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Class Number: 162 Class Title: PAPER MAKING AND FIBER LIBERATION Subclass Subclass Number Title 1 PROCESSES OF CHEMICAL LIBERATION, RECOVERY OR PURIFICATION OF NATURAL CELLULOSE OR FIBROUS MATERIAL 2 .Animal fibers 3 .Mineral fibers 4 .Waste paper or textile waste 5 ..With organic agent 6 ..With chlorine, chlorine compounds, oxygen, ozone, or per-compounds 7 ..With sulfur or sulfur compound 8 ..With alkali metal, alkaline earth metal, or ammonium compound 9 .With chemical or physical modification of liberated fiber 10 .With non-fiber material added to product 11 ..Fiber supplied constituent 12 ..Added to web or article 13 .With formation of web or article 14 .Including recovery of organic by-product 15 ..From digester relief gases 16 ..From waste liquor 17 .Continuous chemical treatment or continuous charging or discharging 18 ..With compression, squeezing or compacting of fibrous material during charging 19 ..Plural diverse stage treatment 20 .With decortication or mechanical preparation of textile fibers 21 .Defibration by projection or explosion 22 ..With chemical other than water or steam 23 .Mechanical defibration in the presence of heated gas or gas under pressure 24 .Chemical treatment after start or completion of mechanical defibration 25 ..With additional chemical treatment before start of defibration 26 .Simultaneous mechanical defibration and chemical treatment 27 .Mechanical defibration of logs or blocks after chemical treatment 28 .With plural or specified mechanical defibering step 29 .With regeneration, reclamation, reuse, recycling or destruction of digestion fluid 30.1 ..With destruction of organic ingredient in or smelting of liquor 30.11 ...Treatment of kraft pulping chemicals 31 ...Flames combustion 32 ...Liquor from digestion using organic compound or including element other than Na, Ca, Mg, O, C, H or S 33 ...With mixing of liquors from different digestions 34 ...Plural diverse digestion of same fibrous material 35 ...Residue converted into liquor different from original liquor 36 ...Sulfur dioxide or sulfite containing spent liquor 37 ..Digestion fluid reused on different fibrous materials 38 ...With addition of chemicals prior to reuse 39 ....In digester 40 ...Without treatment or modificationn 41 ..Recirculation (includes separation from fibers) 42 ...With treatment of fluids during recirculation 43 ....Removal and/or separation of portion of recirculating fluid 44 .....With recombing 45 ....With addition of chemicals to recirculating fluid 46 ...Steam only 47 .With heat recovery 48 .With cleaning, preserving or conditioning of apparatus 49 .With testing, sampling or analyzing 50 .Utilizing electrical or radiant energy 51 .Digestion odor control 52 .Charging and/or discharging fibrous material 53 .Vacuum treatment 54 .Freezing 55 .With classifying, separating or screening of pulp (solids from solids) 56 .With squeezing, compression, rubbing, kneading 57 .With agitation or forced circulation 58 ..In rotating vessel 59 ..Closed circuit circulation 60 .With washing 61 .Regulatory 62 ..Concentration of chemicals 63 .Gas, vapor or mist contact 64 ..Sulfur dioxide 65 ..Oxygen, ozone or air 66 ..Chlorine containing material 67 ...Chlorine dioxide 68 ..Steam only 69 .Non-continuous liquid phase 70 .Treatment with particular chemical 71 ..Treatment of ground-wood or sawdust 72 ..Organic 73 ...With inorganic chlorine containing material 74 ...Chlorine containing 75 ...Fat, fatty oil or higher fatty acid 76 ...Acids, salts or esters 77 ...Alcohols or phenols 78 ..Per-compound (e.g., peroxide, perborate) 79 ..Heavy metal or aluminum containing 80 ..Phosphorus, boron or silicon containing 81 ..Nitrogen oxide, acid, or salt thereof 82 ..Sulfur containing 83 ...Sulfur dioxide or sulfite 84 ....Plural diverse stage treatment 85 .....Chlorine containing material in at least one stage 86 .....Alkali metal, ammonium, alkaline earth metal or magnesium hydroxide or carbonate in at least one stage 87 ..Chlorine containing 88 ...Plural diverse stage treatments 89 ....Alkali metal, ammoninum, alkaline earth metal or magnesium hydroxide or carbonate in at least one stage 90 ..Alkali metal, ammonium, alkaline earth metal or magnesium hydroxide or carbonate 91 .Particular raw cellulosic materials 92 ..Fossilized, (e.g., peat) 93 ..Bark 94 ..Bambooo 95 ..Cotton fibers or linters 96 ..Sugar cane, bagasse or cornstalks 97 ..Cereal grasses or straws 98 ..Bast (e.g., flax, hemp, jute, ramie, sisal) 99 ..Non-wood 100 PROCESSES AND PRODUCTS 101 .Pore forming in situ (e.g., gas generation) 102 .Utilizing non-aqueous suspending medium 103 .Including solid non-waterlaid preform 104 ..Between separately formed webs 105 ..Metallic 106 ...Electrical conductor 107 ..Glass 108 ..Woven fabric or parallel strands 109 .Non-uniform, irregular or configured web or sheet 110 ..Watermarking 111 ..Creping and/or crinkling 112 ...With coating and/or laminating 113 ...With additional deformation 114 ..By perforating 115 ..By fluid pressure 116 ..By configured forming mold 117 ..Subsequent treatment by irregular or configured die 118 .With winding or roll forming 119 ..With coating 120 ..With cutting and/or removing material 121 ..With heat 122 ..With pressure 123 .Multi-layer waterlaid webs or sheets 124 ..With non-fiber added between layers 125 ..Layers of different properties 126 ...Color 127 ...Organic additive 128 ...Inorganic additive 129 ...Fiber 130 ....Dimension 131 ....Orientation 132 ..Separately formed webs subsequently united 133 ...On common felt or carries (non-mold) 134 .With printing and/or variegated coloring 135 .With coating after drying 136 ..With treatment subsequent to coating 137 ..Plural layer coating 138 .Electrical or magnetic product characteristic 139 .Cigarette paper 140 .Safety, identification and fraud preventing paper 141 .Plural fiber containing 142 ..Undigested cellulosic fiber 143 ..Animal or proteinaceous 144 ...Leather 145 ..Mineral 146 ..Synthetic (including chemically modified cellulose) 147 ..Waste paper or textile waste 148 ..Non-wood 149 ..Fibers of different dimensions 150 .Undigested cellulosic fiber 151 .Animal or proteinaceous fiber 152 .Mineral fiberr 153 ..Asbestos 154 ...With Portland cement 155 ...With organic additive 156 ..Glass 157.1 .Synthetic fiber (including chemically modified cellulose) 157.2 ..Synthetic resin 157.3 ...Polyamide, polyester or polyurethane 157.4 ...Polymerized unsaturated compound 157.5 ....Hydrocarbon or halohydrocarbon 157.6 ..Cellulosic 157.7 ...Regenerated cellulose, viscose or rayon 158 .Non-fiber additive 159 ..Fire proofing agent 160 ..Preservative or antioxidant 161 ...Biocidal 162 ..Coloring agent 163 ..Fiber supplied constituent 164.1 ..Synthetic resin 164.2 ...Ion exchange resin or molecular sieve 164.3 ...Epoxy containing reactant 164.4 ...Silicon containing 164.5 ...Sulfur containing 164.6 ...Nitrogen containing 164.7 ...Ester type 165 ...Phenol-aldehyde 166 ...Amine- or amide-aldehyde 167 ....With additional organic reactant 168.1 ...Polymerized unsaturated compound 168.2 ....Nitrogen containing compound 168.3 .....Acrylamide containing 168.4 ......Heterocyclic N or S or epoxy component 168.5 .....Heterocyclic N or S or epoxy component 168.6 ....Hetero S or epoxy component 168.7 ....Ester type 169 ....From polyene compound 170 ..Natural hydrocarbon gum (rubber) 171 ..Bitumen 172 ..Wax 173 ..Hydrocarbon 174 ..Protein 175 ..Carbohydrate 176 ...Cellulose (non-fibrous) 177 ...Cellulose derivative (e.g., cellulose ester) 178 ...Gum 179 ..Fat, fatty oil, or higher fatty acid 180 ..Natural resin 181.1 ..Inorganic 181.2 ...Metal salt other than silicate 181.3 ....Sulfate or sulfite 181.4 ...Metal oxide or hydroxide 181.5 ....Metal other than alkali metal, magnesium, or alkaline earth metal 181.6 ...Silicon containing additive other than clay 181.7 ....Alkali metal silicate 181.8 ...Clay 181.9 ...Free metal or free carbon containing 182 ..With preparatory chemical treatment of fiber 183 ..Incorporation proceduress 184 ...Application to formed web 185 ....Part added to furnish or pulp 186 ....On mold 187 .Hydration and/or gelatinization 188 .Non-uniform internal structure 189 .Reclamation, salvage or reuse of materials 190 ..White water 191 ..Broke or trim 192 .Utilizing electrical or wave energy 193 .Lead strip forming and/or guiding 194 .With cutting and/or slitting 195 ..Fluid deckle or shower 196 .With folding or twisting (e.g., roving) 197 .With stretching, tensioning, decurling, flexing or breaking 198 .With measuring, inspecting and/or testing 199 .Conditioning, preparing or repairing of apparatus 200 ..Wire stringing 201 .Combined processes 202 .Running or indefinite length work forming and/or treating processes (e.g., web) 203 ..Forming single web between opposed forming surfaces 204 ..Subsequent treatment of formed web 205 ...Pressure 206 ....With heating and/or cooling 207 ...Heating, cooling, gas or vapor