Common Types of plastic roll films
1. Stretch Film
Stretch film is highly elastic and wraps tightly around items without adhesives. It’s mainly used for securing pallet loads, bundling products, and protecting goods from dust and moisture. The film “stretches” to hug the load firmly.
2. Shrink Film
Shrink film tightens when heated, conforming perfectly to the shape of the product. You often see it covering bottles, CDs, or gift baskets. It provides a tamper‑evident, dust‑proof seal.
3. Cling Film (Food Wrap)
This is the thin, sticky film used in kitchens to cover bowls or wrap sandwiches. It clings to itself and to smooth surfaces, keeping food fresh by blocking air and moisture.
4. Barrier Film
Barrier films are multi‑layer structures designed to block oxygen, влага, or light. They are essential for vacuum packaging coffee, мясо, сыр, and other sensitive foods to extend shelf life.
5. Industrial Lidding Film
Used to seal trays (like ready meals or yogurt cups), lidding film bonds to plastic or foil trays. It often includes an easy‑peel feature.
Key Materials Used
| Материал | Key Properties | Общие приложения |
|---|---|---|
| LDPE (Low‑Density Polyethylene) | Soft, гибкий, good clarity, moisture‑resistant | Cling film, bread bags, промышленные вкладыши |
| ЛПЭНП (Linear Low‑Density Polyethylene) | Высокая прочность на разрыв и устойчивость к проколу | Stretch wrap (pallet wrap) |
| ПВХ (Поливинилхлорид) | Excellent clarity, moderate cling, low cost | Some food wrap, shrink film for non‑food items |
| ДОМАШНИЙ ПИТОМЕЦ (Полиэтилентерефталат) | Сильный, прозрачный, excellent gas barrier | Shrink sleeves, high‑clarity blister packs |
| Evoh (Сополимер этилена и винилового спирта) | Very high oxygen barrier (usually a thin layer between other plastics) | Vacuum bags, barrier films for meat & сыр |
| Пенсильвания (Полиамид / Нейлон) | Жесткий, puncture‑resistant, good heat tolerance | Vacuum pouches, shrink bags for large cuts of meat |
Примечание: Many high‑performance films are co‑extruded — they combine several materials (НАПРИМЕР., ДОМАШНИЙ ПИТОМЕЦ + Evoh + Финиш) to get the best of each: strength, барьер, and sealability.
Choosing the plastic roll films
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For packaging and shipping: Использовать stretch film (ЛПЭНП) for pallet wrapping, или shrink film for individual product protection.
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For food freshness at home: Go with пищевая пленка (LDPE or PVC).
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For long‑term food storage (vacuum sealing): Choose a multi‑layer barrier film containing EVOH or Nylon.
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For tamper‑evident lids: Select lidding film compatible with your tray material.
Заключительные мысли
plastic roll films are a versatile packaging solution, and understanding the difference between stretch, сокращать, cling, and barrier films helps you pick the right one for your needs. Pay attention to materials like LDPE, ЛПЭНП, or EVOH — each brings specific strengths to the table. Whether you’re running a warehouse, a food business, or just wrapping leftovers, there’s a perfect roll film for the job.
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