Taizhou Garment Bag Solvent-Free Lamination: Top 10 Common Faults, Addressed One by One!

Taizhou Garment bags are widely used in the shirt, knitwear, clothing, textile, apparel, underwear, children's wear, and other industries. Nowadays, all clothing brand merchants are beginning to attach importance to Taizhou The role of garment bags on commodities 。 Only a finely crafted Taizhou garment bag can attract consumers' attention. And Lamination is an indispensable process in the production of Taizhou garment bags made of composite materials. If problems occur during the lamination process, it will not only directly affect the quality of Taizhou garment bags and products, but also indirectly affect product sales, so choosing a professional garment bag manufacturer is very important. Today, Shunxingyuan Packaging, a professional flexible packaging manufacturer, combines its many years of experience in producing high-quality packaging bags to analyze the top ten common malfunctions of solvent-free lamination one by one and proposes corresponding solutions.

I. Taizhou garment bag Lamination considers the influence of the color of the contents on the appearance

Garment bag For dark-colored, form-fitting contents, these appearance defects will highlight the surface as white spots.

With the same printing ink, affected by the concentration of the ink layer, the appearance is good in the tightly wound part, while in the loosely wound part, it appears as glue spots. If it is irregular glue spots, the amount of glue should be appropriately increased.
II. Relationship between winding tension changes and winding neatness

When the winding tension taper is set too small, the outer circle will exert greater pressure on the inner circle. If the friction between the inner and outer layers after the film is wound is small (the film is too smooth, the friction is small), the winding will be squeezed. However, when a larger winding tension taper is set, the winding can be neat.

The above example shows that the neatness of the solvent-free composite film winding is related to the setting of the tension parameters and the smoothness of the film.
III. Taizhou garment bag Aluminum shedding phenomenon after boiling

The solvent-free adhesive sample was tested, and the result showed that the aluminum shedding phenomenon after boiling was serious, and the performance was unstable in multiple batches of tests.

Solution:

It needs to be verified many times before it can be put into mass production.
IV. Taizhou garment bag Material wrinkles can cause white spots and bubbles in the composite film

Wrinkles in the raw materials directly lead to bubbles in the finished composite products. The reason is that the composite part is not pressed firmly and air is trapped. In severe cases, it cannot be cured.

Solution:

The speed of the laminator should be controlled, and the lamination quality should be determined before production. The tension on both sides of the film is difficult to balance. 。
V. Winding wrinkles

It can be determined that if the pressure roller has a jumping phenomenon during winding, the two layers The PE composite film surface is relatively soft, so it is easy to wrinkle the film roll.

There are many factors that cause the film roll to jump, such as paper core deformation (becoming elliptical), uneven cutting of the paper core end face resulting in assembly errors, and a sudden significant increase in film roll thickness. Naturally, a larger winding tension will also alleviate this phenomenon.
VI. Adhesive overflow at the edge of the rubber edge is prone to adhesion

Edge adhesive overflow, this phenomenon is related to excessive adhesive application.

In addition, if there is an accumulation of residual adhesive at both ends of the glue roller during production, it is very easy to cause adhesive overflow at the edge after winding. In solvent-free lamination, there is usually adhesive accumulation at the edge of the glue roller during low-speed operation, indicating that the adhesive application is larger during low-speed operation. During mid-stop and restart, the speed is low, and edge sticking is easy to occur at this time. Transfer roller width deviation and material unevenness correction failure will also cause edge sticking.
VII. Excessive adhesive application, bubbles appear in transparent areas

For patterns with transparent windows, a higher adhesive application is required to solve the appearance problem, but when the adhesive application is large, serious adhesive streaks appear in the transparent areas, resulting in the adhesive application in the ink area and transparency cannot be balanced.

Solution:

1. Improve the ink layer thickness to reduce the overall adhesive application and avoid obvious adhesive in the transparent area;

2. Select a high-viscosity solvent-free adhesive model. With the same adhesive application, the adhesive streaks will not be as obvious as low-viscosity solvent-free adhesives.

VIII. Bubbling and peeling phenomenon on the surface of the transfer roller

The bubbling and peeling phenomenon of the rubber transfer roller during use is a quality problem of the roller itself, and the most direct impact is uneven adhesive application.

Countermeasures:

Find a good transfer roller processor.
IX. Bubbles on the film surface at a fixed position

The bubbles appear at the same position on the surface of the film roll, which is caused by the loose winding of the film roll and the squeezing of the surface during unloading and weighing. After magnification, the shape of the bubbles is irregular.

Solution:

1. Wrap the surface of the forklift used for unloading with a blanket to reduce the local pressure on the surface of the film roll;

2. The surface winding should be tighter.
X. Small black spots appear in aluminum-plated composite

With the same composite process parameters, different adhesive models show different degrees of severity. 。

Improvement methods:

1. Matching of adhesive and ink;

2. Reduce adhesive application;

3. Low-temperature maturation.

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