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CPC Definition - Subclass B31F

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Last Updated Version: 2022.08
B31F
MECHANICAL WORKING OR DEFORMATION OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER (making layered products not composed wholly of paper or cardboard B32B)
References
Limiting references

This place does not cover:

Making layered products not composed wholly of paper or cardboard

B32B

References out of a residual place

Examples of places in relation to which this place is residual:

Making boxes, cartons, envelopes or bags

B31B

Making wound paper articles

B31C

Making other paper articles

B31D

Informative references

Attention is drawn to the following places, which may be of interest for search:

Cutting, trimming, in general

B26

Incising, scoring, in general

B26D 3/08

Multi-ply material of paper or cardboard, manufacture thereof

D21H

Mechanical deformation without removing material, e.g. in combination with laminating
References
Application-oriented references

Examples of places where the subject matter of this place is covered when specially adapted, used for a particular purpose, or incorporated in a larger system:

Producing decorative effects by processes for stamping ornamental designs on surfaces

B44C 1/24

Informative references

Attention is drawn to the following places, which may be of interest for search:

Folding thin material

B65H 45/00

Mechanical deformation during paper or cardboard making

D21F, D21G

{Shaping of tube ends, e.g. flanging, belling, closing, rim-rolling or corrugating; Fixing elements to tube ends}
References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Making cylindrical boxes with separate bottoms

B31B 2110/20

{Lining or sheathing (folding the edge of the sheathing B31F 1/0016, B31F 1/0029)}
References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Making lined boxes

B31B 2120/40, B31B 2105/00

Embossing {, i.e. producing impressions formed by locally deep-drawing, e.g. using rolls provided with complementary profiles} ({B31F 1/128 takes precedence;} corrugating B31F 1/20; embossing in combination with printing B41F 19/02, B41M 1/24; typewriters for embossing B41J 3/38; stamping in combination with deforming B41K 3/36)
References
Application-oriented references

Examples of places where the subject matter of this place is covered when specially adapted, used for a particular purpose, or incorporated in a larger system:

Machines or apparatus for embossing decorations or marks

B44B 5/00

Artists hand tools for embossing

B44B 11/04

Special rules of classification

Classification in deep indexing scheme B31F 2201/07 is mandatory.

Creasing (corrugating B31F 1/20; zig-zag folding B65H 45/20 {; combined with folding B31F 1/0012, B31F 1/0022; grooving by cutting B26D 3/06, B26D 3/08; by milling grooves B23C 3/30; of plastics material B29C 53/06})
References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Making creases during box or bag making

B31B 50/25, B31B 70/25

Crêping
References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Paper making

D21F 11/00

Corrugating; Corrugating combined with laminating to other layers
References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Corrugating sheet metal

B21D 13/00

Corrugating veneer

B27D

Corrugating plastics material

B29C 53/22

Zig-Zag folders

B65H 45/20, B65H 45/228

{Making corrugated cardboard of composite structure, e.g. comprising two or more corrugated layers}
References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Making cellular structures by cutting corrugated webs longitudinally into strips, piling these strips and uniting them

B31D 3/007

Laminated products characterised by a layer comprising a deformed thin sheet , e.g. corrugated, crumpled

B32B 3/28

Moistening and heating webs to facilitate mechanical deformation and drying deformed webs {(during corrugating B31F 1/28)}
Definition statement

This place covers:

E.g. impregnating.

References
Limiting references

This place does not cover:

Moistening, drying during making of corrugated web having transverse corrugations

B31F 1/2845

Attaching together sheets, strips or webs; Reinforcing edges
References
Application-oriented references

Examples of places where the subject matter of this place is covered when specially adapted, used for a particular purpose, or incorporated in a larger system:

Stapling in making boxes, bags or the like

B31B, B31B 50/68, B31B 70/68

Attaching the replacement web to the expiring web during web-roll changing

B65H 19/18

Apparatus for splicing webs during handling

B65H 21/00

Informative references

Attention is drawn to the following places, which may be of interest for search:

Means for applying adhesive or glue

B05C

Making layered products

B32B 37/00

Splicing webs

B65H 21/00

Processes not otherwise provided for
Definition statement

This place covers:

Processes for working paper not provided for in B31B 50/00, B31B 70/00, B31C 1/00 - B31C 99/00, B31D 1/00 - B31D 5/00, B31F 1/00 - B31F 5/00.