{"id":480,"date":"2018-11-08T06:12:28","date_gmt":"2018-11-08T06:12:28","guid":{"rendered":"https:\/\/www.recycle-plant.com\/?p=480"},"modified":"2026-08-10T15:59:48","modified_gmt":"2026-08-10T07:59:48","slug":"what-kind-of-plastic-is-made-in-disposable-cups-in-life","status":"publish","type":"info","link":"https:\/\/www.recycle-plant.com\/pt\/what-kind-of-plastic-is-made-in-disposable-cups-in-life.html","title":{"rendered":"Que tipo de pl\u00e1stico \u00e9 usado na fabrica\u00e7\u00e3o de copos descart\u00e1veis?"},"content":{"rendered":"

PP is a semi-crystalline material. It is harder and has a higher melting point than PE. Since the PP temperature of the homopolymer type is very brittle when it is higher than 0 \u00b0 C, many commercial PP materials<\/a><\/strong> are random copolymers of 1 to 4% ethylene or a clamp copolymer of a higher ratio of ethylene. The copolymer type PP material has a low heat distortion temperature (100 \u00b0 C), low transparency, low gloss, low rigidity, but has a stronger impact strength. <\/p>

The strength of PP increases as the ethylene content increases. The Vicat softening temperature of PP is 150 \u00b0C. Due to the high degree of crystallinity, this material has excellent surface stiffness and scratch resistance. There is no environmental stress cracking problem in PP. The PP is usually modified by adding glass fibers, metal additives or thermoplastic rubber.<\/p>

A taxa de fluxo do PP tem um MFR que varia de 1 a 40. Materiais de PP com baixo MFR t\u00eam melhor resist\u00eancia ao impacto, mas menor elonga\u00e7\u00e3o. Para materiais com o mesmo MFR, a resist\u00eancia do tipo copol\u00edmero \u00e9 maior do que a do tipo homopol\u00edmero. \"M\u00e1quina<\/p>

Due to crystallization, the shrinkage rate of PP is quite high, generally 1.8 to 2.5%. And the direction uniformity of shrinkage is much better than materials such as PE-HD. <\/p>

The addition of 30% glass additive can reduce the shrinkage to 0.7%. Both the homopolymer type and the copolymer type PP materials have excellent moisture absorption resistance, acid and alkali corrosion resistance, and solubility resistance. However, it is not resistant to aromatic hydrocarbons (such as benzene) solvents, hydrogen chloride (carbon tetrachloride) solvents, and the like. <\/p>

PP does not have oxidation resistance at high temperatures like PE, and it is harmful to the human body.<\/p>

Copos descart\u00e1veis usados no dia a dia s\u00e3o geralmente feitos de pl\u00e1sticos PC e PP.<\/h3>

PC \u00e9 um material de engenharia amorfo com excepcional resist\u00eancia ao impacto, estabilidade t\u00e9rmica, brilho, inibi\u00e7\u00e3o bacteriana, propriedades retardantes de chama e resist\u00eancia a manchas. A lacuna do PC<\/p>

A resist\u00eancia \u00e9 muito alta e a taxa de encolhimento \u00e9 muito baixa, geralmente de 0,1% a 0,2%. O PC tem boas propriedades mec\u00e2nicas, mas as caracter\u00edsticas de fluxo s\u00e3o ruins, ent\u00e3o isso<\/p>

O processo de moldagem por inje\u00e7\u00e3o de materiais \u00e9 dif\u00edcil. Ao escolher qual material de PC de qualidade usar, deve-se basear nas expectativas finais do produto. Se a pe\u00e7a pl\u00e1stica requer alta resist\u00eancia ao impacto, ent\u00e3o use um fluxo baixo.<\/p>

Material PC cin\u00e9tico; por outro lado, materiais PC de alta taxa de fluxo podem ser usados para otimizar o processo de moldagem por inje\u00e7\u00e3o.<\/p>

PP polipropileno: temperatura de fus\u00e3o: 220~275 \u00b0C.<\/p>","protected":false},"excerpt":{"rendered":"

Disposable cups used in daily life are generally made from PP polypropylene or PC plastic. This article compares PP\u2019s crystallinity, heat resistance, shrinkage, chemical resistance, and impact strength with PC\u2019s strong impact performance, thermal stability, flame retardance, and injection molding challenges, highlighting key material properties relevant to plastic cup production.<\/p>","protected":false},"author":1,"featured_media":490,"parent":0,"template":"","tags":[81],"info-type":[2],"class_list":["post-480","info","type-info","status-publish","has-post-thumbnail","hentry","tag-pp-pe-flake-products-recycling-and-pelletizing-machine","info-type-news"],"taxonomy_info":{"post_tag":[{"value":81,"label":"PP PE flake products recycling and pelletizing machine"}],"info-type":[{"value":2,"label":"Case & News"}]},"featured_image_src_large":["https:\/\/www.recycle-plant.com\/wp-content\/uploads\/2018\/11\/PP-PE-flake-products-recycling-and-pelletizing-machine6.jpg",720,540,false],"author_info":{"display_name":"Ella","author_link":"https:\/\/www.recycle-plant.com\/pt\/author\/admin\/"},"comment_info":"","_links":{"self":[{"href":"https:\/\/www.recycle-plant.com\/pt\/wp-json\/wp\/v2\/info\/480","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.recycle-plant.com\/pt\/wp-json\/wp\/v2\/info"}],"about":[{"href":"https:\/\/www.recycle-plant.com\/pt\/wp-json\/wp\/v2\/types\/info"}],"author":[{"embeddable":true,"href":"https:\/\/www.recycle-plant.com\/pt\/wp-json\/wp\/v2\/users\/1"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.recycle-plant.com\/pt\/wp-json\/wp\/v2\/media\/490"}],"wp:attachment":[{"href":"https:\/\/www.recycle-plant.com\/pt\/wp-json\/wp\/v2\/media?parent=480"}],"wp:term":[{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.recycle-plant.com\/pt\/wp-json\/wp\/v2\/tags?post=480"},{"taxonomy":"info-type","embeddable":true,"href":"https:\/\/www.recycle-plant.com\/pt\/wp-json\/wp\/v2\/info-type?post=480"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}