A very promising approach to increase productivity, quality and competitiveness approach of information systems development is the reuse and development of a family of systems guided by Product Line (PL) practices. One of the main goals of PL engineering is to develop a model that represents the family of products (product line model PLM), which is then customized to configure individual products. The successful definition of PLMs that accurately represents the information in the requirement specifications still depends heavily on the intuition and experience of the software architect. Our work provides assistance for this process. We have developed a semi-automated method to construct product line models based on collection of related artifacts or existent products models as a result of a feature mining process. The approach is evaluated using bill of material as a collection of product models to develop and construct a constraint based PLM. The performance of our method is calculated by estimating the time complexity and constructing the PLM for different random samples of 536 products in Baxter Bioscience. More than 92% of the relationships are properly predicted only by using 75% of the total available products.