1. Material Selection
Core Material: High-Density Polyethylene Vinyl Acetate (HD-PEVA)
The foundation of our heavy-duty mortuary bags is HD-PEVA, a robust variant of Polyethylene Vinyl Acetate known for its exceptional durability, flexibility, and waterproof qualities. HD-PEVA offers superior resistance to tearing, punctures, and chemicals, making it ideal for applications requiring the highest standards of leak-proof protection.
2. Layering and Lamination
Multi-Layer Construction
To achieve the desired level of waterproofness and leak-proofness, we employ a multi-layer lamination process. This involves bonding multiple layers of HD-PEVA together using advanced adhesive technologies. The innermost layer is typically a specialized leak-proof barrier, ensuring no moisture or fluids can penetrate the bag.
Reinforcement Layers
Additional reinforcement layers are added to critical areas such as the bottom, sides, and zipper seams to further enhance durability and prevent punctures or tears. These reinforcement layers may include woven polyester or nylon for added strength.
3. Zipper Integration
Waterproof Zipper Selection
Selecting the right zipper is crucial for maintaining the bag's waterproof integrity. We utilize high-quality, rust-resistant, and waterproof zippers specifically designed for mortuary bags. These zippers feature a robust, flexible track and teeth that can withstand repeated use and remain securely closed under pressure.
Zipper Sealing
To prevent any leakage through the zipper, we employ a specialized sealing technique. This involves applying a waterproof silicone or polyurethane-based sealant around the zipper teeth and track, ensuring that even the smallest droplets are unable to penetrate the bag.
4. Seam Sealing
Thermal Welding and Seam Sealing
All seams in the mortuary bag are meticulously sealed using thermal welding techniques. This involves heating the seam edges to a high temperature and then pressing them together to create a strong, leak-proof bond. Additional seam sealing with waterproof adhesives or sealants ensures that no moisture can seep through the seams.
5. Testing and Quality Control
Hydrostatic Pressure Testing
Each completed mortuary bag undergoes rigorous hydrostatic pressure testing to verify its waterproof and leak-proof capabilities. This involves filling the bag with water and applying increasing pressure to simulate extreme conditions, ensuring no leaks occur.
Visual and Functional Inspection
A comprehensive visual and functional inspection is also conducted to check for any defects, tears, or imperfections in the material, seams, and zipper. Only bags that meet our stringent quality standards are approved for use.
6. Packaging and Labeling
Protective Packaging
To maintain the integrity of the bags during transportation and storage, they are carefully packaged in protective materials such as plastic wraps and cardboard boxes. This ensures they arrive in perfect condition, ready for use.
Clear Labeling
Each bag is labeled with detailed information about its specifications, including material composition, dimensions, and instructions for use. This information is crucial for ensuring that users understand the capabilities and limitations of the bags.
