Dissertations / Theses on the topic 'Plastic window'

Thesis (MBA)--Stellenbosch University, 2003.
ENGLISH ABSTRACT: The South African business environment is undergoing drastic changes. Unemployment is on the increase, globalisation is becoming a serious factor to contend with, competition in many industries is increasing and the South African government is pursuing more international investments. All these factors contribute to these changes. Many companies are rationalising to ensure competitiveness within the South African economy and to ensure that products are competitive with international brands entering South Africa. Increasing unemployment in South Africa is forcing individuals to develop an entrepreneurial spirit. The only method to curb this wave of unemployment is to invest in a small to medium size enterprise. Entrepreneurs in the USA have permanently altered the economy of the USA in the past 30 years. It is felt that this entrepreneurial spirit will also change the South African economy in years to follow. This research project analysed and discussed the window of opportunity for a small to medium size enterprise manufacturing plastic wrapping. The Plastics Industry Analysis Framework was developed to ensure a comprehensive insight into the plastics industry of South Africa. This framework is the combination of the Five Forces Model of Competition and the General Framework for an Industry Analysis, both developed by Michael Porter. The research found that the plastics industry is currently undergoing drastic changes, specifically in regard to South African legislation. It was also found that the plastics industry historically grew by 5% per annum, however, in recent years this growth was negative. Since 1998 the plastics industry reduced in size by 7,1%. Legislation in regard to plastic bags has had a major impact on the plastics industry. The research found that nearly 2000 additional jobs have been lost. The research found that the window of opportunity for a small to medium size plastic wrapping enterprise is limited. The effect of the new legislation on plastic bags is not clearly known, however, it has already negatively influenced the plastics industry. Opportunities do exist within other market sectors of the plastics industry of which recycling and export market sectors are prime examples. Future opportunities within the plastics industry will have to be carefully analysed to ensure success of any new venture.
AFRIKAANSE OPSOMMING: Die Suid-Afrikaanse sake-omgewing ondergaan tans drastiese veranderinge. Verhoogde vlakke van werkloosheid, die bedreiging van globalisering, die kompetisie tussen industrieë, sowel as die Suid-Afrikaanse regering se strewe na internasionale beleggings, dra alles by tot hierdie veranderinge. Suid-Afrikaanse maatskappye rasionaliseer nie nét om kompeterend te bly binne die Suid-Afrikaanse ekonomie nie, maar ook dat hulle produkte kompeterend moet wees teenoor internasionale handelsmerke wat Suid-Afrika binnekom. Die verhoogde vlakke werkloosheid forseer individue om 'n entrepreneuriese denkwyse te ontwikkel. Belegging in 'n klein tot medium grootte besigheid is die enigste manier om werkloosheid teen te werk. Entrepreneurs in die VSA het dié land se ekonomie in die laaste 30 jaar permanent verander. Daar word gespekuleer dat hierdie entrepreneuriese denkwyse in die toekoms kan bydra tot veranderinge in die Suid-Afrikaanse ekonomie. Hierdie studie het die geleentheidsvenster van 'n klein tot medium grootte vervaardiger van plastiekfilm ondersoek. 'n Analitiese raamwerk is ontwikkel om 'n volledige begrip van die Suid-Afrikaanse plastiekbedryf daar te stel. Die raamwerk is saamgestel uit navorsing van Michael Porter, met spesifieke verwysing na kompetisie binne industrieë en 'n algemene raamwerk om industriëe te analiseer. Die ondersoek het getoon dat die plastiekbedryf tans drastiese veranderinge ondergaan, met verwysing spesifiek na Suid-Afrikaanse wetgewing. Histories het die plastiekbedryf jaarliks met 5% gegroei, maar negatiewe groei is die afgelope jare waargeneem. Sedert 1998 het die plastiekbedryf met 7,1% in grootte gekrimp. Wetgewing, met betrekking tot plastieksakke, het 'n groot impak op die plastiekbedryf gehad. Navorsing het getoon dat ongeveer 2000 bykomende werkgeleenthede verlore gegaan het. Die ondersoek het bewys dat die geleentheidsvenster vir die klein tot medium grootte plastiekfilm vervaardiger, beperk is. Hoewel die totale uitwerking van die nuwe wetgewing op plastieksakke nog onbekend is, is daar reeds 'n negatiewe tendens in die plastiekbedryf waargeneem. Geleenthede bestaan egter in verskeie ander marksektore binne die plastiekbedryf waarvan herwinning- en uitvoermarksektore voorbeelde is. Deeglike analise van geleenthede in die plastiekbedryf kan sukses in 'n toekomstige besigheid verseker.

This master’s thesis focuses on rationalization of production line for plastic windows production in RI OKNA a.s. (Inc.). Evaluation of production line’s current estate is being done as well as weak point detection. On these bases some new variations for improvement are being suggested. The winning variation is drown up into the technological project and put through an economical evaluation.

