Mold for manufacturing a food packaging material having uniform coating of oil

Patent metadata

Field	Value
Publication number	US-10105873-B2
Application number	US-201615384733-A
Country	US
Kind code	B2
Filing date	Dec 20, 2016
Priority date	Sep 21, 2011
Publication date	Oct 23, 2018
Grant date	Oct 23, 2018

Abstract

The present invention relates to a food packaging material for packing food, more particularly to a food packaging material having a uniform coating of oil, a method of manufacturing the same, and a mold for manufacturing the same. The food packaging material includes a plurality of grooves formed on one surface of the food packaging material; and an oil layer uniformly applied to the one surface of the food packaging material, being put into the grooves. According to the present invention, there are provided a food packaging material which continuously maintains a uniform coating of oil and thus minimizes sticking of contents to a surface of the packaging material, a method of manufacturing the same, and a mold for manufacturing the same.

First claim

What is claimed is:

1. A mold for manufacturing a food packaging material having a uniform coating of oil, the mold comprising:
a first metal layer;
a photoresist layer formed on the first metal layer and including a plurality of photoresist holes disposed at predetermined intervals; and
a plurality of prism bodies formed on the first metal layer, each including a first portion disposed in the photoresist holes and a second portion protruding from an upper surface of the photoresist layer,
wherein the first portion and the second portion have substantially the same width.

2. The mold of claim 1 , wherein the prism bodies have a cylindrical shape or a polygonal prism shape and are arranged in a grid pattern.

3. The mold of claim 1 , wherein the first metal layer is deposited on a silicon layer disposed under the first metal layer.

4. The mold of claim 1 , wherein the first metal layer comprises titanium.

5. The mold of claim 1 , wherein the prism bodies comprise nickel or gold.

6. The mold of claim 1 , wherein the prism bodies comprise nickel.

7. The mold of claim 1 , wherein the prism bodies are formed by galvanoplasty.

8. A mold, comprising:
a titanium layer;
a photoresist layer formed on the titanium layer and including holes; and
nickel bodies formed on the titanium layer, each including a first portion disposed in the photoresist holes and a second portion protruding from an upper surface of the photoresist layer,
wherein the first portion and the second portion have substantially the same width, and the mold is used for manufacturing a food packaging material.

9. The mold of claim 8 , wherein the prism bodies are formed by galvanoplasty.

Assignees

• Cj Cheiljedang Corp
• Korea Advanced Inst Sci & Tech

Inventors

• Lee Jin Hwan
• Jo Kyoung Sik
• Park Min Young
• Lee Sang Eon
• Lee Seung Seob

Classifications

• B29C33/56

  Coatings {, e.g. enameled or galvanised}; Releasing, lubricating or separating agents {(in-mould coating B29C37/0028; using or applying separating agents B29C37/0067)} · CPC title

• B29C33/38

  characterised by the material or the manufacturing process (B29C33/44 takes precedence) · CPC title

• B65D65/42

  Applications of coated or impregnated materials · CPC title

• B29C33/424 Primary

  Moulding surfaces provided with means for marking or patterning (for injection moulding B29C45/372) · CPC title

• B29K2905/14

  Noble metals, e.g. silver, gold or platinum · CPC title