摘要:
A mold assembly for use by children to produce in a microwave oven plastic play pieces. The assembly includes a mold, non-reactive to microwave energy and is provided with shaped cavities for receiving a flowable, plastic molding composition non-reactive to microwave energy and having a predetermined curing temperature. Underlying the cavities is a thermal heating element formed by microwave energy-absorbing ferrite particles dispersed in an inert matrix. The particles have a Curie point higher than the curing temperature of the molding composition so that the heating element heats the composition in the mold cavities to effect curing and hardening thereof, thereby forming the play pieces. The mold assembly is enclosed within a safety container non-reactive to microwave energy. The container is provided with a removable cover and a temperature-responsible latching mechanism which releases the cover to permit withdrawal of the mold assembly only when its temperature is reduced to a level at which it is safe to handle.
摘要:
Microwave diffuser films are describe that provide a modified microwave energy field on one side of the diffuser film and on the other side. The films include an insulative substrate having a first side upon which is deposited a metallic coating capable of selectively reflecting a portion of incoming microwave energy. A coating is formed in a plurality of discrete areas having a predetermined reflectivity. The shape and spacing of the areas may be varied so that energy emission from noncoated surfaces of the substrate is spatially distributed in one or more ways; i.e. the energy emission more uniform than the energy impinging on the coated surface, the energy emission is focused on one or more particular location and/or the energy emission is shielded. A food packaging system for microwave cooking, which includes the microwave diffuser film of this invention, is also described.
摘要:
Means and method for heating loads with microwave energy, with the loads being located on a metal substrate or in a metal container. A layer of organic material is located on the outside surface of the container or substrate, the layer having microwave absorbing substances contained in a minimum thickness of the layer. The absorbing substances include both dielectric and magnetic components that provide useful power absorption, the amount of the dielectric component being effective to compress the wavelength of the microwave energy while simultaneously preserving useful impedance to the magnetic component of the energy. Useful power absorption within a range of minimum layer of thicknesses is obtained. The amounts of the dielectric and magnetic components, in addition, transport the heat generated within the layer to the metal container or substrate at rates sufficient to maintain internal temperature of the layer near that of the load. A thin impedance matching film is located on the surface of the layer opposite that of the metal substrate.
摘要:
The present invention is directed to a cooking container for use in heating food in a microwave oven. Specifically, the present invention concerns a cooking utensil capable of heating itself up by microwaves to heat food to such an extent as to be browned but not to be scorched and be stuck to the cooking surface. A fluororesin layer 1 is formed on the top surface of a metal plate 2, and a heat buildup layer 3 adapted to be dielectrically heated by microwaves is formed on the bottom thereof. A covering 4 permeable to microwaves is provided on the outside of the heat buildup layer. The covering is partially formed into legs to support the bottom surface of the plate. A lid capable of reflecting microwaves may be put on the metal plate to shield the food to be cooked against microwaves.
摘要:
A method is shown for forming a microwaveable container which is heated in the presence of microwave energy to warm contents placed within the container. The container has at least one exposed wall which does not contact the contents of the container. The exposed wall of the container is coated with a microwaveable, room temperature vulcanizable composition and allowed to cure. Exposure of the coated cup to microwave energy serves to heat the contents within the container.
摘要:
A medium formed by a mixture of polymeric binder with conductive metal and either semiconductive particles or galvanic couple alloy particles that can be coated or printed on a substrate to convert electromagnetic radiation to heat without arcing and produce increase heating of foods. Conversion efficiency can be controlled by the choice, thickness, pattern and amount of materials used in the medium. The medium can be formulated to be used repeatedly without burn out or can be formulated to be used only once after which it becomes microwave inert. The conductive particles are typically aluminum, copper, zinc and nickel; the semiconductive particles are typically carbon, titanium carbide, silicon carbide and zinc oxide; and the galvanic couple alloy particles are typically aluminum-nickel alloy, aluminum-cobalt alloy and aluminum-copper alloy.
摘要:
The present invention provides a food package useful for heating a food product in a microwave oven. The package has a tray with an opening for introducing the food product therein. Once the food has been introduced into the tray, the opening is sealed using a microwave releasable adhesive. The microwave releasable adhesive seal includes a microwave interactive material in close proximity to a heat-releasable resin containing a blowing agent. The microwave interactive material preferably is composed of metallic flakes which become hot when exposed to microwave energy. Consequently, when the package is heated in a microwave oven, the microwave interactive material becomes hot, causing the blowing agent to decompose and form a gas. The gas formation destroys the integrity of the seal between the tray and the closure, permitting the seal to be opened easily after heating in a microwave oven.
摘要:
Process for chemically modifying microwave interactive film and chemically modified microwave interactive film, chemically modified microwave interactive laminates and packages containing chemically modified microwave interactive film.
摘要:
This invention provides a food material-container combination which allows the food material to be cooked and solidified by simple operations without a pot, and which simplifies the work of cleaning up after cooking. Referring to FIG. 1, a self-standing container 11 has an opening 12 at the top portion thereof. A food material such as tofu material is charged in the container 11 together with water. The upper portion 13 is sealed by folding it by hand. The container and contents are then thoroughly shaken, whereafter the content of the container 11 is heated by a microwave oven. After a prescribed period of heating, the container 11 is taken out from the microwave oven and the container is cut along the line 16. The end product can then be removed.
摘要:
The invention provides a distribution and heating method for foodstuffs and an inexpensive disposable microwave shipping, heating and serving package for food composed of a paperboard carton and a lossy microwave energy absorber which becomes hot when exposed to microwave radiation. The absorber is associated in conductive heat transfer relationship with a food product contained in the package and is usually bonded to a structural supporting sheet such as aluminum foil. The package also includes a shield e.g., a metal foil sheet adapted to reduce by a controlled amount the direct transmission of microwave energy into the food product. The shield may have holes of a selected size to provide a predetermined controlled amount of direct microwave energy to the food product or can be a nonperforated sheet or screen. The absorber heats the adjacent surface of the food by conduction to a sufficiently high temperature to provide searing or browning while controlled microwave exposure heats the inside. The thickness of the absorber is substantially in the range wherein absorber thickness and temperature response are positively correlated.