## 3 Results and Discussion
### Control
\begin{table}
\begin{tabular}{c c c c c c} \hline \hline
**Category** & **Causes** & **Action** & **Involved** & **Result/Cost** & **Time** \\ \hline \multirow{4}{*}{Methods} & Production & MP production and procurement plan & Planning and Purchasing & Gant diagrams. & \multirow{4}{*}{3–6 months} \\  & programming & Demand for updated & Purchasing & & & \\  & & & & & \\  & sales forecasts & Commercial & & & \\ \cline{2-6}  & Standardization & Specific working & & & & \\  & manufacturing & instructions & & & \\  & procedures & & & & \\ \hline \multirow{4}{*}{Facilities} & Equipment & Specific preventive maintenance plan & Maintenance & Technical services & \multirow{4}{*}{3–6 months} \\  & availability & & & & & \\ \cline{2-6}  & Timetable with & & & & \\  & prioritization of productions & Production & Production & & \\ \hline \multirow{4}{*}{Staff} & Appropriate staff & Training on product handling and time & & & \\  & training & management & & & \\  & & & & & \\ \cline{2-6}  & Precise raw & Training in handling & Production and & & \\  & materials handling & measuring equipment & Human Resources & & \\  & & & & & \\ \hline \multirow{4}{*}{Environment} & Workspace layout & Elimination of obstacles & Production & & & \\  & Tidiness of the work area & Production & & & \\  & & & & & \\ \cline{2-6}  & Delimit a suitable & & & & \\ \cline{2-6}  & and specific area & Raw materials location area & Maintenance & & & \\ \cline{2-6}  & for raw materials & Regular audits & Maintenance & & & \\ \hline \multirow{4}{*}{Materials} & Reduce variability & Choice of raw materials & & & & \\  & of raw materials & whose variability in & & & \\ \cline{1-1}  & composition & composition is \textless{}2\% & & & \\ \cline{1-1}  & & & & & \\ \hline \multirow{4}{*}{Measurement} & Verification of measurement & Establish a program for the adjustment and calibration & Quality & & & \\ \cline{1-1}  & equipment & of measuring equipment & Quality & & \\ \hline \hline \end{tabular}
\end{table} 
Table 8: Actions taken following the Ishikawa diagram analysis. \begin{table}
\begin{tabular}{c c c c} \hline \hline
**Test** & \(\mathbf{D_{1R}}\)’ & \(\mathbf{D_{1T}}-\mathbf{D_{1R}}\)’ & \(\mathbf{Y_{11R}}\)’ \\  & \(\mathbf{kg}\)/L & \(\mathbf{kg}\)/L & \(\mathbf{kg}\)\(\mathbf{C_{11}}\)/\(\mathbf{kg}\)\(\mathbf{T}\) \\ \hline
1 & 1.200 & 0.000 & 0.049 \\
2 & 1.215 & \(-\)0.015 & 0.053 \\
3 & 1.220 & \(-\)0.020 & 0.054 \\
4 & 1.199 & 0.001 & 0.051 Where \(\rm D_{IR}\)' is the experimental density, \(\rm Y_{11R^{\prime}}\) is the measured composition of the main ingredient in \(\rm P_{1}\), and \(\rm D_{1T}-D_{1R^{\prime}}\) is the difference between the theoretical and experimental density values for product \(\rm P_{1}\). \begin{table}
\begin{tabular}{c c c c} \hline \hline
**Test** & \(\rm\bf D_{3R}\)**\({}^{\prime}\)** & \(\rm\bf D_{3T}-D_{3R}\)**\({}^{\prime}\)** & \(\rm\bf Y_{31R^{\prime}}\) \\  & **kg/L** & **kg/L** & **kg C31/kg T** \\ \hline
1 & 1.140 & 0.010 & 0.043 \\
2 & 1.165 & \(-\)0.015 & 0.045 \\
3 & 1.150 & 0.000 & 0.044 \\
4 & 1.155 & \(-\)0.005 & 0.047 \\
5 & 1.175 & \(-\)0.025 & 0.049 \\
6 & 1.160 & \(-\)0.010 & 0.047 \\
7 & 1.166 & \(-\)0.016 & 0.046 \\
8 & 1.170 & \(-\)0.020 & 0.048 \\
9 & 1.152 & \(-\)0.002 & 0.044 \\
10 & 1.160 & \(-\)0.010 & 0.045 \\
11 & 1.145 & 0.005 & 0.043 \\ \hline \hline \end{tabular}
\end{table} 
Table 10: Experimental values derived from the production of \(\rm P_{3}\). Figure 5: Initial layout of the material storage and operation areas (**a**) and the final disposition after improvement actions (**b**). \begin{table}
\begin{tabular}{c c c c} \hline \hline
**Test** & \(\rm\bf D_{IR}\)**\({}^{\prime}\)** & \(\rm\bf D_{1T}-D_{1R}\)**\({}^{\prime}\)** & \(\rm\bf Y_{11R^{\prime}}\) \\  & **kg/L** & **kg/L** & **kg C11/kg T** \\ \hline
9 & 1.220 & \(-\)0.020 & 0.053 \\
10 & 1.215 & \(-\)0.015 & 0.053 \\
11 & 1.195 & 0.005 & 0.050 \\
12 & 1.198 & 0.002 & 0.051 \\
13 & 1.200 & 0.000 & 0.050 \\
14 & 1.212 & \(-\)0.012 & 0.052 \\
15 & 1.210 & \(-\)0.010 & 0.052 \\ \hline \hline \end{tabular}
\end{table}