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Wednesday, July 31, 2013

Film embossing process

Film embossing is a mechanical process in which a flat film is transformed into an embossed product. During the process, thermal and stress fields are applied to the polymer, causing changes in the microstructure and physical dimensions of the material. The engineering analysis of the process requires the study of various aspects relating to the characterization of the microstructure before and after embossing, A variety of techniques were employed to characterize the properties and microstructure of the embossed film in relation to crystallinity, orientation, mechanical properties, and dimensions of the embossed films. The thermal treatment of the polymer film was shown to be the most significant factor in the process. By controlling the thermal treatment of the film, it is possible to manipulate the properties and dimensions of the embossed film.

 The important aspects: influencing thermal treatment include the radiation heater temperature, preheat roll temperature, line velocity, and film thickness. The initial film orientation and embossing pressure have a minor effect on the final properties of the embossed film. The main effect of the embossing pressure is on the bulk thickness of the embossed film.

Monday, July 8, 2013

 Packaging is the technology of enclosing or protecting products for distribution, storage, sale, and use. It also refers to the process of design, evaluation, and production of packages. Packaging contains, protects, preserves, transports, informs, and sells. It is a barrier from oxygeb, water vapour, dust, etc. Packages can have features that add convenience in distribution, handling, stacking, display, sale, opening, reclosing, use, dispensing, reuse, recycling, and ease of disposal.  Keeping the contents clean, fresh, sterile and safe for the intended shelf life is a primary function.

 Package development involves considerations for sustainability, environmental responsibility, and applicable environmental and recycling regulations. It may involve a life cycle assesment which considers the material and energy inputs and outputs to the package, the packaged product (contents), the packaging process, the logistics system,waste management, etc. It is necessary to know the relevant regulatory requirements for point of manufacture, sale, and use. The traditional “three R’s” of reduce, reuse, and recycle are part of waste hierarchy which may be considered in product and package development.