Composite Safety Glass Separation With Laser Line Heating
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Solution Overview
Problem
Existing methods for separating composite safety glass panels are hindered by long heating times required for plastic deformation and cutting with a knife, delaying the separation process.
Innovation Solution
A laser device with multiple adjacent laser beam sources generates individual intensity profiles, such as laser lines, to heat the composite film along the dividing line, allowing for targeted and efficient heating without damaging the film.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If traditional heating means are used to heat the composite film for plastic deformation and cutting, then the film can be softened and separated, but the heating time becomes very long, delaying the separation process
Solution Approach 1:
The patent replaces traditional mechanical heating means (heating elements, hot plates) with a laser-based heating system. The laser beam directly heats the composite film at the separation line through optical energy conversion to thermal energy, achieving rapid localized heating without the thermal inertia and slow heat transfer characteristics of conventional heating devices.
Solution Approach 2:
The patent transitions from conventional three-dimensional contact heating (heating elements touching or close to the film) to focused beam heating from a different dimension (laser beam focused on the separation line). This allows precise energy delivery to the exact location needing heating, minimizing unnecessary heating of surrounding areas and reducing overall heating time.
2Reliability
If the composite film is heated for extended periods to ensure complete softening, then separation can be achieved, but productivity decreases due to long cycle times
Solution Approach 1:
The patent applies heating locally only at the separation line where the composite film needs to be softened, rather than heating the entire film or panel. The laser beam is focused to a narrow width (typically 0.1-2 mm) centered on the separation line, providing concentrated thermal energy exactly where needed. This localized heating achieves complete softening at the separation line rapidly, ensuring reliable film separation without the prolonged heating times required by conventional methods that heat larger areas.
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 laser-based heating significantly reduces cycle times for the separation process by up to 70%, ensuring precise and efficient separation of composite safety glass panels without unintentional delamination or damage.
Implementation Method 1
the heating means contains at least one laser device that has multiple adjacent laser beam sources. Multiple adjacent individual intensity profiles can be generated with the laser device to heat the composite film at least along one segment of the dividing line.
Data Source
AI summary
An apparatus for separating a composite safety glass panel along at least one pre-definable dividing line, wherein the composite safety glass panel has at least one composite film and at least two glass panels, wherein the composite film is arranged between the glass panels and connects the glass panels to each other, the apparatus having at least one separating device for separating the glass panels along the at least one dividing line and at least one heating device for heating the composite film at least along the dividing line. The heating device has at least one laser device having at least multiple adjacently arranged laser beam sources, wherein multiple adjacently arranged individual intensity profiles for heating the composite film at least along a portion of the dividing line can be produced with the laser device. The invention further relates to a method for separating a composite safety glass panel.