Full-chainsolution

Qingdao Lang’en Jiachi New Materials Technology Co., Ltd. specializes in the research, development, production, and application of tire noise-reduction and functional materials.

Established in 2018, we have continually developed our technology and refined our products, building the SILENT ZONE 4.0 product portfolio.

To meet tire noise-reduction, self-sealing, bonding, and installation needs, we have progressively built a product and service offering spanning functional materials, acoustic products, installation equipment, and application processes.

For tire manufacturers, the automotive aftermarket, and professional service providers, we optimize materials, processes, and equipment together to improve application efficiency and reliability in use.

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Silent foam with double-sided adhesiveSilent foam with three self-sealing adhesive stripsSilent foam with full-surface self-sealing adhesiveSelf-sealing sealantTire inner liner cleanerSilent foam applicatorSilent foam with double-sided adhesiveSilent foam with three self-sealing adhesive stripsSilent foam with full-surface self-sealing adhesiveSelf-sealing sealantTire inner liner cleanerSilent foam applicatorSilent foam with double-sided adhesiveSilent foam with three self-sealing adhesive stripsSilent foam with full-surface self-sealing adhesiveSelf-sealing sealantTire inner liner cleanerSilent foam applicator

SILENT ZONE 4.0 Product Series

Silent foam with double-sided adhesive
Silent foam with double-sided adhesive
A convenient, efficient solution for tire noise reduction
A proven laminated bonding structure combines acoustic materials with a high-performance adhesive system for the automotive aftermarket and standardized noise-reduction installation.
Features
- Easy installation
- Efficient application
- A wide range of specifications
- Suitable for standardized installation
- Good conformity to the tire inner liner
Silent foam with three self-sealing adhesive strips
Silent foam with three self-sealing adhesive strips
Combining noise reduction and self-sealing
A composite structure of flexible self-sealing material and silent foam reduces tire noise while providing continuous internal sealing.
Compared with traditional rigid bonding systems, flexible materials better accommodate dynamic deformation and impact during tire operation.
Features
- Combined noise reduction and self-sealing
- Flexible structure
- Good adaptability to deformation
- Stable performance in long-term operation
- Suitable for tire manufacturers and aftermarket applications
Silent foam with full-surface self-sealing adhesive
Silent foam with full-surface self-sealing adhesive
Wider coverage for improved sealing and contact
A composite structure combining a broad layer of self-sealing material with silent foam increases contact with the tire inner liner, further integrating noise reduction and self-sealing.
Features
- Wide-area contact
- Good interfacial conformity
- Integrated noise reduction and sealing
- Suitable for different tire sizes
- Customizable for specific application needs
Self-sealing sealant
Self-sealing sealant
Flexible self-sealing material solutions
The self-sealing sealant is primarily used inside tires for self-sealing applications. It can also be used in lamination, coating, and other functional material systems to meet different product requirements.
The material’s viscoelastic properties, structural stability, and flow behavior are designed together to provide good deformability and sealing capability while maintaining long-term stability.
Basic principles
1. A foreign object punctures the tire
2. The sealing material deforms locally
3. The material flows toward and fills the damaged area
4. It surrounds and seals the puncture channel
5. This reduces the risk of air leakage
The material also provides good interfacial wetting and adhesion, forming a stable bond with the tire inner liner and accommodating vibration, deformation, and temperature changes during long-term tire operation.
Tire inner liner cleaner
Tire inner liner cleaner
Effectively removes curing bladder release agent from the tire inner liner
Before applying silent foam, pour a suitable amount of cleaner into the tire and evenly wet the area where the foam will be applied. The cleaner releases the silicone-based residue responsible for the slippery inner liner surface. Promptly wipe the area clean with a towel before applying the foam.
Features
- Easy to operate
- Lower cost
- Suitable for small-batch and flexible foam application
- Effective cleaning
Silent foam applicator
Silent foam applicator
Efficient silent foam application with accurate alignment and firm pressure
The applicator helps prevent misalignment and insufficient pressure during manual application. Misalignment affects appearance and, more importantly, balance; application in areas subject to deformation can cause debonding. Insufficient pressure directly weakens the adhesive bond to the tire during use, greatly increasing the risk of foam detachment and debonding.
Features
- Easy to operate
- Lower start-up cost
- Suitable for small-batch and flexible foam application
- Fully mechanical centering
- Accurate alignment and firm application pressure
- Swivel casters at all four corners for easy movement

SILENT ZONE4.0Explore the full technical story ↗

R&D and productAdvantagesExplore the full R&D story ↗

At Lang’en Jiachi

We reshape mobility through innovative technology

Helping drivers around the world enjoy a quieter, safer, and more comfortable ride.

We are committed to providing stable, efficient, and convenient tire functional material solutions for tire manufacturers, the automotive aftermarket, and professional service providers. By coordinating materials, processes, and equipment, we improve application efficiency and reliability. From materials to applications, we deliver complete solutions. Qingdao Lang’en Jiachi supplies more than individual products: we focus on their overall performance in real tire applications.We are committed to providing stable, efficient, and convenient tire functional material solutions for tire manufacturers, the automotive aftermarket, and professional service providers. By coordinating materials, processes, and equipment, we improve application efficiency and reliability. From materials to applications, we deliver complete solutions. Qingdao Lang’en Jiachi supplies more than individual products: we focus on their overall performance in real tire applications.