{"id":1382,"date":"2026-02-17T05:57:31","date_gmt":"2026-02-17T05:57:31","guid":{"rendered":"https:\/\/oto.ir\/blog\/?p=1382"},"modified":"2026-02-21T11:59:40","modified_gmt":"2026-02-21T11:59:40","slug":"determining-the-number-of-layers-of-rubber-and-its-modern-concepts","status":"publish","type":"post","link":"https:\/\/oto.ir\/blog\/determining-the-number-of-layers-of-rubber-and-its-modern-concepts\/","title":{"rendered":"\u062a\u0634\u062e\u06cc\u0635 \u062a\u0639\u062f\u0627\u062f \u0644\u0627\u06cc\u0647\u200c\u0647\u0627\u06cc \u0644\u0627\u0633\u062a\u06cc\u06a9 \u0648 \u0645\u0641\u0627\u0647\u06cc\u0645 \u0645\u062f\u0631\u0646 \u0622\u0646"},"content":{"rendered":"

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<\/h2>\n

\"\"<\/p>\n

\u0642\u06cc\u0645\u062a \u06af\u0630\u0627\u0631\u06cc \u062e\u0648\u062f\u0631\u0648<\/strong><\/a><\/p>\n

\u062f\u0631\u06a9 \u0634\u0627\u062e\u0635\u200c\u0647\u0627\u06cc PR \u0648 LR \u062f\u0631 \u0644\u0627\u0633\u062a\u06cc\u06a9\u200c\u0647\u0627<\/h2>\n

\u062f\u0631 \u0644\u0627\u0633\u062a\u06cc\u06a9\u200c\u0647\u0627\u06cc \u0645\u062f\u0631\u0646\u060c \u062f\u0631\u062c\u0647 PR (Ply Rating) \u0628\u0627 \u0646\u0645\u0627\u062f\u0647\u0627\u06cc\u06cc \u0645\u0627\u0646\u0646\u062f \u00a06PR \u06cc\u0627 \u00a08PR \u0645\u0634\u062e\u0635 \u0645\u06cc\u200c\u0634\u0648\u062f. \u0628\u0647 \u0639\u0646\u0648\u0627\u0646 \u0645\u062b\u0627\u0644\u060c 6PR \u0628\u0647 \u0627\u06cc\u0646 \u0645\u0639\u0646\u0627\u0633\u062a \u06a9\u0647 \u0627\u0633\u062a\u062d\u06a9\u0627\u0645 \u0627\u06cc\u0646 \u062a\u0627\u06cc\u0631 \u062a\u0642\u0631\u06cc\u0628\u0627\u064b \u0645\u0639\u0627\u062f\u0644 \u06cc\u06a9 \u0644\u0627\u0633\u062a\u06cc\u06a9 \u0642\u062f\u06cc\u0645\u06cc \u0628\u0627 \u06f6 \u0644\u0627\u06cc\u0647 \u0646\u062e \u0627\u0633\u062a\u061b \u0627\u0645\u0627 \u062f\u0631 \u0639\u0645\u0644\u060c \u0645\u0645\u06a9\u0646 \u0627\u0633\u062a \u0627\u06cc\u0646 \u0644\u0627\u0633\u062a\u06cc\u06a9 \u06a9\u0645\u062a\u0631 \u0627\u0632 \u06f6 \u0644\u0627\u06cc\u0647 \u0648\u0627\u0642\u0639\u06cc \u062f\u0627\u0634\u062a\u0647 \u0628\u0627\u0634\u062f\u060c \u0632\u06cc\u0631\u0627 \u0644\u0627\u06cc\u0647\u200c\u0647\u0627 \u0627\u0645\u0631\u0648\u0632\u0647 \u0627\u0632 \u0633\u06cc\u0645\u200c\u0647\u0627\u06cc \u0641\u0648\u0644\u0627\u062f\u06cc \u0648 \u0645\u0648\u0627\u062f \u067e\u06cc\u0634\u0631\u0641\u062a\u0647 \u062a\u0634\u06a9\u06cc\u0644 \u0634\u062f\u0647\u200c\u0627\u0646\u062f.<\/p>\n

