Kenapa kod tarikh tercalar pada tin aluminium sejuk dan cara membetulkannya


Masa siaran:

2026-10-12

Tin sejuk dan basah menyebabkan kod CIJ tercalar dan mengelupas. Punca sebenar, dari pemeluapan ke pilihan dakwat, dan tetapan menjaga tariah terbaca.

Kenapa kod tarikh tercalar pada tin aluminium sejuk dan cara membetulkannya

Tin keluar dari pengisi dalam keadaan sejuk dan basah. Kebanyakan lini minuman menyejukkan produk sebelum mengisi, dan permukaan tin berada di bawah takat embun dewan. Dakwat mendarat atas lapisan air, bukan atas logam. Separuh aduan kod tercalar yang saya siasat selesai dengan mengalihkan pengekod empat meter ke hilir dan membiarkan tin panas dan kering dahulu. Percuma. Tanpa tukar barang guna, tanpa panggil servis.

Permukaan memantul, dakwat tidak berkompromi

Aluminium telanjang ialah permukaan pembasahan yang buruk: licin, teroksida beberapa saat selepas dibentuk, dan sering membawa filem pelincir nipis daripada lini itu sendiri. Dakwat CIJ yang baik pada karton tersepit di sini kerana penyempitan sebenar ialah lekatan, bukan pengeringan. Jika operator membalas dengan menurunkan kepala dan memperlahankan lini, penolakan naik atas sebab lain: kontras lemah pada dinding melengkung berkilau.

Pilihan dakwat mengalahkan pelarasan tekanan

Untuk tin, jawapan hampir selalu pada dakwat, bukan mesin. Gred kering pantas tak berliang — keluarga sama seperti penutup logam dan laminat foil — menggigit lapisan oksida dan bertahan terhadap pemeluapan yang menghapuskan dakwat biasa. Julat dakwat CIJ serasi VJ kami untuk logam tak berliang wujud khusus untuk aplikasi ini. Menukar gred murah; menala semula seluruh lini sekeliling dakwat salah menelan satu musim.

Tetapkan lini mengelilingi kod

Tiga tetapan membawa kebanyakan hasil. Jarak cetak di hujung pendek julat kepala, kerana dinding melengkung menghukum jarak dua kali ganda. Kelajuan lini dipadankan supaya setiap tin menerima laluan penuh — kod yang melintasi jahitan dibaca pengimbas sebagai dua bahagian. Dan sasaran pemanasan: permukaan tin perlu melepasi takat embun sebelum kepala, dan itu soalan penghantar lebih daripada pencetakan.

Pembetulan yang benar-benar bertahan

Alihkan titik cetak selepas zon pemanasan jika boleh. Pembetulan termurah dalam senarai.

Tukar kepada gred kering pantas tak berliang sebelum menyentuh tetapan mesin. Satu parameter menyingkir lima.

Bersihkan kepala setiap tukar syif di dewan lembap. Pemeluapan tidak mengampuni plat muncung juga.

Uji dengan tin terus dari lini, bukan sampel bangku. Makmal suhu bilik akan kata dakwat berfungsi. Ia tidak akan kata dewan itu masalahnya.

Penutup

Kod gagal pada tin sebab fizikal membosankan, dan kekal terbetul atas sebab fizikal yang sama membosankan: permukaan kering, dakwat sepadan, jarak rapat. Kilang yang memandangnya sebagai soalan dakwat dan susun atur berhenti mengejar kerosakan. Kilang yang terus memutarkan pencetak mengejarnya setiap musim panas.

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