OUTER BAG FOR DISPOSABLE BODY WARMER PACKAGING AND DISPOSABLE BODY WARMER

• US 20190009960A1
• Filed: 12/25/2015
• Published: 01/10/2019
• Est. Priority Date: 12/25/2015
• Status: Active Grant

• Current Assignee: Kobayashi Pharmaceutical Company Limited
• Original Assignee: Kobayashi Pharmaceutical Company Limited
• Inventors: SAKURAI, Yuki, IGAUE, Tsuyoshi
• Granted Patent: US 10,322,860 B2
• Time in Patent Office: Days
• CPC Class Codes: A61F 2007/022 Bags therefor
• CPC Class Codes: A61F 2007/0222 made of synthetics, e.g. plastics
• CPC Class Codes: A61F 2007/0244 with layers
• CPC Class Codes: A61F 2007/0257 with a fluid impermeable layer
• CPC Class Codes: A61F 2007/0258 with a fluid permeable layer
• CPC Class Codes: A61F 2007/038 Carbon or charcoal, e.g. active
• CPC Class Codes: A61F 7/03 thermophore, i.e. self-heating, e.g. using a chemical reaction
• CPC Class Codes: A61F 7/034 Flameless
• CPC Class Codes: B32B 2250/24 All layers being polymeric
• CPC Class Codes: B32B 2255/10 on synthetic resin layer or on natural or synthetic rubber layer
• CPC Class Codes: B32B 2255/20 Inorganic coating
• CPC Class Codes: B32B 2255/205 Metallic coating
• CPC Class Codes: B32B 2255/26 Polymeric coating
• CPC Class Codes: B32B 2255/28 Multiple coating on one surface
• CPC Class Codes: B32B 23/04 comprising such cellulosic plastic substance as the main or only constituent of a layer, which is next to another layer of the same or of a different material next to a glass layer B32B17/08
• CPC Class Codes: B32B 23/08 of synthetic resin
• CPC Class Codes: B32B 2307/306 Resistant to heat
• CPC Class Codes: B32B 2307/31 Heat sealable
• CPC Class Codes: B32B 2307/4023 on the layer surface, e.g. ink
• CPC Class Codes: B32B 2307/518 bi-axially
• CPC Class Codes: B32B 2307/7244 : Oxygen barrier
• CPC Class Codes: B32B 2307/7246 : Water vapor barrier
• CPC Class Codes: B32B 2307/732 : Dimensional properties
• CPC Class Codes: B32B 2307/748 : Releasability
• CPC Class Codes: B32B 2307/75 : Printability
• CPC Class Codes: B32B 2439/46 : Bags
• CPC Class Codes: B32B 27/08 : of synthetic resin
• CPC Class Codes: B32B 27/30 : comprising vinyl (co)polymers; comprising acrylic (co)polymers
• CPC Class Codes: B32B 27/302 : comprising aromatic vinyl (co)polymers, e.g. styrenic (co)polymers
• CPC Class Codes: B32B 27/308 : comprising acrylic (co)polymers
• CPC Class Codes: B32B 27/32 : comprising polyolefins comprising vinyl (co)polymers or acrylic (co)polymers B32B27/30
• CPC Class Codes: B32B 27/325 : comprising polycycloolefins
• CPC Class Codes: B32B 27/34 : comprising polyamides
• CPC Class Codes: B32B 27/36 : comprising polyesters
• CPC Class Codes: B32B 27/365 : comprising polycarbonates
• CPC Class Codes: B32B 27/40 : comprising polyurethanes
• CPC Class Codes: B32B 7/12 : using interposed adhesives or interposed materials with bonding properties
• CPC Class Codes: B65D 65/22 : Details
• CPC Class Codes: B65D 65/40 : Applications of laminates for particular packaging purposes B65D1/0215, B65D1/28, B65D3/22, B65D5/0281, B65D5/563, B65D9/30, B65D29/02, B65D31/02, B65D75/26, B65D77/2024, B65D81/1275, B65D81/3811, B65D81/3823, B65D81/3834, B65D81/3846, B65D81/3858, B65D81/3874, B65D81/3886, B65D81/3897 take precedence; laminates per se or laminated packages characterised by the composition or
• CPC Class Codes: B65D 81/24 : Adaptations for preventing deterioration or decay of contents; Applications to the container or packaging material of food preservatives, fungicides, pesticides or animal repellants with thermal insulation B65D81/38

Abstract

An outer bag for disposable body warmer packaging and a disposable body warmer are provided that are excellent in a gas barrier property that inhibits permeation of oxygen gas, water vapor, and the like, which can allow swelling due to hydrogen gas generated during a storage period to be prevented.

