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B:SECTION B PERFORMING OPERATIONS
 B32: LAYERED PRODUCTS
  B32B: LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
   B32B1/00: Layered products essentially having a general shape other than plane  
   B32B1/02: Receptacles, e.g. tanks  
   B32B1/04: characterised by feature of form at particular places, e.g. in edge regions  
   B32B1/06: characterised by fillings or added members in hollow portions  
   B32B1/08: Tubular products  
   B32B3/00: Layered products essentially comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar form; Layered products essentially having particular features of form  
   B32B3/02: characterised by features of form at particular places, e.g. in edge regions  
   B32B3/04: . . characterised by a layer folded at the edge, e.g. over another layer  
   B32B3/06: . . for securing layers together; for attaching the product to another member, e.g. to a support  
   B32B3/08: . . characterised by added members at particular parts  
   B32B3/10: characterised by a discontinuous layer, i.e. apertured or formed of separate pieces of material  
   B32B3/12: . . characterised by a layer of regularly-arranged cells whether integral or formed individually or by conjunction of separate strips, e.g. honeycomb structure  
   B32B3/14: . . characterised by a face layer formed of separate pieces of material  
   B32B3/16: . . . secured to a flexible backing  
   B32B3/18: . . characterised by an internal layer formed of separate pieces of material  
   B32B3/20: . . . of hollow pieces, e.g. tubes; of pieces with channels or cavities  
   B32B3/22: . . . of spaced pieces  
   B32B3/24: . . characterised by an apertured layer, e.g. of expanded metal  
   B32B3/26: characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids  
   B32B3/28: . . characterised by a layer comprising a deformed thin sheet, e.g. corrugated, crumpled  
   B32B3/30: . . characterised by a layer formed with recesses or projections, e.g. grooved, ribbed  
   B32B5/00: Layered products characterised by the non-homogeneity or physical structure of a layer  
   B32B5/02: characterised by structural features of a layer comprising fibres or filaments  
   B32B5/04: . . characterised by a layer being specifically extensible by reason of its structure or arrangement  
   B32B5/06: . . characterised by a fibrous layer needled to another layer, e.g. of fibres, of paper  
   B32B5/08: . . the fibres or filaments of a layer being specially arranged or being of different substances  
   B32B5/10: . . characterised by a fibrous layer reinforced with filaments  
   B32B5/12: . . characterised by the relative arrangement of fibres or filaments of adjacent layers  
   B32B5/14: characterised by a layer differing constitutionally or physically in different parts, e.g. denser near its faces  
   B32B5/16: characterised by features of a layer formed of particles, e.g. chips, chopped fibres, powder  
   B32B5/18: characterised by features of a layer containing foamed or specifically porous material  
   B32B5/20: . . foamed in situ  
   B32B5/22: characterised by the presence of two or more layers which comprise fibres, filaments, granules, or powder, or are foamed or specifically porous  
   B32B5/24: . . one layer being a fibrous or filamentary layer  
   B32B5/26: . . . another layer also being fibrous or filamentary  
   B32B5/28: . . . impregnated with or embedded in a plastic substance  
   B32B5/30: . . one layer comprising granules or powder  
   B32B5/32: . . both layers being foamed or specifically porous  
   B32B7/00: Layered products characterised by the relation between layers, i.e. products essentially comprising layers having different physical properties or products characterised by the interconnection of layers  
   B32B7/02: in respect of physical properties, e.g. hardness  
   B32B7/04: characterised by the connection of layers  
   B32B7/06: . . permitting easy separation  
   B32B7/08: . . by mechanical connection, e.g. stitching  
   B32B7/10: . . one or both of the layers having adhesive or inter-reactive properties  
   B32B7/12: . . using an adhesive  
   B32B7/14: . . . applied in stripes or other spaced arrangement  
   B32B9/00: Layered products essentially comprising a particular substance not covered by groups   
   B32B9/02: comprising animal or vegetable substances  
   B32B9/04: comprising such substance as the main or only constituent of a layer, next to another layer of a specific substance  
