FLOW THROUGH HEATER

An electrical heating device comprises a body; an insulating material disposed proximate the body, the insulating material being in the form of a base layer dielectric; a heater disposed proximate the insulating material; a top dielectric layer disposed proximate the heater, the top dielectric layer and the insulating material cooperating to encapsulate the heater; and a protection housing surrounding the heater, the top dielectric layer, and the insulating material.

FLOW THROUGH HEATER

An electrical heating device for medical equipment is provided. The heating device includes a body, which may be an insulating body forming a channel therethrough for fluid travel, an insulating material surrounding the body, and a heater surrounding the body and the insulating material. In other forms, the electrical heating device for medical equipment has a conducting body, instead of an insulating body, forming a channel therethrough for fluid travel. A base dielectric layer is disposed on the conducting body, and a heater surrounds the base dielectric layer and the conducting body. A top dielectric layer is disposed on the heater, and a protection housing surrounds the top dielectric layer.

HOT RUNNER NOZZLE HEATER AND METHODS OF MANUFACTURE THEREOF

A hot runner nozzle heater is provided that includes a sleeve defining a slot extending along a length of the sleeve. A first dielectric layer is disposed over an outer surface of the sleeve, and a resistive element layer is disposed over the first dielectric layer, wherein the resistive element layer defines a resistive circuit pattern that is preferably formed by a laser trimming process. A pair of terminal leads are secured to a portion of the resistive element layer thus defining a termination area, and the termination area is positioned proximate the slot and away from the proximal end and the distal end of the sleeve. A second dielectric layer is disposed over the resistive element layer but not over the termination area, a third dielectric layer is disposed over the termination area, and a protective layer disposed over the second dielectric layer and the third dielectric layer.

HIGH DYNAMIC TEMPERATURE CONTROL SYSTEM

The major problems in a typical variothermal molding system using a transfer medium include low dynamic molding cycles, inefficient use of energy, absence of temperature selectivity on the mold surfaces, absence of temperature separation between cavity and rest of the molding tool. The present invention relates to a heating/cooling module for a molding system and for heating and cooling a target. The heating/cooling module comprises a substrate including a mold surface, the mold surface defining a part of a mold cavity; a cooling unit disposed adjacent to the mold surface for cooling the mold surface; and a layered heater directly formed on the cooling unit or the substrate by thermal spraying for heating the mold surface.

FLOW THROUGH HEATER

... ²An electrical heating device comprises a body; an insulating ²material disposed proximate the body, the insulating material being in the ²form of a base layer dielectric; a heater disposed proximate the insulating ²material; a top dielectric layer disposed proximate the heater, the top ²dielectric layer and the insulating material cooperating to encapsulate the ²heater; and a protection housing surrounding the heater, the top dielectric ²layer, and the insulating material.² ...

HIGH DYNAMIC TEMPERATURE CONTROL SYSTEM

A heating/cooling module (10) for a molding system includes a mold surface (18) forming a part of a mold cavity (17). A cooling unit (14) is disposed adjacent to the mold surface (18) for cooling the mold surface (18). A layered heater (16) is disposed adjacent to the mold surface (18) for heating the mold surface (18).

HOT RUNNER NOZZLE HEATER AND METHODS OF MANUFACTURE THEREOF

Hot runner nozzle heater and methods of manufacture thereof

Split-sleeve heater and removal tool

High dynamic temperature control system

A heating/cooling module for a molding system includes a mold surface forming a part of a mold cavity. A cooling unit is disposed adjacent to the mold surface for cooling the mold surface. A layered heater is disposed adjacent to the mold surface for heating the mold surface.

Split-sleeve heater and removal tool

A tool for removing a split-sleeve heater from a target object, such as a hot runner nozzle body, is provided that includes a handle, a shaft extending from the handle, and a protrusion disposed around at least a portion of a distal end portion of the shaft. The protrusion defines a shoulder, and the shoulder is adapted to engage a removal feature of the split-sleeve heater. In another form, a split-sleeve heater is provided that includes a heater body having opposed ends and a slot extending between the opposed ends. A recess is formed conjointly with the slot proximate at least one of the opposed ends, which is adapted for engagement by a removal tool. Methods of operating the tool and forming the slot of the split-sleeve heater are also provided.

