subject: Fault analysis using stickers - stickers - office supplies industry [print this page] Fault analysis using stickers - stickers - office supplies industry
Believe that twenty years ago most people also Label Unfamiliar, but to our lives today can be seen everywhere on the packaging of various products using self-adhesive labels. Label can be said has been more widely used in pharmaceutical, cosmetic, clothing, electronic products, everyday life and our industry. Now, although it is no longer unfamiliar to the stickers, but as a self-adhesive production and research professionals we often see some performance because of the stickers and the stickers do not understand the use of lead to irregularities in the use of fault. Here I encountered in the daily work of some due to improper use stickers to share with you the case of failure.
Case 1: Bing Ji Ling label label label dropped after Bing Ji Ling
a production manufacturers need to Shengbing Ji Ling plastic compartment on the use of stickers, Ji Ling as ice boxes in plastic immediately after filling to be placed in minus 38 degrees Celsius temperature refrigeration. Bing Ji Ling customers before leaving the factory where the product directly from the refrigerator out, immediately put a label on the lid. Several hours after the good results posted on the label all fall from the lid.
Failure analysis: The generation of this failure is due to customer self-adhesive glue caused by the use of performance do not understand. To clear analysis of the causes we must first understand the definition of several adhesives. They are: the initial adhesive viscosity, final viscosity, minimum temperature and temperature range labeling.
From a micro perspective to be affixed to any surface of the substrate can be seen as uneven surface. Self-adhesive labels to be affixed upon the surface of the substrate adhesive label just contacted yet to be posted in the surface leveling, adhesives and were posted on the bonding surface is weak, then the performance called the initial viscosity viscosity adhesive.
After the labeling period of time (generally 24 hours after labeling), adhesives are posted completely leveling the surface of the substrate. Be affixed with adhesive surface for maximum adhesion, when shown by adhesives called sticky end sticky adhesive.
For labeling adhesives can bear when the minimum temperature is called the minimum labeling adhesive temperature. That label must be a minimum temperature above the temperature of the environment to make adhesives under the label to maintain good mobility. If the label when the temperature falls below the minimum temperature is freezing adhesive label to be affixed affect adhesive substrate in the mobility of lead decreased the viscosity adhesives.
Labels are affixed to the substrate for some time after the adhesive to reach the final viscosity, in the course of the temperature range can withstand the use of adhesives called temperature range. The use of adhesives than the lowest temperature range of labeling a wide range of temperatures. Bing Ji Ling
sticker factory use adhesives used in labeling the temperature to zero at the minimum of 10 degrees to achieve the final viscosity after the temperature range from -40 to 90 degrees Celsius. Tags caused the initial drop is mainly due to labeling of the temperature (minus 38 degrees Celsius) lower than the minimum labeling of such adhesives temperature (zero at 10 degrees Celsius) in this case, adhesives lose mobility can not be frostbite good to be posted in the leveling surface, resulting in decreased viscosity of labels fall.
Solution: to know the reason for the failure occurs, there are two ways to solve it.
One, switching to ultra-low temperature for the adhesive label, but it would greatly increase costs.
Second, change the labeling process, the first ice factory Ji Ling 10 degrees Celsius at zero on the label under the lid of the plastic box above. Wait 24 hours after the glue to achieve the ultimate good adhesive label then paste filling plastic boxes placed in ice cold Ji Ling. As the sticky adhesive after reaching the final temperature range -40 C to 90 degrees Celsius. So, can adapt to low minus 38 degrees Celsius environment, the label dropped the phenomenon been completely resolved.
