Heat-Shrinkable Sleeve Labeling Apparatus with Suction Positioning
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Solution Overview
Problem
Existing sleeve label application systems face challenges in ensuring precise positioning and uniform heat-shrinking of heat-shrinkable plastic labels on containers due to diameter differences, leading to rotation, translation, and uneven heating, which affects the anti-tampering features and quality of the labels.
Innovation Solution
An apparatus that simultaneously applies and positions heat-shrinkable plastic labels on containers using a continuous flow mode, featuring a bell with a thermal vector fluid chamber and controlled motion of disk and opening elements to achieve precise positioning and uniform heating, reducing the diameter difference and thermal fluid usage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the diameter of the sleeve label is made much larger than the maximum diameter of the container to facilitate insertion, then the ease of operation is improved, but the manufacturing precision deteriorates due to label rotation and translation during movement
Solution Approach 1:
The patent replaces the traditional mechanical conveyor belt system with a suction-based holding system. The application head uses suction cups to grip the container and label assembly, eliminating mechanical contact that causes rotation and translation. This substitution maintains precise positioning while facilitating easy label insertion through the oversized diameter approach.
Solution Approach 2:
The patent introduces an intermediary holding mechanism (suction cups on the application head) between the label application process and the container movement. This intermediary system maintains the label's positional relationship with the container during transfer, preventing rotation and translation while allowing the label to be applied through the oversized diameter method.
2Ease of operation
If the diameter difference between sleeve label and container is increased to ease label insertion, then the ease of operation is improved, but the manufacturing precision deteriorates due to uneven heat-shrinking and material plasticization
Solution Approach 1:
The patent employs a dynamic heating system where the heating elements are positioned and controlled to adapt to the specific geometry of the container and label assembly. The heating system dynamically adjusts its thermal distribution to compensate for the large diameter difference, ensuring uniform heat-shrinking across the entire label surface despite the increased material volume that needs to be plasticized.
Solution Approach 2:
The patent applies local quality by varying the heating intensity and distribution across different zones of the label. Areas with greater material volume or different thermal requirements receive adjusted heating parameters, ensuring that the entire label shrinks uniformly to the container surface despite the large initial diameter difference between label and container.
3Productivity
If the tunnel length is increased to maintain constant heat exposition time while increasing manufacturing rate, then the productivity is improved, but the device complexity and energy consumption increase
Solution Approach 1:
The patent implements a continuous labeling system where containers move through the labeling and heating process without interruption. The application head and heating elements are positioned to work continuously on moving containers, maintaining constant heat exposition time while increasing throughput. This continuous action allows higher manufacturing rates without requiring proportionally longer tunnel lengths, as the process is optimized for continuous operation rather than batch processing.
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 apparatus ensures precise label positioning and rapid, uniform heat-shrinking, reducing thermal fluid consumption and shrinking time, improving label quality and manufacturing efficiency while maintaining anti-tampering features.
Implementation Method 1
heat-shrinkable plastic material that, after having being put about the containers, they are shrunken by administering heat
Implementation Method 2
administering a suitable heat amount, causing shrinking of plastic material, that consequently deforms and, shrinking, takes the shape of the same container
Data Source
Figure 1
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Figure 5~6
AI summary
The invention relates to an apparatus for applying sleeve labels comprised of heat-shrinkable plastic material, comprising at least a station (1) providing an opening element (7) for a sleeve label (5) arriving from an application head and for putting said sleeve label (5) about the body of an object (4), an element or dish element (6) for displacing said object (4) from a first supply position to a second position, within a hollow cylindrical body or bell (3) having a vertical axis, and with an opening for inlet of said object (4) and said sleeve label (5) and at least an opening (18) for inlet of a thermal vector fluid, for shrinking said label (5) about said object (4).