当热收缩带完全收缩后，再将整个热收缩带加热5-8分钟左右，受冬季气温影

When the heat shrinkable tape is fully contracted, heat the entire heat shrinkable tape for about 5-8 minutes. Affected by the temperature in winter, the heating time should be properly controlled to make the hot melt adhesive fully melt and overflow from both ends. The surface of the heat shrinkable tape is still When it is soft, roll it while it is hot to squeeze out bubbles. The heating flame must cover the edge of the heat shrinkable tape to ensure that the heat shrinkable tape will not be curled or curled after the shrinkage is completed. <br>After the heat shrinkable tape is fully shrunk, firstly in the circumferential direction, and then along the axial direction (the width direction of the heat shrinkable tape), heat it back and forth uniformly from bottom to top, from top to bottom. The heating time is 5-8 minutes to fully melt the inner layer of hot melt adhesive. , Keep the temperature of the whole patching part above 130℃, the movement of the torch should be continuous, do not jump and appropriately exceed the edge of the heat shrinkable belt. <br>Tempering for 5-8 minutes is to ensure that the bonding is completed at one time, overcome a series of impacts caused by environmental changes, and ensure the quality of the patch. <br>Do not close the fire immediately after the shrinkage is completed. The hot melt adhesive becomes soft, sticky, and fluid with the increase of tempering time and temperature. Only then can the glue surface and the bonding surface of the wet primer have bonding conditions.

When the heat shrink belt completely shrinks, then the entire heat shrink belt heating 5-8 minutes or so, affected by the winter temperature, should properly grasp the heating time, so that the hot melt fully melt and overflow from both ends, in the heat shrink belt surface is still soft, while the hot roller pressure, squeeze out bubbles. The heating flame must cover the edge of the heat shrink belt to ensure that when the heat shrink belt shrinks, there will be no edge- and curling phenomena.<br>After the total contraction of the heat shrink belt, the first weekly, then along the axial (heat shrink belt width direction) from the bottom to the bottom, from top to bottom continuously evenly heated back and forth, heating time 5-8 minutes, so that the inner hot melt fully melted, so that the temperature of the entire filling area is maintained above 130 degrees C, the torch should move continuously, do not jump and appropriately exceed the edge of the shrinking heat belt.<br>Tempering 5-8 minutes is to ensure a complete bonding, overcome the environmental changes brought about by a series of effects, so that the quality of the filling is guaranteed.<br>Avoid shrinkage to complete the immediate heating, hot melt with the increase of tempering time, temperature increase and become soft, sticky, flow, then the adhesive surface and wet state of the combination of the surface has bonding conditions.

After the heat shrinkable belt is fully contracted, heat the whole heat shrinkable belt for about 5-8 minutes. Affected by the temperature in winter, the heating time should be properly controlled to make the hot melt adhesive fully melt and overflow from both ends. When the surface of the heat shrinkable belt is still soft, the bubbles are extruded by hot rolling. The heating flame must cover the edge of the heat shrinkable belt to ensure that the edge warping and curling will not occur after the shrinkage of the heat shrinkable belt is completed.<br>After the heat shrinkable belt is fully contracted, it shall be heated from bottom to top and from top to bottom continuously and evenly back and forth from bottom to top and from top to bottom along the axial direction (width direction of heat shrinkable band) for 5-8 minutes to fully melt the hot melt adhesive in the inner layer, and keep the temperature of the whole joint patching part above 130 ℃. The torch movement should be continuous, do not jump and appropriately exceed the edge of the heat shrinkable belt.<br>Tempering for 5-8 minutes is to ensure one-time bonding, overcome a series of effects caused by environmental changes, and ensure the quality of joint coating.<br>The hot melt adhesive will become soft, sticky and flowing with the increase of tempering time and temperature. At this time, the bonding surface can be bonded with the wet primer.