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ແຜ່ນ PVC ຖືກຜະລິດແນວໃດ?
ວິທີການຜະລິດແຜ່ນພາດສະຕິກ?ປະກອບມີຂັ້ນຕອນດັ່ງຕໍ່ໄປນີ້: calendering melted plastic material by calenders into melting plastic film sheet with predetermined thickness, fast chilling and setting the melting plastic sheet with chilling water, remove water from the cooled film plastic, heati...ອ່ານຕື່ມ
