Composite film bag must pay attention to the 5 point requirements

Bag is the composite packaging production of the final step, after the early stage of the printing, composite, have passed all the places most likely to have problems, so when bag making this step tends to treat STH lightly. In fact bag is also critical in this step, it should pay attention to place also many. 1, tooling selected composite film bag making equipment including specification plate, heat sealing cutter, punching machine, special tool, etc. Before production, we should first make clear the specific forms of composite membrane bag, then selected the appropriate tooling, and ensure the feasibility of tooling, it is very necessary. Tooling generally according to the size of the product and rules. Such as specification plate can be selected according to the width of the molding bag; Heat sealing knife according to the size of heat sealing, selected according to different heat sealing width, material, heat sealing knife and selected different form, in order to receive the best effect of heat sealing; Punching machine according to the shape of the hole, choose direct composite film bag punching or after punching processing, etc. 2, sealing sealing machine cutter position and cutter position position seems to be a simple matter, but often because of take it for granted and batch product loss, which is more common in flexible packaging factory. So, must carefully review before starting the production of single, clear bag sealing and cutter location, design or cursor products are generally according to the design or the cursor position, to determine the sealing, cutting knife, such as days or back cover, under the cursor or the cursor; For the design of irregular products, can according to the important sign of graphics to clear. General sealing and cutter location is closely linked, but sometimes also is not a complete reunification, some special products must check carefully, so as to avoid cutting errors. 3, easy to tear, vent position and form of mouth, vent is for bags for packing is convenient to use, an additional ways to different manufacturers for different requirements. Easy tear mouth forms a variety of, such as: laser way and the way of U or V punching. Laser easy tear holes very good anti-fake function, easy to use, but more expensive equipment, the more commonly used is on the edge of the sealing side of punching, the method is simple in operation and use are directly. Vent in a variety of ways, such as pocket pinhole, round hole, and the location of the different product requirements, quantity is also different, such as applied to solid packing of pocket vent, but along the longitudinal or transverse spacing bag or spacing is arranged several pinhole, in this way, can facilitate all content in exhaust, reduce breakage during transportation, storage. So, according to customer requirements and product use, easy to tear, punching way to clear the product is very important. 4, cutter knife form generally have straight line shape, tooth shape and so on, and tooth shape with straight tooth, arc tooth profile forms, etc. Straight knife is composite film bag, one of the most common form and use tooth cutter must pay attention to the knife shapes are consistent from top to bottom, has the different bag for up and down, must pay attention to material to or incised the installation position of the knife, to avoid tooth shape up and down the opposite. 5, back sealing bag sealing position back sealing seal position is according to the pattern design. Usually the sealing position, located in the center position on the surface of the bag, but sometimes consider design beautiful, continuous, integrity, back sealing seal position as a design and off center, different products will be different. Operators in operation, sometimes by design position is not obvious, and often, which is blind to this point, and operate in accordance with the sealing line take back, resulting in failure. So, in the production, before starting the should carefully examine and verify the production sheet, to avoid mistakes.