EP-4155231-B1 - AROMA COMPONENT VOLATILIZATION DEVICE, AND METHOD FOR MANUFACTURING AROMA COMPONENT VOLATILIZATION DEVICE
Inventors
- ONISHI, MASAYA
Dates
- Publication Date
- 20260506
- Application Date
- 20210528
Claims (5)
- An aroma component volatilization device comprising: a bag including therein a heating element that generates heat when exposed to air, an inner layer of the bag being a thermally conductive sheet on a base of which a thermally conductive material is vapor-deposited, and an outer layer of the bag being a holding sheet having air permeability, wherein the inner layer and the outer layer are spot bonded at fixed intervals to form an air layer between the thermally conductive sheet and the holding sheet.
- The aroma component volatilization device according to claim 1, wherein the thermally conductive sheet has aluminum that is vapor-deposited on the base that is made of resin in a form of a sheet.
- The aroma component volatilization device according to claim 1 or 2, wherein the thermally conductive sheet is bonded to the holding sheet at a part of the resin that melts and adheres to the holding sheet while the thermally conductive sheet is being perforated.
- A method for manufacturing an aroma component volatilization device, comprising: laminating a thermally conductive sheet on a top surface of a holding sheet, the thermally conductive sheet being composed of a base made of resin and a thermally conductive material vapor-deposited on the base, the holding sheet having air permeability; forming at least one through-hole passing through from the thermally conductive sheet to the holding sheet by using a perforating member heated hot enough to melt the base; forming a single laminated sheet composed of the thermally conductive sheet and the holding sheet to form an air layer therebetween by spot bonding a part of the base melted in the step of forming the through-hole to the holding sheet; folding the laminated sheet along an approximate midline with the thermally conductive sheet inside; and bonding peripheries of the folded laminated sheet.
- The method for manufacturing the aroma component volatilization device according to claim 4, further comprising dripping essential oil as an aroma component onto the holding sheet.
Description
Technical Field The present invention relates to an aroma component volatilization device for accelerating the volatilization of a volatile aroma component with heat, and a method for manufacturing such an aroma component volatilization device. Background Art Aroma component volatilization devices used in cars and houses, etc., are composed of a bag containing a heating element that can cause a chemical reaction and generate reaction heat. The heating element heats an aroma component such as perfume or essential oil, which is disposed near the bag to accelerate the volatilization of the components, thereby diffusing aroma. Of these aroma component volatilization devices, those that include a heating element which causes an oxidation reaction do not need electricity, flame, or water, etc. Thus, these devices are highly convenient because of their ease in handling and the wide range of places where they can be used. For example, one such aroma component volatilization device is shown in Patent Literature 1. The aroma component volatilization device shown in Patent Literature 1 includes a bag composed of a single or laminated sheet containing a sealant material. The bag contains a powdery heating element that can cause an oxidation reaction and generate heat when exposed to air. One side of the bag is covered with a holding sheet containing an aroma component. As a result, when the heating element reacts with oxygen and generates heat, the aroma component contained in the holding sheet is heated and volatilized. Patent Literature 2 discloses a perfume emitting device comprising a bag including therein a heating element that generates heat when exposed to air and an outer layer having air permeability being a holding sheet for the perfume. Citation List Patent Literature Patent Literature 1: Japanese Unexamined Patent Application Publication No. 2010-22405 (Pages 3 and 4, FIG. 1) Patent Literature 2: JP H09 48968 A Summary of Invention Technical Problem The aroma component volatilization device according to Patent Literature 1 and 2 can volatilize the volatile component through the bag when the aroma component is heated by the heating element for generating heat. However, if the heating element happens to slide over to one side in the bag, some areas of the bag that are located near the heating element may be heated exclusively and other areas may be left unheated. In such cases, the aroma component cannot continue to volatilize at a substantially constant amount for many hours. The present invention has been made in view of the above problems, and it is an object of the present invention to provide an aroma component volatilization device that can volatilize an aroma component at a substantially constant amount for many hours, and a method for manufacturing such an aroma component volatilization device. Solution to Problem To achieve the above object, an aroma component volatilization device according to the present invention includes a bag including therein a heating element that generates heat when exposed to air, an inner layer of the bag being a thermally conductive sheet on a base of which a thermally conductive material is vapor-deposited, and an outer layer of the bag being a holding sheet having air permeability, wherein the inner layer and the outer layer are spot bonded at fixed intervals to form an air layer between the thermally conductive sheet and the holding sheet. According to this structure, even if the heating element slides over to one side in the bag, the generated heat can spread throughout the thermally conductive sheet, thereby heating the holding sheet uniformly. Thus, the aroma component can continue to volatilize at a substantially constant amount for many hours. The thermally conductive sheet and the holding sheet are spot bonded at intervals. According to this structure, the thermally conductive sheet and the holding sheet together form an air layer between them, and the air layer prevents the aroma component from being heated excessively. The thermally conductive sheet may have aluminum that is vapor-deposited on the base that is made of resin in the form of a sheet. According to this structure, the flexible aluminum sheet preferably facilitates the storage and portability of the device. The thermally conductive sheet may be bonded to the holding sheet at a part of the resin that melts and adheres to the holding sheet while the thermally conductive sheet is being perforated. According to this structure, excessive inhibition of heat transmission from the thermally conductive sheet to the holding sheet can be prevented. To solve the aforementioned problems, a method according to the present invention for manufacturing an aroma component volatilization device includes the following steps. A thermally conductive sheet is laminated on a top surface of a holding sheet, the thermally conductive sheet being composed of a base made of resin and a thermally conductive material vapor-deposite