martino communications
about the agency
client portraits
client list


home > news > details


Xaloy® LSR Package from Nordson Includes All Components for Controlled Mixing and Metering of Liquid Thermoset Rubber Ingredients and Resistance to Corrosion or Wear

NEW CASTLE, PA, U.S.A., April 13, 2016: Nordson Corporation has developed a complete injection-unit package for liquid silicone rubber (LSR) molding that meets the special mixing and metering requirements of low-viscosity thermoset ingredients and can be readily retrofitted on standard injection molding machines. The company will introduce the package at Chinaplas 2016 (Stand W2-J31).

The Xaloy® LSR Package includes a specially designed screw, barrel, seal, valve, and nozzle, along with other components where needed, such as a feed-pipe adapter. Nordson recommends the package for manufacturers of seals, gaskets, cushioning pads, medical devices, infant feeding items, ruggedized electronic devices, and such kitchenware as baking pans and spatulas.

As a specialist in the engineering and manufacture of injection-unit components, Nordson can develop customized packages to meet specific customer requirements, according to Mark Colella, global product manager for the Xaloy brand.

“The low-viscosity liquid ingredients for LSR pose a very different set of mixing and metering requirements from those of thermoplastics, and their temperatures must be maintained below the curing point until homogenized material reaches the mold cavity,” said Mr. Colella. “Our LSR Package addresses these unique challenges yet can be retrofitted on a standard injection molding machine in what amounts to a bolt-on conversion.”

The components of the Xaloy LSR Package are:

---Screw. A single-flight, wear-resistant, 12:1 to 14:1 L/D screw is designed to provide optimum homogenization of catalyst and crosslinking agents without increasing the temperature of the compound.

---Barrel. With a feed port moved downstream and two welded cooling jackets, the barrel is designed for a low L/D ratio and provides the intensive cooling required to hold the LSR compound below crosslinking temperature. The Xaloy X-800® barrel inlay is a nickel-based alloy with tungsten carbide, providing the abrasion and corrosion resistance posed by certain LSR compounds.

---Rear seal. This is installed on the barrel or as a seal ring on the screw shank.

---Valve. An Xaloy spring-loaded valve ensures immediate shutoff with low-viscosity LSR compounds.

---Shutoff nozzle. This component is provided by a partner company that is a longtime supplier to the LSR industry.


Nordson Corporation engineers, manufactures and markets differentiated products and systems used for the precision dispensing of adhesives, coatings, sealants, biomaterials, polymers, plastics and other materials, fluid management, test and inspection, UV curing and plasma surface treatment, all supported by application expertise and direct global sales and service. Nordson serves a wide variety of consumer non-durable, durable and technology end markets including packaging, nonwovens, electronics, medical, appliances, energy, transportation, construction, and general product assembly and finishing. Founded in 1954 and headquartered in Westlake, Ohio, the company has operations and support offices in more than 30 countries. Visit Nordson on the web at, @Nordson_Corp, or

Nordson Polymer Processing Systems provides customers with engineered components to melt, homogenize, filter, meter, and give shape to plastic and fluid coating materials. Nordson Corporation leverages the collective plastics industry experience from a series of strategic acquisitions to offer a uniquely broad portfolio of industry-leading technologies. Nordson delivers a full range of precision melt stream products — from screws and barrels for extrusion and injection molding — to filtration systems, pumps, and valves — to the extrusion dies and pelletizing systems to meet the constantly evolving needs of the polymer industry.

Nordson Corporation provides customers with local technical sales, service and remanufacturing capabilities through sales organizations and regional manufacturing facilities in over 30 countries. To learn more visit us at or