What is the emphasis on in-mold labeling technology

Update: 07-05-2021

Generally speaking, the label materials accepted Cap mo […]

Generally speaking, the label materials accepted Cap mould by in-mold labeling are divided into PP and PE, and the labels for in-mold labeling are divided into three layers. The first layer is the printable layer; the second layer is the main layer; the third layer is the hot melt adhesive layer. The in-mold label must have excellent exhaust function. When integrated with the product, the effectiveness of the exhaust directly affects the surface of the product. The in-mold label must be electrostatically treated after printing, otherwise it will directly affect the yield of the labelled product.

Advantages of in-mold labeling:

1. Fresh and elegant appearance.
Since the in-mold label and the plastic part are naturally integrated, there will be no signs of blistering or wrinkles. At the same time, the in-mold labeling and printing are exquisite, which can be used for special effects such as laser and aluminum plating, which greatly improves the product packaging level.


2. Anti-counterfeiting effect.
The in-mold labeling system is relatively powerful and eliminates the possibility of fraud. This provides users who seek quality, character, and brand plastic packaging products with very reliable brand maintenance skills.


3. Safety and environmental protection.
Generally, the label has to wait for the plastic part to be formed before labeling, and the in-mold label and the plastic part are formed at one time, which prevents the labeling process from causing pollution to the bottle body. Furthermore, the in-mold label has the same chemical composition as the plastic part and can be accepted together, and the acceptance rate is high.


4. Not easy to fall off and damage.
The in-mold label has the properties of waterproof, oil proof, mildew proof, acid and alkali resistance, abrasion resistance, etc., and it is not easy to be damaged under special conditions.


5. The side walls are reinforced.
The label is embedded in the side wall of the plastic part, which can increase the extrusion strength of the side wall of the plastic part by 20%, so that the label will not be scattered when the plastic part is warped and squeezed.


6. High obedience and high efficiency.
In-mold labels and plastic parts are formed at one time, so that the packaging production rate is faster, and the filling line compliance can be improved by 5% to 20%. As the manual labeling after filling is omitted, the cost is reduced.


The requirements of in-mold labeling for injection molding machines, molds, robots, and labels are: the injection molding machine used for in-mold labeling must have high stability, because it is a key factor in controlling the rate of defective products and production compliance.


The mold material requirement is to ensure that when the label is adsorbed by static electricity, the mold cavity can firmly hold the label, and the static electricity can be completely eliminated after the adsorption is completed.


In addition, when the mold is holding moisture adsorption, it must also ensure that it does not rust; the quality of label die-cutting is very tight, if the size is not correct, it will affect the surface of the product; the precision of the robot is extremely high, and the label must be able to position correctly in the mold.