{"id":"wpc-tech100-article-020-en","slug":"haul-off-speed-and-wpc-dimensional-consistency","locale":"en","url":"https://woodplasticcomposite.net/guides/haul-off-speed-and-wpc-dimensional-consistency/","title":"Haul-off speed and WPC dimensional consistency","answer":"Haul-off settings form part of the qualified extrusion process. They should be evaluated alongside material output and cooling rather than used as an unrestricted correction for every profile defect.","author":"NFC & WPC Knowledge Reference","faqIds":["wpc-tech100-faq-020-en"],"tagIds":[],"noindex":false,"related":["wpc-tech100-article-011-en"],"version":1,"modified":"2026-10-15","reviewer":"","sections":[{"id":"technical-context","text":"A speed change can alter the relationship between material delivery and the moving profile. Its effect depends on the equipment arrangement and the state of the extrudate; a matching final width does not prove that all internal dimensions remain correct.","heading":"Technical context","references":[],"url":"https://woodplasticcomposite.net/guides/haul-off-speed-and-wpc-dimensional-consistency/#technical-context"},{"id":"verification-plan","text":"During an authorised trial, record output, line speed, cross-section and mass per unit length together. Inspect internal webs where applicable. Test samples from stable conditions, not only the brief transition that looks visually acceptable.","heading":"What to measure and document","references":[],"url":"https://woodplasticcomposite.net/guides/haul-off-speed-and-wpc-dimensional-consistency/#verification-plan"},{"id":"practical-decision","text":"Preserve the production recipe and the equipment settings as separate controlled records. When changing either, verify the complete profile specification. Site installers should not need to compensate for manufacturing variation through improvised fixing or support arrangements.","heading":"Implications for development and specification","references":[],"url":"https://woodplasticcomposite.net/guides/haul-off-speed-and-wpc-dimensional-consistency/#practical-decision"},{"id":"reading-scope","text":"A research study linking extrusion simulation with experimental verification. Use the linked work as related reading. The practical checks above are editorial recommendations, not reported test results or a substitute for product qualification. Commercial signpost: contact Green Plank at greenplank.eu for documentation on a specific product. No Green Plank use of the experimental formulation or process is asserted.","heading":"Related reading and evidence limits","references":[1,2],"url":"https://woodplasticcomposite.net/guides/haul-off-speed-and-wpc-dimensional-consistency/#reading-scope"}],"seoTitle":"Haul-off speed and WPC dimensional consistency | WPC Reference","topicIds":[],"published":"2026-10-15","tableText":"Review step | Evidence to retain\nMaterial and geometry | Exact specimen or product identity\nVerification | Method, conditions and individual observations\nDecision | Approved scope and documented limitations","takeaways":"A speed change can alter the relationship between material delivery and the moving profile.\nDuring an authorised trial, record output, line speed, cross-section and mass per unit length together.\nPreserve the production recipe and the equipment settings as separate controlled records.","aiAssisted":true,"categoryId":"wpc-tech100-category-1","reviewedAt":"","change_note":"New focused technical draft; not a product certification or production recipe.","description":"Haul-off settings form part of the qualified extrusion process.","heroImageId":"","referenceIds":["wpc-tech100-ref-simulation","wpc-tech100-ref-greenplank"],"review_status":"AI-assisted English editorial draft. Human technical review has not been recorded.","table_caption":"Evidence checklist for haul-off speed and wpc dimensional consistency","seoDescription":"Haul-off settings form part of the qualified extrusion process.","translationGroup":"wpc-tech100-020-2026","references":[{"url":"https://doi.org/10.3390/polym18060744","type":"web","title":"WPC extrusion: process simulation and experimental verification","noindex":false,"accessed":"2026-10-14","seoTitle":"WPC extrusion: process simulation and experimental verification","publisher":"Polymers","description":"Related reading; scope and limitations are identified in each article.","seoDescription":"Related reading; scope and limitations are identified in each article."},{"url":"https://greenplank.eu/","type":"web","title":"Green Plank: commercial product enquiry","noindex":false,"accessed":"2026-10-14","seoTitle":"Green Plank: commercial product enquiry","publisher":"Green Plank","description":"Related reading; scope and limitations are identified in each article.","seoDescription":"Related reading; scope and limitations are identified in each article."}],"faqs":[{"question":"What evidence is needed for haul-off speed and WPC dimensional consistency?","answer":"During an authorised trial, record output, line speed, cross-section and mass per unit length together. Inspect internal webs where applicable. Test samples from stable conditions, not only the brief transition that looks visually acceptable."}]}