Roller Apparatus for Bubble-Free Protective Film Application

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Solution Overview

Problem

Existing methods for applying protective films to electronic devices are messy and require waiting for the solution to dry, which can take 24-48 hours, and may leave air bubbles that can take time to dissipate, making the device unusable during this period.

Innovation Solution

A roller apparatus is used to apply protective films to electronic devices without the need for a wet fluid solution, featuring a carriage with rollers and a splitter to separate the film from its backing, allowing for immediate application and bubble removal in a single motion.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If a wet fluid solution is used to apply the protective film, then the film can adhere to the electronic device, but the application process becomes messy and requires waiting 24-48 hours for the solution to dry

Engineering Contradiction:

Improvefilm adhesionVSAvoiddrying time

Core Design Contradiction:

ReliabilityVSLoss of time

Solution Approach 1:

The patent extracts and removes the wet fluid solution from the application process entirely. Instead of using a liquid adhesive solution that requires drying time, the invention employs a dry adhesive layer pre-applied to the protective film, eliminating the need for wet solutions and the associated waiting period.

Inventive Principle:

Principle #2Taking out (Extraction)

Solution Approach 2:

The patent replaces the chemical bonding mechanism (wet fluid solution requiring evaporation and drying) with a mechanical adhesive system (pre-applied dry adhesive layer that bonds immediately upon contact). This substitution eliminates the drying phase and allows immediate use of the device.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

2Reliability

If a wet fluid solution is used to apply the protective film, then the film can be applied to the surface, but air bubbles are trapped and require time to dissipate

Engineering Contradiction:

Improvefilm applicationVSAvoidair bubbles

Core Design Contradiction:

ReliabilityVSObject-generated harmful factors

Solution Approach 1:

The patent applies adhesive properties preliminarily to the protective film before the application process. The dry adhesive layer is pre-coated on the film during manufacturing, so when the film is applied to the device, the adhesive is already in position and ready to bond immediately, preventing air bubble entrapment.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The patent introduces a splitter as an intermediary tool that facilitates the application process. The splitter helps guide the protective film onto the device surface and systematically removes air bubbles as the film is applied, ensuring a bubble-free finish.

Inventive Principle:

Principle #24Intermediary (Mediator)

3Reliability

If a wet fluid solution is used, then the protective film can be applied, but the device cannot be used during the drying period of 24-48 hours

Engineering Contradiction:

Improvefilm adhesionVSAvoiddevice usability

Core Design Contradiction:

ReliabilityVSEase of operation

Solution Approach 1:

The patent extracts the wet drying phase from the application process by using a dry adhesive system. This eliminates the 24-48 hour waiting period during which the device would be unusable, allowing immediate operation of the device after application.

Inventive Principle:

Principle #2Taking out (Extraction)

Solution Approach 2:

The patent enables continuous useful action by allowing the device to be used immediately after the protective film is applied. The dry adhesive system provides immediate bonding without requiring a drying period, so the device remains operational throughout the process.

Inventive Principle:

Principle #20Continuity of useful action

4Reliability

If traditional film application methods are used, then the protective film can be applied, but the process is messy and requires squeegeeing excess solution

Engineering Contradiction:

Improvefilm applicationVSAvoidapplication process

Core Design Contradiction:

ReliabilityVSEase of operation

Solution Approach 1:

The patent extracts and eliminates the wet fluid solution from the application process. By using a dry adhesive layer pre-applied to the protective film, there is no excess liquid to squeegee or clean up, making the process clean and simple.

Inventive Principle:

Principle #2Taking out (Extraction)

Solution Approach 2:

The patent introduces a splitter as an intermediary tool that simplifies the application process. The splitter guides the film onto the device and systematically removes air bubbles, eliminating the need for messy squeegeeing operations.

Inventive Principle:

Principle #24Intermediary (Mediator)

Data Source

PatentUS9918418B2Protective material applicator device

Publication Date: 2018.03.13 SUPERIOR COMMUNICATIONS INC

AI summary

Devices, methods and systems disclosed herein relate to the application of a protective film on a surface of an electronic device that instantly reduces air bubbles and eliminates the waiting time usually required when using a wet fluid solution. In one embodiment, a roller apparatus may be used to apply the protective film on the surface of the electronic device. The roller apparatus may include an opening for receiving a display peg.