US 11,701,443 B2
Process for treating container preforms with non-contacting plasma treatment
Véronique Bernard, Octeville-sur-mer (FR)
Assigned to Sidel Participations, Octeville-sur-mer (FR)
Appl. No. 16/304,238
Filed by SIDEL PARTICIPATIONS, Octeville-sur-Mer (FR)
PCT Filed May 18, 2017, PCT No. PCT/FR2017/051211
§ 371(c)(1), (2) Date Nov. 23, 2018,
PCT Pub. No. WO2017/203136, PCT Pub. Date Nov. 30, 2017.
Claims priority of application No. 1654683 (FR), filed on May 25, 2016.
Prior Publication US 2020/0316240 A1, Oct. 8, 2020
Int. Cl. A61L 2/14 (2006.01); A61L 2/04 (2006.01); A61L 2/08 (2006.01); A61L 2/12 (2006.01); A61L 2/20 (2006.01); B29C 49/36 (2006.01); B29C 49/46 (2006.01); B29C 49/68 (2006.01); B29L 31/00 (2006.01)
CPC A61L 2/14 (2013.01) [A61L 2/04 (2013.01); A61L 2/085 (2013.01); A61L 2/12 (2013.01); A61L 2/208 (2013.01); B29C 49/36 (2013.01); B29C 49/46 (2013.01); B29C 49/68 (2013.01); A61L 2202/23 (2013.01); B29L 2031/712 (2013.01)] 14 Claims
OG exemplary drawing
 
1. A treatment process for use in manufacturing containers from at least one preform (10) made of thermoplastic material, said treatment process having successively at least the following steps:
(a) a first step, consisting in treating, using a first injection nozzle (32), at least the interior of a preform (10) using hydrogen peroxide (H2O2);
(b) a second step, consisting in heating, using heating means (34, 46), a body (14) of said preform (10) to a molding temperature to make possible subsequent transformation of the body into a container; and
(c) a third step, consisting in treating said preform (10), using a second injection nozzle (40), with plasma to reduce a concentration of hydrogen peroxide (H2O2) residue remaining in said preform (10) after heating, wherein the second infection nozzle (40) is not introduced through a neck opening of the preform (10).