久久久久99精品成人片三人毛片,无码精品一区二区三区,无码人妻丰满熟妇啪啪网站牛牛,国内精品久久久久伊人av

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(xiàn): 18764138233

熱門(mén):
常見(jiàn)問(wèn)題

濟(jì)南塑料袋訂做:塑料袋的成分有哪些?

來(lái)源:http://www.sou029.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(shù)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(lèi)薄膜及由該薄膜做的塑料袋均不宜用來(lái)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(jiǎn)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(lái)觀察尤其明顯),摸起來(lái)較潤(rùn)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(lái)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://www.sou029.com 我們將會(huì)全心全意為您提供滿(mǎn)分服務(wù),歡迎您的來(lái)電!

The above is an introduction to customizing plastic bags in Jinan. For more information, please click: http://www.sou029.com We will wholeheartedly provide you with full score service. Welcome to call us!

欧美人禽性动交异族另类| 内射人妻少妇无码一本一道| 国产白丝jk捆绑束缚调教视频| 亚洲av无码一区二区三区电影| 国产偷抇久久精品a片69| 精品无码国产一区二区三区.| 奇米影视7777久久精品人人爽| 狠狠色丁香婷婷综合久久| 亚洲色欲综合一区二区三区| 亚洲精品无码久久毛片| 香蕉人妻av久久久久天天| 国产av国产av在在免费线| 久久青青草原亚洲av无码麻豆| 亚洲国产精品无码成人片久久| 国产伦精品一区二区三区免费迷| 欧美成人精品A∨在线观看| 久久无码人妻精品一区二区三区| 精品国精品国产自在久国产不卡| 一区二区亚洲av天堂嫩模| 久久人人爽人人爽人人片av不| 亚洲欧美成人一区二区在线电影| 精品久久久久中文字幕| 国产日产亚洲系列最新| 国产欧美久久久精品影院| 国产亚洲精品麻豆一区二区| 免费视频国产在线观看| 国产精品久久久久一区二区三区共| 亚洲日本va中文字幕久久| 久热爱精品视频在线| 免费无码成人AV电影在线播放| 欧美gay猛男gaya片18禁| 国产精品永久久久久久久久久| 黑人巨大无码中文字幕无码| 瑜伽裤国产一区二区三区| 人妻激情偷乱视频一区二区三区| 国产97人人超碰CAOPROM| 国产无遮挡a片又黄又爽| 日本天狼无码久久久久影院| 亚洲色欲综合一区二区三区| 未满小14洗澡无码视频网站| 日韩亚洲av无码三区二区不卡|