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 Materials, Medical, 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

Slowing the aging process in plastics

October 31, 2014 1:13 pm ET

Australian scientists have developed a new material that can strengthen porous plastics by slowing their aging process.    More

Image

Corbion Puriac considering PLA plant in Thailand, if customers commit

October 31, 2014 11:52 am ET

Biofeedstocks supplier Corbion Puriac will build a polylactic acid (PLA) plant in Thailand if it receives a sales commitment from customers.    More

Image

Using 3-D printing for molds to speed medical part development

October 31, 2014 10:17 am ET

3-D printing and additive manufacturing equipment maker Stratasys Ltd. is collaborating with U.S. design and product developer, Worrell Design Inc.,...    More

Image

Report: Lanxess may cut 1,200 jobs

October 31, 2014 9:40 am ET

German chemicals company Lanxess AG may cut up to 1,200 jobs, around 7 percent of its workforce, as part of a group-wide overhaul to counter...    More

Image

Ebola scare, ACA could drive health care growth

October 30, 2014 2:45 pm ET

Bill Wood's new forecast for medical supplies and equipment calls for an increase of 6.6 percent in the total output of these products in 2014, and th...    More

Market Reports

Pipe, Profile & Tubing Extrusion Market Trends

This report provides in-depth analysis of current trends, statistics and innovations in product design and production impacting the PP&T industry in North America.

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 million dollar 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

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

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

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

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

October 27, 2015 - October 29, 2015Plastics Financial Summit - New York - 2015

More Events