{"id":1136,"date":"2025-10-29T08:21:47","date_gmt":"2025-10-29T04:51:47","guid":{"rendered":"https:\/\/myepanel.ir\/apit\/?post_type=product&#038;p=1136"},"modified":"2025-12-06T13:57:21","modified_gmt":"2025-12-06T10:27:21","slug":"polystyrene-ps","status":"publish","type":"product","link":"https:\/\/apitpetro.com\/en\/product\/polystyrene-ps\/","title":{"rendered":"Polystyrene (PS)"},"content":{"rendered":"<p><strong>What is Polystyrene (PS)?<\/strong><br \/>\n<\/br><br \/>\n&nbsp;<\/p>\n<p>Depending on formulation and additives, polystyrene exists in different forms:<\/p>\n<ul>\n<li>GPPS (General Purpose Polystyrene): Transparent, rigid, brittle, high gloss.<\/li>\n<li>HIPS (High Impact Polystyrene): Opaque, tougher, impact-resistant (modified with rubber).<\/li>\n<li>EPS (Expanded Polystyrene): Lightweight foam used in insulation, cushioning and disposable packaging.<\/li>\n<li>XPS (Extruded Polystyrene): Closed-cell foam with excellent thermal insulation, often used in building and construction.<\/li>\n<\/ul>\n<p>This family of polymers remains essential in the global plastics industry, with Asia-Pacific as the largest production hub, followed by Europe and North America.<\/p>\n<p>&nbsp;<br \/>\n<\/br><br \/>\n<strong>General Purpose Polystyrene (GPPS)<\/strong><br \/>\n<\/br><\/p>\n<p>&nbsp;<\/p>\n<p><strong>Definition<\/strong><br \/>\n<\/br><\/p>\n<p>General Purpose Polystyrene (GPPS) is the standard, unmodified form of polystyrene. Produced via suspension polymerization, GPPS is valued for its glass-like clarity, high stiffness, easy processability, and glossy finish. Unlike HIPS, GPPS contains no rubber modifiers, which makes it more transparent but also more brittle.<br \/>\n<\/br><\/p>\n<p><strong>Key Properties<\/strong><br \/>\n<\/br><\/p>\n<ul>\n<li>Appearance: Clear, colorless, high-gloss surface.<\/li>\n<li>Density: ~1.04 g\/cm\u00b3.<\/li>\n<li>Thermal performance: Glass transition ~100 \u00b0C; good dimensional stability under heat.<\/li>\n<li>Mechanical: High rigidity, excellent dimensional accuracy, brittle under impact.<\/li>\n<li>Processing: Easily processed by injection molding, extrusion, and thermoforming.<\/li>\n<li>Electrical: Good insulating properties.<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<p><strong>Commercial Grades &amp; Trade Names<\/strong><br \/>\n<\/br><\/p>\n<p>Global producers market GPPS under different trade names, including:<\/p>\n<ul>\n<li>AmSty GPPS (AmSty, USA)<\/li>\n<li>Styrolux \/ Styron GPPS (Trinseo, EU\/US)<\/li>\n<li>INEOS Styrolution GPPS (Global)<\/li>\n<li>Chi Mei Polystyrene GPPS (Asia-Pacific)<\/li>\n<\/ul>\n<p>Buyers typically specify melt flow index (MFI), clarity, food-contact compliance, and special additives like UV stabilizers or flame retardants depending on the end-use.<br \/>\n<\/br><\/p>\n<p><strong>Applications<\/strong><br \/>\n<\/br><\/p>\n<p>GPPS is the material of choice wherever clarity, gloss, and dimensional precision are required:<\/p>\n<ul>\n<li>Food packaging: trays, disposable cutlery, clamshell containers.<\/li>\n<li>Consumer goods: CD\/DVD cases, cosmetic packaging, toys.<\/li>\n<li>Displays &amp; signage: point-of-sale units, transparent covers, thermoformed sheets.<\/li>\n<li>Medical devices (non-critical): petri dishes, lab consumables.<\/li>\n<li>Electrical &amp; electronic: transparent housings, insulators.<\/li>\n<\/ul>\n<p><strong>Processing Notes<\/strong><\/p>\n<ul>\n<li>Methods: Injection molding, extrusion, thermoforming.<\/li>\n<li>Advantages: High productivity, easy coloring, excellent surface finish.<\/li>\n<li>Limitations: Low impact resistance, poor UV stability without additives, limited solvent resistance.<\/li>\n<\/ul>\n<p><strong>Packaging &amp; Supply<\/strong><\/p>\n<p>Commercial GPPS is delivered in:<\/p>\n<ul>\n<li>25 kg bags<\/li>\n<li>1,000 kg jumbo bags (FIBCs)<\/li>\n<li>Bulk delivery (pneumatic tankers)<\/li>\n<\/ul>\n<p>All grades are supplied with TDS (Technical Data Sheet), COA (Certificate of Analysis), and MSDS (Safety Data Sheet). Food-contact and medical-use grades meet FDA and EU regulations for safety.<br \/>\n<\/br><\/p>\n<p><strong>Sustainability<\/strong><br \/>\n<\/br><\/p>\n<p>GPPS is recyclable under plastic recycling code 6. Although recycling rates differ by region, many processors now incorporate post-consumer recycled polystyrene (PCR-PS) into packaging and non-food products, supporting the shift toward circular plastics economy.<br \/>\n<\/br><\/p>\n<p><strong>Why Choose APIT for GPPS Supply?<\/strong><br \/>\n<\/br><\/p>\n<p>At APIT, we specialize in the secure trade and export of chemical and petrochemical products. For GPPS, we provide:<\/p>\n<ul>\n<li>Direct sourcing from tier-one global producers.<\/li>\n<li>Reliable supply chain with certified food-contact and industrial grades.<\/li>\n<li>Flexible packaging and global export logistics.<\/li>\n<li>Technical consultation for selecting the right GPPS grade for your application.<\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>Polystyrene (PS) is one of the most widely used thermoplastic polymers, produced by the polymerization of styrene monomer (C8H8). It is a synthetic aromatic hydrocarbon that has been commercially manufactured since the mid-20th century. Known for its light weight, ease of processing, cost-effectiveness, and versatility, polystyrene is used across packaging, consumer goods, construction, electrical, and medical industries.<\/p>\n","protected":false},"featured_media":1412,"comment_status":"open","ping_status":"closed","template":"","meta":{"_acf_changed":false},"product_brand":[],"product_cat":[35],"product_tag":[],"class_list":{"0":"post-1136","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-polymers","8":"first","9":"instock","10":"shipping-taxable","11":"product-type-simple"},"acf":[],"_links":{"self":[{"href":"https:\/\/apitpetro.com\/en\/wp-json\/wp\/v2\/product\/1136","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/apitpetro.com\/en\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/apitpetro.com\/en\/wp-json\/wp\/v2\/types\/product"}],"replies":[{"embeddable":true,"href":"https:\/\/apitpetro.com\/en\/wp-json\/wp\/v2\/comments?post=1136"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/apitpetro.com\/en\/wp-json\/wp\/v2\/media\/1412"}],"wp:attachment":[{"href":"https:\/\/apitpetro.com\/en\/wp-json\/wp\/v2\/media?parent=1136"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/apitpetro.com\/en\/wp-json\/wp\/v2\/product_brand?post=1136"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/apitpetro.com\/en\/wp-json\/wp\/v2\/product_cat?post=1136"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/apitpetro.com\/en\/wp-json\/wp\/v2\/product_tag?post=1136"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}