サニー・シーリング List of Products and Services

The attachment system created by combining Mitsui Mining & Smelting Co., Ltd.'s electronic component mounting and peeling technology with our high-precision film and tape composite processing technology has achieved the automation of processes that have traditionally been manual. We support the automation and cost reduction of your attachment work.

• Other electronic parts

Sunny Sealing Co., Ltd. is a manufacturer of industrial labels and seal printing, and also engages in precision processing of tapes and films in addition to various printed products. By applying the precision processing technology cultivated through printing technology and the processing of liquid crystal and optical materials, we provide various items for the medical field, including for medical device manufacturers and pathology testing institutions. We support everyone in the medical and research fields with a robust quality assurance system. 【Features】 ■ Consistent production in a clean room with a class of 100 to 10,000 for all processes ■ High quality ■ High precision *For more details, please contact us or download the catalog.

• Other analytical and testing equipment
• Other contract manufacturing
• Label printing

The "Re-adhesive Label (for cardboard)" is a label that can be issued and affixed to cardboard boxes, and can be reattached to the work instruction sheet after use. Labels using general adhesives can damage the surface they are applied to, but removal labels can be reapplied with only minor dust adhering to the surface, preventing transcription errors of information. The special coating on the surface also ensures good print quality for barcodes and other information. There are both paper-based and film-based adhesive options available. [Features] ■ Reattachable ■ For the reuse of cardboard boxes ■ Compatible with printers *For more details, please contact us or download the catalog.

• Label printing

The removable label "Repositionable Label (for Plastic Corrugated Board)" is a label that adheres firmly and can be removed cleanly. You can issue the label, attach it to the product, and after use, it can be reattached to the work instruction sheet, preventing transcription errors. Labels using general adhesives tend to curl when removed, but this product hardly curls and can be easily peeled off. 【Features】 ■ Reattachable ■ For the reuse of containers, trays, etc. ■ Printer compatible ■ No adhesive residue after removal *For more details, please contact us or download the catalog.

• Label printing

The "UL・CUL Label" is a label related to guidance, explanation, and identification that has obtained certification under UL969, a product safety standard established by Underwriters Laboratories (UL) in the United States. UL-certified products are distinguished by the label substrate, adherent, usage conditions, printing conditions, surface treatment, and printing conditions. When shipping UL-certified products, an identification label (UL marking) is affixed to each product package. The identification label clearly states the UL mark, our company logo, and the catalog number. The label serves as proof of using certified products when UL inspections are conducted later, so it is recommended to keep it for a while after unpacking the product packaging. 【Features】 ■ UL-certified products ■ Safe *For more details, please refer to the catalog or feel free to contact us.

• Label printing

The "Solvent Resistance Improvement Label" is a functional label that enhances solvent resistance through a unique processing method. Previous labels lacked xylene resistance in the surface printing and adhesive, leading to issues such as "fading print" and "label peeling," which resulted in handwritten displays. This created an environment where barcode management was not possible and transcription errors were likely to occur. Our product shows no abnormalities in print readability even after being submerged in 100% xylene for 72 hours, and there is no label peeling. Therefore, it paves the way for barcode management and the prevention of human errors. 【Features】 ■ Xylene resistant ■ No abnormalities in print readability ■ No label peeling *For more details, please contact us or download the catalog.

• Label printing

Using Thomson-type, pinnacle die, mold, and seal blade types, we perform processing and inspection according to materials and precision within our clean room at our factory. We can handle a wide range of materials, including standard PET films, double-sided tapes, anti-splash films, optical OCA tapes, metal foils, and battery materials.

• LED Module
• Other Auto Parts
• others

In "high-precision slitting processing," precise slitting can be performed on a variety of materials, including film-based materials such as PET and polyimide, non-ferrous metals like copper, aluminum, nickel, titanium, and amorphous alloys, as well as composite materials made from these substances (including adhesive products). Precision slitting without burrs or fraying is also possible for positive and negative electrode materials, separators, terminals, and lead wires used in secondary batteries and capacitors. 【Features】 ○ Minimum slit width: 0.25mm ○ Sharp slit cutting surface ○ High-quality long-length winding For more details, please contact us or download the catalog.

• Processing Contract

In the world of electronic devices, the miniaturization, precision, and high functionality of parts are progressing at an accelerating pace. To achieve these "high integration technologies," it is essential to ensure the "cleanliness" of each part. No matter how advanced the technology is, if there is dust in the manufacturing process, products cannot be realized. Sunny Sealing Co., Ltd. conducts strict cleanliness management not only for the cleanliness within the process but also for the materials brought into the clean room, ensuring that manufacturing takes place in a dust-free environment. [Product Usage Examples] - LCD fixing tape - Diffusion sheets - Reflective sheets For more details, please contact us or download the catalog.

