{"id":1729,"date":"2026-04-12T11:10:19","date_gmt":"2026-04-12T03:10:19","guid":{"rendered":"http:\/\/lishiduomanufacturer.com\/?p=1729"},"modified":"2026-04-12T13:21:24","modified_gmt":"2026-04-12T05:21:24","slug":"is-tpu-a-type-of-plastic-or-silicone","status":"publish","type":"post","link":"https:\/\/lishiduomanufacturer.com\/?p=1729","title":{"rendered":"Is TPU a type of plastic or silicone?"},"content":{"rendered":"\t\t
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TPU is neither a traditional kind of ordinary plastic nor silicone.
In simple terms, the full name of TPU is Thermoplastic Polyurethane (TPU), which is a type of polymer material and an important member of the thermoplastic elastomer (TPE) family. Its molecular structure contains both “hard segments” and “soft segments”, thus combining the processability of plastics (melted by heating and hardened by cooling) with the elasticity and flexibility of rubber. Therefore, it is generally classified as a type of plastic in the industry, but it is clearly emphasized that it lies between plastics and rubber, not a purely hard plastic, and is completely different from silicone (silicone rubber).
The main component of silicone is the silicon-oxygen-silicon chain (Si-O-Si). It belongs to thermosetting or organic silicon materials. Its shaping is achieved through vulcanization (chemical cross-linking), and once formed, it is very difficult to be melted and reshaped.
TPU is thermoplastic and relies on physical cross-linking (hydrogen bonds) to be able to be repeatedly heated, melted, injected, and recycled. Its environmental friendliness and processing flexibility far exceed those of silicone.
Please provide a sentence summary:
TPU = Advanced Environmental-friendly Plastic (Elastomer Type)
Silicone = Organic Silicon Rubber
The two are completely different kinds of things.
– Why are high-end phone cases nowadays so fond of using TPU? The truth is much more “technical” than you might think.
When you open the shopping app and search for “phone cases – transparent – not yellowing”, nine out of ten times the results that pop up will be clear plastic cases marked with the word “TPU”.
Someone said, “It’s just plastic, isn’t it?”
Someone said, “It’s similar to silicone, isn’t it?”
Actually, neither is correct.
The genuine TPU is no longer merely “ordinary plastic” anymore.
It’s called thermoplastic polyurethane elastomer. It sounds quite fancy, but all you need to remember is this one sentence:
TPU = The essence of rubber + The craftsmanship of plastic + The conscience of environmental protection.
It is as soft and elastic as rubber, and when dropped to the ground, it can cushion the impact and prevent the machine from getting damaged.
It can also be melted and molded at high temperatures like plastic, resulting in a clear and flawless product with smooth edges.
More importantly, it does not contain PVC plasticizers, does not require vulcanization, does not release harmful volatile substances, and the waste can be 100% recycled and reused.
So when you see an advertisement that says “Military-grade shock-proof TPU fully wrapped edges”, it is actually telling you:
This shell is made of TPU with a higher molecular weight and a more refined formula. It is more durable, resistant to tearing, and has a higher elasticity than ordinary plastics, several levels better in all aspects.
Let’s compare silicone next:
The silicone has a more “greasy” texture, is prone to picking up dust, has poor transparency, poor heat dissipation, and the edges after vulcanization molding are prone to having burrs…
And TPU is dry, does not leave fingerprints, has high transparency, good heat dissipation, and precise edge treatment. It is not prone to serious yellowing even after long-term use (especially for high-quality TPU that has been treated with anti-yellowing agents).
So now that the knowledgeable users are choosing shells, their first instinct is:
If you want high quality, choose TPU.
For environmental protection and durability, choose TPU as well.
For a superior feel without being cheap, it should be made of TPU.
Please provide a sentence for translation.
In the mobile phone accessory market in 2026, TPU will no longer be an “optional material”, but will become the standard component for high-end transparent cases.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"

TPU is neither a traditional kind of ordinary plastic n […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"set","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[1],"tags":[33,34],"class_list":["post-1729","post","type-post","status-publish","format-standard","hentry","category-uncategorized","tag-injection-molding","tag-injection-molding-factory"],"_links":{"self":[{"href":"https:\/\/lishiduomanufacturer.com\/index.php?rest_route=\/wp\/v2\/posts\/1729","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/lishiduomanufacturer.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/lishiduomanufacturer.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/lishiduomanufacturer.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/lishiduomanufacturer.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=1729"}],"version-history":[{"count":4,"href":"https:\/\/lishiduomanufacturer.com\/index.php?rest_route=\/wp\/v2\/posts\/1729\/revisions"}],"predecessor-version":[{"id":1733,"href":"https:\/\/lishiduomanufacturer.com\/index.php?rest_route=\/wp\/v2\/posts\/1729\/revisions\/1733"}],"wp:attachment":[{"href":"https:\/\/lishiduomanufacturer.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1729"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/lishiduomanufacturer.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=1729"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/lishiduomanufacturer.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=1729"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}