Due to the different needs of paper tray manufacturers in the industry, the quality of paper trays is relatively good and the specifications and sizes of different products are not the same. The use of paper trays as packaging generally requires customized design. Dada will give you an analysis of the parameters involved in the custom design of paper tray products:
①Size and wall thickness: The most basic requirement of the paper tray structure design is to ensure close contact with the packaged material to prevent the packaged material from moving in the circulation process, so the size must be compact in the paper tray packaging structure design , And then consider the subsequent buffering and shockproof issues on this basis. The wall thickness is an important factor that affects the strength of the paper support, and the wall thickness should be reduced as much as possible under the premise of meeting the strength of the paper support.
② Demolding inclination: During the paper tray packaging molding process, the wet paper mold is tightly attached to the mesh mold and the paper fiber will be embedded in the mesh of the mesh mold. In order to facilitate the transfer of the wet paper mold, and the direction of demolding The surfaces of the parallel paper support should have a reasonable draft angle. The larger the inclination, the easier it is to demold. If the inclination is too small, it will be difficult to demold, and it will also cause scratches or cracks on the surface of the paper support. Too large a slope will reduce the dimensional accuracy of the paper tray, and also affect the load-bearing capacity and elastic recovery force of the paper tray. At present, the draft angle is generally 3°--6°.
③Transition arc: In the design of the paper support structure, the corners of the inner and outer surfaces of the paper support, the connection between the vertical ribs and the main body, and the ends of the vertical ribs must be transitioned with arcs to avoid straight edges and right angles. The arc transition of the paper tray packaging is beneficial to the manufacture of the mold and the attachment of the net, the demolding during the transfer of the wet paper mold, the flow of the pulp liquid material during the adsorption and forming, and it is also beneficial to avoid stress concentration causing packaging damage. The radius of the transition arc can be determined according to the specific product and paper properties and the special requirements of packaging, generally 2-5mm.
The process technology of the paper tray manufacturer is simple and practical, and there is basically no pollution in the production process, which meets the requirements of cleaner production. Coupled with the high degree of localization of its equipment, it is very conducive to the popularization of the project. At present, many domestic paper tray manufacturers can achieve rapid mass production of paper tray packaging materials from a wide range of sources and low cost. It is mainly made of waste paper or annual herb fiber pulp. The raw materials can be adapted to local conditions. The paper tray is light in quality, low in recycling costs, and can be used repeatedly. It has good shock resistance and cushioning properties, and uses the suspension method to produce excellent adsorption, which can effectively protect the product from damage during transportation!