contact 208 ..Treatment of slurry on mold surface 209 ...Vibration or agitation 210 ...Pressure member 211 ..Inhibiting or restricting drainage through mold 212 ..Directing slurry into association with mold 213 ...Projecting or slinging stock 214 ...Pressure forming 215 ...Counter or transverse of mold movement 216 ...Mechanical treatment of slurry in head box or approach flow 217 ..Suction through mold 218 .Article forming processes (pulp molding) 219 ..Plural stage deposition 220 ..Pressing with flexible diaphragm 221 ..Treatment subsequent to removal from forming mold 222 ...Surface treatment 223 ...Reshaping (i.e., changing configuration) 224 ...Heat and/or mechanical pressure 225 ....Boards or sheets 226 ..Applying heat to work on forming mold 227 ..Applying mechanical pressure to work on forming mold 228 ..Accretion from bulk 229 ...Vibration of mold and/or slurry 230 ..Separation from mold or core 231 .Articles 232 APPARATUS 233 .Digester 234 ..With mechanical defibering means 235 ...Concurrent 236 ....Continuous 237 ..Continuous 238 ..Automatic control 239 ..With recovery means 240 ...With incinerator or evaporatorr 241 ..Plural 242 ..Combined 243 ..With pulp agitating or circulating means 244 ...Rotating digester 245 ..Removable basket or retaining means 246 ..Charging and/or discharging means (including blow pits) 247 ...Target, impact, explosion 248 ..Forced circulation or percolation of fluid only 249 ...With heating 250 ..Heating means 251 ..Strainers 252 .Automatic control 253 ..Of plural operations 254 ..Of stock working device 255 ..Of lead strip former and/or break sensing 256 ..Of mold movement 257 ...Transverse movement of wire 258 ..Of stock consistency 259 ..Of stock feed to forming device 260 ..Of product cutting device 261 .With beating, refining, and/or disintegrating means 262 .Electric controls or systems 263 .Measuring, testing, inspecting, indicating or illuminating 264 .White water or broke recovery, recirculation or treatment 265 .With coating or impregnating means (including printing) 266 ..Acting on product on mold 267 .Molding pulp and non-pulp insert or preform 268 ..Running or indefinite length work 269 .With product stacking or piling means 270 .Flexing, bending, straightening or decurling means 271 ..Sheet or web 272 .Apparatus repair, cleaning or conditioning 273 ..Wire changing and/or tensioning 274 ..Of porous or foraminous member (e.g., felt or mold) 275 ...Means applying fluid 276 ....To cylinder 277 ....Reciprocating 278 .....With suction means 279 ....And suction means 280 .Web creping or crinkling type 281 ..Cylinder and doctor 282 ...Circumferentially grooved cylinder 283 .With product winding or reeling means 284 ..Tube winding type 285 ...With tube cutting or slitting means 286 .With cutting, scoring, perforating or tearing 287 .With folding, rolling or twisting means 288 .Molding and burnishing means 289 .Running or indefinite length product forming and/or treating means 290 ..Molding and heat exchange means 291 ..Moving impermeable member applying stock to mold 292 ..Means flinging or projecting stock against mold 293 ..Product slides relative to molding surface (e.g., extrusion molding) 294 ..Mold intermittently moving relative to supply 295 ..Concave molding surface in longitudinal or transverse section 296 ..Irregular or configured molding surface (e.g., corrugated)) 297 ..Pneumatic pressure or vacuum means acting directly on stock on mold surface 298 ..Plural separate streams of stock applied to mold 299 ...Longitudinally spaced points of application 300 ..Plural molds or plural spaced areas of application on a single mold 301 ...Common vat or stock feed 302 ....Tangent cylinder molds 303 ...Molds converge to unit web 304 ...Webs united on common carrier (e.g., felt) 305 ..Molds with subsequent separate pressing means 306 ..Means removing web product from molding surface 307 ...Blow off acting through mold 308 ..Means treating stock on molding surface 309 ...Irregular treating member or acting non-uniformly across web product 310 ....Fluid jet or suction means (e.g., shower deckle) 311 ...Submerged in supply 312 ...Solid treating member 313 ....Moving 314 .....Rotary 315 ..Means directing stock into contact with molding surface 316 ...On to under surface only of mold 317 ...Confined stock stream on forming surface (e.g., pressure forming) 318 ...Cylinder mold with endless forming belt about 319 ....Superposed or lateral stock pool 320 ...Superposed or lateral