This invention provides a thin and discreet coolant device, and single and multiple unit dispenser containers containing the same. The coolant device comprises a first packet being comprised of a waterproof or water-resistant material containing water therewithin and further comprising a fold and further adapted to have a selectively permanent connection between external and internal layers of said fold, such that upon applying a force to laterally extend the ends of said packet, a rupture of said first packet occurs allowing for the leakage of the water contained therewithin. The coolant device further comprises a second packet which encases said first packet, comprising an exterior and interior layer, wherein said interior layer is comprised of an absorbent material and said exterior layer is comprised of a waterproof or water-resistant material and wherein an amount of powdered urea is located within an interior of said second packet. Upon lateral extension of the sides of the second packet, a rupture of said first packet occurs allowing for the leakage of the water contained therewithin and its exposure to said urea located within said second packet, which exposure results in an endothermic reaction resulting in an outer surface of said second packet becoming cooler to the touch than an outer surface temperature prior to said rupture. Use of the coolant devices to provide cooling to a skin surface on demand is described, as well.

This invention provides a thin and discreet coolant device, and single and multiple unit dispenser containers containing the same. The coolant device comprises a first packet being comprised of a waterproof or water-resistant material containing water therewithin and further comprising a fold and further adapted to have a selectively permanent connection between external and internal layers of said fold, such that upon applying a force to laterally extend the ends of said packet, a rupture of said first packet occurs allowing for the leakage of the water contained therewithin. The coolant device further comprises a second packet which encases said first packet, comprising an exterior and interior layer, wherein said interior layer is comprised of an absorbent material and said exterior layer is comprised of a waterproof or water-resistant material and wherein an amount of powdered urea is located within an interior of said second packet. Upon lateral extension of the sides of the second packet, a rupture of said first packet occurs allowing for the leakage of the water contained therewithin and its exposure to said urea located within said second packet, which exposure results in an endothermic reaction resulting in an outer surface of said second packet becoming cooler to the touch than an outer surface temperature prior to said rupture. Use of the coolant devices to provide cooling to a skin surface on demand is described, as well.

Provided is a cold-storage agent freezing at a temperature range of a freezer in a household refrigerator and excellent in cooling retaining performance. In a cold-storage agent including: water; ammonium chloride; potassium chloride; and sodium sulfate, content of the ammonium chloride, the potassium chloride, and the sodium sulfate satisfies the following Formula (1):
1.0<ammonium chloride/(potassium chloride+sodium sulfate)<5.0Formula (1)

Provided is a cold-storage agent freezing at a temperature range of a freezer in a household refrigerator and excellent in cooling retaining performance. In a cold-storage agent including: water; ammonium chloride; potassium chloride; and sodium sulfate, content of the ammonium chloride, the potassium chloride, and the sodium sulfate satisfies the following Formula (1):
1.0<ammonium chloride/(potassium chloride+sodium sulfate)<5.0Formula (1)

A handle top includes a top panel defining a first side edge and a second side edge disposed opposite from the first side edge; a side panel, an inner edge of the side panel hingedly attached to the top panel at the first side edge; and a handle loop comprising a handle portion and a base portion, the base portion secured to the side panel.

A modular box assembly includes a box, the box defining a top end and a bottom end disposed opposite from the top end, the box including a plurality of side panels extending between the top end and the bottom end, the plurality of side panels at least partially defining a box cavity within the box; and an inner box positioned within the box cavity, the inner box dividing the box cavity into a first sub-compartment and a second sub-compartment, the inner box including a channel tab extending outward from a side panel of the inner box, the channel tab engaging a first side panel of the plurality of side panels of the box.

A wearable cold pack formed with a reservoir for retention of liquid, and a cooling agent composition including salt mixed with water in the reservoir. The salt having a capacity to provide an endothermic effect to enhance cooling when mixed with water. The salt material is primarily ammonium nitrate that has been stabilized against detonation by the addition of an effective amount of phosphate material. The wearable cold pack may be configured as a joint wrap, a head wrap, a neck wrap, a shoulder wrap, a helmet or many other articles. The wearable cold pack cooling agent composition is capable of cooling in the amount of at least 130 Btu/lb due to endothermic effect when mixed with water.

A wearable cold pack formed with a reservoir for retention of liquid, and a cooling agent composition including salt mixed with water in the reservoir. The salt having a capacity to provide an endothermic effect to enhance cooling when mixed with water. The salt material is primarily ammonium nitrate that has been stabilized against detonation by the addition of an effective amount of phosphate material. The wearable cold pack may be configured as a joint wrap, a head wrap, a neck wrap, a shoulder wrap, a helmet or many other articles. The wearable cold pack cooling agent composition is capable of cooling in the amount of at least 130 Btu/lb due to endothermic effect when mixed with water.

A modular box assembly includes a box, a box cavity defined within the box, the box defining a top end and a bottom end, the top end defining a box opening to the box cavity, the box includes a side panel extending from the top end to the bottom end; a shoulder attached to the side panel, the shoulder extending inward from the side panel and into the box cavity, the shoulder comprising a first sub-shoulder and a second sub-shoulder, the first sub-shoulder, the second sub-shoulder, and the side panel defining a shoulder channel; and a support bracket comprising a channel tab and a support shelf, the channel tab positioned within the shoulder channel, the channel tab frictionally engaging the first sub-shoulder and the second sub-shoulder to secure the support bracket within the shoulder channel, the support shelf extending into the box cavity.

There is described an apparatus for heating or cooling a material to be heated or to be cooled. The apparatus includes: a first compartment for containing the material to be heated or to be cooled; and a second compartment containing a phase change material, wherein the phase change material is either for generating heat to heat the first compartment or absorbing heat to cool the first compartment when undergoing a phase change. There are further described various different activating arrangements for activating a change of phase of the phase change material.