{"id":6487,"date":"2026-03-10T11:48:19","date_gmt":"2026-03-10T10:48:19","guid":{"rendered":"https:\/\/tevipa.com\/blog\/?p=6487"},"modified":"2026-03-10T11:48:21","modified_gmt":"2026-03-10T10:48:21","slug":"la-boina-2","status":"publish","type":"post","link":"https:\/\/tevipa.com\/blog\/ca\/la-boina-2\/","title":{"rendered":"La boina"},"content":{"rendered":"<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"512\" height=\"512\" src=\"https:\/\/tevipa.com\/blog\/wp-content\/uploads\/2025\/07\/logo512.png\" alt=\"Logo C\u00f3mo Cubrir un Cuerpo\" class=\"wp-image-6\" style=\"width:270px;height:auto\" srcset=\"https:\/\/tevipa.com\/blog\/wp-content\/uploads\/2025\/07\/logo512.png 512w, https:\/\/tevipa.com\/blog\/wp-content\/uploads\/2025\/07\/logo512-300x300.png 300w, https:\/\/tevipa.com\/blog\/wp-content\/uploads\/2025\/07\/logo512-150x150.png 150w\" sizes=\"auto, (max-width: 512px) 100vw, 512px\" \/><\/figure>\n<\/div>\n\n\n<h1 class=\"wp-block-heading has-text-align-center\">La boina<br>Sistema geom\u00e8tric param\u00e8tric de construcci\u00f3<\/h1>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"700\" height=\"394\" src=\"https:\/\/tevipa.com\/blog\/wp-content\/uploads\/2026\/03\/titulo.png\" alt=\"Variants de boina en diferents colors mostrant vista frontal, perfil, plat superior i estructura interior amb folre i badana.\" class=\"wp-image-6348\" srcset=\"https:\/\/tevipa.com\/blog\/wp-content\/uploads\/2026\/03\/titulo.png 700w, https:\/\/tevipa.com\/blog\/wp-content\/uploads\/2026\/03\/titulo-300x169.png 300w\" sizes=\"auto, (max-width: 700px) 100vw, 700px\" \/><\/figure>\n<\/div>\n\n\n<h2 class=\"wp-block-heading text-justify has-medium-font-size\">Origen i hist\u00f2ria de la boina<\/h2>\n\n\n\n<p class=\"text-justify\">La boina \u00e9s una de les peces de cap m\u00e9s antigues d\u2019Europa. Tot i que avui sol associar-se al Pa\u00eds Basc i al sud de Fran\u00e7a, la seva forma \u2014un gorro circular de llana o feltre que s\u2019adapta al cap\u2014 t\u00e9 antecedents molt m\u00e9s antics.<\/p>\n\n\n\n<p class=\"text-justify\">Al m\u00f3n mediterrani ja apareixen tocats arrodonits molt semblants en representacions etrusques, gregues i romanes, generalment realitzats en llana o feltre. Encara no s\u00f3n boines en el sentit modern, per\u00f2 comparteixen la mateixa l\u00f2gica: una pe\u00e7a t\u00e8xtil flexible, sense ala r\u00edgida, que cobreix el cap amb una forma circular.<\/p>\n\n\n\n<p class=\"text-justify\">Es pot veure una visi\u00f3 general d\u2019aquests precedents i de l\u2019evoluci\u00f3 del \u201cb\u00e9ret\u201d (boina) en la hist\u00f2ria del tocat europeu aqu\u00ed:<br><a href=\"https:\/\/en.wikipedia.org\/wiki\/Beret?utm_source=chatgpt.com\">https:\/\/en.wikipedia.org\/wiki\/Beret<\/a><\/p>\n\n\n\n<p class=\"text-justify\">Durant l\u2019edat mitjana i el Renaixement apareixen sovint gorres arrodonides molt semblants en pintures flamenques, italianes i alemanyes. Camperols, artesans i fins i tot alguns burgesos s\u00f3n representats amb tocats de llana tova que anticipen clarament la forma de la boina contempor\u00e0nia.<\/p>\n\n\n\n<p class=\"text-justify\">Tanmateix, la boina tal com la coneixem avui es va consolidar sobretot a les regions muntanyoses dels Pirineus, a la frontera entre Fran\u00e7a i Espanya. All\u00e0 va ser utilitzada durant segles per pastors de Bearn, Navarra, Arag\u00f3 i el Pa\u00eds Basc, que necessitaven una pe\u00e7a resistent al fred, la pluja i el vent.<\/p>\n\n\n\n<p class=\"text-justify\">Aquestes gorres es fabricaven a partir de llana teixida que posteriorment s\u2019enfeltrava. L\u2019enfeltrat compactava la fibra i produ\u00efa un teixit dens, c\u00e0lid i relativament impermeable, ideal per al treball a l\u2019aire lliure.<\/p>\n\n\n\n<p class=\"text-justify\">A partir del segle XIX la producci\u00f3 va comen\u00e7ar a industrialitzar-se al sud de Fran\u00e7a, especialment en localitats com Nay i Oloron-Sainte-Marie, que es van convertir en centres hist\u00f2rics de fabricaci\u00f3. A Nay es pot visitar avui el museu dedicat a aquesta tradici\u00f3:<br><a href=\"https:\/\/www.museeduberet.com\/nouveautes\/166-1194-eridan-.html\">https:\/\/www.museeduberet.com\/nouveautes\/166-1194-eridan-.html<\/a><\/p>\n\n\n\n<p class=\"text-justify\">Des d\u2019aleshores la boina es va difondre per tota Europa i posteriorment per la resta del m\u00f3n, adoptada tant per treballadors i camperols com per artistes, militars i dissenyadors.<\/p>\n\n\n\n<p class=\"text-justify\">Avui continua fabricant-se en la seva forma tradicional de llana enfeltrada, per\u00f2 tamb\u00e9 apareix en molts altres teixits \u2014drap cosit, cot\u00f3, lli o barreges t\u00e8cniques\u2014 que permeten construir-la mitjan\u00e7ant patronatge pla.<\/p>\n\n\n\n<p class=\"text-justify\">\u00c9s precisament aquesta variant, constru\u00efda a partir d\u2019un patr\u00f3 geom\u00e8tric, la que ens interessa en aquest article.