Label Web Roll With Releasable Adhesive Tabs
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Solution Overview
Problem
Current methods for producing and using rolls of adhesive-backed labels are inefficient due to high hand labor requirements, resulting in unusable first and last labels, and interruptions in the printing process, as the trailing end of the label web cannot be fed through the printer without manual trimming.
Innovation Solution
A roll of label web is designed with longitudinally spaced adhesive-backed labels wound around a tubular core, where the first and last labels are intact, and the trailing end is releasably attached using double-sided adhesive tabs, allowing it to be pulled free for printing, while the leading end is temporarily secured with removable adhesive tabs to prevent damage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If hand operations with tape strips are used to attach the trailing end of the label web to the core, then the label web can be secured during winding, but the first and last labels become unusable and production speed decreases
Solution Approach 1:
The patent extracts the adhesive function from the tape strips and relocates it to the core itself by applying adhesive material directly to the core surface. This eliminates the need for separate tape strips and allows the trailing end to be attached without compromising label integrity or requiring manual trimming operations
Solution Approach 2:
The patent segments the adhesive application area on the core into specific zones: one zone for attaching the trailing end of the label web and another zone for allowing the trailing end to release during printing. This segmentation enables the trailing end to be securely attached during winding but easily released during use, eliminating waste of labels
2Ease of operation
If manual trimming with scissors is used to remove partial labels, then the label web can be properly fed into the printer, but hand labor requirements increase and production efficiency decreases
Solution Approach 1:
The patent performs preliminary action by pre-positioning the trailing end attachment point on the core during the winding process itself. The adhesive zones are prepared in advance on the core, allowing the trailing end to be attached without manual intervention and automatically positioned for later release during printing, eliminating the need for post-winding trimming operations
3Reliability
If the trailing end is permanently attached to the core, then the label web remains secure during winding, but the printing process is interrupted when the end of the roll is reached
Solution Approach 1:
The patent makes the attachment dynamic by creating adhesive zones with different characteristics: one zone maintains strong adhesion during winding while another zone allows easy release during printing. The trailing end transitions from a securely attached state during winding to a easily releasable state during printing, enabling continuous operation without interruptions
4Productivity
If automated cutters are used to sever the label web, then cutting speed increases, but the cut often goes through labels requiring subsequent manual trimming
Solution Approach 1:
The patent performs preliminary action by pre-marking or pre-positioning the exact cut location on the label web before automated cutting occurs. The adhesive zones on the core are positioned such that when the label web is cut at the predetermined location, the trailing end aligns perfectly with the adhesive zone, ensuring complete labels are produced without requiring subsequent manual trimming to remove partial labels
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 configuration allows for efficient production and use of rolls with complete first and last labels, reducing hand labor and minimizing interruptions in the printing process by enabling seamless feeding of the label web through the printer.
Implementation Method 1
The trailing end of the first label web is releasably attached to the core by double-sided releasable adhesive tabs
Implementation Method 2
The leading end of the first label web is temporarily secured to the roll by adhesive tabs that are removable without damaging the first label of the first label web
Data Source
AI summary
A roll of label web and method utilize a length of first label web having a plurality of longitudinally spaced adhesive-backed labels removably attached to a substrate wound around a tubular core in such a manner that a first and last label of the first label web are fully intact and usable. The leading and trailing ends of the first label web are cut between labels. The trailing end of the first label web is releasably attached to the core by double-sided releasable adhesive tabs that allow the trailing end of the first label web to pull free from the core for printing the last label. The leading end of the first label web is temporarily secured to the roll by adhesive tabs that are removable without damaging the first label of the first label web.