{"id":1268,"date":"2026-11-04T15:57:49","date_gmt":"2026-11-04T07:57:49","guid":{"rendered":"https:\/\/eggtraym.com\/?post_type=info&#038;p=1268"},"modified":"2026-11-04T15:59:23","modified_gmt":"2026-11-04T07:59:23","slug":"egg-tray-machine-fix-soft-trays-pulp-formula","status":"publish","type":"info","link":"https:\/\/eggtraym.com\/el\/Info\/egg-tray-machine-fix-soft-trays-pulp-formula\/","title":{"rendered":"How to Fix Soft Egg Trays? Practical Pulp Formulation Adjustments"},"content":{"rendered":"<div class=\"kk-star-ratings kksr-auto kksr-align-left kksr-valign-top\"\n    data-payload='{&quot;align&quot;:&quot;left&quot;,&quot;id&quot;:&quot;1268&quot;,&quot;slug&quot;:&quot;default&quot;,&quot;valign&quot;:&quot;top&quot;,&quot;ignore&quot;:&quot;&quot;,&quot;reference&quot;:&quot;auto&quot;,&quot;class&quot;:&quot;&quot;,&quot;count&quot;:&quot;82&quot;,&quot;legendonly&quot;:&quot;&quot;,&quot;readonly&quot;:&quot;&quot;,&quot;score&quot;:&quot;4.9&quot;,&quot;starsonly&quot;:&quot;&quot;,&quot;best&quot;:&quot;5&quot;,&quot;gap&quot;:&quot;5&quot;,&quot;greet&quot;:&quot;Rate this info&quot;,&quot;legend&quot;:&quot;4.9\\\/5 - (82 votes)&quot;,&quot;size&quot;:&quot;24&quot;,&quot;title&quot;:&quot;How to Fix Soft Egg Trays? Practical Pulp Formulation Adjustments&quot;,&quot;width&quot;:&quot;139.6&quot;,&quot;_legend&quot;:&quot;{score}\\\/{best} - ({count} {votes})&quot;,&quot;font_factor&quot;:&quot;1.25&quot;}'>\n            \n<div class=\"kksr-stars\">\n    \n<div class=\"kksr-stars-inactive\">\n            <div class=\"kksr-star\" data-star=\"1\" style=\"padding-right: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 24px; height: 24px;\"><\/div>\n        <\/div>\n            <div class=\"kksr-star\" data-star=\"2\" style=\"padding-right: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 24px; height: 24px;\"><\/div>\n        <\/div>\n            <div class=\"kksr-star\" data-star=\"3\" style=\"padding-right: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 24px; height: 24px;\"><\/div>\n        <\/div>\n            <div class=\"kksr-star\" data-star=\"4\" style=\"padding-right: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 24px; height: 24px;\"><\/div>\n        <\/div>\n            <div class=\"kksr-star\" data-star=\"5\" style=\"padding-right: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 24px; height: 24px;\"><\/div>\n        <\/div>\n    <\/div>\n    \n<div class=\"kksr-stars-active\" style=\"width: 139.6px;\">\n            <div class=\"kksr-star\" style=\"padding-right: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 24px; height: 24px;\"><\/div>\n        <\/div>\n            <div class=\"kksr-star\" style=\"padding-right: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 24px; height: 24px;\"><\/div>\n        <\/div>\n            <div class=\"kksr-star\" style=\"padding-right: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 24px; height: 24px;\"><\/div>\n        <\/div>\n            <div class=\"kksr-star\" style=\"padding-right: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 24px; height: 24px;\"><\/div>\n        <\/div>\n            <div class=\"kksr-star\" style=\"padding-right: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 24px; height: 24px;\"><\/div>\n        <\/div>\n    <\/div>\n<\/div>\n                \n\n<div class=\"kksr-legend\" style=\"font-size: 19.2px;\">\n            4.9\/5 - (82 votes)    <\/div>\n    <\/div>\n\n<p class=\"wp-block-paragraph\">Soft, low-rigidity egg trays that bend easily are a common headache for operators using an egg tray machine. This issue usually comes from unsuitable pulp formulas, instead of machine faults. Below are practical, testable adjustments you can apply on your production line step by step.