{"id":1843,"date":"2026-09-20T08:00:00","date_gmt":"2026-09-20T00:00:00","guid":{"rendered":"https:\/\/bastone-petrochem.com\/?p=1843"},"modified":"2026-09-20T08:00:00","modified_gmt":"2026-09-20T00:00:00","slug":"difference-between-cpp-and-bopp-plastic","status":"publish","type":"post","link":"https:\/\/bastone-petrochem.com\/es\/difference-between-cpp-and-bopp-plastic\/","title":{"rendered":"\u00bfCu\u00e1l es la diferencia entre el pl\u00e1stico CPP y BOPP?"},"content":{"rendered":"

CPP y BOPP son el mismo pol\u00edmero obtenido en dos l\u00edneas de pel\u00edcula diferentes: CPP es pel\u00edcula de polipropileno fundido, enfriada en un rodillo chill y nunca estirada, y BOPP es pel\u00edcula de polipropileno biaxialmente orientado, estirada en ambas direcciones despu\u00e9s del fundido. Ese \u00fanico paso es toda la diferencia, y las dos pel\u00edculas cumplen funciones opuestas \u2014 CPP sella, BOPP soporta impresi\u00f3n y rigidez.<\/p>\n

Qu\u00e9 Es CPP<\/h2>\n

CPP es pel\u00edcula de polipropileno fundido \u2014 polipropileno fundido extruido a trav\u00e9s de una boquilla plana sobre un rodillo enfriado, recortado en los bordes y bobinado, sin paso de estiramiento en la l\u00ednea.<\/p>\n

\u201cPel\u00edcula de PP\u201d en una consulta es un t\u00e9rmino general y CPP es una ruta bajo \u00e9l: GCPP, MCPP y RCPP nombran las versiones de uso general, metalizable y retorta. La pel\u00edcula fundida se especifica en decenas a bajos cientos de micras.<\/p>\n

Qu\u00e9 resina entra se decide capa por capa, y las tres familias de PP<\/a> tienen grados de pel\u00edcula fundida. Una web de uso general corre con homopol\u00edmero a alrededor de 8 g\/10 min de \u00edndice de fluidez (230 \u00b0C \/ 2.16 kg, ISO 1133), mientras que los grados de copol\u00edmero aleatorio compran \u00f3ptica, suavidad y soldadura m\u00e1s f\u00e1cil. Los grados de retorta vendidos como RCPP se construyen sobre copol\u00edmeros de impacto, sin importar lo que sugiera el nombre.<\/p>\n

La cara de sellado es otra resina de nuevo: una estructura fundida se coextruye con una piel de terpol\u00edmero o copol\u00edmero aleatorio de alto comon\u00f3mero<\/a> que comienza a sellar muy por debajo de la temperatura a la que el n\u00facleo se ablandar\u00eda.<\/p>\n

Qu\u00e9 Es BOPP<\/h2>\n

BOPP es pel\u00edcula de polipropileno biaxialmente orientado \u2014 una hoja fundida recalentada y estirada en la direcci\u00f3n de la m\u00e1quina y luego transversalmente, de modo que las cadenas se alinean en ambas direcciones. Una l\u00ednea de tenter toma los dos estiramientos en secuencia y es la ruta industrial com\u00fan; la ruta de doble burbuja estira ambas direcciones a la vez y va principalmente a pel\u00edcula retr\u00e1ctil y de envoltura.<\/p>\n

El n\u00facleo tiene que permanecer estirable, por lo que es un polipropileno homopol\u00edmero<\/a> a alrededor de 3 g\/10 min de \u00edndice de fluidez (230 \u00b0C \/ 2.16 kg, ISO 1133), menor fluidez que los grados fundidos de uso general. El sellado proviene de una capa separada: una piel coextruida de terpol\u00edmero o copol\u00edmero en una o ambas caras, o un recubrimiento.<\/p>\n

Las familias de grados son variaciones superficiales sobre ese \u00fanico proceso: pel\u00edculas lisas, termosellables, mate, perladas, metalizadas, para etiquetas y cintas. Las cotizaciones y hojas de datos a menudo escriben OPP para la misma pel\u00edcula.<\/p>\n