<\/p>\n\n\n\n<h2 class=\"wp-block-heading text-justify has-medium-font-size\">El petit misteri de la \u201ccueta\u201d<\/h2>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"700\" height=\"394\" src=\"https:\/\/tevipa.com\/blog\/wp-content\/uploads\/2026\/03\/senorita.png\" alt=\"Retrat d\u2019una dona jove amb boina clara on es veu el petit rabet central del plat superior.\" class=\"wp-image-6355\" srcset=\"https:\/\/tevipa.com\/blog\/wp-content\/uploads\/2026\/03\/senorita.png 700w, https:\/\/tevipa.com\/blog\/wp-content\/uploads\/2026\/03\/senorita-300x169.png 300w\" sizes=\"auto, (max-width: 700px) 100vw, 700px\" \/><\/figure>\n<\/div>\n\n\n<p class=\"text-justify\">Un dels trets m\u00e9s caracter\u00edstics de la boina \u00e9s el petit cord\u00f3 que apareix al centre del plat superior.<\/p>\n\n\n\n<p class=\"text-justify\">Aquest element, conegut en franc\u00e8s com <em>cabillou<\/em>, procedeix del proc\u00e9s tradicional de fabricaci\u00f3. Les boines es teixien inicialment com una pe\u00e7a circular de llana que es tancava al centre mitjan\u00e7ant un petit acabat del teixit. Quan la pe\u00e7a s\u2019enfeltrava i es donava forma al gorra, aquest petit extrem quedava visible a la part superior.<\/p>\n\n\n\n<p class=\"text-justify\">Amb el temps aquest detall va deixar de ser una simple conseq\u00fc\u00e8ncia t\u00e8cnica per convertir-se en un tret distintiu de la boina, que moltes peces continuen conservant fins i tot quan ja no \u00e9s necessari.<\/p>\n\n\n<style>.wp-block-kadence-spacer.kt-block-spacer-6487_2ae8f2-b2 .kt-block-spacer{height:30px;}.wp-block-kadence-spacer.kt-block-spacer-6487_2ae8f2-b2 .kt-divider{border-top-width:1px;height:1px;border-top-color:#eee;width:80%;border-top-style:solid;}<\/style>\n<div class=\"wp-block-kadence-spacer aligncenter kt-block-spacer-6487_2ae8f2-b2\"><div class=\"kt-block-spacer kt-block-spacer-halign-center\"><hr class=\"kt-divider\"\/><\/div><\/div>\n\n\n\n<h2 class=\"wp-block-heading text-justify has-medium-font-size\">De l\u2019objecte tradicional al sistema geom\u00e8tric<\/h2>\n\n\n\n<p class=\"text-justify\">Malgrat la seva llarga hist\u00f2ria, l\u2019estructura de la boina \u00e9s sorprenentment simple.<br>Des del punt de vista geom\u00e8tric pot descriure\u2019s com la difer\u00e8ncia entre dos contorns:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li class=\"text-justify\">un per\u00edmetre exterior que defineix el volum de la pe\u00e7a<\/li>\n\n\n\n<li class=\"text-justify\">un forat interior que determina l\u2019ajust sobre el cap<\/li>\n<\/ul>\n\n\n\n<p class=\"text-justify\">Aquesta simplicitat permet descriure la boina mitjan\u00e7ant un sistema geom\u00e8tric param\u00e8tric capa\u00e7 d\u2019adaptar-se a diferents talles, proporcions cranials i variants de disseny.<\/p>\n\n\n\n<p class=\"text-justify\">A les seccions seg\u00fcents analitzarem els elements que componen la boina i les variables necess\u00e0ries per construir-ne el patr\u00f3 amb precisi\u00f3.<\/p>\n\n\n\n<h2 class=\"wp-block-heading text-justify has-medium-font-size\">Descripci\u00f3 estructural i nomenclatura de la boina<\/h2>\n\n\n\n<p class=\"text-justify\">A efectes d\u2019aquest sistema geom\u00e8tric distingim les parts seg\u00fcents.<\/p>\n\n\n\n<p class=\"text-justify\">La boina \u00e9s una pe\u00e7a de cap composta per un element superior circular (plat) unit a un forat interior que defineix el per\u00edmetre d\u2019ajust sobre el cap.<\/p>\n\n\n\n<p class=\"text-justify\">En la seva construcci\u00f3 tradicional pot estar modelada en una sola pe\u00e7a, generalment de feltre, mentre que en patronatge pla es construeix mitjan\u00e7ant la uni\u00f3 de superf\u00edcies circulars o el\u00b7l\u00edptiques.<\/p>\n\n\n\n<h3 class=\"wp-block-heading text-justify has-medium-font-size\">Plat (P)<\/h3>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"700\" height=\"394\" src=\"https:\/\/tevipa.com\/blog\/wp-content\/uploads\/2026\/03\/nome001.png\" alt=\"Plat superior de la boina mostrat en perfil, vista superior i vista interior amb folre i badana.\" class=\"wp-image-6361\" srcset=\"https:\/\/tevipa.com\/blog\/wp-content\/uploads\/2026\/03\/nome001.png 700w, https:\/\/tevipa.com\/blog\/wp-content\/uploads\/2026\/03\/nome001-300x169.png 300w\" sizes=\"auto, (max-width: 700px) 100vw, 700px\" \/><\/figure>\n<\/div>\n\n\n<p class=\"text-justify\">Element superior de la boina.<\/p>\n\n\n\n<p class=\"text-justify\">Forma: circular o el\u00b7l\u00edptica.<\/p>\n\n\n\n<p class=\"text-justify\">Es defineix pel radi exterior (re) si \u00e9s circular, o pels eixos major (l) i menor (w) en el cas que sigui el\u00b7l\u00edptica.<\/p>\n\n\n\n<p class=\"text-justify\">El plat determina el vol visual i el volum de la pe\u00e7a.<\/p>\n\n\n\n<p class=\"text-justify\">En boines de teixit cosit presenta una costura perimetral al seu marge.