What are the causes of unstable extrusion in elastomer extruders?

Views: 9     Author: Site Editor     Publish Time: 2022-04-17      Origin: Site

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What are the causes of unstable extrusion in elastomer extruders?

Elastomer extruders are often used in the process when there are a variety of reasons for a variety of small problems. For example, the plastic products in the production process are not stable, the ups and downs lead to uneven production of products is a relatively common problem. When we encounter this problem, how should we troubleshoot the problem to solve it? The causes of unstable extrusion of elastomer extruders are several common, and we can gradually eliminate them.



The following is a list of content

Recipe problems and wear problems

Temperature control system failure



Recipe problems and wear problems


When extrusion is unstable, consider whether you have recently adjusted your plastic product's production formula or whether you have changed raw material manufacturers, resulting in formula problems. Such problems are likely to occur during the recipe adjustment process. In addition, you need to exclude the extruder screw wear and tear caused by the extruder extrusion instability. If the equipment is used for a long time or often produces some poor quality plastic products, it will produce extrusion instability. The former is the normal wear and tear of the equipment, while the latter is due to the formula in the calcium powder added too much to accelerate the aging of the equipment, this situation can only be solved by replacing the screw barrel screw.



Temperature control system failure


In addition to the above two points, it is also necessary to check the temperature control system of the elastomer extruder to see if there is a failure. The failure of the temperature control system will lead to uneven plasticization of the raw material inside the screw barrel and make the extrusion pressure unstable and the extrusion undulation and uneven shape of the product. So when the problem occurs, we have to exclude the cause of the equipment according to the problem itself in order to better solve it.


Elastomer extruder in the production process is usually the use of air-cooled way to cool down because the plastic in the production of the temperature required will generally exceed 100 degrees Celsius if the traditional water cooling will affect the normal production of equipment. Therefore, we usually use air-cooling to cool down the equipment. There are many types of plastics that can be extruded by elastomer extruders, and the temperature settings of the production equipment used in the production of different types of plastics are different, so we must combine the products to produce the temperature of the barrel of the elastomer extruder.


The temperature setting of each temperature control section of the elastomer extruder screw is not necessarily the same, and if the temperature setting of the equipment is not reasonable during production, it will directly lead to unstable production of the equipment, and in serious cases, it will affect the normal extrusion production of the product. Therefore, we must set the temperature to meet the product extrusion production through the temperature control system. When the equipment reaches the maximum value we set, the cooling fan will be activated to cool down the screw, so that the production temperature control is completed. The air volume of the cooling fan has to meet the production cooling requirements, so the cooling fan configuration of the elastomer extruder is also to be equipped according to the equipment.



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