La Diferencia Entre CPP y BOPP<\/h2>\n

La diferencia es la orientaci\u00f3n, y cada propiedad a continuaci\u00f3n se deriva de ella. La pel\u00edcula fundida permanece suave y de alto calibre, lo que la hace adecuada para la cara de sellado. La pel\u00edcula orientada sale delgada, r\u00edgida y transparente, y soporta la impresi\u00f3n y la resistencia.<\/p>\n

Termosellado<\/h3>\n

La ventaja de CPP en el sellado es la resistencia, y es grande. A 25 \u00b5m, el CPP sellable de un productor soporta una resistencia m\u00ednima de sellado de 1,800 g\/25 mm frente a 375 g\/25 mm para su BOPP termosellable \u2014 mismo laboratorio, mismo m\u00e9todo interno, mismo calibre.<\/p>\n

La temperatura de sellado no divide a los dos como suele contar el comercio. En esas mismas hojas la piel de sellado de BOPP comienza a sellar a 105 \u00b0C y el CPP est\u00e1ndar a 118 \u00b0C. El CPP de retorta sella solo desde 150 \u00b0C.<\/p>\n

Rigidez, Claridad y Barrera a la Humedad<\/h3>\n

A igual calibre la pel\u00edcula orientada lidera en rigidez, claridad y barrera a la humedad, y la pel\u00edcula fundida lidera en estiramiento. Las cifras a continuaci\u00f3n son grados termosellables de un productor, ambos medidos en un laboratorio a 25 \u00b5m.<\/p>\n\n\n\n\n\n\n\n\n\n\n
Propiedad (m\u00e9todo, condici\u00f3n)<\/th>\nBOPP, 25 \u00b5m<\/th>\nCPP, 25 \u00b5m<\/th>\n<\/tr>\n<\/thead>\n
Resistencia a la tracci\u00f3n en rotura, MD \/ TD (ASTM D882)<\/td>\n1,200 \/ 2,500 kg\/cm\u00b2<\/td>\n500 \/ 210 kg\/cm\u00b2<\/td>\n<\/tr>\n
Alargamiento en rotura, MD \/ TD (ASTM D882)<\/td>\n200 % \/ 60 %<\/td>\n450 % \/ 600 %<\/td>\n<\/tr>\n
Turbidez (ASTM D1003)<\/td>\n2.7 %<\/td>\n3.3 %<\/td>\n<\/tr>\n
Brillo a 45\u00b0 (ASTM D2457)<\/td>\n85 unidades<\/td>\n80 unidades<\/td>\n<\/tr>\n
WVTR (ASTM F1249, 38 \u00b0C, 90 % RH)<\/td>\n0 g\/m\u00b2\/d\u00eda<\/td>\n12 g\/m\u00b2\/d\u00eda<\/td>\n<\/tr>\n
OTR (ASTM D3985, 23 \u00b0C, 0 % RH)<\/td>\n1,700 cc\/m\u00b2\/d\u00eda<\/td>\n3,650 cc\/m\u00b2\/d\u00eda<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

La rigidez los separa m\u00e1s que la resistencia: en las hojas de un convertidor la pel\u00edcula orientada lee aproximadamente el doble del m\u00f3dulo secante de la pel\u00edcula fundida en la direcci\u00f3n de la m\u00e1quina y aproximadamente cuatro veces transversalmente, seg\u00fan ASTM D882. El alargamiento en rotura de la pel\u00edcula fundida es lo que el comercio llama vagamente su resistencia al desgarro y a la perforaci\u00f3n.<\/p>\n

La afirmaci\u00f3n familiar de que el CPP es la mejor barrera a la humedad porque corre m\u00e1s grueso no se sostiene. El CPP m\u00e1s grueso en esa hoja, 80 \u00b5m, todav\u00eda transmite 7 g\/m\u00b2\/d\u00eda frente a 6.0 para BOPP a 25 \u00b5m; una capa sellante fundida a\u00f1ade barrera en proporci\u00f3n a su calibre y nada m\u00e1s. Ninguna de las dos pel\u00edculas es una barrera al ox\u00edgeno \u2014 una capa metalizada o de EVOH proporciona eso.<\/p>\n

Ambas pel\u00edculas llegan tratadas con corona a 38 dina\/cm, y el tratamiento se degrada en el rollo.<\/p>\n

