Knowde Enhanced TDS
Identification & Functionality
- Additives Included
- Chemical Family
- Polymer Name
- Plastics & Elastomers Functions
- Technologies
- Product Families
Features & Benefits
- Labeling Claims
- Materials Features
- Characteristics
- High transparency
- Lower melt temperature (190-195ºC)
- Low crystallization speed, low curling
- Sealing starting at 170ºC (depending on the sealing equipment): recyclable packaging made of polyamide
- Suitable for retort applications
Applications & Uses
- Markets
- Applications
- Plastics & Elastomers End Uses
- Plastics & Elastomers Processing Methods
- Application
Promyde® BF745 L is recommended for the production of:
- Coextruded symmetric and asymmetric cast and blown films with very low curling
- Monomaterial recyclable packaging
- Processing Guidelines
Drying
Material is supplied pre dried and ready to process. Bags should be stored in a dry place at room temperature. Storage time should not exceed twelve months. Material from open or damaged bags should be dried in a dry-air dryer at 70ºC, the drying time required will depend on the moisture content. Drying temperatures of above 70ºC should be avoided because of possible oxidation.
Extrusion Processing
Promyde® BF745 L may be processed on standard single-flighted, three-section screws. Better results can be obtained by using high-performance screws equipped with shearing and mixing sections. The screw length should be at least 24D, and preferably 28-33D to guarantee optimum plasticizing and conveying with the high through-put rates of film extrusion (D: screw diameter). A three-section screw should have a compression ratio (ratio of flight depth in the feed section to flight depth in the metering section) of 3:1 to 4:1.
It is recommended the length of screw sections as follows (L: overall length of screw):
- Feed section: 0.25 to 0.30 x L
- Compression section: 0.15 to 0.25 x L
- Metering section: 0.4 to 0.55 x L
Excellent processing and film properties can be obtained by using following temperatures at the extruder.
- Hopper: 40-50ºC
- Extruder: 200/230/240..250ºC
- Adapter&Die: 240-250ºC
Conditioning
Films made of Promyde® BF745 L will achieve their final dimensions and properties after equilibrium moisture absorption.
Properties
- Color
- Typical Properties
- Film Properties
- Specifications
| Value | Units | Test Method / Conditions | |
| Melting Point | 190-195 | °C | ISO 3146 |
| Crystallization Temperature | 140.0 | °C | ISO 3146 |
| Density | 1,15 | g/cm3 | ISO 1148 |
| Value | Units | Test Method / Conditions | |
| Modulus (MD) | 1500-1800 | MPa | ISO 527-3 |
| Stress at Break (MD) | 50-60 | MPa | ISO 527-3 |
| Elongation at Break (MD) | 300-350 | % | ISO 527-3 |
| Trouser Tear Force (MD) | 2-2.5 | N | ISO 6383-1 |
| Trouser Tear Resistance (MD) | 40-50 | N/mm | ISO 6383-1 |
| Puncture Energy (MD) | 2021-10-15 | mJ | ISO 14477 |
| Haze | max. 0.5 | % | ASTM D1003 |
| O2 Transmission Rate (23°C, 0% RH) | 25.0 | cc/m2.d | ASTM D3985 |
| O2 Transmission Rate (23°C, 50% RH) | 10.0 | cc/m2.d | ASTM D3985 |
| O2 Transmission Rate (23°C, 85% RH) | 25.0 | cc/m2.d | ASTM D3985 |
| Moisture Vapor Transmission Rate (23°C, 85% RH) | 9.0 | g/m2.d | ISO 15106-1 |
| Value | Units | Test Method / Conditions | |
| Melt Flow Rate (240°C/5Kg) | 15-25 | cc/10min | ISO1133 |
| Monomer Content | max. 0.5 | % | ISO 6427 |
| Moisture content | max. 0,1 | % | NAPPA-032 |
Regulatory & Compliance
- Certifications & Compliance
Packaging & Availability
- Packaging Type
- Packaging
Promyde® BF745 L is supplied in 25Kg moisture-proof packaging.
Storage & Handling
- Storage
The product should be stored in a dry place and opened just before processing.