YKK List of Products and Services

PROSEAL® is a waterproof and airtight fastener that has received high praise in a wide range of fields, including airlocks that require airtightness. It is used in protective clothing such as space suits, chemical protective suits, diving suits, and survival suits, as well as in liquid transport tanks. 【Features】 ■ Highly regarded in a wide range of fields ■ Used in protective clothing such as space suits, chemical protective suits, diving suits, and survival suits, as well as in liquid transport tanks 【Ideal for customers who】 ■ Want a waterproof and airtight fastener that matches highly waterproof fabrics ■ Require waterproof and airtight applications but want easy opening and closing *For more details, please download the catalog or feel free to contact us. *PROSEAL is a registered trademark of YKK Corporation.

The "Electromagnetic Wave Shielding Fastener" is a fastener that effectively shields electromagnetic waves using a tape made of stainless steel fibers with electrical conductivity. This fastener demonstrates an effectiveness of 35-40 dB (approximately 95% shielding rate) against ultra-short waves (around 1 GHz) such as television broadcasts and mobile phones, preventing malfunctions in precision equipment and reducing impacts on the human body. 【Features】 - Electromagnetic wave shielding effect: Achieves excellent electromagnetic wave shielding using stainless steel fibers with electrical conductivity. - Wide range of applications: Exhibits an effectiveness of 35-40 dB against ultra-short waves such as television broadcasts and mobile phones. - Enhanced safety: Prevents malfunctions in precision equipment and reduces impacts on the human body. 【Suitable for customers like these】 ■ Those who want to use a fastener for the opening and closing of tents with electromagnetic wave shielding properties. *For more details, please feel free to contact us.

AQUASEAL(R) is a zipper with high waterproof properties. It is used in applications where waterproofing is required, such as wetsuits, waterproof bags, and cooler bags. It is soft and can also be sewn, making it suitable for use in clothing and bags. For applications that require higher airtightness, we also offer a separate product, PROSEAL(R). 【Reasons to Choose This Product】 ■ Used in applications where waterproofing is required ■ For applications that require higher airtightness, PROSEAL(R) is recommended *Documents introducing case studies by application can be viewed via the "PDF Download" link below. *AQUASEAL is a registered trademark of YKK Corporation.

Flame-retardant fasteners are products that use highly flame-retardant fibers in the tape portion of the fastener. The aramid fibers used in the fastener tape possess fiber performance (tensile strength, elasticity, specific gravity) comparable to that of polyester. Additionally, these fibers have heat resistance that allows them to decompose and begin carbonization only at 400°C without melting in the air, along with flame retardancy and flame resistance with a Limiting Oxygen Index (LOI) of over 29. 【Features】 ■ Uses highly flame-retardant fibers in the tape portion of the fastener ■ Aramid fibers maintain fiber performance comparable to polyester ■ Do not melt in the air ■ Heat resistance that begins decomposition and carbonization only at 400°C ■ Flame retardancy and flame resistance with a Limiting Oxygen Index (LOI) of over 29 *Please feel free to contact us for more details.

Heat-resistant zippers are products that use stainless steel thread in the tape part of the zipper. They possess flexibility comparable to organic fibers and can be cut with scissors and sewn with sewing thread. They have heat resistance of over 1000 degrees. 【Features】 ■ Uses stainless steel thread in the tape part of the zipper ■ Possesses flexibility comparable to organic fibers ■ Can be cut with scissors and sewn with sewing thread ■ Has heat resistance of over 1000 degrees *Please feel free to contact us for more details.

Weather-resistant fasteners are products that use highly weather-resistant materials for the tape, elements, finishing parts, and sliders of the fasteners. They maintain a certain level of strength even under ultraviolet exposure conditions. They are characterized by minimal fading of the tape, and specifications with a net adapter are also available. 【Features】 ■ Uses highly weather-resistant materials for the tape, elements, finishing parts, and sliders of the fasteners ■ Maintains a certain level of strength even under ultraviolet exposure conditions ■ Minimal fading of the tape ■ Specifications with a net adapter are also available *For more details, please feel free to contact us.

AquaGuard® is a zipper that achieves excellent water resistance by laminating a polyurethane film on the surface of the zipper tape. It comes in two types: coil type and injection-molded type, making it ideal for outdoor gear. 【Features】 - Water Resistance: High water resistance due to the polyurethane film. (This zipper is not completely waterproof.) - Design: The gloss of the polyurethane film on the back of the zipper enhances the design of clothing and bags. - Types: Available in two types: coil type and injection-molded type. 【Usage Scenarios】 - Outdoor gear - Sportswear - Casual wear - Bags For more details, please download the catalog or feel free to contact us. AquaGuard® is a registered trademark of YKK Corporation.