   B32B9/06: . . of paper or cardboard  
   B32B11/00: Layered products essentially comprising bituminous or tarry substances  
   B32B11/02: with fibres or particles embedded in it or bonded with it  
   B32B11/04: comprising such substance as the main or only constituent of a layer, next to another layer of a specific substance  
   B32B11/06: . . of paper or cardboard  
   B32B11/08: . . of metal  
   B32B11/10: next to a fibrous or filamentary layer  
   B32B11/12: next to a particulate layer  
   B32B13/00: Layered products essentially comprising a water-setting substance, e.g. concrete, plaster, asbestos cement, or like builders' material  
   B32B13/02: with fibres or particles embedded in it or bonded with it  
   B32B13/04: comprising such substances as the main or only constituent of a layer, next to another layer of a specific substance  
   B32B13/06: . . of metal  
   B32B13/08: . . of paper or cardboard  
   B32B13/10: . . of wood; of wood particle board  
   B32B13/12: . . of synthetic resin  
   B32B13/14: next to a fibrous or filamentary layer  
   B32B15/00: Layered products essentially comprising metal  
   B32B15/01: all layers being exclusively metallic  
   B32B15/02: in a form other than a sheet, e.g. wire, particles  
   B32B15/04: comprising metal as the main or only constituent of a layer, next to another layer of a specific substance  
   B32B15/06: . . of rubber  
   B32B15/08: . . of synthetic resin  
   B32B15/082: . . . comprising vinyl resins; comprising acrylic resins  
   B32B15/085: . . . comprising polyolefins  
   B32B15/088: . . . comprising polyamides  
   B32B15/09: . . . comprising polyesters  
   B32B15/092: . . . comprising epoxy resins  
   B32B15/095: . . . comprising polyurethanes  
   B32B15/098: . . . comprising condensation resins of aldehydes, e.g. with phenols, ureas or melamines  
   B32B15/10: . . of wood  
   B32B15/12: . . of paper or cardboard  
   B32B15/14: next to a fibrous or filamentary layer  
   B32B15/16: next to a particulate layer  
   B32B15/18: comprising iron or steel  
   B32B15/20: comprising aluminium or copper  
   B32B17/00: Layered products essentially comprising sheet glass, or fibres of glass, slag or the like  
   B32B17/02: in the form of fibres or filaments  
   B32B17/04: . . bonded with or embedded in a plastic substance  
   B32B17/06: comprising glass as the main or only constituent of a layer, next to another layer of a specific substance  
   B32B17/08: . . of cellulosic plastic substance  
   B32B17/10: . . of synthetic resin  
   B32B17/12: next to a fibrous or filamentary layer  
   B32B18/00: Layered products essentially comprising ceramics, e.g. refractory products  
   B32B19/00: Layered products essentially comprising natural mineral fibres or particles, e.g. asbestos, mica  
   B32B19/02: bonded with or embedded in a plastic substance  
   B32B19/04: next to another layer of a specific substance  
   B32B19/06: next to a fibrous or filamentary layer  
   B32B19/08: comprising asbestos  
   B32B21/00: Layered products essentially comprising wood, e.g. wood board, veneer, wood particle board  
   B32B21/02: in the form of fibres, chips, or particles  
   B32B21/04: comprising wood as the main or only constituent of a layer, next to another layer of a specific substance  
   B32B21/06: . . of paper or cardboard  
   B32B21/08: . . of synthetic resin; of fibre-reinforced resin  
   B32B21/10: Next to a fibrous or filamentary layer  
   B32B21/12: next to a particulate layer  
   B32B21/13: all layers being exclusively wood  
   B32B21/14: comprising wood board or veneer  
   B32B23/00: Layered products essentially comprising cellulosic plastic substances  
   B32B23/02: in the form of fibres or filaments  
   B32B23/04: comprising such substance as the main or only constituent of a layer, next to another layer of a specific substance  
   B32B23/06: . . of paper or cardboard  
   B32B23/08: . . of synthetic resin  
   B32B23/10: next to a fibrous or filamentary layer  
   B32B23/12: next to a particulate layer  
   B32B23/14: characterised by containing special compounding ingredients  
   B32B23/16: . . Modifying agents  
   B32B23/18: . . Fillers  
   B32B23/20: comprising esters  
   B32B23/22: comprising ethers  
   B32B25/00: Layered products essentially comprising natural or synthetic rubber  
   B32B25/02: with fibres or particles embedded in it or bonded with it  
   B32B25/04: comprising rubber as the main or only constituent of a layer, next to another layer of a specific substance  
