Common Materials Used in Semiconductor Conveying Systems
Semiconductor conveying systems may be used to transfer fine powders, granules, plastic pellets, functional additives and other contamination-sensitive process materials. The correct conveying method depends on particle size, bulk density, flowability, cleanliness requirements and production conditions.
At Access Technology, our team helps manufacturers assess the material, required capacity, conveying route and connected equipment before recommending a suitable conveying arrangement.
Materials That May Be Handled in Semiconductor-Related Production
Materials vary considerably between semiconductor-related processes. Their physical properties affect feeding, transfer, filtration, receiving and discharge.
| Material Category | Possible Examples | Main Conveying Considerations |
|---|---|---|
| Fine powders | Process powders, mineral-based powders or specialised additives | Dust generation, flowability, filtration and contamination sensitivity |
| Granules and pellets | Plastic resin, polymer pellets or granular production materials | Particle damage, static behaviour, transfer rate and pipeline routing |
| Functional additives | Dosing additives, pigments or formulation ingredients | Dosing accuracy, segregation and cross-contamination |
| Sensitive process materials | Fine or contamination-sensitive materials | Enclosed transfer, cleanliness, compatible construction and controlled discharge |
| Recovered materials | Regrind or reusable process material, where applicable | Irregular particle size, feeding consistency and blockage risk |
This is a general overview rather than a definitive list. Each application must be considered according to its material properties, production stage and cleanliness requirements.
Not Every Semiconductor Material Uses the Same Conveying Method
The term “semiconductor material” can include solids, liquids, gases, chemicals, substrates and packaging materials. Not all of these materials are suitable for pneumatic or dry-material conveying.
Depending on the application, the transfer method may involve:
- Vacuum conveying
- Pressure conveying
- Mechanical feeding
- Controlled dosing equipment
- Enclosed material-transfer arrangements
- Specialised liquid or gas-delivery systems outside this article’s scope
Dry powders, granules and plastic pellets may suit an enclosed bulk-material transfer arrangement. Process gases, solvents, acids and liquid chemicals require purpose-designed delivery systems.
The correct transfer method depends on the material form, process stage, contamination requirements and connected production equipment.
Common Material Categories in Semiconductor Conveying Applications
Fine Powders Used in Semiconductor Manufacturing
Fine powders may generate dust, flow inconsistently or remain inside pipelines and receivers. Their behaviour can change according to particle size, moisture content, compaction and storage conditions.
Important considerations include:
- Dust generation during pickup and discharge
- Restricted or inconsistent flow
- Filter loading
- Pipeline residue
- Contamination sensitivity
- Receiver discharge performance
Very fine particles may pass through unsuitable filters, while cohesive powders may bridge inside hoppers or accumulate around bends and valves. Rather than selecting equipment based only on conveying capacity, we consider the complete transfer path, including storage, feeding, pipeline movement, filtration, receiving and downstream discharge.
Plastic Pellets and Granular Materials
Plastic pellets and granular materials are often more free-flowing than powders, but they still require suitable pipeline, receiver and discharge design. Excessive velocity may damage particles, generate fines or increase impact at bends.
Important factors include:
- Required transfer rate
- Particle size and shape
- Pellet or granule damage
- Static behaviour
- Pipeline velocity
- Receiver and discharge design
A correctly sized pipeline alone cannot ensure stable material transfer if feeding or discharge is inconsistent.
Functional Additives and Dosing Materials
Functional additives may be used in smaller quantities than the main production material. Their transfer arrangement may therefore need to prioritise controlled feeding, weighing and dosing rather than high-volume movement.
Key factors include:
- Target dosing accuracy
- Batch size and feed rate
- Material segregation
- Cross-contamination risk
- Weighing-system integration
- Recipe and control requirements
Where required, we coordinate material transfer with weighing, batching or dosing equipment according to the agreed project scope.
Contamination-Sensitive Process Materials
Contamination-sensitive materials may require enclosed handling to reduce unnecessary exposure and support controlled transfer, cleaning and maintenance.
Important considerations include:
- Enclosed pickup and transfer
- Compatible material-contact components
- Residue and cross-contamination risks
- Receiver and filter cleanliness
- Cleaning and maintenance access
- Integration with connected equipment
Our work involving vacuum and automation solutions for electronics and semiconductor manufacturing may include vacuum control, piping, automation and production-support requirements according to the agreed scope.
