Knowledge

Wet strength

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can be used to reduce the strength loss of the paper upon wetting. To improve the wet strength it is common to use chemicals. The use of chemicals can retain as much as 10% to 30% of the original dry strength of the paper. The wet strength chemicals may improve the dry strength of the paper as well.
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Hung, Duong Van; Nakano, Yusuke; Tanaka, Fumihiko; Hamanaka, Daisuke; Uchino, Toshitaka (30 November 2010). "Preserving the strength of corrugated cardboard under high humidity condition using nano-sized mists".
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A Japanese research team found that the effect of humidity on cardboard differs depending on how it is dispersed. Ultrasonic mist reduces the wet strength of cardboard more so than nano-mist.
63:. These are dependent on physical contact between the fibres and can be broken by wetting of the fibres. The residual strength of a wetted paper can be less than 10% of the original strength. 28:
is a measure of how well the web of fibers holding the paper together can resist a force of rupture when the paper is wet. Wet strength is routinely expressed as the ratio of wet to dry
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of wet strengthened paper requires higher intensity reworking conditions in the re-pulping process to break the fibre web. Some wet strength papers are not considered recyclable.
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Wet strength chemicals improve the tensile properties of the paper both in wet and dry state by crosslinking the
449: 900: 551: 847: 768: 43:, wet strength also includes the ability to stay intact under humid or wet conditions. Wet strength 127: 379: 514: 218:. Papermaking Science and Technology. Vol. 4. Helsinki, Finland: Fapet OY. pp. 289–301. 961: 895: 852: 1089: 875: 168: 794: 519: 404: 36: 905: 1110: 663: 8: 998: 824: 278: 658: 504: 253: 1026: 571: 414: 305: 219: 108: 1051: 910: 748: 556: 526: 319: 249: 29: 1061: 945: 930: 885: 804: 758: 728: 668: 653: 494: 434: 384: 332: 327: 178: 139: 1079: 1036: 723: 688: 464: 439: 374: 271: 189: 112: 97: 60: 536: 1104: 925: 915: 832: 718: 708: 678: 643: 606: 541: 509: 474: 71: 1041: 940: 814: 713: 623: 596: 591: 586: 531: 499: 479: 454: 163: 158: 143: 93: 67: 1056: 1021: 1016: 935: 698: 683: 628: 618: 601: 581: 566: 459: 409: 309: 546: 993: 920: 842: 799: 773: 763: 693: 673: 648: 613: 576: 489: 469: 40: 25: 1031: 789: 753: 733: 703: 638: 633: 484: 173: 56: 1046: 890: 880: 837: 561: 44: 809: 354: 348: 104: 87: 743: 738: 444: 294: 21: 263: 238: 154:
A wide range of paper materials are wet strengthened:
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Wet strength development should not be confused with
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a polymer onto a paper or paperboard. Laminating a
1102: 184: 279: 59:fibreweb of paper is mainly held together by 146:is also a method of providing wet strength. 66:Various techniques, such as refining of the 341: 286: 272: 138:Sometimes wet strength can be obtained by 81: 1103: 267: 213: 209: 207: 205: 1085: 13: 202: 14: 1122: 254:10.1016/j.compscitech.2010.08.011 242:Composites Science and Technology 1084: 1075: 1074: 100:that do not break upon wetting. 149: 232: 214:Neimo, Leo, ed. (1999). "13". 1: 901:Environmental impact of paper 195: 185:Environmental considerations 50: 35:With combined board such as 7: 133: 10: 1127: 848:Surface chemistry of paper 351:(Zuo Bo/Tso Po/Tso TzÇ”-yi) 122:Neutral sizing agents are 85: 1070: 1009: 954: 866: 823: 782: 427: 397: 367: 318: 301: 293: 128:alkenylsuccinic anhydride 117:polyamide-epichlorohydrin 380:Friedrich Gottlob Keller 70:and wet pressing on the 896:Elemental chlorine free 853:Units of paper quantity 876:Bleaching of wood pulp 169:Liquid packaging board 82:Wet strength chemicals 795:Corrugated fiberboard 552:Electrical insulation 405:Thomas Francis Carter 216:Papermaking Chemistry 113:melamine-formaldehyde 37:corrugated fiberboard 47:are often needed. 124:alkylketene dimers 1098: 1097: 423: 422: 415:Tsien Tsuen-hsuin 393: 392: 363: 362: 306:Paper engineering 248:(40): 2123–2127. 