EP 0571281 A1 19931124 - Pressure sealing apparatus for business forms.
Title (en)
Pressure sealing apparatus for business forms.
Title (de)
Druckverschliessvorrichtung für Briefumschläge.
Title (fr)
Machine de scellement par pression pour articles de correspondance.
Publication
Application
Priority
FR 9206190 A 19920521
Abstract (en)
The invention relates to a pressure sealing apparatus (1) for envelopes and suchlike articles provided with various areas coated with a pressure-sensitive adhesive substance, which apparatus comprises at least a pair of oppositely-rotating pressure elements (4a, 4b) between which there pass at least those areas of the articles which are to be sealed, having been previously applied against each other. This apparatus is distinguished by the fact that the driving of the pressure elements is so arranged that their tangential speeds at the point where they contact the articles are different, with the result that they exert on the said areas to be sealed a combined pressing and rubbing action. At least one (4b) of the elements of the pair of pressure elements is a drive element, while the other (4a) may also be a drive element or may be driven by the pressure of contact, in which case a braking system is provided. <IMAGE>
IPC 1-7
IPC 8 full level
B43M 5/04 (2006.01)
CPC (source: EP)
B43M 5/047 (2013.01)
Citation (search report)
- [A] FR 1503822 A 19671201
- [A] EP 0421565 A2 19910410 - MOORE BUSINESS FORMS INC [US]
Designated contracting state (EPC)
AT BE CH DE DK ES FR GB GR IE IT LI LU NL PT SE
DOCDB simple family (publication)
EP 0571281 A1 19931124; EP 0571281 B1 19960403; AT E136261 T1 19960415; DE 69302043 D1 19960509; DE 69302043 T2 19960829; ES 2085122 T3 19960516; FR 2691408 A1 19931126; FR 2691408 B1 19940701
DOCDB simple family (application)
EP 93401287 A 19930518; AT 93401287 T 19930518; DE 69302043 T 19930518; ES 93401287 T 19930518; FR 9206190 A 19920521