stock pool type 321 ....Cylinder mold 322 ...With diverse non-pulp material inlet 323 ...Immersion vat type (e.g., cylinder machine vat) 324 ....Stock flow direction reversing means 325 ....Stock directed transversely of mold direction 326 ....Stock applied at plural points on mold periphery 327 ....Baffles diverting or directing flow against cylinder mold 328 .....Concentric with cylinder 329 ......Adjustable to or from cylinder 330 ....Fluid level control 331 ....Side seals 332 ....Mold hanging 333 .....Centerless 334 ....Mask, deckle or apron 335 ....With drain or suction means, for white water 336 ...Flow box, slice, and/or approach flow 337 ....Recirculation skimming or excess stock take-off 338 ....Transversely crossing inlet into flow box 339 ....Closed to atmosphere 340 .....Air cushion at above atmospheric pressure 341 ....Vibratile or moving member treating stock 342 .....Immersed rotary member (e.g., rectifier roll) 343 ....With vanes or pulp stream dividing means 344 ....Slice 345 .....Plural, longitudinally spaced 346 .....Width adjustment 347 .....Flexible or pivoted 348 ..Flexible endless band type mold (e.g., Fourdrinier) 349 ...Concurrently moving back up 350 ...Variable slopee 351 ...Means retarding or controlling drainage through mold 352 ....Wire bottom scrappers or deflectors 353 ...Mask, deckle, or apron 354 ...Table structure 355 ....Vibrating or shaking (e.g., shake frames) 356 .....Perpendicular to plane of wire 357 ..Cylinder molds, per se 358.1 ..Press and felt 358.2 ...With felt structure or felt composition 358.3 ...Extended nip press 358.4 ....With impermeable belt structure or impermeable belt composition 358.5 ....With heating means 359.1 ...With separate heated drying means 360.2 ...Plural sequential presses 360.3 ....Having three or more coacting rolls (e.g., compact press, etc.) 361 ..Solid means acting on formed web 362 ...Marking or embossing 363 ..Suction devices 364 ...Systems 365 ...Reciprocating 366 ...Adjustable width 367 ...Traveling suction face 368 ....Rotary pervious cylinder 369 .....With non-rotating internal suction box 370 ......Plural suction areas 371 ......Box carried seals 372 .....Shell structure 373 ...Roller face (suction not through rollers) 374 ...Wear face structures and materials 375 .With heat exchange means 376 ..Heated foraminous forming mold 377 ..Heated die 378 ...Contacting work on forming mold 379 ....Plural successive heated dies 380 .Slurry supply conditioning or condition maintaining 381 .Combined 382 .Foraminous forming mold for discrete articles (pulp molding) 383 ..Differing areas of porosity or of suction on single mold surface (including masking) 384 ..Centrifugal 385 ..With moving slurry supply container 386 ..With handle or hand grip 387 ..Accretion from bulk (i.e., immersed mold) 388 ...Means moving mold through, into or out of slurry 389 ....Relatively moving or separate mold and suction backup 390 ....Plural and/or compartmented slurry container 391 ....Rotary or swinging carrier 392 .....With compressor 393 ....Reciprocating carrier 394 .....With compressor 395 ....With compressor 396 ..Press felting (i.e., pressure member acting on pulp on mold) 397 ...Plural molds (cavities) 398 ....Plate or sheet type (i.e., opposed flat platens) 399 ...Plate or sheet type 400 ....With cores (e.g., molding of apertured plates)) 401 ...Flexible diaphragm 402 ....About foraminous core 403 ...Contracting matrix 404 ....About foraminous core 405 ...Expanding and/or contracting core 406 ...About foraminous core 407 ..Mold charging means 408 ...Pressure charging 409 ...Plural discrete areas of mold 410 ..Article ejecting 411 ..Dipping molds, per se 415 .Compressor 416 ..Configured die (non-planar) * ****************************** * CROSS-REFERENCE ART COLLECTIONS * ****************************** 900 PAPERMAKING PRESS FELTS 901 IMPERMEABLE BELTS FOR EXTENDED NIP PRESS 902 WOVEN FABRIC FOR PAPERMAKING DRIER SECTION 903 PAPER FORMING MEMBER (E.G., FOURDRINIER, SHEET FORMING MEMBER, ETC.) 904 WITH SPECIFIED SEAM STRUCTURE OF PAPERMAKING BELT * ****************************** * DIGESTS * ****************************** DIG 2 Chip soaking DIG 3 Wetting agent DIG 4 Pitch control DIG 5 Alpha cellulose DIG 6 Moisture and basic weight DIG 7 Water collectors (e.g., save-alls) DIG 8 Chlorine-containing liquid regeneration DIG 9 Uses for paper making sludge DIG 10 .Computer control of paper making variables DIG 11 ..Wet end paper making variables DIG 12 Seasoning