Today, Jiangsu Kunzheng as PVC plastic sheet manufacturers will introduce PVC sheet. PVC sheet is now the raw material for many products, which can often be seen in our days, but there will still be some problems in the production and manufacturing process of PVC sheet, what problems will exist in detail? Poor adsorption of the photo material, which can often be seen, what is the cause of this? What's the best solution? Small make up for us to do the corresponding cleaning, can see.

The main reasons for poor adsorption of PVC sheet are as follows:

1. The coating is too thin and the coating is uneven. 2. The printing substrate is rough and the absorption is too strong. 3. The blister oil is too thin, and the blister power is lacking. 4. Lack of temperature when heating welding seal. 5. Ink layer crystallization effect. 6. Blister oil storage time is too long has deteriorated.

Corresponding solutions:

1. Adjust roll and coating amount. 2. Replace the printing substrate or apply the bottom oil first. 3. Replace the blister oil or increase the amount of coating. 4. Increase the sealing temperature. 5. Scrub the surface of the printed matter or dilute it with 5% lactic acid before applying the blister oil. 6. Replace the blister oil.

This is the reason and solution of PVC sheet if there is poor adsorption, if we encounter this kind of situation in the production process, we can calmly analyze it, there are still many good effects.

PVC sheet has a very wide range of uses, can be used to manufacture: Preven PVC card; PVC label; PVC wire; PVC curtain; PVC plastic-coated electric welding net; PVC foam board, PVC ceiling, PVC water pipe, PVC kicker and threading pipe, cable insulation, plastic doors and Windows, plastic bags, etc. So, do we have a way to distinguish the advantages and disadvantages of PVC sheets?

1. Determination of combustion method:

Softening or melting temperature range :75~90°C;

Self-extinguishing after lighting;

Burning flame condition: yellow above and green below smoke;

After the fire: the fire subsided;

Smell: pungent and sour taste.

2. Determination of solvent treatment:

Solvent: tetrahydrofuran, cyclohexanone, ketone, dimethylformamide;

Solvent free: methanol, acetone, heptane.

The PVC sheet is added to the above solvent, and the dissolution status of the plastic is investigated to determine whether it is PVC. After the solvent is heated, the dissolution will be more obvious.

3. Specific gravity method:

The proportion of PVC sheet color film is 1.35~1.45, generally around 1.38.

PVC and other plastics can be distinguished by specific gravity difference or specific gravity determination.

However, because PVC can be increased by plasticizers, modifiers and fillers, PVC becomes very different shares, soft and hard differences are very large, and because some components are added, many characteristics of the PVC sheet color table are changed, leading to our commonly used identification methods are not obvious and can not make accurate discrimination.

The above is the relevant content introduced to us by Jiangsu Kunzheng.