Technologies

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.

Scope of technology development

Our proprietary technologies

Micro-slit processing of thin films with a thickness of 2.5 µm

Micro-slit processing of thin films with a thickness of 2.5 µm | Technologies

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

Finishing of long lengths exceeding 20,000 meters | Technologies

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

t2.5㎛ PET film coating process | Technologies

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

NoRoll
Width
Unwinding
Load
Capacity
Winding
Load
Capacity
Unwind
Inch
Unwound
Product
Outer Diameter
Maximum Outer
Diameter of
Wound Product
Winding
Inch
Minimum
Achieved
Width
1580mm--3Inch400φ300φ1Inch
2Inch
3Inch
3mm(G5)
2580mm--3Inch400φ300φ1Inch
2Inch
3Inch
6mm(ALPET)
3780mm 200kg-3Inch
6Inch
12Inch
500φ(560φ)500φ3Inch
6Inch
3mm(PET9)
4660mm150kg-3Inch
6Inch
500φ400φ3Inch80mm~
5660mm150kg-3Inch
6Inch
500φ400φ3Inch3.5mm(metal)
6660mm150kg52kg3Inch
6Inch
500φ400φ3Inch3.5mm(PET9)
71300mm300kg42kg3Inch
6Inch
500φ~600φ500φ3Inch80mm~
81200mm500kg170kg3Inch
6Inch
700φ400φ3Inch-
9300mm--3Inch270φ200φ3Inch-

Micro Slitter Equipment

NoRoll
Width
Unwinding
Load
Capacity
Winding
Load
Capacity
Unwind
Inch
Unwound
Product
Outer Diameter
Maximum Outer
Diameter of
Wound Product
Winding
Inch
Minimum
Achieved
Width
1180mm40kg-3Inchφ500Φ120 (Φ140 if no guide)ID30.3Inchtext
2120mm--3Inchφ360-ID30.3Inch1.6
3180mm--3Inchφ520-ID300.6
4180mm--3Inchφ540-ID300.6
5180mm40kg5kg3Inchφ580φ120ID30.3Inch0.6
6180mm40kg5kg3Inchφ580φ120ID30.3Inch0.6
7180mm40kg5kg3Inchφ580φ120ID30.3Inch0.6
8180mm40kg5kg3Inchφ580φ120ID30.3Inch0.6
9350mm200kg5kg3Inchφ800φ300P-30.3Inch-
10---3Inchφ320-P-30.3Inch-

Coating Equipment

Equipment NameSubstrate WidthUsing for
Large Coating Machine500mm~1080mmGravure Coating, Dry Lamination
Small Coating Machine80mm~500mmGravure Coating, Knife Coating,
Dry Lamination

Heat Laminator

NoUsage
Temperature
Preheat Roll
Temperature
WidthCore
Diameter
Maximum Original
Roll Diameter
(Substrate Side)
Maximum Original
Roll Diameter
(Dry Side)
Maximum
Winding
Diameter
Pressurization
Method
1Max150℃100℃550mm3Inch(6Inch for Raw material side)φ700φ500φ350Air Cylinder

Rewinder

Roll
Width
Unwinding DiameterWinding DiameterStrap Winding DiameterCore DiameterTensionLoad Capacity
200mmφ450mmφ350mmφ450mm3Inch10~40N30kg

List of Inspection Equipment

Equipment NameManufacturer NameModel Number
Digital MicroscopeKEYENCE CORPORATIONVHX-7000
Ultra-Depth Multi-Angle LensKEYENCE CORPORATIONVHX-D510
Shape Analysis Laser MicroscopeKEYENCE CORPORATIONVK-X1000
Laser Element Analysis HeadKEYENCE CORPORATIONEA-300
Image Dimension Measurement DeviceKEYENCE CORPORATIONIM-8030
Dielectric Measurement DeviceAET, Inc.Cavity Resonator