{"id":6753,"date":"2026-08-20T00:12:19","date_gmt":"2026-08-19T16:12:19","guid":{"rendered":"https:\/\/www.shinepvc.com\/?post_type=product&p=6753"},"modified":"2026-08-25T18:04:49","modified_gmt":"2026-08-25T10:04:49","slug":"high-density","status":"publish","type":"product","link":"https:\/\/www.shinepvc.com\/ko\/pvc-foam-board\/high-density\/","title":{"rendered":"High Density PVC Foam Board"},"content":{"rendered":"
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Description<\/span><\/h2>\n<\/div>\n
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Density as the First Principle<\/span><\/h3>\n

Density is the first principle of PVC foam board, because it determines how much solid material exists in each cubic centimeter to resist bending, hold a screw thread, and absorb impact without cracking. High density board starts at 0.55 g\/cm\u00b3 and ranges up to 0.80 g\/cm\u00b3, roughly 40 to 100% more PVC per unit volume than the lightweight board used for indoor signage.<\/p>\n

Screw Holding Above 900N<\/span><\/h3>\n

Screw holding stays above 900N at 0.55 g\/cm\u00b3 and above.<\/strong> This is the cabinet-grade threshold set by QB\/T 5883-2023, the force required to pull a screw out of the board face. Below 0.45 g\/cm\u00b3, screw holding drops well below it, and cabinet hinges may loosen after months of daily use. Above 0.55 g\/cm\u00b3 and paired with Celuka’s hard surface skin, the screw stays where it was driven. The mechanism is straightforward: a screw thread compresses the material around it, and more solid PVC around the thread means more resistance to pull-out. Density is the variable that controls how much of it is there.<\/p>\n

Flexural Strength Versus Density<\/span><\/h3>\n

Flexural strength scales non-linearly with density.<\/strong> More solid PVC in the cell walls stiffens the foam structure. As a guide, increasing density from 0.45 to 0.60 g\/cm\u00b3, a 33% increase, typically lifts flexural modulus by more than the density increase alone. The practical consequence: a shelf made from 0.60 density board sags noticeably less than the same shelf at 0.45. For applications where flatness under load matters, shelving, cabinet floors, concrete formwork, this is the parameter that separates a board that stays straight from one that creeps.<\/p>\n

Celuka and Co-extruded Grades<\/span><\/h3>\n

High density alone provides strength, but the surface determines how the board performs in fabrication.<\/strong> Celuka high density board (0.55 to 0.80 g\/cm\u00b3) adds a dense hard skin formed during extrusion, where the surface freezes against a chilled calibrator before the core foams, creating a 0.1 to 1.0mm layer of near-solid PVC at Shore D65. This skin is what makes CNC edges clean and PUR edge banding reliable. Co-extruded high density board adds a functional cap layer extruded simultaneously with the core, the cap layer carries UV stabilizers and pigments concentrated at the surface where they are needed, instead of dispersed through the entire thickness.<\/p>\n<\/div>\n<\/div>","protected":false},"excerpt":{"rendered":"

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High density PVC foam board runs from 0.55 to 0.80 g\/cm\u00b3, roughly 40 to 100% more PVC per unit volume than lightweight signage board.<\/p>\n

The extra density is what keeps screw holding above the 900N threshold set by QB\/T 5883-2023 and keeps shelves from sagging under sustained load.<\/p>\n

Cabinet makers specify 0.55 to 0.65 g\/cm\u00b3 for bathroom and kitchen cabinet bodies; formwork buyers go to 0.65 to 0.80 g\/cm\u00b3, where reuse counts reach 20 to 60 pours. Shine quotes batch density data, because the number matters more than the label.<\/p>\n<\/div>","protected":false},"featured_media":6614,"template":"","meta":{"_gspb_post_css":"","_crdt_document":"","_uag_custom_page_level_css":""},"product_brand":[],"product_cat":[17],"product_tag":[159],"class_list":["post-6753","product","type-product","status-publish","has-post-thumbnail","product_cat-pvc-foam-board","product_tag-function","first","instock","shipping-taxable","product-type-simple"],"uagb_featured_image_src":{"full":["https:\/\/www.shinepvc.com\/wp-content\/uploads\/2026\/08\/pvc-foam-board-white-03-1.webp",1000,1000,false],"thumbnail":["https:\/\/www.shinepvc.com\/wp-content\/uploads\/2026\/08\/pvc-foam-board-white-03-1-150x150.webp",150,150,true],"medium":["https:\/\/www.shinepvc.com\/wp-content\/uploads\/2026\/08\/pvc-foam-board-white-03-1-300x300.webp",300,300,true],"medium_large":["https:\/\/www.shinepvc.com\/wp-content\/uploads\/2026\/08\/pvc-foam-board-white-03-1-768x768.webp",768,768,true],"large":["https:\/\/www.shinepvc.com\/wp-content\/uploads\/2026\/08\/pvc-foam-board-white-03-1.webp",1000,1000,false],"1536x1536":["https:\/\/www.shinepvc.com\/wp-content\/uploads\/2026\/08\/pvc-foam-board-white-03-1.webp",1000,1000,false],"2048x2048":["https:\/\/www.shinepvc.com\/wp-content\/uploads\/2026\/08\/pvc-foam-board-white-03-1.webp",1000,1000,false],"trp-custom-language-flag":["https:\/\/www.shinepvc.com\/wp-content\/uploads\/2026\/08\/pvc-foam-board-white-03-1.webp",12,12,false],"woocommerce_archive_thumbnail":["https:\/\/www.shinepvc.com\/wp-content\/uploads\/2026\/08\/pvc-foam-board-white-03-1-500x500.webp",500,500,true],"woocommerce_thumbnail":["https:\/\/www.shinepvc.com\/wp-content\/uploads\/2026\/08\/pvc-foam-board-white-03-1-300x300.webp",300,300,true],"woocommerce_single":["https:\/\/www.shinepvc.com\/wp-content\/uploads\/2026\/08\/pvc-foam-board-white-03-1-300x300.webp",300,300,true],"woocommerce_gallery_thumbnail":["https:\/\/www.shinepvc.com\/wp-content\/uploads\/2026\/08\/pvc-foam-board-white-03-1-100x100.webp",100,100,true]},"uagb_author_info":{"display_name":"Yuzhi","author_link":"https:\/\/www.shinepvc.com\/ko\/author\/"},"uagb_comment_info":0,"uagb_excerpt":"High density PVC foam board runs from 0.55 to 0.80 g\/cm\u00b3, roughly 40 to 100% more PVC per unit volume than lightweight signage board. The extra density is what keeps screw holding above the 900N threshold set by QB\/T 5883-2023 and keeps shelves from sagging under sustained load. Cabinet makers specify 0.55 to 0.65 g\/cm\u00b3…","_links":{"self":[{"href":"https:\/\/www.shinepvc.com\/ko\/wp-json\/wp\/v2\/product\/6753","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.shinepvc.com\/ko\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/www.shinepvc.com\/ko\/wp-json\/wp\/v2\/types\/product"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.shinepvc.com\/ko\/wp-json\/wp\/v2\/media\/6614"}],"wp:attachment":[{"href":"https:\/\/www.shinepvc.com\/ko\/wp-json\/wp\/v2\/media?parent=6753"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/www.shinepvc.com\/ko\/wp-json\/wp\/v2\/product_brand?post=6753"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/www.shinepvc.com\/ko\/wp-json\/wp\/v2\/product_cat?post=6753"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/www.shinepvc.com\/ko\/wp-json\/wp\/v2\/product_tag?post=6753"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}