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US 12,579,909 B2Granted
Film for wrapping and manufacturing method thereof
AssigneeKorea Electronics Technology Institute
InventorSoon Hyung Kwon
Life of this patent
Estimating the term…
Abstract
A film for wrapping including a heat shrinkable film shrinkable when the heat shrinkable film reaches a predetermined temperature, and a capsule layer formed at one surface of the heat shrinkable film while including a plurality of microcapsules is disclosed. Electrophoretic particles are included in the microcapsules. Accordingly, a color or text represented at the film for wrapping is variable.
Claims15
A film for wrapping comprising:
- a heat shrinkable film shrinkable in a predetermined shrinkage direction when the heat shrinkable film reaches a predetermined temperature, the predetermined shrinkage direction being at least one of a first direction (E1), which is a longitudinal direction of the film, in which the heat shrinkable film contracts when heated or a second direction (E2), which is a transverse direction perpendicular to the longitudinal direction;
- and
- a capsule layer formed at one surface of the heat shrinkable film and the capsule layer comprising a plurality of microcapsules,
- wherein the capsule layer comprises:
- the plurality of microcapsules each including quantum dots;
- and
- a binder configured to fix the plurality of microcapsules to one another and fix the plurality of microcapsules to the heat shrinkable film, and
- wherein each of the plurality of microcapsules is fixed in a state in which a size of each of the plurality of microcapsules in the predetermined shrinkage direction of the heat shrinkable film is greater than a size of each of the plurality of microcapsules in a predetermined thickness direction of the heat shrinkable film.
5 more elements
A film for wrapping comprising:
- a heat shrinkable film shrinkable in a predetermined shrinkage direction when the heat shrinkable film reaches a predetermined temperature, the predetermined shrinkage direction being at least one of a first direction (E1), which is a longitudinal direction of the film, in which the heat shrinkable film contracts when heated or a second direction (E2), which is a transverse direction perpendicular to the longitudinal direction;
- a capsule layer formed at one surface of the heat shrinkable film and comprising a plurality of microcapsules each including quantum dots;
- and
- an adhesive layer made of a material having heat shrinkability and formed under the capsule layer.
1 more element
A method of manufacturing a film for wrapping, comprising:
- preparing a heat shrinkable film shrinking in a predetermined shrinkage direction, the predetermined shrinkage direction being at least one of a first direction (E1), which is a longitudinal direction of the film, in which the heat shrinkable film contracts when heated or a second direction (E2), which is a transverse direction perpendicular to the longitudinal direction;
- forming, on the heat shrinkable film, a capsule layer with a plurality of microcapsules each including quantum dots and a binder mixed inside of the capsule layer;
- and
- fixing the capsule layer in a pressed state of each of the plurality of microcapsules such that a size of each of the plurality of microcapsules is increased in the predetermined shrinkage direction of the heat shrinkable film.
1 more element
Dependencies are inferred from the claim text.