Separable laminated container and associated technology

• US 20040112921A1
• Filed: 12/08/2003
• Published: 06/17/2004
• Est. Priority Date: 03/10/1995
• Status: Active Grant

• Current Assignee: Yoshino Kogyosho Company Limited
• Original Assignee: Yoshino Kogyosho Company Limited
• Inventors: Shibano, Yoshio, Goto, Takayuki, Nomoto, Tsugio, Akiyama, Yoshio, Yoneyama, Masashi
• Granted Patent: US 7,055,719 B2
• Time in Patent Office: Days
• US Class Current: 222/321.9
• CPC Class Codes: B05B 11/026 Membranes separating the content remaining in the container from the atmospheric air to compensate underpressure inside the container
• CPC Class Codes: B05B 11/1047 the pump being preassembled as an independent unit before being mounted on the container
• CPC Class Codes: B29C 2793/0045 Perforating
• CPC Class Codes: B29C 2793/0054 partially cutting through the material
• CPC Class Codes: B29C 2793/009 after shaping
• CPC Class Codes: B29C 2949/3094 preform having at least partially loose components, e.g. at least partially loose layers
• CPC Class Codes: B29C 49/04 Extrusion blow-moulding
• CPC Class Codes: B29C 49/22 using multilayered preforms or parisons
• CPC Class Codes: B29L 2009/00 Layered products
• CPC Class Codes: B29L 2009/001 the layers being loose
• CPC Class Codes: B29L 2031/7158 Bottles
• CPC Class Codes: B65D 1/0215 multilayered B65D81/3837 takes precedence
• CPC Class Codes: B65D 83/0055 Containers or packages provided with a flexible bag or a deformable membrane or diaphragm for expelling the contents
• CPC Class Codes: G01F 11/028 the dosing device being provided with a dip tube and fitted to a container, e.g. to a bottleneck
• CPC Class Codes: Y10S 83/914 Flash trimming
• CPC Class Codes: Y10T 83/9416 To punch and cut punched article

Abstract

A separable laminated container (A) of the present invention comprises an outer layer (1) made of synthetic resin and having an air suction hole (10) and an inner layer (2) made of synthetic resin and separably laminated on the inside of the outer layer, the inner layer having a portion previously separated from the outer layer just around the air suction hole. The air suction hole can be formed by driving a punch into the outer layer at a neck (4) of the separable laminated container from the outside, and punching just the outer layer leaving the inner layer behind. The portion of the inner layer previously separated from the outer layer may be left in the inwardly extended state. The inner layer is preferably made of synthetic resin having flextural modules of less than 10,000 kg/cm².

Claims

1. A container with pump comprising:

(a) a container body made up of an inner layer and an outer layer which are made of synthetic resin and separably laminated on each other, wherein the outer layer has an air suction hole formed therein and a portion of said inner layer adjacent to the air suction hole is partly separated from the outer layer; and

(b) a pump comprising a cylinder inserted into the container body through a neck of said container body and a cap whereby the pump is hermetically fitted to said neck, wherein the cylinder is provided with a flange-like seal around the outer periphery thereof, the flange-like seal coming in contact with the inner surface of said neck tightly.

2. A container with pump comprising:

(a) a container body made up of an inner layer and an outer layer which are made of synthetic resin and separably laminated on each other, wherein the outer layer has an air suction hole formed therein and a portion of said inner layer adjacent to the air suction hole is partly separated from the outer layer;

(b) a pump comprising a cylinder inserted into the container body through a neck of said container body and a cap whereby the pump is hermetically fitted to said neck; and

(c) an inner lid having a ring-like seal coming in contact with the outer surface of the cylinder of said pump tightly, and fitted in the neck of said container body.

3. A container with pump as claimed in claim 2, wherein said cylinder has a narrow groove or a roughened surface on the outer surface thereof extending from the lower edge thereof to a position above the seal of the inner lid after installation of the pump.

4. A container with pump as claimed in claim 2, wherein said seal of said inner lid has a narrow groove or a roughened surface formed in a sealing surface thereof.

5. A container with pump as claimed in claim 2, wherein said seal of said inner lid protrudes inward and upward in such a manner as to elastically expand and contract in the radial direction.