fading into or copying paper after, fading, can obtain fades be suppressed, whiteness changes little paper in time.Particularly carrying out selectivity by and more bulk MP higher than CP utilization rate fades to improve and handles and be used, can in be difficult to allocate into the high whiteness paper of MP because of the existence problem of fading, be used a large amount of MP in the past, thereby can obtain bulk, lightweight and can effectively utilize the preferred paper product of the forest reserves.Paper of the present invention can also be used as the body paper of offset paper, letterpress paper, photogravure paper, newspaper printing paper, electrophotography paper or coated paper, ink-jet recording paper, electrothermal sensitive recording paper, pressure sensitive recording paper etc. except can be used as books with the paper.
Embodiment
By the following examples the present invention is described in detail, but the present invention is not limited thereto.For the paper of making in embodiment and the comparative example, carry out the papery of following project and measure.These papery assay methods are as follows.
Unit are paper is heavy: carry out according to JIS P 8124:1998.
Thick, the density of paper: carry out according to JIS P 8118:1998.
ISO whiteness: carry out according to JIS P 8148.
The test of fading: the ultraviolet ray irradiation sample that in xenon lamp aging instrument (ス ガ testing machine (strain)), produces 1.0 hours with xenon lamp, measure the ISO whiteness then.Experimental condition is 63 ℃ of blackboard temperatures, humidity 50%, irradiation illumination 70W.
[embodiment 1]
By BCTMP (the 1) (chemical thermo-mechanical pulp of bleaching, ミ ラ-ウ エ ス Application company, ISO whiteness 85%, freeness CSF250ml) 10 part, in the mixed paper slurries of 90 parts of formation of LBKP (freeness CSF400ml), aluminum sulfate 0.9% (with respect to paper pulp) is mixed, internal additive cationic starch (trade name: Cato 3210, Japan NSC (strain) makes) 0.5% and to make the ash content of copying behind the paper be 6% precipitated calcium carbonate and talcous 6: 4 mixture, the unit are paper of manufacturing paper with pulp on orientation paper machine (Xiong Gu reason machine industry (strain) is made) heavily is 46g/m
2Paper.This sample be impregnated in 6% sodium borohydride (w/v) aqueous solution, place on the glass plate then.This moment, the impregnation amount of sodium borohydride was 18 solid content weight % with respect to paper pulp solid content weight.Use 40mJ/cm
2The KrF excimer laser of pulse, 5Hz shone 40 minutes it.After the laser irradiation is finished, sample is washed, carried out drying with revolving drier, the test of fading.
[embodiment 2]
Except the use level that makes BCTMP (1) is 30 parts, the use level of LBKP are 70 parts, to carry out fully and embodiment 1 identical operations.
[embodiment 3]
Except replacing BCTMP (1) in addition, carry out fully and embodiment 2 identical operations with BCTMP (2) (ミ ラ-ウ エ ス Application company, ISO whiteness 70%, softwood 25%, aspen 75%).
[embodiment 4]
BCTMP (1) (ミ ラ-ウ エ ス Application company dissociates under 2% concentration, ISO whiteness 85%, freeness 250ml C.S.F.), adding is 20% sodium borohydride (w/v) with respect to paper pulp in this paper pulp dispersion liquid, put into transparent plastic bag then, with Cooper-Hewitt lamp (AY-1 that (strain) Japanese Off オ ト サ イ エ Application ス society makes, 244w/m
2) irradiation ultraviolet radiation 12 hours, wash.Then in by (1) 10 part of the BCTMP that passes through this ultraviolet ray treatment with irradiation, 90 parts of mixed paper slurries that form of LBKP (freeness 4000mlC.S.F.), aluminum sulfate 0.9% (with respect to paper pulp), internal additive cationic starch 0.5% are mixed, and to make the ash content of copying behind the paper be 6% precipitated calcium carbonate, and the paper of manufacturing paper with pulp on orientation paper machine (Xiong Gu reason machine industry (strain) is made) heavily is 46g/m
2Paper.To the test of fading of this sample.
[embodiment 5]
Except making use level through the BCTMP after the ultraviolet treatment with irradiation (1) is 30 parts, the use level of LBKP are 70 parts, to carry out fully and embodiment 4 identical operations.
