RAJNA compound range · flame-retardant injection moulding material
RAJNA-i3122 flame-retardant, crystallisable PLA compound
A medium-viscosity, PLA-based compound developed for injection-moulded technical products where a flame-retardant material concept and controllable crystallisation are required.
Key characteristics of RAJNA-i3122
RAJNA-i3122 is a medium-viscosity, flame-retardant injection moulding compound. According to the current public product description, the material can be crystallised during processing by using an elevated mould temperature of 100–120 °C, potentially increasing heat deflection performance and producing a more opaque appearance.
Important: the public product page does not state a verifiable UL 94 class or another specific flammability rating. Any classification must be communicated together with the current test standard, specimen thickness, colour, conditioning and valid test report.
Potential application areas
RAJNA-i3122 can be evaluated for technical injection-moulded products where a documented flammability requirement, a PLA-based material concept and increased heat performance through crystallisation are relevant. Suitability must be verified against the complete product specification.
Electrical and electronic housings
Housings or structural parts where a defined flammability test, documented minimum wall thickness and application-specific validation are required.
Household and industrial components
Injection-moulded parts exposed to heat and subject to a specified flammability requirement.
Custom technical products
Customer-specific components where flammability, mechanical performance, heat resistance and geometry must be assessed together.
Flammability: what must be defined?
The description “flame-retardant” is not sufficient on its own for approving a technical component. The applicable standard, required class, specimen thickness, colour and conditioning procedure must be defined at the beginning of the project.
Information required for technical assessment
- Applicable flammability standard and required classification.
- Minimum and nominal finished-part wall thickness.
- Material colour, pigment and any additional additives.
- Specimen geometry and conditioning procedure.
- Service temperature and environmental exposure.
- Customer, industry or certification documentation requirements.
Crystallisation and heat deflection performance
The current product description states that an elevated mould temperature can promote crystallisation. A more crystalline structure may produce a more opaque appearance and higher heat deflection performance, but the actual result must be verified on the processed component.
Mould temperature
The public product page states a mould-temperature range of 100–120 °C for promoting crystallisation during processing.
Cycle time and geometry
Required crystallisation time depends on wall thickness, part geometry, mould-temperature uniformity and target properties.
Finished-part validation
Heat deflection, warpage, dimensional stability and flammability must be assessed on representative specimens or finished parts.
Processing and quality-assurance guidance
Exact processing parameters must be defined from the current technical data sheet and production trials. For a PLA-based material, moisture control, melt thermal history and barrel residence time are particularly important.
| Processing technology | Injection moulding, after verifying compatibility of the machine, mould and required production cycle. |
|---|---|
| Viscosity category | The current public product description identifies the grade as a medium-viscosity material. |
| Crystallisation | Can be promoted using an elevated mould temperature of 100–120 °C. |
| Drying | Drying temperature, time and target moisture content must be set from the latest RAJNA-i3122 technical data sheet. |
| Material changeover | Thorough machine cleaning is particularly important for a flame-retardant formulation to prevent contamination by other materials. |
| Colour and additional additives | Pigments and additives can affect flammability, mechanical performance and processing behaviour. A modified formulation may require renewed testing. |
| Serial production | Serial manufacture should use an approved formulation, a documented process window and appropriate test records. |
Exact moisture limits, barrel-temperature settings and a verified flammability classification were not publicly available. These fields must be completed from the latest TDS and applicable test reports before publication or technical approval.
Testing and technical documentation
Approval of a flame-retardant product must be based on test reports and representative processing conditions rather than the material name alone.
Flammability testing
Testing according to the applicable standard on specimens or finished parts of the defined thickness, colour and conditioning state.
Thermal testing
HDT, DSC or finished-product heat exposure testing based on the achieved crystallinity and intended service conditions.
Mechanical and functional testing
Tensile, flexural, impact or application-specific functional testing based on the expected loading conditions.
Frequently asked questions about RAJNA-i3122
What is the main application of RAJNA-i3122?
Development of flame-retardant injection-moulded technical products where medium viscosity and controllable crystallisation are also required.
What UL 94 classification does the material have?
The public product page does not state a verifiable UL 94 class. The applicable classification must be confirmed from the current test report together with specimen thickness and colour.
Why is wall thickness important for flammability classification?
Burning behaviour and the achievable classification may vary with specimen thickness, so the rating must always be interpreted together with the documented thickness.
Can colour modification affect flame-retardant performance?
Yes. Pigments and other additives can affect flammability, mechanical properties and processing behaviour, so a modified formulation may require renewed evaluation.
Is increased heat resistance guaranteed?
No. Heat deflection performance depends on mould temperature, cycle time, crystallinity and part geometry and must be verified on the actual product.
Do you need RAJNA-i3122 documentation or trial material?
Send Tibor Sipos the applicable flammability standard, required class, part wall thickness, colour, service temperature and estimated annual volume. Based on this information, Friend Plastic can assess the material and define the required validation programme.