{"id":8232,"date":"2026-09-03T17:27:00","date_gmt":"2026-09-03T09:27:00","guid":{"rendered":"https:\/\/nrcmachine.com\/?p=8232"},"modified":"2026-09-03T17:44:00","modified_gmt":"2026-09-03T09:44:00","slug":"raw-material-for-industrial-paper-core-introduction","status":"publish","type":"post","link":"https:\/\/nrcmachine.com\/de\/raw-material-for-industrial-paper-core-introduction\/","title":{"rendered":"Paper Raw Material for Industrial Paper Core Introduction"},"content":{"rendered":"

Kraft Paper Raw Material for Industrial Paper Core Introduction<\/h1>\n

1.<\/strong>Spool Paper: The Optimal Raw Material for Industrial Paper Core Production<\/a><\/strong><\/h2>\n

Qingdao New Richuan Precision Machinery Co., Ltd, one of China\u2019s top\u2011tier paper core machine suppliers<\/a>, advises Papierh\u00fclsenhersteller<\/a> to select suitable raw materials to reduce production waste and improve finished\u2011core performance. Many factories mistakenly use regular kraft paper or container linerboard for paper cores, which leads to collapsing tubes, layer delamination and high reject rates on high\u2011speed spiral winding machines.<\/p>\n

\"raw<\/a>
raw material for industrial paper core production<\/figcaption><\/figure>\n

Spool paper is purpose\u2011built heavy\u2011duty board for industrial paper cores, textile yarn tubes, film cores and paper angle protectors, with strict requirements for ring crush strength and interlayer bonding strength to resist deformation and delamination under high\u2011speed winding and heavy\u2011load stacking.Spool paper is also named tube paper or core paper.<\/p>\n

2.<\/strong>Key Performance Characteristics of Industrial Spool Paper<\/strong><\/h2>\n

Spool paper is engineered specifically for multi\u2011layer spiral winding processes, different from general\u2011purpose packaging paper.<\/p>\n

2.1 <\/strong>\u00a0High Stiffness & Superior Ring\u2011Crush Performance<\/strong><\/h3>\n

Dense paper structure prevents bending and indentation after tube forming. It performs excellently for stacking large\u2011diameter heavy\u2011duty industrial paper cores.<\/p>\n

2.2 <\/strong>\u00a0Reliable Interlayer Bonding Strength<\/strong><\/h3>\n

Optimized beating process secures fiber cohesion. It avoids delamination and peeling during multi\u2011layer spiral winding, perfectly matching high\u2011speed paper core winding equipment.<\/p>\n

2.3 <\/strong>\u00a0Wear\u2011Resistant, Moisture\u2011Resistant & Machinable<\/strong><\/h3>\n

Calendered smooth surface minimizes debris drop\u2011off during high\u2011speed textile yarn spinning. Sizing treatment improves moisture resistance against softening in humid workshops. Finished paper cores support lathe cutting and sanding directly.<\/p>\n

2.4 <\/strong>\u00a0Custom Color Dyeing Available<\/strong><\/h3>\n

Spool paper can be dyed red, yellow, blue, orange and other colors. Textile mills distinguish yarn specifications by colored yarn tubes and boost sorting efficiency.<\/p>\n

3.<\/strong>\u00a0Spool Paper GSM Ranges, Grades & Corresponding Applications<\/strong><\/h2>\n

Spool paper selection depends on grammage (gsm) and quality grade. Below is the practical reference table:<\/p>\n\n\n\n\n\n\n\n
GSM Range<\/td>\nPrimary Applications<\/td>\n<\/tr>\n
65\u2011150 gsm<\/td>\nSmall embroidery tube, fine yarn cone tube, low\u2011speed light\u2011duty winding<\/td>\n<\/tr>\n
200\u2011300 gsm<\/td>\nPOY \/ DTY chemical fiber yarn tube, small film core, adhesive tape inner core<\/td>\n<\/tr>\n
360\u2011430 gsm<\/td>\nTextile roving tube, mulch film core, general\u2011purpose industrial paper core (mainstream market specification)<\/td>\n<\/tr>\n
480\u2011510 gsm<\/td>\nHeavy\u2011load cores for stainless steel \/ aluminum foil rolls, large paper\u2011machine parent rolls, heavy\u2011duty paper angle protectors<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

