Figure 3: Sample 23: ATR spectra of backing from the exposed side (side 1) and adhesive side (side 2). Note the presence of an acrylate in side 2 (indicated by the peaks at 1736, 1193, and 1165 cm–1).

Figure 3: Sample 23: ATR spectra of backing from the exposed side (side 1) and adhesive side (side 2). Note the presence of an acrylate in side 2 (indicated by the peaks at 1736, 1193, and 1165 cm^–1).

Figure 3 shows the ATR spectra of backing from the exposed side (side 1) and adhesive side (side 2) of tape Sample 23. Note the presence of an acrylate in side 2 (indicated by the peaks at 1736, 1193, and 1165 cm-1).

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Figure 3: Sample 23: ATR spectra of backing from the exposed side (side 1) and adhesive side (side 2). Note the presence of an acrylate in side 2 (indicated by the peaks at 1736, 1193, and 1165 cm–1).

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Figure 3: Sample 23: ATR spectra of backing from the exposed side (side 1) and adhesive side (side 2). Note the presence of an acrylate in side 2 (indicated by the peaks at 1736, 1193, and 1165 cm&ndash;1).

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federal bureau of investigation

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Figure 3: Sample 23: ATR spectra of backing from the exposed side (side 1) and adhesive side (side 2). Note the presence of an acrylate in side 2 (indicated by the peaks at 1736, 1193, and 1165 cm–1).