The subject of this diploma thesis is a newly built mixed-use building in Brno. It is a four-storey building without cellar. The building is located on a corner plot in an urban part of Brno - Židenice. In the 1st floor there are three business units. On the other floors are a total of 11 apartments. One apartment is located in the courtyard. It is designed for people with limited mobility. The vertical structures are of the ceramic blocks Porotherm. Ceiling structures and staircases are cast-in-place reinforced concrete. The building is insulated with contact insulation system ETICS. The roof is warm flat. The project was processed by computer software AutoCAD 15.

This diploma thesis deals with plastic windows semi-automatic production line in the company RI-Okna. The system of storage, handling and weaknesses of the production line are described. The solution is fleshed out into a technological project, including economic evaluation and technical drawings.

Thesis (M.S.)--University of Missouri-Columbia, 2007.
The entire dissertation/thesis text is included in the research.pdf file; the official abstract appears in the short.pdf file (which also appears in the research.pdf); a non-technical general description, or public abstract, appears in the public.pdf file. Title from title screen of research.pdf file (viewed on March 27, 2008) Includes bibliographical references.

The aim of the diploma thesis is to elaborate the project documentation of the sports hall in the town of Bystřice nad Pernštejnem. The object is situated in an area with several other sports grounds. The building is partially basement with one overground floor. On the first floor there is a large and small gym, a fitness room and two massage rooms. There are also changing rooms for guests, staffing facilities, utility room, technical room and office for the managers of the sports hall. The underground floor features a bar with a billiard room and bowling. In the basement is also designed a warehouse, a technical room and separate toilets for men, women and invalids. The construction system of the hall is combined. The hall is based on foundation girders and baseplaces. The perimeter and interior masonry is from the Porotherm system. Pillars are reinforced concrete. The perimeter masonry is complemented by a contact thermal insulation system. The ceilings are designed from Spiroll cavity panels. The roof is designed flat on two levels. The roof above the hall is carried by timber truss girder. The roof above the background carries Spiroll cavity panels.

Master thesis is focusing on possibility of recycling waste from 3D prints. Goal was to degin a make lament extruder and winder. Design is based on research of avaible comercial and OpenSource solutions. The result is working machine with compact oor prejction, which is able to produce 110 grams of lament per hour. Deviation from diameter was ±0, 07. Conclusion place great emphasis on further improving and testing, beacuse it has not been reached limits of machine.

The need for energy efficient, clean and quiet, energy conversion devices for mobile and stationary applications has presented proton exchange membrane (PEM) fuel cells as a potential energy source. The use of PEM fuel cells for automotive and other transient applications, where there are rapid changes in load, presents a need for better understanding of transient behavior. In particular at low humidity operations; one of the factors critical to the performance and durability of fuel cell systems is water transport in various fuel cell layers, including water absorption in membrane. An essential aspect to optimization of transient behavior of fuel cells is a fundamental understanding of response of fuel cell system to dynamic changes in load and operating parameters. This forms the first objective of the dissertation. An insight in to the time scales associated with various transport phenomena will be discussed in detail. In the second component on the study, the effects of membrane properties on the dynamic behavior of the fuel cells are analyzed with focus on membrane dry-out for low humidity operations. The mechanical behavior of the membrane is directly related to the changes in humidity levels in membrane and is explored as a part third objective of the dissertation. Numerical studies addressing this objective will be presented. Finally, porous media undergoing physical deposition (or erosion) are common in many applications, including electrochemical systems such as fuel cells (for example, electrodes, catalyst layer s, etc.) and batteries. The transport properties of these porous media are a function of the deposition and the change in the porous structures with time. A dynamic fractal model is introduced to describe such structures undergoing deposition and, in turn, to evaluate the changes in their physical properties as a function of the deposition.
Ph. D.

The aim of the thesis is to carry out strategic analysis of STAKOPLAST cz, spol. s r. o. and based on the knowledge from external and internal analysis suggest an adequate strategy for the future development of the enterprise.

This master´s thesis is focused on analysis of the company which is situated in the pro-duction of plastic windows and profile systems. Analysis of the actual state is made through the analysis of the inner and outer environment, financial situaction is estimated with the Kralicek Quick Test. Thesis includes suggestions and recommendations which will cause improvement of the situation at general in following years.

This diploma thesis depicts project documentation for realization of a mixed-use building in Hradec Králové. The designed object includes fifteen flats in four storeys, a café, a hairdressing salon and no cellar. Vertical load-bearing walls of the first storey are designed to be built of reinforced concrete. Vertical load-bearing walls of the other storeys are designed to be built of ceramic blocks. The outside wall is insulated with expanded facade polystyrene and plastered with a thin-layer textured cream plaster. The last storey has a ventilated facade made of fibre reinforced concrete panels. The openings are filled with plastic windows including an aluminium entrance door with a fanlight. Horizontal constructions are made of monolithic reinforced concrete panels which are reinforced in one dimension. The roofing in designed as a flat roof with a layer of vegetation. The foundations of the multifunctional house are based on concrete piles and a reinforced concrete slab. The design of the object respects current housing in the area. The diploma thesis includes a basic review of construction physics and fire safety layout.

