US 11,872,742 B2
Container with globe-like particles and an inner metal layer and method for its fabrication
Heinrich Angst, Zürich (CH)
Assigned to TitanX Coating Technologies GmbH, Zürich (CH)
Appl. No. 17/917,638
Filed by TITANX COATING TECHNOLOGIES GMBH, Zürich (CH)
PCT Filed Apr. 10, 2020, PCT No. PCT/EP2020/060351
§ 371(c)(1), (2) Date Oct. 7, 2022,
PCT Pub. No. WO2021/204404, PCT Pub. Date Oct. 14, 2021.
Prior Publication US 2023/0191683 A1, Jun. 22, 2023
Int. Cl. B29C 49/22 (2006.01); B29C 48/00 (2019.01); B29C 48/32 (2019.01); B29C 49/04 (2006.01); B29C 49/00 (2006.01); B29C 49/42 (2006.01); B29C 70/64 (2006.01); B65D 23/02 (2006.01); B29K 23/00 (2006.01); B29K 483/00 (2006.01); B29K 501/00 (2006.01); B29K 505/00 (2006.01); B29K 509/02 (2006.01); B29L 31/00 (2006.01)
CPC B29C 49/22 (2013.01) [B29C 48/022 (2019.02); B29C 48/32 (2019.02); B29C 49/0005 (2013.01); B29C 49/04116 (2022.05); B29C 49/4273 (2013.01); B29C 70/64 (2013.01); B65D 23/02 (2013.01); B29K 2023/06 (2013.01); B29K 2023/12 (2013.01); B29K 2483/00 (2013.01); B29K 2501/00 (2013.01); B29K 2505/00 (2013.01); B29K 2509/02 (2013.01); B29K 2995/007 (2013.01); B29L 2031/712 (2013.01)] 23 Claims
OG exemplary drawing
 
1. A method for producing a container made of a plastic composition having an inner coating on an inner surface of the container, the inner coating having a maximum thickness of 1000 nm and comprising at least one metal layer,
the method comprising:
preparing the plastic composition comprising at least one base polymer material and at least a first additive,
wherein at least 2.5% by volume of a total volume of the plastic composition is made up by the first additive and wherein the first additive comprises globe-like shaped particles having a hardness on the Mohs scale of at least 4;
extrusion blow molding of the container by
a) heating and blending the prepared plastic composition until at least the base polymer material is plasticized;
b) forming a parison by a die and a blow pin,
wherein the globe-like shaped particles of the first additive are accumulated on an inner surface of the parison resulting from shear forces exercised by die and blow pin;
c) blow molding of the parison to form the container,
wherein globe-like shaped particles of the first additive which located on the inner surface of the container increase the surface area and the hardness of the inner surface of the container;
applying the at least one metal layer of the inner coating onto the inner surface of the container, wherein the applied metal layer bonds to the globe-like shaped particles of the first additive located on the inner surface of the container.