How to distinguish the quality of thermal paper?
1. Appearance: If the paper is very white, it indicates that the protective coating and thermal sensitive coating of the paper are unreasonable, and too much fluorescent powder has been added. A better paper should have a slight greenish tint. If the smoothness of the paper is not high or appears uneven, it indicates that the coating on the paper is not uniform. If the paper appears to reflect strong light, it is also due to the addition of too much fluorescent powder, resulting in poor quality.
2. Fire baking: The method of fire baking is also very simple. Use a lighter to heat the back of the paper. If the color appearing on the paper after heating is brown, it indicates that the heat sensitive formula is not very reasonable and the storage time may be relatively short. If there are small stripes or uneven color blocks on the black part of the paper, it indicates that the coating is uneven. High quality paper should be black green (with a hint of green) after heating, and the color blocks should be uniform, gradually fading from the center to the surrounding areas.
3. Comparison and identification of sunlight exposure: After applying a fluorescent pen to the printed paper, place it in the sun to accelerate the reaction of the thermosensitive coating to light. Which type of paper turns black the fastest indicates a shorter shelf life.
The difference between five proof thermal paper and three proof thermal paper
Five anti thermal paper, also known as thermal synthetic paper, has stronger waterproof, oil resistant, alcohol resistant, wear-resistant, scratch resistant, light resistant, and heat-resistant properties. It has a thick protective layer on the surface and a tough tear resistant label paper as the base paper;
Three proof thermal paper mainly has waterproof, oil resistant, scratch resistant properties, and can be stored for a long time, about 2 years. Scratches are not obvious when scratched with nails. Three proof thermal paper adhesive labels are widely used in fields such as shopping mall, supermarket electronic scale paper, clothing, international logistics, etc.
What is Blue Grid Thermal Paper Adhesive?
Blue grid thermal paper is actually a thermal paper adhesive with a blue grid substrate. In addition to blue grid substrate, there are also white grid substrate, white thick substrate, etc. Today we will learn about the advantages of Blue Grid, as follows:
Blue grid and white grid are both types of Grassin base paper, with only different colors and the following characteristics:
1. The paper has a uniform texture and strong transparency
The best Gracin paper has a tight and uniform texture, and its transparency is particularly strong, much stronger than traditional glass paper. Therefore, it is also very popular among people and is often used in the production of barcode labels and raw materials for products such as tape, and is also suitable for rotary or flat die cutting
2. High temperature resistance and good moisture and oil resistance
Grassin paper has a unique feature of high temperature resistance and good moisture and oil resistance. This type of paper is widely used as a raw material for packaging in the food and pharmaceutical industry, playing a role in waterproofing and oil resistance. It is different from ordinary paper and has certain functional characteristics, which can meet some high demands of customers
3. The strength inside the paper is high
Grassin paper is mainly used as release paper for adhesive tapes and dressings in medical products because of its high internal strength. The paper processed from this type of paper naturally has sufficient strength and can also have a durable effect. Increasing its service life can also be considered as cost saving and improving its cost-effectiveness.
