ABSTRACT:A large research program of digital product process has been active (2008)(2009)(2010)(2011)(2012) in Finland. The goal of the program has been to increase customer orientation and productivity in company networks that design and deliver products, systems and services to global markets. For small and medium sized companies the developing of multitechnical products usually has to be done in a network of companies. This requires a lot of data transfer and integration between various computer systems. To improve these processes the research project "Developing the digital product process of multitechnical products to improve the designing and manufacturing of small series product" (Monidigi) has been started.The aim of the Monidigi research was to improve the design process by using solely digital product information that is handled by proper product lifecycle management systems. The product development is guided by the philosophy of the digital prototype that is tested in a virtual working environment. Products are modeled in 3D and developed by various simulations and analyses before real prototypes are made. This allows a flexible design process and coordinated change management. Digital product processes allow easy data transfer, collaborated engineering and modern manufacturing in a network of companies. Several examples and development possibilities and the state of the art in construction industry are introduced and evaluated.

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Nanocelluloses and their different designs, such as films and nanopapers, have gained considerable interest in many application areas due to their unique properties. For many purposes, such as for packaging and electronics, the thermal stability of nanocellulose materials is a crucial characteristic. In this study, the effects of heat treatment (100ºC, 150ºC and 200ºC) on the optical and mechanical properties of 2,2,6,6-tetramethylpiperidinyl-1-oxy radical-oxidised cellulose nanofibre (TO-CNF) films were investigated, especially the alteration of the colour, complex refractive index and birefringence of the films. Exposing TO-CNF films to high temperatures (> 150ºC) induced permanent transformations in the CNF structure, leading to an increase in the refractive index, decreases in the birefringence and crystallinity index, colour darkening and significant deterioration of the mechanical properties.