• Processing Contract

At Sunny Sealing, we adhere optical materials printed with fine patterns with high precision (±30μm) according to the patterns. The manufacturing environment is Class 100, ensuring clean processing without foreign substances or bubbles. We can also accept printed materials from our company or materials provided by customers that have already been patterned (etching, gravure offset printing, etc.). We have experience in pattern adhesion and cutting for metal mesh used in touch sensors (processing size: 7 to 14 inches), so please feel free to consult with us. 【Examples of Processing】 (1) Printing lines with a width of 0.1mm in different colors A and B - Sheet A: Blue lines - Sheet B: White lines - Adhesive: OCA; adhesive application is also possible (2) Aligning and adhering the printed patterns of A and B (3) Cutting the outer shape (printing pattern reference is also possible) * Depending on the size, printing and adhesion in a multi-panel state within one sheet is also possible. For more details, please contact us or download the catalog.

• Processing Contract

In "Precision Screen Printing," special inks and adhesives are precisely printed and reproduced on functional films. Particularly, the accuracy of overprinting is excellent, maintaining a precision of ±0.05mm even in multi-color, multi-layer printing, which was previously difficult to align. Additionally, by controlling the film thickness, it is also possible to regulate the adhesive strength in adhesive printing. The ability to print ultra-fine patterns and reproduce densely packed patterns with high resolution allows for applications in areas that leverage the unique characteristics of printing, such as decorative parts requiring precision, light shielding, reflection, and adhesive coating on irregular shapes in optical systems. **Features** - Printing in a Class 1000 clean room suitable for electronic components and optical materials - Balancing high quality with stable production - Setting individual quality standards based on product usage conditions, materials, and required quality, ensuring high quality and stable production through strict management - Fusion of skilled techniques and new printing technologies - Compared to conventional screen printing, there is no roughness in the contours of letters, allowing for sharp expression even in fine text and designs For more details, please contact us or download the catalog.

• Printing/Publishing

At Sunny Sealing Co., Ltd., in addition to traditional double-sided tape and functional film processing (die-cutting and laminated composite processing), we are currently advancing the development of bonding technology. We address challenges such as bubbles, warping, foreign matter entrapment, and misalignment—issues that are difficult to resolve with just equipment and technology—through integrated production of "processing + bonding" and total technology. [Examples of Bonding] - Glass + Shatterproof Film - Glass + Decorative Film For more details, please contact us or download the catalog.

• Processing Contract

At Sunny Sealing Co., Ltd., we are advancing the development of products that integrate adhesive technology and printing technology to die-cut functional materials for sheet supply and finish them into rolls, in addition to traditional double-sided tape and film processing (die-cutting and laminated composite processing). There is no need to separate suppliers for printing processing and film processing, allowing for a consistent production process of "adhesion + printing + processing," which contributes to stable product supply and yield improvement for our users. 【Adhesive Technology Features】 ○ Work Size: 150mm x 100mm (MAX) ○ Adhesion Accuracy: ±0.5mm ○ Adhesion Environment: Clean Room Class 1000 For more details, please contact us or download the catalog.

• Processing Contract

In the world of electronic devices, the miniaturization, precision, and high functionality of parts are progressing at an accelerating pace. To realize these "high integration technologies," it is essential to ensure the "cleanliness" of each part. No matter how advanced the technology is, if there is dust in the manufacturing process, products cannot be made. Sunny Sealing Co., Ltd. not only manages the cleanliness within the process but also implements strict cleanliness control for the materials brought into the clean room, ensuring a dust-free environment for manufacturing. [Product Usage Examples] - LCD fixing tape - Diffusion sheet - FPC fixing tape For more details, please contact us or download the catalog.

• Processing Contract

In pathological examinations, cells adhered to a slide glass are diagnosed under a microscope. The cells on the slide glass are embedded in paraffin, and xylene is used during the embedding process and for cell staining. Previous labels lacked xylene resistance in their surface printing and adhesives, leading to issues such as "fading prints" and "peeling labels," which resulted in handwritten labeling. Consequently, this created an environment where barcode management was not possible and transcription errors were likely to occur. Sunny Sealing Co., Ltd. has developed labels with improved solvent resistance through unique processing. Solvent-resistant labels pave the way for barcode management and prevention of human errors. 【Features】 ○ Xylene resistance for 72 hours or more ○ No abnormalities in print readability ○ No label peeling For more details, please contact us or download the catalog.

