§177.1670 聚乙烯醇薄膜(Polyvinyl alcohol film.)

　　��177.1670 Polyvinyl alcohol film.


　　 Polyvinyl alcohol film may be safely used in contact with food of the types identified in �� 176.170（c� of this chapter, table 1, under Types V, VIII, and IX, in accordance with the following prescribed conditions:

　　（a� The polyvinyl alcohol film is produced from polyvinyl alcohol having a minimum viscosity of 4 centipoises when a 4-percent aqueous solution is tested at 20 ��C.

　　（b� The finished food-contact film for use in contact with Food Types V or IX, when extracted with the solvent characterizing the type of food and under the conditions of time and temperature characterizing its intended use as determined from tables 1 and 2 of �� 176.170（c� of this chapter, yields total extractives not to exceed 0.078 milligram per square centimeter �?.5 milligram per square inch� of food-contact surface when tested by ASTM method F34-76 （Reapproved 1980�? ��Standard Test Method for Liquid Extraction of Flexible Barrier Materials,�� which is incorporated by reference. Copies may be obtained from the American Society for Testing Materials, 100 Barr Harbor Dr., West Conshohocken, Philadelphia, PA 19428-2959, or may be examined at the National Archives and Records Administration （NARA�? For information on the availability of this material at NARA, call 202-741-6030, or go to:http://www.archives.gov/federal_register/code_of_federal_regulations/ibr_locations.html.

　　（c� The finished food-contact film shall not be used as a component of food containers intended for use in contact with water.

　　[42 FR 14572, Mar. 15, 1977, as amended at 49 FR 10110, Mar. 19, 1984]