US 11,945,618 B2
Sealing machine and a method for sealing a sealing material
Carles Colomer, Blanes (ES); Gerard Maltas, Barcelona (ES); and Carles Verdugo, Mataro Barcelona (ES)
Assigned to Multivac Sepp Haggenmueller SE & Co. KG, Wolfertschwenden (DE)
Filed by MULTIVAC SEPP HAGGENMUELLER SE & CO. KG, Wolfertschwenden (DE)
Filed on Oct. 14, 2022, as Appl. No. 17/966,656.
Claims priority of application No. 21382928 (EP), filed on Oct. 15, 2021.
Prior Publication US 2023/0120336 A1, Apr. 20, 2023
Int. Cl. B65B 51/16 (2006.01); B65B 9/20 (2012.01); B65B 51/26 (2006.01); B65B 51/10 (2006.01)
CPC B65B 51/16 (2013.01) [B65B 9/2021 (2013.01); B65B 9/2028 (2013.01); B65B 51/26 (2013.01); B65B 2051/105 (2013.01); B65B 2220/08 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A sealing machine for sealing a sealing material by heating a fin of the sealing material wrapped around a product, the sealing machine comprising, in a transport direction of the sealing material, a pair of tracking rollers for tensioning the sealing material and a pair of heating rollers for sealing the sealing material by applying heat to the fin when the fin is moved between the pair of heating rollers, wherein the pair of tracking rollers and the pair of heating rollers are configured to be driven independently, wherein the sealing machine comprises, downstream of the pair of tracking rollers, a second pair of heating rollers, and wherein the second pair of heating rollers can be disabled so as to not contact the fin when the fin is moved between the second pair of heating rollers.
 
11. A method for sealing a sealing material by heating a fin of the sealing material wrapped around a product by a sealing machine, the sealing machine comprising, in a transport direction of the sealing material, a pair of tracking rollers that tension the sealing material and a pair of heating rollers that seal the sealing material by applying heat to the fin of the sealing material moved between the pair of heating rollers, wherein the pair of tracking rollers and the pair of heating rollers are driven independently, wherein the method comprises adjusting a tension of the sealing material by driving the pair of tracking rollers and the pair of heating rollers, wherein the sealing machine comprises, downstream of the pair of tracking rollers, a second pair of heating rollers, wherein the second pair of heating rollers can be disabled so as to not contact the fin moved between the second pair of heating rollers, and wherein the method comprises disabling, or enabling the second pair of heating rollers depending on a tension to be applied to the sealing material.