Adaptive Tape Closure Device for Variable Bag Neck Diameters
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Solution Overview
Problem
Prior art tape closure systems for plastic bags face challenges due to variations in bag neck diameter, leading to inconsistent tape leg lengths, which complicates printing and user experience.
Innovation Solution
A tape closure device with a guide rail, contact member, and cutting member, along with a tape feed and paper feed assembly, provides a continuous, linear-motion operation to consistently secure the bag neck with adhesive film and non-adhesive backing, allowing for adjustable tape lengths and easy printing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a preset amount of tape is applied to the bag neck, then the closure process is simple and fast, but variations in bag neck diameter cause inconsistent tape leg lengths
Solution Approach 1:
The patent employs a dynamic tape dispensing system where the tape feed mechanism adjusts the amount of tape applied based on real-time detection of bag neck diameter. The system transitions from a static preset amount to a dynamic adaptive amount, allowing the tape legs to remain consistent in length despite variations in bag neck size. This is achieved through feedback control that modifies the tape feed rate or dispensing quantity during the closure process.
2Adaptability or versatility
If the bag neck diameter varies, then different bag sizes can be accommodated, but the tape leg lengths become inconsistent
Solution Approach 1:
The patent implements a feedback control system that detects the actual bag neck diameter and uses this information to adjust the tape dispensing parameters. A sensor measures the bag neck dimensions, and this measurement feeds back to the control system, which then modifies the tape feed amount accordingly. This closed-loop control ensures that tape leg lengths remain uniform across different bag sizes while maintaining versatility in accommodating various packaging dimensions.
3Device complexity
If inconsistent tape leg lengths are produced, then the closure process remains simple, but printing information on the tape becomes difficult
Solution Approach 1:
By implementing dynamic adjustment of tape dispensing based on detected bag neck diameter, the system ensures consistent tape leg lengths that are suitable for reliable printing. The dynamic control mechanism allows the tape application point and leg length to be precisely regulated, creating uniform surfaces that accommodate printing processes effectively while maintaining overall system simplicity through automated control.
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 device ensures a consistent and reliable tape closure that can be repeatedly opened and closed, improving user experience and enabling efficient high-speed packaging operations while allowing for variable tape lengths to accommodate different bag sizes.
Implementation Method 1
a tape closure device for securing the neck of a bag with an adhesive film and a non-adhesive backing
Data Source
AI summary
Disclosed is a tape closure device for securing the neck of a bag with an adhesive film and a non-adhesive backing. The device preferably includes a closure application assembly that has a guide rail, a contact member and a cutting member. The guide rail preferably includes a contact section, a gathering section and a staging section. The contact member preferably includes a contact surface adjacent the contact section of the guide rail. The tape closure device also preferably includes a tape feed assembly, a paper feed assembly and a bag feed assembly.