Talk:Injection moulding

message: Added a overview of the Injection Molding Machine I can add anything that you believe is missing and is imperative to understanding the process.--UofAIndustrialDesign (talk) 06:19, 26 February 2009 (UTC)
thread_title:  Overview image(image) 

message: sorry, but the given image does not show artiffical flower which has been made with Injection molding. that might be true for the green leaves beneath but the flowers itself are realy not a very good example for an mold making product. Adaso 14:38, 23 May 2006 (UTC)
thread_title:  artificial flower (image) 

message: I would disagree again. I am currently working for a plastic molding company in US, and we design, fix, and develop tooling CAD files for our customers (Intel, Panasonic, Gen-Probe, Crestron, Titleist, etc...), then we send the files to a Tooling, Molding factory in China and have their engineers look at them, make sure they are with in spec, then they proceed to make the tools and parts for us. I am sure Chinese technical expertise is not an issue in this industry.
 
I would disagree on the China bit. Most of the mould tools are made out there (it's cheaper to make them in China and ship them across to the UK, bizarrely). However, a lot of moulding still takes place in the UK - if memory serves, the Chinese don't have quite the technical expertise.
Anyway, the best article on injection moulding seems to be in Spanish....Ronaldson 11:35, 30 October 2007 (UTC)
replies: text: It seems to have been created that way, but there have been a couple edits to change mold to mould .  The split of how pages link to this subject is mixed, I count 45 through "mold" and variants, and 43 through "mould".  Should someone just be bold? --GargoyleMT 20:25, 2 October 2006 (UTC)

text: This got me too. I was wondering why the more popular (not to mention American, where Wikipedia originated and is hosted) is not used for this article. JettaMann 19:10, 26 February 2007 (UTC)

text: Shouldn't that be "humour"? —Preceding unsigned comment added by 70.71.135.43 (talk • contribs) 02:25, March 18, 2007
I moved the page, following yet another mould -> mold edit.  The numbers weren't as large as quoted above, for google results (1.39 vs 1.21), but I think this spelling is the more prevalent one.  --GargoyleMT 20:45, 24 April 2007 (UTC)
thread_title:  On Spelling 

message: Quickparts - Injection Molding is a commerical site.  It contains no technical or informative resources.  It has therefore, been reverted to previous revision.  Does anyway see a reason why this link should be kept? BeastRHIT 01:21, 27 July 2006 (UTC)
thread_title: Reverted Change from Quickparts

message: From the article... The number of "impression" in the mold of that part is refered to as cavitation.
I work in the industry, and have never heard this particular term used. Generally we just refer to a mold having multiple cavities. Also, it doesn't seem to be supported by any of the online dictionaries.
If someone can say for certain that this is indeed a proper usage of cavitation, I'll leave it alone, but if I don't hear back, I'll change it. NipokNek 18:03, 15 January 2007 (UTC)
replies: text: I've only heard of them being "cavities."  If the text is changed, the references to "core and cavity" will be a bit ambiguous; is there a better term to use in place of this one?  --GargoyleMT 22:40, 15 January 2007 (UTC)
replies: text: I've read it over, mentally removing the line about cavitation, and it's still seems coherent to me. I'm only talking about removing that one sentence, not every instance of "cavity." And as far as I know, there is no group term for multiple mold cavities. NipokNek 11:34, 16 January 2007 (UTC)
replies: text: My question was a minor point, of "cavity" meaning both the negative of the part as well as one half of the mold, and whether a better term could be used to reduce confusion.  As far as multiple cavity molds having a name, "family molds" are already covered.  I've heard of multiple cavity molds of the same part being called "gang molds", but I'm not sure how widespread the use of that term is.  --GargoyleMT 13:39, 16 January 2007 (UTC)

text: US Auto molders use "cavitation" as well. Mstefaniak (talk) 20:23, 29 April 2009 (UTC)
thread_title:  Cavitation? 

message: It would be nice if someone would show an exploded view of an injection mold showing the names of its parts.130.36.62.140 16:56, 1 February 2007 (UTC)
thread_title:  Nomenclature 

message: The article should not flip back and forth between "mould" amd "mold". The grammar needs fixing, as in "machine are". Italics are needed for "use-mention" distinction. Chris the speller 05:25, 3 February 2007 (UTC)
replies: text: Britiju has been adding new sections, and I've been copyediting them once his edits have subsided.  I cleared up the section you probably had issue with.  I also changed "mold" to "mould" everywhere it seemed applicable.  Does this address your concerns? --GargoyleMT 15:12, 3 February 2007 (UTC)

text: If I change the meaning of anything you've put in, let me know (or correct it yourself).  Your reorganization and expansion on this article is much appreciated.  --GargoyleMT 00:47, 4 February 2007 (UTC)
thread_title:  Needs consistent spelling, better grammar 

