Blister Pack Base Portion Design for Desiccant Capacity
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Solution Overview
Problem
Conventional blister packaging has limited desiccant or scavenger capacity due to the size and shape of the desiccant film, which restricts the effectiveness in maintaining the integrity and freshness of products like pills and tablets.
Innovation Solution
The design includes a thermoformed cover with a foil backing, where the blister cavity has a base portion wider and/or longer than the dome portion, allowing for an extruded film with a larger surface area to be adhered to the foil backing, enhancing the desiccant or oxygen scavenger capacity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If the desiccant film size is increased to improve moisture absorption capacity, then the desiccant capacity improves, but the film may no longer fit within the conventional blister opening
Solution Approach 1:
The invention extends the desiccant film beyond the traditional blister dome area into the base portion area, utilizing the lateral space in a different dimensional arrangement. The base portion is designed to be wider and/or longer than the dome portion, creating additional surface area in the horizontal plane where the desiccant film can be adhered to the foil backing, thus increasing desiccant capacity without conflicting with the vertical blister opening constraints.
2Quantity of substance
If the extruded film surface area is increased to enhance oxygen scavenging capability, then the scavenging capacity improves, but the film requires more space on the foil backing
Solution Approach 1:
The invention utilizes the base portion area, which extends laterally beyond the dome portion, to accommodate a larger extruded film for oxygen scavenging. By designing the base portion with increased lateral dimensions, the foil backing area is effectively expanded in the horizontal plane, providing sufficient space for a larger extruded film to be adhered without requiring additional vertical space that would interfere with the blister dome structure.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This configuration increases the surface area for active materials, thereby improving moisture absorption or gas scavenging capabilities, effectively extending the shelf life and preservation of products within the blister pack.
Implementation Method 1
The extruded film can include a desiccant or oxygen scavenger
Implementation Method 2
The extruded film can include a desiccant or oxygen scavenger
Data Source
Figure 1~2
Figure 3~4
Figure 4A~6A
AI summary
A blister pack having a backing having a first side and an opposing second side. Each of the first and second side is flat or planar. The blister pack can also include a cover having a first side and an opposing second side. At least a portion of the second side of the cover is adhered to the first side of the backing to form a sealed package for containing product. The cover can include at least one blister. Each blister can have a dome portion and a base portion. The base portion can surround the dome portion. The base portion can extend outwardly beyond the first side of the cover. The blister pack can also include an active member positioned within the base portion of each blister.