Multi-layer direct blow bottle and production process therefor

Patent metadata

Field	Value
Publication number	US-10603880-B2
Application number	US-201515501007-A
Country	US
Kind code	B2
Filing date	Aug 26, 2015
Priority date	Aug 27, 2014
Publication date	Mar 31, 2020
Grant date	Mar 31, 2020

Abstract

A multi-layer direct blow bottle in which a metallic layer containing a metal pigment having an average thickness of not more than 1 μm dispersed in a resin is formed at a position where it is visible from the outer surface side.

First claim

The invention claimed is:

1. A multi-layer direct blow bottle wherein a metallic layer containing a metal pigment having an average thickness of not more than 1 μm dispersed in a resin is formed at a position where it is visible from an outer surface side, and
wherein at least 20 mass % of the metal pigment has a thickness of not more than 100 nm.

2. The multi-layer direct blow bottle as claimed in claim 1 , wherein the metallic layer is formed on an outer surface layer or under an outer surface transparent resin layer.

3. The multi-layer direct blow bottle as claimed in claim 1 , wherein the metal pigment is dispersed in an amount of 0.5 to 30.0 parts by mass based on 100 parts by mass of the resin in the metallic layer.

4. The multi-layer direct blow bottle as claimed in claim 1 , wherein the resin is metallocene-catalized linear low-density polyethylene.

5. The multi-layer direct blow bottle as claimed in claim 1 , wherein the metal pigment is an aluminum pigment.

6. A process for producing the multi-layer direct blow bottle as claimed in claim 1 , the process comprising the steps of:
forming a tube-like preform by coextrusion of a resin composition comprising the metal pigment having an average thickness of not more than 1 μm dispersed therein; and
blowing a blow fluid while one end of the preform is closed to shape the preform into a bottle form,
wherein the resin composition comprising the metal pigment dispersed therein is prepared by mixing the metal pigment after the resin is plasticized.

Assignees

• Toyo Seikan Kaisha Ltd
• Toyo Aluminium Kk
• Toyo Aluminum Kk

Inventors

• Katou Yuuichirou
• Anzai Yusuke
• Fudaba Tetsuya
• Ikeya Akihiko
• Ozawa Satomi

Classifications

• B32B27/32

  comprising polyolefins {(comprising vinyl (co)polymers or acrylic (co)polymers B32B27/30)} · CPC title

• B29L2009/003

  comprising a metal layer · CPC title

• 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

• B29C48/0017

  combined with blow-moulding or thermoforming · CPC title

• B29K2105/258

  Tubular · CPC title