常見檢測自封袋密封性方法

來源：http://www.lyukatsu.com/ 日期：2024-03-25

自封袋雖然非常方便，但是密封性能也很重要。在設計自封袋時，需要充分考慮每層材料的性能和厚度，以獲得足夠的阻隔性能。檢測自封袋密封性能的常用方法有三種

Although self sealing bags are very convenient, sealing performance is also important. When designing self sealing bags, it is necessary to fully consider the performance and thickness of each layer of material to achieve sufficient barrier performance. There are three common methods for testing the sealing performance of self sealing bags

無水浸泡法。

Anhydrous soaking method.

自封袋通常適用于外層材料性能在水的作用下在測試過程中會明顯下降的包裝，如外層為紙質材料的包裝。

Self sealing bags are usually suitable for packaging where the performance of the outer layer material will significantly decrease during the testing process under the action of water, such as packaging with paper material as the outer layer.

用試液(如與濾紙有明顯色差的有色水溶液)填充樣品，密封后將樣品放在濾紙上，觀察試液從樣品內到外的滲漏情況。應該從兩方面來衡量。也可以放在真空室中，在負壓下測試。

Fill the sample with a test solution (such as a colored aqueous solution with a significant color difference from the filter paper), seal it, and place the sample on the filter paper to observe the leakage of the test solution from the inside out of the sample. It should be measured from two aspects. It can also be placed in a vacuum chamber and tested under negative pressure.

二、真空觀察法。

2、 Vacuum observation method.

自封袋的適用材料同上。通過抽真空，產生樣品內部和外部的壓力差，觀察膨脹和釋放真空后樣品形狀的恢復，判斷樣品的密封性能。

The applicable materials for self sealing bags are the same as above. By vacuuming, a pressure difference is generated between the inside and outside of the sample, and the shape recovery of the sample after expansion and vacuum release is observed to determine the sealing performance of the sample.

第三，城市壓在水里。

Thirdly, the city is submerged in water.

自封袋通常適用于外層材料性能在水的作用下在試驗過程中不會明顯下降的包裝，如外層采用塑料薄膜的包裝。通過對真空室抽真空，產生浸入水中的樣品內部和外部的壓力差，觀察樣品中的氣體逸出或水分滲入，測量樣品的密封性能。測量密封性能常用的手段是具有真實速率的測試裝置。

Self sealing bags are usually suitable for packaging where the performance of the outer layer material will not significantly decrease during the testing process under the action of water, such as packaging with plastic film on the outer layer. By vacuuming the vacuum chamber, the pressure difference between the inside and outside of the sample immersed in water is generated, and the gas escape or water infiltration in the sample is observed to measure the sealing performance of the sample. The commonly used method for measuring sealing performance is a testing device with a true rate.

目前市場上很多商品都存在產品質量問題，總有窮店為了更好地實現目標而鋌而走險。因此，我們在購買自密封袋時要特別注意，自密封袋因其方便易用而被廣泛應用于食品等各個領域。很多人會問如何辨別自封袋是否有害。

At present, many products in the market have quality issues, and there are always poor stores taking risks to better achieve their goals. Therefore, we should pay special attention when purchasing self sealing bags, as they are widely used in various fields such as food due to their convenience and ease of use. Many people ask how to distinguish whether self sealing bags are harmful.

用雙眼看。

Look with both eyes.

包裝袋為白色、全透明或微全透明，材質勻稱。有害密封包裝袋為彩色或白色，但透明度和濁度較弱。塑料表層拉伸不均勻，含有小顆粒。

The non-toxic packaging bag is white, fully transparent or slightly fully transparent, with a uniform material. Harmful sealed packaging bags are colored or white, but have weak transparency and turbidity. The plastic surface is unevenly stretched and contains small particles.

聽聽你的耳朵。

Listen to your ears.

當用力搖晃包裝袋時，會發(fā)出清晰的聲音，表明是包裝袋。而低噪音是有害的包裝袋。

When vigorously shaking the packaging bag, a clear sound will be emitted, indicating that it is a non-toxic packaging bag. Low noise is a harmful packaging bag.

本文由濟南塑料袋訂做提供技術支持，更多的詳細精彩內容請點擊我們的網站http://www.lyukatsu.com我們將會全心全意為您提供滿意的服務。

This article provides technical support for customized plastic bags in Jinan. For more detailed and exciting content, please click on our website http://www.lyukatsu.com We will wholeheartedly provide you with satisfactory service.