[embodiment 6]
Except using BCTMP (2) (ミ ラ-ウ エ ス Application company, ISO whiteness 70%, softwood 25%, aspen 75%) is carried out carrying out 4 identical operations with embodiment outside the paper pulp of ultraviolet treatment with irradiation formation.
[comparative example 1]
Do not use BCTMP, making LBKP is 100 parts, allocates the inside identical with embodiment 1 into and adds medicine, filler, copies paper on the orientation paper machine.To the test of fading of this sample.
[comparative example 2]
In embodiment 1, with the sample that uses the orientation paper machine the to manufacture paper with pulp test of directly fading.
[comparative example 3]
In embodiment 2, with the sample that uses the orientation paper machine the to manufacture paper with pulp test of directly fading.
[comparative example 4]
In embodiment 3, with the sample that uses the orientation paper machine the to manufacture paper with pulp test of directly fading.
[table 1]
Table 1
| Whiteness when fading test was handled 1 hour in 0 hour | Heavy (the g/m of unit are paper 2) | Paper thick (μ m) | Density (g/cm 3) | ||
| Comparative example 1 | 79.7 | 78.5 | 45.8 | 69 | 0.66 |
| Comparative example 2 | 78.3 | 72.1 | 45.8 | 75 | 0.61 |
| Comparative example 3 | 77.4 | 64.7 | 46.2 | 79 | 0.58 |
| Comparative example 4 | 70.3 | 59.6 | 45.7 | 80 | 0.57 |
| Embodiment 1 | 78.3 | 76.3 | 45.8 | 75 | 0.61 |
| Embodiment 2 | 78 | 75.6 | 46.2 | 79 | 0.58 |
| Embodiment 3 | 76.4 | 73.7 | 45.7 | 80 | 0.57 |
| Embodiment 4 | 78.3 | 76.3 | 45.8 | 75 | 0.61 |
| Embodiment 5 | 78.0 | 75.6 | 46.2 | 79 | 0.58 |
| Embodiment 6 | 76.8 | 73.7 | 45.7 | 80 | 0.57 |
As shown in table 1 showing, the whiteness significantly of the paper that being applied in fades suppresses processing reduces and has alleviated, and promptly is difficult for fading.In addition, suppress to handle by fading, the whiteness of the MP that embodiment 3,6 this whiteness are low has improved, and suppresses to handle and use the comparative example 4 of identical MP to compare with fading, whiteness is higher, and has reached the close whiteness of comparative example 1 of only using LBKP with not using MP.In addition,, compare with comparative example 1 and reduced density significantly, promptly under the thick identical situation of paper, weigh, realized lighting for low paper owing to having used bulk MP to be easy to increase volume.Though compare with the comparative example 1 that does not use MP, comparative example 2～4 has been realized lighting too, fade significantly.On the other hand, significantly suppress two aspects of fading among the embodiment, realized allocating into MP simultaneously and reached lighting and inhibition two aspects of fading, thereby be suitable for books paper, can use the high MP of productive rate simultaneously, saved resource.
Claims (4)
1, printing, its contain be selected from reductant, oxidant, give at least a kind of compound in the hydrogen organic compound in the presence of, the paper pulp of handling through ultraviolet ray and/or radiation of visible light.
2, printing, its be selected from reductant, oxidant, give at least a kind of compound in the hydrogen organic compound in the presence of, passed through ultraviolet ray and/or visible light radiation and handled.
3, the described printing of claim 1, it contains under use sodium borohydride or hydroboration TBuA or the situation of their mixture as reductant, through the paper pulp of ultraviolet ray and/or radiation of visible light processing.
