摘要:
The invention relates to a container having a tubular or pipe-shaped sleeve which is closed relative to the surrounding atmosphere and has a weld seam on at least one end. In order to control the seal of the container, the inner pressure in the interior of the container is increased by an external influence, and the weld seam deformation which is thereby produced is detected. The weld seam is clamped between clamping elements solely in a weld seam surface sub-region, which is spaced from the weld seam end facing the interior, prior to increasing the inner pressure.
摘要:
A gas pressure testing device, which is for checking pressure of gas inside the gas compartment portion of a bag, including: a pressing member (31) disposed on one side of the bag, a receiving member (38) positioned on another side of the bag, and a movable support member (39) having thereon the pressing member and a distance sensor (32). The pressing member being kept urged toward the gas compartment portion by air cylinder (44) is moved toward the bag so that the gas compartment portion is sandwiched by the pressing member and the receiving member. The distance sensor measures the distance (D) at such time to the pressing member and sends a distance signal to a control unit (37). Based on the distance signal, the control unit determines whether or not the gas pressure in the gas compartment portion is within a preset range.
摘要:
The invention relates to methods for inspecting objects fed in a continuous flow (4), in particular packages (2) or components, wherein an inspecting body is guided along an inspection segment (7) together with an object and a response to an inspection of the object is detected by means of a sensor (10) in order to determine if the object meets a quality criterion, in particular is tight or leaky or true to size or functional. The invention further relates to corresponding devices (1, 27, 36, 44).
摘要:
The invention provides an in-line leak tester apparatus for detecting leaks in packages having a flexible cover such as contact lens packages. The flexible covers move in contact with an electromechanical switch when the atmospheric pressure surrounding the package is lowered.
摘要:
The invention refers to the field of processes and apparata for checking seal or tightness of packages of products packaged in flexible or semi-rigid cases. The process is based on the detection of the vacuum degree being present in a chamber in which the product to be tested is placed in two consecutive times after the internal packaging pressure has reached a preset value. The device provides a tight-sealed chamber in which the package to be tested is placed and that is able to be connected to a vacuum system through a valve adapted to keep the internal packaging pressure constant by making the sealed chamber vacuum adequate. A measuring device is provided for the vacuum degree inside the chamber, and a first measure occurs upon reaching a prefixed inside packaging pressure, and a second measure occurs after a certain interval of time.
摘要:
Method and apparatus for leak testing a closed container with at least one flexible wall area. A biasing member is moved towards and onto the flexible wall area in order to apply a predetermined force and the reaction forces are monitored over time.
摘要:
The invention relates to a device for checking for tightness a closure or a connecting weld provided in a flexible fluid-filled hose, which device comprises two clamping members slidable relative to each other, forming in an inserted position a profile with at least one clamping space and an expansion space, as well as folding means, the arrangement being such that at least one hose portion can be folded and clamped in the at least one clamping space, so that the fluid present in the at least one hose portion is pressed to another hose portion including the closure or connecting weld to be checked, which other hose portion can expand in the expansion space.
摘要:
There is disclosed a method for inspecting leakage of a sealed container which is effectively used for detecting a leaking place such as a pin hole, crack, etc. of a sealed container (2) which contains foods, pharmaceuticals, chemical industrial products, etc. A method for inspecting leakage of a sealed container (2) according to the present invention comprises changing an internal pressure of a vacuum chamber (1) provided therein with an eddy-current displacement sensor (9) to a predetermined degree of vacuum from a normal pressure after putting a sealed container (2) having a conductive material at least at a portion to be inspected in the chamber; detecting an amount of expansion of the sealed container (2) at the degree of vacuum in time sequence by the eddy-current displacement sensor (9); and determining any aging change in the amount of expansion after a time when the detected amount of expansion shows the maximum value, thereby to find out any pin hole formed in the sealed container.
摘要:
A method and apparatus for testing flexible sealed packages (10) of the type wherein the package is at least partially made of a flexible, electrically conductive foil or metallic laminate (10) wherein the capacitance between the flexible, conductive foil or metallic laminate (16) of the package and a fixed electrode (30) is measured when the package (10) is subjected externally to a partial vacuum. The apparatus includes an evacuable chamber (20) adapted to support a package (10) under test therewithin so that at least part of the flexible foil or metallic laminate portion (16) of the package lies opposite said fixed electrode (30) and a means (31) for monitoring the capacitance between the electrode (30) and that part of the foil or metallic laminate (16) when the chamber (20) is evacuated.