• label

The caution labels of Sunny Ceiling help to avoid risks in various situations. The manufacturer's responsibility for accidents is a significant issue that cannot be overlooked. The most suitable way to accurately communicate the various risks of a product to users and prevent accidents before they happen is through labels. Although it should never happen, in the event that an accident does occur, these labels will protect your company. 【Features】 ○ A key player in promoting safety ○ Materials that can withstand any environment For more details, please contact us or download the catalog.

• label

UL standards refer to safety standards issued by Underwriters Laboratories Inc. In the United States, UL standards are socially trusted as the highest authority on safety standards, and UL is recognized in safety regulations at the state and municipal levels. Consumers have made it a habit to use the UL mark as a benchmark for safety, guiding their product selection. In Japan, for example, a ruler with a JIS mark is intuitively understood to have high precision. Similarly, there is a recognition that "UL mark = high safety." CUL certification is a certification standard for Canada, where UL conducts tests based on CSA standards and issues certifications under an agreement with CSA. 【UL Standards】 ○ Recognition Mark → A mark indicating that UL has evaluated and certified components/materials used in UL-certified products. ○ Listing Mark → A mark indicating that UL has tested samples of the product and determined that they meet the requirements specified in the safety standards issued by UL. For more details, please contact us or download the catalog.

• label

Removable Labels "Repositionable Labels" (Pradan) can be issued and affixed to products, and after use, they can be reapplied to the work instructions, preventing transcription errors. Labels using general adhesives tend to curl when removed, but removable labels can be removed easily with minimal curling. 【Features】 ○ Reapplication possible ○ Suitable for the reuse of containers, trays, etc. ○ Printer compatible For more details, please contact us or download the catalog.

• label

Removable Label "Repositionable Label" (for cardboard) allows you to issue a label and attach it to a product, and after use, it can be reattached to the work instruction sheet, preventing transcription errors. Labels using general adhesives can damage the surface they are attached to. In contrast, removable labels can be reapplied with only a small amount of dust adhering to the surface. [Features] ○ Reattachable ○ For the reuse of cardboard boxes ○ Compatible with printers For more details, please contact us or download the catalog.

• label

Heat-resistant labels and heat-resistant seals are made using substrates and special adhesives that have excellent heat resistance and solvent resistance. They are used in production management and logistics management barcode labels, as well as for display and masking purposes, in harsh environments where heat and solvent resistance are particularly required, such as semiconductor processes and printed circuit board manufacturing processes. 【Features】 ○ Heat-resistant labels that can withstand harsh environments ○ Combination of surface substrate and special adhesive For more details, please contact us or download the catalog.

• label

Dust-free tack labels "Clean Labels" can be used in clean rooms. Preventing foreign matter contamination in products is the top priority for the semiconductor industry. We earnestly tackle micron-level dust and particles that are often overlooked in daily life. We also offer paper-based clean labels. Our clean labels and clean seals include low-dust films, and you can choose adhesive strength (strong, removable, reattachable) according to your needs. 【Features】 ○ No dust or particles ○ Clean materials For more details, please contact us or download the catalog.

• label

The "Retouch Sheet PR," conceived from resource recycling, allows for the reuse of cardboard and plastic sheets, and can also be cleaned, eliminating concerns about label residue contamination. You can order in your desired sheet size, and printing on the sheets is also possible. 【Features】 ○ Adhesive tape and labels can be cleanly removed ○ Labels are easy to apply and remove ○ Unique surface treatment For more details, please contact us or download the catalog.

• label
• Other markings

With the increase in exports overseas, damages from counterfeiting and tampering are on the rise. The impact is not only a decrease in sales but also significant damage to companies in terms of credibility, as it leads to a decline in brand image among consumers. As an effective means of brand protection, we offer proposals for anti-counterfeiting and tampering labels tailored to our customers' needs. [Label Variations] - Quality type - Partial transfer type - Non-partial transfer type - Perforated type For more details, please contact us or download the catalog.

• label

"Micro text" with a character height of 0.2mm, which is extremely difficult to reproduce in standard label printing, appears to the naked eye as tiny dots or thin lines at a glance. Even when copied with a photocopier, it becomes black and indistinguishable. It is ideal for security applications such as preventing the counterfeiting of specific components. 【Features】 ○ Ideal for anti-counterfeiting and security ○ Even when enlarged and copied, the text cannot be clearly displayed For more details, please contact us or download the catalog.

• label