<\/p>\n\n\n\n<h3 class=\"wp-block-heading text-justify has-medium-font-size\">Ala o vol (A)<\/h3>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"700\" height=\"394\" src=\"https:\/\/tevipa.com\/blog\/wp-content\/uploads\/2026\/03\/nome002.png\" alt=\"Ala o vol de la boina mostrant perfil, vista superior i estructura interior entre el plat exterior i el buit d\u2019ajust.\" class=\"wp-image-6369\" srcset=\"https:\/\/tevipa.com\/blog\/wp-content\/uploads\/2026\/03\/nome002.png 700w, https:\/\/tevipa.com\/blog\/wp-content\/uploads\/2026\/03\/nome002-300x169.png 300w\" sizes=\"auto, (max-width: 700px) 100vw, 700px\" \/><\/figure>\n<\/div>\n\n\n<p class=\"text-justify\">Definim l\u2019ala com la pe\u00e7a que integra la difer\u00e8ncia radial entre el marge exterior del plat i el forat interior.<\/p>\n\n\n\n<p class=\"text-justify\">El fortat interior \u00e9s l\u2019obertura per la qual la boina s\u2019ajusta al cap.<\/p>\n\n\n\n<p class=\"text-justify\">Pot ser circular o el\u00b7l\u00edptic.<\/p>\n\n\n\n<p class=\"text-justify\">El buit circular es defineix pel radi te\u00f2ric (<strong>rt<\/strong>), mentre que el buit el\u00b7l\u00edptic es defineix pels semieixos anteroposterior (<strong>l\/2<\/strong>) i bilateral (<strong>w\/2<\/strong>) del cap.<\/p>\n\n\n\n<p class=\"text-justify\">La talla de la boina s\u2019identifica amb el buit interior, que correspon al contorn del cap (<strong>k<\/strong>).<\/p>\n\n\n\n<h3 class=\"wp-block-heading text-justify has-medium-font-size\">Badana<\/h3>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"700\" height=\"394\" src=\"https:\/\/tevipa.com\/blog\/wp-content\/uploads\/2026\/03\/nome004.png\" alt=\"Badana o cinta de suor visible a l\u2019interior de la boina al voltant del contorn d\u2019ajust.\" class=\"wp-image-6377\" srcset=\"https:\/\/tevipa.com\/blog\/wp-content\/uploads\/2026\/03\/nome004.png 700w, https:\/\/tevipa.com\/blog\/wp-content\/uploads\/2026\/03\/nome004-300x169.png 300w\" sizes=\"auto, (max-width: 700px) 100vw, 700px\" \/><\/figure>\n<\/div>\n\n\n<p class=\"text-justify\">En confecci\u00f3, capelleria i marroquineria, la badana \u00e9s una banda flexible col\u00b7locada a la part interior de la boina que est\u00e0 en contacte amb el cap o la pell, destinada a absorbir la suor i millorar el confort.<\/p>\n\n\n\n<p class=\"text-justify\">Tamb\u00e9 s\u2019anomena cinta de suor.<\/p>\n\n\n\n<p class=\"text-justify\">Tradicionalment la badana es confeccionava amb cuir fi, especialment pell d\u2019ovella adobada, molt suau i absorbent.<\/p>\n\n\n\n<p class=\"text-justify\">Per extensi\u00f3, el terme tamb\u00e9 s\u2019utilitza avui per designar cintes t\u00e8xtils o sint\u00e8tiques que compleixen la mateixa funci\u00f3.<\/p>\n\n\n\n<p class=\"text-justify\">En moltes boines la badana pot estar feta de cot\u00f3, poli\u00e8ster o teixits t\u00e8cnics, encara que el nom tradicional es mant\u00e9.<\/p>\n\n\n\n<p class=\"text-justify\">A la badana generalment hi trobem el <strong>lla\u00e7 de la badana<\/strong>.<\/p>\n\n\n\n<p class=\"text-justify\">\u00c9s un petit lla\u00e7 o traveta de cinta, generalment t\u00e8xtil, situat a l\u2019interior de les boines i fixat sobre la badana o cinta de suor a la part posterior de la pe\u00e7a.<\/p>\n\n\n\n<p class=\"text-justify\">La seva funci\u00f3 principal \u00e9s indicar la posici\u00f3 posterior del barret, facilitant la seva correcta col\u00b7locaci\u00f3 al cap.<\/p>\n\n\n\n<p class=\"text-justify\">Tradicionalment es confecciona amb una cinta estreta doblegada en forma de lla\u00e7 i cosida a la banda interior. A m\u00e9s de la seva funci\u00f3 pr\u00e0ctica, aquest element constitueix un detall tradicional de la capelleria.<\/p>\n\n\n\n<p class=\"text-justify\">A m\u00e9s de la seva funci\u00f3 pr\u00e0ctica, aquest element constitueix un detall tradicional de la capelleria.<\/p>\n\n\n\n<h3 class=\"wp-block-heading text-justify has-medium-font-size\">Folre de la boina<\/h3>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"700\" height=\"394\" src=\"https:\/\/tevipa.com\/blog\/wp-content\/uploads\/2026\/03\/nome003.png\" alt=\"Interna tega\u0135o de bereto kovranta la supran platon kaj ka\u015danta la kudrojn.\" class=\"wp-image-6385\" srcset=\"https:\/\/tevipa.com\/blog\/wp-content\/uploads\/2026\/03\/nome003.png 700w, https:\/\/tevipa.com\/blog\/wp-content\/uploads\/2026\/03\/nome003-300x169.png 300w\" sizes=\"auto, (max-width: 700px) 100vw, 700px\" \/><\/figure>\n<\/div>\n\n\n<p class=\"text-justify\">El folre de la boina \u00e9s la capa interior de teixit que recobreix parcialment o totalment l\u2019interior de la pe\u00e7a amb la finalitat d\u2019ocultar les costures, protegir el teixit exterior i millorar el confort en contacte amb el cap.<\/p>\n\n\n\n<p class=\"text-justify\">Es fixa a la pe\u00e7a mitjan\u00e7ant la cinta de suor o badana, que subjecta el marge del folre al contorn interior de la boina.<\/p>\n\n\n\n<p class=\"text-justify\">A m\u00e9s de la seva funci\u00f3 protectora, el folre contribueix a donar estabilitat a la pe\u00e7a i millorar-ne l\u2019acabat interior.<\/p>\n\n\n\n<p class=\"text-justify\">Es pot folrar nom\u00e9s el plat de la boina o b\u00e9 el plat i l\u2019ala.