Adhesive tape residue and storage precautions

Teach you how to prevent the adhesive tape from leaving residual glue in the pasted place and storage precautions:

1. Used for corona treatment of PP and PET film of tape.

Corona or flame treatment results in the formation of a layer that forms chemical bonds with oxidizing groups on the surface of the material, thereby improving the polarity and chemical reactivity of the surface. Corona or flame treatment is usually done by the film supplier. If you need to deal with it yourself, you must pay attention to the power and time of the corona. If the corona is insufficient, there is not enough polarity; if the corona is too large, the surface of the material will be damaged, the surface strength will be reduced, and finally the adhesion will be reduced. In addition, surface pretreatment is usually timely. Although the surface tension of the treated film increases, it is physically unstable. After a period of time, small oil molecules in most materials, such as low molecular weight resins or plasticizers, and oily substances in the air, will migrate to the surface of the film, thereby reducing the surface tension again. This phenomenon exists in all corona materials, especially in materials whose glass transition temperature is lower than room temperature, such as PP, PE, etc.

On the basis of corona treatment, PP, BOPP and PE tapes are coated with primer primer|adhesive to improve the adhesive performance of pressure-sensitive adhesives.

The primers of PP, BOPP and PE tapes from Watsons in the United States use primers|primers|adhesives to improve the adhesion between the adhesive and the plastic film. In addition to the factors of the material itself, the coating process also plays an important role. First, ensure a certain film thickness. Generally, the thicker the film, the better the stress relief effect. Of course, the higher the cost, and the higher the drying/curing conditions required. In addition, the drying process should be determined according to the supplier's prompts and according to the manufacturer's own equipment conditions. In principle, the product should be completely dry, otherwise its function will be affected. Different films have different restrictions on the drying temperature. The temperature resistance of PET film is higher than that of PP film. The drying temperature can also be increased accordingly to improve work efficiency. In the process of adjusting process conditions, the supplier's technical service capabilities are very important. It must be able to help users adjust process conditions.

2. Precautions for tape storage

The tape should be placed in a roll and not folded. When the storage time is too long, the tape should be rolled once every season.

If early damage to the tape is found during use, the cause should be discovered in time and repaired to avoid adverse consequences.

When loading and unloading the conveyor belt, use a crane with a beam and a rope to lift it steadily, so as not to damage the edge of the belt, and it will not be roughly loaded and unloaded, resulting in loose rolling and swinging sleeves.

When the conveyor is equipped with baffles and cleaning devices, avoid the use of tape.

Cleanliness is the basic condition for good tape operation. Foreign matter will affect the eccentricity of the tape, the tension difference and even break.

The types and specifications of tape should be selected according to needs and specific conditions.

Different types, sizes, strengths and layers of tape are not allowed to be connected.

Adhesive tape should be stored in the warehouse, avoid sun and rain, prohibit contact with organic solvents of acidic grease, and keep it clean and dry. The room temperature is between 0~25℃, 1 meter away from the discovery device.

Contact: lulu Email:lulu@yhtape.com