Blister Packaging Machine Support Belt for Film Sagging
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Solution Overview
Problem
Blister packaging machines face issues with container film sagging during heat treatment, leading to deformation and quality issues in blister packs, especially when preheating temperatures are high for retort sterilization.
Innovation Solution
A blister packaging machine configuration that includes a support belt to synchronize with the container film, providing support from the preheating unit to the pocket portion forming unit, minimizing load and preventing sagging, while allowing for efficient pocket portion formation and separation to maintain film quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the preheating temperature of the container film is set to a high temperature to prevent shrinkage deformation, then the container film can maintain its shape during retort sterilization, but the container film significantly sags by its own weight causing interference with manufacturing devices and lowering blister pack quality
Solution Approach 1:
A support belt is introduced as an intermediary element to support the container film during preheating. The support belt carries the container film through the preheating zone, preventing sagging caused by the film's own weight at high temperatures, while allowing the film to be properly formed and sealed without direct contact with support structures that would interfere with manufacturing devices.
2Ease of manufacture
If the container film is preheated to high temperature to prevent shrinkage, then the film becomes soft and formable, but the sagged container film comes into contact with the pocket portion forming unit and interferes with manufacturing
Solution Approach 1:
The support belt acts as a mediator that holds the softened container film in a controlled position during preheating. This prevents the sagged film from contacting the pocket portion forming unit and other manufacturing devices, eliminating interference while maintaining the film's formability through proper heating.
3Manufacturing precision
If the container film is supported during preheating to prevent sagging, then manufacturing quality is improved, but the support structure increases device complexity
Solution Approach 1:
A flexible support belt is used instead of a rigid support structure. The belt can conform to the container film's shape and provides support exactly where needed during preheating, then can be easily removed or adjusted. This flexible approach improves manufacturing precision while minimizing the complexity of the support 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
The solution effectively prevents container film sagging and deformation, ensuring high-quality blister packs even at high preheating temperatures, enhancing production efficiency and material usage with thin films.
Implementation Method 1
The preheating unit preheats the container film to soften the container film
Implementation Method 2
a support belt configured to move in synchronism with the container film conveyed by the conveying unit, while supporting part of the container film
Implementation Method 3
The pocket portion forming unit forms a pocket portion in the softened container film by, for example, a pressure forming method
Data Source
AI summary
A blister packaging machine manufactures a blister pack including a pocket portion formed in a container film of a belt-like shape and a cover film that closes the pocket portion. The blister packaging machine includes: a conveyor that conveys the container film; a preheater that preheats the container film conveyed by the conveyor; a pocket portion former that forms the pocket portion in the container film softened by the preheater; and a support belt that moves in synchronism with the container film conveyed by the conveyor while supporting a part of the container film other than the pocket portion or a part of the container film other than an area where the pocket portion is to be formed, in at least a location from the preheater to a position downstream of the pocket portion former.