摘要:
A method for reliably attaching a liquid-repellent filter to an air vent of a resin molded article in which an electronic part or any other component is accommodated, and a thermally processing tip and a thermally welding tip used in the method as well as a molded article are provided. A thermally processing tip 22 is used to form a filter attachment surface 14, onto which a filter 18 is dropped, at the inlet or outlet of an air vent 16 formed in a thermoplastic resin molded article 13, and a filter fixing rib 15 is formed around the attachment surface 14. The porous filter 18 is then dropped onto the filter attachment surface 14, and a thermally welding tip 2 is used to melt the filter fixing rib 15 in such a way that the melted resin is caused to flow onto and cover a circumferential edge portion of the filter 18 and penetrate the body of the filter 18. Thereafter, the melted resin penetrating the filter 18 and the melted resin covering the circumferential edge portion of the filter 18 are so cooled as to solidify, whereby the filter 18 is fixed to the filter attachment surface 14.
摘要:
A machine converts a web of preformed pouches, which are defined by transverse seals extending from a remote edge, into inflated dunnage units. A sealing arrangement is positioned to provide a longitudinal seal intersecting the transverse seals to close the preformed pouches and form a dunnage unit. The sealing arrangement has at least two sealing belts. Each belt is positioned so that respective first sides engage a surface of the web and pull the web through sealing elements positioned on either side of the web. A heating element is on a second side of the first belt not engaging the web. A compliant material is on a second side of the second belt not engaging the web. As the web passes between the heating element and compliant material, imperfections in the web are smoothed by the compliant material and the layers of the web are sealed by the heating element.
摘要:
A welding device includes a compressor configured to compress a welding part and its adjoining surfaces of thermoplastic resin articles (2a, 2b) in directions perpendicular to the axis of a core (1), and a heater, and is configured such that: the surface of the welding part of the thermoplastic resin articles is compressed with a predetermined pressure by the compressor, the compression of the thermoplastic resin articles is then continued to extend a compressed region along the axis of the core without changing a relative position between the compressor in the compressed region and the surface of the welding part of the thermoplastic resin articles, the welding part of the thermoplastic resin articles is heated and welded by the heater, and after the welding, the pressure applied by the compressor is lowered to stop the compression of the thermoplastic resin articles such that the thermoplastic resin articles fitted on the core can be taken out of the welding device.
摘要:
A sealing machine adapted to support a plurality of different heating/sealing/cutting mechanisms, including tubular heaters and heated cutting blades, is disclosed. The sealing machine utilizes a common interface and mounting system for all side sealers. In addition, in some embodiments, the control system within the sealing machine is adapted to monitor and control the temperature of these various mechanisms automatically so as to create proper seals.
摘要:
Es wird eine Vorrichtung zum Walzensiegeln von Folien bereitgestellt mit einer Vorschubwalze (1) und einer auf diese mit einer Siegelkraft drückenden Siegelwalze (3), wobei eine Formfolie (4) und eine Deckfolie (5) zwischen der Siegelwalze (3) und der Vorschubwalze (1) hindurchführbar und zu einem versiegelten Folienverbund (6) versiegelbar sind, und einer Heizvorrichtung (7) zur Vorheizung der Deckfolie (5) vor dem Siegelvorgang, wobei die Heizvorrichtung (7) als berührungslose Induktionsheizeinrichtung ausgebildet ist und folgende Elemente aufweist: eine Mehrzahl von in Laufrichtung der Deckfolie (5) hintereinander angeordneten Spulen (14), deren Windungen im Wesentlichen in einer Ebene angeordnet sind, eine Mehrzahl von quer zur Laufrichtung der Deckfolie (5) angeordneten und mindestens einer der Spulen (14) gegenüber liegenden Magnetfeldbeeinflussungselementen (24), wobei zwischen der mindestens einen der Spulen (14) und den Magnetfeldbeeinflussungselementen (24) ein Durchtrittskanal für die Deckfolie (5) ausgebildet ist, wobei der Abstand der Magnetfeldbeeinflussungselemente (24) zu der mindestens einen der Spulen (14) jeweils über einen Stellantrieb (21) einstellbar ist, eine Mehrzahl von quer zur Laufrichtung der Deckfolie (5) und stromab der Magnetfeldbeeinflussungselemente (24) angeordneten Temperatursensoren (26) zur Erfassung des Temperaturprofils der Deckfolie (5), und eine Steuereinrichtung (13), die geeignet ist, auf Basis der Messwerte der Temperatursensoren (26) mittels Verändern des Abstands der einzelnen Magnetfeldbeeinflussungselemente (24) von der mindestens einen der Spulen (14) die Temperatur der Deckfolie (5) zu regeln.