公开(公告)号：US4059466A

公开(公告)日：1977-11-22

申请号：US710378

申请日：1976-08-02

申请人： Charles H. Scholl ,  John R. Janner, Jr. ,  William C. Stumphauzer ,  Duane O. Shuster

发明人： Charles H. Scholl ,  John R. Janner, Jr. ,  William C. Stumphauzer ,  Duane O. Shuster

IPC分类号： B27G11/00 ,  B31B50/62 ,  C09J5/06 ,  B32B5/18

CPC分类号： C09J5/06 ,  B27G11/00 ,  B31B1/00 ,  Y10S261/26 ,  Y10T156/1798 ,  Y10T428/249976 ,  Y10T428/249984

摘要： A novel method and apparatus are disclosed for manufacturing a novel adhesive product. The product is a pair of substrates adhered together by compressed hot melt adhesive foam. The foam is created by first mixing a chemical blowing agent, such as powdered azodicarbonamide, into the solid hot melt adhesive at a temperature below the decomposition temperature of the blowing agent. Subsequently, the solid adhesive and powdered blowing agent are heated to a temperature above the melting temperature of the solid adhesive and above the decomposition temperature of the blowing agent while confining the molten mixture under pressure in order to force the gas generated by the decomposition of the blowing agent into solution with the liquid adhesive. The liquid adhesive is subsequently dispensed at atmospheric pressure with the result that the gas is released from the solution and becomes entrapped in the adhesive to form a homogenous closed cellular adhesive foam.

摘要翻译： 公开了用于制造新型粘合剂产品的新颖方法和装置。 该产品是通过压缩的热熔粘合剂泡沫粘合在一起的一对基底。 泡沫是通过在低于发泡剂的分解温度的温度下首先将化学发泡剂如粉末偶氮二酰胺混合到固体热熔粘合剂中而制成的。 随后，将固体粘合剂和粉末状发泡剂加热到高于固体粘合剂的熔融温度并高于发泡剂的分解温度的温度，同时在熔融混合物的压力下限制，以迫使由分解产生的气体 用液体粘合剂将发泡剂加入溶液中。 随后在大气压下分配液体粘合剂，结果气体从溶液中释放出来并被夹带在粘合剂中以形成均匀的封闭的多孔粘合剂泡沫。