Manufacturing process of high temperature resistant bar code label

Release time:

2020-07-30

High temperature resistant bar code label manufacturing process: material: reinforced glass fiber grinding wheel mesh, phenolic resin, reinforced glass fiber. High temperature resistant bar code label process: the product is made of glass fiber mesh coated with phenolic resin by drying and die cutting.

　　High temperature resistant bar code labelThe manufacturing process:

Material: reinforced glass fiber grinding wheel mesh, phenolic resin, reinforced glass fiber.

High temperature resistant bar code label process: the product is made of glass fiber mesh coated with phenolic resin by drying and die cutting.

　　High temperature resistant bar code labelThe resin is first ground and the curing operation can be carried out in a stationary curing oven or a flow tunnel curing kiln. It is especially important to cure in the curing oven where the grinding wheel is placed. Usually, the grinding wheel is fixed with a steel or ceramic disc to ensure that the grinding wheel will not deform during the curing process and is evenly placed in the furnace. High temperature resistant bar code label, there should be air circulation in the furnace to heat all parts evenly, and then start the heating program for curing; use a tunnel curing kiln for curing, first fix the grinding wheel with a steel or ceramic disc, and then put it into the trolley, Push into the tunnel and run at the set speed. Generally, the initial temperature is 60-80 and the temperature is 160-190. The entire curing process takes 20-25 hours, and finally the temperature drops to 40-60. Open the furnace door to take out the grinding wheel. Physical and chemical changes occur throughout the heating process, with the following reactions occurring primarily at each temperature stage:

At 80, the resin begins to melt, the water evaporates, and the curing reaction begins.High temperature resistant bar code label

When 110, it decomposes 6 times to promote the cross-linking of the molten resin, while releasing ammonia, water and other gases;

The resin was cross-linked at 110-180 ° C. until fully cured and released a large amount of ammonia gas. High temperature resistant bar code label

Being in the high temperature zone for a long time will cause excessive curing of the resin, which will cause the strength of the grinding wheel to decrease and the hardness of the grinding wheel to increase. Different curing curves and final curing temperatures are usually selected according to the different requirements of the grinding wheel.

The final temperature is 165-170, the grinding wheel is hard and tough, the final temperature is 175-180, the grinding wheel is hard and fragile, formingHigh temperature resistant bar code label.

Key words:

Analysis on the Structure of High Temperature Bar Code Label

High temperature resistant bar code labels will not deform under high temperature?

Analysis on the Structure of High Temperature Bar Code Label

High temperature resistant bar code labels will not deform under high temperature?