Hot runner nozzle heater and methods of manufacture thereof

A hot runner nozzle heater is provided that includes a sleeve defining a slot extending along a length of the sleeve. A first dielectric layer is disposed over an outer surface of the sleeve, and a resistive element layer is disposed over the first dielectric layer, wherein the resistive element layer defines a resistive circuit pattern that is preferably formed by a laser trimming process. A pair of terminal leads are secured to a portion of the resistive element layer thus defining a termination area, and the termination area is positioned proximate the slot and away from the proximal end and the distal end of the sleeve. A second dielectric layer is disposed over the resistive element layer but not over the termination area, a third dielectric layer is disposed over the termination area, and a protective layer disposed over the second dielectric layer and the third dielectric layer.

Split-sleeve heater and removal tool

A tool for removing a split-sleeve heater from a target object, such as a hot runner nozzle body, is provided that includes a handle, a shaft extending from the handle, and a protrusion disposed around at least a portion of a distal end portion of the shaft. The protrusion defines a shoulder, and the shoulder is adapted to engage a removal feature of the split-sleeve heater. In another form, a split-sleeve heater is provided that includes a heater body having opposed ends and a slot extending between the opposed ends. A recess is formed conjointly with the slot proximate at least one of the opposed ends, which is adapted for engagement by a removal tool. Methods of operating the tool and forming the slot of the split-sleeve heater are also provided.

HOT RUNNER NOZZLE HEATER AND METHODS OF MANUFACTURE THEREOF

An instrumented heater sleeve is provided that has a plurality of zones, a dielectric layer disposed over an outer surface of the sleeve, a resistive element layer disposed over the first dielectric layer, and a plurality of pairs of lead wires secured to a portion of the resistive element layer. Each pair of lead wires is connected to and corresponds with each of the zones and a protective layer is disposed over the dielectric layer. An amount of power is supplied to each of the zones and adjusted during a test run, or multiple test runs, to achieve a desired temperature profile along a heating target such as a hot runner nozzle. Methods of designing a hot runner nozzle heater using the instrumented heater sleeve are also provided.

Hot runner nozzle heater and methods of manufacture thereof

A hot runner nozzle heater is provided that includes a sleeve defining a slot extending along a length of the sleeve. A first dielectric layer is disposed over an outer surface of the sleeve, and a resistive element layer is disposed over the first dielectric layer, wherein the resistive element layer defines a resistive circuit pattern that is preferably formed by a laser trimming process. A pair of terminal leads are secured to a portion of the resistive element layer thus defining a termination area, and the termination area is positioned proximate the slot and away from the proximal end and the distal end of the sleeve. A second dielectric layer is disposed over the resistive element layer but not over the termination area, a third dielectric layer is disposed over the termination area, and a protective layer disposed over the second dielectric layer and the third dielectric layer.

Hot runner nozzle heater and methods of manufacture thereof

A hot runner nozzle heater is provided that includes a sleeve defining a slot extending along a length of the sleeve. A first dielectric layer is disposed over an outer surface of the sleeve, and a resistive element layer is disposed over the first dielectric layer, wherein the resistive element layer defines a resistive circuit pattern that is preferably formed by a laser trimming process. A pair of terminal leads are secured to a portion of the resistive element layer thus defining a termination area, and the termination area is positioned proximate the slot and away from the proximal end and the distal end of the sleeve. A second dielectric layer is disposed over the resistive element layer but not over the termination area, a third dielectric layer is disposed over the termination area, and a protective layer disposed over the second dielectric layer and the third dielectric layer.

Hot runner nozzle heater and methods of manufacture thereof

A hot runner nozzle heater is provided that includes a sleeve defining a slot extending along a length of the sleeve. A first dielectric layer is disposed over an outer surface of the sleeve, and a resistive element layer is disposed over the first dielectric layer, wherein the resistive element layer defines a resistive circuit pattern that is preferably formed by a laser trimming process. A pair of terminal leads are secured to a portion of the resistive element layer thus defining a termination area, and the termination area is positioned proximate the slot and away from the proximal end and the distal end of the sleeve. A second dielectric layer is disposed over the resistive element layer but not over the termination area, a third dielectric layer is disposed over the termination area, and a protective layer disposed over the second dielectric layer and the third dielectric layer.