Temperature-change-resistant hot melt adhesive for beverage box bottle cap and preparation method of temperature-change-resistant hot melt adhesive

The invention discloses a temperature-change-resistant hot melt adhesive for a beverage box bottle cap. The hot melt adhesive is prepared from the following raw materials in parts by weight: 15-50 parts of petroleum resin, 5-25 parts of polyisobutene, 3-15 parts of liquid petroleum resin, 20-70 parts of a block olefin copolymer, 0.1-1 part of an auxiliary agent and 5-30 parts of synthetic wax. According to the invention, the styrene-isoprene-styrene block copolymer with the block ratio of styrene to isoprene being 29: 71 and the synthetic wax are adopted to act together, so that the problem of wiredrawing of the hot melt adhesive during operation in a low-temperature environment can be solved. And the cohesive force and the high temperature resistance of the hot melt adhesive are improved under the combined action of the SIS with the melt index of 9-16g/10min and the EVA with the vinyl acetate content of 28wt%. 本发明公开了一种耐温度变化的饮料盒瓶盖用热熔胶，制备原料以重量份计包括：石油树脂15-50份，聚异丁烯5-25份，液体石油树脂3-15份，嵌段烯烃共聚物20-70份，助剂0.1-1份，合成蜡5-30