Project documentation in stage construction of the new building a four-storey residential building in,, Bystřice nad Pernštejnem " with establishment of the veterinary ambulance, and 7 bulit garages located in Bystřice Pernštejnem. Block of flats has 8 units. The building is designed as a regular block with projecting first Above ground floor south, north and east. The cladding is made from blocks SENDWIX system with external plastic contact insulation and window construction with triple glazing. The building has a flat roof. Conceptually, the building was designed as a passive house with the class of heat transmission through the building envelope A-very economical.

The subject of this master´s thesis is the construction of the guest house with restaurant in the village Plumlov near Prostejov. It is a building with a floor partially sunk into the ground and two floors. Basement is designed as part of the restaurant. Floors are designed for the guest house. In the pension there is a total of 6 accommodation rooms with a total capacity of 15 persons. The restaurant has a comfortable dining area for 25 people. The restaurant also includes a kitchen where they will prepare hot meals. Cladding basement of the shuttering and floors are designed as wood house by system "two by four". The ceiling above the restaurant is designed as a system, reinforced concrete, folded (TRAS system). The ceiling above the 1st floor is designed with wooden ceiling beams. The roof is gabled with unbalanced tendencies. The building is based on the foundation strips.

The aim of this thesis is to elaborate project documentation for new construction of low-energy residential building with 16 luxury apartments, apartment without barriers and with pharmacy of basic type. It is a four-storey detached building without basement, with flat roof, roof terraces and with balconies. Residential building is located in one of the most enjoyable parts of the city of Zlín – Jižní Svahy II in the vicinity of Central park with bicycle path and with beautiful view of the Zlín. The building will be located on land plot No. 2144/46, where is still situated unfinished building "Torso" from the late 80 years. The residential building is designed in brick system Heluz, ceiling construction is made up of prestressed hollow core slabs, perimeter walls are with external thermal insulation composite system and external doors and windows are made of plastic and aluminum with triple glazing. For heating and water heating will be utilized renewables energy, such as heat pump and solar collectors. Residential units with three residential rooms are designed with a forced ventilation by means of ventilation units with heat recovery. The building also uses modern shielding elements such as outdoor blinds and horizontal sun breakers. The part of the project are also disposition studies, seminar work and energy part.

Diploma thesis "Reconstruction of Restaurant with Housing Facilities Extension" is processed in the form of project documentation for building construction according to the applicable regulations (Act No. 183/2006 Coll., On Zoning and Building Regulations, including subsequent amendments). The project deals with the reconstruction of the existing restaurant building in the village Lísek, No. 89. The building is located on plot No. 49 in the cadastral Lhota u Lisku. Floor plan of the existing building is in rectangular shape with almost the unused basement and a deck above. The 1st underground floor is currently used only technical room and garage. In the 1st floor there is the sales area of restaurant, large kitchen and rooms for staff. Existing structures do not show signs of major damage. Reconstruction is not due to the technical condition of the building, but due to operationally unsatisfactory disposition and investor requiring to create an accommodation capacity. The requirement was to build new rooms to accommodate 24 persons. The supporting structural system of the 2nd floor is designed of ceramic bricks and 3rd floor due to the resistance of existing constructions is newly designed as wooden sandwich. The window openings are fitted with a six-chamber windows with triple insulation. Horizontally extension of the existing building corresponds to the current object. The roof of the building is gabled with dormers lighting the rooms in the 3rd floor. The building is designed so that even after the reconstruction match an existing installation. Part of building construction works is also landscaping. Due to the partial change in purpose of the building was necessary to design a suitable parking space with adequate capacity.

The building of Roman Baths and sauna world forms, along with a formerly-designed waterpark, a stand-alone recreational and sports compound in the vicinity of “Růžena's” quarry and the former “Hády” quarry in Brno. The mass of the object is nearly cubic, and in the cross direction it is complemented with an external atrium, with swimming pools situated next to the central glass-fronted part of the object. This bright space functions as a place of relaxation and offers a view of the city of Brno. The view and solar energy have been used in the south-western part as well, where a two-floor glass front has been designed. On the facades of the object there are narrow vertical windows which create an effect of dripping water. The primary architectonic plan has been to create an object offering relaxation, originated in the principles and traditions of Ancient Roman bathing, complemented with a sauna world and further related relaxation establishments.

