濟南塑料袋材質抉擇：適配產品的關鍵

來源：http://www.rxtmedia.com/ 日期：2025-05-07

聚乙烯（PE）材質：作為世界公認的接觸食品材料，聚乙烯材質的塑料袋、無味、無臭，完全符合食品包裝衛生標準。它具有出色的防潮性能，能夠有效阻擋外界濕氣侵入，保持食品的干燥與新鮮。在抗氧方面，PE 塑料袋也有不錯的表現，可延長食品的保質期。其耐酸、耐堿特性，使其在接觸一些帶有酸堿性質的物品時，不易被腐蝕損壞。PE 塑料袋耐寒性能良好，在低溫環境下依然能保持一定的柔韌性，不會變脆破裂。不過，其氣密性相對一般，熱封性雖優異，但對于一些對氣密性要求極高的產品來說，可能需要進一步改進。在實際應用中，PE 塑料袋常用于電子、電器、五金、塑膠、服裝、鞋子等產品的包裝，尤其是食品包裝領域，如各類零食包裝袋、生鮮食品保鮮袋等。

Polyethylene (PE) material: As the world's recognized best material for contact with food, polyethylene plastic bags are non-toxic, odorless, and completely comply with food packaging hygiene standards. It has excellent moisture resistance and can effectively block external moisture from entering, keeping food dry and fresh. In terms of antioxidant properties, PE plastic bags also have good performance, which can extend the shelf life of food. Its acid and alkali resistance properties make it less susceptible to corrosion and damage when in contact with objects with acidic or alkaline properties. PE plastic bags have good cold resistance and can still maintain a certain degree of flexibility in low temperature environments without becoming brittle or breaking. However, its airtightness is relatively average, and although its heat sealing performance is excellent, for some products that require extremely high airtightness, further improvement may be needed. In practical applications, PE plastic bags are commonly used for packaging electronic, electrical, hardware, plastic, clothing, shoes and other products, especially in the field of food packaging, such as various snack packaging bags, fresh food preservation bags, etc.

聚丙烯（PP）材質：PP 塑料袋俗稱 “百折膠”，根據引發劑和聚合工藝的不同，分為等規聚丙烯和無規聚丙烯。等規聚丙烯易形成結晶態，結晶度高達 95% 以上，分子量在 8 - 15 萬之間，這賦予了它良好的抗熱和抗溶劑性。無規聚丙烯在室溫下是一種非結晶的、微帶粘性的白色蠟狀物，分子量低，在 3000 - 10000，結構不規整缺乏內聚力，應用相對較少。PP 塑料袋袋身較硬，但透明度比較高，呈現出清晰的視覺效果，并且具有熱封性，流延高溫膜適用于蒸煮包裝。在生活中，PP 材料常用于水管、包裝膠袋、玩具、醫療器材等成型品的包裝，例如一些硬質的塑料玩具包裝袋、醫療用品包裝袋等。

Polypropylene (PP) material: PP plastic bags, commonly known as "100 fold glue", are divided into isotactic polypropylene and random polypropylene according to different initiators and polymerization processes. Isotactic polypropylene is prone to forming crystalline states, with a crystallinity of over 95% and a molecular weight between 80000 and 150000, which endows it with excellent heat and solvent resistance. Random polypropylene is a non crystalline, slightly viscous white wax like substance at room temperature, with a low molecular weight ranging from 3000 to 10000. Its structure is irregular and lacks cohesion, making it relatively less commonly used. PP plastic bags have a relatively hard body, but high transparency, presenting a clear visual effect, and have heat sealing properties. The cast high-temperature film is suitable for steaming and cooking packaging. In daily life, PP material is commonly used for packaging molded products such as water pipes, packaging bags, toys, medical equipment, etc., such as some hard plastic toy packaging bags, medical supplies packaging bags, etc.

聚氯乙烯（PVC）材質：PVC 塑料袋具有耐熱性、韌性和延展性。其表面膜的上層是漆，中間的主要成分是聚氯乙烯，下層是背涂粘合劑。PVC 是一種深受喜愛、頗為流行且廣泛應用的合成材料。然而，它的熱穩定性和耐光性較差，在 140℃以上即可開始分解并放出氯化氫（HCl）氣體，致使 PVC 變色。不過，其電絕緣性優良，一般不會燃燒。PVC 塑料袋袋身有軟也有硬，可根據顧客需求訂料，透明度也可按需選擇，有超透明料、普通料和磨沙料等不同類型。它的拉力好，不容易扯爛，也不容易爆口。硬的 PVC 塑料袋常用于標簽制作，軟的則常用于手袋、化妝包、等包裝。

Polyvinyl chloride (PVC) material: PVC plastic bags have heat resistance, toughness, and ductility. The top layer of its surface facial mask is paint, the main component in the middle is PVC, and the bottom layer is back coated adhesive. PVC is a beloved, popular, and widely used synthetic material. However, its thermal stability and light resistance are poor, and it can start to decompose and release hydrogen chloride (HCl) gas above 140 ℃, causing PVC to change color. However, it has excellent electrical insulation and generally does not burn. The body of PVC plastic bags can be soft or hard, and can be customized according to customer needs. Transparency can also be selected according to needs, with different types such as ultra transparent materials, ordinary materials, and abrasive materials. It has good tensile strength, is not easily torn apart, and is not prone to bursting. Hard PVC plastic bags are commonly used for label making, while soft ones are commonly used for packaging bags such as handbags, makeup bags, and designer brands.

