Heating body and method for producing the same

Patent metadata

Field	Value
Publication number	US-12097144-B2
Application number	US-201816622511-A
Country	US
Kind code	B2
Filing date	Jun 14, 2018
Priority date	Jun 15, 2017
Publication date	Sep 24, 2024
Grant date	Sep 24, 2024

Abstract

A heating body, in which a heat-generating composition that generates heat in the presence of air, is accommodated in a bag body formed by heat sealing a one-surface side laminated base material including a first base material and a second base material, and a covering material, at a peripheral edge portion thereof. The first base material has a nonwoven fabric layer and a heat sealable resin layer; and the second base material is a sheet in which an olefin-based nonwoven fabric layer and a resin film are laminated using an olefin-based resin. The first base material and the second base material are capable of forming a space into which a body part can be inserted or held. The heat sealable resin layer and the nonwoven fabric layer are bonded together, and the resin film of the second base material and the covering material are bonded together.

First claim

The invention claimed is:

1. A heating body in which a heat-generating composition that generates heat by reacting with air is accommodated in a bag body formed by heat sealing a one-surface side laminated base material comprising a first base material and a second base material, and a covering material, at a peripheral edge portion thereof, characterized in that:
the first base material has one surface being a nonwoven fabric layer and an other surface being a heat sealable resin layer;
the second base material is a sheet in which an olefin-based nonwoven fabric layer and a resin film are laminated using an olefin-based resin that forms a laminate layer between the olefin-based nonwoven fabric layer and the resin film;
the first base material and the second base material are capable of forming a space into which a body part can be inserted or held, in a part surrounded by the peripheral edge portion; and
in a heat sealed part of the bag body peripheral edge portion, the heat sealable resin layer of the first base material and the nonwoven fabric layer of the second base material are bonded together, and the resin film of the second base material and the covering material are bonded together.

2. The heating body according to claim 1 , wherein the resin constituting the olefin-based nonwoven fabric layer of the second base material has a melting point of 130° C. or higher and 160° ° C. or lower.

3. The heating body according to claim 1 , wherein both of a bonding strength between the first base material and the second base material and a bonding strength between the second base material and the covering material are 0.75 kgf/15 mm or more in four locations of the peripheral edge portion of the heating body.

4. The heating body according to claim 1 , wherein the first base material is provided with at least one slit or a separable line.

5. The heating body according to claim 4 , wherein the separable line has a straight line or a wavy line perforation.

Assignees

• Ferric Inc
• S T Corp

Inventors

• Miyashita Eiji
• Miyashita Hirokazu
• Usui Hitoshi
• Sakamoto Mitsuhiro

Classifications

• A61F2007/0228

  with belt or strap, e.g. with buckle · CPC title

• A61F2007/0223

  made of textiles · CPC title

• A61F2007/0037

  Finger · CPC title

• A61F2007/022

  Bags therefor · CPC title

• A61F2007/038

  Carbon or charcoal, e.g. active · CPC title