   B32B25/06: . . of paper or cardboard  
   B32B25/08: . . of synthetic resin  
   B32B25/10: next to a fibrous or filamentary layer  
   B32B25/12: comprising natural rubber  
   B32B25/14: comprising copolymers in which synthetic rubber constituents predominate  
   B32B25/16: comprising polydienes or poly-halodienes  
   B32B25/18: comprising butyl or halobutyl rubber  
   B32B25/20: comprising silicone rubber  
   B32B27/00: Layered products essentially comprising synthetic resin  
   B32B27/02: in the form of fibres or filaments  
   B32B27/04: as impregnant, bonding, or embedding substance  
   B32B27/06: as the main or only constituent of a layer next to another layer of a specific substance  
   B32B27/08: . . of synthetic resin of a different kind  
   B32B27/10: . . of paper or cardboard  
   B32B27/12: next to a fibrous or filamentary layer  
   B32B27/14: next to a particulate layer  
   B32B27/16: specially treated, e.g. irradiated  
   B32B27/18: characterised by the use of special additives  
   B32B27/20: . . using fillers, pigments, thixotroping agents  
   B32B27/22: . . using plasticisers  
   B32B27/24: . . using solvents or swelling agents  
   B32B27/26: . . using curing agents  
   B32B27/28: comprising copolymers of synthetic resins not wholly covered by any one of the following subgroups  
   B32B27/30: comprising vinyl resin; comprising acrylic resin  
   B32B27/32: comprising polyolefins  
   B32B27/34: comprising polyamides  
   B32B27/36: comprising polyesters  
   B32B27/38: comprising epoxy resins  
   B32B27/40: comprising polyurethanes  
   B32B27/42: comprising condensation resins of aldehydes, e.g. with phenols, ureas or melamines  
   B32B29/00: Layered products essentially comprising paper or cardboard  
   B32B29/02: next to a fibrous or filamentary layer  
   B32B29/04: next to a particulate layer  
   B32B29/06: specially treated, e.g. surfaced, parchmentised  
   B32B29/08: Corrugated paper or cardboard  
   B32B33/00: Layered products characterised by particular properties or particular surface features, e.g. particular surface coatings; Layered products designed for particular purposes not covered by another single class  
   B32B37/00: Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding  
   B32B37/02: characterised by a sequence of laminating steps, e.g. by adding new layers at consecutive laminating stations  
   B32B37/04: characterised by the partial melting of at least one layer  
   B32B37/06: characterised by the heating method  
   B32B37/08: characterised by the cooling method  
   B32B37/10: characterised by the pressing technique, e.g. using direct action of vacuum or fluid pressure  
   B32B37/12: characterised by using adhesives  
   B32B37/14: characterised by the properties of the layers  
   B32B37/15: . . with at least one layer being manufactured and immediately laminated before reaching its stable state, e.g. in which a layer is extruded and laminated while in semi-molten state  
   B32B37/16: . . with all layers existing as coherent layers before laminating  
   B32B37/18: . . . involving the assembly of discrete sheets or panels only  
   B32B37/20: . . . involving the assembly of continuous webs only  
   B32B37/22: . . . involving the assembly of both discrete and continuous layers  
   B32B37/24: . . with at least one layer not being coherent before laminating, e.g. made up from granular material sprinkled onto a substrate  
   B32B37/26: . . with at least one layer which influences the bonding during the laminating process, e.g. release layers or pressure equalising layers  
   B32B37/28: involving assembly of non-flat intermediate products which are flattened at a later step, e.g. tubes  
   B32B37/30: Partial laminating  
   B32B38/00: Ancillary operations in connection with laminating processes  
   B32B38/04: Punching, slitting or perforating  
   B32B38/06: Embossing  
   B32B38/08: Impregnating  
   B32B38/10: Removing layers, or parts of layers, mechanically or chemically  
   B32B38/12: Deep-drawing  
   B32B38/14: Printing or colouring  
   B32B38/16: Drying; Softening; Cleaning  
   B32B38/18: Handling of layers or the laminate  
   B32B39/00: Layout of apparatus or plants, e.g. modular laminating systems  
   B32B41/00: Arrangements for controlling or monitoring lamination processes; Safety arrangements  
   B32B41/02: Safety arrangements  
   B32B43/00: Operations specially adapted for layered products and not otherwise provided for, e.g. repairing; Apparatus therefor