Interlocking Insulation Roll Joints for Scrap-Free Splicing
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Solution Overview
Problem
Fabricators in the insulation industry face downtime and scrap losses due to the need for overlapping joints during roll changeovers in insulation production, which increases material thickness and requires longer rolls to minimize splices, leading to inefficiencies and waste.
Innovation Solution
The development of insulation products with nonlinear, interlocking ends that allow for seamless splicing without overlapping, using protrusions and cutouts on one end matching the shape of the other, along with reinforcement members like adhesive tape or glass mat facers to secure the joints, enabling continuous processing and reduced waste.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If overlapping joints are used during roll changeover, then the insulation rolls can be spliced together, but the material thickness increases and scrap is generated
Solution Approach 1:
The insulation roll ends are segmented into interlocking features (protrusions and cutouts) that allow precise mating of adjacent rolls. This segmentation enables the rolls to be joined without overlapping, as each roll has specifically shaped ends that fit together like puzzle pieces, eliminating the need for material overlap and preventing scrap generation while maintaining production continuity.
Solution Approach 2:
The insulation roll ends are designed with asymmetric interlocking features where one roll has a protrusion that fits into a corresponding cutout on the adjacent roll. This asymmetric design allows for precise alignment and joining without requiring overlapping of the roll ends, thereby eliminating material waste while enabling continuous production during roll changeover operations.
2Loss of substance
If longer rolls of insulation are used, then the number of splices is reduced, but the cost and handling complexity increase
Solution Approach 1:
The insulation rolls are designed with standardized interlocking features that enable easy splicing of multiple rolls together. This segmentation allows fabricators to use multiple manageable rolls instead of one extremely long roll, reducing handling complexity while maintaining the benefit of minimal scrap through precise interlocking joints that eliminate overlapping waste.
3Ease of manufacture
If traditional straight-edge ends are used, then the rolls are easy to manufacture, but overlapping joints are required causing thickness increase
Solution Approach 1:
The interlocking features (protrusions and cutouts) are pre-formed on the insulation roll ends during the manufacturing process. This preliminary action allows the rolls to be joined without requiring overlapping, as the pre-shaped ends mate precisely together. The features are created using standard cutting equipment, maintaining ease of manufacture while eliminating the thickness increase problem associated with overlapping joints.
Data Source
Figure 1
Figure 2
Figure 3A~3B
AI summary
An insulation product (100) may include an insulation material. The insulation material (102) may include at least one material selected from the group consisting of nonwoven insulation, aerogel insulation, mineral insulation, and foam insulation. The insulation material may include a first end (104) and a second end (106) positioned opposite the first end. The first end may include a protrusion (110a). At least a portion of the protrusion may widen in a direction opposite the second end. The second end may define a cutout (110b) that substantially matches a size and shape of the protrusion (110a). The cutout and the protrusion may be aligned with one another along a length of the insulation material (102).