4.5. Raw materials used: Thermoplastics are the most commonly used raw materials for SLS process. Based on the applications, the raw materials can be selected based on the criteria’s related to mechanical properties, thermal properties, Electrical properties and manufacturing feasibility. The materials used in SLS may be listed as: • Polyamide. • Nylon 12 • Polystyrene. • Other composite thermoplastic materials. 4.6. Advantages: 1. Simultaneous production of the jobs. 2. Raw materials used are inexpensive. 3. Built products are self supported. 4. The assembled movable components can be produced. 5. Distortions produced due to stress are reduced. 6. Selective laser sintering (SLS) gives the capability of flexible snaps and living …show more content…
Solid Ground Curing (SGC), also known as SOLIDER Process, is resin-based Rapid Prototyping process manufactured and maintained by Cubital Incorporated in Israel. This process uses photosensitive resin or polymer hardened in layers as with the Stereolithography Process (SLA). While the method offered good accuracy and a very high fabrication rate, it suffered from high acquisition and operating costs due to system complexity. This led to poor market acceptance. Nevertheless, it's still an interesting example of the many technologies other than Stereo lithography that utilize photopolymer materials. The early versions of the system weighed several tons and required a sealed room. Size was made more manageable and the system sealed to prevent exposure to photopolymers, but it was still very large. The common two machine models of this process are the entry-level SGC 4600 and the high-end SGC 5600. 5.2: WORKING PRINCIPLE The two major principles of Cubital's Solid Ground Curing technology are: 1. The layer of resin or polymer is exposed to Ultra Violet flood light through a computerized programmable
3D printing has the potential to revolutionize the way we make almost everything. 3D printing was invented in the mid 1980s and was initially known as additive manufacturing. It consists of the fabrication of products through the use of printers which either employ lasers to burn materials (sintering) or place layer upon layer of material (known as stereolithography), eventually resulting in a finished item. Unlike the traditional manufacturing process, which involves milling, drilling, grinding or forging molded items to make the final product, 3D printing “forms” the product layer by layer. There are many different technological variants but almost every existing, 3D printing machine functions in a similar way: a 3D computer-aided engineering (CAD) file is sliced into a series of 2D planar sections and these are deposited by the printer, one above the other, to construct the part.
A Lithograph was produced by firstly drawing the image on a flat stone surface in an oil based medium, the stone is then moistened with water which is repelled by the oil the surface is then inked with an oil based ink which is unable to adhere to the wet surface. A Chromolithograph is a coloured picture produced by making and superimposing multiple lithographic prints, each of which adds a different colour. The process of colour lithography was first experimented with in the early 1800s by Aloys Senefelder the inventor of lithography, while ‘chromolithography’ was patented in 1837 by a French printer Godefroy Engelmann.
-can be built up in thing translucent layers like a varnish to make areas of glowing color or worked into fine details
The cutouts were then placed into large test tubes containing 4ml of isopropyl alcohol for each pigment band, total pigment sample 1, and total pigment sample 2. They were then sealed, until the pigments from the paper transferred onto the isopropyl alcohol. The same amounts of smaller test tubes were obtained, plus an additional small test tube, which was filled with isopropyl alcohol and acted as a blank. The eluted pigment solution lacking the paper was transferred into the rest of their respective smaller test tubes.
A Gift? OmniPrint International Shares Incredible Garment Pretreatment Hacks Again, OmniPrint International has shared some explosive hacks to help its consumers keep abreast with garment imaging trends. Image printing has many facets, and one should develop an understanding of each process to reach agreeable results. One industry innovator that has remained consistent with improving strategies is OmniPrint International. Since inception, they've been committed to developing high-performance printing technology and products to optimize processes.
The staining process has many steps in which the bacteria on the slide is stained so that
3D Printing: The weapon to save or kill? People nowadays might get the impression that the 3D printing technology is a relatively new concept in our daily lives. However, 3D printing technology has been invented and utilized in many fields such as creating human organs in healthcare, building architectural models in engineering, and even forming components that can be used in aeronautic fields. Since Charles W. Hull invented the 3D printing technology in the 1980s, scientists, engineers, and even normal people were and still are trying to discover more possibilities of the usages and changes in this technology. Same as every invention of the new technology, with its undeniable beneficial effects, 3D printing also faces lots of limitations on the printing material, financial costs, market standardization, and more crucially the possible abuse of it.
April 15, 2011 marks the date that kick-started the most high-profile US design patent cases of all time; a lawsuit that could possibly change the face of technology as we know it. Apple Inc. sued Samsung Electronics Co. on the grounds that Samsung’s smartphones as well as tablets infringed upon Apple’s technology and design patents (Apple Inc. v. Samsung Electronics Co., 2013). Deemed by the United States Court of Appeals for the Federal Circuit to be “The Patent Trial of the Century”, the case drew an extraordinary amount of worldwide attention, grabbing the headlines and taking center stage. The jury found that Samsung had infringed Apple’s design patents on the home button, and rounded corners of the phone, as well as their utility patents covering the “bounce back effect,” and “tap to zoom” functions (L., 2013). Samsung was asked to pay Apple $1.05 billion in damages (Stern, 2012). The case is likely to be re-examined, however, as appeals have already been filed. Impacting the product design of new technologies for years to come, this lawsuit has provided an opportunity for experts to further understand the scope of design rights and determine how close is too close in regards to design patent infringement (Carani, 2012). Patent laws are impeding to the point of prohibiting new products created by emerging or existing companies from entering the market; furthermore, patent laws have made it possible for current technology-producing companies to seemingly create a monopoly on technology design.
2. Lithography: Lithography in the MEMS context is typically the transfer of a pattern to a photosensitive material by selective exposure to a radiation source such as light. In lithography for micromachining, the photosensitive material used is typically a photoresist. When resist is exposed to a radiation source of a specific a wavelength, the chemical resistance of the resist to developer solution changes.
Measurement of plastic or glassy material glass transition temperatures or softening temperatures, which change dependent upon the temperature history of the polymer or the amount and type of fill material, among other effects.
A typical injection-molding production process involves blending of viscosity or plasticity adjusting agents, auxiliary and active(s) ingredients with the melted polyethylene glycol base. The melt is then extruded into precision-machined multicavity molds followed by rapid solidification.
4D printing offers the ability to make things that literally pull themselves together. The technology could also create objects that last longer than their 3D-printed counterparts and adapt to specific conditions on command. 4D printing is relay about using a 3d printer to print self requfingering programmable material. For example you have a non-living object that can change his shape and behavior over time kind like a robot but no microprocessors, in fact something that looks like a plastic. Skylar Tibet’s, the man who came up with whole idea has gone even fodder; he created a programmable sheet material. It look like a plastic, that in combination with the water it could change the shape in the cube. And the cube is just a beginning. It will be a million of shapes. It could be so useful, not just on the Earth but in the orbit as well. This idea could change the world, and living on it. Imagine you could just print your furniture. An...
"The Evolution of Cell Phone Design Between 1983-2009." Webdesigner Depot RSS. N.p., n.d. Web. 23 Oct. 2013.
Imagine printing what ever it is you need from your own office or home. In addition to that, you will have full control customizing the product and the printer will have no difficulties achieving your designs. All you have to buy is the ink and the material additives and the printer will do the rest.
A practical photographic process was developed. This is happen in 1839, Louis Daguerre of Paris has been announced his direct photographic process. In this process, he has been identified the exposure was made on metal plates that had been light-sensitized with a coating of silver iodine.