Laminate having anti-bacterial and mildewproofing actions

• US 6,200,582 B1
• Filed: 06/29/1998
• Issued: 03/13/2001
• Est. Priority Date: 06/30/1997
• Status: Expired due to Fees

• Current Assignee: Idemitsu Petrochemical Co., Ltd. (Idemitsu Kosan Company Limited), Nagase Chemical Company Limited (Nagase & Company Limited)
• Original Assignee: Idemitsu Petrochemical Co., Ltd. (Idemitsu Kosan Company Limited), Nagase Chemical Company Limited (Nagase & Company Limited)
• Inventors: Hayashi, Takeo, Tanaka, Ikuya, Iwamoto, Eiji, Onishi, Toshimasa
• Primary Examiner(s): ZIRKER, DANIEL R
• Application Number:
  US09/106,346
• Time in Patent Office: 988 Days
• Field of Search: 424/404, 424/402, 424/407, 514/365, 442/124, 442/123
• US Class Current: 424/404
• CPC Class Codes: A01N 2300/00 Combinations or mixtures of active ingredients covered by classes A01N27/00 - A01N65/48 with other active or formulation relevant ingredients, e.g. specific carrier materials or surfactants, covered by classes A01N25/00 - A01N65/48
• CPC Class Codes: A01N 25/34 Shaped forms, e.g. sheets, not provided for in any other sub-group of this main group
• CPC Class Codes: A01N 31/08 Oxygen or sulfur directly attached to an aromatic ring system
• CPC Class Codes: B32B 2307/7145 Rot proof, resistant to bacteria, mildew, mould, fungi
• CPC Class Codes: B32B 2323/046 LDPE, i.e. low density polyethylene
• CPC Class Codes: B32B 2377/00 Polyamides
• CPC Class Codes: B32B 27/08 of synthetic resin
• CPC Class Codes: B32B 27/32 comprising polyolefins comprising vinyl (co)polymers or acrylic (co)polymers B32B27/30
• CPC Class Codes: B32B 27/34 comprising polyamides
• CPC Class Codes: B32B 7/12 using interposed adhesives or interposed materials with bonding properties
• CPC Class Codes: Y10T 442/2525 Coating or impregnation functions biologically [e.g., insect repellent, antiseptic, insecticide, bactericide, etc.]
• CPC Class Codes: Y10T 442/2533 Inhibits mildew

Abstract

There is provided an anti-bacterial mildewproofing laminate, comprising at least two films or sheets each having organic substance permeability different from one another; and at least one adhesive layer which comprises an anti-bacterial mildewproofing agent containing parachlorometaxylenol as an active ingredient, and which intervenes between the adjacent films or sheets so that they are clad to one another. The above laminate exhibits durable anti-bacterial and mildewproofing actions without any special processing, is inexpensive, and shows anti-bacterial and mildewproofing actions even on surfaces out of contact with the laminate

Claims

1. A bag comprising,

a bag having anti-bacterial and mildew proofing actions, comprising at least two films or sheets each of the films or sheets having different permeability to an organic substance, and one of said films or sheets being on the inside of the bag and having better permeability to said organic substance;

and

at least one adhesive layer which comprises an anti-bacterial and mildew-preventing agent containing para-chloro-meta-xylenol as an active ingredient, wherein said para-chloro-meta-xylenol is dissolved in ethyl acetate; and

wherein said adhesive layer intervenes between the adjacent films or sheets so that the films or sheets are arrayed on to one another;

wherein 0.1 to 15% by weight of p-chloro-m-xylenol is contained in said adhesive layer; and

wherein the content of p-chloro-m-xylenol in the bag is from 0.002 to 1.35 g/m².

2. The bag as claimed in claim 1, wherein said films or sheets comprise at least one material selected from the group consisting of synthetic resins, paper, fabrics, and metals.

3. The bag as claimed in claim 1, wherein one of the two films or sheets to be arrayed on to one another is a metal foil.

4. The bag as claimed in claim 1, wherein one or both of the two films or sheets to be arrayed on to one another are made of paper.

5. The bag as claimed in claim 1, wherein the films or sheets are arrayed on to one another by a dry lamination method or a wet lamination method using an adhesive incorporated with said anti-bacterial mildew-preventing agent.

6. The bag as claimed in claim 1, wherein the films or sheets are arrayed on to one another by an extrusion sandwich lamination method using an adhesive incorporated with said anti-bacterial mildew-preventing agent.