{"id":8062,"date":"2021-07-26T09:42:35","date_gmt":"2021-07-26T13:42:35","guid":{"rendered":"https:\/\/conairgroup73280.e.wpstage.net\/cn\/?post_type=news-item&p=8062"},"modified":"2025-06-02T13:30:12","modified_gmt":"2025-06-02T17:30:12","slug":"mdmwest-2021-medical-swab-tube-manufacturing","status":"publish","type":"news-item","link":"https:\/\/www.conairgroup.com\/cn\/about\/news-press\/news-item\/mdmwest-2021-medical-swab-tube-manufacturing\/","title":{"rendered":"Conair, Davis-Standard, and Zumbach Electronics Partner to Demonstrate Medical Swab Tube Manufacturing"},"content":{"rendered":"

At Plastec\/MD&M West 2021<\/a>, Conair Group is once again partnering with Davis-Standard<\/a> and Zumbach Electronics<\/a>, this time to demonstrate high-volume production of medical swab tubes used in COVID-19 test kits. After extrusion and cutting, these extruded polypropylene tubes are tipped with a flocked nylon swab head and used for collecting nasopharyngeal samples for COVID testing and other medical applications. The demonstration, held in Booth #4024, is among the highlights of the annual trade show being held at the Anaheim Convention Center, August 10-12.<\/p>\n

The long, very thin swab tubes (0.09 in. x 5.58 in.) begin as a continuous plastic tube produced from a \u00be\u201d Davis-Standard Medical Extruder. As the hot tube exits the extruder die, it passes through a water-filled pre-skinning tool, developed by Conair, which rapidly hardens the fragile extrudate before it enters a 5-ft-long Conair MedLine Model 235 vacuum cooling tank<\/a>. The tank\u2019s water temperature and vacuum level, managed by a PAVC+ vacuum control through a touchscreen HMI, create gentle pressure inside the warm extrudate, stabilizing tube dimensions as final cooling takes place. A ceramic air wipe assembly dries the product as it exits from the tank. (Like all Conair MedLine products, the Model 235 vacuum tank is based on a proven Conair design, but is specially sized, configured, documented and supported for use in cleanrooms and other controlled environments.)<\/p>\n

Just inches inside the vacuum cooling tank, QC measurements begin as the \u201chot\u201d tube passes through an immersed ultrasonic gauge supplied by Zumbach Electronics, which takes continuous wall-thickness measurements. Some six feet later, after the tube has exited the tank, a second Zumbach instrument \u2013 this time, a three-axis laser gauge \u2013 continuously measures and displays the OD, ID, and ovality of the now-cooled tube on a display screen. The data from these two instruments are used for two purposes. First, they provide closed-loop control of critical tube dimensions throughout the production run by regulating puller speed and cooling tank vacuum. Second, they feed QC and length data that is used by downstream equipment to identify and eliminate any out-of-spec product before it reaches the final collection point.<\/p>\n

After laser measurement, the extruded tube continues through a Conair MedLine\u00ae MD-L1-12-D puller\/cutter unit<\/a>, where dual belts (top and bottom) powered by a dual-servo, planetary-gear drive gently pull it forward at speeds precise to \u00b11\/100 percent of setpoints. Upon entering the cutter section, the tube passes through specially-lined stainless-steel bushings where a high-speed rotary knife automatically cuts it into finished swab lengths that fall onto a Conair MedLine 403 takeaway conveyor.<\/p>\n

A final product sort is made on the conveyor, using a QC mode available in the MedLine cutter control. This mode receives dimensional and length data from upstream instruments, then digitally \u201cmarks\u201d any out-of-spec tube sections using a length offset that enables the cutter to track their position on the line. Then, the cutter can be programmed to cut those sections differently or not at all, or to instruct downstream equipment to handle those sections differently. In this demonstration, the cutter control removes good tubes from the takeaway conveyor with a puff of compressed air, blowing them into a bin for collection. Out-of-spec parts are left to flow to the end of the conveyor for reprocessing.<\/p>\n

