{"id":11887,"date":"2021-02-02T12:36:48","date_gmt":"2021-02-02T17:36:48","guid":{"rendered":"https:\/\/www.porex.com\/?page_id=11887"},"modified":"2023-08-28T09:10:42","modified_gmt":"2023-08-28T13:10:42","slug":"porous-foam","status":"publish","type":"page","link":"https:\/\/www.porex.cn\/en\/porous-polymers-technologies\/porous-foam\/","title":{"rendered":"Porous Foam"},"content":{"rendered":"\n
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Technology<\/p>\n\n\n\n

Porous Foam<\/h1>\n\n\n\n

Biocompatible, hydrophilic and hypoallergenic polyurethane open-cell foam<\/p>\n<\/div>\n\n\n\n

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Porous Foam Expertise for Medical & Cosmetic Applications<\/h2>\n\n\n\n
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Open-cell porous foam is manufactured by Porex using proprietary or customized blends of raw materials through a clean polyurethane process that does not use catalysts. Various formulations can offer wide-ranging densities, porosities, and levels of softness available with application-specific additives including antimicrobials, nanomaterials, pharmaceuticals, botanicals, cosmetic ingredients, and colorants that can enhance your device\u2019s look, functionality, and performance. Porex’s porous foam types include both medical-grade (ISO 10993-certified) and cosmetic foams, with pore sizes ranging from 90 microns to over 350 microns.<\/p>\n<\/div>\n\n\n\n

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Talk with a Material Science Expert<\/h3>\n\n\n\n
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Ask An Engineer<\/a><\/div>\n<\/div>\n<\/div><\/div>\n\n\n\n
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Manufacturing process<\/strong><\/h3>\n\n\n\n

Polyurethane foam materials can be manufactured using two different processes: a conventional \u201cone-shot\u201d process \u2013 like you see in furniture and car seat cushions \u2013 or as a two-step prepolymer process. During a one-shot approach, all ingredients are simultaneously mixed and poured onto a conveyor, a trough, or a mold, where it is allowed to react, expand and cure. While this process does promote high throughput, it does not lend itself to customization, as cell structures are non-uniform. For application-specific devices, Porex\u2019s two-step process, as highlighted below, allows for the creation of customizable, omnidirectional pores that can promote faster wicking, higher absorption, and excellent retention in both advanced medical and cosmetic applications.<\/p>\n\n\n\n

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Step 1:<\/strong> Isocyanate, polyol, and\/or other ingredients are mixed in a certain stoichiometric ratio to make a prepolymer<\/p>\n\n\n\n

Step 2:<\/strong> Prepolymer activated with an aqueous solution containing primarily water. <\/p>\n\n\n\n

Step 3<\/strong>: Continuous foaming process from reaction, rising, curing, and drying.<\/p>\n\n\n\n

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Options for customizing porous foam<\/h3>\n\n\n
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