The project solves a multifunctional Duma building in a vacant lot, contemplated the construction site is located in Carlsbad, in the street Vyhlíce. This is a protected site spa. Part of the project's layout and structural design of the house. It is a six-storey house with an attic and a basement floor. It is designed as a free-standing in the gap as the final house. The layout is divided into two complete units with their own input. There are spaces for business and residential units for permanent housing. Part of the living area are also room house equipment. Inputs to both parts are wheelchair accessible. The house is not wheelchair The house is designed as a brick building of brick masonry Porotherm the module dimensions of 250 (125) mm with reinforced concrete ceilings. Roofed by a hipped roof. The house is located on a private plot of 519 m2 built-up area of 221 m2. The land is gently sloping. The main orientation of the building to the cardinal's east and west. The south wall is adjacent to the neighboring house.

碩士
國立勤益科技大學
機械工程系
101
Injection molding of plastic products is a low-cost, high production-rate processing technology which is suitable for automation; however, the quality of the product is highly nonlinear because of the variations in temperature, pressure, flow-rate and density of the materials. This study is aimed at identifying the operation windows for the injection molding process parameters which produce lenses with optimized contour precision. The operation conditions for products with qualified contour precision and the lowest cost can be determined through these operation parameter windows. Taguchi experimental method was used to determine the optimized set of process parameters, and the control factors were identified through the contribution of the variance for each parameter. Full factorial experiments were implemented to identify the appropriate regression model to construct response surface, and the central composite design (CCD) was used to progressively determine the range of process parameters for lenses with minimum form error. The data points of the experiments were constructed the operation parameter windows, and confirmation experiments were performed to verify the validity of the windows.

碩士
朝陽科技大學
企業管理系高階產業經營碩士在職專班
103
In the eyes of the general, traditional industries, such as manufacturing and OEM livelihood products, are low cost, non-innovative, high-polluted industries, mostly negative stereotypes and are also marked as sunset industries. Thus, decades ago, a large numbers of Taiwanese companies took adventures developing business from Taiwan to Mainland China and Southeast Asia. Some were engulfed by the waves and some achieve successfully in foreign countries. At the same time, some manufacturers and OEM factories gradually move forward to excellent performance by strategy transformation. This paper mainly focuses on the development of Taiwanese PVC hard window covering manufacturers in overseas countries. Take one of the Taiwanese window covering manufacturers (A company) as an example, we investigate its strategy transformation process. The research is based on the case study research method, analyzing the environment by Mike Potter's five forces analysis. And based on the theory of strategy transformation and the resource based theory, the causes, types and achievements of A company's strategic change are analyzed. The transformation of A company consists of three phases, Phase 1 transformation comes from the threat of external environment generated by the regulation change happening to the target market (Lead free in the product formula). A transformation depending on the breakthrough development in relative products had successfully solved A company’s shipment-constrained situation in a short time. Phase 2 transformation comes from threats happening to external & internal environment simultaneously. A strategy transformation mainly on management process is adopted, that had been successfully upgraded production output & quality and elevated profit margin. Phase 3 transformation is still under developing. As existing issues in hard window covering industry are becoming more complicate & serious, based on past experience, the case company is pursuing a combination of product breakthrough and new market transformations. Based on the results of analysis, we propose some useful suggestions about phase 3 strategy transformation for the case company, and provide some suggestions about strategic analysis methods effectively react to the changing environment for traditional industries.

No
Methods of recycling unplasticized polyvinyl chloride (uPVC) window frame waste were investigated. The quality of untreated granular waste was compared to that of waste treated by a range of contaminant removal processes including melt filtration and dissolution. Processability of each recyclate was evaluated by using a highly instrumented single screw extruder that enabled melt viscosity and process variation to be monitored in real time. Product quality measurements such as mechanical properties and surface defects were made on extruded strip, and the nature of the stabilizers present was determined. The mechanical properties of recyclates were found to be comparable to or better than those of virgin material in all cases and conformed to industry standards for window profile. Contaminant removal stages significantly reduced the amount of large surface defects detected in extrudate. Processability was comparable to that of virgin compounds, but melt viscosity varied among different batches of recyclate, depending on the source and composition of the original PVC formulation.

The performance of plastered straw bale walls with respect to wind-driven rainfall was investigated in this thesis. The absorption coefficient, which describes the rate of water infiltration, was measured for 14 plaster types, twelve different earth plasters and cement and lime plasters. The absorption coefficient was measured during uptake of water from a free reservoir. The effective porosity of these plasters, which describes the moisture storage capacity and the degree of protection that a plaster offers to straw bales, was also determined by submersion in water. An analytical model employing the absorption coefficient, the effective porosity, and climatic data was used to predict and compare plaster performance and to demonstrate the usefulness of this type of data. Simulated wind-driven rainfall experiments were also conducted on two plaster types. The results indicate that the static test used to measure the absorption coefficient can reasonably be used to predict actual wind-driven rainfall infiltration.