Hollow molded article having excellent aqueous liquid slipperiness

Patent metadata

Field	Value
Publication number	US-10507948-B2
Application number	US-201515523985-A
Country	US
Kind code	B2
Filing date	Nov 13, 2015
Priority date	Nov 13, 2014
Publication date	Dec 17, 2019
Grant date	Dec 17, 2019

Abstract

A hollow molded container of the present invention has a resin layer forming its inner surface, and droplets of an oily liquid are distributed on the surface of the resin layer. In the hollow molded container, slipperiness to a less flowable liquid is enhanced remarkably and the slipperiness is exhibited for a long period of time.

First claim

The invention claimed is:

1. A hollow molded article including a resin layer forming an inner surface, wherein droplets of an oily liquid are distributed on a surface of the resin layer, wherein the inner surface is a hybridized surface comprising a matrix resin and a substance having a lower critical surface tension as compared with the matrix resin, wherein the surface of the resin layer is formed of the matrix resin and a dispersed resin having a lower critical surface tension as compared with the matrix resin, and wherein the matrix resin is an ethylene resin and the dispersed resin is a propylene resin.

2. The hollow molded article according to claim 1 , wherein the droplets have an equivalent circle diameter in a range of 25 to 500 μm.

3. The hollow molded article according to claim 1 , wherein the droplets are distributed in a density of 100 to 1000 number/cm 2 .

4. The hollow molded article according to claim 1 , wherein the oily liquid is blended in the resin layer.

5. The hollow molded article according to claim 1 , wherein the hollow molded article is a direct blow-molded bottle having a closed mouth portion.

6. The hollow molded article according to claim 1 , wherein the hollow molded article is a long-length pipe.

7. A method of storing an aqueous liquid in the hollow molded article according to claim 1 , which comprises bringing the aqueous liquid into contact with the surface of the resin layer forming the inner surface, in a state where the droplets are distributed on the surface of the resin layer forming the inner surface.

8. A hollow molded article including a resin layer forming an inner surface, wherein droplets of an oily liquid are distributed on a surface of the resin layer, wherein the inner surface is a hybridized surface comprising a matrix resin and a substance having a lower critical surface tension as compared with the matrix resin, wherein the surface of the resin layer is formed of the matrix resin and a bleedable organic additive having a lower critical surface tension as compared with the matrix resin, and wherein the matrix resin is an ethylene resin and the bleedable organic additive is a fatty acid metal salt.

9. The hollow molded article according to claim 8 , wherein the droplets have an equivalent circle diameter in a range of 25 to 500 μm.

10. The hollow molded article according to claim 8 , wherein the droplets are distributed in a density of 100 to 1000 number/cm 2 .

11. The hollow molded article according to claim 8 , wherein the oily liquid is blended in the resin layer.

12. The hollow molded article according to claim 8 , wherein the hollow molded article is a direct blow-molded bottle having a closed mouth portion.

13. The hollow molded article according to claim 8 , wherein the hollow molded article is a long-length pipe.

14. A method of storing an aqueous liquid in the hollow molded article according to claim 8 , which comprises bringing the aqueous liquid into contact with the surface of the resin layer forming the inner surface, in a state where the droplets are distributed on the surface of the resin layer forming the inner surface.

Assignees

• Toyo Seikan Group Holdings Ltd

Inventors

• Akutsu Yosuke
• Iwamoto Shinya

Classifications

• B65D1/02

  Bottles or similar containers with necks or like restricted apertures, designed for pouring contents (thermally-insulated containers B65D81/38, A47J41/00; {feeding-bottles A61J9/00}) · CPC title

• B65D85/72 Primary

  for edible or potable liquids, semiliquids, or plastic or pasty materials · CPC title

• B65D1/0246

  Closure retaining means, e.g. beads, screw-threads · CPC title

• C08J7/04

  Coating · CPC title

• B65D1/08 Primary

  adapted to discharge drops · CPC title