How to keep the poster intact ... Method 1: Long paper barrels (environmentally friendly, safe and practical ~ ~) ① Find 5~6 cardboard barrels of the same size and good quality; (2) align these paper barrels, seal them into long barrels with sealant tape (preferably at the joint), and then seal the whole paper barrel with a layer of sealant tape from beginning to end. It can protect against moisture while strengthening protection. Roll up the poster with newspaper, then cover it with a long plastic envelope and put it in a long paper bucket prepared in advance. The purpose of rolling up the poster with newspaper is to prevent the poster from being scratched when it is put into the connecting port in the long tube. The long plastic envelope is a more effective protection against moisture and so on. ④ Both ends of the head and tail can be filled with foam of the same size with pressure-resistant foam (of course, no need to add). ⑤ After completion, put a label on the poster and stick it outside the long paper bucket for easy searching. ⑤ Put the long paper bucket with posters in a dry place to avoid getting wet (especially parents in Guangdong). If you don't think the long paper barrel looks good, parents can wrap a layer of wrapping paper you like on it. Of course, parents who want to save space can also roll 3-4 posters together and put them in the same paper bucket. Method 2: the vertical board is beautiful and practical ~ ~ (Disadvantages: it takes up space and may be spoiled or scolded by mom). (1) hard body thick card board (ceramic tile card board is also acceptable) and book film (one side of the card board is preferably rubber). The specifications are all wide. The original poster size is 5 cm. (2) put on the card board and stick the book and the film together with glue or staples. (3) After the poster is unfolded and flattened, it is carefully put into the vertical board prepared in advance. Parents who use glue must remember that the glue must be dry before entering. Avoid direct sunlight, which will lead to sun bleaching (that is, the original color will fade). (5) pay attention to put the vertical board in a dry place to prevent posters and films from being damaged by water vapor. P.S. does not recommend sticking the board and the film together with double-sided tape, because it will not look good when you see double-sided tape outside the film, and the glue will turn yellow after a long time. In fact, staples will rust if used for a long time, because glue is recommended, and it is best to be transparent when dried! It is also useful to defend yourself from two aspects. After changing the poster, put it back in the long paper bucket. It would be even more extravagant if I put up a board, because there are still some leftover decoration materials for moving. Some time ago, a royal family also got two pieces of unbreakable plastic glass with a thickness of 3mm from local materials and asked the decoration master to help me punch four holes to install the large decorative "Ross" nails bought outside. Is there any way to keep paper from turning yellow for a long time? If we can avoid oxidation as much as possible, we can avoid the yellowing of paper. As long as you can guarantee the following three points, paper yellowing can basically be avoided. These three points are to reduce contact with air, water and sunlight. For most people, contact with air is inevitable, but contact with moisture and sunlight can be avoided as much as possible. If you don't use some books often, you can try to seal them in a plastic bag and take them out when you use them. Usually, the shelf life of paper should not exceed one year. Even if the storage conditions of paper are good, the paper will change color and deteriorate if it is stored for too long. If the paper is stored for two years, the coated paper will turn yellow and lose powder; Newsprint turns yellow and brittle; The wrapping paper is discolored and its strength is reduced; Yellow paperboard and box paperboard will go moldy and deteriorate, and so on. In addition to the destruction of paper fibers caused by the aging and oxidation of the paper itself, the addition of chemicals in modern machines and the harsh environment (such as air pollution, ultraviolet rays, temperature and humidity, etc.) also make the paper tend to be acidic. ) and man-made damage will cause paper deterioration. Take the picture printed on the copper plate as an example: before repairing, make a detailed observation and record of the deterioration and measure the PH value of the paper, then start to remove the dust from the picture, after dry cleaning, wet washing, bleaching, gluing, deacidification and other treatments, then fill the holes and cracks with pasting paper, and complete the repair work after flattening, drying, binding and preservation. Paper turns yellow because it contains lignin, which is an acidic substance. It will be oxidized due to contact with air, light and humidity, and eventually become brittle and damaged. [Supplement] Please refer to the following for specific methods to prevent paper from yellowing: 1. Take it to others for gluing treatment (there are several kinds of glue, also called polishing or oil painting treatment) 2. Hot-pressed membrane shell protection 3. Stored in a professional safe, it can be controlled by warm pressure and wet pressure. 4. Frame, all kinds of materials are effective, tight point 5. Press under the table glass or plastic mat, or 65438. Or compress the collection quilt. 2. Roll them up and down with unused paper, or receive a poster bucket. 3. Try to be light-tight and airtight anyway. The reason why dry paper turns yellow is because it contains lignin, which is an acidic substance. When it comes into contact with air, light and environmental humidity, it will be oxidized and discolored, and finally it will become brittle and damaged. The best way is to use acid-free paper. 2. Put it in an acid-free storage box. The second method can only prolong the life of paper. How to save paper posters? What is the size of the poster if it can't be folded? If the size is smaller than your suitcase, you can find a slightly larger hard board, put the poster flat on it, wrap some newspapers and other things, tie it with any rope, and put it in the suitcase together, which will not affect your other things, and the poster can always be flat. If it is bigger than your suitcase, you can use a similar method, that is, holding it alone and not putting it in the suitcase, which is a bit troublesome. If it can be folded, there is no problem at all. Of course, rolling up is also a way, but it also depends on the length after rolling into a paper tube.