4, the described printing of claim 2, it uses sodium borohydride or hydroboration TBuA or their mixture as reductant, has passed through ultraviolet ray and/or radiation of visible light and has handled.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2003186737A JP4666450B2 (en) | 2003-06-30 | 2003-06-30 | Printing paper manufacturing method |
| JP186737/2003 | 2003-06-30 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1826447A true CN1826447A (en) | 2006-08-30 |
Family
ID=33549700
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2004800207590A Pending CN1826447A (en) | 2003-06-30 | 2004-06-29 | Printing paper |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US20060237153A1 (en) |
| EP (1) | EP1645687A1 (en) |
| JP (1) | JP4666450B2 (en) |
| CN (1) | CN1826447A (en) |
| CA (1) | CA2541819A1 (en) |
| WO (1) | WO2005001198A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102838900A (en) * | 2012-09-21 | 2012-12-26 | 山西大学 | Aqueous degradable environment-friendly ink and decoloring agent thereof |
| CN114516234A (en) * | 2022-01-04 | 2022-05-20 | 河南印爱文化艺术有限公司 | Antifouling printing method for paper |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8246780B2 (en) | 2005-09-19 | 2012-08-21 | Nalco Company | Methods for enhancing brightness and resistance to thermal yellowing of bleached kraft pulp and paper |
| US7914646B2 (en) * | 2006-07-21 | 2011-03-29 | Nalco Company | Compositions and processes for paper production |
| JP4868907B2 (en) * | 2006-03-27 | 2012-02-01 | 大王製紙株式会社 | Printing paper |
| FI123957B (en) * | 2009-02-20 | 2014-01-15 | Laminating Papers Oy | Process for the preparation of an impregnated marking, a plate coated with the impregnate and the use of the impregnate in a mold for casting concrete |
| US9932709B2 (en) | 2013-03-15 | 2018-04-03 | Ecolab Usa Inc. | Processes and compositions for brightness improvement in paper production |
| JP6297253B2 (en) * | 2012-10-10 | 2018-03-20 | 北越紀州製紙株式会社 | White paperboard |
| WO2018140030A1 (en) | 2017-01-27 | 2018-08-02 | Hewlett-Packard Development Company, L.P. | Printing systems |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4294654A (en) * | 1980-03-21 | 1981-10-13 | International Paper Company | Delignification and bleaching of lignocellulosic pulp via photo-oxygenation |
| JPS59501168A (en) * | 1982-06-24 | 1984-07-05 | スコツト・ペ−パ−・カンパニ− | Ozone bleaching of cellulose materials |
| JPH01229895A (en) * | 1988-03-09 | 1989-09-13 | Kammerer Gmbh | Method for increasing regeneration or stability of whiteness of strip paper and yellowing-resistant support material |
| JP2593392B2 (en) * | 1992-10-20 | 1997-03-26 | 本州製紙株式会社 | Pulp bleaching method |
| US5360515A (en) * | 1993-08-25 | 1994-11-01 | The Research Foundation Of The State University Of New York | Method for reducing thermal and light-induced brightness reversion in lignin-containing pulps |
| JP3787612B2 (en) * | 2000-06-20 | 2006-06-21 | 独立行政法人産業技術総合研究所 | Pulp bleaching method |
| JP3368336B2 (en) * | 2000-06-20 | 2003-01-20 | 独立行政法人産業技術総合研究所 | Pulp bleaching method |
| JP3371228B2 (en) * | 2000-06-20 | 2003-01-27 | 独立行政法人産業技術総合研究所 | Pulp bleaching method |
-
2003
- 2003-06-30 JP JP2003186737A patent/JP4666450B2/en not_active Expired - Lifetime
-
2004
- 2004-06-29 CA CA002541819A patent/CA2541819A1/en not_active Abandoned
- 2004-06-29 WO PCT/JP2004/009143 patent/WO2005001198A1/en active Application Filing
- 2004-06-29 CN CNA2004800207590A patent/CN1826447A/en active Pending
- 2004-06-29 US US10/562,788 patent/US20060237153A1/en not_active Abandoned
- 2004-06-29 EP EP04746612A patent/EP1645687A1/en not_active Withdrawn
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102838900A (en) * | 2012-09-21 | 2012-12-26 | 山西大学 | Aqueous degradable environment-friendly ink and decoloring agent thereof |
| CN114516234A (en) * | 2022-01-04 | 2022-05-20 | 河南印爱文化艺术有限公司 | Antifouling printing method for paper |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2005023438A (en) | 2005-01-27 |
| US20060237153A1 (en) | 2006-10-26 |
| WO2005001198A1 (en) | 2005-01-06 |
| CA2541819A1 (en) | 2005-01-06 |
| EP1645687A1 (en) | 2006-04-12 |
| JP4666450B2 (en) | 2011-04-06 |
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