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Important precautions for Xyron™

 

All information contained here is given in good faith based on data, information and documents currently available to Asahi Kasei Corporation. It is provided without warranty, express or implied, as to its completeness or accuracy, and is subject to change without notice. It is the responsibility of the user to make their own determination as to the suitability of Xyron™ for the intended conditions of use and product design. For the most current information, call Asahi Kasei Corporation at +81-3-6699-3386, or by facsimile at +81-3-6699-3473.

Important Precautions and Notes on Handling and Use

Always observe the following general precautions in the handling and use of Xyron™, and consult the material safety data sheet, which will be made available upon request, before handling and use. Prior to mixing or using any additive or other substance with Xyron™, investigate and determine its safety and suitability for that purpose.

Health and safety

Avoid exposure of skin, eyes, and respiratory tract to gas generated during melting and drying. Avoid contact exposure to hot or molten resin. Employ local ventilation and protective gear, including chemical goggles or safety glasses, and protective gloves, throughout drying and melting operations. In case of emergency, call one of the following:

US: +1-800-424-9300 (Chemtrec)
EU: +32-(0)-1458-4545 (BIG v.z.w.)
Japan: +81-44-271-2561 (Asahi Kasei)

Combustibility

Xyron™ is combustible and must be kept strictly away from heat, sparks, and flame during handing and storage. Xyron™ may emit toxic gases during combustion. Extinguish with water, or with foam or powder chemical extinguisher.

Disposal

Dispose of Xyron™ by landfill burial or by incineration in a properly equipped facility, in accordance with relevant laws and regulations. Xyron™ may emit carbon monoxide and other toxic gasses during incineration.

Storing

Keep Xyron™ strictly away from direct sunlight, water, high humidity, and moisture.

Proscribed Applications

  • Do not use Xyron™ for food packaging applications.
  • Do not use Xyron™ for medical devices designed or intended for intracorporeal implantation or contact, whether direct or indirect, with bodily fluids.

For specifics, refer to our division. Asahi Kasei Corporation encourages its customers to review their applications of its products from the standpoint of human health and environmental quality. To help ensure that Asahi Kasei Corporation products are not used in ways for which they are not intended or tested, Asahi Kasei Corporation representatives are willing to assist in dealing with ecological and product safety considerations.

Compliance with Relevant Standards

Xyron™ grades are available which comply with Japans voluntary industrial guidelines on polyolefin and other synthetic resins for use as food container or food wrapping materials, with Notification No.370 of the Ministry of Health and Welfare of Japan, and with UL and CSA standards. In all cases, it is nevertheless recommended that the safety of Xyron™ for a specific application be confirmed by the user through appropriate testing. For further information, please contact Asahi Kasei Corporation.

Other

Asahi Kasei Corporation warrants only that the use or sale of any material described herein offered for sale by Asahi Kasei Corporation does not infringe any patent covering the material itself, but does not warrant against infringement by reason of the use thereof in combination with other materials or in any process.

Molding

Pre-drying

Modified PPE has the lowest moisture absorption of any engineering plastic and displays excellent hydrolysis resistance. To help ensure against surface appearance faults such as silver streaks, it is nonetheless good practice to pre-dry the material. For applications where surface appearance is critical, always be sure to pre-dry the material. When using a PPE/PA grade, pre-drying is especially important due to the high moisture absorption properties of PA.

Pre-drying should be done at the proper temperature range specified for each grade. A closed loop dehumidifying/drying hopper system is the most efficient equipment for pre-drying Xyron™. When using hot-air circulating ovens, Xyron™ pellets will be efficiently pre-dried when spread out in trays at a uniform depth of 20 to 30 mm.

Take care to ensure that Xyron™ is not pre-dried for longer than 8 hours. Excessive pre-drying may result in degradation of physical properties and color changes.

Regrind

Properly molded Xyron™ (sprues, runners, molded articles, etc.) may be reground, dried, and remolded without adverse effects. It is essential that material to be reground be free from oil, grease, dirt, and foreign substances, and shows no signs of degradation. Regrind levels up to 20% can be used successfully, but it is not advisable to use reground material for applications where surface appearances are critical.

Purging

High viscosity GPPS and Asaclean SA™ (available from Asahi Kasei Corporation and distributors) are recommended purging materials for all Xyron™ grades. Purging should be performed at temperature ranges appropriate for each grade.

Downtime

In order to prevent polymer degradation when molding operation is stopped or interrupted, the following measures are recommended.

  • Up to 30 minutes:
    Maintain cylinder temperature. Purge barrel using same material prior to the re-start of molding operation.
  • From 30 minutes to 12 hours:
    Decrease cylinder temperature to 200-220°C. Purge barrel using high viscosity GPPS. Upon commencement of molding operation, Purge barrel using material for molding after increasing cylinder temperature to the required level.
  • For downtime longer than 12 hours:
    Purge barrel with high viscosity GPPS, and shut down machine.

Mold release

Generally, mold release agents are not required for molding Xyron™ resins. In cases where mold release agents are needed due to the complex shape of the mold, minimal use is recommended. Silicone-based mold release agents such as Pelicoat B™ (manufactured and sold by Chyuko-Kasei, Co., Ltd., Japan) are recommended, as the chemical ingredients do not react with Xyron™.

DISCLAIMER OF WARRANTY AND LIABILITY

NOTICE:
Although the information and recommendations set forth herein are presented in good faith and believed to be correct, Asahi Kasei Corporation expressly disclaims any and all representations and warranties as to the completeness and accuracy thereof.

Information is supplied upon the EXPRESS CONDITION THAT THE PERSONS RECEIVING SAME WILL MAKE THEIR OWN DETERMINATION AS TO ITS SUITABILITY FOR THEIR PURPOSES PRIOR TO USE.

Asahi Kasei Corporation warrants only that this product will perform according to the technical specifications provided in the MSDS and other materials provided by it. NO OTHER REPRESENTATIONS OR WARRANTIES, EXPRESSED OR IMPLIED, WHETHER ORAL OR ARISING BY USAGE OF TRADE OR COURSE OF DEALING, INCLUDING, WITHOUT LIMITATION, ANY WARRANTIES OF FITNESS OR MERCHANTABILITY , shall be given any legal effect by this product or these materials.

This product has not been designed, tested, or intended for any use other than that for which it has been contracted for sale. This product is not warranted against injuries or damages of any kind caused by uses for which this product was not designed, tested, or intended.

Nothing contained herein is to be construed as a recommendation to use any product process, equipment or formulation in conflict with any patent, and Asahi Kasei Corporation makes no representation or warranty, express or implied, that the use thereof will not infringe any patent.

IN NO EVENT SHALL ASAHI KASEI CORPORATION BE LIABLE FOR ANY ANTICIPATED OR LOST PROFITS INCIDENTAL DAMAGES, CONSEQUENTIAL DAMAGES, COSTS TIME CHARGES OR OTHER LOSSES WHETHER BASED ON BREACH OF CONTRACT TORTIOUS CONDUCT, OR ANY OTHER THEORY, INCURRED IN CONNECTION WITH THE PURCHASE OR USE OF THIS PRODUCT.

ASAHI KASEI CORPORATION DOES NOT AUTHORIZE ANYONE TO ASSUME FOR IT ANY LIABILITY OR TO MAKE ON ITS BEHALF ANY ADDITIONAL WARRANTIES IN CONNECTION WITH THESE MATERIALS.

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