US 12,240,641 B2
Sealing method
Marcus Stein, Freital (DE); and Sascha Bach, Freital (DE)
Assigned to WATTTRON GmbH, Freital (DE)
Appl. No. 18/025,405
Filed by WATTTRON GmbH, Freital (DE)
PCT Filed Sep. 9, 2021, PCT No. PCT/EP2021/074849
§ 371(c)(1), (2) Date Mar. 9, 2023,
PCT Pub. No. WO2022/053574, PCT Pub. Date Mar. 17, 2022.
Claims priority of application No. 10 2020 123 565.8 (DE), filed on Sep. 9, 2020.
Prior Publication US 2023/0331418 A1, Oct. 19, 2023
Int. Cl. B65B 51/14 (2006.01); B29C 65/30 (2006.01); B29C 65/82 (2006.01); B29L 31/00 (2006.01); B65B 51/10 (2006.01)
CPC B65B 51/14 (2013.01) [B29C 65/30 (2013.01); B29C 65/8276 (2013.01); B29L 2031/712 (2013.01); B65B 2051/105 (2013.01)] 10 Claims
OG exemplary drawing
 
1. A sealing method for thermally bonding thermoplastic materials along a planar, bent or curved sealing contour of a product, comprising:
heating, in a packaging machine a sealing member;
pressing, in the packaging machine, the sealing member onto a region to be sealed, wherein the sealing member has a plurality of heating elements, which are individually controllable; and
process control, comprising:
measuring a characteristic variable from each heating element; and
evaluating the characteristic variable from each heating element, comprising deciding whether the product is fault-free or faulty.