Our Technology ｜ Sumika-kakoushi Co.Ltd.

Our Technology

Your partner for adhesive products supported by technology and quality

Our release liner sumilease can meet various performance requirements from customers.
A wide selection of paper substrates is available, including Wood-free paper (base paper for release liner), kraft paper, kurupak paper, crepe paper, and glassine paper. (Please inquire about recycled paper, various types of coated paper, composite substrates, etc.).
We can also respond to various requests for release agents by combining them according to the application, from light release to heavy release. In addition to silicone release agents, non-silicone release agents are also available.

Iwaki Factory

Product & Technology Development

We design release paper that meets performance and quality requirements, and propose solutions with short lead times.
Centering on Iwaki Factory—our sumilease production hub—we staff a Technology Department on site and a Development & Marketing Group in the Business Division, linking Sales and Manufacturing in a unified structure for new product and technology development.

Sales, Development, and Manufacturing work together to respond to customer needs and accelerate development.
We respond swiftly to changing customer needs.
We pursue new product and technology development.

Quality Control & Quality Assurance

Using diverse testing and analytical instruments, we monitor product characteristics and work to maintain and improve quality.
Under an ISO 9001 system, we carry out quality assurance activities to ensure stable supply.

Thorough Measures Against Insects and Foreign Matter

Air showers and tacky mats at entrances
insect‑control equipment
monthly inspections, meetings, and training by an external environmental management company
positive‑pressure control
net‑curtain enclosures for production lines
and LED lighting

Analytical & Measuring Instruments

Film Thickness Gauge
— thickness of release liner measurement
Tensile Tester
— tensile strength and elongation measurement
Tear Tester
— tear strength measurement
Peel Tester
— low‑ and high‑speed peel load measurement
Gloss Meter
— surface gloss measurement
Scanning Electron Microscope /
Energy‑Dispersive X‑ray Spectrometer
(SEM/EDS)
— surface observation and foreign‑matter analysis
Differential Scanning Calorimeter (DSC)
— thermal history analysis
Digital Microscope
— surface observation
Fourier Transform Infrared Spectrophotometer [FT-IR]
Foreign material analysis
Wavelength Dispersive X-ray Fluorescence Analyzer [WDXRF]
Release agent dry coating weight measurement
Moisture Meter
Moisture content measurement

Facilities owned by Iwaki Factory

Overview of Iwaki Factory facilities and exterior.

Category	Line number	Specification of machine	width	basis weight	PE layer (single‑side)	Release agent applied thickness (Dry)(μm)	Remarks
Production machines	— 4 units	PE laminator (single‑side)×1	800–1600mm	50–150gsm	15–35μm	ー	turret continuous production; defect detection (both sides ×2 types); PE thickness control; static eliminator.
Production machines	— 4 units	PE laminator (single/double‑side) + release‑agent coater (single/double‑side)×3	800–1600mm		15–35μm	0.4–1.2mm.
Finishing machines	— 6 units	Slitters×6	(finished width 500–1600mm)		ー	ー	defect‑data linkage with production machines; multiple‑up layout on request; static eliminators.