摘要:
A vacuum and sealing appliance comprises a heat sealing element for sealing a container during a sealing cycle. A controller controls the temperature of the heat sealing element during the sealing cycle based on a signal from a temperature sensor that senses the real-time temperature of the heat sealing element. A seal indicator light is provided which is lighted during the sealing cycle and extinguished at its completion. The signal from the controller energizes the heating element for a time to heat the sealing element to a pre-determined temperature for sealing the container and initiates a dwell time corresponding to cooling the heating element after sealing the container. Values of the real-time temperatures of the heat sealing element and values of the sealing times and the dwell times that correspond to the values of the real-time temperatures of the heat sealing element are stored in a look-up table.
摘要:
A wide sheet of highly oriented ultra high molecular weight polyethylene comprising a plurality of strips of highly oriented ultra high molecular weight polyethylene partially overlapped or abutted longitudinally to define joints between adjoining strips wherein the thickness of the joint is less than about 80% of the thickness of the sum of the thicknesses of the adjoining strips that make up the joint. A continuous method for the production of such materials comprising subjecting longitudinally overlapping or abutted strips of these materials to temperatures below the melting point of the UHMWPE and pressures over 300 pli is also disclosed.
摘要:
Electromagnetic induction welding of plastic pipe distribution systems including inter alia induction weldable pipe connectors each having at least one induction weldable pipe socket. The induction weldable pipe sockets include a solid metal susceptor sleeve enveloping a plastic solder lining. Electromagnetic induction coil assemblies for clamping on induction weldable pipe sockets.
摘要:
Method and device for connecting two ends of tubular foil (308, 309) by means of adhesive tape (250, 270) comprising, supplying a first end of a flattened tubular foil, providing a second end of tubular foil, dispensing tape on a tape receiving surface of a tape applicator (103, 104), holding the tape on the tape receiving surface, applying the tape to and connecting the first and second end of the tubular foil, and releasing the tape, wherein the method comprises opening the first end of the flattened tubular foil by applying tape held on the tape receiving surface to the first end of flattened tubular foil and subsequently holding the one end of tubular foil opened by the tape applied to that end.
摘要:
In an apparatus for successively making plastic bags, a receiver plate (5) fixed to a support plate (7). The support plate (7) extends widthwise of the webs of film material (2H) and (2L) to protrude on one of opposite sides of the webs of film material (2H) and (2L). An elastic support device is disposed on the one side of the webs of film material (2H) and (2L) to elastically support the receiver plate (5) and the support plate (7). An attitude hold device is disposed on the one side of the webs of film material (2H) and (2L) to act on the support plate (7) so that the receiver plate (5) and the support plate (7) are held in attitude not to be inclined when being lowered and raised.
摘要:
An appliance (1) for sealing elastic hoses (2) with a sleeve (4), which is plastically deformable and slipped onto the hose, has two jaws (8, 9) which are movable towards and away from each other. One jaw (8) has two straight bars (11) which project towards the other jaw (9) and extend transversely of the sleeve (4) to make two transverse indentations (12) in the sleeve (4) and the hose (2) when the jaws (8, 9) are moving towards each other. The same jaw (8) has a cutting edge (15) which projects towards the other jaw (9) and is directed transversely of the sleeve (4), the cutting edge making a substantially transverse cutting indication (14) in the sleeve (4) and the hose (2) when the jaws (8, 9) are moving towards each other.