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I hope you saved the insides of the pumpkins you carved for Halloween and used them instead of other food. This is how I say SOS: save our waste. Plastic materials-pellets, powder or waste products-are the "food" in our production process, and few people argue about reducing waste. But the economic perspective must be remembered-it's not just "not seeing the mind and not bothering you". It must be stored clean and used wisely, just like pumpkin offal and holiday leftovers.
Halloween is over, and with it comes the topic of controlling or avoiding ghosts and excessive sugar, so we can look forward to Thanksgiving. We have a lot to be thankful for, but every year I remind you to be grateful for what you don’t have, whether it’s illness or other troubles. If you are a super user-you feel safer when you let people do things for you-postpone one day. The people we do — the more we do for ourselves, the safer — may help anyway.
My family once had a Thanksgiving dinner and we only ate New World food. Turkey is ok, but too common, so we use salmon to remind us of locals and immigrants who depend on fish. Corn is ok (we have never even heard of quinoa), as are potatoes, tomatoes, beans and avocados. There are no cattle, sheep or pigs, but the bison (American buffalo) is okay. There is no sucrose (originally in New Guinea and India), but honey is okay (bees are everywhere). Aztec chocolate is good, but bitter. We are now using the same technology as the plastic compound to make Intercontinental Chocolate. We will not waste too much. Here are some useful ideas to maximize the value of materials and minimize plastic waste.
Keep it clean. Unless everyone really cooperates and/or the fragments are large enough to be sorted manually on the pelletizer, the open waste bin will cause contamination. Vacuum out the used container with a vacuum cleaner, use a film liner, or do both. In factories using polyethylene, the lining can also be shredded and recycled, but shredding film is not as easy as it sounds. This is one of the reasons why PE film is not recycled as much as possible.
Pay attention to the color. Most plastics turn slightly yellow when heated, and many plastics are intentionally colored. If you have black apps, put them all there. I once had a customer who paid a bonus to a salesperson to get an order from UG (Uncritical Gray).
Understand degradation. Heat treatment will destroy some polymer chains, which will reduce the tensile strength and impact strength and increase the melt index, but remember HMM (how much is important). It is still possible to use waste at a low percentage; or add antioxidants or stabilizers to the raw materials or waste, use extrusion to increase the proportion of waste; or reduce the melt temperature to prevent chain scission. Higher melt index will affect performance and some threading systems. If you have an injection molding department, it may be able to use it, but not vice versa. Extruding faster may help reduce very hot time, but if higher rpm means hotter melting, you may not win. It may not have any impact on the end use, because these features may involve some safety factors.
Observe the particle size. Use the same granulator and screen; if you replace it, please pay attention to the problem, especially in small extruders, the channel depth in the feed zone is shallow enough to block large particles and cause irregular feeding. If the inpush drops, the barrel temperature may return to its original shape after adjustment.
Keep good records. Mark the contents of barrels and boxes as much as possible, such as material type, supplier's product and batch number, extrusion date, color, etc. Copying the record in the computer and attaching the actual location is also a good container, and it may even be a bag that is easy to find.
Proud of our repeated use. People are now very concerned about reducing plastic waste. I support this, but not because plastics are toxic, because they are not. I'm sorry that this misunderstanding is so common around the world, I have some ideas-ask me if you are interested-but I don't think it will go away. I will save and save it in any way I can. This includes pumpkin in pies, pumpkin fritters, and even pumpkin puree mixed with bison, which is used to make all-American burgers or patties. And, yes, I want to eat some intercontinental hot chocolate.
Allan Griff is a senior extrusion engineer. He initially provided technical services for a major resin supplier. Now he has been working independently for many years as a consultant and an expert witness in legal cases, especially as an educator through webinars and seminars. , Both are public and internal, and are now in his new audiovisual version. He wrote "Plastic Extrusion Technology", which is the first practical extrusion book in the United States, and the "Plastic Extrusion Operation Manual" updated almost every year, and is available in Spanish, French and English. Learn more on his website www.griffex.com or send an email to [email protected].
Griff said that in the near future, or never plans to hold live seminars, because his virtual audio-visual seminars are even better than live broadcasts. No need to travel, no need to wait for the live broadcast date, use the same PowerPoint slides, but with audio explanations and written guides. Watch at your own pace; group attendance is offered at a single price, including the right to ask questions and get detailed answers via email. Call 301/758-7788 or send an email [email protection] for more information.
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