Prepreg Tape Slitting Apparatus for Simultaneous Width Production

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Solution Overview

Problem

Current methods for producing wide and narrow prepreg slit tapes are labor-intensive, capital-intensive, and result in significant waste and processing downtime due to the need for separate equipment and strict inventory management, with potential material incompatibilities affecting aerospace applications.

Innovation Solution

A method and apparatus for simultaneously producing wide and narrow prepreg slit tapes from a continuous master roll using a single slitting apparatus with dual cutting elements and winding stations, allowing for spool and spindle winding configurations, minimizing waste and processing time, and ensuring minimal differences in material composition and handling.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If separate equipment is used for producing wide and narrow prepreg slit tapes, then each product can be produced with dedicated equipment, but capital costs and device complexity increase significantly

Engineering Contradiction:
Improveproduct qualityVSAvoidequipment configuration
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The slitting apparatus is designed with multiple cutting elements that can be configured to produce both wide and narrow slit tapes from a single master roll. The apparatus includes a first winding station for wide tape and a second winding station for narrow tape, allowing one device to perform multiple functions that previously required separate equipment.

Inventive Principle:
Principle #6Universality (Multi-functionality)

2Ease of manufacture

If separate equipment is used for wide and narrow slit tape production, then each tape type can be processed independently, but processing time and productivity decrease due to sequential operation

Engineering Contradiction:
Improveprocess controlVSAvoidproduction rate
Core Design Contradiction:
Ease of manufactureVSProductivity

Solution Approach 1:

The apparatus enables simultaneous production of wide and narrow slit tapes from a single master roll through parallel processing paths. Both winding stations operate concurrently, eliminating the sequential downtime that occurs when switching between different tape width productions on separate equipment.

Inventive Principle:
Principle #20Continuity of useful action

3Ease of operation

If separate equipment is used for different tape widths, then inventory management becomes simpler, but material waste increases due to inability to maximize master roll consumption

Engineering Contradiction:
Improveinventory managementVSAvoidmaterial waste
Core Design Contradiction:
Ease of operationVSLoss of substance

Solution Approach 1:

The master roll is divided into multiple strips of different widths through the use of multiple cutting elements positioned at different locations. This segmentation allows the entire master roll to be utilized for producing both wide and narrow tapes simultaneously, maximizing material consumption and minimizing waste compared to sequential processing on separate equipment.

Inventive Principle:
Principle #1Segmentation

4Reliability

If separate equipment is used for wide and narrow slit tapes, then material handling can be optimized for each product, but labor intensity and operational complexity increase

Engineering Contradiction:
Improvematerial compatibilityVSAvoidoperational simplicity
Core Design Contradiction:
ReliabilityVSEase of operation

Solution Approach 1:

The apparatus combines the production of wide and narrow slit tapes into a single integrated system where both tapes are produced from the same master roll under identical environmental conditions. This merging ensures material compatibility while reducing operational complexity compared to managing separate equipment and inventory systems.

Inventive Principle:
Principle #5Merging (Combining)

Data Source

PatentEP2841369B1Prepreg tape slitting apparatus and method
Publication Date: 2017.07.26 WEB IND INC
  • EP2841369B1 patent drawingFigure 1~2
  • EP2841369B1 patent drawingFigure 3A~6

AI summary

A method and apparatus is provided for simultaneously producing wide and narrow slit tape from the same master roll.