Patent name: Method of hydrodynamic encapsulation of many final three-dimensional products using water jet Patent applicant Fresner GmbH Principal Applicant Address Egersbach, Germany Inventor A. Watts Application (Patent) No. 200380101452.9 Application date 2003.11.21 Award date Approval announcement number 1705780 Audit announcement date 2005.12.07 Manual CD No. D0549 Main classification number D04H1/46 Classification No. D04H1/46; D04H3/10; D04H5/02; D04H13/00 division Original application number Priority item 2002.11.29 DE 10256138.9 Abstract The final product should be packaged between two layers of non-woven fabric by hydraulic spunlace and closed around it. The non-woven fabric will not be napped when used and will not be attached to the product when packaged. In addition, the product maintains its volume as much as possible during packaging. In order to achieve the above object, the covered non-woven fabric is pre-fixed by hydraulic hydroentangling. Excellent results are obtained when using perforated nonwovens to cover the end product, which perforations are about 5-20 per inch and are connected to each other by this hydroentanglement. Sovereignty Item 1. A method for encapsulating a layer comprising a plurality of three-dimensional end products by means of a continuous and uniform flow of liquid ejected from a nozzle beam over a working width, the product being at least two layers, partially three layers Or more layers of non-woven fabric, gauze, possibly additional textile or knitted fabric that are layered together, a liquid is ejected by pressure from a row of fine nozzle openings toward a fabric belt that advances relative to the nozzle beam. These nozzle openings consist of at least one nozzle strip extending along the working width of the at least one nozzle beam, characterized in that a non-woven fabric, which later covers the intermediate layer, is first of all consolidated with water jets, in this consolidated form. The intermediate layer and the final three-dimensional form of the material to be encapsulated are placed on the nonwoven fabric, and then the two layers are covered with another non-woven fabric pre-consolidated using the same method, and all the materials are hydraulically needled. The method is uniformly loaded over the working width so that the two layers of overlapping nonwovens are combined. International Application 2003-11-21 PCT/EP2003/050862 International Publication 2004-06-17 WO2004/050977 Date of Entry into the Country Patent Agency China Council for the Promotion of International Trade Patent and Trademark Office Organization Address Agent Xie Zhigang
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Types of Outdoor Sports Backpacks,Mainly include mountaineering bags, travel bags, bicycle special bags, backpack bags, etc.
mountaineering backpack has two categories: one is a large backpack with a volume between 50-80 liters; the other is a small backpack with a volume between 20-35 liters.Large mountaineering bags are mainly used to transport mountaineering materials in mountaineering, while small mountaineering bags are generally used for high-altitude climbing or assault peaks.The backpack for mountaineering is designed to cope with extreme environments. It is exquisite and unique. Generally, the body is slender and long. The back of the bag is designed according to the natural curve of the human body, so that the body of the bag is close to the back of the person, so as to reduce the pressure on the shoulders by the straps.
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