Global Patent Index - EP 2474412 A2

EP 2474412 A2 20120711 - Improved machine for producing packaging cushions filled with air, or other gas, and method therefore

Title (en)

Improved machine for producing packaging cushions filled with air, or other gas, and method therefore

Title (de)

Vorrichtung und Verfahren für eine verbesserte Herstellung von Luftpolsterelementen

Title (fr)

Procédé et machine améliorés pour fabriquer des coussins d'air scellés

Publication

EP 2474412 A2 20120711 (EN)

Application

EP 11189492 A 20111117

Priority

IT PI20100133 A 20101123

Abstract (en)

A machine (1) for making packaging material in the form of cushions (100) of air, or other gas, comprises feeding rollers (21, 22) arranged to bring a web (10) of thermoplastic material along a longitudinal conveying direction (101). The web (10) comprises two films (10a, 10b) overlapped and can be unwound starting from a roll (20). When starting the machine (1), the web (10) is put on a longitudinal guide (30) arranged downstream of the feeding rollers (21) in the conveying direction of the web (10). The machine (1) comprises a means (50) for heating the web (10), arranged to cause a local melting the thermoplastic material along a longitudinal line (15). More in detail, the heating means (50) comprises at least one heating rod (51, 52), which in use is arranged in contact of the web (10) for causing a local softening to it. The, or each, heating rod (51, 52) comprises an electric resistance (53) coated with an outer layer (54) of a material having a low thermal transmission coefficient, for example less than about 0,5 W/mK such as polytetrafluoroethylene (PTFE), or Teflon.

IPC 8 full level

B31D 5/00 (2006.01)

CPC (source: EP)

B31D 5/0073 (2013.01); B31D 2205/0047 (2013.01); B31D 2205/0082 (2013.01)

Citation (applicant)

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)

EP 2474412 A2 20120711; EP 2474412 A3 20121024; IT 1403360 B1 20131017; IT PI20100133 A1 20120524

DOCDB simple family (application)

EP 11189492 A 20111117; IT PI20100133 A 20101123