OSI Prince Measurement for Online Phase Difference Instrument for Universal Film

OSI Prince Measurement for Online Phase Difference Instrument for Universal Film

Online phase difference meter KOBRA-WI/SPC for general film

■ Characteristics
Measurement method:

Parallel Nicol spectroscopy method
Measurement items: phase difference, orientation angle

Oji Keisoku (OSI Prince Measurement) KOBRA-WI/SPC Universal Film Online Phase Difference Meter Product Introduction

1、 Core positioning and measurement principles

1. Product positioning

• Core purpose:Real time online measurement of phase difference, molecular alignment angle (sin2 φ), and birefringence uniformity of universal transparent filmsMonitor the stability of stretching/coating/slitting processes to achieve full range quality traceability and closed-loop process control

• Core advantages:Non contact, high-speed continuous, full range scanning, multi wavelength dispersion, IP54 industrial protection, plug and play, PLC real-time communication

• Applicable scenarios: PET/PP/PE/PS/PC/nylon packaging film, optical film, shrink film, adhesive tape base film, etcProduction line online quality inspection, stretching process optimization, full width uniformity monitoring, real-time removal of defective products

2. Measurement principle (parallel Nicol rotation method)

• Optical architecture:Rotating polarizer+fixed polarizer+LED light source+high-speed spectral detectionNon contact transmission measurement, does not damage the film and does not affect the operation of the production line

• Core logic: Polarized light passes through a thin film to generate birefringence phase delay, and interference spectra are collected through a rotating analyzer for real-time calculationPhase difference, alignment angleThe SPC multi wavelength mode can obtain wavelength dispersion curves and evaluate the wavelength matching characteristics of optical films

• Light source:High stability LED solid-state light source(Life>20000 hours), no preheating, anti vibration, suitable for continuous operation of industrial production lines

2、 Key technical parameters (standards)

1. Measure core parameters

• Measurement items:Phase difference (retardation), alignment angle (sin2 φ), birefringence Δ n (input thickness automatically calculated)

• Phase difference range:1~5000nm (standard), expandable to 20000nm(Covering the entire phase difference range of universal thin films)

• Phase difference repeatability accuracy:≤±1nm(3σ)

• Alignment angle accuracy:±0.1°Resolution 0.01 °

• Measurement wavelength:

• KOBRA-WI (Standard):590nm (single wavelength)

• KOBRA-WI/SPC (Multi wavelength Extension):590nm (main)+450/550/630/750nm (time-division switching, five band)

• Measurement spot: standard5.8mm×5.8mm（33mm²）Adapt to full frame scanning

• Measurement speed:Single point position ≤ 50ms, supportContinuous full frame scanning (maximum line speed of 10m/s)

• Sample specifications: transparent film,Thickness ≤ 3mm, width ≤ 2500mm (customizable)Linear velocity 0~10m/s

2. Industrial hardware specifications (online dedicated)

• Structure: Split type（Measuring head+controller）IP54 protection for measuring head, built-in air blowing interface, dust/water vapor prevention, suitable for harsh environments on production lines

• Installation:Plug and PlayIt can be directly fixed above the production line frame (stretching machine/coating machine/slitting machine) without the need to modify the production line structure

• Communication interface:EtherCAT, 4-20mA analog RS232/485、 EthernetDirectly connect with PLC/SCADA to achieve real-time data upload, process feedback, and automatic alarm/rejection

• Power supply: AC100~240V, 50/60Hz

• Environment: Temperature 10~40 ℃, humidity 30~80% RH (no condensation), anti vibration level meets industrial standards

• Size/Weight: Measuring head approximately W200 × D300 × H150mm, weighing approximately 8kg; controller approximately W400 × D300 × H200mm, weighing approximately 12kg

3. Software and data functions (KOBRA-DSP online dedicated)

• Real time monitoring: Full amplitude phase difference/alignment angle two-dimensional distribution map, trend curve, real-time display of numerical values, high brightness alarm for abnormal points

• Data statistics: mean, standard deviation Cpk、 Full width uniformity analysis, historical data tracing (exported from CSV/Excel/PDF)

• Process linkage: Closed loop with production line PLC,Real time feedback on stretching ratio/temperature/tension parameters, automatic adjustment of processes, and reduction of defects

• Operation: One click calibration, parameter preset, full range scanning path customization, qualified threshold setting, automatic generation of quality inspection report

3、 Core product advantages (online dedicated, different from desktop models)

1. Truly online non-contact, without interfering with the production line

• Transmission non-contact measurement,No contact, no scratches, no shutdown, no decelerationSuitable for high-speed roll to roll production lines (0~10m/s)

• Full range continuous scanning, replacing offline sampling,100% coverage of the width, eliminating missed inspections and achieving full quality traceability

2. Multi wavelength/SPC extension to meet the dispersion requirements of optical films

• Standard 590nm meets the requirements of universal packaging film; **/SPC five wavelength (450~750nm) * * can measure wavelength dispersion, suitable for optical compensation film and polarizer matching film optical performance evaluation

• Multiple wavelength potential differences can be obtained through a single scan, eliminating the need for multiple measurements and improving efficiency

3. Industrial grade stability, plug and play, low maintenance cost

• measuring headIP54 protection+air blowingAdapt to production line dust, temperature and humidity fluctuations, and operate stably for a long time

• LED light source has a long lifespan, maintenance free, and no rotating vulnerable parts,The maintenance cost is much lower than that of traditional online detection equipment

• Standard communication interface,Quickly connect with existing PLC/SCADA without the need for complex electrical control modifications

4. High speed and high precision, closed-loop process control

• Single point 50ms high-speed acquisition,Real time output data, supporting automatic adjustment of process parametersReduce waste rate and improve yield rate

• Phase difference accuracy ± 1nm, alignment angle ± 0.1 °, meeting the dual control requirements of R&D and mass production levels

4、 Typical application areas

1. Universal packaging film: PET/PP/PE/nylon stretch film, shrink film, cling film,Online monitoring of indicators related to tensile orientation uniformity, thermal shrinkage performance, and tear strength

2. Optical functional films: low/medium phase difference optical films, compensation films, polarizer base films,Full amplitude phase difference/alignment angle control, wavelength dispersion evaluation

3. Adhesive tape/industrial film: adhesive tape base film, protective film, release film,Online IQC, process stability monitoring, real-time removal of defective products

4. Production line process optimization: stretching machine/coating machine/slitting machineOptimization of tension, temperature, and stretching ratio parameters, establishment of process optical performance correlation model

5、 Model differentiation (WI vs WI/SPC)

Welcome industry customers and partners to inquire and negotiate cooperation:

Yuqi Scientific Instruments (Shenzhen) Co., Ltd

Special Manager: ¹⁵⁸¹⁵⁵⁵⁰⁹⁹⁸ (Lin)

Address: Yuqi Science, 7th Floor, E-commerce Group, No. 906 Longhua Street, Longhua New District, Shenzhen, Guangdong Province

#Oji Keisoku OSI Prince Measurement China Agent Tamazaki Scientific Instruments (Shenzhen) Co., Ltd