{"id":13661,"date":"2024-12-06T09:47:48","date_gmt":"2024-12-06T00:47:48","guid":{"rendered":"https:\/\/www.shokubai.co.jp\/en\/?post_type=particle&#038;p=13661"},"modified":"2025-12-20T09:53:26","modified_gmt":"2025-12-20T00:53:26","slug":"guide-antiblocking","status":"publish","type":"particle","link":"https:\/\/www.shokubai.co.jp\/en\/particle\/guide-antiblocking\/","title":{"rendered":"Comprehensive Guide to Anti-blocking Agents\u3000\u3000\u3000"},"content":{"rendered":"\n<div class=\"wp-block-my-gutenberg-my-block00 m_ancNav\"><ul class=\"anc_content\"><li><a href=\"#anc01\" title=\"What is Blocking?\">What is Blocking?<\/a><\/li><li><a href=\"#anc02\" title=\"\">What are Anti-blocking Agents?<\/a><\/li><li><a href=\"#anc03\" title=\"\">Characteristics Required for Anti-blocking Agents<\/a><\/li><li><a href=\"#anc04\" title=\"\">Points to Consider When Selecting an Anti-blocking Agent<\/a><\/li><li><a href=\"#anc05\" title=\"\">Handbook<\/a><\/li><\/ul><\/div>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"anc01\">What is Blocking?<\/h2>\n\n\n\n<p>It is a phenomenon where films stick to each other during film production.<\/p>\n\n\n\n<p>Since films are manufactured and stored in rolls, if films stick together, issues such as wrinkles during processing and the inability to peel off the film from the roll occur.<\/p>\n\n\n\n<p>To ensure stable film production, anti-blocking measures for films are required.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"anc02\">What are Anti-blocking Agents?<\/h2>\n\n\n\n<p>Anti-blocking agents prevent blocking by forming protrusions to the film surface, thereby reducing the contact areas between films.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"359\" src=\"https:\/\/www.shokubai.co.jp\/en\/wordpress\/wp-content\/uploads\/2024\/10\/AB\u5264\u82f1\u8a9e\u30da\u30fc\u30b8\u4fee\u6b63\u7528-1024x359.jpg\" alt=\"\" class=\"wp-image-15223\" srcset=\"https:\/\/www.shokubai.co.jp\/en\/wordpress\/wp-content\/uploads\/2024\/10\/AB\u5264\u82f1\u8a9e\u30da\u30fc\u30b8\u4fee\u6b63\u7528-1024x359.jpg 1024w, https:\/\/www.shokubai.co.jp\/en\/wordpress\/wp-content\/uploads\/2024\/10\/AB\u5264\u82f1\u8a9e\u30da\u30fc\u30b8\u4fee\u6b63\u7528-300x105.jpg 300w, https:\/\/www.shokubai.co.jp\/en\/wordpress\/wp-content\/uploads\/2024\/10\/AB\u5264\u82f1\u8a9e\u30da\u30fc\u30b8\u4fee\u6b63\u7528-768x269.jpg 768w, https:\/\/www.shokubai.co.jp\/en\/wordpress\/wp-content\/uploads\/2024\/10\/AB\u5264\u82f1\u8a9e\u30da\u30fc\u30b8\u4fee\u6b63\u7528.jpg 1141w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<p>Generally, inorganic particles such as silica and organic particles such as acrylic particles are used.<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-medium\"><img loading=\"lazy\" decoding=\"async\" width=\"300\" height=\"167\" src=\"https:\/\/www.shokubai.co.jp\/en\/wordpress\/wp-content\/uploads\/2024\/02\/AB\u5264\u82f1\u8a9e\u30b5\u30a4\u30c83-300x167.png\" alt=\"\" class=\"wp-image-13676\" srcset=\"https:\/\/www.shokubai.co.jp\/en\/wordpress\/wp-content\/uploads\/2024\/02\/AB\u5264\u82f1\u8a9e\u30b5\u30a4\u30c83-300x167.png 300w, https:\/\/www.shokubai.co.jp\/en\/wordpress\/wp-content\/uploads\/2024\/02\/AB\u5264\u82f1\u8a9e\u30b5\u30a4\u30c83.png 645w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/><figcaption class=\"wp-element-caption\">SEM Photo (SEAHOSTAR\u2122 KE-S100)<\/figcaption><\/figure><\/div>\n\n\n<h3 class=\"wp-block-heading\">Applications of Anti-blocking Agents.<\/h3>\n\n\n\n<p>Anti-blocking agents are used in a variety of films, including optical films and packaging films.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"356\" src=\"https:\/\/www.shokubai.co.jp\/en\/wordpress\/wp-content\/uploads\/2024\/02\/AB\u5264\u82f1\u8a9e\u30b5\u30a4\u30c84-1024x356.jpg\" alt=\"\" class=\"wp-image-13680\" srcset=\"https:\/\/www.shokubai.co.jp\/en\/wordpress\/wp-content\/uploads\/2024\/02\/AB\u5264\u82f1\u8a9e\u30b5\u30a4\u30c84-1024x356.jpg 1024w, https:\/\/www.shokubai.co.jp\/en\/wordpress\/wp-content\/uploads\/2024\/02\/AB\u5264\u82f1\u8a9e\u30b5\u30a4\u30c84-300x104.jpg 300w, https:\/\/www.shokubai.co.jp\/en\/wordpress\/wp-content\/uploads\/2024\/02\/AB\u5264\u82f1\u8a9e\u30b5\u30a4\u30c84-768x267.jpg 768w, https:\/\/www.shokubai.co.jp\/en\/wordpress\/wp-content\/uploads\/2024\/02\/AB\u5264\u82f1\u8a9e\u30b5\u30a4\u30c84.jpg 1053w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"anc03\">Characteristics Required in Anti-blocking Agents<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">(1) Add Slipperiness to the Film<\/h3>\n\n\n\n<p>Stable formation of protrusions on the film surface improves the film&#8217;s slipperiness.