- Finished products to be made from these two methods.\n- Can one method used to replace for the orther.\n- For the PET material, what products will be made from these two method.\n- Process of these two method
216167
Extrusion.. There is a mold or tooling which the molten plastic is forced through to produce a continuous shape.. Extrusion is used to make Plastic window frames, plastic bags, guttering, plastic tubing etc.\nInjection.\nThere is a closed mold or tool which molten plastic is injected into, solidified and then removed.\nFor example the fittings that you use to fix your guttering to your roof, the dashboard of your car, , the soles of your shoes.. I.e. complex shapes that require dimensions in X, Y and Z axes whereas the Extruded only needs the X and Y axes.
137682
there are different types of glue,yes some are made from horses they call it hide glue they can make it from any animal but there is a lot of left over horses, they also make some brands of dog food from horses.
186533
you can search the internet for "recycling plastic materials" in your area, there are many manufacturers who colect (they pay for this kind of waste) PE, PP, PS, ABS or PET and made granules from it, selling them after for more, as raw material.
321301
Well it is like this. Take Simpson Strongtie manufacturing. They take in rolls of steel and they cut them up into small pieces of steel and stamp them out to make things like rafter connectors deck connectors and well quite a few different types of metal fasteners. They take a commodity in and then make it into a usable commodity for the consumer like me and you. That's Turnkey. One commodity that is sold to manufacture another which is sold to companies like Lowes or Homedepot and consumed by consumers and end users where a profit is made by the middle man which in this case was Homedepot and Lowes.
537116
nylon\n\nmade from petro chemical
285875
http://www.finishing.com/faqs/howworks.html\n\nI work at place where we send some of our stuff out to be electroplated(nickel, brushed nickel..chrome etc)\nI patinate brass (lighting fistures) with chemecals and torch.(we build antique repro lighting fixtures.
261566
Ah ha.  Thermite.  Magnesium ribbon would be the usual method to start this reaction.\n\nBe careful with this reaction...
58267
Ok - question number 1:\n\nB takes 2 hours to do 500 dishes, T takes 3 hours to do 450 dishes. In 2 hours, they will have done 800 dishes altogther (because T does 300 dishes in 2 hours and B does 500 dishes). Now B is working harder than T: we now need 200 more dishes and they need to finish at the same time. Now use algebra:\n\nB works at the rate: 250 per hour (call this b)\nT works at the rate: 150 per hour (call this t)\n\n(b + t)*time = 200 dishes, substitute in above figures and get:\n\nt=1/2 hour. So altogether the time takes 2 1/2 hours.\n\n\n\nQuestion 2:\n\nSet up the folowing equations. The total amount of work to be done is W:\n\n(b+t)*(8 hours)=W, b*time1=W, t*time2=W\n\nI used these because in equation 1 - b and t take 8 hours to do the work, equation 2 - b takes time1 to do the work and T takes time2. Furthermore, time2=time1-12 (we are told this). Now solve this simultaneously: (ie put b=W/time1 and t=W/(time1-12) into the 1st equation) and you get time1 = 4 or 24 hours. Well since 4 is not sensible (4-12 = - 8hours!) then you choose 24 hours. So b takes 24 hours and t takes (24-12)=12 hours.\n\n\n\nQuestion 3: (follows same format as previous questions)\n\nM-100mins, S-120 mins\nEquations are \nM*time(m)=W,  S*time(s)=W, L*time(l)=W\n\nThe equation describing what happens is:\n\n30*(M+S) + 20*(M+S+L)=W\n\nSince we know time(m) and time(s) we substitute in and get:\n\n50*(M+S) + 20L = W\n50*(W/100 + W/120) + 20W/time(l) = W\n\ncancel W's and get time(l)=240mins or 4 hours\n\n\n\nQuestion4: 1st man is A and new man is B\n\n6*A=W, 8*B=W\n\n2*(A+B) + B*time(b) = W\n2*(W/6 +W/8) +W*time(b)/8 = W\n1/3 + 1/4 + time(b)/8 = 1\n\ntime(b) = 3 1/3 hours = 3 hours, 20mins.
610118
a product useful > with  easy >long lasting?  is an advantage\ndisavantage >    product which  is not useful> wears out > hard to use> uncommon> no longer made?  these are disavantages
455443
The previous answer is partially correct.\n\nWater reacts with the excess acetic anhydride which is converted to acetic acid.\n\nSince the product is only slightly soluble in water, this also makes it possible to collect the product as a solid.
364529
Different chemical composition, one has a reaction the other doesn't..☺
227207
You need to take more care in writing equations when you post your questions. \n\nPart a) is difficult to decipher - you will need to re post it.\n\nPart b) is presumably:\n\nCH3COOH(l) + 2O2(g) --> 2CO2(g) + 2H2O(l)\n\nPart c) is presumably:\n\nFe2O3(s) + 3CO(g) --> 2Fe(s) + 3CO2(g)\n\nI would next use heats of formation to calculate the enthalpy change in the above reactions using the formula:\n\ndelta Ho = sum(heats of formation of products) - sum (heats of formation of reactants).\n\nIf you have a data book or data sheet, these values can be found there (Note: heats of formation of elements are zero.) \n\nIf you want web sites that might help you, try googling "enthalpy change problems" +tutorial.\n\nI hope this helps you.
443441
Hello..\n\nI think the better option is:\n\nComposite materials are made from layers of\nsemiconductors.\n\nBecuase a composite is a material that have 1, 2 or 3 nanodimensions, perhpas quantum dots, nanowires, etc.
486868
Here are some references.  From the second:\n\n"In our process, the nylon is selectively dissolved into formic acid. The solvent and polymer solution is then mixed with a compressed antisolvent (supercritical CO2) in which the polymer is insoluble. The nylon precipitates from the solution and can then be recovered. Both the solvent and antisolvent are recycled in this continuous process."
457651
Look at like this. Whatever the amount of the first component\nis, consider it 100%, then for the second component, it would be 80% of the first.\nExample:\nYou have 500 gm of component 1,\nyou put 80%of that or 400 gm of component 2.\nThe total gms would be 900 gm, 100 parts component 1 to\n80 parts component 2.\nHope this helps.
242764
Its a very complicated system, B&W plastic's L.A. Ca.,\nthe machines are big and takes a large work force like for tupperware  but small systems can be made and stay to one project, you need material,a melting machine and machine that can inject into molds , you must have molds of what evver your making, a work force to manage the complacated machines, temp control, color, and what not people to remove the finished poduct, and a quality control team to check for imperfections, and return the bad back to the melting pot, the by porducts are harmful to the enveriment and need to have control there as well. then you ned a place to sale this poduct its harder than you think, and make sure you dont copy some ones copy right or you will be sued, and u need a buisness licenes, a place to do this and money for machines, and if you have zero understanding about this trade , u need to pick a different one, its harder than you think, china as everyone beat, unless u have a endless supply of money, what would u make thats not all ready made ?
352691
the other product is zinc chloride.\nand the reaction is single replacement.