Thử nghiệm bằng màng PE (máy quấn cuộn)

Tóm tắt

Before a coil wrapper ships, and before a plant changes film supplier, the film is tested on a real coil. The trial shows whether the film runs through the ring without breaking, covers the edges at the set overlap and holds the coil tight. This is how we run a PE film trial on our ring coil wrapper and what we check.

A dark coil sits on the support rollers inside a green frame. The steel wrapping ring, carried on guide wheels round its rim, spins through the coil eye and lays PE film over the coil face and edges as the coil turns.

Mục lục

Why test the film

PE film from two suppliers with the same thickness can behave very differently in a ring wrapper. The film is pulled round a small radius at the coil eye on every turn, and a film that is too stiff wrinkles there while a film that is too weak tears. A trial on your own coil size answers this before you buy a container of film.

Thiết lập dùng thử

  1. Use a real production coil, not a dummy.
  2. Fit the film roll and set the carriage tension.
  3. Set the ring speed and coil speed for the target overlap.
  4. Wrap one coil at the set values.
  5. Wrap a second coil at a higher ring speed.
  6. Keep both coils for the checks below.

Đo cái gì

kiểm tra Qua Fail
Film breaks per coil không ai một hoặc nhiều
Mắt bên flat, no deep folds bunched film, gaps
Outer edge overlap tại mục tiêu below target
Căng thẳng coil tight, no loose layers film slack after one hour
Tail holds when pressed cất cánh

Leave the wrapped coil for at least one hour before the tension check, because PE film relaxes after wrapping.

Overlap and film use

Advance per wrap ≈ film width × (1 − overlap)

Độ dày màng phim trên mỗi cuộn ≈ (π × OD ÷ độ dịch chuyển) × 2 × (chiều rộng cuộn + (OD − ID) ÷ 2)

Example only: a coil of OD 500 mm, ID 250 mm and width 200 mm with 100 mm film at 50% overlap advances 50 mm per wrap. π × 500 ≈ 1,571 mm, so 1,571 ÷ 50 ≈ 31 wraps. Each wrap is 2 × (200 + 125) = 650 mm, so the coil uses about 31 × 0.65 = 20 m of film. Weigh the film roll before and after the trial to check this figure.

Dữ liệu máy

Mục FPCA-300
Coil ID 250 tầm 510 mm
Coil OD 400 tầm 900 mm
chiều rộng cuộn dây 60 tầm 300 mm
trọng lượng thép cuộn 20–200 kg
tốc độ vòng 10–90 vòng / phút
chồng chéo 10 tầm 90%
Phim ảnh LLDPE, PVC, PE or paper

Danh sách kiểm tra lựa chọn

  1. Đường kính trong, đường kính ngoài, chiều rộng và trọng lượng của cuộn dây.
  2. Loại phim, chiều rộng và độ dày.
  3. Target overlap.
  4. Số cuộn dây mỗi giờ.
  5. Sample coils for a trial.
  6. Indoor or outdoor storage after wrapping.

Sự An Toàn

We design to EN ISO 12100:2010 for risk assessment, EN 415-10 for packaging machine safety and EN 60204-1 for the electrical equipment. During trials the ring guard stays closed and the film is threaded only with the machine stopped.

Câu hỏi thường gặp về kỹ thuật

Q: Why does film wrinkle at the eye? A: The eye is a small radius; stiff or wide film folds there.

Q: Does higher ring speed save time? A: Yes, but it raises film tension and break risk, so test it.

Q: Can you test our film before shipping the machine? A: Yes. Send film rolls and sample coils for a trial.

Q: PE or PVC? A: PE is the common choice; PVC gives a stiffer, clearer wrap.

Bước tiếp theo

  1. Send your coil sizes and film details Gửi đến info@fhopepack.com.
  2. Chúng ta chạy a film trial on your coil size.
  3. Chúng tôi trả lời trong vòng 24 giờ with the trial plan and quotation.

nguồn

  • FHOPE product page: FPCA-300 cable coil wrapping machine
  • EN ISO 12100:2010; EN 415-10; EN 60204-1

Lần cuối cập nhật: 20/10/2026

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