Small -size cover structure of tubular polyurethane foam gap filler

The utility model discloses a small -size cover structure of tubular polyurethane foam gap filler, including jar body and a tegillum in the structure, face lid and valve base have been set gradually in the top of the jar body, be provided with the valve core at the middle part of valve base, be provided with the draw -in groove of round to inside concave yield between face lid and valve base, tegillum open -ended lower part inboard is provided with round breaking out to inside, can make the tegillum pass through protrudingly and mutual block of draw -in groove or separation, draw -in groove rather than through between necking down and the face lid base combines or separates. The shoulder at the face lid is sat to the lid mouth, and no longer sits at the bottleneck, can solve withstand voltage problem to reduce manufacturing cost, and then the indirect cost that reduces the carton, the thickening of tegillum wall thickness makes the bearing capacity improve greatly, - 9 gram, save material costs widely of about 7 grams of tegillum weight, behind adoption tegillum, every two bottles of adjacent glue, the space has been increaseed a lot, can put the spray tube here like this, and the carton just need not increase.