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Methods for preventing or reducing interaction between packaging materials and polymeric articles contained therein

a technology of packaging materials and polymeric articles, applied in the field of polymeric articles, can solve the problems of reducing shelf life and/or adverse reactions, and limited the use of surfactants in packaging solutions for the purpose of preventing device sticking, so as to reduce the potential for interaction and prevent or reduce interaction

Inactive Publication Date: 2006-11-23
BAUSCH & LOMB INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The present invention provides a way to make polymeric articles, like ophthalmic devices, that don't stick to the packages they're stored in. This is done by oxidizing the device or treating it with an oxygen-containing plasma before placing it in the package. This reduces the potential for interaction between the device and the package, making it easier to handle and ship.

Problems solved by technology

However, adding new compounds, including surfactants, in device packaging solution would require regulatory approval.
Other challenges encountered in adding a surfactant to a packaging solution, including the possibility of lowering shelf-life and / or adverse reactions during heat sterilization, have further limited the use of surfactants in a packaging solution for the purpose of preventing device sticking.

Method used

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  • Methods for preventing or reducing interaction between packaging materials and polymeric articles contained therein
  • Methods for preventing or reducing interaction between packaging materials and polymeric articles contained therein

Examples

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example

Treatment of Contact Lenses with Oxygen-Containing Plasma

[0024] Monomer formulation RD-1632 comprising polymerizable dialkyl siloxanes and a polymerizable fluoroalkyl siloxane (Bausch & Lomb Incorporated, Rochester, N.Y. ) was cast into contact lenses in polypropylene molds and cured under ultraviolet (“UV”) light. The lenses were released from the molds using liquid nitrogen.

[0025] These lenses were treated with oxygen plasma at a range of treatment times (from 30 seconds to 30 minutes) in a Metroline / IPC 7104 plasma chamber at pressure of about 40 Pa (or 0.3 mm Hg), power of 400 W, and RF of 13.56 MHz. Some lenses were also treated for 30 seconds at the same pressure and RF, but at power of 100 W. The loading for each plasma treatment was 50 lenses on a tray designed to handle lenses, centered on a shelf in the middle of the chamber. After plasma treatment, these lenses were extracted in a bath of isopropanol (“IPA”) for 4 hours, re-hydrated in water, and packaged into polypropy...

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PUM

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Abstract

A method for preventing or reducing interaction between a container and a polymeric article contained therein comprises oxidizing a surface of the polymeric article. The method is advantageously used to package ophthalmic devices in polymeric containers.

Description

BACKGROUND OF THE INVENTION [0001] The present invention relates to polymeric articles having reduced interaction with packaging materials, methods for producing such articles, and methods for preventing or reducing interaction between such articles and their packaging materials. In particular, the present invention relates to ophthalmic devices that are modified to have reduced interaction with packaging materials, methods for producing such ophthalmic devices, and methods for preventing or reducing interaction between such ophthalmic devices and their packaging materials. [0002] Packaging containers are often made of polymeric materials. These containers also are often used to contain products made of polymers, which tend to stick to the containers. For example, ophthalmic devices, such as contact lenses and intraocular lenses (“IOLs”), are commonly contained in packages filled with packaging solution for shipment to points of use. The individual package typically comprises a cavi...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): A45C11/04
CPCB65D2585/545B65B25/008
Inventor STACHOWSKI, MARK J.FRIENDS, GARY D.RASTOGI, SANJAY M.
Owner BAUSCH & LOMB INC
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