《包裝工藝學十一章》ppt課件(文件)
【正文】 R0 =∑R iXi=R1X1+R2X2+R3X3+R4X4 R0 =+0++0= ； LOGO ?② 聚苯乙烯的裹包 面積為 A: A=[π （ 30） 2 2]+（ π 60 100） ≈24505cm 2 ； ?③ 儲存時間 t為： t=W﹒c﹒R0﹒ln[(T 0T2)/(T1T2)] /A t=225 3760 ln[(353283)/(313283)]/24505 t= t≈ ?設計時的思考 ?(1) 考慮被包裝物品的特點； ?(2) 選擇阻隔性能優(yōu)越的材料。 Contents mall developed by Guild Design Inc. ThemeGallery is a Design Digital Content amp。 Contents mall developed by Guild Design Inc. ThemeGallery is a Design Digital Content amp。 Contents mall developed by Guild Design Inc. Text in here Text in here Text in here LOGO Progress Diagram Your text in here Your text in here Your text in here Your text in here Your text in here Your text in here Text in here ? Add your text in here ? Add your text in here LOGO Block Diagram Text in here Text in here Text in here Text in here Text in here Text in here 95% Text in here Description of the contents 80% Text in here Description of the contents 70% Text in here Description of the contents 45% Text in here Description of the contents 37% Text in here Description of the contents 16% Text in here Description of the contents LOGO 3D Pie Chart Add your text Add your text Add your text Add your text Add your text Your Slogan here LOGO D Group Text Text Text Text Product_24% B Group Product_76% A Group Product_50% C Group Product_38% Diagram LOGO Diagram ThemeGallery is a Design Digital Content amp。 Contents mall developed by Guild Design Inc. 。 Contents mall developed by Guild Design Inc. ThemeGallery is a Design Digital Content amp。 Contents mall developed by Guild Design Inc. Text in here ThemeGallery is a Design Digital Content amp。 Contents mall developed by Guild Design Inc. LOGO Diagram Text in here ? Add your text in here ? Add your text in here ? Add your text in here ? Add your text in here ? Add your text in here ? Add your text in here ? Add your text in here ? Add your text in here ? Add your text in here ThemeGallery is a Design Digital Content amp。 Contents mall developed by Guild Design Inc. LOGO Diagram 50% 24% 10% 16% 50% 24% 16% 10% Products Description of the pany’s products Service Description of the pany’s service Technology Description of the pany’s technology Market Description of the pany’s market LOGO Marketing Diagram ThemeGallery is a Design Digital Content amp。 R0－總阻熱系數(shù) , ； LOGO ?例 115 某種對溫度敏感的液體在外徑 、高 1m的鐵桶腫，兩者共重 225kg，并用 5cm的發(fā)泡聚苯乙烯阻隔熱傳導。 c – 比熱容 , ； t 時間， h。 A 面積， cm2 ； x 厚度 , cm； T2 包裝外界溫度 ,K。 LOGO 第四節(jié) 阻熱包裝工藝 ?一、阻熱包裝與導熱定律 ?阻熱包裝定義： 采取一定 的防護措施，例如在包裝容器 內(nèi)放阻熱材料和阻熱介質(zhì)，以 減少包裝內(nèi)部與外界環(huán)境的熱 傳導，使被包裝的物品在規(guī)定 的時間內(nèi)，仍保持原來的狀態(tài) 和性質(zhì)。 LOGO ?放射性物品的包裝： 選擇能屏蔽掉或使放射線衰減到對人體或環(huán)境無害的包裝材料或防范措施。 ?(2)防爆包裝： 防止爆炸內(nèi)裝物發(fā)生爆炸。 ?(2)集裝袋規(guī)格 、 1噸、 、 2噸、 4噸和 10噸。 ? 托盤的 種類和規(guī)格 ?(1)托盤的 種類 ① 按用
教學課件相關(guān)推薦
鄂ICP備17016276號-1