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§175.365 用于聚碳酸酯薄膜的亚乙烯基二氯共聚物涂料(Vinylidene chloride copolymer coatings for polycarbonate film)

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放大字体  缩小字体 2011-10-02 02:58:02  来源:GPO  浏览次数:3635
核心提示:符合下列条件下,本节中所指的用于聚碳酸酯薄膜的亚乙烯基二氯共聚物涂料,可安全地用做食品表面:本涂料可在聚碳酸酯树脂基膜上作为单面或双面的连续涂膜,该聚碳酸酯树脂应符合177.1580的规定;本涂料有亚乙烯基二氯与丙烯腈、甲基丙烯酸甲酯和丙烯酸共聚制得;在涂料生产中或随后加入的一些添加物以产生所希望的性质,可以包括十二烷基苯磺酸钠。本节所指的丙烯腈共聚物应符合180.22的规定。
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备注 符合下列条件下,本节中所指的用于聚碳酸酯薄膜的亚乙烯基二氯共聚物涂料,可安全地用做食品表面:本涂料可在聚碳酸酯树脂基膜上作为单面或双面的连续涂膜,该聚碳酸酯树脂应符合177.1580的规定;本涂料有亚乙烯基二氯与丙烯腈、甲基丙烯酸甲酯和丙烯酸共聚制得;在涂料生产中或随后加入的一些添加物以产生所希望的性质,可以包括十二烷基苯磺酸钠。本节所指的丙烯腈共聚物应符合180.22的规定。

      §175.365 Vinylidene chloride copolymer coatings for polycarbonate film.


      Vinylidene chloride copolymer coatings identified in this section and applied on polycarbonate film may be safely used as food-contact surfaces, in accordance with the following prescribed conditions:

  (a) The coating is applied as a continuous film over one or both sides of a base film produced from polycarbonate resins complying with § 177.1580 of this chapter.

  (b) The coatings are prepared from vinylidene chloride copolymers produced by copolymerizing vinylidene chloride with acrylonitrile, methyl acrylate, and acrylic acid. The finished copolymers contain at least 50 weight-percent of polymer units derived from vinyldene chloride.

  (c) Optional adjuvant substances employed in the production of the coatings or added thereto to impart desired properties may include sodium dodecylbenzenesulfonate in addition to substances described in § 174.5(d) of this chapter.

  (d) The coating in the finished form in which it is to contact food, when extracted with the solvent or solvents characterizing the type of food, and under the conditions of time and temperature characterizing the conditions of its intended use as determined from tables 1 and 2 of § 176.170(c) of this chapter, shall yield net chloroform-soluble extractives in each extracting solvent not to exceed 0.5 milligram per square inch of coated surface as determined by the methods described in § 176.170(d) of this chapter. In testing the finished food-contact articles, a separate test sample is to be used for each required extracting solvent.

  (e) Acrylonitrile copolymers identified in this section shall comply with the provisons of § 180.22 of this chapter.

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