The tubing line is controlled by the Davis-Standard eVue Control System. This is a PLC-based controller with a touch screen HMI that communicates with the Conair and Zumbach equipment to control the entire line from one location.<\/p>\n

OTHER CONAIR AUXILIARIES ON DISPLAY<\/h3>\n

The demonstration of the cleanroom-ready MedLine vacuum tank, tooling, and puller\/cutter unit is supported by several additional Conair auxiliaries:<\/p>\n

The polypropylene resin for the swab tubes is drawn directly from machine-side storage and fed to the extruder feed hopper by a Conair AL-2 Access Loader<\/a>. This self-contained unit is equipped with an angled stainless-steel canister and its own vacuum motor, which can deliver up to 100 lbs\/hr to the extruder\u2019s feed hopper. The loader\u2019s straight-through tubular body ensures smooth resin flow, even in low quantities.<\/p>\n

Tempered water used in the pre-skinning tooling and vacuum cooling tank is provided by a single Conair TW-P temperature control unit. This TCU, representing the top end of Conair\u2019s Thermolator product line, is equipped with a premium digital HMI, solid-state relays, and a modulating cooling valve.<\/p>\n

When the TCU requires chilled water to maintain a precise cooling temperature, it is provided by a two-ton Conair EP2A portable chiller<\/a>, which features a nonferrous internal components (evaporator, pump, reservoir and piping) for long-lasting corrosion resistance. This chiller has a compact footprint with easy-to-access interior, and a touchscreen HMI control that provides precise temperature control along with extensive diagnostics.<\/p>\n

The Conair Group<\/a> is a leading global supplier of auxiliary equipment for plastics processors, including resin drying systems, blenders, feeders and material-conveying systems, temperature-control equipment and granulators. Extrusion solutions include line-control systems, film and sheet scrap-reclaim systems and downstream equipment for pipe and profile extrusion. Over 450 individual products solve problems, save energy, cut waste and are easy to use. Conair is also an international company, with long-standing operations in Europe, Asia and Latin America. The industry\u2019s most complete product line, top-flight engineering and unbeatable service, all combine to give processors the confidence they need to succeed in today\u2019s competitive global marketplace.<\/em><\/p>\n","protected":false},"excerpt":{"rendered":"

At Plastec\/MD&M West 2021, Conair Group is once again partnering with Davis-Standard and Zumbach Electronics, this time to demonstrate high-volume…<\/p>\n","protected":false},"featured_media":0,"template":"","news-type":[34],"class_list":["post-8062","news-item","type-news-item","status-publish","hentry","news-category-product-news","news-type-news"],"acf":[],"publish_date":"July 26, 2021","is_external_link":"","external_link":"","terms":{"news-category":[{"term_id":150,"name":"Product News","slug":"product-news","term_group":0,"term_taxonomy_id":150,"taxonomy":"news-category","description":"","parent":0,"count":54,"filter":"raw"}],"news-type":[{"term_id":34,"name":"News","slug":"news","term_group":0,"term_taxonomy_id":34,"taxonomy":"news-type","description":"","parent":0,"count":54,"filter":"raw"}]},"yoast_head":"\nConair, Davis-Standard, and Zumbach Electronics Partner to Demonstrate Medical Swab Tube Manufacturing - Conair Chinese<\/title>\n<meta name=\"description\" content=\"At Plastec\/MD&M West 2021, Conair Group is partnering with Davis-Standard and Zumbach Electronics to demonstrate high-volume production of medical swab tubes used in COVID-19 test kits.\" \/>\n<meta name=\"robots\" content=\"noindex, follow\" \/>\n<meta property=\"og:locale\" content=\"zh_CN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Conair, Davis-Standard, and Zumbach Electronics Partner to Demonstrate Medical Swab Tube Manufacturing - 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