Non-adhesive packaging method of bulk hot melt pressure-sensitive adhesive

Patent Name Non-adhesive Packaging Method for Block Hot Melt Pressure Sensitive Adhesive Patent Applicant Guangzhou Huida Fine Chemicals Co., Ltd. Principal Applicant Address 510730, Guangzhou, Guangdong Economic Development Zone, Mingzhu Road, inventor Wang Jianfeng; Wu Yongsheng (patent) No. 200510033891.1 Application date 2005.04.01 Award date Approval announcement number 1695917 Approval announcement date 2005.11.16 Instruction CD-ROM number D0546 Main classification number B29B11/02 Classification number B29B11/02 Division Original application number Priority item abstract This invention discloses a The non-sticky packaging method of the massive hot-melt pressure-sensitive adhesive, while the hot-melt pressure-sensitive adhesive melt is extruded by the screw extruder, coats the surface with a layer of anti-adhesive packaging film, and then undergoes a cooling and cutting process. Quasi-cylindrical block solids are formed. The hot-melt pressure-sensitive adhesive packaged by the method of the present invention not only has substantially no sticky surface at normal temperature and does not adhere to each other, and can be directly stored in a box or a bag for storage and handling, and is also compatible with a hot-melt pressure-sensitive adhesive. Good quality and low dosage solve the packaging problem of hot melt pressure sensitive adhesives. At the same time, it also has the advantages of low production and packaging costs and high efficiency, and meets the production requirements of subsequent products. Sovereign matter 1. Non-adhesive packaging method for bulk hot melt pressure sensitive adhesives comprises the following process steps: 1) The molten hot melt pressure sensitive adhesive is fed from a mixing kettle (1) into a device with temperature control (23) In the screw extruder (2); 2) using the screw extruder (2) to cool the hot melt pressure-sensitive adhesive at the same time as or after cooling the hot melt pressure-sensitive adhesive into a mold capable of coating the release coating The cavity (31) of the head (3), at the same time, uses a conveyor (4) to inject the release coating, which is melted into a liquid state in the coating vessel (11), around the cavity, so that the hot melt flows through the cavity. The pressure-sensitive adhesive is continuously and evenly coated with a layer of paint to form a non-stick coating; 3) The hot melt pressure-sensitive adhesive with a non-stick coating is sent to a cooler (5) for preliminary shaping, and then sent to the cooling water. Cool and harden; 4) Cut the columnar hot-melt pressure-sensitive adhesive into a quasi-cylindrical block with a length of 30-500 mm with a cutter (8); 5) Cool and dry the obtained hot melt pressure-sensitive adhesive further , Packing, that is the finished product. International Application International Announcement Date of Entry into the Country Patent Agency Guangzhou Yixin Patent Office Co., Ltd. Agency Address Chen Zhenhua