Welcome to our website !
Tel: +86-13386070190 Email: 892065706@qq.com
| Parameter Category | Parameter Name | Typical Value/Range | Test Standard/Remarks |
| Material Structure | Composite Structure | PET (outer layer)/PE (inner layer) | PET thickness: 12-25μm, PE thickness: 30-80μm |
| Composite Process | Dry lamination/in-line lamination | Process selection based on requirements | |
| Physical Properties | Tensile Strength (Longitudinal/Transverse) | PET: 100-200 MPa PE: 20-40 MPa |
ASTM D882 |
| Elongation at Break | PET: 50-150% PE: 300-600% |
ASTM D882 | |
| Tear Strength (Initial) | PET: 50-100 N/mm PE: 10-30 N/mm |
ASTM D1922 | |
| Peel Strength | ≥2.0 N/15mm | ASTM F904 | |
| Chemical Properties | Acid and Alkali Resistance | Good (PE layer is acid and alkali resistant, PET is resistant to weak acids and alkalis) | Resistant to 5% HCl/NaOH solution at room temperature |
| Oil and Grease Resistance | Excellent (PET layer blocks oil and grease) | Suitable for oily food packaging | |
| Thermal Properties | Heat Sealing Temperature Range | 140-160℃ (PE inner layer) | Heat sealing strength ≥30 N/15mm |
| High Temperature Resistance | PET temperature resistance ≤150℃, PE temperature resistance ≤80℃ | Short-term tolerance | |
| Optical Properties | Transmittance | PET: 85-90% | ASTM D1003 |
| Haze | PET: 1.5-3.0% | ASTM D1003 | |
| Barrier Properties | Oxygen Transmission Rate (OTR) | 30-50 cm³/m² ·24h ·atm (25℃) | ASTM D3985 |
| Water Vapor Transmission Rate (WVTR) | 10-20 g/m² ·24h (38℃, 90%RH) | ASTM F1249 | |
| Dimensions | Common Bag Types | Three-side seal, stand-up pouch, zipper bag, etc. | Customizable |
| Thickness Range | Total thickness: 40-100μm | Adjusted according to the number of composite layers | |
| Applicable Standards | Food Safety | Complies with FDA, GB 9685 (food grade) | No migration of harmful substances |
| Environmental Certification | RoHS, REACH reports available | Based on customer needs | |
| Application Areas | Typical Uses | Food packaging, electronic product moisture-proof, daily chemical packaging |
Material characteristics: Polyethylene is polymerized from ethylene and has the characteristics of being non-toxic, odorless, acid and alkali resistant, low temperature resistant, waterproof and insulating. It is widely used in the packaging field.
Classification and structure
Classified by material density:
High-pressure PE bag (LDPE): Made of low-density polyethylene, it is flexible and transparent, suitable for food preservation film, soft packaging, etc.
Low-pressure PE bag (HDPE): Made of high-density polyethylene, it has high hardness and strong puncture resistance, suitable for heavy object packaging or industrial use.
Recyclable PE bag: Made of recycled polyethylene (such as Recycled LDPE/HDPE), which conforms to the environmental protection trend.
Classified by use and process:
Flat bag: The bottom is sealed, the structure is simple, and it is used for packaging lightweight items.
Resealable bag/zip lock bag: With a reusable sealing strip, it is convenient for storing food or small items.
Anti-static PE bag: Anti-static masterbatch is added to protect electronic products from electrostatic damage.
Core characteristics
Safety:
Food-grade PE bags meet national standards (GB4806.7-2016), are non-toxic and odorless, and are suitable for room temperature food packaging.
Not suitable for high temperature (>110℃), high oil or frozen environments, as it may release harmful substances.
Physical properties:
Low-temperature resistant (-50℃ to 80℃), good chemical stability, but easy to age at high temperatures.
High-pressure PE bags have high toughness but low strength; low-pressure PE bags have high strength but poor ductility.
Environmental protection:
Recyclable PE materials support recycling, reducing resource waste.
Application scenarios
Food packaging:
LDPE cling film is used for preserving vegetables and meat; HDPE bags are used for loose food in supermarkets.
Industry and logistics:
Anti-static PE bags are used for packaging electronic components; HDPE heavy-duty bags are used for transporting machinery parts.
Daily life:
Resealable bags store jewelry and small items; flat bags are used for packaging clothing and daily necessities.
Keyword:
PET/PE composite bag
It has the characteristics of flexibility, chemical corrosion resistance, and water resistance, and is widely used in packaging, agricultural covering, and industrial protection.
Categories:
More Products
Consulting
Contact Us
Tel: +86-21-67191543
Mobile: +86-13386070190
Email: 892065706@qq.com
Address: Xinghuo Industrial Park, Qingcun Town, Fengxian District, Shanghai, China.
Product Center
Subscribe Now
Please submit your cooperation consultation information through the form, and we will contact you as soon as possible.
Copyright © 2025 Shanghai Yuanrui International Trade Co., Ltd.