We describe these materials as contamination-sensitive rather than promising a completely contamination-free process. Final cleanliness targets must be confirmed for each application.
Secondary or Recovered Process Materials
Some manufacturers may return suitable recovered material to a production process. Variations in particle size, shape, fines content and bulk density can make these materials harder to feed consistently.
Recovered material should only be considered where it is suitable and permitted within the production process. We do not assume that it is appropriate for critical semiconductor production.
How Material Properties Shape Conveying-System Design
Material properties influence how a conveying system is configured, from component selection to operating performance. The following decision table combines the main material characteristics with the engineering areas we normally consider.
| Material Characteristic | Why It Matters | We Normally Consider |
|---|---|---|
| High dust generation | Can affect containment and filter loading | Enclosed transfer, receiver design and filtration |
| Low or variable bulk density | Influences feeding, airflow and transfer capacity | Feeder selection and system sizing |
| Fine particle size | Affects flow, filtration and pipeline behaviour | Filter configuration and suitable transfer velocity |
| Wide particle-size distribution | May cause segregation or inconsistent discharge | Feeding stability and receiver design |
| Poor flowability | Can cause bridging or irregular feeding | Hopper, feeder and discharge-equipment design |
| Moisture or stickiness | May increase adhesion, buildup and blockage | Buildup prevention and accessible system design |
| Fragility | Particles may degrade under excessive impact | Lower velocity and reduced-impact routing |
| Abrasiveness | May increase wear on pipelines, bends and valves | Wear-resistant components and routing |
| Contamination sensitivity | Residue may affect later batches or processes | Enclosed construction and cleaning access |
| Static behaviour | May require additional engineering controls | Grounding and compatible component selection |
This table provides initial guidance rather than a final equipment specification. Accurate material information and further application review are required before a conveying arrangement is confirmed.
Vacuum or Pressure Conveying: Which May Be More Suitable?
Neither vacuum nor pressure conveying is universally better. The appropriate approach depends on the material, route, capacity, pickup points, discharge requirements and production process.
| Conveying Approach | May Be Considered When | Important Qualification |
|---|---|---|
| Vacuum conveying | Material is drawn from one or more pickup points towards a receiver | Suitability depends on route length, capacity and material behaviour |
| Pressure conveying | Material must move over a longer route or at a higher production scale | Proper feeding, pressure and discharge configuration are required |
| Dilute-phase conveying | Higher conveying velocity is acceptable | Particle degradation, dust and abrasion must be considered |
| Dense-phase conveying | Lower velocity or greater material protection may be important | It is not automatically suitable for every fragile or abrasive material |
Our approach to selecting and supplying pneumatic conveying systems begins with application data rather than a standard equipment package.
Vacuum conveying may help contain material around pickup points because the pipeline generally operates below atmospheric pressure. Pressure conveying may suit longer distances, higher capacities or different plant layouts, provided the feeding, pressure and discharge arrangements are configured correctly.
Pipeline design also affects the vacuum available at the pickup or receiving point. Our guide on how vacuum piping influences pump performance explains the effects of pipe diameter, routing, leakage, bends, valves and pressure loss.
Why Cleanliness and Material Compatibility Matter
Cleanliness is important when a system handles sensitive materials or different formulations. Residue inside a pipeline, receiver or valve may affect the next batch or interfere with equipment performance.
Key considerations include:
- Cross-contamination between materials or batches
- Residue inside pipelines
- Receiver and filter cleanliness
- Dead spaces around bends and valves
- Material-contact construction
- Cleaning and inspection access
- Compatibility with connected equipment
- Agreed cleanliness and compliance requirements
Pipelines, seals, hoses, filters and valves must also be compatible with the transferred material and operating conditions.
Where vacuum equipment forms part of the arrangement, our customised vacuum-system engineering support may include pump selection, piping, controls, installation and testing according to the agreed project scope.
Final material-contact construction, cleanliness, compatibility and compliance requirements must be confirmed for each application.
How We Configure and Integrate the Conveying System
A conveying system normally connects storage, feeding, weighing, processing or packaging equipment rather than operating independently. Every project therefore begins with understanding the material and production objective before individual components are selected.
