濟(jì)南塑料袋訂做：如何辨別一個塑料袋好壞

來源：http://ttw234.com/ 日期：2024-11-14

　　外觀檢查 ：

　　Appearance inspection:

　　是否有“食品用”標(biāo)志，這個標(biāo)志通常在包裝袋正面，比較醒目的位置。

　　Is there a "food use" logo, which is usually prominently displayed on the front of the packaging bag.

　　顏色：一般而言，有顏色的塑料袋大都使用了廢舊塑料的回收料，是不能用來裝食品的。比如，一些菜市場用來裝魚、蝦等水產(chǎn)品或肉類的黑色塑料袋，原本是用來裝垃圾的，消費者應(yīng)避免使用。

　　Color: Generally speaking, colored plastic bags mostly use recycled waste plastics and cannot be used to store food. For example, some markets use black plastic bags to store fish, shrimp, and other aquatic products or meat, which were originally intended to hold garbage, and consumers should avoid using them.

　　是否有雜質(zhì)，如黑點或口子。有雜質(zhì)的塑料袋肯定是使用了廢塑料做原料。

　　Are there any impurities, such as black spots or cuts. Plastic bags with impurities must have used waste plastic as raw material.

　　氣味檢測 ：

　　Odor detection:

　　聞一聞塑料袋有無異味，合格的塑料袋應(yīng)該是無異味的，而不合格的塑料袋由于使用了添加劑，會帶有各種味道。

　　Smell the plastic bag for any odor. A qualified plastic bag should have no odor, while an unqualified plastic bag may have various odors due to the use of additives.

　　強度測試 ：

　　Strength test:

　　合格的塑料袋具有一定強度，不會一撕就破；而不合格的塑料袋由于添加了雜質(zhì)，往往強度很差，容易破裂。

　　Qualified plastic bags have a certain strength and will not break easily when torn; However, unqualified plastic bags often have poor strength and are prone to breakage due to the addition of impurities.

　　抖動塑料袋時，發(fā)出清脆聲響的是的，而聲音悶澀的可能有毒。

　　When shaking plastic bags, those that make a crisp sound are non-toxic, while those that make a muffled sound may be toxic.

　　火燒測試 ：

　　Fire test:

　　將塑料袋剪下一角，放在火上一燒，的燒之即燃，火焰呈黃色，熔化像蠟燭一樣滴落，發(fā)出石蠟氣味；有毒的不易燃燒，火焰呈綠色，并有一股嗆鼻的異味。

　　Cut off a corner of the plastic bag and burn it over a fire. The non-toxic material burns instantly, and the flame turns yellow, melting and dripping like a candle, emitting a wax like odor; Toxic and non flammable, with a green flame and a pungent odor.

　　手感檢測 ：

　　Touch detection:

　　的塑料袋表面光滑，摸起來有蠟狀感；有毒的塑料袋表面發(fā)粘、發(fā)澀。

　　Non toxic plastic bags have a smooth surface and a waxy feel when touched; Toxic plastic bags have sticky and rough surfaces.

　　沉浮試驗 ：

　　Floating test:

　　把塑料袋放在水里，并用手將其按到水底，稍等片刻，浮出水面的即為塑料袋，沉在水底的即為有毒塑料袋。

　　Put the plastic bag in the water and press it to the bottom with your hand. Wait for a moment, the one that floats to the surface is the non-toxic plastic bag, and the one that sinks to the bottom is the toxic plastic bag.

　　材質(zhì)選擇 ：

　　Material selection:

　　選擇透明度高的聚乙烯或聚丙烯材料制成的塑料袋，這些材料質(zhì)量更好，更耐用。

　　Choose plastic bags made of high transparency polyethylene or polypropylene materials, which are of better quality and more durable.

　　其他注意事項 ：

　　Other precautions:

　　塑料袋少裝熱、油食物，因為高溫和油脂會使塑料袋中的有害物質(zhì)析出，導(dǎo)致中毒。

　　Plastic bags should be used to store less hot and oily food, as high temperatures and grease can cause harmful substances in the plastic bags to precipitate, leading to poisoning.

　　平時要盡量做到不使用塑料袋盛放食品，可以使用籃子或布袋代替。

　　Try not to use plastic bags to store food in daily life, and use baskets or cloth bags instead.

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