How can grain packaging bags be printed clearly and firmly

The grain packaging bag shall be comfortable and smooth, and the cloth surface shall not have composite quality problems such as film opening, film shortage, delamination, bubbles and hard blocks, nor shall the suture be off needle, broken wire, and the roll fold is not sewn; Moreover, the cloth surface of the woven bag shall not have more than 3 broken wires or two layers of staggered adhesion at the same place. On the whole, the woven bag should be clean, and the printing should be clear and firm.

In fact, before purchasing, we should understand these characteristics clearly, so that we can choose excellent products at the time of selection. The tensile force in the bottom direction and edge direction of the seam, the clarity of printing ink, the accuracy of layout position, suture trace, needle distance, and the requirements of suture needle off and thread break. Then, the production process of plastic woven bags is that woven cloth becomes woven bags through printing, cutting and sewing. Depending on the equipment used, it can be cut before printing, or printed before cutting.

The packaging bag comprises a front side, a back side, a left side and a right side, and also comprises a bottom surface, which is composed of the extension parts of the front side, the back side, the left side and the right side. The packaging bag is sealed from head to tail by a complete plane, forming the front, back, left and right, and the sealing position is located between the front and left. There are transverse broken lines between each surface of the packaging bag and its respective extension, and there are vertical broken lines in the middle of the left and right sides.

The vacuum film packaging bag is formed by sealing two pieces of plastic film on three sides, which is characterized in that at least one of the two plastic film sheets has a mesh groove on the inner surface of the bag. The packing bag can also be used when the packaged goods are placed outside the vacuum machine and the bag mouth is pressed on the vacuum confidential sealing strip for air extraction operation. Since it is unnecessary to place the bag in the vacuum pumping room for pumping, the size of the article is not limited by the size of the pumping room, which saves equipment investment, expands the application scope of the packaging machine and is convenient to use.

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