| Change log entry 82486 | |
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| Processed by: | richwarm (2024-03-20 23:41:39 UTC) |
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<< review queue entry 76144 - submitted by 'kbaiko' >> "to roll used in dyeing trough"??? I don't think "dyeing trough" is even a real thing, Google shows 700 results for that term. I guess they mean "vat dyeing", but that doesn't seem right either because 轧 here means "crushing" or "rolling", while the vat dye process involves submerging fabric in dye and air-drying. I imagine it's the machine shown here - https://textile-craft.blogspot.com/2014/12/latest-developments-in-cold-pad-batch.html - https://www.youtube.com/watch?v=Rqt3SCYHlUE https://www.sohu.com/a/169361387_654267 >轧染是怎么一回事儿 >轧染是将织物在染液中经过短暂的(一般为几秒或几十秒钟)浸渍后，立即用轧辊轧压，将染液挤压进入织物的组织和空隙内，同时轧去多余的染液，使染料均匀地分布在织物上 ------------------------------------- Editor: I don't know much about dyeing, but looking at what's on the Web, I would say the definition you propose is approximately correct but would be more precisely and succinctly termed "pad dyeing". Also, I find that the term "trough" is correct in the context of pad dyeing. zdic definition: 軋染定義 織物浸漬液後受軋輥壓力，使染液透入織物並去除餘液的染色方法。軋染方法將織物在染液中經過短暫的浸漬後，隨即用軋輥軋壓，將染液擠入紡織物的組織空隙中，併除去多餘的染液，使染料均勻地分佈在織物上。染料的上染是 ( 或主要是 ) 在以後諸如汽蒸或焙烘等處理過程中完成的，織物浸在染液裏一般只有幾秒到幾十秒，浸軋後織物上帶的染液 ( 通常稱軋餘率，以乾布重的百分率計 ) 不多，在 30%~100% 之間。 ( 合纖 30% 左右，棉 65%~70% 左右，粘膠 90% 左右 ) 。 https://www.zdic.net/hant/%E8%BB%8B%E6%9F%93 Note the expression 經過短暫的浸漬後. This indicates that the fabric is immersed only briefly, whereas in vat dyeing the time of immersion is typically anything from 20 minutes to several hours. The brevity of the immersion is, I believe, what makes it appropriate to call the reservoir used in this process a trough rather than a vat. "trough" is used here: "In piece dyeing, which is used primarily for fabrics that are to be a solid color, a continuous length of dry cloth is passed full-width through a trough of hot dye solution. The cloth then goes between padded rollers that squeeze in the color evenly and removes the excess liquid." https://www.cotton.org/pubs/cottoncounts/fieldtofabric/dyeing.cfm The following Wikipedia article refers to "dye baths", which appear to be the same thing as "dye troughs". These are distinguished from "vats" in that fabric is continuously moved through baths or troughs, whereas in a vat the fabric is allowed to sit stationary. "Fabrics are typically dyed after being manufactured through a process known as piece-dyeing, the technique involves immersion of the fabric in a dye bath. However, pad-dyeing was invented to accelerate the dyeing process without necessarily lowering costs.[8] This process involves feeding the fabric to be dyed through a machine equipped with dye baths and rubber rollers. The fabric passes over rollers, immerses into a dye bath, and then proceeds through rollers that remove excess dye, allowing it to return to the dye container.[8] The difference between piece-dyeing in a vat and using a pad-dyeing machine is that in the latter, the fabric is continuously moved through one or more dye baths, rather than being stationary in a vat until it is fully saturated.[8]" https://en.wikipedia.org/wiki/Cold_pad_batch The following article states that pad dyeing is also known as continuous dyeing. "Pad dyeing is nowadays known as continuous dyeing. The fabric is passed through large pad rollers which squeeze the dye onto the fabric. The material passed through the liquor and squeeze rollers would be expected to absorb 50% to 100% of their weight in the dye liquor. The lower the percentage pick-up, the higher must be the concentration of dye liquor." https://www.textiletoday.com.bd/continuous-dyeing-of-cellulosics-and-its-blends The following article on continuous dyeing has a diagram in which the dye is shown in reservoirs that are labeled as "troughs". "An initial padding stage is common to all sequences. It involves immersion of the fabric in the dye liquor contained in a trough of minimal volume, which is kept constantly replenished from a stock tank." https://textileapex.com/continuous-dyeing-method/ Here is the URL for the diagram: https://4.bp.blogspot.com/-JWPXwbTDQYw/VOWuhOf1bYI/AAAAAAAACAk/6cx06PYtNkE/s1600/Continuous-dyeing.jpg * * * One of the zdic definitions of 軋染 is "pad dyeing". Also, their definition of 軋染機 is "padder": [padder] 在槽中裝有壓輥,將色漿壓入織物以達着色的設備 https://www.zdic.net/hant/%E8%BD%A7%E6%9F%93%E6%9C%BA I asked ChatGPT to explain to me what a padder is. Note that the dye reservoir is referred to in its answer as a "trough". Me: In dyeing, what is a "padder"? ChatGPT: In dyeing, a "padder" refers to a machine or device used to apply liquids, such as dye solutions, chemicals, or finishes, onto fabric or other substrates uniformly. A typical padder consists of several key components: (1) Rollers: ... (2) Dye or chemical reservoir: Padders have a reservoir or trough where the liquid dye solution or chemical is held. (3) ... Some other web snippets: 冷堆軋染Cold pad-batch dyeing. https://www.solwell.com.tw/index.php?action=product&id=46&cid=2&aid=59 织物染色方法可分为浸染(dip dyeing)和轧染(pad dyeing)两种。 https://max.book118.com/html/2017/0628/118657528.shtm 平幅轧染中针织物形变对染色的影响 Influence of knitted deformation on dyeing in flat pad dyeing http://www.fzxb.org.cn/CN/10.13475/j.fzxb.20181003006 |
| Diff: |
- 軋染 轧染 [ya4 ran3] /to roll used in dyeing trough/ # + 軋染 轧染 [[ya4ran3]] /to dye (a fabric) by soaking in dye and applying pressure/ + 軋染 轧染 [[ya4ran3]] /pad dyeing/ |