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">(2) Less Drop off from the Film<\/h3>\n\n\n\n<p>If anti-blocking agents drop off during film production or processing, film performance will be reduced, and contamination due to dropped anti-blocking agents will occur. <br>In order to reduce drop off, an appropriate selection of anti-blocking agent particle size is effective.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">(3) Maintain Transparency of the Film<\/h3>\n\n\n\n<p>Appropriate selection of anti-blocking agents can control film haze and transmittance.<br>While an increased quantity of anti-blocking agents causes haze to rise, selecting an anti-blocking agent with the same level of refractive index as the base film will prevent the haze from rising.<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-medium\"><img loading=\"lazy\" decoding=\"async\" width=\"300\" height=\"196\" src=\"https:\/\/www.shokubai.co.jp\/en\/wordpress\/wp-content\/uploads\/2024\/03\/AB\u5264\u82f1\u8a9e\u30b5\u30a4\u30c86-300x196.png\" alt=\"\" class=\"wp-image-13693\" srcset=\"https:\/\/www.shokubai.co.jp\/en\/wordpress\/wp-content\/uploads\/2024\/03\/AB\u5264\u82f1\u8a9e\u30b5\u30a4\u30c86-300x196.png 300w, https:\/\/www.shokubai.co.jp\/en\/wordpress\/wp-content\/uploads\/2024\/03\/AB\u5264\u82f1\u8a9e\u30b5\u30a4\u30c86.png 753w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/><\/figure><\/div>\n\n\n<h3 class=\"wp-block-heading\">(4)Heat Resistance<\/h3>\n\n\n\n<p>It must be heat resistant and capable of withstanding the heating conditions during film molding.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"anc04\">Selecting an Anti-blocking Agent<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">Case1: Composition of Anti-blocking Agents<\/h3>\n\n\n\n<p>Anti-blocking agents are mainly divided into inorganic and organic particles.<br> Inorganic or organic particles are selected depending on the film composition and production method.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Case2: Film Production Methods<\/h3>\n\n\n\n<p>If the film production method is kneading, select powder; if it is coating, water-dispersed anti-blocking agents are to be selected.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Case3: Particle Size &amp; Particle Size Distribution<\/h3>\n\n\n\n<p>Evaluating multiple particle sizes and different particle size distributions will assist in selecting the optimum anti-blocking agent.<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"621\" height=\"348\" src=\"https:\/\/www.shokubai.co.jp\/en\/wordpress\/wp-content\/uploads\/2024\/03\/AB\u5264\u82f1\u8a9e\u30b5\u30a4\u30c87-1.png\" alt=\"\" class=\"wp-image-13697\" style=\"width:468px\" srcset=\"https:\/\/www.shokubai.co.jp\/en\/wordpress\/wp-content\/uploads\/2024\/03\/AB\u5264\u82f1\u8a9e\u30b5\u30a4\u30c87-1.png 621w, https:\/\/www.shokubai.co.jp\/en\/wordpress\/wp-content\/uploads\/2024\/03\/AB\u5264\u82f1\u8a9e\u30b5\u30a4\u30c87-1-300x168.png 300w\" sizes=\"(max-width: 621px) 100vw, 621px\" \/><\/figure><\/div>\n\n\n<h3 class=\"wp-block-heading\">Case4: Refractive Index<\/h3>\n\n\n\n<p>To suppress the increase in film haze, select an anti-blocking agent with a refractive index similar to the film base resin.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"anc05\">Handbook<\/h2>\n\n\n\n<div class=\"wp-block-buttons is-layout-flex wp-block-buttons-is-layout-flex\">\n<div class=\"wp-block-button\"><a class=\"wp-block-button__link wp-element-button\" href=\"https:\/\/www.shokubai.co.jp\/en\/products-download\/?pdf=guide-antiblocking_en\" target=\"_blank\" rel=\"noreferrer noopener\">Nippon Shokubai\u2019s Anti-blocking Agents<\/a><\/div>\n<\/div>\n\n\n\n<p><\/p>\n","protected":false},"author":4,"featured_media":0,"parent":0,"menu_order":1,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"cat_particle":[367],"class_list":["post-13661","particle","type-particle","status-publish","format-standard","hentry","cat_particle-guide-antiblocking"],"aioseo_notices":[],"acf":{"memo":"","show_hreflang":["ja"]},"_links":{"self":[{"href":"https:\/\/www.shokubai.co.jp\/en\/wp-json\/wp\/v2\/particle\/13661"}],"collection":[{"href":"https:\/\/www.shokubai.co.jp\/en\/wp-json\/wp\/v2\/particle"}],"about":[{"href":"https:\/\/www.shokubai.co.jp\/en\/wp-json\/wp\/v2\/types\/particle"}],"author":[{"embeddable":true,"href":"https:\/\/www.shokubai.co.jp\/en\/wp-json\/wp\/v2\/users\/4"}],"version-history":[{"count":53,"href":"https:\/\/www.shokubai.co.jp\/en\/wp-json\/wp\/v2\/particle\/13661\/revisions"}],"predecessor-version":[{"id":18980,"href":"https:\/\/www.shokubai.co.jp\/en\/wp-json\/wp\/v2\/particle\/13661\/revisions\/18980"}],"wp:attachment":[{"href":"https:\/\/www.shokubai.co.jp\/en\/wp-json\/wp\/v2\/media?parent=13661"}],"wp:term":[{"taxonomy":"cat_particle","embeddable":true,"href":"https:\/\/www.shokubai.co.jp\/en\/wp-json\/wp\/v2\/cat_particle?post=13661"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}