Zipper bag manufacturers introduce the use of vacuum bags and precautions
1. Pay attention to the vacuum packaging bag before and after inflation, and do not let sharp objects scratch. It is better to operate on the bed or on the clean table top. If there are hard objects such as buttons and zippers in the storage items, please fold them inside and put them into the collection bag. When storing in the cabinet or other places, also pay attention to whether there are sharp objects in the storage place to ensure that the bags are in good condition.
2. Clothes, quilts and other items should be placed in the bag as far as possible, at least 3-5cm away from the closure zipper, and large items should not be forced into the bag.
3. To ensure that the zipper part of the seal is clean, if fiber and dust enter, the sealing performance will be reduced. It is recommended to wipe the zipper with water stained gauze before closing the zipper. After closing the zipper, please hold the slide with your hand and pull it back and forth several times to ensure that the two ribs of the seal are fully buckled into the groove to ensure the sealing effect.
4. When using the air pump, screw the screw interface of the pump to the bottom, against the white rubber gasket of the air suction port to ensure that there is no air leakage at the interface. Generally, a large zipper bag needs to be pumped for 3 to 5 minutes, and it will take about 3-500 times to have obvious flattening phenomenon. In the use of pump attention to continuous pumping, had better not stop. It's best to have a vacuum cleaner at home, which is labor-saving and convenient.
5. Please check the sealing again to ensure the sealing.
Expanding knowledge: selection of gravure printing materials and printability of common substrate materials
For the printing of plastic film, it is required that the substrate film to be printed shall meet the following requirements: the surface shall be smooth and flat, without obvious stiffness, yellow black spots, holes, and excessive wrinkles; the average thickness error of the substrate film to be printed shall be within 10% (when the printing width is 1 m); under the printing tension, the elongation of the substrate film to be printed shall be less than 1%; the surface optical tension of the substrate film to be printed shall be no less than 40dyn / cm; in advance, it shall have the following requirements Understand the affinity between the substrate film and printing ink. For the film which is easy to dissolve and swell with the solvent in the printing ink, the printing speed and ink concentration can be higher. When coating substrate film coating layer printing, we should understand the adhesion between coating resin and ink. The adaptability of zipper bag printing varies with different printing substrates. In printing, it is necessary to choose different processes for production in order to achieve better quality effect. BOPP is the most commonly used printing substrate, and the key point of its production process is a typical plastic gravure printing process: select polyamide or chlorinated polypropylene ink for printing, appropriate tension and impression force, and control the drying temperature below 80 ° C. Key points of BOPET printing: because pet is usually thin and easy to wrinkle, large tension is required during printing, and it has certain selectivity for ink. When using general printing ink, it is easy to separate layers, block up (not on the Internet), fuzzing and scraping (knife thread) are easy to occur. High humidity in the workshop is good for printing. www.ycritai.cn/
Dongguan Beite packaging materials Co., Ltd
Dongguan special bag, plastic bag, plastic bag, plastic bag