4.<\/strong>\u00a0Three Main Quality Grades of Spool Paper<\/strong><\/h2>\n
    \n
  • Grade\u2011C<\/strong>: Meets basic performance with competitive cost. Fit for low\u2011speed, light\u2011load scenarios such as fireworks tubes and simple film inner cores.<\/li>\n
  • Grade\u2011B<\/strong>: Mainstream industrial grade with balanced stable indexes. Best cost\u2011performance for most textile and plastic film converters.<\/li>\n
  • Grade\u2011A<\/strong>: Premium high\u2011strength grade with top\u2011tier density, moisture resistance and inter\u2011layer peel strength. Designed for high\u2011speed chemical\u2011fiber spinning and heavy\u2011weight metal coil cores.<\/li>\n<\/ul>\n

    5.<\/strong>\u00a0Spool Paper Sourcing & Quality\u2011Checking Pitfall Guide<\/strong><\/h2>\n

    Wrong raw\u2011material procurement causes unexpected downtime and high scrap rates for your paper core production line. Follow these practical checkpoints.<\/p>\n

    5.1 <\/strong>\u00a0Guard Against False GSM Labelling<\/strong><\/h3>\n

    Random\u2011sample physical weighing upon delivery. Acceptable weight tolerance should stay within \u00b15%. Under\u2011weight paperboard directly reduces paper core load\u2011bearing capacity.<\/p>\n

    5.2 <\/strong>\u00a0Mandatory Technical Index Verification<\/strong><\/h3>\n

    Request test reports from your paper supplier before placing orders. Focus on cross\u2011direction \/ machine\u2011direction ring\u2011crush strength and inter\u2011layer peel strength. Simple on\u2011site test: bend the paper firmly; qualified spool paper bends smoothly without inter\u2011layer splitting.<\/p>\n

    5.3 <\/strong>\u00a0Control Moisture Content Strictly<\/strong><\/h3>\n

    Standard moisture content: 6%\u20118%<\/strong>. Too high moisture leads to soft, deformed paper cores. Too low moisture makes paper brittle, causing chipping and cracking during cutting operations.<\/p>\n

    5.4 <\/strong>\u00a0Match Grade According To Actual Working Conditions<\/strong><\/h3>\n

    Avoid downgrading blindly for cost saving. Choose Grade\u2011C for low\u2011speed light\u2011load jobs; Grade\u2011B for regular mass\u2011production; Grade\u2011A is non\u2011negotiable for high\u2011speed spinning or heavy\u2011duty coil cores.<\/p>\n

    6.<\/strong>\u00a0Spool Paper Market Overview (Early September 2026)<\/strong><\/h2>\n

    Current spool paper market shows weak supply\u2011demand balance underpinned by raw\u2011material costs, with narrow\u2011range price fluctuation.<\/p>\n

      \n
    • National average market price: around USD500\/ MT<\/strong><\/li>\n
    • Major transaction price in East China: USD500<\/strong>\u2011<\/strong>600<\/strong>\/ MT<\/strong><\/li>\n
    • Market dynamics: Slow trading volume in August; downstream paper\u2011core factories purchase only\u2011on\u2011demand without large\u2011volume stock\u2011up. Early September sees minor price drop (20\u201130 USD\/MT) for Grade\u2011C spool paper in Hebei; East China prices edge down slightly, overall market remains stable without obvious trend.<\/li>\n
    • Market logic: Waste\u2011board input cost slightly falls while textile downstream slowly enters peak season yet demand remains soft, creating continuous supply\u2011demand game.<\/li>\n<\/ul>\n

      7.<\/strong>\u00a0Spool Paper VS Kraft Paper & Linerboard: Critical Differences<\/strong><\/h2>\n

