A bonding method for bonding an adherend with a high-frequency dielectric heating adhesive sheet is provided. The adherend includes a fluorine-containing surface at least containing fluorine on a surface thereof. The high-frequency dielectric heating adhesive sheet includes a high-frequency dielectric adhesive layer including a thermoplastic resin and a dielectric filler. A surface free energy of the high-frequency dielectric adhesive layer is in a range from 15 mJ/m.sup.2 to 30 mJ/m.sup.2. A melting point of the high-frequency dielectric adhesive layer is in a range from 110 degrees C. to 300 degrees C. The bonding method includes bringing the fluorine-containing surface of the adherend into contact with the high-frequency dielectric adhesive layer and applying a high-frequency wave to the high-frequency dielectric adhesive layer to bond the high-frequency dielectric heating adhesive sheet to the fluorine-containing surface.

A control circuitry (11) comprises an adjustable capacitor (C1), and a bias source (111) configured to apply a bias voltage (V2) to said adjustable capacitor (C1) to adjust a capacitance value of the adjustable capacitor (C1). Such a control circuitry may for example be part of a sealing device (1) to seal a medical tubing (2), the sealing device (1) comprising a receptacle (100) to receive said medical tubing (2), the receptacle (100) comprising an electrode arrangement for causing a heat action on the tubing (2).

A vibration measurement device measures vibration of at least one of the first sealing member and the second sealing member. A determination device determines quality of the sealing process according to a measurement result of the vibration measurement device from before the first sealing member and the second sealing member reach the closed position to after the first sealing member and the second sealing member reach the closed position. The sealing drive unit causes relative movement between the first sealing member and the second sealing member from an open position at a moving speed determined according to a type of the bag, to place the first sealing member and the second sealing member in the closed position.

A method is described for opening a heat bonded sterile connection that includes a skin of material blocking flow between the connection site. The method includes applying external pressure to the connection site.

A method is described for opening a heat bonded sterile connection that includes a skin of material blocking flow between the connection site. The method includes applying external pressure to the connection site.

Disclosed are embodiments of a versatile storage bag and methods of making same. The versatile storage bag may have first and second sidewalls, a double-locking closure mechanism with a first closure element extending along the first sidewall and a second closure element extending along the second sidewall, each closure element having a channel and an elongated member configured for interlocking with one another. A double-seal along three sides of the first sidewall and the second sidewall form a gusset between two seals, leaving an opening through the double-locking closure mechanism. Corner seals may be formed at the corners of the first and second sidewalls, further reinforcing the double-locking closure mechanism for an airtight and hence waterproof seal. The versatile storage bag may be made of a food-grade polyethylene vinyl acetate blend, approximately 90% or less ethylene vinyl acetate and approximately 10% or less polyethylene.

A method of creating a weld between a liner of a section of lined pipe and an electrofusion fitting. The fitting comprises at least one heating element, which is suitably disposed on or in an outer surface of the electrofusion fitting and is electrically isolated from an inner surface of the fitting. The method comprises locating an end of the electrofusion fitting within an end of the section of lined pipe, locating an induction coil within a bore of the electrofusion fitting in the vicinity of the at least one heating element, and supplying electrical power to the induction coil to energise the at least one heating element by electromagnetic induction.

A method of creating a weld between a liner of a section of lined pipe and an electrofusion fitting. The fitting comprises at least one heating element, which is suitably disposed on or in an outer surface of the electrofusion fitting and is electrically isolated from an inner surface of the fitting. The method comprises locating an end of the electrofusion fitting within an end of the section of lined pipe, locating an induction coil within a bore of the electrofusion fitting in the vicinity of the at least one heating element, and supplying electrical power to the induction coil to energise the at least one heating element by electromagnetic induction.

Proposed is an apparatus for manufacturing a hair cap. A rubber band mounting unit is formed on one side of the top surface of the workbench. A rubber band conveying unit is formed on the top surface of the workbench and grips the expanded rubber band. A nonwoven fabric cutting unit is formed on the other side of the top surface of the workbench to cut a nonwoven fabric. A nonwoven fabric fusing unit couples the rubber band, conveyed by the rubber band conveying unit, to the nonwoven fabric. A driving unit makes the rubber band conveying unit reciprocate to the rubber band mounting unit or the nonwoven fabric fusing unit. A collecting unit grips and collects the fused hair cap. Processes for placing the rubber band on the peripheral edge of the nonwoven fabric and bonding same are performed rapidly in succession.

A primer-attached thermoplastic resin material having a thermoplastic resin material and one or plural primer layers laminated on the thermoplastic resin material, wherein at least one layer of the primer layers is a layer derived from a film.