<\/p>\n\n\n\n<h2 class=\"wp-block-heading text-justify has-medium-font-size\">Tipologia geom\u00e8trica de la boina<\/h2>\n\n\n\n<p class=\"text-justify\">La boina pot classificar-se atenent a la seva estructura geom\u00e8trica i constructiva.<br>Des d\u2019un punt de vista t\u00e8cnic existeixen quatre criteris fonamentals de classificaci\u00f3.<\/p>\n\n\n\n<h3 class=\"wp-block-heading text-justify has-medium-font-size\">Segons la forma del plat i del buit interior<\/h3>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"700\" height=\"394\" src=\"https:\/\/tevipa.com\/blog\/wp-content\/uploads\/2026\/03\/nome006_-elipticas-redondas.png\" alt=\"Comparaci\u00f3 entre boina circular i boina el\u00b7l\u00edptica mostrant el plat superior i el buit interior.\" class=\"wp-image-6392\" srcset=\"https:\/\/tevipa.com\/blog\/wp-content\/uploads\/2026\/03\/nome006_-elipticas-redondas.png 700w, https:\/\/tevipa.com\/blog\/wp-content\/uploads\/2026\/03\/nome006_-elipticas-redondas-300x169.png 300w\" sizes=\"auto, (max-width: 700px) 100vw, 700px\" \/><\/figure>\n<\/div>\n\n\n<p class=\"text-justify\">El plat pot ser:<\/p>\n\n\n\n<h4 class=\"wp-block-heading text-justify has-medium-font-size\"><strong><strong>Plat circular<\/strong><\/strong><\/h4>\n\n\n\n<p class=\"text-justify\">El plat \u00e9s una circumfer\u00e8ncia.<br>\u00c9s la soluci\u00f3 m\u00e9s simple i tradicional.<\/p>\n\n\n\n<h4 class=\"wp-block-heading text-justify has-medium-font-size\"><strong><strong>Plat el\u00b7l\u00edptic<\/strong><\/strong><\/h4>\n\n\n\n<p class=\"text-justify\">El plat adopta forma d\u2019el\u00b7lipse, ajustant-se millor a la morfologia cranial quan es considera l\u2019\u00edndex d\u2019ovalitat.<\/p>\n\n\n\n<p class=\"text-justify\">Permet una pe\u00e7a m\u00e9s antropom\u00e8trica.<\/p>\n\n\n\n<p class=\"text-justify\">El buit interior determina l\u2019ajust sobre el cap i constitueix l\u2019element estructural principal de la pe\u00e7a.<\/p>\n\n\n\n<h4 class=\"wp-block-heading text-justify has-medium-font-size\"><strong><strong>Buit circular<\/strong><\/strong><\/h4>\n\n\n\n<p class=\"text-justify\">El contorn interior \u00e9s una circumfer\u00e8ncia.<\/p>\n\n\n\n<h4 class=\"wp-block-heading text-justify has-medium-font-size\"><strong><strong>Buit el\u00b7l\u00edptic<\/strong><\/strong><\/h4>\n\n\n\n<p class=\"text-justify\">El contorn interior adopta forma d\u2019el\u00b7lipse.<br>Permet un ajust m\u00e9s antropom\u00e8tric.<\/p>\n\n\n\n<h3 class=\"wp-block-heading text-justify has-medium-font-size\">Segons la posici\u00f3 del buit respecte al plat<\/h3>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"700\" height=\"394\" src=\"https:\/\/tevipa.com\/blog\/wp-content\/uploads\/2026\/03\/concentricaExcentrica.png\" alt=\"Comparaci\u00f3 entre boina conc\u00e8ntrica i boina exc\u00e8ntrica segons la posici\u00f3 del buit interior respecte al centre del plat.\" class=\"wp-image-6401\" srcset=\"https:\/\/tevipa.com\/blog\/wp-content\/uploads\/2026\/03\/concentricaExcentrica.png 700w, https:\/\/tevipa.com\/blog\/wp-content\/uploads\/2026\/03\/concentricaExcentrica-300x169.png 300w\" sizes=\"auto, (max-width: 700px) 100vw, 700px\" \/><\/figure>\n<\/div>\n\n\n<h4 class=\"wp-block-heading text-justify has-medium-font-size\"><strong><strong><strong>Boina conc\u00e8ntrica<\/strong><\/strong><\/strong><\/h4>\n\n\n\n<p class=\"text-justify\">El centre del forat coincideix amb el centre del plat.<\/p>\n\n\n\n<h4 class=\"wp-block-heading text-justify has-medium-font-size\"><strong><strong>Boina exc\u00e8ntrica<\/strong><\/strong><\/h4>\n\n\n\n<p class=\"text-justify\">El centre del forat es despla\u00e7a respecte al centre del plat.<br>Aquest despla\u00e7ament pot produir-se en sentit vertical, horitzontal o combinat.<\/p>\n\n\n\n<h3 class=\"wp-block-heading text-justify has-medium-font-size\">Segons l\u2019amplada de l\u2019ala o vol<\/h3>\n\n\n\n<p class=\"text-justify\">El vol \u00e9s la dist\u00e0ncia radial entre el buit interior i el per\u00edmetre exterior del plat.<\/p>\n\n\n\n<p class=\"text-justify\">Pot classificar-se en:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li class=\"text-justify\">vol estret<\/li>\n\n\n\n<li class=\"text-justify\">vol cl\u00e0ssic<\/li>\n\n\n\n<li class=\"text-justify\">vol mitj\u00e0<\/li>\n\n\n\n<li class=\"text-justify\">vol ample<\/li>\n<\/ul>\n\n\n\n<p class=\"text-justify\">El vol no determina l\u2019ajust de la pe\u00e7a, sin\u00f3 la seva expressi\u00f3 volum\u00e8trica.<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"700\" height=\"394\" src=\"https:\/\/tevipa.com\/blog\/wp-content\/uploads\/2026\/03\/db02.png\" alt=\"Comparaci\u00f3 entre boines amb vol estret, cl\u00e0ssic, mitj\u00e0 i ampli mostrant diferents proporcions entre el plat i el buit interior.