Polymeric Surfacing Film Double Outline Cutting

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Solution Overview

Problem

The existing methods for producing polymeric surfacing films are inefficient and time-consuming, particularly in removing excess film after cutting, which can lead to damage and waste of the desired film shapes due to self-healing properties and the need for manual cutting skills.

Innovation Solution

Incorporating a second cut that is spaced apart and congruent with the first cut allows for easy peeling of the excess film, reducing the need for manual removal and minimizing material waste, while also enabling precise cutting and reuse of the remaining film.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If manual cutting and removal methods are used, then the polymeric surfacing film can be processed, but the process is time-consuming and labor-intensive

Engineering Contradiction:

Improveprocessing speedVSAvoidtime for removing excess film

Core Design Contradiction:

ProductivityVSLoss of time

Solution Approach 1:

The patent divides the removal process into two distinct cutting operations: a first cut that defines the geometric shape and a second cut that creates a spaced-apart congruent outline. This segmentation allows the excess film to be easily separated into removable portions, dramatically reducing the time and effort required for the weeding process compared to traditional manual removal methods.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The second cut is performed in advance during the manufacturing process, creating a pre-defined removal path before the actual application of the film. This preliminary action eliminates the need for time-consuming manual weeding later, as the excess film portions are already outlined and ready for easy removal.

Inventive Principle:

Principle #10Preliminary action

2Manufacturing precision

If manual removal of excess film is performed, then the desired film shapes can be obtained, but damage and waste of the desired film shapes occur due to self-healing properties and manual cutting skills requirements

Engineering Contradiction:

Improveaccuracy of film shapeVSAvoidwaste of polymeric film

Core Design Contradiction:

Manufacturing precisionVSLoss of substance

Solution Approach 1:

The second cut acts as an intermediary element that facilitates the separation of excess film from the desired geometric shapes. By creating this intermediate outlined portion, the patent enables clean separation without requiring manual cutting skills that could damage the desired film shapes or cause waste due to self-healing properties.

Inventive Principle:

Principle #24Intermediary (Mediator)

Solution Approach 2:

The spaced-apart congruent outline structure allows the excess film to be easily self-removed or peeled away without complex manual intervention. The outlined portions can be cleanly separated by simply pulling or peeling, eliminating the need for skilled manual cutting and reducing damage to the desired film shapes.

Inventive Principle:

Principle #25Self-service

3Ease of manufacture

If a single cut defining the geometric shape is used, then the film can be cut to shape, but the excess film removal process is inefficient and wasteful

Engineering Contradiction:

Improvesimplicity of cutting processVSAvoidwaste of excess film

Core Design Contradiction:

Ease of manufactureVSLoss of substance

Solution Approach 1:

The patent segments the film structure by creating a second congruent outline spaced apart from the first cut. This segmentation divides the excess film into distinct removable portions, allowing for efficient removal with minimal waste. The structured division makes it easy to identify and remove only the necessary excess material while preserving the desired geometric shapes.

Inventive Principle:

Principle #1Segmentation

4Adaptability or versatility

If traditional cutting methods are used, then the geometric shapes can be cut, but multiple shapes on a single sheet cannot be easily separated

Engineering Contradiction:

Improveability to handle multiple shapesVSAvoidcomplexity of separation process

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

By creating spaced-apart congruent outlines around each geometric shape, the patent automatically segments multiple shapes on a single sheet into independently removable units. Each shape with its surrounding outlined portion can be easily separated from the sheet and from other shapes, simplifying the handling and application process for multiple geometric shapes.

Inventive Principle:

Principle #1Segmentation

Data Source

PatentUS11235555B2Polymeric surfacing film having double outline defining geometric shapes therein

Publication Date: 2022.02.01 3M INNOVATIVE PROPERTIES CO

AI summary

According to various examples, an assembly can include a backing. The assembly can also include a polymeric surfacing film adhered to the backing, the polymeric surfacing film. The polymeric surfacing film can include a first geometric shape. The polymeric surfacing film includes a continuous first cut defining the geometric shape and a continuous second cut spaced apart from and substantially congruent with the continuous first cut in at least one of an x and y direction. A portion of the polymeric surfacing film, located between the first cut and the second cut, is removable from the backing. According to some examples, the assembly can provide certain benefits over state of the art assemblies. For example, according to some examples, providing the first and second cut can make removal of at least the first geometric shape to be quicker and easier, which can result in significant savings in time and wasted materials.