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Choose the right fiber blend<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Pure recycled cardboard pulp alone often makes egg trays soft and fragile. A reliable and economical mixing ratio is <strong>80% recycled OCC pulp + 20% long-fiber wood pulp<\/strong>.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Long fibers create stronger inter-fiber bonding and improve compression stiffness<\/li>\n\n\n\n<li>Avoid excessive refining. Over-beating cuts fiber length and reduces the final strength<\/li>\n\n\n\n<li>Keep your raw material source stable. Mixed low-grade waste paper will cause inconsistent stiffness between batches<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">Stabilize pulp concentration for egg tray machine<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Slurry solid content directly affects the density of egg trays formed by your <strong><em><a href=\"https:\/\/eggtraym.com\/el\/product\/automatic-egg-tray-machine\/\">industrial egg tray machine<\/a><\/em><\/strong>. The ideal range for most standard lines is <strong>3%\u20135%<\/strong>.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Too dilute: fewer fibers deposit on the mold, producing lightweight, soft trays<\/li>\n\n\n\n<li>Too thick: water drains slowly during forming, leading to uneven wall thickness and defects<\/li>\n\n\n\n<li>Run small batch tests and standardize water feeding to avoid frequent concentration swings<\/li>\n<\/ul>\n\n\n\n<figure class=\"wp-block-gallery has-nested-images columns-default is-cropped wp-block-gallery-1 is-layout-flex wp-block-gallery-is-layout-flex\">\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"720\" height=\"540\" data-id=\"1269\" src=\"https:\/\/eggtraym.com\/wp-content\/uploads\/2026\/11\/automatic-egg-tray-production-machine-factory.webp\" alt=\"automatic egg tray production machine factory\" class=\"wp-image-1269\" title=\"\" srcset=\"https:\/\/eggtraym.com\/wp-content\/uploads\/2026\/11\/automatic-egg-tray-production-machine-factory.webp 720w, https:\/\/eggtraym.com\/wp-content\/uploads\/2026\/11\/automatic-egg-tray-production-machine-factory-300x225.webp 300w, https:\/\/eggtraym.com\/wp-content\/uploads\/2026\/11\/automatic-egg-tray-production-machine-factory-16x12.webp 16w\" sizes=\"auto, (max-width: 720px) 100vw, 720px\" \/><figcaption class=\"wp-element-caption\">Automatic Egg Tray Production Machine Factory<\/figcaption><\/figure>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"720\" height=\"540\" data-id=\"1270\" src=\"https:\/\/eggtraym.com\/wp-content\/uploads\/2026\/11\/egg-tray-machine-mold-closeup.webp\" alt=\"egg tray machine mold closeup\" class=\"wp-image-1270\" title=\"\" srcset=\"https:\/\/eggtraym.com\/wp-content\/uploads\/2026\/11\/egg-tray-machine-mold-closeup.webp 720w, https:\/\/eggtraym.com\/wp-content\/uploads\/2026\/11\/egg-tray-machine-mold-closeup-300x225.webp 300w, https:\/\/eggtraym.com\/wp-content\/uploads\/2026\/11\/egg-tray-machine-mold-closeup-16x12.webp 16w\" sizes=\"auto, (max-width: 720px) 100vw, 720px\" \/><figcaption class=\"wp-element-caption\">Egg Tray Machine Mold Closeup<\/figcaption><\/figure>\n<\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">Add strength agents properly<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Dry strength agents are a simple way to boost stiffness without overhauling your fiber formula.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Pour the additive evenly into the pulping tank for homogeneous mixing<\/li>\n\n\n\n<li>Control dosage carefully. Too much additive increases production cost and slows drainage on the mold<\/li>\n\n\n\n<li>Complete full stirring before the slurry flows into the forming section<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">Match formula with drying curve<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Even a well-tuned pulp formula will fail if <strong><em><a href=\"https:\/\/eggtraym.com\/el\/product\/egg-tray-dryer\/\">paper tray drying machine<\/a><\/em><\/strong> parameters are wrong. High residual moisture keeps trays flexible and weak.