A welder for joining two polymeric sheets together using a wedged heating element allows for a heating profile on opposite faces of the heating element to be varied by controlling where each of the polymeric sheets contacts the corresponding face.

A flow path sealing structure according to at least one embodiment of the present disclosure, which is disposed on a way of a flow path formed by fusion bonding a pair of resin sheets that are superimposed on each other, includes a widened portion surrounded by a widened seal portion formed by fusion bonding together the pair of resin sheets around a periphery thereof, and one end and another end of which are in communication with the flow path, together with being formed to be wider than the flow path, and a weakly sealed portion formed to extend in a widthwise direction in the widened portion, and which partitions the widened portion in a liquid-tight and airtight manner into the one end and the other end, together with being capable of being opened by increasing an internal pressure of the widened portion.

A system and method for welding thermoplastic components by positioning and moving a heated plate between the components to melt their respective faying surfaces, and as the plate moves, pressing the components together so that the melted faying surfaces bond together as they cool and re-solidify, thereby creating a composite structure. The plate has a heated portion which is positioned between and heated to melt a portion of the first and second faying surfaces. A manipulator mechanism moves the plate along an interface from between the portion to between a series of subsequent portions of the first and second faying surfaces, thereby welding the thermoplastic components along the entire interface to create the composite structure. An injection device may also move behind the plate and reciprocally inject a polymer between the first and second faying surfaces to provide toughness and crack arresting properties.

An edge-banding apparatus is provided and configured to apply an edging strip having a heat activated layer to a substrate or work piece. The apparatus uses localized heat generated from a controlled flame from combustible fuel to apply heat to the edging strip to active the heat activated layer.

A system and method for welding thermoplastic components by positioning and moving a heated plate between the components to melt their respective faying surfaces, and as the plate moves, pressing the components together so that the melted faying surfaces bond together as they cool and re-solidify, thereby creating a composite structure. The plate has a heated portion which is positioned between and heated to melt a portion of the first and second faying surfaces. A manipulator mechanism moves the plate along an interface from between the portion to between a series of subsequent portions of the first and second faying surfaces, thereby welding the thermoplastic components along the entire interface to create the composite structure. The heated portion may contact the faying surfaces and melt them through conduction, or may be suspended between them and melt them through radiation and convection.

Embodiments herein include a system for joining components. The system can include a rotating base platform, a plurality of receptacles mounted to the base platform, and a rotating sonotrode platform. A plurality of sonotrodes are mounted to the sonotrode platform. Each sonotrode can correspond to a receptacle. Each sonotrode can move in a reciprocating motion between a release position distant from a corresponding receptacle and a compressing position proximal to the corresponding receptacle. The compressing position occurs at a first angular position of the sonotrode platform. Each sonotrode is energized at the compressing position.

Packaging apparatus comprises two counter-rotatable sealing dies for pressing together two tissue webs to produce pockets for containing a substance for preparing beverages and to seal around said pockets, and two heating drums for heating the sealing dies and each being positioned inside a respective sealing die, wherein a first heating zone of each heating drum comprises a first plurality of circumferentially distributed infrared heating elements, and a second heating zone of each heating drum comprises a second plurality of circumferentially distributed infrared heating elements.

A thermoplastic plastic nut includes a nut main section having a second thread to screw a first thread of a bolt; and a thin wall section weldable to the first thread and disposed to protrude upwardly from the nut main section. A material of the nut main section contains a thermoplastic resin and a material of the thin wall section contains the thermoplastic resin. Thus, a thermoplastic plastic nut, a nut welding device and a nut welding method are provided to make it possible to easily prevent the loosening of the nut.

A method and apparatus for sealing a plastic enclosure is provided. The apparatus includes a handle including elements pivotally coupled together at a first end. The apparatus also includes a heating element positioned along an inner surface of an element and connected to a power source where a longitudinal axis of the heating element is oriented parallel with a longitudinal axis of the element. Plastic material including first and second plastic layers is positioned at an interface between the second elements. Upon pivoting the first elements from an open position to a closed position the heating element increases a temperature at the interface to melt the plastic material and form a seal between the first and second plastic layers.

Systems and methods of controlling outputs of infrared heaters used to join a first part to a second part, and a component made thereby. Upper and lower nests hold the first and second parts, respectively. A movable heating platen has infrared heaters on opposite surfaces. Imaging sensors have fields of view encompassing heated portions of the first and second parts, respectively, when the platen is retracted away from an area between the upper and lower nests. A controller causes the upper and lower nests to move while causing the platen to extend into and retract away from the area between the upper and lower nests. The first imaging sensor takes a first image of the heated portions of the first part, which causes an adjustment to be made to an output of the infrared heaters in a subsequent welding cycle.