Here are the latest updates on the hot melt adhesive industry:

1. Avery Dennison Applies for Hot Melt Adhesive Patent: Avery Dennison Corporation has applied for a patent titled "Hot Melt Adhesive" (Publication Number: CN120530174A) with the China National Intellectual Property Administration. The patent discloses compositions, particularly pressure-sensitive adhesive (PSA) compositions, such as hot melt pressure-sensitive adhesives (HMPSAs), and laminated materials using these compositions. The HMPSA compositions include components like polyol esters, styrene-isoprene-styrene (SIS) block copolymers, binders, photoinitiators, and naphthenic oil, or combinations of SIS, polybutene polymers, photoinitiators, and tackifiers1.

2. Tongda Chuangzhi's Utility Model Patent: Tongda Chuangzhi (Xiamen) Co., Ltd. obtained a utility model patent for an "Eight-Spiral Mixing Hot Runner Structure" (Patent Number: CN202422445814.8) on August 15, 2025. This structure is designed for injection molds and aims to improve the mixing and flow of hot melt adhesive during the injection process. It features spiral flow channels that enhance mixing, ensure uniform temperature, reduce cold material issues, improve fusion, and address weld line problems, resulting in smoother product surfaces2.

3. Lair Technology's Performance and Expansion: Lair Technology reported a 13.51% year-on-year increase in net profit for the first half of 2025, with revenues reaching RMB 384 million. The company is raising funds via a private placement to support projects including a high-performance functional adhesive film project and a new energy battery current collector material project. Their high-performance hot melt adhesive films are widely used in 3C electronics, automotive electronics, servers, new energy batteries, and more. The company is expanding production capacity to meet growing demand, particularly from new energy vehicles and AI-driven markets like servers and electronic devices5.

4. PUR Hot Melt Adhesive Technology Forum: A forum and training session on polyurethane (PU) and polyurethane reactive (PUR) hot melt adhesive technology is scheduled for September 28–30, 2025, in Hangzhou. PUR hot melt adhesives have seen rapid growth in China due to their strong bonding properties, adaptability to various materials, and applications in electronics, aerospace, new energy, automotive, and other industries. The event aims to promote innovation in PU and PUR adhesive technologies4.

5. High-Performance Hot Melt Adhesive Film Project in Foshan: Lair Technology is investing RMB 76.73 million in a high-performance hot melt adhesive film project in Shunde District, Foshan. The project will have an annual production capacity of 28.8 million square meters and is expected to be completed within 18 months. These adhesive films are used in consumer electronics, home appliances, servers, new energy vehicles, power and storage batteries, and LED lighting. The project aligns with national policies encouraging high-performance, environmentally friendly materials3.

6. List of Polyester Hot Melt Adhesive Companies: Among listed companies, Tianyang New Materials and Kangda New Materials are key players in the polyester hot melt adhesive market8.

7. Environmental Approval for Functional Materials Project: Jiangsu Huanghe New Material Technology Co., Ltd. has received environmental approval for a new project producing functional composite materials for semiconductors, high-performance adhesive materials for electronics, and high-performance hot melt composite adhesive films7.

These developments highlight ongoing innovation, expansion, and policy support in the hot melt adhesive industry, particularly in high-performance, environmentally friendly applications and emerging sectors like new energy vehicles and electronics.