109:urea-formaldehyde 1118: 1088: 1087: 1078: 1077: 1062:Beverage cartons 1052:Watercolor paper 911:Hollander beater 395: 394: 365: 364: 339: 338: 288: 281: 274: 265: 264: 258: 257: 236: 230: 229: 211: 94:cellulose fibres 1126: 1125: 1121: 1120: 1119: 1117: 1116: 1115: 1101: 1100: 1099: 1094: 1066: 1005: 950: 946:Sulfite process 931:Paper recycling 886:Conical refiner 868: 862: 819: 805:Paper chemicals 778: 419: 389: 385:Charles Fenerty 359: 337: 333:Missal of Silos 328:Battle of Talas 314: 297: 292: 262: 261: 237: 233: 226: 212: 203: 198: 187: 179:Paper chemicals 152: 140:curtain coating 136: 90: 84: 53: 12: 11: 5: 1124: 1114: 1113: 1096: 1095: 1093: 1092: 1082: 1071: 1068: 1067: 1065: 1064: 1059: 1054: 1049: 1044: 1039: 1034: 1029: 1024: 1019: 1013: 1011: 1007: 1006: 1004: 1003: 1002: 1001: 991: 990: 989: 984: 979: 974: 969: 962:Paper industry 958: 956: 952: 951: 949: 948: 943: 938: 933: 928: 923: 918: 913: 908: 906:Handmade paper 903: 898: 893: 888: 883: 878: 872: 870: 864: 863: 861: 860: 855: 850: 845: 840: 835: 829: 827: 825:Specifications 821: 820: 818: 817: 812: 807: 802: 797: 792: 786: 784: 780: 779: 777: 776: 771: 766: 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987:United States 985: 983: 980: 978: 975: 973: 970: 968: 965: 964: 963: 960: 959: 957: 953: 947: 944: 942: 939: 937: 934: 932: 929: 927: 926:Paper machine 924: 922: 919: 917: 916:Kraft process 914: 912: 909: 907: 904: 902: 899: 897: 894: 892: 889: 887: 884: 882: 879: 877: 874: 873: 871: 865: 859: 856: 854: 851: 849: 846: 844: 841: 839: 836: 834: 831: 830: 828: 826: 822: 816: 813: 811: 808: 806: 803: 801: 798: 796: 793: 791: 788: 787: 785: 781: 775: 772: 770: 767: 765: 762: 760: 757: 755: 752: 750: 747: 745: 742: 740: 737: 735: 732: 730: 727: 725: 722: 720: 717: 715: 712: 710: 707: 705: 702: 700: 697: 695: 692: 690: 687: 685: 682: 680: 677: 675: 672: 670: 667: 665: 662: 660: 657: 655: 652: 650: 647: 645: 642: 640: 637: 635: 632: 630: 627: 625: 622: 620: 617: 615: 612: 608: 605: 604: 603: 600: 598: 595: 593: 590: 588: 585: 583: 580: 578: 575: 573: 570: 568: 565: 563: 560: 558: 555: 553: 550: 548: 545: 543: 540: 538: 535: 533: 530: 528: 525: 521: 518: 517: 516: 513: 511: 508: 506: 503: 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15: 1111:Papermaking 1057:Paper money 1017:Lined paper 936:Papermaking 869:and process 867:Manufacture 843:Paper sizes 572:Greaseproof 557:GenkĹŤ yĹŤshi 410:Dard Hunter 342:Originators 310:Papermaking 41:laminations 994:Paper mill 921:Organosolv 800:Fiber crop 790:China clay 749:Waterproof 649:Paperboard 527:Correction 520:Carbonless 368:Developers 196:References 126:(AKD) and 86:See also: 26:paperboard 1047:Notebooks 1032:Cardboard 815:Wood pulp 783:Materials 759:Wood-free 734:Wallpaper 729:Tree-free 669:Red rosin 654:Parchment 639:Onionskin 634:Newsprint 495:Cartridge 490:Cardstock 485:Cardboard 435:Acid-free 190:Recycling 174:Paper bag 115:(MF) and 57:cellulose 51:Mechanism 45:adhesives 1105:Category 1080:Category 1037:Clothing 955:Industry 891:Deinking 881:Calender 838:Grammage 724:Transfer 689:Security 562:Glassine 465:Blotting 440:Air-laid 398:Scholars 134:Coatings 119:(PAE). 39:or with 1090:Commons 1042:Tissues 833:Density 810:Papyrus 769:Writing 719:Tracing 709:Thermal 684:Scritta 679:Rolling 644:Origami 607:Butcher 542:Display 510:Contact 475:Bristol 450:Asphalt 355:Damjing 349:Cai Lun 320:History 130:(ASA). 972:Europe 967:Canada 714:Tissue 624:Manila 597:Korean 592:Ingres 587:Inkjet 500:Coated 480:Carbon 455:Banana 222:  111:(UF), 105:sizing 88:Sizing 982:Japan 977:India 744:Wasli 739:Washi 699:Stone 629:Mummy 619:Lokta 602:Kraft 582:India 567:Graph 537:CrĂŞpe 460:Bible 445:Amate 428:Types 295:Paper 96:with 22:paper 1010:Uses 999:List 774:Xuan 764:Wove 694:Seed 674:Rice 614:Laid 577:Hemp 515:Copy 470:Bond 220:ISBN 68:pulp 55:The 24:and 16:The 754:Wax 704:Tar 250:doi 20:of 1107:: 547:DĂł 308:/ 246:70 244:. 204:^ 287:e 280:t 273:v 256:. 252:: 228:.

Index

paper
paperboard
tensile force
corrugated fiberboard
laminations
adhesives
cellulose
hydrogen bonds
pulp
paper machine
Sizing
cellulose fibres
covalent bonds
sizing
urea-formaldehyde
melamine-formaldehyde
polyamide-epichlorohydrin
alkylketene dimers
alkenylsuccinic anhydride
curtain coating
plastic film
Tissue paper
Filter paper
Liquid packaging board
Paper bag
Paper chemicals
Recycling


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