US 12,258,231 B2
Combination of a dispenser for dispensing portions of sealing material with a sealing material
Holger Eichelmann, Hilden (DE); Norbert Bialas, Dormagen (DE); Massimiliano Casali, Pavia (IT); Peter O'Sullivan, Wicklow (IE); Rudolf Neumayer, Grosskarolinenfeld (DE); and Udo Hinterseer, Wattersdorf (DE)
Assigned to Henkel AG & Co. KGaA, Duesseldorf (DE)
Filed by Henkel AG & Co. KGaA, Duesseldorf (DE)
Filed on Apr. 9, 2021, as Appl. No. 17/301,646.
Application 17/301,646 is a continuation of application No. PCT/EP2019/077564, filed on Oct. 11, 2019.
Claims priority of application No. 18201345 (EP), filed on Oct. 18, 2018.
Prior Publication US 2021/0221631 A1, Jul. 22, 2021
Int. Cl. B32B 3/26 (2006.01); B65H 1/04 (2006.01)
CPC B65H 1/04 (2013.01) [B32B 3/266 (2013.01); Y10T 428/15 (2015.01)] 12 Claims
OG exemplary drawing
 
1. Combination of a dispenser for dispensing portions of sealing material with a sealing material in the form of a flexible film, wherein the dispenser comprises cutting means for cutting off portions of sealing material and wherein the sealing material is perforated to form predetermined portions of sealing material and comprises polytetrafluoroethylene and has the following parameters:
a film thickness of 50 to 500 μm;
a density between 1.20 and 1.80 g/cm3;
a longitudinal strength of more than 11 N/mm2;
a transversal strength of more than 2 N/mm2;
a longitudinal elongation of more than 200%; and
a transversal elongation of more than 1000%.