Ultrasonic Seam Sealing Sewing Machine For Travel Bag Ultrasonic Seam Sealing Sewing Machine For Travel Bag - Cheersonic Three fabrics mainly used for making travel bags; 1 is polyester: polyester fabric is a kind of chemical fiber fabric used in daily life. It has high strength and elastic recovery ability. Therefore, it is firm, durable and wear-resistant. At present, many luggage and leather bags are made of this fabric. The [...]

Ultrasonic Lace Machine For Vacuum Bag Ultrasonic Lace Machine For Vacuum Bag - Cheersonic What’s cacuum bag? Vacuum bagging uses atmospheric pressure as a clamp to hold laminate plies together. The laminate is sealed within an airtight envelope. The envelope may be an airtight mold on one side and an airtight bag on the other. When the bag is sealed, pressure on the outside and inside of this envelope is [...]