1. Establish the Material and Operating Requirements
We identify the material form, physical properties, required throughput, operating pattern and project objective. This helps us determine whether vacuum conveying, pressure conveying, mechanical feeding, dosing or another transfer arrangement should be considered.
2. Examine the Route and Connected Equipment
We consider the horizontal distance, vertical lift, bends, pickup points, discharge points and available plant space. We also determine how the system must connect with silos, hoppers, feeders, receivers, weighing equipment and downstream machinery.
We configure material conveying systems for semiconductor production around these process and equipment requirements.
3. Select and Configure the Required Components
The arrangement may include feeders, pickup devices, pipelines, receivers, filters, vacuum pumps or blowers, valves, sensors and discharge equipment.
Where vacuum integration is required, our vacuum technology integration capabilities across Southeast Asia support the coordination of pumps, pipelines, controls and machine interfaces.
4. Plan Production-Line and Control Integration
Our team coordinates material transfer, feeding, weighing and control signals with connected production equipment according to the agreed scope.
For projects requiring broader production-line coordination, our automation and material-handling solutions may include conveying, batching, weighing, packaging and control-system integration.
Where PLC controls and machine interfaces are required, our industrial automation integration services in Malaysia may support control sequences, alarms, interlocks, installation and testing.
5. Complete Installation, Testing and Handover
Installation, operating adjustments and system checks are completed according to the agreed project scope. These checks may cover equipment operation, material flow, control sequences and machinery integration.
Our engineering and technical support services may also include installation, maintenance, repair and ongoing assistance.
What Information Should Manufacturers Prepare?
Complete project information helps us compare suitable conveying approaches and avoid assumptions during system configuration.
1. Material Details
Manufacturers should prepare:
- Material name and physical form
- Particle size and distribution
- Bulk density
- Moisture and flow behaviour
- Abrasiveness or fragility
- Dust and contamination sensitivity
- Relevant safety information
Material data sheets and representative samples may help clarify the application where available.
2. Capacity and Conveying Route
Useful operating and route information includes:
- Required throughput and batch size
- Operating hours and transfer frequency
- Current production issue or objective
- Horizontal distance and vertical lift
- Number of bends
- Pickup and discharge locations
- Future capacity requirements
A specific transfer rate is more useful than a general request for a high-capacity system.
3. Plant and Equipment Information
Manufacturers should provide available:
- Plant layouts and equipment drawings
- Site photographs
- Space and height limitations
- Utility information
- Installation and maintenance access
- Details of silos, hoppers and feeders
- Information on receivers and downstream machinery
Additional site information may be needed where the route or integration points cannot be confirmed from drawings and photographs.
4. Cleanliness and Integration Requirements
The project information should also cover:
- Cleanliness and contamination-control expectations
- Material-contact requirements
- Cleaning methods
- Temperature and humidity conditions
- Abrasion or corrosion concerns
- Existing PLCs and control panels
- Required equipment signals and interlocks
- Applicable plant or compliance requirements
Our guide on preparing for an automation integration project provides a broader checklist covering equipment, controls, layouts and installation planning.
Start with the Material Before Selecting the System
The appropriate conveying arrangement depends on the material behaviour, required capacity, route and connected production process.
Our team can review these requirements and recommend a suitable configuration for semiconductor manufacturing applications in Malaysia.
Contact UsFrequently Asked Questions
A semiconductor conveying system may handle suitable dry powders, granules, plastic pellets, functional additives and other bulk process materials. Suitability depends on particle size, bulk density, moisture, flowability, contamination sensitivity and process requirements.
One system may handle several materials when their properties and cleaning requirements are compatible. Cross-contamination, residue, changeover procedures, filtration and material-contact components must be considered first.
Vacuum conveying may suit certain fine powders because it supports enclosed transfer. Powder flowability, dust generation, filtration, route length, required capacity and receiver discharge must still be reviewed.
Important details include material properties, throughput, batch size, conveying route, plant layout, connected equipment and cleanliness requirements. Complete information helps us recommend a more appropriate conveying arrangement.
Selecting a Conveying System Around the Material
In summary, semiconductor-related production may involve powders, granules, pellets, functional additives and other sensitive materials. The conveying arrangement should be selected according to the material properties, required capacity, cleanliness requirements, route and connected equipment.
At Access Technology, we support manufacturers by considering these factors before configuring and integrating a suitable material conveying solution in Malaysia.