Friction can turn medical products into failures

By Frank Esposito
Senior Staff Reporter

Published: June 4, 2014 4:37 pm ET
Updated: June 4, 2014 4:42 pm ET

Image By: Janet Century Ben Gerjets, left, and Josh Blackmore, both of RTP Co., speak about the importance of low friction plastics in medical devices.

Related to this story

Topics Medical, Materials, Plastics in Medical Devices
Companies & Associations RTP Co.

CLEVELAND — Researchers at RTP Co. are working to make sure friction doesn’t burn up users of single-use drug delivery devices.

The use of such devices — including syringes and injection pens — is becoming more widespread as patients are being taught how to administer their own medication, often at home. This, in turn, has put pressure on medical device makers to ensure that parts don’t exhibit stick/slip — basically, that they don’t get stuck — when being used.

“If the device doesn’t deliver the full amount of the drug, it’s a failure,” RTP global healthcare manager Josh Blackmore said May 6 at Plastics in Medical Devices, a conference hosted by Plastics News in Cleveland.

To find the best way to eliminate friction in these devices, researchers with Winona, Minn.-based RTP — which ranks among North America’s 30 largest compounders and concentrate makers — tested numerous resin pairings combined with several different lubricants.

Parts made of varying plastics — including polycarbonate, acetal, PBT, high density polyethylene, ABS and PC/ABS — were tested against each other after being filled with internal lubricants, according to product development engineer Ben Gerjets.

Lubricants used in the testing included fluorinated PFPE and RTP’s own APWA (all-polymeric wear alloy) Plus-brand lubricant. APWA Plus was commercialized earlier this year in acetal-based compounds.

RTP’s tests also measured how various plastic parts exposed to friction were affected by sterilization, UV degradation and shelf life. Parts also were exposed to 100 hours of wear over time.

“Dissimilar pairs [of resin] showed improved low friction,” Gerjets said. “But they performed best when dissimilar pairs were combined with internal lubricants.”

“Internal plastic lubrication improved stick/slip,” he added.


Comments

Friction can turn medical products into failures

By Frank Esposito
Senior Staff Reporter

Published: June 4, 2014 4:37 pm ET
Updated: June 4, 2014 4:42 pm ET

Post Your Comments


Back to story


More stories

Image

Experts explain why resin sales are down in a healthy US economy

February 27, 2015 1:58 pm ET

The economies of the U.S. and Canada posted solid growth in 2014 — even though resin demand in those countries lagged behind.    More

Image

Industry vet Dwight Morgan joins M. Holland

February 27, 2015 1:55 pm ET

Resin distribution leader M. Holland Co. has hired industry veteran Dwight Morgan as its vice president of corporate development.    More

Image

Indian masterbatch makers growing locally and thinking globally

February 27, 2015 1:30 pm ET

GANDHINAGAR, INDIA — India’s masterbatch makers are expanding their domestic capacity to meet growing demand, as some are also moving...    More

Image

German molder picks North Carolina for US manufacturing plant

February 26, 2015 4:21 pm ET

UPDATED — German medical goods company Raumedic AG has chosen Mills River, N.C., for its first U.S. manufacturing site and U.S. headquarters.    More

Image

Polypropylene prices rise, while PE and PS fall

February 26, 2015 4:01 pm ET

North American prices for polyethylene and polystyrene resins continued to fall in February, while regional prices for polypropylene showed a surprisi...    More

Market Reports

Flexible Packaging Trends in North America

North America represents about 30 percent of the global consumption of flexible packaging. Annual growth in this region is forecast at 4 percent during the next 5 years.

For more insight on growth opportunities, drivers of growth and the outlook for 2015, download this report.

Learn more

Plastics Recycling Trends in North America

This report is a review and analysis of the North American Plastics Recycling Industry, including key trends and statistics based on 2013 performance. We examine market environment factors, regulatory issues, industry challenges, key drivers and emerging trends in post-consumer and post-industrial recycling.

Learn more

Plastics in Mexico - State of the Industry Report

This report analyzes the $20 billion plastics industry in Mexico including sales of machinery & equipment, resins and finished products.

Our analysts provide insight on business trends, foreign investment, top end markets and plastics processing activity. The report also provides important data on exports, production, employment and value of plastics products manufactured.

Learn more

Upcoming Plastics News Events

June 2, 2015 - June 3, 2015Plastics Financial Summit - Chicago 2015

September 16, 2015 - September 18, 2015Plastics Caps & Closures - September 2015

More Events