\" class=\"wp-image-6407\" srcset=\"https:\/\/tevipa.com\/blog\/wp-content\/uploads\/2026\/03\/db02.png 700w, https:\/\/tevipa.com\/blog\/wp-content\/uploads\/2026\/03\/db02-300x169.png 300w\" sizes=\"auto, (max-width: 700px) 100vw, 700px\" \/><\/figure>\n<\/div>\n\n\n<h3 class=\"wp-block-heading text-justify has-medium-font-size\">Segons el sistema d\u2019ajust interior<\/h3>\n\n\n\n<p class=\"text-justify\">El sistema d\u2019ajust pot realitzar-se de diferents maneres.<\/p>\n\n\n\n<p class=\"text-justify\"><strong>Sense cinta interior:<\/strong> El buit es remata directament.<\/p>\n\n\n\n<p class=\"text-justify\"><strong>Amb cinta interior oculta:<\/strong> La cinta queda integrada a l\u2019interior i no \u00e9s visible des de l\u2019exterior.<\/p>\n\n\n\n<p class=\"text-justify\"><strong>Amb cinta interior vista:<\/strong> La cinta forma part del disseny i pot actuar com a element decoratiu o estructural.<\/p>\n\n\n\n<h3 class=\"wp-block-heading text-justify has-medium-font-size\">Conclusi\u00f3 estructural<\/h3>\n\n\n\n<p class=\"text-justify\">La combinaci\u00f3 d\u2019aquests quatre criteris permet generar un sistema param\u00e8tric complet de boines adaptable a diferents morfologies cranials, estils i edats.<\/p>\n\n\n\n<h3 class=\"wp-block-heading text-justify\">Centre geom\u00e8tric del plat (cp)<\/h3>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-large is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"576\" src=\"https:\/\/tevipa.com\/blog\/wp-content\/uploads\/2026\/03\/centro-1024x576.png\" alt=\"Centre geom\u00e8tric del plat de la boina representat en l\u2019esquema del sistema geom\u00e8tric de construcci\u00f3.\" class=\"wp-image-6416\" style=\"width:700px\" srcset=\"https:\/\/tevipa.com\/blog\/wp-content\/uploads\/2026\/03\/centro-1024x576.png 1024w, https:\/\/tevipa.com\/blog\/wp-content\/uploads\/2026\/03\/centro-300x169.png 300w, https:\/\/tevipa.com\/blog\/wp-content\/uploads\/2026\/03\/centro-768x432.png 768w, https:\/\/tevipa.com\/blog\/wp-content\/uploads\/2026\/03\/centro.png 1300w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n<\/div>\n\n\n<p class=\"text-justify\">En el model cl\u00e0ssic el centre del plat (cp) coincideix amb el centre del forat interior.<\/p>\n\n\n\n<p class=\"text-justify\">En una variant descentrada el centre del plat (<strong>cp<\/strong>) es despla\u00e7a una dist\u00e0ncia (<strong>d<\/strong>).<\/p>\n\n\n\n<h3 class=\"wp-block-heading text-justify has-medium-font-size\">Centre del forat (ch)<\/h3>\n\n\n\n<p class=\"text-justify\">Centre geom\u00e8tric del per\u00edmetre interior.<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"700\" height=\"394\" src=\"https:\/\/tevipa.com\/blog\/wp-content\/uploads\/2026\/03\/nome011.png\" alt=\"Centre geom\u00e8tric del buit interior de la boina representat en l\u2019esquema del sistema geom\u00e8tric.\" class=\"wp-image-6423\" srcset=\"https:\/\/tevipa.com\/blog\/wp-content\/uploads\/2026\/03\/nome011.png 700w, https:\/\/tevipa.com\/blog\/wp-content\/uploads\/2026\/03\/nome011-300x169.png 300w\" sizes=\"auto, (max-width: 700px) 100vw, 700px\" \/><\/figure>\n<\/div>\n\n\n<h3 class=\"wp-block-heading text-justify has-medium-font-size\">Despla\u00e7ament (d)<\/h3>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"700\" height=\"394\" src=\"https:\/\/tevipa.com\/blog\/wp-content\/uploads\/2026\/03\/nome012.png\" alt=\"Despla\u00e7ament del centre de la boina que mostra la dist\u00e0ncia entre el centre del plat (cp) i el centre del buit interior (ch).\" class=\"wp-image-6431\" srcset=\"https:\/\/tevipa.com\/blog\/wp-content\/uploads\/2026\/03\/nome012.png 700w, https:\/\/tevipa.com\/blog\/wp-content\/uploads\/2026\/03\/nome012-300x169.png 300w\" sizes=\"auto, (max-width: 700px) 100vw, 700px\" \/><\/figure>\n<\/div>\n\n\n<p class=\"text-justify\">El despla\u00e7ament o excentricitat \u00e9s la dist\u00e0ncia entre el centre del plat (<strong>cp<\/strong>) i el centre del forat (<strong>ch<\/strong>).<\/p>\n\n\n\n<p class=\"text-justify\">Quan la boina no \u00e9s conc\u00e8ntrica (d \u2260 0), la boina presenta un vol irregular.<\/p>\n\n\n\n<h3 class=\"wp-block-heading text-justify has-medium-font-size\">Variant estructural<\/h3>\n\n\n\n<p class=\"text-justify\">Segons la combinaci\u00f3 geom\u00e8trica:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li class=\"text-justify\">circular conc\u00e8ntrica<\/li>\n\n\n\n<li class=\"text-justify\">circular descentrada<\/li>\n\n\n\n<li class=\"text-justify\">el\u00b7l\u00edptica centrada<\/li>\n\n\n\n<li class=\"text-justify\">el\u00b7l\u00edptica descentrada<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading text-justify has-medium-font-size\">Taula i variables<\/h2>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-large is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"576\" src=\"https:\/\/tevipa.com\/blog\/wp-content\/uploads\/2026\/03\/tabla-1024x576.png\" alt=\"Taula de variables i f\u00f3rmules utilitzades per al c\u00e0lcul geom\u00e8tric del patr\u00f3 de la boina a partir del contorn del cap.