4um Spacer PS Microspheres PAPS4UM

4um Spacer PS Microspheres PAPS4UM

SHBC PAPS4UM are precision 4 μm polystyrene microspheres developed for micron-level spacing, thickness control and structural support.

The spherical particles can be distributed between substrates, films or bonded components to help maintain a defined and consistent gap. PAPS4UM is suitable for LCD, PDLC, smart glass, optical films, electronic assembly and precision adhesive applications.

Product Specifications

Particle size distribution, solid content, supply form, packaging and storage conditions are provided according to the final specification and batch Certificate of Analysis.

Key Advantages

Precise 4 μm Spacing

The controlled particle diameter helps create a defined micron-level gap between two surfaces or functional layers.

Uniform Spherical Particles

Regular spherical morphology provides consistent support points and helps reduce local thickness variation.

Controlled Particle Size Distribution

Consistent particle sizing supports repeatable spacing performance in precision material systems.

Smooth Particle Surface

The smooth surface supports uniform dispersion in compatible coatings, adhesives, sealants and functional materials.

Stable PS Structure

The polystyrene matrix provides reliable particle integrity during dispersion, coating and assembly.

Scalable Manufacturing

SHBC supports sample evaluation, pilot production and bulk supply for industrial projects.

How Spacer Microspheres Work

Spacer microspheres are mixed into a compatible carrier or distributed between two substrates.

During assembly, the particles act as physical support points. Their diameter helps determine the final separation distance while preventing direct contact between the surfaces.

PAPS4UM is designed for applications requiring an approximately 4 μm spacing layer.

Main Applications

LCD Cell Gap Control

Used between display substrates to help maintain a consistent liquid crystal layer thickness.

PDLC Films

Suitable for polymer-dispersed liquid crystal films requiring controlled spacing and uniform film thickness.

Smart Glass

Can be evaluated in switchable and dimmable glass structures requiring precise separation between functional layers.

Optical Films and Components

Used for layer separation, coating thickness control and optical material development.

Precision Adhesive Bonding

Added to compatible adhesives or sealants to help control bond-line thickness.

Touch Panels and Sensors

Suitable for electronic structures requiring micron-level separation and mechanical support.

Semiconductor and Microelectronic Assembly

Can be evaluated for controlling the distance between chips, substrates and packaging materials.

Benefits for Manufacturers

PAPS4UM helps support:

• Controlled 4 μm gap formation

• More uniform layer thickness

• Reduced direct substrate contact

• Consistent spacer distribution

• Repeatable assembly processes

• Improved product uniformity

• Sample-to-bulk scale-up

• Customized specification development

Recommended Use

Disperse the microspheres evenly in the selected carrier, adhesive, coating or solvent system before application.

Important evaluation factors include:

• Carrier compatibility

• Microsphere concentration

• Material viscosity

• Dispersion time

• Ultrasonic conditions

• Coating or spraying method

• Target particle density

• Required final gap

Use gentle mixing or optimized ultrasonic dispersion to minimize particle aggregation. Customers should confirm compatibility under their actual manufacturing conditions.

Custom Spacer Microsphere Solutions

SHBC can customize spacer microspheres according to specific application requirements.

Customization options may include:

• Particle diameter

• Particle size tolerance

• Particle size distribution

• Solid content

• Dispersion medium

• Surface treatment

• Dry powder or suspension

• Packaging quantity

• OEM and ODM supply

Please provide the target gap, application, carrier material and required quantity when requesting customization.

Quality Control

SHBC applies controlled manufacturing and batch inspection to support reliable product performance.

Available documents may include:

• Certificate of Analysis

• Technical Data Sheet

• Safety Data Sheet

• Particle size test report

• Batch inspection record

• Customized specification sheet

Why Choose SHBC?

Shanghai SanYu Biotechnology Co., Ltd. manufactures polymer microspheres, silica microspheres, magnetic beads and functional particle materials.

SHBC provides:

• Precision particle manufacturing

• Stable batch-to-batch quality

• Multiple particle sizes

• Custom formulation support

• Sample evaluation

• Pilot-scale production

• Bulk manufacturing

• OEM and ODM services

Frequently Asked Questions

What are PAPS4UM microspheres?

PAPS4UM are nominal 4 μm polystyrene microspheres designed for precision spacing and thickness-control applications.

What are 4um spacer microspheres used for?

They can be used in LCD panels, PDLC films, smart glass, optical materials, adhesive bonding and electronic assembly.

How do spacer microspheres control the gap?

The particles form physical support points between two surfaces. Their diameter helps define the final separation distance.

Can PAPS4UM be mixed into adhesives?

Yes. They can be evaluated in compatible adhesives and sealants to help control bond-line thickness.

Are PAPS4UM suitable for LCD and PDLC applications?

PAPS4UM can be evaluated as spacer particles in LCD, PDLC and related display material systems.

Can SHBC customize the particle size?

Yes. Particle size, tolerance, dispersion medium, solid content and packaging can be customized according to project requirements.

Are samples available?

Samples are available for dispersion, compatibility and process evaluation before bulk ordering.

Does SHBC support bulk production?

Yes. SHBC supports laboratory samples, pilot orders and long-term bulk supply.

Request a Sample or Quotation

Contact SHBC for PAPS4UM samples, technical specifications, customized spacer microspheres and bulk pricing.

Please provide:

• Target application

• Required gap thickness

• Required quantity

• Preferred supply form

• Carrier or solvent system

• Packaging requirements

• Estimated annual demand

Product: 4um Spacer PS Microspheres
Catalog Number: PAPS4UM
Material: Polystyrene, PS
Nominal Particle Size: 4 μm
Brand: SHBC
Manufacturer: Shanghai SanYu Biotechnology Co., Ltd.