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Use staged heating: evaporate surface moisture at a lower temperature first, then raise heat gradually<\/li>\n\n\n\n<li><strong><em><a href=\"https:\/\/eggtraym.com\/el\/product\/egg-tray-hot-press-machine\/\">Hot pressing<\/a><\/em><\/strong> after drying is an optional upgrade, which can greatly improve surface rigidity for high-end orders<\/li>\n<\/ul>\n\n\n\n<figure class=\"wp-block-gallery has-nested-images columns-default is-cropped wp-block-gallery-2 is-layout-flex wp-block-gallery-is-layout-flex\">\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"540\" height=\"720\" data-id=\"1271\" src=\"https:\/\/eggtraym.com\/wp-content\/uploads\/2026\/11\/custom-pulp-molded-packaging-trays.webp\" alt=\"custom pulp molded packaging trays\" class=\"wp-image-1271\" title=\"\" srcset=\"https:\/\/eggtraym.com\/wp-content\/uploads\/2026\/11\/custom-pulp-molded-packaging-trays.webp 540w, https:\/\/eggtraym.com\/wp-content\/uploads\/2026\/11\/custom-pulp-molded-packaging-trays-225x300.webp 225w, https:\/\/eggtraym.com\/wp-content\/uploads\/2026\/11\/custom-pulp-molded-packaging-trays-9x12.webp 9w\" sizes=\"auto, (max-width: 540px) 100vw, 540px\" \/><figcaption class=\"wp-element-caption\">Custom Pulp Molded Packaging Trays<\/figcaption><\/figure>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"540\" height=\"720\" data-id=\"1272\" src=\"https:\/\/eggtraym.com\/wp-content\/uploads\/2026\/11\/recycled-paper-egg-carton-pulp-tray.webp\" alt=\"recycled paper egg carton pulp tray\" class=\"wp-image-1272\" title=\"\" srcset=\"https:\/\/eggtraym.com\/wp-content\/uploads\/2026\/11\/recycled-paper-egg-carton-pulp-tray.webp 540w, https:\/\/eggtraym.com\/wp-content\/uploads\/2026\/11\/recycled-paper-egg-carton-pulp-tray-225x300.webp 225w, https:\/\/eggtraym.com\/wp-content\/uploads\/2026\/11\/recycled-paper-egg-carton-pulp-tray-9x12.webp 9w\" sizes=\"auto, (max-width: 540px) 100vw, 540px\" \/><figcaption class=\"wp-element-caption\">Recycled Paper Egg Carton Pulp Tray<\/figcaption><\/figure>\n<\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">Practical testing suggestion<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">When adjusting settings on your egg tray machine, change only one factor each time. Record key data including tray weight, moisture content and stiffness after each trial. This method helps you lock in the most suitable pulp recipe matching your local waste paper materials and workshop environment.<\/p>","protected":false},"excerpt":{"rendered":"<p>Get workable solutions for soft egg tray issues on your egg tray machine. Learn pulp blending rules, slurry concentration and strength agent tips to improve finished tray stiffness.<\/p>","protected":false},"author":1,"featured_media":1273,"parent":0,"template":"","tags":[41,42],"info-type":[10],"class_list":["post-1268","info","type-info","status-publish","has-post-thumbnail","hentry","tag-egg-tray","tag-paper-tray","info-type-news"],"_links":{"self":[{"href":"https:\/\/eggtraym.com\/el\/wp-json\/wp\/v2\/info\/1268","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/eggtraym.com\/el\/wp-json\/wp\/v2\/info"}],"about":[{"href":"https:\/\/eggtraym.com\/el\/wp-json\/wp\/v2\/types\/info"}],"author":[{"embeddable":true,"href":"https:\/\/eggtraym.com\/el\/wp-json\/wp\/v2\/users\/1"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/eggtraym.com\/el\/wp-json\/wp\/v2\/media\/1273"}],"wp:attachment":[{"href":"https:\/\/eggtraym.com\/el\/wp-json\/wp\/v2\/media?parent=1268"}],"wp:term":[{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/eggtraym.com\/el\/wp-json\/wp\/v2\/tags?post=1268"},{"taxonomy":"info-type","embeddable":true,"href":"https:\/\/eggtraym.com\/el\/wp-json\/wp\/v2\/info-type?post=1268"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}