Repair from the printing adhesive layer on the sur

2022-08-13
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Repair from the printing adhesive layer on the surface of the rubber blanket to the middle layer of the backing cloth

apply the repair glue on the surface of the fifth backing cloth, cut a backing cloth with the same size as the fifth surface, apply a layer of repair glue, and then accurately cover the position of the fifth backing cloth

on the surface of the fourth layer after repair, stick it with adhesive tape, place the film of corresponding size on it, place a heavy object on the film to pressurize (pressure L96 490kpa), and then place it for 1H

1h later, remove the weight and film, and remove all adhesive tapes on the fourth layer of surface

repair the third, second and first layers in sequence according to the above method

after the repair, stick the adhesive tape at the position of 1mm around the cut edge of the rubber blanket, and the following treatment method is the same as the repair method of the damage shown by the serum test of the surface adhesive layer

repair of longitudinal tear of rubber blanket: this kind of damage usually penetrates the bottom cloth, so it needs to be repaired from the opposite side of the rubber blanket. The specific repair methods are as follows:

① seal the cracks on the front of the rubber blanket with adhesive tape

② draw a parallelogram around the crack on the reverse side of the rubber blanket with a pen

③ do step stripping from the seventh layer to the second layer on the reverse side of the rubber blanket

repair of longitudinal tear of rubber blanket

④ grind off the residual glue on the first layer of bottom cloth and the surface of each step with sandpaper

⑤ apply the prepared repair glue on the surface of the first layer, and accurately cover the coated base cloth of corresponding size on the surface of the first layer of glue, and place the film of corresponding size on it before pressurizing

⑥ after placing for 1h, relieve the pressure, remove the film, and grind off the residual glue at the edge of the backing cloth and the connection around the second layer with sandpaper. Repair the third, fourth, fifth, sixth and seventh layers in the same way

⑦ the flow range of the equipment is 15 ~ 140 g/s. after 24h, turn the rubber blanket to the front

⑧ remove the adhesive tape on the crack of the adhesive layer

⑨ make a groove on the longitudinal crack with a knife, grind away the impurities in the groove with sandpaper, and clean it with alcohol

⑩ seal adhesive tape around the surface of the groove

strong adsorption statement: non woven tensile testing machine also uses the detection of this material

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