message: I was wondering why the link to http://www.custompartnet.com/wu/InjectionMolding was removed.  I found it to be very informative.
-mechen85
:I'm with you, I perused it and it looks like a fine addition to the external links. I'm going to dig through the edit history and try to find the point where it was removed, see if I can uncover a reason you or I have missed. Kierkkadon (talk) 22:18, 11 January 2013 (UTC)
thread_title:  External link 

message: This page would be improved by a picture of the auger from an injection molder. —Ben FrantzDale 19:47, 7 May 2007 (UTC)
replies: text: I've moved this request to the injection molding machine page, because that's where it belongs. Wizard191 (talk) 14:28, 18 April 2009 (UTC)
thread_title:  Auger photo 

message: The first photo of the article shows a two piece die set which currently carries the following caption:  "Standard two plates tooling - Core and Cavity are inserts in a mold base - "Family mold" of 5 different parts" .
Would the caption's author, or another person familiar with mold die design kindly clarify the caption's meaning for lay people reading the article?  The current description is not clear. A simpler description is justified given that the photo is within the introductory paragraph of the article, and the article itself is a general introduction to the manufacturing process which is bound to be read by numerous lay people.  Thanks if you can assist!  —The preceding unsigned comment was added by 206.47.191.132 (talk) 17:07, August 20, 2007 (UTC) 
Can another person revert this caption to its previous state which was, "An injection molding die (both male and female pieces) used for makeing auto indicator lamps."
--UofAIndustrialDesign (talk) 04:36, 26 February 2009 (UTC)
thread_title:  Help Needed:  uppermost photo caption simplification 

message: In the United States at least, it appears that injection molding tools are roughly divided into 3 classes depending on overall quality. The notes I have are as follows:
* Class 101: Usually constructed with stainless steel base, cavities and cores. Life of greater than 1 million shots. Includes features like parting-line locks, and guided ejection. The most expensive class of tooling.
* Class 102: Constructed from softer steels, life of 500,000 shots.
* Class 103: Prototype-level tool. Made from non-hardened steels or aluminum. Short life. Cheap.
My source for this info is a training seminar I recently attended. I don't have any formally published sources. Is anybody else familiar with this nomenclature? Can we add this to the tool section, or should it have its own page? Thoughts? FusionKnight 15:34, 3 October 2007 (UTC)
replies: text: Possibe source for this information. FusionKnight 21:52, 18 October 2007 (UTC)
thread_title: Injection Molding Tool Class

message: This [link] lists some of the available surface finishes for injection molded parts. I'll try and create a section on this. Does anybody else have any more info, or better sources? FusionKnight 17:50, 18 October 2007 (UTC)
thread_title:  Surface Finish 

message: I think this article doesn't cover anything that's really separate from the process itself. It should be integrated into Injection molding#Equipment Doodle77 (talk) 01:29, 30 March 2009 (UTC)
replies: text: Injection molding is already a 36k article, so I don't know if its really proper to add more to it. This seems like a decent start to what could be a big article. The info at injection molding could be merged into this article and then a nice little summary could be added. Wizard191 (talk) 12:43, 30 March 2009 (UTC)

text: I disagree with the proposition. Someone could check out http://www.custompartnet.com/wu/InjectionMolding#equipment . in all, i think that there is enough material on this topic to permit an independent existence. i'm not hinting at copying text from that page. all i'm stating is that there is enough material out there. Techniche.Writers (talk) 19:23, 31 March 2009 (UTC)
thread_title:  Proposed merge from [[Injection molding machine]] 

message: There is a website that has a brief overview of the moulding process - http://www.rutlandplastics.co.uk/moulding_process.shtml with links to other pages on the mould tool, materials and moulding machine.  Also on the site are more deatiled pages on materials and design guidelines.  I think it would be useful to add this to the external links. RPoracle (talk) 07:49, 10 July 2009 (UTC)
thread_title:  Proposed External Link 

message: I don't see what the problem is with having the image gallery. There are a lot of good images here of a die plus the finished part, of which there are no other images like that in the article. Moreover, it shows much more typical die that doesn't include side pulls. The other image that doesn't show side pulls has such fine detail that its hard to tell what the die is even for. Finally, it shows what a multi-cavity mold, another first for the images. Wizard191 (talk) 01:14, 26 October 2009 (UTC)
thread_title:  Image gallery 

