EP 4039457 A1 20220810 - A PRODUCTION METHOD FOR PRODUCING SHIPPING ENVELOPES OF TAMPER-PROOF PLASTIC MATERIAL
Title (en)
A PRODUCTION METHOD FOR PRODUCING SHIPPING ENVELOPES OF TAMPER-PROOF PLASTIC MATERIAL
Title (de)
VERFAHREN ZUR HERSTELLUNG VON VERSANDUMSCHLÄGEN AUS FÄLSCHUNGSSICHEREM KUNSTSTOFF
Title (fr)
PROCÉDÉ DE FABRICATION D'ENVELOPPES D'EXPÉDITION EN MATIÈRE PLASTIQUE INVIOLABLE
Publication
Application
Priority
IT 202100002669 A 20210205
Abstract (en)
The present invention relates to a method for the production of a tamper-proof envelope (100) of heat-weldable material and comprising the phases of:- Feeding at least one tape (N) of heat-weldable material along a processing path and positioning a lower sheet (106) of said heat-weldable material on top of an upper sheet (105) of said heat-weldable material;- Welding (102, 103) for forming the envelope and application of an adhesive strip (105, 106) for creating the tamper-proof closing of the envelope;- wherein, along said processing path, the welding phase is carried out first and, subsequently to said welding phase, the application phase of the adhesive strip is carried out.
IPC 8 full level
B31B 70/00 (2017.01); B31B 70/60 (2017.01); B31B 70/64 (2017.01); B31B 70/81 (2017.01)
CPC (source: EP)
B31B 70/004 (2017.07); B31B 70/61 (2017.07); B31B 70/645 (2017.07); B31B 70/8123 (2017.07)
Citation (search report)
- [XI] GB 2278594 A 19941207 - VENUS FLEXIBLE PACKAGING LIMIT [GB]
- [X] US 3190049 A 19650622 - DER MEULEN LEONARD VAN
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated extension state (EPC)
BA ME
DOCDB simple family (publication)
DOCDB simple family (application)
EP 22155123 A 20220204; IT 202100002669 A 20210205