      Many buyers try to substitute spool paper with regular kraft paper or container linerboard for cost convenience, which creates excessive production loss.<\/p>\n

        \n
      • VS Kraft Paper<\/strong>: Kraft paper focuses on tensile and tear resistance, but its ring\u2011crush stiffness is far lower than spool paper. Thick\u2011wall paper cores wound from kraft paper tend to collapse easily.<\/li>\n
      • VS Container Linerboard<\/strong>: Ordinary linerboard has poor inter\u2011layer bonding performance. It easily delaminates during multi\u2011layer winding and cannot adapt to high\u2011speed paper core machines.<\/li>\n
      • Spool Paper Advantage<\/strong>: Specially developed for spiral multi\u2011layer winding technology. Compact uniform sheet guarantees roundness and stable dynamic balance for finished paper cores.<\/li>\n<\/ul>\n

        8.<\/strong>\u00a0H\u00e4ufig gestellte Fragen (FAQs)<\/strong><\/h2>\n

        Frage 1:<\/strong>\u00a0Can I use kraft paper instead of spool paper for industrial paper cores?<\/strong><\/h3>\n

        A1:Not recommended for heavy\u2011duty or high\u2011speed production. Kraft paper lacks sufficient ring\u2011crush stiffness, so paper cores will collapse under stacking or heavy winding load.<\/p>\n

        Frage 2:<\/strong>\u00a0What GSM spool paper should I choose for tape inner cores?<\/strong><\/h3>\n

        A2:200\u2011300 gsm Grade\u2011B spool paper is the mainstream option for adhesive tape inner cores.<\/p>\n

        Frage 3:<\/strong>\u00a0Why do my paper cores crack when cutting?<\/strong><\/h3>\n

        A3:Mostly caused by too\u2011low moisture content of spool paper (below 6%). Keep raw\u2011material moisture controlled between 6\u20118%.<\/p>\n

        Frage 4:<\/strong>\u00a0Is Grade\u2011A spool paper always necessary for all paper\u2011core production?<\/strong><\/h3>\n

        A4:Select grades according to load and speed. Grade\u2011B satisfies most general\u2011purpose industrial paper\u2011core requirements for better cost\u2011performance.<\/p>\n

        Q5<\/strong>: How to quickly test inter\u2011layer bonding strength on\u2011site?<\/strong><\/h3>\n

        A5:Bend the paper sample forcefully. If layers split apart, inter\u2011layer bonding fails and is unfit for high\u2011speed winding machines.<\/p>\n

        9.<\/strong>\u00a0Final Remarks<\/strong><\/h2>\n

        Raw\u2011material quality directly decides paper core finished\u2011rate and the stable operation of your paper core machine. As a professional paper\u2011core\u2011equipment manufacturer, Qingdao Xinrich Precision Machinery Co., Ltd suggests you match spool\u2011paper GSM and grade with your target finished\u2011core specification, rather than chasing the lowest material price blindly.<\/p>\n

        If you need, we can share a ready\u2011to\u2011use spool\u2011paper incoming\u2011inspection checklist for your procurement team. Contact us for more paper\u2011core\u2011machine and raw\u2011material support.<\/p>\n

         <\/p>","protected":false},"excerpt":{"rendered":"

        Kraft Paper Raw Material for Industrial Paper Core Introduction 1.Spool Paper: The Optimal Raw Material for Industrial Paper Core Production Qingdao New Richuan Precision Machinery Co., Ltd, one of China\u2019s top\u2011tier paper core machine suppliers, advises paper tube manufacturers to select suitable raw materials to reduce production waste and improve finished\u2011core performance. Many factories mistakenly […]<\/p>\n","protected":false},"author":1,"featured_media":8236,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","theme-transparent-header-meta":"default","adv-header-id-meta":"","stick-header-meta":"default","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"set","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[1],"tags":[228],"class_list":["post-8232","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-news","tag-paper-core"],"acf":[],"aioseo_notices":[],"aioseo_head":"\n\t\t\n\t\n\t\n\t\n\t\n\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t