Các công đoạn sản xuất giấy in A4

Thảo luận trong 'Đồ dùng - Thiết bị văn phòng' bắt đầu bởi NMTT90, 9/10/18.

  1. NMTT90

    NMTT90 Administrator Thành viên BQT

    Tham gia ngày:
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    Giới tính:
    Nam
    Nghề nghiệp:
    Nhân viên kinh doanh (TPHCM)
    Nơi ở:
    Tp. Hồ Chí Minh
    A4 là 1 trong những kích cỡ của những mẫu giấy in thuộc dòng Ford (ngoài ra giấy in còn bao gồm giấy Ivory, Couche, Duplex, Decal...). Giấy A4 có kích thước 210mm x 297mm, to hơn loại này tuần tự là A3, A2, A1 và A0, rất phổ biến trong đời sống, nhất là dùng cho công việc dạy học.

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    Nguyên liệu làm giấy in A4 cũng như những dòng giấy in khác là từ bột gỗ. Trong đấy người ta chú trọng và khuyến khích việc dùng các mặt hàng đã sử dụng qua để tái chế nhằm bảo vệ môi trường, tiết kiệm nguyên liệu.

    Xem thêm: Các loại giấy in a4 https://www.anlocviet.vn/cac-loai-giay-in-a4-thong-dung

    Tạo ra giấy A4 nói riêng và giấy in nói chung, về cơ bản là có ba giai đoạn chính gồm nghiền bột giấy, máy giấy và thành phẩm. Cụ thể như sau:

    - Nghiền bột giấy: từ vật liệu thô là gỗ hoặc giấy tái chế, người ta đem nghiền nát để nhận được lượng chất xơ cần sử dụng. Sau ấy lượng chất xơ ấy được rửa sạch, lược bỏ xơ sợi, ép nước ra và giữ lại phần còn lại, đem sấy thành bột giấy.

    - Máy giấy: Đưa bột máy vào máy giấy, pha loãng với nước theo tỉ lệ 1:100, sau đấy đánh đều hỗn tạp ấy trong máy giấy. Cho chất hỗn tạp thêm nước, phun qua một khe mỏng để đến dây chuyền tự động và tại đây nước được hút ra, bột giấy thành dạng lớp mỏng.

    Lớp giấy mỏng đấy được di chuyển qua 1 con lăn để ép hết nước, chuyển qua sấy khô ở 100 độ C. Khi này lượng nước còn lại khoảng 5%.

    Cần báo giá giấy a4 xem: https://www.anlocviet.vn/giay-in-a4-gia-re

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    - Thành phẩm: Đem giấy thô đi tráng phú hoặc cán mỏng. Tiếp tới, chuyển chất hỗn tạp qua bồn cất, làm trắng bằng chất tẩy màu để giấy ko có màu xám xịt. Cuối cùng là kiểm tra chất lượng, cắt giấy thành khổ A4 theo tiêu chuẩn, đóng gói thành phẩm.

    Nếu bạn muốn mua văn phòng phẩm tại Hà Nội xem thêm: https://www.anlocviet.vn/van-phong-pham-tai-ha-noi-an-loc-viet
     
  2. Keralapn

    Keralapn New Member

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  3. Keralapn

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