73. How to improve labeling results when using a labeling machine?
A proper label is essential for consuming products, not only because it can send product details to customers, but it is also necessary in create more sales. It makes the stable labeling quality and maintain high accuracy very important when batch production by an automatic labeling machine. To provide stable labeling quality requires regular machine maintenance and proper machine setting. For instance, some clients may have feedbacks of label smoothing problems after using an auto labeler for a while, such as inaccurate labeling position, wrinkles or bubbles on the label, folded labels...etc. So how to resolve these problems and get the labels done well?
There are three essential components to apply a label beautifully and with accuracy when using a automatic labelling machine:
1. The product needs to be dry and clean, smooth and flat, with not much product tolerance.
2. Knows how to set and operate a labeling machine
Many of the labeling problems occur when changing to new labels or bottles. Since the dimensions are different from the original product, most of the parameter of the machine need to be adjusted to fit the new product. However, you may not get a good labeling result if you do not know how to set the labeler correctly.
Another scenario is some products may look the same at the first glance, but they in fact exist differences. Which will then require minor adjustments on the machine setting to fit the product tolerances. However, good quality and consistency of product is still the key to have stable and accurate labeling results.
3. Regular maintenance
Labeling results could also been effect by lack of maintenance, such as residue of labels on rollers, heavy dust on mechanism, or wear and tear of consumable parts. Those situations above could raise the labeling defective rate, even the labeler looks normal to you.
Here are some troubleshooting suggestions:
1. The labels can not attach properly onto the product.
1-1. The product could be placed too far from the label dispenser, try adjusting the guiderail or label dispenser to make sure there’s only a tiny gap between product and label peeling plate.
1-2. The label dispense timing could been set incorrectly; you may adjust the dispensing time through the LED control panel or adjust the position of product sensor.
1-3. The shape of product may not be applicable by the labeler, please check the spec sheet.
1-4. Dusty, wet or oily products could also result the labels from proper attached onto the products. Make sure your products are dry and clean.
2. The labels walk up and down, lack of accuracy.
2-1. The distance of guiderail could be too wide, which leads an unstable product position when passing label dispenser. Try adjusting the guiderail, it should be slightly touching the product, and guide the product to the proper position.
2-2. Check the label roll threading, the threading path should be the same as instructed. Re-thread the label roll to make sure its tight and flat with no curly part when needed.
2-3. Make sure the peel plate is parallel with the labeling surface of the product. If it’s not in parallel, you may adjust the tilting angle of the label dispenser.
2-4. Poor quality of labeling products, some labeling products are just too uneven on dimensions or surfaces. You will need to improve the quality of labeling products.
2-5. Check if there’s residue of labels on rollers, it could cause uneven tension when dispense labels. It is important to clean the rollers of the label dispenser regularly.
3. Wrinkled labels
Check if the product is curvy or concaved, the defective products should be removed from production.
4. Bubbles in the label or fail to attach on completely.
4-1. For round bottle labeling machine: The height of wrap belt should be able to cover the labeling area fully, if not, please adjust it.
4-2. For flat product labeling machine: The label smoothing components, such as a brush or sponge may not provide proper pressure to the labeling containers. Please adjust the label smoothing component and make sure it touches the labeling product products properly.
4-3. The labels may dispense too soon, try slowing the label dispense speed or dispense timing.
4-4. The label dispensing speed should match the wrap belt speed to prevent label pulling by the wrap belt.
5. Not leveled labels on wrap around labeling product, one end is higher or lower than the other end.
It could be tilted label dispenser, when the label dispenser is not horizontal to the conveyor could result not leveled labels. If the labels always go same direction when apply onto the products, either up or down, then you could adjust the angle of the label dispenser to make it horizontal to the conveyor.