\u0646\u0645\u0627\u062f \u0645\u062d\u062f\u0648\u062f\u0647 \u0628\u0627\u0631 ( Load Range \u06cc\u0627 LR ) \u0634\u0627\u062e\u0635\u06cc \u062f\u0642\u06cc\u0642\u200c\u062a\u0631 \u0628\u0631\u0627\u06cc \u0633\u0646\u062c\u0634 \u0638\u0631\u0641\u06cc\u062a \u0628\u0627\u0631\u0628\u0631\u06cc \u062a\u0627\u06cc\u0631 \u0627\u0633\u062a \u0648 \u0628\u0647 \u062d\u062f\u0627\u06a9\u062b\u0631 \u0648\u0632\u0646\u06cc \u06a9\u0647 \u0644\u0627\u0633\u062a\u06cc\u06a9 \u0645\u06cc\u200c\u062a\u0648\u0627\u0646\u062f \u062f\u0631 \u0641\u0634\u0627\u0631 \u0628\u0627\u062f \u0645\u0634\u062e\u0635 \u062a\u062d\u0645\u0644 \u06a9\u0646\u062f\u060c \u0627\u0634\u0627\u0631\u0647 \u062f\u0627\u0631\u062f. \u0627\u06cc\u0646 \u0634\u0627\u062e\u0635\u060c \u062c\u0627\u06cc\u06af\u0632\u06cc\u0646 PR \u062f\u0631 \u0628\u0633\u06cc\u0627\u0631\u06cc \u0627\u0632 \u0644\u0627\u0633\u062a\u06cc\u06a9\u200c\u0647\u0627\u060c \u0628\u0647\u200c\u0648\u06cc\u0698\u0647 \u062e\u0648\u062f\u0631\u0648\u0647\u0627\u06cc \u0633\u0646\u06af\u06cc\u0646\u060c \u0634\u062f\u0647 \u0627\u0633\u062a. \u062d\u0631\u0648\u0641 \u0631\u0648\u0628\u0647\u200c\u0631\u0648\u06cc LR (\u0645\u062b\u0644 C\u060c D\u060c E) \u0645\u0639\u0627\u062f\u0644 \u0639\u062f\u062f PR \u0647\u0633\u062a\u0646\u062f \u0648 \u0647\u0631\u0686\u0647 \u0639\u062f\u062f \u06cc\u0627 \u062d\u0631\u0641 \u0628\u0627\u0644\u0627\u062a\u0631 \u0628\u0627\u0634\u062f\u060c \u0644\u0627\u0633\u062a\u06cc\u06a9 \u0627\u0633\u062a\u062d\u06a9\u0627\u0645 \u0628\u06cc\u0634\u062a\u0631\u06cc \u062f\u0627\u0631\u062f\u060c \u0645\u06cc\u200c\u062a\u0648\u0627\u0646\u062f \u0641\u0634\u0627\u0631 \u0628\u0627\u062f \u0628\u0627\u0644\u0627\u062a\u0631\u06cc \u0631\u0627 \u062a\u062d\u0645\u0644 \u06a9\u0646\u062f \u0648 \u0638\u0631\u0641\u06cc\u062a \u0628\u0627\u0631\u0628\u0631\u06cc \u0628\u06cc\u0634\u062a\u0631\u06cc \u0627\u0631\u0627\u0626\u0647 \u062f\u0647\u062f.<\/p>\n