C\u00f3mo Elegir La Correcta<\/h2>\n

En la mayor\u00eda de los envases flexibles no eliges una \u2014 especificas ambas. BOPP es la web exterior que soporta impresi\u00f3n, brillo y rigidez y CPP el sellante interior: BOPP\/CPP para productos secos, BOPP\/VMCPP donde el envase necesita una barrera ligera y al ox\u00edgeno, PET\/RCPP para retorta. El grado de sellante es entonces una cuesti\u00f3n de la l\u00ednea y el producto \u2014 temperatura de mordaza y tiempo de permanencia a velocidad de funcionamiento, y si el envase es de retorta o congelado.<\/p>\n

Una pel\u00edcula mono es correcta donde una de las dos funciones est\u00e1 ausente. BOPP solo va a cinta, etiquetas, envoltura y envoltura retorcida; CPP solo a bolsas de pan y productos, bolsas de prendas y trabajo de impresi\u00f3n directa.<\/p>\n

En costo, mant\u00e9n dos bases separadas. BOPP pasa por el paso de conversi\u00f3n extra, por lo que cuesta m\u00e1s por kilogramo convertido; ambas pel\u00edculas miden 0.91 g\/cc, por lo que cualquier ventaja de rendimiento que tenga BOPP proviene de correr m\u00e1s delgado a igual funci\u00f3n, no de pesar menos.<\/p>\n

La reciclabilidad es una propiedad de la estructura terminada. Un laminado BOPP\/CPP todo-PP se sit\u00faa en la caja compatible de ambas gu\u00edas de dise\u00f1o \u2014 RecyClass agrupa PP orientado y no orientado como un material, APR prefiere m\u00e1s de 90 % PP en peso \u2014 mientras que una capa de PET o foil lo saca de ambas. La pel\u00edcula metalizada los divide: RecyClass lista la metalizaci\u00f3n como no compatible, APR la permite por debajo de un umbral de \u00e1rea superficial.<\/p>","protected":false},"excerpt":{"rendered":"

