摘要:
A method for manufacturing components includes joining a first edge of a thermoplastic-containing first component part and a second edge of a thermoplastic-containing second component part to one another without any overlap. The first and the second edge are interconnected by friction stir welding. Friction stir welding involves rubbing a rotating friction stir welding pin against at least one metal object.
摘要:
A hollow structure for a face mask includes an inner wall, an outer wall spaced from the inner wall to define a hollow area between the inner wall and the outer wall, and a bottom wall that couples the inner wall to the outer wall. A first portion and a second portion together define a closable opening into the hollow area. The second portion is coupled to the outer wall by a bi-stable membrane that allows the second portion to move between (1) a first, opened position in which the second portion is spaced from the first portion to allow access to the hollow area through the opening, and (2) a second, closed position in which the second position abuts the first portion to close the opening.
摘要:
A product wrapping machine with a plurality of counter-jaws homogenously distributed in a forward movement direction (X), a plurality of jaws moving perpendicular to the forward movement direction (X) from an open position to a closed position against the counter-jaws for sealing together the films wrapping the product to one another and cutting them. The machine also includes a jaw actuator for each jaw causing the corresponding jaw to move in the closing direction. The jaws move together simultaneously in the forward movement direction (X) and move independently from one another in the closing direction. The machine further includes a tensioner suitable for collecting part of the film wrapping the product when a jaw leaves the closed position.
摘要:
A coupled portion of mutual laminate films sufficiently contributes to the formation of a packaging bag in that the coupled portion itself has excellent airtightness and liquid tightness. The tensile strength required for the laminate film is given to the coupled portion, whereby a temporary stop of a packaging apparatus is useless when a connecting portion of the laminate film is passed through the apparatus, thereby enhancing the operation efficiency and improving the yield of the material. Oriented base film layers are joined in a miter form at the coupled portion between a rear end portion and a front end portion of laminate films comprising oriented base film layers and sealant layers.
摘要:
A machine to cover articles (50) with flexible plastic material sheets (51, 52) is described. The machine comprises an assembly for heat-sealing and cutting the sheets (51, 52) which cooperates with a work surface (1). The assembly comprises a first (11) and a second (12) element, of which at least the first element (11) is movable with respect to the other, and the two elements being arranged on opposite sides of the work surface (1). The first element (11) comprises a cutting and sealing blade (11) having an electric current which passes through it and the second element (12) comprising a cutting and sealing counter blade (12). Operation means (7, 8) being provided to move the cutting and sealing blade (11) from a rest position to a work position where the cutting and sealing blade (11) engages said cutting and sealing counter blade (12). The first element (11) and the operation means (7, 8) belong to a unit (2) connected to the work surface (1) in a removable manner. The unit (2) comprises also elastic means (3, 4) for holding said blade (11) at rest position.
摘要:
An apparatus for manufacturing cleaning pads is provided including a base, a pair of supply plates mounted over the base, a supporting plate protruded from an end of the supply plate, a lifting plate located on both sides of the supporting plate, an ultrasonic horn with a groove formed in a bottom being vertically movable located over the supporting plate and driven by an ultrasonic oscillator, an actuator mounted on both sides of the ultrasonic horn to help the ultrasonic horn separate from the cleaning pad, a moving body located under the supporting plate and being movable along a guide rail, a rotary blade mounted on an upper end of the moving body, an air cylinder for moving the moving body, and an inhaler to draw off broken pieces of the cleaning pad, wherein the actuator includes a case mounted on a side of the ultrasonic horn, a press member being vertically slidable in the case, a bottom of which is movable lower than that of the ultrasonic horn, and a spring located in the case to downwardly compress the press member.
摘要:
A method and apparatus for sealing and closing an end of a sleeve, more particularly an apparatus and method for bag making, filling, and packaging for intermittently delivering a packaging film of a predetermined length, while forming the film into a tubular shape by a bag making cylindrical body; filling the tubular packaging film with a material to be packaged; and clamping the tubular film by closing a pair of opposed sealing devices to heat seal the tubular film. Apparatus is provided for cooling the heat sealed end of the tubular film by a device which is independent of the sealing device. The heat sealed end of the tubular sleeve is positioned and directly engaged by the cooling members which serves to shorten the cooling time, yet provides an improved seal with an improved appearance.
摘要:
A welding tip configuration for ultrasonically welding thermoplastic material includes a plate with conical projections extending from a planar surface thereof and reservoirs recessed below the planar surface and spaced from the projections. The reservoirs facilitate the displacement of molten material away from the conical projections.
摘要:
Opposed strips of heat-sealable thermoplastic strips are advanced along a path past a pouch-forming and incomplete cut-out zone, a filling zone and a pouch-sealing and cut-off zone. Each incompletely cut-out pouch has a spout whose open end extends to opposed marginal bands of the strips. Nozzles are projected into the spouts at the filling zone. A tight fit of the nozzles in the spouts prevents escape of fluid around the nozzles during the filling operation. The marginal bands of the strips are gripped adjacent each spout to enable the nozzles to be pushed into the spouts. The filled pouches settle onto a conveyor while the marginal bands hold the open ends of the spouts at a higher level, preventing discharge of fluid from the spouts until the filled pouches are sealed. Sufficient height of the spout opening above the mean level of the filled body of each pouch tends to form a discharge-blocking pinch across the spout, and a still-higher level of the spout opening prevents the discharge of fluid by gravity. Filling nozzles extend in opposite directions toward the centerline of the strips for insertion into oppositely directed spouts where the pouches are formed at successive positions along the strips and each slender spout lies between the bodies of neighboring pouches. Multiple pouches can be formed simultaneously by multiple seam-forming and cut-out reciprocating dies. Composite cut-out dies and seam-forming dies are heated to relatively high and lower temperatures, respectively, and the dies press the theremoplastic strips against a heat-resistant rubbery platen.
摘要:
Methods and apparatus for forming a water tight seam useful in the production of water beds or water tight envelopes from flexible thermoplastic sheet material. A pair of thermoplastic sheets are thermally bonded to each other by a continuous first seam integrally joining the peripheral edges of the two sheets to each other to form a closed envelope. An elongate strip or band of thermoplastic sheet material is then thermally bonded to the joined sheets in overlying relationship to the first peripheral seam. The strip or band is automatically applied by a machine having a stationary head which is inserted into the interior of the closed envelope through a slit cut in one of the joined sheets for this purpose. A moveable head on the machine is then lowered into an operative position in which the joined sheets are clamped between drive rolls mounted in the two heads, the peripheral first seam joining the two sheets extending between the two heads in a direction normal to the axis of the drive rolls. The peripheral first seam cooperates with guiding mechanism mounted on the heads to assist in guiding the envelope as the first seam is progressively advanced through the heads by operation of the drive rolls. The strip or band is concurrently fed through the heads at the same time and is thermally bonded to the exterior of the envelope by means of heat supplied by a hot air gun and compression applied by cooperating drive rolls. One of the cooperating drive rolls is formed in a manner such that the strips or sheets are compressed in a pattern such that the thermal bond is mechanically sound and water tight, the uncompressed portions accommodating shifting of the material during the sealing process to minimize wrinkling of the seams.