{"id":500,"date":"2022-10-24T18:05:24","date_gmt":"2022-10-24T10:05:24","guid":{"rendered":"https:\/\/plastic-machines.org\/?post_type=info&p=500"},"modified":"2026-08-21T11:29:25","modified_gmt":"2026-08-21T03:29:25","slug":"how-to-solve-the-problem-of-black-spots-on-plastic-pellets","status":"publish","type":"info","link":"https:\/\/plastic-machines.org\/fr\/info\/how-to-solve-the-problem-of-black-spots-on-plastic-pellets\/","title":{"rendered":"Comment r\u00e9soudre le probl\u00e8me des points noirs sur les granul\u00e9s de plastique ?"},"content":{"rendered":"

Dans le processus de granulation du plastique, il est relativement courant de rencontrer des taches noires sur les granul\u00e9s. S\u2019agit-il d\u2019un probl\u00e8me de machine \u00e0 extrusion de plastique<\/a>, d\u2019un probl\u00e8me de mati\u00e8res premi\u00e8res, ou d\u2019autres facteurs qui conduisent \u00e0 un tel ph\u00e9nom\u00e8ne ? En fait, le probl\u00e8me de taches noires dans le processus de granulation est un ph\u00e9nom\u00e8ne de d\u00e9faillance courant, surtout que les granul\u00e9s de couleur claire le pr\u00e9sentent de mani\u00e8re plus \u00e9vidente. Alors comment pouvons-nous am\u00e9liorer ce probl\u00e8me ?<\/p>

\"taches
taches noires sur les granul\u00e9s de plastique<\/figcaption><\/figure> <\/div>

Ces points noirs sont la d\u00e9t\u00e9rioration thermique r\u00e9siduelle du plastique de la machine \u00e0 granul\u00e9s de plastique apr\u00e8s le carbure. Afin de garantir la qualit\u00e9 des granul\u00e9s de plastique, le personnel doit souvent nettoyer le carbure de la machine.<\/p>

Use harder plastic or its return material and white mineral oil for cleaning, and the temperature should be appropriately increased by 10~15\u00b0C. <\/p>

At this time, the plasticizing ability of the small extruder should be considered. For large and medium-sized extruders that can plasticize ultra-high molecular weight plastics, they can be cleaned with ultra-high molecular weight plastics or their return materials and white mineral oil. <\/p>

Because the hardness of ultra-high molecular weight plastics is better, and when the temperature is high, the cleaning object will be softened, so that it becomes easy to fall off, which is beneficial to the carbides being carried out by the plastic melt.<\/p>

\"machine<\/figure> <\/div>

During the cleaning process, the speed of the plastic pellet machine can be repeatedly switched between low speed and high speed. If there is still a spare motor load, you can repeatedly stop and restart the extruder several times during the operation, which can improve the cleaning effect. <\/p>

When the carbide in the plastic melt is obviously reduced, gradually adjust to the appropriate temperature, then the normal production.<\/p>","protected":false},"excerpt":{"rendered":"

In the process of plastic granulation, it is a relatively common problem to encounter black spots on the pellets. Is it the problem of plastic pellet machine, the problem of raw materials, or other factors that lead to such a phenomenon? In fact, the problem of black spots in the granulation process is a common […]<\/p>\n","protected":false},"author":1,"featured_media":477,"parent":0,"template":"","tags":[85],"info-type":[11],"class_list":["post-500","info","type-info","status-publish","has-post-thumbnail","hentry","tag-granule-knowledge","info-type-news"],"taxonomy_info":{"post_tag":[{"value":85,"label":"granule knowledge"}],"info-type":[{"value":11,"label":"News"}]},"featured_image_src_large":["https:\/\/plastic-machines.org\/wp-content\/uploads\/2022\/06\/plastic-pellet-making-machine1.webp",720,540,false],"author_info":{"display_name":"Ella","author_link":"https:\/\/plastic-machines.org\/fr\/author\/admin\/"},"comment_info":"","_links":{"self":[{"href":"https:\/\/plastic-machines.org\/fr\/wp-json\/wp\/v2\/info\/500","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/plastic-machines.org\/fr\/wp-json\/wp\/v2\/info"}],"about":[{"href":"https:\/\/plastic-machines.org\/fr\/wp-json\/wp\/v2\/types\/info"}],"author":[{"embeddable":true,"href":"https:\/\/plastic-machines.org\/fr\/wp-json\/wp\/v2\/users\/1"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/plastic-machines.org\/fr\/wp-json\/wp\/v2\/media\/477"}],"wp:attachment":[{"href":"https:\/\/plastic-machines.org\/fr\/wp-json\/wp\/v2\/media?parent=500"}],"wp:term":[{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/plastic-machines.org\/fr\/wp-json\/wp\/v2\/tags?post=500"},{"taxonomy":"info-type","embeddable":true,"href":"https:\/\/plastic-machines.org\/fr\/wp-json\/wp\/v2\/info-type?post=500"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}