Elastic Layer in RFID Tag Tape for Wrinkle-Free Rolling

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Solution Overview

Problem

Existing RFID tag tapes face issues with maintaining orderliness when wound into a roll, particularly on curved or irregular surfaces, leading to wrinkles and separation problems due to differences in circumferential length.

Innovation Solution

Incorporating an elastic layer in at least one of the tapes within the RFID tag tape structure, allowing for length adjustment to absorb differences in circumferential length, thereby preventing wrinkles and maintaining orderliness during winding and application.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If a tag tape with multilayer structure is wound as a roll, then the RFID labels can be continuously produced and supplied, but wrinkles occur due to difference in circumferential length between outer side and inner side

Engineering Contradiction:

Improvecontinuous production of RFID labelsVSAvoidwrinkles in tag tape

Core Design Contradiction:

ProductivityVSShape

Solution Approach 1:

The patent changes the physical parameter of the separation material layer by using an elastic material that can dynamically adjust its length. This elastic layer absorbs the circumferential length difference between outer and inner sides of the rolled tag tape through elastic deformation, preventing wrinkles while maintaining continuous production capability

Inventive Principle:

Principle #35Parameter changes

Solution Approach 2:

The patent creates a composite structure by combining the elastic material with the bonding adhesive layer and other tape layers. This composite construction allows the separation material layer to provide both adhesive bonding function and elastic compensation for dimensional differences during rolling

Inventive Principle:

Principle #40Composite materials

2Volume of moving object

If the tag tape is wound tightly as a roll to maintain compactness, then storage and handling are improved, but separation and delamination occur between layers

Engineering Contradiction:

Improvecompactness of tag tape rollVSAvoidlayer separation

Core Design Contradiction:

Volume of moving objectVSStability of the object's composition

Solution Approach 1:

The elastic material in the separation material layer changes its physical state through elastic deformation, allowing it to expand and contract with dimensional changes during rolling. This maintains stable bonding between layers despite compression and dimensional variations in the rolled configuration

Inventive Principle:

Principle #35Parameter changes

3Manufacturing precision

If the tag tape structure is made rigid to maintain dimensional stability, then manufacturing precision is improved, but the tape cannot adapt to curved or irregular surfaces

Engineering Contradiction:

Improvedimensional stability of tag tapeVSAvoidadaptability to curved surfaces

Core Design Contradiction:

Manufacturing precisionVSAdaptability or versatility

Solution Approach 1:

The elastic material allows the tag tape to dynamically change its dimensional parameters through elastic deformation. This enables the tape to adapt to curved and irregular surfaces while maintaining manufacturing precision during the production process through controlled elasticity

Inventive Principle:

Principle #35Parameter changes

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 elastic layer effectively prevents wrinkles and maintains the orderliness of the RFID tag tape when wound into a roll and applied to curved or irregular surfaces, ensuring consistent performance and adhesion.

Implementation Method 1

at least one of the first tape and the second tape includes an elastic layer formed of an elastic material... the difference of the circumferential length can be absorbed by lengthening the part on the outer side in the diameter direction or shortening the part on the inner side in the diameter direction using the elasticity of the elastic material

Methodology Applied

Scientific EffectElasticity: Elasticity

Data Source

PatentUS8063741B2Tag tape, tag tape roll, and RFID label

Publication Date: 2011.11.22 BROTHER KOGYO KK

AI summary

This disclosure discloses a tag label producing apparatus comprising: a printing device; a transmitting/receiving device that performs information transmission/reception; a feeding device that feeds said tag medium; a coordination control portion; a communication determining portion that determines whether or not information transmission/reception has succeeded; and a decision portion that decides a feeding-stop condition for stopping feeding based on a feeding condition for the transmission/reception, and a feeding-condition for printing to a print area; wherein: said coordination control portion controls in coordination operations of said feeding device, said transmitting/receiving device, and said printing device so as to stop feeding based on said feeding-stop condition decided by said decision portion and to perform retry of said information transmission/reception when said communication determining portion determines that said information transmission/reception has failed.