Stretching of the stretched film is to strictly control the quality. Therefore, in the time of the slitting process, we need to pay special attention to several key points: the cutting direction, the cutting direction, the joint method, and the color of the joint tape. , joint bonding methods, electrostatic treatment, these are important links of cutting, directly affect the quality of the product, so must not ignore, then we will carefully analyze.

1, the cutting direction
The slitting orientation refers to the lower knife orientation of the slitting cutter.
Any slitting machine has a certain slitting error. In order to ensure the integrity of the product drawing, it is necessary to fully consider the orientation of the lower knife when cutting, and the cutting orientation is faulty, which may result in difficulty in tracking the stretched film or drawing defects. For example, the general product design has a cursor, usually 5×10mm or 4×8mm, and the cutting direction is generally cut along the cursor or divided into two. However, sometimes some designs have a large difference in the hue of adjacent pictures. Or because of the active packaging requirements, some back sealing lines have text, it is necessary to ensure the orientation of the text. Therefore, it is necessary to consider the orientation bias when cutting. It cannot be carried out according to the normal conditions. Clear regulations.

A lot of time is due to the fact that the machine is not clear about the cutting direction, and the cutting is carried out according to the routine, resulting in product loss. Therefore, in product design and production of cutting operation documents, it is necessary to clearly and clearly articulate the cutting direction requirements.

2, the direction of the cut
The slitting direction refers to the unwinding direction of the product roll or the semi-product roll.

The correctness of the cutting direction directly affects the coding orientation of the active packaging machine, the sealing orientation of the product product or the orientation of the special shape cutter. Of course, the direction error can be adjusted by the active packaging machine or the product machine adjustment, however, this It will greatly reduce the speed of active packaging or products, which will seriously affect the production power. Therefore, it is necessary to ask about the unwinding direction of the stretched film when signing with the customer. It is necessary to consider the sealing orientation and the tooling of the product machine. Requirements, clear and correct cutting direction, to prevent returns and secondary rewinding.

3, connector mode
The joint method refers to the overlapping manner of the upper and lower membranes, and there are generally two types of splicing and reverse connection.

When the joint direction is reversed, the active packaging machine will form a film, the film, the material is broken, and the like, thus forming a shutdown, which seriously affects the production power. Therefore, it is necessary to clear and correct the joint method according to the requirements of the customer packaging machine. This is necessary to make it clear when signing with the customer. Often the customer does not clearly understand the packaging requirements. However, as a manufacturer, it is necessary to consider the customer comprehensively.

4, joint tape color
Tape refers to a common polypropylene plastic tape used to bond stretched films.

In order to facilitate active packaging identification and product identification and detection, it is usually used with a tape with a contrasting color of the produced product. This is generally not specified by the customer, but it is necessary for the manufacturer to be clear: the same product of the same manufacturer. It is necessary to use the same kind of color tape, which can not be varied, so as to facilitate management and manipulation to prevent confusion. The useful control from the use of the tape can prevent the joint products from falling into the market or the hands of the customers, causing unnecessary troubles.

5, joint bonding method

Joint bonding generally adopts a drawing or cursor docking method, so that it can be ensured that it is not affected by the joint during the filming process, and can be continuously produced without a decrease in production power. The active packaging product roll adhesive tape is not allowed to be flanged at both ends, and it is required to be aligned with the film width and adhered; the semi-product roll of the product generally requires one end of the tape to be turned over, so as to pay attention to the joint orientation when the product is used, and the joint bag is strictly controlled to be mixed into the product bag. .

6, electrostatic treatment

Static electricity is a major hidden danger in the production process of stretched film. Due to the existence of static electricity, the problem of unwinding and digging of the slit film roll will be formed. For the packaging of powdery products, the electrostatic effect is greater and will be adsorbed. In the appearance of it, resulting in poor heat sealing and untidy appearance, it is necessary to eliminate static electricity during the slitting process.

At present, static elimination is eliminated in the slitting process. The common method is to use a static eliminator. Therefore, unless a special product is used, it is necessary to open the static eliminator when the product is cut. Briefly, slitting is the process of dividing a film of a width through a cutter effect into a number of products of equal width or unequal width. From the appearance point of view, the process of cutting and printing, composite and so on is relatively simple, but often there is a subtlety in the simple, as long as the importance of cutting is fully recognized, and the basic essentials of cutting are fully grasped, the cost will be reduced. To ensure the quality of the products, we are able to satisfy the needs of our customers and provide a solid guarantee for the quality of the products.
When we produce the stretched film, the slitting process is a simple and important part. Therefore, we need to master the important cutting steps to prepare for the work in advance, and the cutting is a process of production. We must not ignore it. In order to ensure the high quality of our products, we must not be taken lightly.