What are the specific requirements for the performance of Children's Card Book Adhesives?
Publish Time: 2024-08-22
The performance requirements of children's card book adhesives usually include the following aspects:
Safety:
Non-toxic and odorless: Children may have direct contact with card books and may even put cards in their mouths, so the adhesive must be non-toxic, non-irritating, and must not cause any potential harm to children's health. For example, it must not contain harmful substances such as formaldehyde and benzene.
Comply with relevant standards: It must meet national and industry safety standards and regulations for adhesives in children's products, such as passing specific safety certifications.
Bond strength:
Sufficient bonding: It can firmly bond the various parts of the card book, such as paper, cardboard, plastic sheets, etc., together. Under normal use and a certain degree of external force (such as children flipping through, pulling, etc.), there will be no degumming, stratification, etc., to ensure the structural integrity of the card book.
Uniform bonding effect: On the bonding interface, the bonding force should be evenly distributed, and the local bonding force should not be too strong or too weak, otherwise it will cause the surface of the card book to be uneven or easy to be damaged at weak points.
Durability:
Anti-aging performance: During long-term storage and use, there will be no obvious performance degradation due to the passage of time and environmental changes (such as temperature, humidity, etc.), such as decreased adhesion, yellowing, brittleness, etc., to ensure the service life of the card book.
Water resistance: If the card book may be exposed to a small amount of water, such as water accidentally spilled by children, the adhesive should have a certain water resistance and will not immediately lose adhesion or cause serious deformation after contact with water.
Drying speed:
Moderate drying time: The drying speed should not be too fast, otherwise it may not be able to perform operations such as assembly during the production process; but it should not be too slow, so as not to affect production efficiency and the production cycle of the card book. For example, for large-scale production of children's card books, the drying time of the adhesive needs to be controlled within a reasonable range to meet the rhythm of the production line.
Flexibility:
Good flexibility: When children use card books, they may bend and fold them. The adhesive should have a certain flexibility to adapt to these deformations without breaking or losing adhesion, so that the card book can remain in good condition in various usage scenarios.
Coating property:
Easy to coat: During the production process, it can be easily coated on the material surface of the card book, and the coating is uniform, without glue flow, accumulation, etc., to ensure the stability and consistency of the bonding quality.
Cleanliness:
No pollution to the card: During the bonding process, it will not pollute the surface of the card book, such as leaving stains, marks, etc., affecting the appearance and quality of the card book.
Anti-migration:
Prevent component migration: The components in the adhesive cannot migrate to other parts of the card book, such as paper, ink, etc., to avoid affecting the content of the card book, such as causing blurred printed patterns, discoloration and other problems.
