EP 0432114 A1 19910612 - Bag made of thermoplastic film with annular string.
Title (en)
Bag made of thermoplastic film with annular string.
Title (de)
Beutel aus thermoplastischen Bahnen mit ringförmigen Schnüren.
Title (fr)
Sac de bandes thermoplastiques avec ficelles annulaires.
Publication
Application
Priority
- IT 957989 A 19891206
- IT 1176689 U 19891206
- IT 1176789 U 19891206
Abstract (en)
In production, beginning from continuous film (P), filiform elements (EA,EB) made of weldable material are supplied, in order to form the strings; the transverse welds and cuts of the film are formed so as not to involve in the welding the region of the strings; and after the separation between the bags under production, by means of accelerated sliding with respect to said filiform elements, the filiform elements are welded to one another in pairs and cut in the welding regions in order to form annular strings. <IMAGE>
IPC 1-7
IPC 8 full level
B31B 1/90 (2006.01); B31B 19/90 (2006.01); B65D 33/28 (2006.01)
CPC (source: EP US)
B31B 70/00 (2017.07 - EP); B31B 70/8135 (2017.07 - EP US); B31B 2160/10 (2017.07 - EP)
Citation (search report)
- [Y] US 3058403 A 19621016 - EMANUEL KUGLER
- [X] FR 2291025 A1 19760611 - JANOWSKI VALERY [FR]
- [A] DE 1778734 A1 19720203 - GOTTLIEB WIEDMANN KG MASCHINEN
- [A] US 3283994 A 19661108 - MILLER KEETH B
- [A] US 2777491 A 19570115 - ASHTON GEORGE H, et al
Designated contracting state (EPC)
AT BE DE DK ES FR GB GR NL SE
DOCDB simple family (publication)
DOCDB simple family (application)
EP 90830566 A 19901205; JP 40061190 A 19901206