其他材質：

Other materials:

OPP 材質：OPP 塑料袋透明度極高，是所有常見塑料材質中為透亮的，具有防塵功能，能顯著提高被包裝產品的價值感。在產品展示中，可使產品一目了然，因此常用于商品銷售外包裝，起到防塵、保護、美化的作用。但它袋身脆，拉力弱，易爆口，且印刷容易脫色。在首飾、玉石、文具、玩具、餐具、廚房用具、服裝等領域的包裝中經常能看到 OPP 塑料袋的身影。

OPP material: OPP plastic bags have extremely high transparency and are the most transparent among all common plastic materials. They have dust-proof function and can significantly enhance the value of the packaged products. In product display, it can make the product clear at a glance, so it is commonly used for product sales packaging, which plays a role in dust prevention, protection, and beautification. But its bag body is the most brittle, with weak tensile strength, explosive mouth, and the printing is the easiest to fade. OPP plastic bags are often seen in packaging for jewelry, jade, stationery, toys, tableware, kitchen utensils, clothing, and other fields.

PO 材質：由高密度聚乙烯（HDPE）吹塑成型，，手感似蠟，具有優良的耐低溫性能（使用溫度可達 - 70 ~ - 100℃），化學穩定性好，能耐大多數酸堿的侵蝕，常溫下不溶于一般溶劑，吸水性小，電絕緣性能優良。不過，聚乙烯對于化學與機械作用較為敏感，耐熱老化性差。PO 塑料袋袋身較脆，透明度不夠高，比 PE 料要朦朧一些，有點透白色，拉力也不是很好，主要用于小鬧鐘、皮帶、電子表等的內包裝。

PO material: blow molded from high-density polyethylene (HDPE), non-toxic, with a wax like feel, excellent low temperature resistance (minimum operating temperature can reach -70~-100 ℃), good chemical stability, resistance to most acid and alkali corrosion, insoluble in general solvents at room temperature, low water absorption, and excellent electrical insulation performance. However, polyethylene is sensitive to chemical and mechanical reactions and has poor heat aging resistance. The body of the PO plastic bag is brittle, the transparency is not high enough, and it is slightly hazy compared to PE material. It is a bit translucent white and the tensile strength is not very good. It is mainly used for inner packaging of small alarms, belts, electronic watches, etc.

CPE 材質：CPE 塑料袋是電子產品常用的包裝膠袋，如 Ipad 平板電腦、Iphone 手機、PSP 掌上游戲機等。此類膠袋具有磨砂、光滑兩面，手感舒適柔軟，包裝呈現出高檔質感，是一種相對昂貴、可使產品顯得更高檔、更奢華的包裝袋。它也叫磨砂 EVA，呈半透明狀，具有消光、低毒、效果。

CPE material: CPE plastic bags are commonly used packaging bags for electronic products, such as iPad tablets, iPhone phones, PSP handheld game consoles, etc. This type of plastic bag has frosted and smooth sides, comfortable and soft feel, and presents a high-end texture in packaging. It is a relatively expensive packaging bag that can make products appear more upscale and luxurious. It is also called frosted EVA, which is semi transparent and has extinction, low toxicity, and environmental protection effects.

聚酯膜（PET）材質：PET 具有抗張力，耐熱 60 - 150 度，氣密性良好，適合蒸煮性，但沒有熱封性。它具有很好的光學性能、優良的耐磨耗摩擦性和尺寸穩定性及電絕緣性，強度大、透明性好、、防滲透、質量輕、生產效率高，因而受到廣泛應用。不過，PET 不適合獨立成型包裝袋，常作為各類食品、藥品、紡織品、精密儀器、電器元件等包裝表面的合成材料。

Polyester film (PET) material: PET has tensile strength, heat resistance of 60-150 degrees, good air tightness, suitable for steaming and boiling, but does not have heat sealing properties. It has good optical performance, excellent wear resistance, friction resistance, dimensional stability, and electrical insulation. It has high strength, good transparency, non toxicity, impermeability, light weight, and high production efficiency, and is therefore widely used. However, PET is not suitable for independently forming packaging bags and is often used as a synthetic material for packaging surfaces of various foods, drugs, textiles, precision instruments, electrical components, etc.

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