CPP and BOPP are the same polymer taken down two different film lines: CPP is cast polypropylene film, quenched on a chill roll and never stretched, and BOPP is biaxially oriented polypropylene film, stretched in both directions after casting. That one step is the whole difference, and the two films do opposite jobs \u2014 CPP […]<\/p>\n","protected":false},"author":4,"featured_media":0,"comment_status":"","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[1],"tags":[],"class_list":["post-1843","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"blocksy_meta":[],"acf":[],"yoast_head":"\nWhat Is the Difference Between CPP and BOPP Plastic - BASTONE<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/bastone-petrochem.com\/es\/difference-between-cpp-and-bopp-plastic\/\" \/>\n<meta property=\"og:locale\" content=\"es_ES\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"What Is the Difference Between CPP and BOPP Plastic - BASTONE\" \/>\n<meta property=\"og:description\" content=\"CPP and BOPP are the same polymer taken down two different film lines: CPP is cast polypropylene film, quenched on a chill roll and never stretched, and BOPP is biaxially oriented polypropylene film, stretched in both directions after casting. That one step is the whole difference, and the two films do opposite jobs \u2014 CPP […]\" \/>\n<meta property=\"og:url\" content=\"https:\/\/bastone-petrochem.com\/es\/difference-between-cpp-and-bopp-plastic\/\" \/>\n<meta property=\"og:site_name\" content=\"BASTONE\" \/>\n<meta property=\"article:published_time\" content=\"2026-09-20T00:00:00+00:00\" \/>\n<meta name=\"author\" content=\"Stoneexpert\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\/\/bastone-petrochem.com\/difference-between-cpp-and-bopp-plastic\/#article\",\"isPartOf\":{\"@id\":\"https:\/\/bastone-petrochem.com\/difference-between-cpp-and-bopp-plastic\/\"},\"author\":{\"name\":\"Stoneexpert\",\"@id\":\"https:\/\/bastone-petrochem.com\/#\/schema\/person\/e7ac5c8da49e0875ec220147ea11b63b\"},\"headline\":\"What Is the Difference Between CPP and BOPP Plastic\",\"datePublished\":\"2026-09-20T00:00:00+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\/\/bastone-petrochem.com\/difference-between-cpp-and-bopp-plastic\/\"},\"wordCount\":940,\"publisher\":{\"@id\":\"https:\/\/bastone-petrochem.com\/#organization\"},\"articleSection\":[\"Uncategorized\"],\"inLanguage\":\"es\"},{\"@type\":\"WebPage\",\"@id\":\"https:\/\/bastone-petrochem.com\/difference-between-cpp-and-bopp-plastic\/\",\"url\":\"https:\/\/bastone-petrochem.com\/difference-between-cpp-and-bopp-plastic\/\",\"name\":\"What Is the Difference Between CPP and BOPP Plastic - BASTONE\",\"isPartOf\":{\"@id\":\"https:\/\/bastone-petrochem.com\/#website\"},\"datePublished\":\"2026-09-20T00:00:00+00:00\",\"breadcrumb\":{\"@id\":\"https:\/\/bastone-petrochem.com\/difference-between-cpp-and-bopp-plastic\/#breadcrumb\"},\"inLanguage\":\"es\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/bastone-petrochem.com\/difference-between-cpp-and-bopp-plastic\/\"]}]},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/bastone-petrochem.com\/difference-between-cpp-and-bopp-plastic\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\/\/bastone-petrochem.com\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"What Is the Difference Between CPP and BOPP Plastic\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\/\/bastone-petrochem.com\/#website\",\"url\":\"https:\/\/bastone-petrochem.com\/\",\"name\":\"BASTONE\",\"description\":\"\",\"publisher\":{\"@id\":\"https:\/\/bastone-petrochem.com\/#organization\"},\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\/\/bastone-petrochem.com\/?s={search_term_string}\"},\"query-input\":{\"@type\":\"PropertyValueSpecification\",\"valueRequired\":true,\"valueName\":\"search_term_string\"}}],\"inLanguage\":\"es\"},{\"@type\":\"Organization\",\"@id\":\"https:\/\/bastone-petrochem.com\/#organization\",\"name\":\"BASTONE\",\"url\":\"https:\/\/bastone-petrochem.com\/\",\"logo\":{\"@type\":\"ImageObject\",\"inLanguage\":\"es\",\"@id\":\"https:\/\/bastone-petrochem.com\/#\/schema\/logo\/image\/\",\"url\":\"https:\/\/bastone-petrochem.com\/wp-content\/uploads\/2022\/12\/cropped-site_icon-1.png\",\"contentUrl\":\"https:\/\/bastone-petrochem.com\/wp-content\/uploads\/2022\/12\/cropped-site_icon-1.png\",\"width\":512,\"height\":512,\"caption\":\"BASTONE\"},\"image\":{\"@id\":\"https:\/\/bastone-petrochem.com\/#\/schema\/logo\/image\/\"}},{\"@type\":\"Person\",\"@id\":\"https:\/\/bastone-petrochem.com\/#\/schema\/person\/e7ac5c8da49e0875ec220147ea11b63b\",\"name\":\"Stoneexpert\",\"image\":{\"@type\":\"ImageObject\",\"inLanguage\":\"es\",\"@id\":\"https:\/\/bastone-petrochem.com\/#\/schema\/person\/image\/\",\"url\":\"https:\/\/secure.gravatar.com\/avatar\/ccbc3bd4b33231373976b8b8852b2182bef518e4e4af70fdf506c36010f421ec?s=96&d=mm&r=g\",\"contentUrl\":\"https:\/\/secure.gravatar.com\/avatar\/ccbc3bd4b33231373976b8b8852b2182bef518e4e4af70fdf506c36010f421ec?s=96&d=mm&r=g\",\"caption\":\"Stoneexpert\"},\"url\":\"https:\/\/bastone-petrochem.com\/es\/author\/zmd88259886gmail-com\/\"}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"\u00bfCu\u00e1l es la diferencia entre el pl\u00e1stico CPP y BOPP? - BASTONE","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/bastone-petrochem.com\/es\/difference-between-cpp-and-bopp-plastic\/","og_locale":"es_ES","og_type":"article","og_title":"What Is the Difference Between CPP and BOPP Plastic - BASTONE","og_description":"CPP and BOPP are the same polymer taken down two different film lines: CPP is cast polypropylene film, quenched on a chill roll and never stretched, and BOPP is biaxially oriented polypropylene film, stretched in both directions after casting. 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