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Cap Liners improve airflow even after contact with chemicals.

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May 7, 2014 - Used to maintain structural integrity of containers of chemicals for agricultural and household use, 3FL-363 and 3FL-373 provide breathability without leaking and maintain maximum airflow. Both 3FL (Full Face Foam Liner) cap liners, effective throughout distribution, transportation, and storage, are 1 mm thick, repeatedly reseal in use, and resist effects of aggressive chemicals. Venting can be done via hole in cap (3FL-363) or threads of cap without hole (3FL-373).

New Gore® Cap Liners Significantly Improve Airflow Even after Liquid Contact with the Most Aggressive Chemicals

W. L. Gore & Associates, Inc.
402 Vieve's Way
Elkton,, MD, 21921

Press release date: April 28, 2014

ELKTON, MD - - Two new 3FL (Full Face Foam Liner) cap liners from W. L. Gore & Associates are engineered to maintain the structural integrity of containers of chemicals for agricultural and household uses. The 3FL-363 and 3FL-373 cap liners, the latest addition to Gore’s extensive portfolio, provide excellent breathability and are resistant to many of today’s most aggressive chemicals – toilet cleaners, stain lifters, pipe clog removers, and organic fertilizers -- without necessitating any changes in formulation. This enables OEMs to get their products to market faster and possibly develop even more effective formulations.

Packaged chemical products often release or consume gases, causing plastic containers to collapse, swell, leak, or even burst. GORE® cap liners have been developed to help the packaging engineer maintain container integrity throughout distribution, transportation and storage.

The 3FL-363 and 3FL-373 cap liners allow containers to breathe without leaking and to maintain maximum airflow, even after contact with aggressive and highly concentrated chemical formulations. Venting can be done through a hole in the cap (3FL-363) or through the threads of a cap without a hole (3FL-373).

The new 3FL cap liners feature a multi-layer construction with an ePTFE (polytetrafluoroethylene) membrane bonded across the face of the liner. This proprietary membrane allows gases to be released inside and outside the container, while preventing liquids from leaking out and contaminants from entering.  Both have the  new advanced oleophobic membrane that is ideal for use with most aggressive and viscous formulations.

Both of the new cap liners are only 1 mm thick and repeatedly reseal in use. They can be installed like a traditional foam liner and are available in various slit widths. Gore will be showcasing the 3FL-363 and 3FL-373 cap liners at interpack 2014, Dusseldorf, Germany, May 8-14, in Hall 10 / E98.

For more information, visit or call1-800-523-4673.

About W. L. Gore & Associates, Inc.

Gore is a technology-driven company focused on discovery and product innovation. Well known for waterproof, breathable GORE-TEX® fabric, the company’s portfolio includes everything from high-performance fabrics and implantable medical devices to industrial manufacturing components and aerospace electronics. Founded in 1958 and headquartered in Newark, Del., Gore posts annual sales of more than $3.2 billion and employs approximately 10,000 associates with manufacturing facilities in the United States, Germany, the United Kingdom, Japan, and China, and sales offices around the world. Gore is one of a select few companies to appear on all of the U.S. “100 Best Companies to Work For” lists since the rankings debuted in 1984. The company also appears regularly on similar lists around the world. Learn more at

New 3FL Cap Liners from Gore provide excellent breathability and are resistant to many of today’s most challenging formulations.
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