US 12,434,488 B2
Methods for printing and wrapping
Kenichi Seguchi, Okaya (JP); Chigusa Sato, Matsumoto (JP); and Emi Takeuchi, Shiojiri (JP)
Assigned to SEIKO EPSON CORPORATION, (JP)
Filed by SEIKO EPSON CORPORATION, Tokyo (JP)
Filed on Apr. 27, 2023, as Appl. No. 18/307,939.
Claims priority of application No. 2022-074404 (JP), filed on Apr. 28, 2022.
Prior Publication US 2023/0347663 A1, Nov. 2, 2023
Int. Cl. B41J 11/00 (2006.01); B41J 2/175 (2006.01); B41J 3/407 (2006.01)
CPC B41J 11/0021 (2021.01) [B41J 2/175 (2013.01); B41J 3/407 (2013.01)] 6 Claims
OG exemplary drawing
 
1. A printing method for printing a shrink film with radiation-curable ink, the method comprising:
forming an image on the shrink film with a first radiation-curable ink by an ink jet method; and
forming a fixing pattern by applying a second radiation-curable ink onto a surface of the shrink film that is to come into contact with an object to be wrapped with the shrink film,
bonding a first end of the shrink film to an opposite second end in a bonding region of the shrink film to form a ring;
locating the ring over the object to be wrapped and adhering the fixing pattern to the object to be wrapped to secure the shrink film to the object to be wrapped without using a jig; and
applying heat to the shrink film to shrink-wrap the shrink film to the object to be wrapped,
wherein the first radiation-curable ink includes a polymerization initiator, and
the polymerization initiator includes at least one of 2,4,6-trimethylbenzoyldiphenylphosphine oxide, bis(2,4,6-trimethylbenzoyl) phenylphosphine oxide, bis(2,6-dimethoxybenzoyl)-2,4,4-trimethylpentylphosphine oxide, 2,4-diethylthioxanthen-9-one, 2-isopropylthioxanthone and 2,4-diethylthioxanthone.