Fungsi nerapkeun lapisan napel di sisi séjén foil aluminium foil nyaéta pikeun beungkeut aluminium pikeun lambaran plastik anu kaku (PVC), Janten ubarna disegel. Nalika nerapkeun napel, palapis anu paling seragam kedah dipasihan, sareng bédana kedah dikawasa dina bentuk standar;

Metode deteksi bédana dina jumlah palapis aluminium foil nyaéta saperti kieu: ngagunakeun a 1/10,000 Kasaimbangan analitis pikeun nerapkeun 5 conto 100 mm x 100 mm tina bérés aluminium bérésan sareng beuratna nyalira. Teras nganggo acetle acetate, metil étylok atanapi pangleyur sanésna pikeun ngusap napel teras beuratna, bédana antara dua beurat mangrupikeun jumlah pelangkutan, sareng nilai rata-rata jumlah palapis tilu potongan diitung. Bédana antara beurat palapis sareng nilai rata-rata kedah langkung ti ± 12.5% Ngaliwat.

Nguji kakuatan panas sareng kualitas tina lapisan napel tina foil aluminium: Nganggo segel panas-jinis, Potongan uji standar, sareng rékaman mesin tés anu otomatis. Motong 2 ngusah 100 mm x 100 potongan mm tina produk anu réngsé, sareng motong 2 ngusah 100 mm x 100 potongan mm tés pvc racr mvc kaku.

Suhu set mesin segel panas 150-160 ℃, Tekananna 0.2x1o 6 Pa tina pa, Sareng waktos 1s. Salila operasi, supersimes lapisan napel tina sampel sareng lambaran pvc, nyelapkeun kana segel panas pikeun segel panas, and use a standard cutter to cut into 15 mm wide samples, and take the middle three strips for use by the automatic tensile testing machine.

Métode uji: Adjust the tensile testing machine and make the pointer of the recorder zero, set the tensile speed to 200mm/min, clamp the PVC in the sample in the upper gripper of the testing machine, and clamp the aluminum foil layer of the sample in the tester. In the lower gripper of the machine, start the tensile testing machine and carry out the 180-degree direction peeling.
Leave. The automatic tensile machine will automatically record its value, and the data should take the average value of the curve drawn by the automatic recorder as the heat sealing strength value of the sample. Its value should be greater than 5.8N/15mm to be qualified.