Abstract Identification of methodologies for recycling laminated glass, especially the interlayer film, and their contextualization within the glass recycling field implicated an extensive patent search. During the last decade the technology centre L'Urederra exploited a methodology for recycling the poly-vinyl-butyral to be reused as interlayer in windscreens. Subsequent rounds of patents selection were aimed at identifying equivalent or innovative methodologies. Few documents address the recycling of the poly-vinyl-butyral film describing a stage implicating a mechanic separation followed by a basic solution treatment. According to a recent journal article, such stages combination is crucial for obtaining recycled PVB compatible with its reincorporation in windscreens.

中文翻译：

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一项旨在确定回收 PVB 用作挡风玻璃夹层的环保方法的专利情报分析

摘要 确定回收夹层玻璃，特别是中间膜的方法，以及它们在玻璃回收领域的背景，涉及广泛的专利搜索。在过去十年中，L'Urederra 技术中心开发了一种方法来回收聚乙烯醇缩丁醛，以作为挡风玻璃的夹层重新使用。随后几轮的专利选择旨在确定等效或创新的方法。很少有文件涉及聚乙烯醇缩丁醛薄膜的回收利用，描述了一个涉及机械分离和基本溶液处理的阶段。根据最近的一篇期刊文章，这种阶段的组合对于获得与其重新结合在挡风玻璃中兼容的回收 PVB 至关重要。