\" class=\"wp-image-6439\" style=\"width:700px\" srcset=\"https:\/\/tevipa.com\/blog\/wp-content\/uploads\/2026\/03\/tabla-1024x576.png 1024w, https:\/\/tevipa.com\/blog\/wp-content\/uploads\/2026\/03\/tabla-300x169.png 300w, https:\/\/tevipa.com\/blog\/wp-content\/uploads\/2026\/03\/tabla-768x432.png 768w, https:\/\/tevipa.com\/blog\/wp-content\/uploads\/2026\/03\/tabla-1536x864.png 1536w, https:\/\/tevipa.com\/blog\/wp-content\/uploads\/2026\/03\/tabla-2048x1152.png 2048w, https:\/\/tevipa.com\/blog\/wp-content\/uploads\/2026\/03\/tabla-1320x743.png 1320w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n<\/div>\n\n\n<p class=\"text-justify\">k: contorn de cap<br><strong>ioc<\/strong>: \u00edndex d\u2019ovalitat cranial<br><strong>deq<\/strong>: di\u00e0metre equivalent<br><strong>ml<\/strong>: multiplicador cranial anteroposterior<br><strong>mw<\/strong>: multiplicador cranial bilateral<br><strong>l<\/strong>: di\u00e0metre cranial anteroposterior<br><strong>w<\/strong>: di\u00e0metre cranial bilateral<br><strong>rt<\/strong>: radi te\u00f2ric de cap<br><strong>ree<\/strong>: radi exterior per boina estreta<br><strong>rec<\/strong>: radi exterior per boina cl\u00e0ssica<br><strong>rem<\/strong>: radi exterior per boina mitjana<br><strong>rea<\/strong>: radi exterior per boina ampla<br><strong>aae<\/strong>: amplada d\u2019ala boina estreta<br><strong>aac<\/strong>: amplada d\u2019ala boina cl\u00e0ssica<br><strong>aam<\/strong>: amplada d\u2019ala boina mitjana<br><strong>aaa<\/strong>: amplada d\u2019ala boina ampla<\/p>\n\n\n\n<p class=\"text-justify\">En aquest ep\u00edgraf definim amb precisi\u00f3 totes les variables que s\u2019utilitzen per al c\u00e0lcul i la construcci\u00f3 de la boina.<\/p>\n\n\n\n<p class=\"text-justify\">Cada s\u00edmbol, cada f\u00f3rmula i cada denominaci\u00f3 responen a una funci\u00f3 concreta i reprodu\u00efble.<\/p>\n\n\n\n<p class=\"text-justify\">L\u2019objectiu \u00e9s que, un cop compresos els termes i les seves relacions, el sistema es pugui utilitzar de manera aut\u00f2noma per a qualsevol mida de cap, des de nad\u00f3 fins a adult XL, i adaptar-lo a variants de construcci\u00f3 circulars o el\u00b7l\u00edptiques.<\/p>\n\n\n\n<p class=\"text-justify\">A continuaci\u00f3 es llisten les variables utilitzades en el sistema, amb la seva descripci\u00f3, tipus i f\u00f3rmula quan escau:<\/p>\n\n\n\n<h3 class=\"wp-block-heading text-justify has-medium-font-size\">Contorn de cap (k)<\/h3>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-large is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"576\" src=\"https:\/\/tevipa.com\/blog\/wp-content\/uploads\/2026\/02\/bcp-9_01-1024x576.jpg\" alt=\"Mesura dels di\u00e0metres cranials anteroposterior (a) i bilateral (b) per al patronatge proporcional d\u2019una gorra de beisbol\" class=\"wp-image-6160\" style=\"width:700px\" srcset=\"https:\/\/tevipa.com\/blog\/wp-content\/uploads\/2026\/02\/bcp-9_01-1024x576.jpg 1024w, https:\/\/tevipa.com\/blog\/wp-content\/uploads\/2026\/02\/bcp-9_01-300x169.jpg 300w, https:\/\/tevipa.com\/blog\/wp-content\/uploads\/2026\/02\/bcp-9_01-768x432.jpg 768w, https:\/\/tevipa.com\/blog\/wp-content\/uploads\/2026\/02\/bcp-9_01-1536x864.jpg 1536w, https:\/\/tevipa.com\/blog\/wp-content\/uploads\/2026\/02\/bcp-9_01-2048x1152.jpg 2048w, https:\/\/tevipa.com\/blog\/wp-content\/uploads\/2026\/02\/bcp-9_01-1320x743.jpg 1320w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n<\/div>\n\n\n<p class=\"text-justify\">\u00c9s la mesura del contorn real del cap amb cinta m\u00e8trica flexible, presa per la zona de suport de la boina (front i occipital).<\/p>\n\n\n\n<p class=\"text-justify\">Aquesta mesura \u00e9s la base de la pe\u00e7a.<\/p>\n\n\n\n<p class=\"text-justify\">Totes les altres mesures se\u2019n deriven.<\/p>\n\n\n\n<h3 class=\"wp-block-heading text-justify has-medium-font-size\">\u00cdndex d\u2019ovalitat cranial (ioc)<\/h3>\n\n\n\n<p class=\"text-justify\">L\u2019\u00edndex d\u2019ovalitat cranial expressa fins a quin punt la forma del cap s\u2019allunya d\u2019una circumfer\u00e8ncia perfecta quan es representa com una el\u00b7lipse.<\/p>\n\n\n\n<p class=\"text-justify\">Es defineix com:<\/p>\n\n\n\n<p class=\"text-justify\"><strong>ioc = di\u00e0metre anteroposterior \/ di\u00e0metre bilateral<\/strong><\/p>\n\n\n\n<p class=\"text-justify\">El di\u00e0metre anteroposterior correspon a la dist\u00e0ncia entre el front i la part posterior m\u00e9s prominent del cap.<\/p>\n\n\n\n<p class=\"text-justify\">El di\u00e0metre bilateral correspon a la dist\u00e0ncia entre ambd\u00f3s costats del crani, presa d\u2019orella a orella.<\/p>\n\n\n\n<p class=\"text-justify\">Aquest \u00edndex s\u2019utilitza per transformar les dimensions d\u2019un cercle en una el\u00b7lipse quan s\u2019utilitza una variant el\u00b7l\u00edptica.<\/p>\n\n\n\n<h3 class=\"wp-block-heading text-justify has-medium-font-size\"><strong>Di\u00e0metre equivalent<\/strong> (deq)<\/h3>\n\n\n\n<p class=\"text-justify\">Di\u00e0metre del cercle equivalent al contorn de cap mesurat.