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封箱膠帶的小知識
日期:2022-10-29 10:36:27 來源:宏展包裝

        封箱膠帶

        封箱膠帶是在BOPP原膜的根基上通過髙壓電暈放電后使一面表層不光滑后涂上膠水后經(jīng)由分切分為微卷便是大家日常運用的透明膠布。透明膠布膠水是丙稀酸脂膠水,又叫聚氨酯樹脂,主要成分是酊脂。

        酊脂是一種高分子材料主題活動化學(xué)物質(zhì),溫度多少對分子結(jié)構(gòu)運動有一定危害。膠水的酊脂成分可以直接危害到膠布的運用狀況。

        一切正常的封箱膠帶的初粘力在≥13號(指的是鋼球號)中間,這類膠布膠水的壁厚一般為22μm。是符合規(guī)定的薄厚。

        封箱膠帶

        針對有顏色的膠布是因為便于做標(biāo)記和遮掩主要用途,一般淺黃色和棕黃色比較多。帶顏色的膠布有些人都覺得是膜的顏色,實際上顏色是膠水的顏色。

        將對粘捏緊隨后迅速打開,能夠?qū)⒁贿叺哪z拉擺脫,就可以見到原膜的含量和清晰度。

        1 膜(backing) 主要是opp,pvc,pet,pe等 中國主要是bopp

        2 膠黏劑 (adhesive) 關(guān)鍵原料是純天然(生成)硫化橡膠,和Acrylic

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