Dynisco unveils accurate, direct pressure sensor

By Bill Bregar
Senior Staff Reporter

Published: January 18, 2013 9:29 am ET
Updated: January 18, 2013 10:33 am ET

Related to this story

Topics Extrusion, Extrusion dies/tooling

FRANKLIN, MASS. -- Dynisco LLC is taking the direct approach with the new Vertex sensor, which measures melt pressure in extrusion directly, with no mercury or other liquid-fill materials, or complicated mechanical push rods.

After 10 years of development, the result is a robust pressure sensor that measures pressure more accurately, with a faster response, than traditional sensors, according to Dynisco officials.

"If you get rid of the fill materials, you have a more direct measurement. It's more accurate and more reliable," said Matthew Carrara, vice president and general manager.

Patents are pending on the capacitance technology. Melt pressure is registered directly through a single diaphragm, which is six times thicker than those on other sensors. It is made of Inconel 718 allow and coated with Dynisco's diamond-hardened DyMax, for extra protection against abrasion and corrosion.

Dynisco of Franklin is offering a longer, four-year warranty for the unit.

With Vertex,Carrarasaid, Dynisco has approached the "holy grail" of melt sensors, sensitive instruments that have to be sturdy to withstand high temperatures, pressures and other stresses in extrusion.

"I would argue that it would be the most perfect sensor on the market," Cararra said. "It addresses all the concerns of people in the market."

Mike Davis, senior product manager said representatives from every department at Dynisco participated in developing Vertex. Taking a consultative approach, they asked customers what they wanted in a sensor. A five-person team, from engineering, sales, operations engineering and marketing, worked on functionality of the sensor, and also manufacturing, marketing, sales and service.

"The entire way that this was developed internally was totally different,"Davissaid.

As a result, the new design cuts lead times from up to 14 weeks to fewer than 14 days. Vertex is designed to be a drop-in replacement for existing sensors. The new sensor can handle temperatures as high as 660°F.

Located along the barrel, melt pump and screen changer, the melt pressure sensors play a key role in consistency, throughout, quality and safety. The tip is exposed to the molten plastic, and traditionally, mercury has been placed between the sensing diaphragm and the sensitive electronics, to protect them from the heat. To replace mercury, sensor manufacturers have used other fill materials, such as sodium-potassium, oil and gallium. But mercury is still commonly used, Dynisco officials said, adding that Vertex shows that a fill medium, which results in an indirect measurement, is not needed.


Comments

Dynisco unveils accurate, direct pressure sensor

By Bill Bregar
Senior Staff Reporter

Published: January 18, 2013 9:29 am ET
Updated: January 18, 2013 10:33 am ET

Post Your Comments


Back to story


More stories

Image

Cascade Engineering founder Keller to step down as CEO

September 16, 2014 8:33 pm ET

Cascade Engineering Inc. is undergoing a transition as President Mark Miller will also add the role of CEO, replacing founder Fred Keller, who has...    More

Image

DuPont investing $100 million for more ethylene copolymer capacity

September 16, 2014 1:51 pm ET

Increased packaging demand is leading materials giant DuPont Co. to spend more than $100 million to increase capacity for ethylene copolymers at its...    More

Image

Heineken swapping out plastic for wood for its pallets in Mexico

September 16, 2014 4:35 pm ET

Dutch brewer Heineken NV is to replace all its wooden pallets in Mexico with a high impact-resistant plastic pallet, co-designed and produced by...    More

Image

SPE Thermoforming Division picks 3 scholarship winners

September 16, 2014 4:25 pm ET

Three college students have earned scholarships through the Society of Plastics Engineers' Thermoforming Division, division officials announced at...    More

Image

Canadian, Mexican injection molders form auto supply joint venture

September 16, 2014 2:26 pm ET

A new automotive parts manufacturer will open in Querétaro, Mexico, through a joint venture between Canadian automotive supplier Papp Plastics and Dis...    More

Market Reports

Shale Gas Market - Analysis of North American Region

This report highlights the impact of shale-based natural gas on the North American plastics market and features an in-depth analysis of production trends in the United States during 2013 and a forecast for 2014 and beyond.

Learn more

Thermoformed Packaging 2014 Market Review & Outlook – North America

This in-depth report analyzes economic and market trends, legislative/regulatory activity impacting supply and demand, business opportunities and threats, materials pricing, manufacturing technology, as well as growth strategies being implemented by thermoformed packaging companies.

Learn more

Pipe, Profile & Tubing Extrusion in North America 2014

U.S. demand for extruded plastics is expected to grow by 3 percent in 2014, with PVC remaining the largest segment.

Plastic pipe will post the strongest gains through 2018, continuing to take market share from competing materials in a range of markets.

Our latest market report provides in-depth analysis of current trends and their financial impact on the pipe, profile and tubing extrusion industry in North America.

Learn more

Upcoming Plastics News Events

January 14, 2015 - January 14, 2015Plastics in Automotive

February 4, 2015 - February 6, 2015Plastics News Executive Forum 2015

More Events