Mechanically Activated, Disposable Exothermic Heating Pad for Food Containers

Abstract

This invention relates to a packaging-independent heating pad designed to maintain the temperature of food in takeaway and outdoor settings. The invention incorporates a bistable dome mechanism in its lower body that flexes inward upon externally applied physical force, an integrated piercing pin that bursts the liquid sac within the reaction chamber upon inward collapse of the dome, and a system that initiates an exothermic reaction when the released liquid comes into contact with calcium oxide (CaO) granules. The invention offers a cost-effective and environmentally friendly thermal protection solution that can be easily integrated into food packaging.

Description

TARIFF MECHANICALLY ACTIVATED AND SINGLE-USE FOR FOOD CONTAINERS. EXOTHERMIC HEATING BASE Technical Field to Which the Invention Relates This invention is used for packaging, food transport, and outdoor food preparation. to maintain the temperature of beverages without needing an external energy source mechanical, developed for this purpose, and usable independently of food containers. A disposable heating pad that operates on the principle of activated, exothermic reaction. It is related to. State of the Art With the expansion of takeaway networks today, food leaves the restaurant... Maintaining the temperature of the product until it reaches the consumer has become a significant logistical challenge. In the known state of the technology, it generally provides passive insulation to keep food warm. Carrying cases, styrofoam boxes, or aluminum-coated packaging are used. However, this Passive systems only slow down heat loss, preventing food from cooling during long transport times. It cannot prevent it. Current solutions that provide active heating generally include electric resistors and lithium-ion batteries. or includes USB-connected heating circuits. The production of such electronic solutions The costs are quite high for a single-use takeaway model. Also, it's battery-powered. Disposal of these systems leads to electronic waste problems, causing environmental issues. It negatively impacts sustainability. Chemical heaters, as the art currently stands, are mostly found in military rations. or are available in forms integrated into special packaging. These systems contain heaters. The mechanism is a direct part of the food container. Food companies use these heaters. They have to change all their packaging designs, which increases adaptation costs. It increases. In addition, activation of existing systems usually requires the user to purchase a water package. This requires tearing it open and pouring it into the reaction chamber by hand; this situation may occur accidentally during transport. 35. It poses spill and safety risks. The Purpose of the Invention and the Problems It Aims to Solve The main purpose of this invention is to overcome the high costs, packaging dependency, and A modular and universal heating pad that reduces 40 activation difficulty problems. to reveal. Another aim of the invention is to eliminate the need for restaurants to change their existing packaging systems. without any additional features, it can be placed directly under standard food containers as a standalone heater. The goal is to provide 45 resources. Another important aim of the invention is to make the activation process mechanical, clean and safe. The aim is to bring it about. The user can do this without any direct contact with liquids or chemicals, simply by touching the bottom. by applying an external physical force to the flexible mechanical dome located at the base, the reaction 1 It can initiate. Another aim of the invention is to reduce costs. Extra springs, buttons, or complex components are eliminated. Instead of moving parts, a flexible dome and a drilling pin work together with the lower body. The complexity of production and assembly is reduced by using this mechanism. Brief Description of the Invention The heating pad, designed to achieve the stated purposes, is heat-resistant. a lower main body (10) made of polymer material, the upper part of the lower main body (10) aluminum foil top seal layer (20) covering part of the reaction chamber, calcium Oxide-based granular chemical fuel (30), explosive water blister containing activation liquid (40), piercing pin (50) used to pierce this water blister, flexible located in the center of the bottom sole It includes a dome structure (60) and a sealing upper flange area (70). When the user applies a certain external force to the flexible dome structure (60), the dome moves inwards. It changes position and moves the piercing pin (50) upwards. The piercing pin (50), It punctures the water blister (40) containing the activation fluid. The released activation fluid, It comes into contact with calcium oxide-based granular chemical fuel (30) in the reaction chamber. and the exothermic reaction begins. The resulting heat is transferred to the top sealing layer of aluminum foil (20) It is transferred from there to the food container above. Brief Description of the Figures Figure 1 shows the general top and side views of the heating pad that is the subject of the invention. Figure 2, lower main body (10), aluminum foil top seal layer (20), calcium oxide based granular chemical fuel (30), water blister (40), piercing pin (50), flexible dome structure (60) and It shows a cross-sectional view including the upper flange area (70). Figure 3 shows an exploded view illustrating the positions of the components relative to each other. It shows. Figure 4 shows the water blister of the piercing pin (50) by applying external force to the flexible dome structure (60). 35 (40) shows the principle of starting the reaction by piercing it. Detailed Description of the Invention The subject of the invention is the lower main body (10) of the disposable heater pad, which is heat resistant. It is made of 40 polymer materials. The lower main body (10) contains calcium oxide-based granules. a reaction chamber in which chemical fuel (30) and water blister (40) can be positioned It contains. The lower main body (10) has a flexible dome structure (60) at the base center. Flexible dome The 45 structure (60) bends inwards when a certain physical force is applied from the outside, thus changing position. It is designed to change the inner surface center of the flexible dome structure (60). The pin (50) is located. Thanks to this arrangement, the dome structure (60) collapses inwards, the penetrating pin (50) allows the water blister to move linearly in the direction of (40). 2 Water blister (40) on the axis of movement of the piercing pin (50) in the reaction chamber. It is positioned and contains activation fluid. The water blister (40) of the piercing pin (50) When it punctures the wall, the activation fluid is released. The released activation fluid then reacts. It comes into contact with calcium oxide-based granular chemical fuel (30) placed in its chamber and An exothermic reaction occurs, releasing heat. The upper flange area (70) located on the upper side of the lower main body (10) is fitted with aluminum foil. The sealing layer (20) is heat sealed. The aluminum foil top sealing layer (20) is reacted. It seals the chamber airtight and transfers the generated heat to the food container placed on top. It helps. In a preferred application of the invention, the lower main body (10), flexible dome structure (60) and Piercing pin (50), a polypropylene-based structure that can be produced by plastic injection method. It can be designed in this way. This reduces the number of parts and eliminates the need for an additional mechanical actuation. The need for a spring or separate moving part is reduced. The geometry and thickness of the flexible dome structure (60) when no external force is applied the piercing pin (50) should remain in a position where it will not pierce the water blister (40) when external force is applied It is determined in such a way as to allow the piercing pin (50) to pierce the water blister (40). Thus Mechanical activation is performed in a controlled manner. List of Reference Marks Lower main body Aluminum foil top seal layer Calcium oxide-based granular chemical fuel 40 Water blisters / rupturable fluid sacs 50 Piercing Pins 60 Flexible dome structure 35 70 Upper flange / sealing area 3