<\/p>\n\n\n\n<div class=\"wp-block-math\"><math display=\"block\"><semantics><mrow><mi>d<\/mi><mi>e<\/mi><mi>q<\/mi><mo>=<\/mo><mfrac><mi>k<\/mi><mi>\u03c0<\/mi><\/mfrac><\/mrow><annotation encoding=\"application\/x-tex\">deq = \\frac{k}{\\pi}<\/annotation><\/semantics><\/math><\/div>\n\n\n\n<p class=\"text-justify\">Serveix com a mesura base per derivar altres proporcions.<\/p>\n\n\n\n<h3 class=\"wp-block-heading text-justify has-medium-font-size\">Multiplicador de di\u00e0metre cranial anteroposterior (ml)<\/h3>\n\n\n\n<p class=\"text-justify\">Coeficient per estimar l\u2019eix anteroposterior del crani a partir del di\u00e0metre equivalent.<br>Calculat a partir de bases de dades antropom\u00e8triques externes.<\/p>\n\n\n\n<h3 class=\"wp-block-heading text-justify has-medium-font-size\">Multiplicador de di\u00e0metre cranial bilateral (mw)<\/h3>\n\n\n\n<p class=\"text-justify\">Coeficient per estimar l\u2019eix lateral (bilateral) del crani a partir del di\u00e0metre equivalent.<br>Calculat a partir de bases de dades antropom\u00e8triques externes.<\/p>\n\n\n\n<h3 class=\"wp-block-heading text-justify has-medium-font-size\">Di\u00e0metre cranial anteroposterior (l)<\/h3>\n\n\n\n<p class=\"text-justify\">Estimaci\u00f3 del di\u00e0metre del cap en l\u2019eix anteroposterior, utilitzada quan es calcula el buit interior el\u00b7l\u00edptic.<\/p>\n\n\n\n<div class=\"wp-block-math\"><math display=\"block\"><semantics><mrow><mi>l<\/mi><mo>=<\/mo><mi>d<\/mi><mi>e<\/mi><mi>q<\/mi><mo>\u00d7<\/mo><mi>m<\/mi><mi>l<\/mi><\/mrow><annotation encoding=\"application\/x-tex\">l = deq \\times ml<\/annotation><\/semantics><\/math><\/div>\n\n\n\n<h3 class=\"wp-block-heading text-justify has-medium-font-size\">Di\u00e0metre cranial bilateral (w)<\/h3>\n\n\n\n<p class=\"text-justify\">Estimaci\u00f3 del di\u00e0metre del cap en l\u2019eix lateral (bilateral), utilitzada per al buit el\u00b7l\u00edptic.<\/p>\n\n\n\n<div class=\"wp-block-math\"><math display=\"block\"><semantics><mrow><mi>w<\/mi><mo>=<\/mo><mi>d<\/mi><mi>e<\/mi><mi>q<\/mi><mo>\u00d7<\/mo><mi>m<\/mi><mi>w<\/mi><\/mrow><annotation encoding=\"application\/x-tex\">w = deq \\times mw<\/annotation><\/semantics><\/math><\/div>\n\n\n\n<h3 class=\"wp-block-heading text-justify has-medium-font-size\">Radi te\u00f2ric de cap (rt)<\/h3>\n\n\n\n<p class=\"text-justify\">Radi del cercle equivalent al contorn de cap. \u00c9s la base per calcular els radis interiors i exteriors.<br>\u00c9s la meitat del di\u00e0metre equivalent (<strong>deq<\/strong>).<\/p>\n\n\n\n<div class=\"wp-block-math\"><math display=\"block\"><semantics><mrow><msub><mi>r<\/mi><mi>t<\/mi><\/msub><mo>=<\/mo><mfrac><mrow><mi>d<\/mi><mi>e<\/mi><mi>q<\/mi><\/mrow><mn>2<\/mn><\/mfrac><mo>=<\/mo><mfrac><mi>k<\/mi><mrow><mn>2<\/mn><mo>\u22c5<\/mo><mi>\u03c0<\/mi><\/mrow><\/mfrac><\/mrow><annotation encoding=\"application\/x-tex\">r_t = \\frac{deq}{2} = \\frac{k}{2 \\cdot \\pi}<\/annotation><\/semantics><\/math><\/div>\n\n\n\n<h3 class=\"wp-block-heading text-justify has-medium-font-size\">\u00cdndex del radi exterior de la boina (ire)<\/h3>\n\n\n\n<p class=\"text-justify\">Definim quatre valors segons l\u2019amplitud desitjada del vol de la boina. En tots els casos es multiplica el radi te\u00f2ric de cap pel multiplicador suggerit.<\/p>\n\n\n\n<p class=\"text-justify\">Aquestes dades s\u00f3n orientatives i funcionen m\u00e9s aviat com una guia per donar la forma adequada a la boina.<\/p>\n\n\n\n<p class=\"text-justify\">Aquests multiplicadors estan calibrats a partir de proporcions observades en boines industrials i adaptats a un sistema param\u00e8tric clar i escalable.<\/p>\n\n\n\n<p class=\"text-justify\">Per trobar el radi exterior (<strong>re<\/strong>) d\u2019una determinada boina multiplicarem el valor de l\u2019\u00edndex del radi exterior (<strong>ire<\/strong>) pel radi te\u00f2ric de la boina.<\/p>\n\n\n\n<div class=\"wp-block-math\"><math display=\"block\"><semantics><mrow><msub><mi>r<\/mi><mi>e<\/mi><\/msub><mo>=<\/mo><msub><mi>r<\/mi><mi>t<\/mi><\/msub><mo>\u22c5<\/mo><msub><mi>i<\/mi><mrow><mi>r<\/mi><mi>e<\/mi><\/mrow><\/msub><\/mrow><annotation encoding=\"application\/x-tex\">r_e = r_t \\cdot i_{re}<\/annotation><\/semantics><\/math><\/div>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-large is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"576\" src=\"https:\/\/tevipa.com\/blog\/wp-content\/uploads\/2026\/03\/nome010-1024x576.png\" alt=\"\u00cdndex del radi exterior de la boina utilitzat per calcular el radi del plat a partir del radi te\u00f2ric del cap.