Eksplorasi material daur ulang kantong plastik dengan teknik origami

Shopping plastic bag is a thermoplastic type LDPE and HDPE, that can be heated with hotpress. Through this recycling process come new material that can used for product material. The recycle plastic material has a lot of potential to be used as a product application. market research From founded many brands that try to recycle plastic still using another new material to give support to the plastic recycle material. Origami is a paper folding art that is commonly known by everyone. The study tried to apply the origami technique on recycled plastic bag material that has been heated with hotpress machine. With origami technique 90% the product can be made with this material entirely without the help of sewing and other materials. This is seen as an opportunity for the market that still use many new materials to support this material. The folding gives construction to the one sheet material and give new function to the recycle plastic material. The research uses experimental method. Series of paper origami patterns are applied on the recycle material, till founded several folding that can be apply on the recycle plastic sheet material. The research result is a variety of functional products made with origami techniques that have been egistered design industry copy wright.

Study on the strength of a fishing boat made from plastic recycles

Ship’s strength is a very significant factor in ship design. In this research, a study of the strength of ships made of recycled plastic material has been carried out. The ship has been designed according to the needs of the load weight, passengers, propulsion system, fishing equipment and the weight of the material itself. Then the load is distributed into the design, where the profile shape and plate thickness used are assumed to be temporary. The strength of the boat analysed, and the minimum plate thickness required in the design is 10 mm with maximum strain The recycle plastic used is type 2 (HDPE).

PLASTIC WASTE AND ITS REMOVAL BY LICENSED HORTICULTURAL FIRMS IN GEORGIA, USA

The purpose of the study was the investigation of horticultural firm behavior regarding plastic waste recycling and the constraints and incentives to increase the volume of recycled plastics. Licensed horticultural firms in Georgia recycle plastic waste such as plastic pots, trays, and multipacks to varying degrees. The survey involved horticultural firms licensed by the Georgia Department of Agriculture to conduct business in Georgia. A total of 2,194 firms were contacted and 299 completed the questionnaire. The scope of the survey was larger than a survey conducted in 2013. The survey response summary revealed that the majority of firms recycled at least one half of the used plastic pots. Results show that constraints to recycling include the sorting, storage, and cleaning of plastic waste. The share of respondents agreeing that those factors limit plastic recycling was 59%, 56%, and 69%, respectively. Lower waste pickup fees in exchange for plastic recycling would increase the volume of recycled plastic waste in the horticultural sector.

Possibilities to Recycle Plastic Waste in Cementitious Materials

In the paper, the changes of properties of expanded clay concrete when a part of the coarse aggregate is re- placed with plastic waste are discussed upon. First of all, standard expanded clay concrete specimens were formed, and then 5%, 10%, 20% share of the fraction 4/8 of the expanded clay aggregate was replaced with plastic waste. The properties of expanded clay concrete, such as the density of the mixture, the slump, the density of the dried expanded clay concrete specimens, the ultrasonic pulse velocity, the water absorption, and the compressive strength, were estab- lished and analyzed; in addition, a microstructural examination was carried out. It was found that upon striving to use the maximum share of waste (20%), it is possible to ensure about 4% higher density of expanded clay concrete and almost 50% higher compressive strength, as compared to expanded clay concrete of the control specimens. SEM analysis showed that the same minerals, i.e. portlandite, ettringite, calcite and calcium hydro silicates were identified in specimens from all batches.