欧美在线日韩a精品久-女人扒开大腿让男人操-肉色超薄丝袜脚一区二区-日韩毛片免费日韩免费毛片

濟(jì)南精美塑料包裝廠為您提供塑料袋、方便袋、塑料袋、食品塑料袋,相關(guān)信息發(fā)布和資訊展示,敬請(qǐng)關(guān)注!

濟(jì)南歷下精美塑料包裝廠

服務(wù)熱線: 18764138233

熱門:
公司簡(jiǎn)介
當(dāng)前位置:首頁(yè)-公司簡(jiǎn)介

濟(jì)南食品塑料包裝袋的準(zhǔn)確辨別方法

食品塑料包裝袋是人們生活中經(jīng)常要用到的,但是使用的時(shí)候也一定要小心,有些塑料包裝袋是有毒的,不可以用來(lái)直接裝食物的。

Food plastic packaging bags are commonly used in people's daily lives, but caution must also be exercised when using them. Some plastic packaging bags are toxic and cannot be used directly to store food.

一、用眼睛觀察法

1、 Observation method with eyes

塑料袋呈白色,透明或微透明,質(zhì)地均勻;有毒塑料袋則為彩色或雖為白色,但透明度差,較渾濁,塑料表面拉伸不均勻,有小顆粒。

Non toxic plastic bags are white, transparent or slightly transparent, with a uniform texture; Toxic plastic bags are colored or white, but have poor transparency, are cloudy, have uneven surface stretching, and contain small particles.

20230426020449838.jpg

二、用耳朵聽(tīng)

2、 Listen with your ears

用手使勁抖動(dòng)塑料袋時(shí),發(fā)出清脆聲表明是塑料袋;而聲音小而悶的便是有毒塑料袋。

When shaking the plastic bag vigorously with your hands, a crisp sound indicates that it is a non-toxic plastic bag; And the one with a low and muffled sound is the toxic plastic bag.

三、用手摸

3、 Touch with your hands

用手撫摸塑料包裝袋表面,很光滑是的;發(fā)粘、發(fā)澀、有蠟狀感的是有毒的。

Touching the surface of the plastic packaging bag with your hand is very smooth and non-toxic; Sticky, astringent, and waxy hair are toxic.

四、用鼻子聞

4、 Smell with your nose

的塑料包裝袋是無(wú)味的;有刺激氣味或味道不正常的是有毒的。

Non toxic plastic packaging bags are odorless; Anything with a stimulating odor or abnormal taste is toxic.

五、沉水試驗(yàn)法

5、 Submerged test method

把塑料袋放到水里,用手將其按到水底,稍等片刻,浮出水面的即為塑料包裝袋,沉在水底的即是有毒塑料包裝袋。

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

六、燃燒法

6、 Combustion method

的塑料袋易燃,火焰尖 端呈黃色,局部呈青色,燃燒時(shí)像蠟燭淚一樣滴落,有石蠟味;有毒的塑料袋不易燃燒,離火即熄,火焰尖 端呈黃色、或是黑色,底部呈綠色,軟化能拉絲、還可以聞到一股刺鼻的味。

Non toxic plastic bags are flammable, with a yellow flame tip and some areas appearing blue. When burned, they drip like candle tears and have a paraffin odor; Toxic plastic bags are not easy to burn and will extinguish immediately upon ignition. The flame tip is yellow or black, and the bottom is green. They soften and can be brushed, and a pungent odor can be smelled.

久热香蕉精品视频在线播放| 国产国产精品精品在线| 欧美午夜伦理在线观看| 91免费一区二区三区| 熟女免费视频一区二区| av在线免费观看一区二区三区| 国产对白老熟女正在播放| 亚洲一区二区精品免费视频| 高清在线精品一区二区| 美女被后入视频在线观看| 日本妇女高清一区二区三区| 亚洲精选91福利在线观看| 麻豆一区二区三区精品视频| 日本一本不卡免费视频| 日本精品中文字幕人妻| 日韩免费国产91在线| 欧美日韩亚洲国产av| 1024你懂的在线视频| 色婷婷激情五月天丁香| 日本不卡视频在线观看| 五月婷婷六月丁香亚洲| 免费高清欧美一区二区视频| 在线中文字幕亚洲欧美一区 | 欧美整片精品日韩综合| 亚洲中文字幕在线视频频道| 好吊日在线视频免费观看| 国产又粗又猛又长又大| 久久热麻豆国产精品视频| 久热香蕉精品视频在线播放| 日韩美成人免费在线视频| 国产精品二区三区免费播放心 | 激情视频在线视频在线视频| 午夜精品久久久99热连载| 亚洲精品蜜桃在线观看| 亚洲国产丝袜一区二区三区四| 欧美尤物在线视频91| 高清在线精品一区二区| 日韩人妻一区二区欧美| 日韩精品亚洲精品国产精品| 欧美日韩免费黄片观看| 亚洲av秘片一区二区三区|