High gloss high density polyethylene containers

Patent metadata

Field	Value
Publication number	US-9827705-B2
Application number	US-201514688227-A
Country	US
Kind code	B2
Filing date	Apr 16, 2015
Priority date	Apr 16, 2015
Publication date	Nov 28, 2017
Grant date	Nov 28, 2017

Abstract

The present invention is directed to a process for making a low coefficient of friction (COF) high gloss polyolefin bottle by the following: a) adding a high gloss metallocene polyethylene during a manufacturing process on the outer layer of a container; b) adding a slip agent on the outer layer of the container wherein the container has a gloss range greater than 60 gloss units with a coefficient of friction of less than 0.25.

First claim

What is claimed is:

1. A process for making a low coefficient of friction (COF) high gloss polyolefin bottle by the following:
a) adding a high gloss metallocene polyethylene during a manufacturing process on the outer layer of a container;
b) adding a slip agent on the outer layer of the container wherein the slip agent is selected from the group consisting of saturated fatty acids, monounsaturated fatty acids, polyunsaturated fatty acids, fatty amides, fluoroelastomers, polydimethylsiloxanes and mixtures thereof;

wherein the container has a gloss range greater than 60 gloss units with a coefficient of friction of less than 0.25 and wherein the process is applied to a container having at least 2 layers.

2. A process according to claim 1 wherein a mold polish is less than 0.25 mm grit.

3. A process according to claim 1 wherein a mold polish is less than 0.2 mm grit.

4. A process according to claim 1 wherein a mold polish is less than 0.02 mm grit.

5. A process according to claim 1 wherein a mold polish is less than 0.07 mm grit.

6. The process of claim 1 wherein the bottle is made by injection blow molding, extrusion blow molding, injection stretch molding and mixture thereof.

7. The process according to claim 1 wherein the process is applied to a container having at least 2 layers and is extrusion blow molded.

8. The process according to claim 1 wherein the process further comprises a mold polish finish of less than 0.25 mm grit.

9. A process according to claim 1 wherein the process is applied to a container having at least 2 layers and is injection blow molded.

10. A process according to claim 9 wherein the process further comprises a mold polish finish of less than 0.25 mm grit.

11. The process of claim 1 wherein the production rate is greater than 100 bottles per minute.

12. The process of claim 1 wherein the container has a gloss retention of at least about 37%.

13. The process according to claim 1 wherein the fatty amides is selected from the group consisting of oleamide, stearamide, behenamide, erucamide, n-(2-hydroxyethyl) erucamide, lauramide, N,N′-ethylene-bis-oleamide, N,N′-ethylene bissteamide, oleyl palmitamide, stearyl erucamide, tallow amide, arachidonylethanolamide, n-arachidonoyl maleimide and mixtures thereof.

Assignees

• Procter & Gamble

Inventors

• Sena Douglas David
• Dalisay Huberto Miel

Classifications

• B29K2105/0005

  containing compounding ingredients (releasing, lubricating or separating agents B29C33/56, fibers B29K2105/08, B29K2105/12; fillers B29K2105/16, recycled material B29K2105/26) · CPC title

• B65B3/022

  Making containers by moulding of a thermoplastic material · CPC title

• B29K2023/06

  PE, i.e. polyethylene · CPC title

• B29C49/22

  using multilayered preforms or parisons · CPC title

• B29L2031/7158

  Bottles · CPC title