浴室人妻的情欲hd三级,无码专区丰满人妻斩六十路,国产午夜三级一区二区三,国产精品美女WWW爽爽爽视频

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:
常見問題
當(dāng)前位置:首頁-新聞資訊-常見問題

濟(jì)南塑料袋訂做:塑料袋的成分有哪些?

來源:http://58gaofang.com/ 日期:2024-05-11

  塑料袋的主要成分為:聚乙烯(、聚氯乙烯、聚丙烯、聚苯乙烯樹脂。

The main components of plastic bags are polyethylene, polyvinyl chloride, polypropylene, and polystyrene resin.

  關(guān)于塑料袋的相關(guān)介紹:

Introduction to plastic bags:

  常用的食品塑料袋多為聚乙烯薄膜制成,該薄膜,故可用于盛裝食品。還有一種薄膜為聚氯乙烯制成,聚氯乙烯本身也性,但根據(jù)薄膜的用途所加入的添加劑往往是對(duì)人體有害的物質(zhì),具有一定的毒性。所以這類薄膜及由該薄膜做的塑料袋均不宜用來盛裝食品。如要鑒別聚氯乙烯塑料袋和聚乙烯塑料袋,可用下面簡易法進(jìn)行辨認(rèn)。

The commonly used food plastic bags are mostly made of polyethylene film, which is non-toxic and can be used to hold food. There is also a type of film made of polyvinyl chloride, which itself is non-toxic, but the additives added according to the purpose of the film are often harmful substances to the human body and have a certain degree of toxicity. So this type of film and plastic bags made from it are not suitable for containing food. To distinguish between polyvinyl chloride plastic bags and polyethylene plastic bags, the following simple method can be used for identification.

  聚乙烯薄膜(性)

Polyethylene film (non-toxic)

20230206051029528.jpg

  薄膜呈乳白色,半透明狀(幾層疊起來觀察尤其明顯),摸起來較潤滑,好像表面上涂有蠟層,用力抖動(dòng),聲音發(fā)脆,遇火易燃,火焰黃色,燃燒時(shí)有粘液滴落,并有蠟燭燃燒時(shí)的氣味。

The film is milky white and semi transparent (especially noticeable when stacked several times). It feels relatively smooth to the touch, as if there is a wax layer on the surface. When shaken vigorously, the sound becomes brittle, and it is flammable when exposed to fire. The flame is yellow, and there are droplets of mucus during combustion, as well as the smell of candles burning.

  聚氯乙烯薄膜(一般有毒性)

Polyvinyl chloride film (generally toxic)

  如不加色素,為透明狀,摸起來其表面有些發(fā)粘,用力抖動(dòng),聲音低沉,遇火不易燃燒,離火焰即熄,火焰呈綠色。

If not colored, it is transparent and feels a bit sticky to the touch. Shake vigorously and the sound is low. It is not easy to burn when exposed to fire and extinguishes immediately after leaving the flame. The flame appears green.

以上就是有關(guān):濟(jì)南塑料袋訂做 的介紹,想了解更多的內(nèi)容請(qǐng)點(diǎn)擊:http://58gaofang.com 我們將會(huì)全心全意為您提供滿分服務(wù),歡迎您的來電!

The above is an introduction to customizing plastic bags in Jinan. For more information, please click: http://58gaofang.com We will wholeheartedly provide you with full score service. Welcome to call us!

日韩人妻精品一区二区三区视频| 无码人妻丰满熟妇区bbbbxxxx | 欧美疯狂做受xxxx高潮小说 | 激情亚洲一区国产精品| 精品久久久久久无码人妻热| 51久久成人国产精品麻豆| 男女国产猛烈无遮挡色情| 人妻少妇精品专区性色av| 日韩精品一区二区av在线观看| 久久99久久99精品免观看吃奶| 日韩精品人妻系列无码专区免费| 亚洲一区二区嗯好爽快点| 两个人做人爱视频免费| 亚洲国产精品无码久久一线| 精品国产青草久久久久福利 | 午夜精品一区二区三区在线视| 国产精品99久久av色婷婷综合| 国偷自产一区二区免费视频 | 久久婷婷五月综合色奶水99啪| 久久久无码人妻精品无码| 久久免费看少妇高潮a片特无毒| 五月槐花香电视剧全集免费| 免费看男男gay啪啪网站| 777午夜精品久久AV蜜桃| 红杏永久免费视频入口| 久久久久亚洲AV无码A片| 97精品久久久久中文字幕| 久久久国产精华液| 国产传媒18精品免费观看| 少妇一夜三次一区二区| 三a级做爰片免费观看| 伊人久久综合精品无码AV专区 | 久久人人爽人人爽人人AV东京热| 亚洲欧美婷婷五月色综合| 国产愉拍av免费视频一区| 精品国品一二三产品区别在线观看| 国产精品18久久久久久欧美网址| 国产精品久久久久成人免费| aaa级精品无码久久久国产片| 欧美激情xxxx性bbbb| 小粉嫩精品a片在线视看|