Oak-trees,Inc. is dedicated to developing technologies for film processing and tape processing to solve issues related to tape and film for electric wires. As a tape processing manufacturer that tackles challenging problems, we provide unique value to our global partners that other companies cannot offer. If you have any issues, please feel free to consult with us.
Challenges addressed
through technology development
- Heat resistance
- Electrical insulation
- Dielectric properties
- Weather resistance
- Flame retardancy
- Processability
- Durability
- Miniaturization and weight reduction
- Cost reduction
Scope of technology development
Our company handles everything from the research and development of adhesives and substrates to the development of processing technologies, including micro-slit processing and lamination processing.
Our proprietary technologies
Micro-slit processing of thin films with a thickness of 2.5 µm
By leveraging our advanced equipment and technical expertise, we achieve the processing of films as thin as 2.5 µm, solving your challenges. Thin film processing enables the miniaturization and weight reduction of final products, revealing the potential for adding high value to thin films. While meeting the functional requirements of the film is a given, we can also propose solutions, including layer structure and material selection, based on your needs. Please feel free to share your requirements with us.
Finishing of long lengths exceeding 20,000 meters
By increasing the winding length, we can address and solve your challenges by:
①Reducing the number of setup changes during production.
②Achieving environmental sustainability by reducing the amount of materials used.
When the bobbin is installed in your production equipment, the increased winding length decreases the frequency of setup changes, thereby enhancing productivity. Additionally, long-length winding naturally reduces the amount of material used, contributing to environmental sustainability.
t2.5㎛ PET film coating process
We has expertise in low-tension film winding and conveyance, and possesses compact coating machines that can handle coating processes with a narrow width of 80 mm.
We also have the ability to develop difficult specifications through close coordination with material manufacturers. In order to maintain stable processing accuracy, we properly control the temperature and humidity of materials and perform highly accurate coating processes that apply adhesives to film substrates.
In particular, even for ultra-thin materials as thick as 2.5 µm, our low-tension control technology enables processing with minimal thermal shrinkage and stress.
Our equipment and facilities
In addition to the aforementioned technical capabilities, we meet your requirements through the following equipment and facilities that we possess:
List of Processing Equipment
Slitter Equipment
No | Roll Width | Unwinding Load Capacity | Winding Load Capacity | Unwind Inch | Unwound Product Outer Diameter | Maximum Outer Diameter of Wound Product | Winding Inch | Minimum Achieved Width |
---|---|---|---|---|---|---|---|---|
1 | 580mm | - | - | 3Inch | 400φ | 300φ | 1Inch 2Inch 3Inch | 3mm(G5) |
2 | 580mm | - | - | 3Inch | 400φ | 300φ | 1Inch 2Inch 3Inch | 6mm(ALPET) |
3 | 780mm | 200kg | - | 3Inch 6Inch 12Inch | 500φ(560φ) | 500φ | 3Inch 6Inch | 3mm(PET9) |
4 | 660mm | 150kg | - | 3Inch 6Inch | 500φ | 400φ | 3Inch | 80mm~ |
5 | 660mm | 150kg | - | 3Inch 6Inch | 500φ | 400φ | 3Inch | 3.5mm(metal) |
6 | 660mm | 150kg | 52kg | 3Inch 6Inch | 500φ | 400φ | 3Inch | 3.5mm(PET9) |
7 | 1300mm | 300kg | 42kg | 3Inch 6Inch | 500φ~600φ | 500φ | 3Inch | 80mm~ |
8 | 1200mm | 500kg | 170kg | 3Inch 6Inch | 700φ | 400φ | 3Inch | - |
9 | 300mm | - | - | 3Inch | 270φ | 200φ | 3Inch | - |
Micro Slitter Equipment
No | Roll Width | Unwinding Load Capacity | Winding Load Capacity | Unwind Inch | Unwound Product Outer Diameter | Maximum Outer Diameter of Wound Product | Winding Inch | Minimum Achieved Width |
---|---|---|---|---|---|---|---|---|
1 | 180mm | 40kg | - | 3Inch | φ500 | Φ120 (Φ140 if no guide) | ID30.3Inch | text |
2 | 120mm | - | - | 3Inch | φ360 | - | ID30.3Inch | 1.6 |
3 | 180mm | - | - | 3Inch | φ520 | - | ID30 | 0.6 |
4 | 180mm | - | - | 3Inch | φ540 | - | ID30 | 0.6 |
5 | 180mm | 40kg | 5kg | 3Inch | φ580 | φ120 | ID30.3Inch | 0.6 |
6 | 180mm | 40kg | 5kg | 3Inch | φ580 | φ120 | ID30.3Inch | 0.6 |
7 | 180mm | 40kg | 5kg | 3Inch | φ580 | φ120 | ID30.3Inch | 0.6 |
8 | 180mm | 40kg | 5kg | 3Inch | φ580 | φ120 | ID30.3Inch | 0.6 |
9 | 350mm | 200kg | 5kg | 3Inch | φ800 | φ300 | P-30.3Inch | - |
10 | - | - | - | 3Inch | φ320 | - | P-30.3Inch | - |
Coating Equipment
Equipment Name | Substrate Width | Using for |
---|---|---|
Large Coating Machine | 500mm~1080mm | Gravure Coating, Dry Lamination |
Small Coating Machine | 80mm~500mm | Gravure Coating, Knife Coating, Dry Lamination |
Heat Laminator
No | Usage Temperature | Preheat Roll Temperature | Width | Core Diameter | Maximum Original Roll Diameter (Substrate Side) | Maximum Original Roll Diameter (Dry Side) | Maximum Winding Diameter | Pressurization Method |
---|---|---|---|---|---|---|---|---|
1 | Max150℃ | 100℃ | 550mm | 3Inch(6Inch for Raw material side) | φ700 | φ500 | φ350 | Air Cylinder |
Rewinder
Roll Width | Unwinding Diameter | Winding Diameter | Strap Winding Diameter | Core Diameter | Tension | Load Capacity |
---|---|---|---|---|---|---|
200mm | φ450mm | φ350mm | φ450mm | 3Inch | 10~40N | 30kg |
List of Inspection Equipment
Equipment Name | Manufacturer Name | Model Number |
---|---|---|
Digital Microscope | KEYENCE CORPORATION | VHX-7000 |
Ultra-Depth Multi-Angle Lens | KEYENCE CORPORATION | VHX-D510 |
Shape Analysis Laser Microscope | KEYENCE CORPORATION | VK-X1000 |
Laser Element Analysis Head | KEYENCE CORPORATION | EA-300 |
Image Dimension Measurement Device | KEYENCE CORPORATION | IM-8030 |
Dielectric Measurement Device | AET, Inc. | Cavity Resonator |