Multi-layer Shingle Manufacturing via Single-pass Adhesive Lamination
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Solution Overview
Problem
The roofing industry faces inefficiencies in manufacturing multi-layered shingles due to complex processes that often require twisting strips and the use of multiple adhesive applicators, increasing the risk of adhesive sticking to unwanted surfaces.
Innovation Solution
A system and method for manufacturing multi-layer shingles that involves applying a laminating adhesive to a continuous sheet of shingle material in the form of parallel strips, cutting it into longitudinal pieces, and laminating them together without twisting, using a single adhesive applicator and cutting station to form a laminated shingle blank that is at least three layers thick, with interdigitated tabs cut for individual shingles.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If strips are separated, adhesive applied, and strips vertically stacked and laminated using two self-contained individual laminators or by twisting strips upside down, then multi-layer shingles can be formed, but the manufacturing process becomes complicated and adhesive may stick to unwanted surfaces
Solution Approach 1:
The patent combines multiple laminating functions into a single laminating device. The continuous sheet is fed through one laminating device where adhesive is applied to specific areas, and the sheet is laminated to itself in a single pass, eliminating the need for two separate laminators and reducing process complexity
Solution Approach 2:
The patent applies adhesive to specific areas of the continuous sheet before lamination occurs. The adhesive is applied in advance to designated regions, and subsequent lamination presses these adhesive areas to bond layers together, preventing adhesive from contacting unwanted surfaces during the process
2Productivity
If a continuous sheet is cut into longitudinal pieces after adhesive application, then multi-layer shingles can be formed with a single adhesive applicator, but adhesive may stick to cutting surfaces
Solution Approach 1:
The adhesive is applied to specific areas of the continuous sheet before cutting occurs. By pre-positioning adhesive only where needed and protecting or avoiding those areas during cutting, the patent prevents adhesive from sticking to cutting surfaces while maintaining manufacturing efficiency
Solution Approach 2:
The patent applies adhesive only to specific local areas of the continuous sheet rather than the entire surface. This localized adhesive application ensures that adhesive is present only where bonding is required, minimizing the risk of adhesive contacting cutting surfaces or unwanted 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
This approach simplifies the manufacturing process, reduces the risk of adhesive sticking, and produces durable, weatherproof multi-layer shingles with a single adhesive applicator, enhancing efficiency and reducing production costs.
Implementation Method 1
an adhesive applicator configured to apply a laminating adhesive to a surface of the sheet
Data Source
AI summary
In an exemplary embodiment, a shingle manufacturing system comprises an entry pull roll for providing a substantially continuous sheet comprising shingle material, an adhesive applicator for applying a laminating adhesive to a surface of the sheet, and a cutting station for cutting the sheet, now carrying the laminating adhesive, into at least three longitudinal pieces.