EP 0039056 B2 19911023 - METHOD OF AND APPARATUS FOR PRODUCING VACUUM SKIN PACKAGES
Title (en)
METHOD OF AND APPARATUS FOR PRODUCING VACUUM SKIN PACKAGES
Publication
Application
Priority
DE 3015847 A 19800424
Abstract (en)
[origin: EP0039056A1] 1. Process for vacuum-packaging, especially of articles of great height between a thermoplastic upper web (1) and a thermoplastic lower web (2), in which the upper web (1) is heated, the article (5) is inserted between a lower web (2) and the heated upper web (1) and is introduced into a vacuum chamber (9), the lower web (2) being narrower and the upper web (1) being wider than the vacuum chamber (9), with the air being aspirated from the space between the webs (1, 2) through the gap formed by the side edges of the lower web (2) and the lateral inner walls of the vacuum chamber (9) and from the space above the upper web (1) while the lower web is heated (2), and with the upper web (1) being urged against the lower web (2) for areal sealing by means of air pressure, characterized in that the upper web (1) is extended in the direction of the width during heating, and in that the lower web (2) and the upper web (1) are additionally sealed together in their marginal region by mechanical pressure on the order of magnitude of 200 N/cm**2 and by heat and, in that the areal sealing takes place during sealing in the marginal region (20).
IPC 1-7
IPC 8 full level
B65B 9/02 (2006.01); B65B 11/52 (2006.01); B65B 31/02 (2006.01)
CPC (source: EP)
B65B 11/52 (2013.01)
Designated contracting state (EPC)
AT BE CH FR GB IT LI LU NL SE
DOCDB simple family (publication)
EP 0039056 A1 19811104; EP 0039056 B1 19850731; EP 0039056 B2 19911023; AT E14555 T1 19850815; DE 3015847 A1 19811029; DE 3015847 C2 19851107; JP S5737508 A 19820301
DOCDB simple family (application)
EP 81103098 A 19810424; AT 81103098 T 19810424; DE 3015847 A 19800424; JP 6112481 A 19810422