主要還是看看到底在使用的時候，這個保溫袋的所處環(huán)境和當前的天氣溫度。保溫袋主要材質(zhì)是珍珠棉以及鋁箔材料。保溫袋在夏季的時候保溫效果比較好，大概可以保溫5個小時到6個小時左右。一般外賣袋的厚度在2毫米左右，食品冷凍類所用的保溫袋在2.5-3毫米左右，保溫袋的整體密度也各有不同，其價格沒有明確的界限，看個人適用情況。山東聊城延程包裝廠以高質(zhì)量，低價格為各界用戶提供更好的服務！

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It is mainly to see the environment and current weather temperature of the thermal insulation bag when it is used. The main materials of the insulation bag are pearl cotton and aluminum foil. The heat preservation effect of the heat preservation bag is relatively good in summer, and it can be kept for about 5 to 6 hours. Generally, the thickness of the take out bag is about 2mm, and the insulation bag used for food freezing is about 2.5-3mm. The overall density of the insulation bag is also different. There is no clear boundary for its price. It depends on the personal application. Shandong Liaocheng Yancheng packaging factory provides better service for users from all walks of life with high quality and low price!