Provided is an outer bag for disposable body warmer packaging having an accommodating portion accommodating a disposable body warmer accommodated in an air-permeable inner bag and generating heat through contact with air, the outer bag comprising a low air-permeability portion having an oxygen permeability of 1.5 to 20 cc/m²·day·atm measured at 20° C. and 90% RH and having a water vapor permeability of 0.05 to 10 g/m²·day measured at 40° C. and 90% RH; and an air-impermeable portion having an oxygen permeability of 1.3 cc/m²·day·atm or lower measured at 20° C. and 90% RH and a water vapor permeability of 2.0 g/m²·day or lower measured at 40° C. and 90% RH, wherein a ratio of an area of the low air-permeability portion to a total internal area of the accommodating portion is 15 to 75%.

Claims

1. An outer bag for disposable body warmer packaging having an accommodating portion accommodating a disposable body warmer accommodated in an air-permeable inner bag, the outer bag comprising:

a low air-permeability portion having an oxygen permeability of 1.5 to 20 cc/m²·

day·

atm measured at 20°

C. and 90% RH and a water vapor permeability of 0.05 to 10 g/m²·

day measured at 40°

C. and 90% RH; and

an air-impermeable portion having an oxygen permeability of 1.3 cc/m²·

day·

atm or lower measured at 20°

C. and 90% RH and a water vapor permeability of 2.0 g/m²·

day or lower measured at 40°

C. and 90% RH, and

wherein a ratio of an area of the low air-permeability portion to a total internal area of the accommodating portion is 15 to 75%.

2. The outer bag for disposable body warmer packaging according to claim 1, wherein a ratio of area of the low air-permeability portion to a total internal area of the accommodating portion is 50%.

3. The outer bag for disposable body warmer packaging according to claim 1, wherein the low air-permeability portion has a first substrate and a low air-permeability layer laminated on the first substrate, and the air-impermeable portion has a second substrate and an air-impermeable layer laminated on the second substrate, and the first substrate and the second substrate are heat-sealed.

4. The outer bag for disposable body warmer packaging according to claim 1, wherein a low air-permeability layer and an air-impermeable layer are provided on one sealant layer, and the low air-permeability portion has the low air-permeability layer, and the air-impermeable portion has the air-impermeable layer.

5. The outer bag for disposable body warmer packaging according to claim 1, wherein a low air-permeability layer and an air-impermeable layer are provided on one sealant layer, and the low air-permeability portion has the low air-permeability layer, and the air-impermeable portion has the low air-permeability layer and the air-impermeable layer.

6. The outer bag for disposable body warmer packaging according to claim 1, wherein the outer bag for disposable body warmer packaging has at least one heat-sealed portion formed by heat-sealing one or more laminated sheets, and the low air-permeability portion is provided in at least a part of a region adjacent to the heat-sealed portion.

7. The outer bag for disposable body warmer packaging according to claim 3, wherein the low air-permeability layer comprises a homopolymer or copolymer of vinylidene chloride, and the air-impermeable layer contains a metal or metal oxide.

8. A disposable body warmer packaged by the outer bag according to claim 1.

9. The outer bag for disposable body warmer packaging according to claim 4, wherein the low air-permeability layer comprises a homopolymer or copolymer of vinylidene chloride, and the air-impermeable layer contains a metal or metal oxide.

10. The outer bag for disposable body warmer packaging according to claim 5, wherein the low air-permeability layer comprises a homopolymer or copolymer of vinylidene chloride, and the air-impermeable layer contains a metal or metal oxide.