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公开(公告)号：US20240131752A1
公开(公告)日：2024-04-25
申请号：US18548326
申请日：2022-03-03
申请人： Daniel RIERA I BOIX
发明人： Daniel RIERA I BOIX
CPC分类号： B29B17/02 , B29B17/0412 , B29B2017/0203 , B29B2017/0296
摘要： Method of treating complex films, comprising at least a first single sheet of a polymer, preferably PET, a second single sheet of a polymer, preferably PE, and at least one layer of adhesive, preferably EVA or acrylic. The sheets are in flake form and are separated by subjecting them to a first stirring bath in hot water with at least one dicarboxylic acid and at least one fatty acid, preferably oxalic acid and oleic acid; plus a second stirring bath with a caustic agent, preferably caustic soda, and a surfactant. The PE and PET films are separated by at least one densifying bath. The PET films are then treated by means of a stirring bath, a drying silo and a foreign particle separation machine. After each bath, except between the two densifying baths, the flakes are passed through a centrifuge.
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公开(公告)号：US20240227245A9
公开(公告)日：2024-07-11
申请号：US18548326
申请日：2022-03-03
申请人： Daniel RIERA I BOIX
发明人： Daniel RIERA I BOIX
CPC分类号： B29B17/02 , B29B17/0412 , B29B2017/0203 , B29B2017/0296
摘要： Method of treating complex films, comprising at least a first single sheet of a polymer, preferably PET, a second single sheet of a polymer, preferably PE, and at least one layer of adhesive, preferably EVA or acrylic. The sheets are in flake form and are separated by subjecting them to a first stirring bath in hot water with at least one dicarboxylic acid and at least one fatty acid, preferably oxalic acid and oleic acid; plus a second stirring bath with a caustic agent, preferably caustic soda, and a surfactant. The PE and PET films are separated by at least one densifying bath. The PET films are then treated by means of a stirring bath, a drying silo and a foreign particle separation machine. After each bath, except between the two densifying baths, the flakes are passed through a centrifuge.
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