Resin Container Laser Marking Alignment
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Solution Overview
Problem
Existing resin container manufacturing methods face challenges in achieving high visibility and quality, particularly when laser marking is performed on preforms, as the pattern quality decreases during blow molding, and the process is costly and inefficient for forming high-definition marks with optimal visibility.
Innovation Solution
A method and apparatus for forming a first pattern on the neck or body portion of a preform, followed by forming a second pattern based on the first pattern during preform processing, and a third pattern on the resin container after blow molding, ensuring optimal visibility and alignment without overlapping, using devices like laser marking and low-cost optical devices for precise positioning.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If laser marking is performed on the preform to increase productivity, then manufacturing efficiency is improved, but the pattern quality and definition deteriorate
Solution Approach 1:
The patent applies preliminary action by forming a first pattern on the preform before blow molding to establish positioning reference, and then forming additional patterns on the finished container. This allows the positioning function to be performed early in the process while the final high-quality patterns are added later, resolving the conflict between early marking efficiency and final pattern quality.
Solution Approach 2:
The patent segments the pattern formation process into multiple stages: first pattern formation on the preform for positioning, and second pattern formation on the finished container for high-quality output. This segmentation allows each stage to optimize for its specific purpose, with the first pattern providing positioning reference and the second pattern delivering high-definition results.
2Manufacturing precision
If the mold is changed to add a notch for position information to improve visibility, then pattern visibility is improved, but manufacturing cost increases
Solution Approach 1:
The patent uses the first pattern as a reference copy to determine the circumferential position for forming the second pattern. By copying the positional information from the first pattern formed on the preform, the system achieves high visibility without requiring expensive mold modifications or additional notches.
3Manufacturing precision
If pattern formation is performed after blow molding to improve definition, then pattern quality is improved, but productivity decreases
Solution Approach 1:
The patent performs preliminary action by forming the first pattern on the preform before blow molding to establish positioning reference. This preliminary positioning enables subsequent high-definition pattern formation on the finished container without requiring repositioning or additional alignment steps, thereby maintaining productivity while achieving high pattern quality.
4Measurement precision
If a complex recognition system is used to ensure precise pattern alignment, then positioning accuracy is improved, but device complexity increases
Solution Approach 1:
The patent applies self-service by using the first pattern itself as the reference for positioning the second pattern. The first pattern formed on the preform automatically provides the circumferential position information needed for accurate alignment, eliminating the need for external recognition systems or complex measurement devices.
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 approach enhances the visibility and quality of patterns on resin containers by maintaining the aspect ratio and positional accuracy, reducing costs through the use of low-cost optical devices and eliminating the need for complex recognition systems, while ensuring non-overlapping patterns for improved consumer perception.
Implementation Method 1
forming a first pattern at a first position in a preform
Implementation Method 2
laser marking on a preform has been known
Data Source
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AI summary
A resin container manufacturing method includes: forming a first pattern (S1) on a preform (30) of a resin container (40) having a body portion (15) and a neck portion (16), the first pattern (11) being formed on at least one of the neck portion (15) or a portion of the body portion (16) closer to the neck portion (15); forming a second pattern (S2) on the preform (15) based on a position of the first pattern (11) on the preform (15); and forming a third pattern (S4) on the resin container (40) based on the position of the first pattern (11).