Introduction: Model WFD-800 bag-making machine of auto-compounded hiavy- bag, is developed by us recently on the bases of absorbing the bag-making technologies both of domestic and abroad extensively. A. Superiority Both the technologies of bag-making and its technological design are among the first of the country with the features of followings. Simplitication: The method of this machine-desihning simplifies the necessities of common bag machines including wire drawing machine, circular loom, plastic injection machine, film- coating machine, printing machine, etc, by one-time forming with advanced technology. The whole machine accepts the mechatronecs technology from the beginning of feeding of papers, yam, glue to the machine, to the following processes of bag-forming, bag-compounding, edge-folding, printing, hole-making, bag-cutting, and counting etc, in automation totally, Excellence: The machine has excellint properties with quick bag-making speed in 15-25 bags/min, binary color printing, smooth running, and one machine with two purposes, i.e. either making and sewing bottom bag in fine quality. Its entire quality index reached GB9774-1996 standard, and the waste bags can also be recollected. Therefore, it is an ideal green product to protect environment. Compactness: Since the structure of this machine has the feature of compactness in reasonable, it has no special conditions to the factory building. Energy-Saving: This machine just needs three operators with less power- consumption in 1000 bags costing 9 kilowatts power. Quick Learning: Both installing and learning of operating skill is very quick within fifteen working days. Low Noise & low Cost: This machine has low noise, and low labor intensity, and no harmful to its working surrounding by cleaning production with low cost. To sum up the above mentioned features, it is an ideal choice for bag-making and bag-using companies, such as ciment manufacturer, to buy our products because of its merit of less investing and quick cost-collicting etc. B. Usage & the Specialty of Cement Bag Produced by This Machine The vinylon-water soluble yam compound cement-packing bag produced by this machine, is integrated by paper, yam, and film with the characteristics of moisture proof, high temperature resistance resistace, anti-aging, high strength, good permeability, and low cost, Meanwhile, it can be recollected totally without polluting environment to meet international EP standard. These green products can be promoted intermationally. The new cement-packing bags produced by this machine, after being sampling tested and inspected by the relative state quality supervision and inspection institute, accorded with the relative state GB9774-1996 standard in all of its quality index, and now is being turned out in batch. The bags for packing all kinds of powder and granule materials such as cereal, starch, sugar, feed, chemical fertilizer, mineral products etc, can be produced by this machine. C. Major Technical Data 1. Raw Material: intemational paper-bag paper or regenerated paper-bag paper in 80g/m, and 1020mm of width, 18-20 count yam of vivylon water soluble yam (or vinylon yam), and 17-99PVA glue. 2. Specification: bag width 420mm, length 720-760mm, laid- in edge 8mm. 3. Fixed Operator: 3 persons 4. Speed of Bag-making: 15-25 pcs/min 5. Total Power: 10KW 6. Dimension: 14000x2500x2000(mm) 7. Weight: 5000KG D. Technological Process Warp in 416 spindles---gluing on threading---