Plastic molded body

Patent metadata

Field	Value
Publication number	US-2018257817-A1
Application number	US-201515518090-A
Country	US
Kind code	A1
Filing date	Oct 8, 2015
Priority date	Oct 29, 2014
Publication date	Sep 13, 2018
Grant date	—

Abstract

A plastic molded body has a surface including a non-fluororesin and a rough surface formed on the surface, in which a fluorine atom is incorporated into the molecular chain of a non-fluororesin forming the rough surface. The molded body maintains excellent liquid repellency for a long period of time and exhibits the same levels of drainage and liquid drop-off properties as the initial levels even when it is brought into contact with a liquid repeatedly.

First claim

1 . A plastic molded body having a surface comprising a non-fluororesin and a rough surface formed on the surface, wherein a fluorine atom is incorporated into the molecular chain of a non-fluororesin forming the rough surface.

2 . The plastic molded body according to claim 1 , wherein the rough surface has a primary irregular surface and a secondary irregular surface which is finer than the primary irregular surface and formed within the primary irregular surface, and the fluorine atom is incorporated into the molecular chain of a non-fluororesin forming the secondary irregular surface.

3 . The plastic molded body according to claim 2 , wherein a much finer tertiary irregular surface is formed within the secondary irregular surface, and the fluorine atom is incorporated into the molecular chain of a non-fluororesin forming the tertiary irregular surface.

4 . The plastic molded body according to claim 1 , wherein when a droplet is dropped on the rough surface, an area ratio ϕs represented by the projection area of a solid-liquid interface per unit area is 0.05 to 0.8.

5 . The plastic molded body according to claim 4 , wherein the rough surface has a rectangular irregular structure.

6 . The plastic molded body according to claim 1 , wherein when an arithmetic average roughness corresponding to an amplitude of the irregular structure forming the rough surface is represented by Ra and an average length of a ½ pitch (R 0 ) of the irregular structure is represented by RSm, the rough surface satisfies Ra/RSm≥50×10 −3 .

7 . The plastic molded body according to claim 1 which is a package material used to contain a liquid substance.

8 . The plastic molded body according to claim 7 , wherein the package material has the form of a bottle, cap or spout, and the rough surface is formed on a part in contact with a liquid substance.

Assignees

• Toyo Seikan Group Holdings Ltd

Inventors

• Iwasaki Tsutomu
• Aoya Masaki
• Kimura Satoo

Classifications

• C08J7/123

  Treatment by wave energy or particle radiation (C08J7/18 takes precedence) · CPC title

• C08J7/126

  Halogenation · CPC title

• B29L2031/7158

  Bottles · CPC title

• B29K2995/0093

  hydrophobic · CPC title

• B65D47/40

  with drip catchers or drip-preventing means · CPC title