◆Background of Adoption for Construction Protective Net Use ~The Burden of "Removing the Net" Work in Preparation for Strong Winds~ In construction sites, protective sheets known as "yousei sheets" are used to prevent paint splatter and other issues. When strong winds are expected, such as during typhoons, these sheets can catch the wind and potentially lead to scaffold collapse. As a result, the sheets must be removed in advance whenever strong winds are predicted, creating a significant burden. ◆Key Points for Problem Solving (How Fastening Helped) With the ability to open and close ventilation openings using fasteners, it has become easy to create "holes" in the protective sheets to allow the wind to escape simply by opening the fasteners. Consequently, the previous requirement to remove all protective sheets has been reduced to only a portion, successfully alleviating the burden of removal and leading to a reduction in labor costs. *For more details on the product, please refer to the catalog available for download below.*

This is a case study of our fasteners used in bird damage prevention nets. ◆ Background of Adoption for Bird Damage Nets ~ The issue of "curling" of the net ~ The "bird damage (crow prevention) net" installed as a measure against bird damage at garbage collection sites has a problem where simply covering it leads to the net curling, limiting its effectiveness. ◆ Key Points for Solving the Issue (How Fastening Helped) By attaching our fasteners, we created a bag-shaped net that allows for opening and closing during use. The bag shape improved the sealing capability, resulting in a reduction in bird damage compared to before implementation. * For product details, please refer to the catalog available for download below. * Photo provided by Kawakami Fishing Nets.

Our VISLON® zippers for fishing nets are available in types No.10 to No.30. For No.30, which can be used when the zipper element comes off, we also provide repair elements. ◆ Background for Adoption in Fixed Net Applications Fixed nets are a fishing method where nets are set up in areas where fish migrate for a certain period to catch the guided fish. The fixed nets used for salmon and trout fishing are installed about 4 to 5 km upstream from the river mouth, extending 1 km in length and 20 to 50 m in width, and these nets are also equipped with zippers. ◆ Key Points for Problem Solving (How Fastening Helped) Traditionally, the ends of fishing nets were all secured with ropes, requiring the ropes to be removed and tied again during the catch, which posed a challenge for efficient harvesting methods. By instead installing VISLON® zippers for fishing nets, approximately 10 to 20 m in length, we were able to improve work efficiency and enhance the safety of the workers. *For product details, please refer to the catalog available for download below as "PDF Download." *VISLON is a registered trademark of YKK Corporation.

◆Background of Adoption for Aquaculture Nets For aquaculture nets, it is necessary to regularly remove accumulated leftover feed to prevent sharks from approaching. Each net requires divers to dive down, open the bottom of the net, surface, and then dive again, which has become a significant burden for the divers. ◆Key Points of Problem Solving (How Fastening Helped) The VISLON(R) fastener for fishing nets facilitates the opening and closing of the bottom of the net, reducing the workload and eliminating the need for workers to surface for each net. This has resulted in a reduction in both time and workload. *For product details, please refer to the catalog available for download below.*

Our VISLON® zippers for fishing nets are available in types No.10 to No.30. The lateral pull strength of VISLON® No.30 is more than twice that of No.15. We also provide repair elements that can be used when the zipper elements of No.30 come off. ◆ Background for Adoption in Large Aquaculture Nets In the case of large aquaculture cages, the diameter can be around 50 meters, but the transportation and installation at the site have been challenging. ◆ Key Points for Solving Issues (How Fastening Helped) By combining zippers with aquaculture nets, we achieved a specification that allows for the division of large nets. This enables the divided nets to be transported and connected on-site, significantly reducing the workload. * For product details, please refer to the catalog available for download below. * VISLON is a registered trademark of YKK Corporation.

Our AQUASEAL(R) zippers are widely used in applications that require waterproofing, such as wetsuits, waterproof bags, and cooler bags. ◆ Background of Adoption in Care Bathtubs Bathing for individuals requiring care presents challenges with standard bathtubs, such as the need to "lift and transport them to the bathtub" and the inability for those with paralysis to bathe. Additionally, there are risks associated with assisting individuals in and out of the bathtub. While there have been specialized devices that allow bathing while remaining in a wheelchair, their high cost has made them inaccessible for many facilities. Therefore, there has been a demand for solutions that can be installed and operated more easily. ◆ Key Points in Problem Solving (How the fastening products were helpful) By installing the waterproof AQUASEAL(R) zippers on all four sides of the care bathtub, we achieved a foldable design. This allows for easy setup and storage by simply opening and closing each part with a zipper, enabling one person to perform the task and successfully simplifying existing equipment. *For product details, please refer to the catalog available for download below. *AQUASEAL is a registered trademark of YKK Corporation.

