There is provided a thermal therapy pad useful in relieving pain and having a plurality of easily removable layers on the side of the pad normally facing the skin. The removal of layers results in increased heat removal or delivery to the skin. The removable layers may be re-attached desirably the u
There is provided a thermal therapy pad useful in relieving pain and having a plurality of easily removable layers on the side of the pad normally facing the skin. The removal of layers results in increased heat removal or delivery to the skin. The removable layers may be re-attached desirably the user find the pad too hot, or may be moved to the opposite side of the pad, or discarded. The pad may use an iron powder reactive core which reacts exothermically with air to provide heating or water and other reactants that react endothermically. More than one core may be used to further tailor the amount and rapidity of the temperature change.
대표청구항▼
1. A thermal therapy pad comprising a first reactive core which undergoes a reaction, an insulating layer attached to a first side of said reactive core, and a plurality of adhesively, detachably attached removable layers attached to a second side of said reactive core, wherein said removable layers
1. A thermal therapy pad comprising a first reactive core which undergoes a reaction, an insulating layer attached to a first side of said reactive core, and a plurality of adhesively, detachably attached removable layers attached to a second side of said reactive core, wherein said removable layers each comprise a layer selected from the group consisting of spunbond webs, meltblown webs, coform webs, airlaid webs, bonded carded webs, filled films and combinations and laminates thereof.2. The pad of claim 1 wherein said removable layers each comprise a laminate of spunbond webs and meltblown webs.3. A thermal therapy pad comprising a first reactive core having between about 20 and 60 grams of a mixture of iron powder and an alkali metal salt, which undergoes an exothermic reaction upon exposure to air, an insulating layer having a basis weight between about 300 and 500 gsm, attached to a first side of said reactive core, and between about 2 and 5 detachably attached removable layers attached to a second side of said reactive core, wherein each of said removable layers comprises a four layer laminate of a first spunbond web, a first meltblown web, a second spunbond web and a second meltblown web.4. The pad of claim 3 wherein said removable layers are detachably attached with a pressure sensitive adhesive.5. The pad of claim 4 wherein said detachably attached removable layers may be attached to said insulating layer after detachment from said second side of said reactive core.6. The pad of claim 5 wherein said insulating layer is made by a process selected from the group consisting of airlaying, coforming, bonded carded web and nonwoven processes.7. A thermal therapy pad comprising a first reactive core having between about 30 and 50 grams of a mixture of iron powder and an alkali metal salt, which undergoes an exothermic reaction upon exposure to air, a closed-cell foam insulating layer having a basis weight between about 300 and 500 gsm, attached to a first side of said reactive core, and between about 2 and 5 detachably attached removable layers attached to a second side of said reactive core, wherein each of said removable layers has a thickness between about 0.25 and 2 mm, is attached with a pressure sensitive adhesive, and comprises a three layer, ultrasonically bonded laminate of a spunbond web, a meltblown web and a filled film.
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