一、PE袋是什么

1、 What is PE bag

袋是一種透明的塑料袋，可用于箱包、服裝、電子產品等外包裝，而其中PE是聚乙烯的簡稱，是乙烯經過聚合制成一種熱塑性樹脂……

Bag is a transparent plastic bag, which can be used for external packaging of luggage, clothing and electronic products. PE is the abbreviation of polyethylene, which is a thermoplastic resin made of ethylene through polymerization.

二、PE袋是特性

2、 PE bags are characteristic

袋外觀透明，卻又有霧化感；手感柔軟，有耐性；耐低溫功能好，防潮性好，但關于氧氣、空氣的阻隔率卻低；能耐大多數酸堿的腐蝕（氧化性質的酸除外），在常溫下不溶于一般的溶劑，吸水性小，電絕緣性能好； PE袋本身的印刷功能差，但通過改造或處理，可承印淺色，不建議大面積深色印刷。

The appearance of the bag is transparent, but it has a sense of atomization; Feel soft and patient; Good low temperature resistance and moisture resistance, but the barrier rate of oxygen and air is low; It can resist the corrosion of most acids and bases (except oxidizing acids), is insoluble in general solvents at room temperature, has small water absorption and good electrical insulation performance; The printing function of PE bag itself is poor, but through transformation or treatment, it can print light colors, and large-area dark printing is not recommended.

三、PE袋在食物包裝常用的分類。

3、 PE bags are commonly used in food packaging.

依照生產工藝分可分為三類：高密度HDPE、密度低LDPE、線性密度低LLDPE。不一樣的密度在食物包裝袋中的應用側重也各不相同，功能也有點差別。

According to the production process, it can be divided into three categories: high density HDPE, low density LDPE and low linear density LLDPE. The application of different density in food packaging bags is also different, and the functions are also a little different.

（1）高密度HDPE，也常叫做低壓聚乙烯，耐油的功能體現良好，在油炸、肉制食物的包裝袋中，可選用高密度HDPE作為熱封層。

(1) High density HDPE, also known as low-pressure polyethylene, has a good oil resistance function. In the packaging bags of fried and meat foods, high-density HDPE can be used as the heat sealing layer.

（2）密度低LDPE，也常叫做高壓聚乙烯，是PE材料中質地較軟的一種材料?？瑟氉宰鳛榘b袋，可以運用到肉、新鮮水果等冷藏冷凍食物的運輸包裝袋上，或者是食材的購物袋、保鮮袋等。

(2) Low density LDPE, also known as high-pressure polyethylene, is a soft material among PE materials. It can be used as a packaging bag alone, and can be applied to the transportation packaging bag of refrigerated and frozen food such as meat and fresh fruit, or the shopping bag and fresh-keeping bag of food materials.

（3）線性密度低LLDPE，外觀與LDPE類似，耐沖擊、耐低溫耐性、耐疲勞、耐應開裂等，在冷凍食物包裝袋：速凍水餃、冰淇淋、凍肉丸等包裝袋。

(3) LLDPE with low linear density, similar to LDPE in appearance, impact resistance, low temperature resistance, fatigue resistance, stress cracking resistance, etc. in frozen food packaging bags: quick-frozen dumplings, ice cream, frozen meat balls and other packaging bags.

四、區別PE袋高密度與密度低的辦法：

4、 Ways to distinguish between high density and low density PE bags:

（1）通過觸感可以對比，兩者柔軟度不一樣，密度低的質地更為柔軟些。

(1) It can be compared by touch. The softness of the two is different, and the texture with low density is softer.

（2）用指甲在PE袋上劃，不會留下劃痕的便是高密度，會留下劃痕的便是密度低的。。

(2) If you scratch on the PE bag with your fingernails, high density will not leave scratches, and low density will leave scratches..

以上精彩內容由濟南塑料袋提供，請多咨詢請關注http://www.ksdgwy.com

The above wonderful contents are provided by Jinan plastic bag. Please consult and pay attention http://www.ksdgwy.com