After the PTFE tape is baked at a high temperature, the […]
After the PTFE tape is baked at a high temperature, there will be residual glue, glue overflow, etc., through the touch or close observation, there will be tiny residues, which have a great impact on production. This phenomenon may be that the high temperature resistance data of the tape does not meet the production requirements. The high temperature resistance requirements are usually 210-260 degrees. Therefore, it is necessary to confirm whether it meets the production requirements before production.PTFE Seal Tapes 25mm High Quality
If the temperature of the production line is too high and it is not within the range of the process requirements, there will be residual glue. Check whether the temperature sensor is normal; the quality of the Teflon high-temperature tape product itself has quality problems. If you do not strictly follow the pressure during the coating production process, The baking data of the sensitive adhesive is heated and cured, and the curing time is not enough or the coating line speed is too fast, which will cause the glue, the primer glue, and the substrate to be unable to combine; when the Teflon tape is coated by the coating machine After the rubber roller is coated, the semi-finished products generally need to stand for 2-3 days before rewinding and slitting. The main purpose of this is to fully bond the glue and the substrate. The glue is completely cured in its natural state. Rewinding and slitting are carried out after curing, and there will be residual glue.
In view of the phenomenon of residual glue, the first and most critical thing is to control the quality of the Teflon tape. The ozone preliminary high temperature screening test should be carried out before it is put into production, and it can be used after it meets the company's requirements.
Because Teflon tape is a high-tech process, the raw materials in the production process contain chemical components, and each customer uses the environment, coating equipment, technical requirements, production process and personnel operations and many other factors, in the production process It is inevitable that there will be abnormal phenomena.
If there is a residual glue phenomenon during the production process, the abnormal workpiece should be taken out first and stored separately. In order to avoid such a phenomenon again, the online product should be inspected more closely and analyzed through a period of time or a certain number of bad statistics. The percentage of the residual glue rate should also be checked according to the actual situation to find out the source of the problem, so that similar phenomena will not occur in the production process.
For workpieces with residual glue, in order to reduce the cost of investment, these workpieces can be removed with alcohol or tape. The method is to use a cotton cloth dipped in a small amount of alcohol to wipe, and use the same type of tape to remove.