Our AQUASEAL(R) zipper is a product that is widely used in applications requiring waterproofing, such as wetsuits, waterproof bags, and cooler bags. ◆ Background of Adoption in Waterproof Bags Conventional bags have the issue of water entering through the zipper, which poses a problem when fishing in rainy weather or at the sea or river, causing valuables and electronic devices to get wet. ◆ Key Points for Solving the Problem (How the Zipper Helped) By installing YKK's AQUASEAL(R) zipper on the bag, water intrusion into the bag is eliminated, protecting valuables and electronic devices, allowing for worry-free enjoyment during outings in rainy weather or leisure activities. * For product details, please refer to the catalog available for download below as "PDF Download." * AQUASEAL is a registered trademark of YKK Corporation.

AQUASEAL® zippers are widely used in applications requiring waterproofing and airtightness, such as dry suits, waterproof bags, and cooler bags. ■ Background of Adoption in Fumigation Bags Carbon dioxide, used for pest control of ancient documents and spider mites in agricultural products such as strawberries, raises concerns among users about gas leakage from the bags during pest control. The labor involved in sealing the bags has been a challenge. ■ Key Points for Problem Solving By attaching AQUASEAL® zippers to the openings of fumigation bags, the following effects were achieved: - High airtightness: Effectively seals carbon dioxide inside the bag, preventing leakage. - Improved work efficiency: Enhances the usability when covering ancient documents with fumigation bags, significantly reducing labor. AQUASEAL® zippers are a reliable solution for waterproofing and airtightness. For detailed technical specifications and usage examples, please contact our sales representatives.

■Background for the Adoption of Underwater Construction Sheets The decrease in the number of divers for underwater construction and the challenges posed by site conditions (such as underwater visibility, current speed, and water temperature) have led to delays, increased costs, and reduced safety. Additionally, the removal of debris generated after the removal of materials used underwater, as well as the costs associated with repairs and maintenance for reuse, are also problematic. ■Key Points for Problem Solving Instead of the traditional assembly method using liner plates for temporary closures by divers, the new method employs waterproof sheets utilizing YKK's waterproof fastener AQUASEAL(R). These sheets allow for segmented construction, significantly reducing the underwater work performed by divers. This results in a reduction of underwater construction processes, improved economic efficiency through the reuse of plates, and a decreased risk of decompression sickness, enabling a reduction of approximately 20% in construction costs and timelines. (Note 1: Liner Plate: A construction material made of thin steel plates with wave processing and connecting flanges on all four sides. Multiple plates are combined and used in a cylindrical shape. Note 2: Estimated by Azai Technology Consultant Co., Ltd.)

◆Background for Adoption of Medical Protective Clothing Due to the impact of the novel coronavirus, visits to hospitalized patients have been restricted. To provide peace of mind and safety to healthcare workers and their families through a "personal space" with low infection risk, improvements were sought in the following areas: * Enhanced comfort through air control within the suit * Establishing a system based on hard and soft components for reuse * Functionality that allows for easy attachment and detachment for visitation ◆Key Points for Problem Solving (How Fastening Contributed) AQUASEAL(R) zippers were adopted for the openings of the medical protective clothing. AQUASEAL(R) zippers are waterproof zippers. They offer greater flexibility and operability compared to PROSEAL(R) zippers, which are metal zippers with airtight properties, making them easier to open and close without being too heavy. *For product details, please refer to the catalog available for download below.* *AQUASEAL is a registered trademark of YKK Corporation.* *PROSEAL is a registered trademark of YKK Corporation.*

Our AQUASEAL® zippers are widely used in applications requiring waterproofing, such as wetsuits, waterproof bags, and cooler bags. ◆ Background of Adoption in Tunnel Exhaust Ducts Exhaust ducts used in tunnel construction are extended by connecting them with zippers every 10 meters. However, due to frequent "air leaks" from the zippers, large fans or intermediate fans may be necessary. When the duct is long or the cross-sectional area of the tunnel is small, it becomes difficult to install intermediate fans. ◆ Key to Solving the Problem (How Fastening Helped) By adopting AQUASEAL® zippers at the connection points of the ducts, we successfully reduced air leakage to one-hundredth compared to conventional products. This led to the omission of intermediate fans and a reduction in electrical energy consumption. *For product details, please refer to the catalog available for download below. *AQUASEAL is a registered trademark of YKK Corporation.

Our AQUASEAL(R) fasteners are widely used in applications requiring waterproofing, such as wetsuits, waterproof bags, and cooler bags. ◆ Background of Adoption in Soundproof Curtains at Construction Sites When connecting soundproof panels (in sheet form), sound leakage from the gaps between the panels has been a challenge, and methods to enhance airtightness have been sought. ◆ Key Points for Solving the Issue (How Fastening Helped) By connecting the soundproof panels with AQUASEAL(R) fasteners, sound leakage from the gaps was reduced, and the installation work of the soundproof curtains was simplified. * For product details, please refer to the catalog available for download below. * AQUASEAL is a registered trademark of YKK Corporation.