Self-starting Adhesive Roll with Exposed End

Resolve Bottlenecks,
Find Innovative SolutionsGenerate Solutions

Solution Overview

Problem

Conventional systems for unwinding surface protection films and tapes often struggle to accurately identify the start of a roll, leading to frustration and inefficiency, especially with sticky carpet films where marker strips are ineffective.

Innovation Solution

A system comprising an adhesive layer, a protective film layer fused to one side, and a cover layer fused to the other side, where the adhesive layer faces outwardly from the center of the roll, allowing for easy identification and unwinding without a marker strip, and the cover layer provides a non-adhesive exterior for easy handling.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Measurement precision

If a marker strip is used to identify the start of a roll, then the start position can be located, but the marker strip is often ineffective and causes user frustration

Engineering Contradiction:

Improvestart position identificationVSAvoidunwinding operation

Core Design Contradiction:

Measurement precisionVSEase of operation

Solution Approach 1:

The invention removes the marker strip entirely and extracts only the essential function of identifying the start position by using the natural structural features of the roll (adhesive layer facing outward at the exterior end portion), eliminating the ineffective marker strip that caused user frustration

Inventive Principle:

Principle #2Taking out (Extraction)

Solution Approach 2:

The roll structure itself provides the identification function through its construction - the adhesive layer facing outward at the exterior end portion naturally indicates the start position, making the system self-identifying without requiring separate marker strips

Inventive Principle:

Principle #25Self-service

2Ease of operation

If the adhesive layer is exposed at the exterior end portion of the roll, then unwinding can be easily started, but accidental adhesion may occur

Engineering Contradiction:

Improveunwinding initiationVSAvoidaccidental adhesion

Core Design Contradiction:

Ease of operationVSObject-affected harmful factors

Solution Approach 1:

The adhesive layer is positioned to face outward only at the exterior end portion of the roll (local exposure), while the rest of the adhesive layer remains protected by the cover layer, providing ease of unwinding initiation at the start position while preventing accidental adhesion elsewhere

Inventive Principle:

Principle #3Local quality

Solution Approach 2:

The adhesive layer's exposure is segmented - only the portion at the exterior end portion is exposed to enable start identification, while the remainder is covered, creating distinct functional zones that prevent unwanted adhesion

Inventive Principle:

Principle #1Segmentation

3Object-affected harmful factors

If a cover layer is added to protect the adhesive layer, then accidental adhesion is prevented, but the structure becomes more complex

Engineering Contradiction:

Improveaccidental adhesion preventionVSAvoidroll structure

Core Design Contradiction:

Object-affected harmful factorsVSDevice complexity

Solution Approach 1:

The cover layer is merged with the roll structure itself, forming an integrated protective assembly where the cover layer, adhesive layer, and substrate work together as a unified system, preventing accidental adhesion without adding separate complex components

Inventive Principle:

Principle #5Merging (Combining)

Data Source

PatentUS11608240B2System, apparatus, and method for unwinding a roll

Publication Date: 2023.03.21 GLOBAL FILM SOURCE LLC

AI summary

An assembly is disclosed. The assembly has an adhesive layer, a protective film layer that is fused to a first side of the adhesive layer along a first length, and a cover layer that is fused to a second side of the adhesive layer along a second length. The first length is longer than the second length. The adhesive layer is wound in a roll. The second side of the adhesive layer faces outwardly from a center of the roll.