Double-crimped leak-proof filter bag
CN224331740UActive Publication Date: 2026-06-09SHANGHAI LANSEN FILTER MATERIALS TECH CO LTD
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHANGHAI LANSEN FILTER MATERIALS TECH CO LTD
- Filing Date
- 2025-07-14
- Publication Date
- 2026-06-09
AI Technical Summary
Technical Problem
The existing filter bags have poor seam strength, are easily damaged, and are prone to dust leakage at the seams, resulting in substandard filtration.
Method used
Use a double-rolled edge structure for stitching, and apply leak-proof glue or apply leak-proof film to the needle holes of the sutures. Use polyester, PTFE or glass fiber sutures, with a stitch spacing of 25-35 stitches per 10cm, and the sutures should be at least 2-3mm away from the edge.
Benefits of technology
It improves the connection strength at the seams of the filter bags, prevents damage, reduces ash leakage, and achieves the filtration requirements for ultra-low emissions.
✦ Generated by Eureka AI based on patent content.
Smart Images
Figure CN224331740U_ABST
Abstract
The utility model relates to a double-crimped leakproof filter bag, comprising a bag body and a bag bottom, the bag body is the tubular structure formed by the sewing of the two side edges of sheet filter material, the joint of the two side edges of sheet filter material is double-crimped structure, the double-crimped structure is connected by sewing thread, and the needle eye of the sewing thread is provided with a leakproof adhesive layer or a leakproof film; the bag bottom is sewn at the bottom of the bag body. The filter bag joint of the utility model is sewn by double-crimped structure, which can increase the strength of the joint, prevent the filter bag from being damaged due to the vibration of back-blowing dust removal, and prolong the service life of the filter bag.
Need to check novelty before this filing date? Find Prior Art