Food container having Si-DLC layer and manufacturing method thereof

Patent metadata

Field	Value
Publication number	US-10099837-B2
Application number	US-201314383059-A
Country	US
Kind code	B2
Filing date	Mar 11, 2013
Priority date	Mar 13, 2012
Publication date	Oct 16, 2018
Grant date	Oct 16, 2018

Abstract

There are provided a food container having a silicon incorporated diamond like carbon (Si-DLC) layer and a method thereof. The food container includes a container made of a plastic material; an intermediate thin layer formed on a surface of the container; and a Si-DLC layer formed on the intermediate thin layer. Accordingly, it is possible to provide porous plastic container having a Si-DLC layer and a manufacturing method thereof, which can implement high oxygen barrier properties and excellent mechanical characteristics by stably depositing a Si-DLC layer on a food container having lower surface energy without breaking the Si-DLC layer.

First claim

The invention claimed is:

1. A food container having a silicon incorporated diamond like carbon (Si-DLC) layer, including:
a container made of a plastic material;
an intermediate layer formed on a surface of the container; and
a Si-DLC layer formed on the intermediate layer,
wherein a plasma pretreatment is performed on the surface of the container so as to improve the adhesion between the surface of the container and the intermediate layer.

2. The food container of claim 1 , wherein the container is formed of polypropylene (PP).

3. The food container of claim 1 , wherein the intermediate layer is formed of silicon (Si).

4. A manufacturing method of a food container having a Si-DLC layer, the method comprising the steps of:
preparing a container made of a plastic material;
performing a plasma treatment on a surface of the container;
depositing an intermediate layer on the surface of the container; and
depositing a Si-DLC layer on the intermediate layer.

5. The method of claim 4 , wherein in the step of performing of the plasma treatment, the plasma treatment is performed using argon (Ar).

6. The method of claim 4 , wherein the container may be formed of PP.

7. The method of claim 4 , wherein the intermediate layer is formed of Si.

8. The method of claim 4 , wherein the step of depositing the intermediate layer and the step of depositing the Si-DLC layer are performed through plasma chemical vapor deposition.

Assignees

• Cj Cheiljedang Corp
• Korea Inst Sci & Tech

Inventors

• Lee Kwang Ryeol
• Moon Myoung Woon
• Kim Seong Jin
• Song Eun Kyung
• Jo Kyoung Sik
• Yun Tae Kyung

Classifications

• C23C16/278

  doping or introduction of a secondary phase in the diamond · CPC title

• C08J7/042

  with two or more layers, where at least one layer of a composition contains a polymer binder · CPC title

• B65D81/30

  by excluding light or other outside radiation (wrappers B65D65/16) · CPC title

• Y10T428/1383

  Vapor or gas barrier, polymer derived from vinyl chloride or vinylidene chloride, or polymer containing a vinyl alcohol unit is sandwiched between layers [continuous layer] · CPC title

• C23C16/26

  Deposition of carbon only · CPC title