Title:
COOLING PACK
Document Type and Number:
Japanese Patent JP2019076325
Kind Code:
A
Abstract:
To provide a cooling pack which has a simple structure, hardly generates massive crystal even when being preserved at high temperature in high humidity, and has good touch and sufficient cooling effect.SOLUTION: A cooling pack having a double structure comprising an outer bag and an inner bag is such that: the outer bag is a laminate film in which a nonwoven fabric having a basis weight of 5-40 g/mand a resin film are laminated; urea having an average grain diameter of 6 mm or less as a chemical compound generating an endothermal reaction with water, and a chemical compound generating an endothermal reaction with water, excluding urea are encapsulated in any position inside the inner bag, or inside the outer bag and outside the inner bag; a ratio of nitrate is 20 mass% or less based on the total amount of the chemical compound generating an endothermal reaction with water; and a ratio of ammonium salt is 10 mass% or more based on the total amount of the chemical compound.SELECTED DRAWING: Figure 1
Inventors:
YOSHIKI TAKENOBU
Application Number:
JP2017204609A
Publication Date:
May 23, 2019
Filing Date:
October 23, 2017
Export Citation:
Assignee:
MITSUBISHI PAPER MILLS LTD
International Classes:
A61F7/10; F25D5/02