事實(shí)上，外賣(mài)打包袋也是包裝各種商品的必要物品之一。它可以把產(chǎn)品包裝提高到一個(gè)更高的水平。在通常的包裝中也很常見(jiàn)。外賣(mài)打包袋保持食物新鮮的原理是什么呢？

In fact, takeout bags are also one of the necessary items for packaging various commodities. It can improve the product packaging to a higher level. It is also common in common packaging. What is the principle of keeping food fresh in takeout bags?

外賣(mài)打包袋具有生物透氣功能，可調(diào)節(jié)袋內(nèi)氮、二氧化碳、氧氣的比例，平衡袋內(nèi)氣體，防止氣體腐蝕，可抑果蔬收獲后的呼吸作用，減少蒸騰作用，保持水分和營(yíng)養(yǎng)，并具有多種養(yǎng)殖緩蝕效果，預(yù)防果蔬。而且它還具有防霧的功能，可以防止水蒸汽在袋內(nèi)冷凝，避免果蔬與袋壁接觸，從而防止腐爛的發(fā)生。

The takeout bag has the biological ventilation function, which can adjust the proportion of nitrogen, carbon dioxide and oxygen in the bag, balance the gas in the bag, prevent gas corrosion, inhibit the respiration of fruits and vegetables after harvest, reduce transpiration, maintain water and nutrition, and has a variety of aquaculture corrosion inhibition effects to prevent fruits and vegetables. It also has the function of anti-fog, which can prevent the condensation of water vapor in the bag, avoid the contact of fruits and vegetables with the bag wall, and prevent the occurrence of decay.

外賣(mài)打包袋須能夠經(jīng)受低溫和高溫，以便適合冷凍或烹飪食物。它還應(yīng)具有較強(qiáng)的韌性和抗損壞能力，以免暴露食品，造成食品變質(zhì)。它還具有很強(qiáng)的阻擋能力，灰塵、水分和空氣的進(jìn)入，并應(yīng)具有很強(qiáng)的遮陽(yáng)能力，以避免外界因素引起的食物變質(zhì)。這樣一來(lái)，我們就應(yīng)該注意選擇塑料袋，以免影響正常使用。

The takeout bag must be able to withstand low and high temperatures in order to be suitable for freezing or cooking food. It should also have strong toughness and damage resistance to avoid exposing food and causing food deterioration. It also has a strong blocking ability to prevent the entry of dust, water and air, and should have a strong shading ability to avoid food deterioration caused by external factors. In this way, we should pay attention to the selection of plastic bags to avoid affecting the normal use.

打包袋防止老化的正常措施

Normal measures to prevent aging of packaging bags

1、打包袋在自然環(huán)境下即在陽(yáng)光直射的條件下，一周后其強(qiáng)度下降約25%，兩周后會(huì)下降約40%，基本上已不能運(yùn)用。也就是說(shuō)外賣(mài)打包袋的貯存保管問(wèn)題非常重要。

1. In the natural environment, that is, under direct sunlight, the intensity of the bag will decrease by about 25% after one week, and by about 40% after two weeks, which is basically unusable. That is to say, the storage and safekeeping of takeaway bags is very important.

2、打包袋在包裝了物品之后放在露天環(huán)境受陽(yáng)光直射，強(qiáng)度會(huì)急劇下降，所以要盡量避免陽(yáng)光的直射。

2. After packaging, the packaging bag will be exposed to direct sunlight in the open air, and its intensity will drop sharply, so try to avoid direct sunlight.

3、再生料的過(guò)多參加也是促進(jìn)外賣(mài)打包袋老化的原因之一。

3. Excessive participation of recycled materials is also one of the reasons that promote the aging of takeaway bags.

4、打包袋貯運(yùn)過(guò)程中溫度過(guò)高或遇到雨淋,都會(huì)導(dǎo)致其強(qiáng)度下降，然后達(dá)不到維護(hù)內(nèi)裝物品的質(zhì)量要求，所以在平時(shí)應(yīng)該避免高溫和雨水的沖刷。

4. In the process of storage and transportation, the temperature of the packaging bag is too high or it is exposed to rain, which will cause its strength to drop, and then it can not meet the quality requirements for maintaining the contents. Therefore, it is necessary to avoid the scouring of high temperature and rain at ordinary times.

如今社會(huì)當(dāng)中，很多陳列在柜臺(tái)上面的打包袋大部分都是帶有鋸齒，其目的就是便于消費(fèi)者扯開(kāi)袋子，更方便的打開(kāi)打包袋，但是你有沒(méi)有想過(guò)，為什么會(huì)弄成鋸齒狀的效果，而不是平口的效果，打包袋為什么要制作成鋸齒口。

In today's society, most of the packaging bags displayed on the counter are equipped with serrations. The purpose is to make it easier for consumers to tear open the bag and open the packaging bag. But have you ever thought about why the packaging bag is made into serrated effect rather than flat effect, and why the packaging bag is made into serrated mouth.

這個(gè)問(wèn)題涉及到力學(xué)的使用，當(dāng)物體受力的時(shí)候，受力會(huì)根據(jù)物體本身外形而改動(dòng)，一般會(huì)在褶皺或者尖角處發(fā)作突變。因此打包袋廠(chǎng)把袋子邊緣制作成鋸齒狀，保留這個(gè)鋸齒狀的效果，可以讓消費(fèi)者很輕松、方便的打開(kāi)打包袋。更多相關(guān)內(nèi)容就來(lái)我們網(wǎng)站http://www.qchfb.cn咨詢(xún)吧！

This problem involves the use of mechanics. When an object is stressed, the stress will change according to the shape of the object itself, and it will break out at the fold or sharp corner. Therefore, the packaging bag factory makes the edge of the bag into a zigzag shape and retains the zigzag effect, which can make it easy and convenient for consumers to open the packaging bag. Come to our website for more relevant content http://www.qchfb.cn Ask!