The selection of the velvet length for the inner lining of a ring box packaging should take into account a variety of factors. To highlight the various characteristics of the ring, there will be different jewelry box designs, much like many jewelry packaging boxes. They are not designed to accommodate all types of jewelry with a single size, but rather are tailored to the specific positioning of the jewelry. Here are some specific suggestions:
1. Basic reference values for ring box packaging.
Single ring slot: The velvet length is typically 50-70 millimeters (adjust according to ring size and slot design).
Regular rings (diameter 16-20mm): It is recommended that the velvet length covers the circumference of the slot interior and reserves 10%-15% extra (for example, if the circumference is 60mm, choose 66-70mm).
2. Key factors affecting ring box packaging.
Ring size: The circumference of the ring’s inner circle = π × diameter (for example, if the diameter is 18mm, the circumference is approximately 56.5mm). The length of the velvet cloth should be slightly longer than the circumference (adding 5-10mm) to ensure a secure wrap.
3. Ring box packaging groove structure.
Deep grooves (10-15mm deep): Additional side walls are required, with the length increased by twice the depth of the groove (e.g., if 12mm deep, the length increases by 24mm).
Shallow grooves (5-8mm deep): Only the inner walls need to be covered, with a reduction in the allowance.
4. Characteristics of ring box packaging velvet.
Elastic materials (such as stretch velvet): The length can be appropriately reduced (by 5%-8%), utilizing the elasticity for a snug fit.
Non-elastic thick velvet: Additional allowance is needed (about 15%-20%) to prevent tightness.
