Manufacturing method of sheet for food containers and sheet for food containers manufactured by using the same
AssigneeD & D Best One Corporation
InventorYoung Taik WOO
Life of this patent
Estimating the term…
Abstract
A manufacturing method of a sheet for food containers and a sheet for food containers manufactured by using the same, the method comprising: step 1 of blending a poly L-lactide (polylactic acid: PLA) and a polybutylene succinate (PBS) resin with a base material, and adding an organically treated organic cloisite; step 2 of melt-mixing the resin composition obtained in step 1 at high temperature by using an extruder, followed by quenching with cold water to be flattened; and step 3 of drying a flat plate-shaped resin obtained in step 2 by using a hot air dryer.
Claims12
A manufacturing method of a sheet for food containers, which forms a main body, the method comprising:
- step 1 of blending a poly L-lactide (polylactic acid:
- PLA) and a polybutylene succinate (PBS) resin with a base material, and adding an organically treated organic cloisite;
- step 2 of melt-mixing a resin composition obtained in step 1 at high temperature by using an extruder, followed by quenching with cold water to be flattened;
- and
- step 3 of drying a flat plate-shaped resin obtained in step 2 by using a hot air dryer.
A manufacturing method of a sheet for food containers, which is used as a film cover fused with the main body, the method comprising:
- step S1 of preparing a polypropylene (PP) and a low density polyethylene (LDPE) film;
- step S2 of increasing a surface energy by performing a corona discharge treatment on the surface of a base film by using a corona treater;
- step S3 of adding a plasticizer in an aqueous dextrin solution and heating it, and then adding the solution on a corona discharge-pretreated PP film or LDPE film while keeping warm;
- and
- step S4 of applying the solution evenly on the surface using a bird type applicator and drying it to prepare a dextrin/PP composite film.
Dependencies are inferred from the claim text.