\u062a\u0641\u0627\u0648\u062a \u062f\u0631 PR \u0648 LR \u0646\u0634\u0627\u0646\u200c\u062f\u0647\u0646\u062f\u0647 \u06a9\u06cc\u0641\u06cc\u062a \u0644\u0627\u06cc\u0647\u200c\u0647\u0627 \u0648 \u0645\u0648\u0627\u062f \u062f\u0627\u062e\u0644\u06cc \u062a\u0627\u06cc\u0631 \u0627\u0633\u062a. \u0628\u0631\u0627\u06cc \u0645\u062b\u0627\u0644\u060c \u06cc\u06a9 \u0644\u0627\u0633\u062a\u06cc\u06a9 \u0628\u0627 LR E ) \u0645\u0639\u0627\u062f\u0644 10PR) \u0642\u0627\u062f\u0631 \u0627\u0633\u062a \u0628\u0627\u0631 \u0628\u0633\u06cc\u0627\u0631 \u0633\u0646\u06af\u06cc\u0646\u200c\u062a\u0631\u06cc \u0646\u0633\u0628\u062a \u0628\u0647 \u00a0LR C (\u0645\u0639\u0627\u062f\u0644 6PR) \u062a\u062d\u0645\u0644 \u06a9\u0646\u062f\u060c \u062d\u062a\u06cc \u0627\u06af\u0631 \u0627\u0646\u062f\u0627\u0632\u0647 \u0647\u0631 \u062f\u0648 \u0644\u0627\u0633\u062a\u06cc\u06a9 \u06cc\u06a9\u0633\u0627\u0646 \u0628\u0627\u0634\u062f. \u0644\u0627\u0633\u062a\u06cc\u06a9\u200c\u0647\u0627\u06cc\u06cc \u0628\u0627 \u0634\u0627\u062e\u0635\u200c\u0647\u0627\u06cc \u0628\u0627\u0644\u0627\u062a\u0631\u060c \u062f\u06cc\u0648\u0627\u0631\u0647 \u062c\u0627\u0646\u0628\u06cc \u0633\u0641\u062a\u200c\u062a\u0631 \u0648 \u0645\u062d\u06a9\u0645\u200c\u062a\u0631\u06cc \u062f\u0627\u0631\u0646\u062f\u060c \u0645\u0642\u0627\u0648\u0645\u062a \u0628\u06cc\u0634\u062a\u0631\u06cc \u062f\u0631 \u0628\u0631\u0627\u0628\u0631 \u0633\u0648\u0631\u0627\u062e \u0634\u062f\u0646\u060c \u067e\u0627\u0631\u06af\u06cc \u0648 \u0622\u0633\u06cc\u0628\u200c\u0647\u0627\u06cc \u0646\u0627\u0634\u06cc \u0627\u0632 \u0641\u0634\u0627\u0631 \u0628\u0627\u0631 \u062f\u0627\u0631\u0646\u062f \u0648 \u0641\u0631\u0645\u0627\u0646\u200c\u067e\u0630\u06cc\u0631\u06cc \u0628\u0647\u062a\u0631\u06cc \u0627\u0631\u0627\u0626\u0647 \u0645\u06cc\u200c\u062f\u0647\u0646\u062f.<\/p>\n

\u0627\u0645\u0631\u0648\u0632\u0647\u060c \u0628\u0647 \u062c\u0627\u06cc \u062a\u0645\u0631\u06a9\u0632 \u0628\u0631 \u062a\u0639\u062f\u0627\u062f \u0641\u06cc\u0632\u06cc\u06a9\u06cc \u0644\u0627\u06cc\u0647\u200c\u0647\u0627\u060c PR \u00a0\u0648 LR \u062f\u0648 \u0634\u0627\u062e\u0635 \u06a9\u0644\u06cc\u062f\u06cc \u0648 \u0642\u0627\u0628\u0644 \u0627\u0639\u062a\u0645\u0627\u062f \u0628\u0631\u0627\u06cc \u062a\u0634\u062e\u06cc\u0635 \u0645\u0642\u0627\u0648\u0645\u062a \u0648 \u0638\u0631\u0641\u06cc\u062a \u0628\u0627\u0631 \u0644\u0627\u0633\u062a\u06cc\u06a9\u200c\u0647\u0627 \u0645\u062d\u0633\u0648\u0628 \u0645\u06cc\u200c\u0634\u0648\u0646\u062f. \u062e\u0648\u062f\u0631\u0648\u0647\u0627\u06cc \u0633\u0648\u0627\u0631\u06cc \u0645\u0639\u0645\u0648\u0644\u0627\u064b \u0627\u0632 \u0644\u0627\u0633\u062a\u06cc\u06a9\u200c\u0647\u0627\u06cc \u0628\u0627 LR B \u06cc\u0627 C \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u0645\u06cc\u200c\u06a9\u0646\u0646\u062f\u060c \u062f\u0631 \u062d\u0627\u0644\u06cc \u06a9\u0647 \u0645\u0627\u0634\u06cc\u0646\u200c\u0622\u0644\u0627\u062a \u0633\u0646\u06af\u06cc\u0646 \u0648 \u0631\u0627\u0647\u0633\u0627\u0632\u06cc \u0628\u0647 LR E \u0646\u06cc\u0627\u0632 \u062f\u0627\u0631\u0646\u062f. \u0648\u0627\u0646\u062a\u200c\u0647\u0627 \u0648 \u06a9\u0627\u0645\u06cc\u0648\u0646\u062a\u200c\u0647\u0627 \u0646\u06cc\u0632 \u0628\u0627\u06cc\u062f \u0627\u0632 \u0644\u0627\u0633\u062a\u06cc\u06a9\u200c\u0647\u0627\u06cc\u06cc \u0628\u0627 LR \u0628\u0627\u0644\u0627\u062a\u0631 (D \u06cc\u0627 E ) \u0628\u0647\u0631\u0647 \u0628\u0628\u0631\u0646\u062f \u062a\u0627 \u062f\u0631 \u062d\u0645\u0644 \u0628\u0627\u0631\u0647\u0627\u06cc \u0633\u0646\u06af\u06cc\u0646\u060c \u0627\u06cc\u0645\u0646\u06cc \u0648 \u062f\u0648\u0627\u0645 \u0644\u0627\u0633\u062a\u06cc\u06a9 \u062a\u0636\u0645\u06cc\u0646 \u0634\u0648\u062f.<\/p>\n

