Hot Melt Adhesive for Case and Carton Sealing – Durable Packaging Solution
Using hot melt glue as the bonding and sealing material for sealing cardboard boxes is a packaging method. It ensures a strong bond, preventing the boxes from splitting during transportation and storage. The quick setting time enhances packaging efficiency, making it suitable for large-scale automated packaging production lines. The main types are EVA hot melt adhesive, polyolefin glue, and TPE glue.
Advantages:
Low Viscosity: Excellent fluidity, glue-saving, and suitable for automated lines. The glue can quickly pass through nozzles to form even glue strips without clogging equipment; it uses less glue than high-viscosity alternatives while achieving the same bonding effect. This not only reduces costs but also prevents excessive glue overflow from contaminating cartons.
Fast Curing Speed: Improves carton sealing efficiency and adapts to mass production. After application, the hot melt glue achieves initial fixation in seconds, avoiding carton displacement or peeling caused by slow curing.
Good Initial Adhesion: Instant fixation with minimal auxiliary operations. It generates adhesion immediately after application, preventing carton seam detachment due to poor initial stickiness.
Excellent Penetration: Enhances bonding stability and adapts to different paper types. In the molten state, the glue quickly penetrates into the gaps of paper fibers, forming a firm bond between the surface and the paper core. This reduces carton seam cracking during transportation caused by jolting.
Good Thread-Breaking Performance: Optimizes operational experience and avoids packaging contamination. When the glue gun pauses or switches cartons, the EVA hot melt glue rarely leaves residual threads. No excess glue threads wrap around equipment or adhere to carton surfaces, preventing product contamination or appearance damage.
High Cohesive Strength: Ensures transportation durability, impact resistance, and aging resistance. The cured glue layer has high inherent strength, resisting failure from external stretching or environmental changes. During carton stacking or long-distance transportation, the sealed seams can withstand pressure and impact from jolting, avoiding glue layer rupture and peeling.
High Hardness: Enhances glue layer support, resisting deformation and cracking. The cured glue layer is harder than EVA and other types of hot melt glue, preventing deformation under pressure. When cartons are stacked, the glue layer at sealed seams can withstand the weight of upper cartons, avoiding seam deformation and opening; it resists damage from collisions and friction during long-distance transportation.
Good High-Temperature Resistance: Adapts to extreme storage environments for long-term stability. It can withstand high temperatures, and the glue layer will not soften or flow when exposed to prolonged high-temperature conditions. When cartons are stored in high-temperature warehouses or transported outdoors in summer, the sealed seams remain firmly bonded, preventing peeling due to high-temperature aging—especially suitable for customers in high-temperature regions.
Good Low-Temperature Resistance: Breaks low-temperature limitations for reliable winter use. It maintains good molten fluidity and bonding activity in low-temperature environments. During sealing in low-temperature regions, the glue bonds quickly after application, and the cured glue layer does not become brittle; the bonding strength remains unchanged when cartons are stored in low-temperature warehouses or transported in winter.
Strong Anti-Adhesion Performance: No caking at high temperatures, ensuring convenient use. The base material of the hot melt glue results in extremely low surface viscosity at room temperature. Particles do not adhere to each other due to viscosity overflow, maintaining a loose state. After unpacking, the glue can be directly fed into glue machines without prior crushing or sorting, saving operational time.
Good Material-Breaking Effect: Achieves "paper layer breaks before glue layer" for more stable bonding. The bonding strength exceeds the tensile strength of paper fibers in ordinary cartons, causing the carton paper layer to tear (instead of glue layer detachment) during peeling. Violent tearing is required to open sealed cartons, and sealed seams cannot be easily peeled off; even when subjected to severe jolting during transportation, the glue layer will not separate from the carton.
High Tensile Strength After Sealing: Resists stretching and impact, suitable for heavy-load scenarios. The cured glue layer has high tensile strength and can withstand stress from external stretching and impact. For cartons loaded with heavy products, the sealed seams can bear the tensile force caused by product weight without cracking due to heavy loads; during long-distance transportation (e.g., sudden braking, jolting), the glue layer absorbs impact force to maintain the integrity of the seal.
Working Temperature: 140-170℃
Viscosity(160℃): 900-2300
Softening point: 85-115℃
Colour: light yellow granule, white granule
25KG/BAG
| Company Name | Sichuan UNISN New Material Technology Co., Ltd. | Country/Region | China |
| Business Type | Retailer | Company Size | 100 |
| Established | April 19, 2012 | ||
| Address | No. 9, Xingyuan Road, Shaqu Subdistrict, Dayi County, Chengdu City, Sichuan | ||
| Main Products | EVA hot melt adhesives, Polyolefin hot melt adhesives, TPR hot melt adhesives, hot melt pressure sensitive adhesives, Water-based labeling adhesives, Casein labeling adhesives, Lubricants for chain plate conveyor. | ||
Sichuan UNISN New Material Technology Co., Ltd. serves as a professional supplier that seamlessly integrates research and development (R&D), production, and sales. Since 2003, the company has been wholeheartedly dedicated to researching and innovating eco-friendly products, such as hot melt adhesives, water-based adhesives, lubricants, and more. We not only provide customers with high-quality and reliable bonding solutions but also create value that surpasses expectations.
Our company boasts a workforce of over 100 employees, two self-built factories covering an area of 16,500 square meters, a 3,000 square-meter office space, and a 1,000 square-meter R&D center. Equipped with a variety of advanced production and experimental facilities, we ensure top-tier product quality and robust innovation capabilities.
Sichuan UNISN offers leading-edge banding adhesives, packaging adhesives, product assembly adhesives, those hot melt adhesives that are used in packaging, case and carton sealing, woodworking, edgebanding, and foam bonding.
We sincerely hope that the products we produce can more effectively "bond" with customers, industry peers, and suppliers, forging closer relationships and jointly attaining greater development.
Company Advantages
Extensive Experience: It enables us to have a profound understanding of various application environments, machinery conditions, and hot melt adhesive solutions of other brands. Therefore, we can offer suitable solutions and alternatives quickly, saving you time and money on product selection and making it easier for you to develop the business.Competitive Price: The performance of our products can be equal to that of major international brands at a lower cost. In fact, when we participated in bids for renowned corporate clients alongside industry leaders, the customer finally decided to choose a more cost-effective option with acceptable quality.Strong R&D Ability: Our R&D team has decades of experience in our business. This translates into our ability to develop a highly competitive solution with better performance and lower cost. For instance, we designed an innovative solution to help a distributor convince the end customer to replace the existing expensive one.Quality Assurance: We have obtained certifications such as ISO 9001:2015, ISO 45001:2018, and ISO 14001:2015, which guarantee the reliability and safety of our products.
Send Inquiry
