Polypropylene (PP) sheet is one of the most widely used materials for thermoformed food packaging, including microwaveable trays, takeaway containers, and ready-meal packaging.
Compared with other thermoforming plastics such as PET and PS, PP sheet offers superior heat resistance, chemical stability, and flexibility, making it ideal for packaging that must withstand reheating or hot filling.
This guide explains:
PP sheet is a thermoplastic sheet made from polypropylene resin, commonly produced through extrusion and supplied in roll form for thermoforming machines.
In thermoforming production lines, PP sheets are heated and molded into packaging such as:
PP sheet is widely used in food packaging applications where heat resistance is required.
Recommended Reading
| ملكية | القيمة النموذجية |
|---|---|
| كثافة | 0.90 g/cm³ |
| مقاومة الحرارة | up to 120–130°C |
| Vicat Softening Temperature | 140–150°C |
| قوة الشد | 30–35 MPa |
| سلامة الأغذية | FDA / EU compliant |
Key advantages:
✔ excellent heat resistance
✔ microwave safe
✔ lightweight material
✔ good chemical resistance
✔ recyclable plastic
Recommended Reading
Thickness depends on the packaging structure and strength requirements.
| طلب | Typical Thickness |
|---|---|
| Yogurt cups | 0.30 – 0.50 mm |
| صواني الطعام | 0.50 – 1.00 mm |
| Microwave containers | 0.70 – 1.20 mm |
| Heavy-duty food trays | 1.00 – 1.50 mm |
Thin gauges are suitable for خطوط التشكيل الحراري عالية السرعة, while thicker sheets provide stronger structural rigidity.
PP sheet has a higher forming temperature compared with PET.
| مادة | تشكيل درجة الحرارة |
|---|---|
| ورقة الحيوانات الأليفة | 120 – 160°C |
| ورقة PP | 160 – 200°C |
Because PP requires higher heating temperatures, thermoforming machines must allow sufficient heating time.
However, once formed, PP trays provide better heat resistance during food reheating.
Recommended Reading
How Thickness Tolerance Affects Thermoforming Stability
PP sheet is widely used for:
These applications require heat resistance and food safety compliance.
One of the biggest advantages of PP is microwave compatibility.
PP trays can typically withstand temperatures up to 120°C, making them ideal for:
PP sheet is also used for:
because of its excellent barrier properties and rigidity.
Recommended Reading
| ميزة | ورقة PP | ورقة الحيوانات الأليفة |
|---|---|---|
| مقاومة الحرارة | ممتاز | معتدل |
| الشفافية | أدنى | Very high |
| آمن للاستخدام في الميكروويف | نعم | محدود |
| Rigidity | واسطة | عالي |
| Typical Use | صواني الطعام | Clear packaging |
Recommended Reading
Common PP sheet types include:
Higher stiffness and rigidity.
Used for:
Higher impact resistance and flexibility.
Used for:
Recommended Reading
When sourcing PP sheet rolls for thermoforming, buyers typically evaluate:
Reliable manufacturers provide stable sheet thickness and good thermoforming performance, which are essential for automated production lines.
Yes. Polypropylene can typically withstand temperatures of up to 120°C, making it suitable for microwave food containers.
PP sheets are usually translucent rather than fully transparent.
For high clarity packaging, PET sheet is usually preferred.
Most thermoformed food trays use 0.6–1.0 mm PP sheet thickness.
معلومات الاتصال
رقم 32 طريق لوبين، منطقة لاكي الصناعية، شنغهاي، شنغهاي، الصين هاتف:+8613818585204 بريد إلكتروني:[email protected]تابعنا
قم بالمسح الضوئي للتواصل مع مبيعاتنا
انقر للدردشة على الواتساب
منتجات