\" class=\"wp-image-6446\" style=\"width:700px\" srcset=\"https:\/\/tevipa.com\/blog\/wp-content\/uploads\/2026\/03\/nome010-1024x576.png 1024w, https:\/\/tevipa.com\/blog\/wp-content\/uploads\/2026\/03\/nome010-300x169.png 300w, https:\/\/tevipa.com\/blog\/wp-content\/uploads\/2026\/03\/nome010-768x432.png 768w, https:\/\/tevipa.com\/blog\/wp-content\/uploads\/2026\/03\/nome010-1536x864.png 1536w, https:\/\/tevipa.com\/blog\/wp-content\/uploads\/2026\/03\/nome010-2048x1152.png 2048w, https:\/\/tevipa.com\/blog\/wp-content\/uploads\/2026\/03\/nome010-1320x743.png 1320w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n<\/div>\n\n\n<p class=\"text-justify\"><strong>Establim com a \u00edndexs els seg\u00fcents<\/strong>:<\/p>\n\n\n\n<p class=\"has-text-align-center\">\u00cdndex de radi exterior per a boina calada: 1.35<\/p>\n\n\n\n<p class=\"has-text-align-center\">\u00cdndex de radi exterior per a boina cl\u00e0ssica: 1.50<\/p>\n\n\n\n<p class=\"has-text-align-center\">\u00cdndex de radi exterior per a boina mitjana: 1.64<\/p>\n\n\n\n<p class=\"has-text-align-center\">\u00cdndex de radi exterior per a boina ampla: 1.80<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-large is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"576\" src=\"https:\/\/tevipa.com\/blog\/wp-content\/uploads\/2026\/03\/nome009-1024x576.png\" alt=\"Comparaci\u00f3 dels quatre \u00edndexs del radi exterior de la boina que determinen el vol: estret, cl\u00e0ssic, mitj\u00e0 i ampli.\" class=\"wp-image-6453\" style=\"width:700px\" srcset=\"https:\/\/tevipa.com\/blog\/wp-content\/uploads\/2026\/03\/nome009-1024x576.png 1024w, https:\/\/tevipa.com\/blog\/wp-content\/uploads\/2026\/03\/nome009-300x169.png 300w, https:\/\/tevipa.com\/blog\/wp-content\/uploads\/2026\/03\/nome009-768x432.png 768w, https:\/\/tevipa.com\/blog\/wp-content\/uploads\/2026\/03\/nome009-1536x864.png 1536w, https:\/\/tevipa.com\/blog\/wp-content\/uploads\/2026\/03\/nome009-2048x1152.png 2048w, https:\/\/tevipa.com\/blog\/wp-content\/uploads\/2026\/03\/nome009-1320x743.png 1320w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n<\/div>\n\n\n<h2 class=\"wp-block-heading text-justify has-medium-font-size\"><strong>El \u201crag\u201d de la boina<\/strong><\/h2>\n\n\n\n<figure class=\"wp-block-embed aligncenter is-type-video is-provider-youtube wp-block-embed-youtube wp-embed-aspect-9-16 wp-has-aspect-ratio\"><div class=\"wp-block-embed__wrapper\">\n<iframe loading=\"lazy\" title=\"El secreto geom\u00e9trico de la boina\" width=\"563\" height=\"1000\" src=\"https:\/\/www.youtube.com\/embed\/bkXmt7dxR34?feature=oembed\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" referrerpolicy=\"strict-origin-when-cross-origin\" allowfullscreen><\/iframe>\n<\/div><\/figure>\n\n\n\n<h2 class=\"wp-block-heading text-justify has-medium-font-size\"><strong>Patr\u00f3 personalitzat<\/strong><\/h2>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"576\" src=\"https:\/\/tevipa.com\/blog\/wp-content\/uploads\/2025\/10\/enConstruccion2000-1024x576.png\" alt=\"Dibuix d\u2019un paleta col\u00b7locant maons davant d\u2019un jard\u00ed amb una font, s\u00edmbol d\u2019una obra en proc\u00e9s\" class=\"wp-image-2857\" srcset=\"https:\/\/tevipa.com\/blog\/wp-content\/uploads\/2025\/10\/enConstruccion2000-1024x576.png 1024w, https:\/\/tevipa.com\/blog\/wp-content\/uploads\/2025\/10\/enConstruccion2000-300x169.png 300w, https:\/\/tevipa.com\/blog\/wp-content\/uploads\/2025\/10\/enConstruccion2000.png 2000w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n<\/div>","protected":false},"excerpt":{"rendered":"<p>La boina \u00e9s una pe\u00e7a de cap tradicional la qual estructura pot descriure\u2019s mitjan\u00e7ant una geometria molt simple: la relaci\u00f3 entre un volum exterior i un buit interior que determina l\u2019ajust sobre el cap. A partir d\u2019aquesta idea es desenvolupa un sistema param\u00e8tric de construcci\u00f3 basat en el contorn del cap, l\u2019\u00edndex d\u2019ovalitat cranial i la relaci\u00f3 entre el plat, el vol i el buit interior. Aquest sistema permet generar patrons de boina adaptables a diferents talles, proporcions cranials i variants de disseny.<\/p>\n","protected":false},"author":1,"featured_media":6466,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_kad_post_transparent":"","_kad_post_title":"","_kad_post_layout":"","_kad_post_sidebar_id":"","_kad_post_content_style":"","_kad_post_vertical_padding":"","_kad_post_feature":"","_kad_post_feature_position":"","_kad_post_header":false,"_kad_post_footer":false,"_kad_post_classname":"","footnotes":""},"categories":[1016,1109,1353,1361,611],"tags":[2107,406,408,435,1373,1748,507,532,696,574,572,687],"class_list":["post-6487","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog-cat","category-blog-short-ca","category-complement","category-gorra-ca","category-patro","tag-boina-ca","tag-como-cubrir-un-cuerpo-ca","tag-comocubriruncuerpo-ca","tag-creacio-de-moda","tag-gorra-ca","tag-modelatge","tag-patro","tag-patrons-ca","tag-tecnica-de-patronatge","tag-tele-virtual-patronage-ca","tag-televirtualpatronage-ca","tag-tutorial-de-patronatge"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.3 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>La boina - Tele Virtual Patronage<\/title>\n<meta name=\"description\" content=\"Sistema geom\u00e8tric param\u00e8tric per construir una boina a partir del contorn del cap. 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