Claims

REQUESTS 1. Designed to be placed under food and beverage containers to keep food warm. It is a disposable heating pad designed for holding, and its feature is that it is made of heat-resistant polymer. a lower main body made of material, containing a reaction chamber inside (10); word The subject is located at the lower base center of the lower main body (10), on which a certain outer A single-piece flexible dome structure that changes position by flexing inwards when force is applied. (60); integrated into the inner surface center of this flexible dome structure (60), inside the dome at least one piercing pin (50) moving upward linearly with the collapse; reaction inside the chamber, located on the axis of movement of the drilling pin (50) and inside the activation chamber at least one rupturable water blister containing fluid (40); into the reaction chamber filled and in contact with the activation fluid upon bursting of the water blister (40) exothermic reaction initiating calcium oxide-based granular chemical fuel (30); sub-main Heat-sealed to the upper flange area (70) of the body (10), sealing the reaction chamber. an aluminum foil top sealing layer that closes the container above and transfers the generated heat to the container above. (20) is included.

2. The heating pad mentioned in Claim 1 is characterized by the fact that the lower main body (10), flexible dome structure (60) and piercing pin (50) can be produced by plastic injection method It consists of a polypropylene-based structure.

3. The heating pad mentioned in Claim 1 is characterized by its flexible dome structure. (60) geometry and wall thickness of the piercing pin (50) water when no external force is applied It should remain in a position that will not puncture the blister (40) and when a certain external force is applied, it should inward. It is determined that it will move the piercing pin (50) by migrating. 1