Jobs are in short supply, and yet some sectors have difficulty in finding suitable trainees for specialist tasks, such as polishing injection molds. The work is time-consuming and monotonous but requires highest levels of concentration, because any blemish in the mold can render it useless. A skilled worker may often need a whole week to polish a single metal mold. Up to now it has not been possible to use machines for this dreary work because they cannot get into the curved shapes.

Founded in 1967, Schnipke has established a reputation for building tools in-house and designing and engineering molds that meet the medical device industry's stringent requirements for precision at extremely tight tolerances, said the news release. The company claims on its website that it can mold within tolerances of +/-0.001 inches and as small as 0.02 grams in weight. Even smaller dimensions can be accommodated upon customer request.

In February, Atalys announced that it is tripling the size of its existing facility in the Dominican Republic from 15,000 to 47,000 square feet through the addition of a new 32,000-square-foot building. The company said that the new building will be dedicated to manual assembly with complementary injection molding, pad printing, tool repair, and warehousing. The existing facility will become the company's primary plastics processing site focused on cleanroom injection molding as well as secondary operations such as testing and packaging.

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In addition to its headquarters in Rochester, Atalys has manufacturing facilities in Asheboro, NC, and the Dominican Republic. The New York and North Carolina plants have multiple Class 8 cleanrooms for molding and assembly on site; the Santo Domingo site in the Dominican Republic offers cleanroom assembly and automation. The company said it adheres to scientific molding principles and is equipped with presses ranging in size from “near micro molding” to 1,400 tons.

The time gained by laser polishing and the cost saving achieved are enormous. Whereas a skilled polisher needs about 10 to 30 minutes for each square centimeter, the laser polishes the same area in about a minute. A prototype of the laser polishing machine developed by the scientists in cooperation with mechanical engineering firm Maschinenfabrik Arnold has already been built. Willenborg estimates that the system will be ready for industrial use in one to two years’ time. At the Euromold trade show, to be held from December 2 to 5 in Frankfurt, the researchers will be presenting examples of three-dimensional surfaces polished by laser.

Editor in chief of PlasticsToday since 2015, Norbert Sparrow has more than 30 years of editorial experience in business-to-business media. He studied journalism at the Centre Universitaire d'Etudes du Journalisme in Strasbourg, France, where he earned a master's degree.

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“We can set the melting depth by means of various parameters: the laser output, the speed at which the laser beam travels along the surface and the length of the laser pulses,” states Willenborg. Laser polishing does not achieve the same surface smoothness as perfect hand polishing - hand polishers can achieve a roughness Ra of 5 nanometers, the laser at present can only manage 50 nanometers - but Willenborg still sees considerable market potential for the system. “We will concentrate on automating the medium grades: a roughness of 50 nanometers is adequate for many applications, including the molds used for making standard plastic parts.” The high-end levels of smoothness will therefore remain the domain of skilled hand polishers.

"Our acquisition of Schnipke was driven by a focused strategy to deepen our capabilities, capacity, and technical superiority across the entire manufacturing process for medical device components,” said Vinc Ellerbrock, president and CEO of Atalys. “The addition of Schnipke adds two manufacturing sites for scalable growth, broadens our geographic presence and reach, enables us to serve a wider array of customers, and significantly augments our technical capabilities,” said Ellerbrock.

Schnipke has tooling and plastic injection molding operations at its headquarters in Ottoville, OH, and operates a second manufacturing facility in Tucson, AZ. The company is FDA registered and is certified to ISO 13485:2016.

Earlier this week, another medical injection molder made news when Total Molding Services announced that it has been acquired by Haartz Family Holdings, changing its name to Moldgenix in the process.

(PhysOrg.com) -- Polishing metal surfaces is a demanding but monotonous task, and it is difficult to find qualified young specialists. Polishing machines do not represent an adequate alternative because they cannot get to difficult parts of the surface. A new solution is provided by laser polishers.

Plastics injection molder Atalys LLC announced yesterday that it has acquired Schnipke Engraving Co. LLC. Both companies provide injection molding and related services to medical device OEMs. Atalys, based in Rochester, NY, said the acquisition will enhance its manufacturing capabilities, technology, and geographical footprint.

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Researchers at the Fraunhofer Institute for Laser Technology ILT in Aachen have developed a way of automating the polishing work: “We do not polish the surface by hand with grinding and polishing media. Instead we use a laser,” explains Dr.-Ing. Edgar Willenborg, group leader at the ILT. “The laser beam melts the surface to a depth of about 50 to 100 micrometers. Surface tension ensures that the liquid metal flows evenly and solidifies smoothly.” Like in conventional grinding and polishing, the process is repeated with increasing degrees of fineness. In the first stage the researchers melt the surface to a depth of about 100 micrometers, in further steps they gradually reduce the depth.

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