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Posts Tagged ‘plastic’

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Injection Molding Process Tour with Billy Carmen from Product News Channel
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www.utahplasticsgroup.com – Custom plastic injection molding video. Complete custom products, plastics, molds. We also do cast and insert molding. Our clean room molding process allows for FDA and medical molding components. We also have a portable clean room for custom projects.
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Visit www.thy-precision.com today! Hong Yang Precision Industry Ltd. offers a convenient plastic injection molding process through experienced professionals that focus on all the important aspects of plastic injection molding.
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Injection Molding Troubleshooting: Common Defects in Injection Molding and Plastic Injection Troubleshooting and Solutions The purpose of this Video is to identify a broad range of molding problems that can arise in injection molded parts. This is intended as a guide only and may not be the optimum solution for every application. When troubleshooting, it is important to remember that the first step is to identify the “true” issue. When making processing changes, make one change at a time and allow two cycles, at a minimum, before moving on. If the change made does not fix the problem, then you should put that setting back to it’s original setting before making the next change. When it is necessary to request technical service, please have the following information available. 1. What type of problem, ie molding, part failure 2. Material type and lot number 3. Injection molding parameters 4. Nominal wall thickness, gate size, number of cavities 5. Material handling procedures, regrind percent used, drying times and temperatures 6. Shot size versus barrel size Visit plasticinjectionmouldingdesign.blogspot.com for the updated information. If you have been troubled by a lots of problems and errors during injection molding and looking for fast ways to troubleshoot them, then do not worry, you are at the right place. We will discuss about a lot of common errors that occur in injection molding cycle. The above information on injection molding defects and troubleshooting is always …

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Question by Gary: Is there an information source for temperature ratings of various PVC, plastic, etc. compounds?
This material will be used in an injection molding process to construct a product that will be placed in close proximity to the burners on a stove top, not on them.

Best answer:

Answer by PlasticsAnswers
This site has all of the data sheets of all of the plastic compounds:

http://www.professionalplastics.com/
Just search for the material you are looking for, and click on view data sheet.

Here is their PVC data sheet:
http://www.professionalplastics.com/professionalplastics/content/PVCType1Properties.doc

I hope this helps.

Add your own answer in the comments!

Checks for – Wall thickness – Bosses – Ribs – Mold wall thickness – Cutouts – Undercuts
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Question by Felix: What are the most commonly used plastic processes (injection moulding, blow moulding etc.)?
From all of the different plastic processes what are the more common ones and how much are they each used?

Best answer:

Answer by chor510
It really depends on what type of parts and materials you are talking about.

Thermoforming is very popular for a lot of consumer goods. You basically take a sheet of plastic and press a mold into it. An example is TV dinner trays.

Blow molding is very popular for bottles. You start out with a peg of plastic and blow air into it and fill out a mold.

Many of the harder and more perminant plastics are injection molded. You inject plastic into a steel mold and then pull it apart.

Another is FRP – fiberglass reinforced plastic. You see this a lot in tub surrounds and boats. You start with a layer of fiberlass and either spray on or inject plastic.

What do you think? Answer below!

visit www.cnmoulding.com for more detail how to produce a high quality clear cover by injection molding

Blow molding machines for PET bottles. A manufacturing process by which hollow plastic parts are formed from thermoplastic and there are three main types of blow molding: extrusion blow molding, injection blow molding, and stretch blow molding. The blow molding process begins with melting down the plastic and forming it into a preform.

Soffiaggio bottiglie di plastica e lavorazione materie plastiche Plastic Blow Moulding
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