\u062a\u0645\u0631\u06a9\u0632 \u0631\u0648\u06cc \u00a0PR \u0648 LR \u0628\u0647 \u062c\u0627\u06cc \u062a\u0639\u062f\u0627\u062f \u0648\u0627\u0642\u0639\u06cc \u0644\u0627\u06cc\u0647\u200c\u0647\u0627\u060c \u06cc\u06a9 \u062a\u062d\u0648\u0644 \u0645\u0647\u0645 \u062f\u0631 \u0635\u0646\u0639\u062a \u062a\u0627\u06cc\u0631 \u0627\u0633\u062a. \u0627\u06cc\u0646 \u0634\u0627\u062e\u0635\u200c\u0647\u0627 \u0631\u0627\u0646\u0646\u062f\u0647 \u0631\u0627 \u0642\u0627\u062f\u0631 \u0645\u06cc\u200c\u0633\u0627\u0632\u0646\u062f \u0627\u0646\u062a\u062e\u0627\u0628\u06cc \u0622\u06af\u0627\u0647\u0627\u0646\u0647 \u0648 \u0627\u06cc\u0645\u0646 \u062f\u0627\u0634\u062a\u0647 \u0628\u0627\u0634\u062f \u0648 \u0638\u0631\u0641\u06cc\u062a \u0628\u0627\u0631 \u0648 \u0627\u0633\u062a\u062d\u06a9\u0627\u0645 \u0644\u0627\u0633\u062a\u06cc\u06a9 \u0631\u0627 \u062f\u0642\u06cc\u0642\u200c\u062a\u0631 \u0628\u0641\u0647\u0645\u062f. \u0648\u0627\u0642\u0639\u0627\u064b \u0627\u06cc\u0646 \u062a\u063a\u06cc\u06cc\u0631\u060c \u0647\u0645 \u0627\u06cc\u0645\u0646\u06cc \u0648 \u0647\u0645 \u06a9\u0627\u0631\u0627\u06cc\u06cc \u062e\u0648\u062f\u0631\u0648 \u0631\u0627 \u0628\u0647 \u0634\u06a9\u0644 \u0642\u0627\u0628\u0644 \u062a\u0648\u062c\u0647\u06cc \u0627\u0641\u0632\u0627\u06cc\u0634 \u0645\u06cc\u200c\u062f\u0647\u062f \u0648 \u0631\u0627\u0646\u0646\u062f\u06af\u06cc \u0628\u0627 \u062e\u0648\u062f\u0631\u0648\u0647\u0627\u06cc \u0633\u0646\u06af\u06cc\u0646 \u0648 \u0633\u0628\u06a9 \u0631\u0627 \u0645\u0637\u0645\u0626\u0646\u200c\u062a\u0631 \u0645\u06cc\u200c\u06a9\u0646\u062f.<\/p>\n

\u062e\u0631\u06cc\u062f \u062e\u0648\u062f\u0631\u0648 \u0627\u0642\u0633\u0627\u0637\u06cc<\/a>\u00a0<\/strong><\/h3>\n","protected":false},"excerpt":{"rendered":"

\u062a\u0639\u062f\u0627\u062f \u0644\u0627\u06cc\u0647\u200c\u0647\u0627\u06cc \u0644\u0627\u0633\u062a\u06cc\u06a9\u060c \u0628\u0647 \u0644\u0627\u06cc\u0647\u200c\u0647\u0627\u06cc \u062f\u0627\u062e\u0644\u06cc \u062a\u0627\u06cc\u0631 \u0627\u0634\u0627\u0631\u0647 \u062f\u0627\u0631\u062f \u06a9\u0647 \u0627\u0633\u062a\u062d\u06a9\u0627\u0645 \u0648 \u0634\u06a9\u0644 \u0622\u0646 \u0631\u0627 \u062a\u0639\u06cc\u06cc\u0646 \u0645\u06cc\u200c\u06a9\u0646\u0646\u062f. \u0627\u06cc\u0646 \u0627\u0635\u0637\u0644\u0627\u062d \u062f\u0631 […]<\/p>\n","protected":false},"author":11,"featured_media":1384,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","theme-transparent-header-meta":"default","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"set","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center 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