message: This article contains a lot of great information, but it doesn't flow very well or feel completely encyclopedic. I'm considering completely rewriting it, consolidating a couple of sections, reorganizing the section hierarchy, that sort of thing. Turning the Process characteristics section in to prose and such. I don't want to eradicate any info, as I said this article is full of it. I just think it could be presented a tad better; this article seems like it's had a lot of people build it over a long period with little overall cohesion or cooperation. Any input would be welcome; I'll probably start it on my sandbox page (and of course I'll link to that once I do), and I encourage anybody with constructive additions and changes to make them there. As far as references go, fortuitously I have access to a good engineering library and so I should be able to verify and cite lots of content. Kierkkadon (talk) 16:31, 15 January 2013 (UTC)
replies: text: I was dumb when I wrote this, the only part of this article that needed rewriting was Process characteristics. I have rewritten it, as well as added references to support it. I also reformatted all the references in the article to give a uniform citation style across the board: I used  , , and  wherever applicable, and removed the Sources section because it became irrelevant as a result of my changes. --Kierkkadon talk/contribs 17:25, 23 January 2013 (UTC)
thread_title:  Proposal to rewrite 

message: Sorry to be picky, but in "Examples of polymers best suited for the process" it says all thermoplastics- but I'm not sure that PTFE can be injection moulded.
Gravuritas (talk) 21:53, 26 September 2013 (UTC)
thread_title:   Picky picky non-sticky 

message: This is not "British" English:
* Australia 
* France 
* Ireland 
* New Zealand 
* Nigeria 
* South Africa 
* Thailand   — Preceding unsigned comment added by 103.13.103.75 (talk) 07:36, 26 April 2014 (UTC)
replies: text: From the discussion above, #On spelling, it appears the page was moved to the mold spelling on the basis of google hits.  This is not in accordance with policy when it comes to the spelling system to use in an article.  I also see an argument that Wikipedia is American, particularly unacceptable reasoning.  The relevant guideline is WP:ENGVAR, which advises to comply with the variety of English first established in the article.  It was clearly created with this spelling.  I propose to move it back to its original spelling. SpinningSpark 10:04, 21 November 2014 (UTC)
thread_title:  Injection moulding 

message: Additions to Examples of polymers and Mould Design sections on 12/23/14
I added two external links to the website of my employer Toolcraft Plastics (Swindon) Ltd in these sections. Both links lead to useful webpages providing background information. One provides a list of common polymers and their suitability for certain projects; the other provides a list of common mould tool types and an explanation of what they are.SvanLeeuwen (talk) 11:00, 23 December 2014 (UTC)
replies: text: I have reverted both of those.  They were inserted as references, but neither is directly verifying any fact in the article.  In any case, there are numerous printed books on injection moulding that would make much more acceptable sources so there is really no need for a link to any page on your company site.  I suggest that in the future you restrict yourself to making suggestions here and not make any more direct edits to the article. SpinningSpark 14:27, 23 December 2014 (UTC)
thread_title:  Disclosure 

message: I find it curious that an article about Injection molding, doesn't once reference decoupled molding since it's basically used industry wide. Thoughts? War wizard90 (talk) 05:26, 9 January 2015 (UTC)
thread_title:  Not one mention of decoupled molding??? 

message: Whats with the use of you in this section, and the numbers that are included outside of the references? These probably need to be addressed. I will be taking care of the use of the word you, but, I am not sure what the numbers indicate. -- Orduin Discuss 22:19, 7 February 2015 (UTC)
replies: text: The numbers are an unconventional way of indicating page numbers within a ref. Cites, and the various  templates, are better. Andy Dingley (talk) 22:24, 7 February 2015 (UTC)
replies: text: I figured, but wanted another opinion on them, thanks! However, it appears to me that the information in some sections (especially the ones I have addressed) was copied or closely paraphrased from a textbook. -- Orduin Discuss 22:28, 7 February 2015 (UTC)
thread_title:  Curious content 

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thread_title:  External links modified 

message: Information to be added or removed: Please add the below section to the end of the "Examples of polymers best suited for the process" using this report as a reference. 
There are also a wide range of bioplastic materials suitable for injection molding. Bioplastics are those plastics which come from biomass at the beginning of their life (i.e., bio-based plastics and biocomposites), those which biodegrade into biomass at the end of their life (i.e., biodegradable plastics), or both (i.e., biodegradable and bio-based). Bio-based plastics commonly used for injection molding include bio-based PET, starch-plastic composites and wood-plastic composites. Biodegradable polymers suited for injection molding include PBAT and PCL. PLA and PHA are examples of injection molding grade polymers which are both bio-based and biodegradable. 
As with conventional plastics, bioplastics polymers can be alloyed and blended to achieve a wide array of physical properties, from enhanced tensile strength, flexural modulus or impact strength. PLA, for example, is generally thought of as a brittle material. A study revealed that PLA can be compounded with biodegradable thermoplastic elastomeric materials to modify the physical properties of PLA without compromising its compostability. At a ratio of 70% PLA and 30% biodegradable thermoplastic elastomer, the percent elongation increased 18.7%. At the same ratio, the impact strength of PLA increased more than 400%. In this way, bioplastic material manufacturers often customize blends and alloys of common polymers to achieve the required performance characteristics of a specific product or application. 
Explanation of issue: This page does not discuss bioplastic polymers suited for injection molding, and how processing considerations differ for these materials. 
References supporting change: https://www.greendotbioplastics.com/terratek-flex-as-an-impact-modifier-for-pla/
76wikibananas (talk) 20:51, 26 November 2018 (UTC)
thread_title: Some proposed changes

