Bag Closure Clip Printing via Free Loop Buffer
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Solution Overview
Problem
Conventional methods for producing bag closure clips do not allow for efficient and high-quality printing of information directly onto the clips during production, resulting in delayed and less uniform printing of product information on bag closure clips.
Innovation Solution
A system and method that integrates a cutting station and a printing station to produce bag closure clips, where the web material is cut into clips, indexed, and then fed through a printing station for precise printing of indicia on the clips, ensuring uniformity and high-quality printing, including multiple colors on both sides, during the production process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If printing is performed after clip production, then clips can be produced continuously at high speed, but printing quality becomes delayed and less uniform
Solution Approach 1:
The patent applies preliminary action by creating a free loop of web material before the printing operation. This allows the printing station to receive pre-cut clips in a controlled manner, enabling high-quality printing while maintaining continuous production. The free loop acts as a buffer that decouples the high-speed cutting process from the printing process, allowing each to operate at optimal speeds without compromising the other.
2Manufacturing precision
If printing is integrated during production, then printing quality and uniformity improve, but process complexity increases
Solution Approach 1:
The patent uses an intermediary approach by introducing a free loop as a mediating element between the cutting station and printing station. This free loop buffer simplifies the overall system control by decoupling the two operations, allowing them to run independently at different speeds while maintaining synchronization. The intermediary buffer reduces the complexity of real-time coordination that would otherwise be required between cutting and printing operations.
3Productivity
If clips are printed immediately after cutting, then production efficiency increases, but printing quality suffers due to lack of indexing
Solution Approach 1:
The system performs preliminary indexing action by creating a free loop that allows individual clips to be positioned and indexed before entering the printing station. This preliminary preparation ensures that each clip is properly aligned and registered for printing, achieving high print quality while maintaining continuous production flow. The free loop enables this preliminary positioning without interrupting the overall production efficiency.
Data Source
AI summary
A system is configured to produce a series of printed clips. The system includes a source of web material, a cutting station, a drive assembly and a printing station. The web material is configured to pass through the system in a machine direction. The cutting station is configured to cut a first portion of the web material into at least a first clip, index the first portion after cutting, and sequentially cut a second portion of the web material into at least a second clip. Cut portions of the web material exit the cutting station in a free loop. A drive assembly is configured to feed web material of the free loop through the printing station at a web speed. The printing station is configured to print indicia on a first surface of the cut portions of the web material.