What are the specific adhesive requirements in the paper converting industry?

Here are key factors and requirements to remember when choosing the adhesives and sealants.

General Properties:

• Strong Adhesion: Adhesives should make a durable bond between different paper types, films, laminates, and other materials utilized in converting processes.
• Fast Setting: High production rates usually require quick-setting adhesives to minimize downtime and maintain efficiency.
• Flexibility: Some applications demand flexibility for better folding, shaping, or movement without compromising bond integrity.
• Moisture Resistance: Adhesives that are exposed to moisture (e.g., food packaging) should be water-resistant to prevent application from delamination or warping.
• Heat Resistance: Make sure adhesives withstand specific temperature ranges during conversion or use. For example, adhesives for paper cups should stand up to the ideal coffee temperature of 155 to 175 degrees Fahrenheit.
• Food Safety: When it comes to adhesives for paper-based food packaging, they must comply with strict regulations to provide non-toxicity and migration resistance.

Specific Application Requirements:

• Lamination: Adhesives must have strong, uniform bonds between different paper and film layers, often demanding fast setting and flexibility.
• Corrugated board: High-strength adhesives are necessary for box manufacturing, heavy loads, and potential rough handling.
• Labels: Label adhesives demand superior adhesion to various surfaces, tamper-proof qualities, and potential moisture or temperature resistance.
• Folding cartons: Adhesives must provide clean folds without cracking, offering flexibility and potentially fast setting for high-volume production.
• Envelopes and mailers: Strong, tamper-evident adhesives are required for safe closure and potential moisture resistance.
• Tapes and graphics: Adhesives need substantial initial tack, long-lasting holding power, and potential flexibility, depending on the application.