message: Your edit request could not be reviewed because the request is not formatted correctly. 
# The citation style predominantly used by the Injection moulding article appears to be Citation Style 1. The citation style used in the edit request consists of bare URL's. Any requested edit of yours which may be implemented will need to resemble the current style already in use in the article – in this case, CS1. (See WP:CITEVAR.)  
# Citation ref tags have not been placed within the requested text indicating which portions of the text the source is referencing. (See WP:INTEGRITY.)
In the collapsed section below titled Request edit examples, I have illustrated two: The first shows how the edit request was submitted; the second shows how requests should be submitted in the future. 
The Sun's diameter is 864,337.3 miles, while the Moon's diameter is 2,159 miles. The Sun's temperature is 5,778 degrees Kelvin.
 
 
In the example above there are three URL's provided with the claim statements, but these URL's have not been placed using Citation Style 1, which is the style predominantly used by the Injection moulding article. Additionally, the ref tags have not been placed within the text at the exact positions where the information they reference resides. Using the correct style and the correct positioning of the ref tags, the WikiFormatted text would resemble the following:
Please add the following sentence to the first paragraph of the article's "Sun and Moon" section:
The Sun's diameter is 864,337.3 miles, while the Moon's diameter is 2,159 miles. The Sun's temperature is 5,778 degrees Kelvin.
Please add the following sentence to the first paragraph of the article's "Sun and Moon" section:
*The Sun's diameter is 864,337.3 miles,[1] while the Moon's diameter is 2,159 miles.[2] The Sun's temperature is 5,778 degrees Kelvin.[3]
References
----
^ Sjöblad, Tristan. . Academic Press, 2018, p. 1.
^ Duvalier, Gabrielle. , Scientific American, 51(78):46.
^ Uemura, Shū. . Academic Press, 2018, p. 2.
In the example above the references have been formatted according to Citation Style 1, which shows the author, the source's name, date, etc. Also, the ref tags are placed in the exact location where the text which they reference resides. As Wikipedia is a volunteer project, edit requests such yours are generally expected to have this formatting done before the request is submitted for review. 
Kindly rewrite your edit request so that it aligns more with the second example shown in the collapsed section above, and feel free to re-submit that edit request at your earliest convenience. If you have any questions about this formatting please don't hesitate to ask myself or another editor. Regards,  Spintendo  22:16, 26 November 2018 (UTC)
thread_title: Reply 26-NOV-2018

message: Information to be added or removed: Please add the below section to the end of the "Examples of polymers best suited for the process" using this report as a reference. 
Explanation of issue: This page does not discuss bioplastic polymers suited for injection molding, and how processing considerations differ for these materials. 
There are also a wide range of bioplastic materials suitable for injection molding. Bioplastics are those plastics which come from biomass at the beginning of their life (i.e., bio-based plastics and biocomposites), those which biodegrade into biomass at the end of their life (i.e., biodegradable plastics), or both (i.e., biodegradable and bio-based). Bio-based plastics commonly used for injection molding include bio-based PET, starch-plastic composites and wood-plastic composites. Biodegradable polymers suited for injection molding include PBAT and PCL. PLA and PHA are examples of injection molding grade polymers which are both bio-based and biodegradable. 
As with conventional plastics, bioplastics polymers can be alloyed and blended to achieve a wide array of physical properties, from enhanced tensile strength, flexural modulus or impact strength. PLA, for example, is generally thought of as a brittle material. A study revealed that PLA can be compounded with biodegradable thermoplastic elastomeric materials to modify the physical properties of PLA without compromising its compostability. At a ratio of 70% PLA and 30% biodegradable thermoplastic elastomer, the percent elongation increased 18.7%. At the same ratio, the impact strength of PLA increased more than 400%. In this way, bioplastic material manufacturers often customize blends and alloys of common polymers to achieve the required performance characteristics of a specific product or application. 
76wikibananas (talk) 16:47, 11 December 2018 (UTC)
thread_title: Some proposed changes

message: # The COI editor has not provided reliable, secondary sources which confirm the information requested to be added.
# The COI editor has not made the required disclosures regarding their particular conflict of interest.
Regards,  Spintendo  17:38, 11 December 2018 (UTC)
thread_title: Reply 11-DEC-2018

message: I am not pushing for mold or mould to be used in this article, however I think there should be parity in spelling with the Injection molding machine article, which is written in american English, whether by changing this article or the Injection molding machine article Explodingtnt30 (talk) 17:47, 9 February 2024 (UTC)
thread_title:  Consistency across articles