{"id":8736,"date":"2026-06-21T12:00:06","date_gmt":"2026-06-21T04:00:06","guid":{"rendered":"https:\/\/glassbottlesupplies.com\/?p=8736"},"modified":"2026-06-21T12:00:06","modified_gmt":"2026-06-21T04:00:06","slug":"preventing-product-entrapment-in-wide-mouth-glass-bottles","status":"publish","type":"post","link":"https:\/\/glassbottlesupplies.com\/fr\/preventing-product-entrapment-in-wide-mouth-glass-bottles\/","title":{"rendered":"Pr\u00e9vention du coincement des produits dans les bouteilles en verre \u00e0 large goulot"},"content":{"rendered":"<p class=\"wp-block-paragraph\">Micro-rh\u00e9ologie de la distribution des produits : \u00e9limination des contre-d\u00e9pouilles structurelles et des vides internes pi\u00e9g\u00e9s dans les pots \u00e0 large orifice<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Le rendement volum\u00e9trique et la stabilit\u00e9 de conservation des formules cosm\u00e9tiques \u00e0 haute densit\u00e9 conditionn\u00e9es dans des flacons en verre \u00e0 large goulot destin\u00e9s \u00e0 la vente en gros sont optimis\u00e9s gr\u00e2ce \u00e0 la conception d'un profil continu sans \u00e9paulement sur la paroi verticale interne de la cavit\u00e9, ce qui \u00e9limine les contre-d\u00e9pouilles internes du moulage susceptibles de g\u00e9n\u00e9rer des vides dus \u00e0 la pression n\u00e9gative et des poches d'air emprisonn\u00e9es lors des op\u00e9rations de remplissage \u00e0 grande vitesse par le bas vers le haut.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">La dynamique des fluides des cr\u00e8mes visqueuses \u00e0 l'int\u00e9rieur de chambres structurelles larges<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Lorsqu\u2019un compos\u00e9 dense \u2014 tel qu\u2019un masque d\u00e9toxifiant \u00e0 base d\u2019argile, un baume lipidique fouett\u00e9 et onctueux ou une p\u00e2te en micro-\u00e9mulsion de derni\u00e8re g\u00e9n\u00e9ration \u2014 est introduit dans un flacon \u00e0 large goulot, la g\u00e9om\u00e9trie de la paroi int\u00e9rieure en verre d\u00e9termine le succ\u00e8s tant du processus de conditionnement automatis\u00e9 que de l\u2019extraction finale par le consommateur. Dans les r\u00e9cipients \u00e0 large ouverture, des variations structurelles mineures, qui seraient n\u00e9gligeables dans des contenants pour liquides, deviennent des facteurs majeurs favorisant le pi\u00e9geage du produit, les contraintes de phase et les irr\u00e9gularit\u00e9s volum\u00e9triques.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Comprendre les contre-d\u00e9pouilles structurelles internes et la cavitation de l'air<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Un mode de d\u00e9faillance courant lors du traitement de cosm\u00e9tiques tr\u00e8s visqueux dans des r\u00e9cipients en verre standard \u00e0 large ouverture est la formation de poches d\u2019air emprisonn\u00e9es, ou de vides internes, au cours du cycle de remplissage automatis\u00e9. Les lignes de production \u00e0 grande vitesse utilisent g\u00e9n\u00e9ralement des buses de remplissage de type \u00ab bottom-up \u00bb qui plongent dans le r\u00e9cipient et se r\u00e9tractent lentement \u00e0 mesure que le produit est extrud\u00e9. Si les flacons en verre \u00e0 large goulot pr\u00e9sentent une contre-d\u00e9pouille structurelle interne \u2014 une faiblesse de conception o\u00f9 le diam\u00e8tre int\u00e9rieur du col est l\u00e9g\u00e8rement plus \u00e9troit que celui de la cavit\u00e9 interne du corps du flacon \u2014, la cr\u00e8me qui s'\u00e9coule ne peut pas s'adapter sans heurts \u00e0 l'espace plus large situ\u00e9 en dessous.<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"400\" height=\"374\" src=\"https:\/\/glassbottlesupplies.com\/wp-content\/uploads\/2026\/06\/pasted-image-20260617-034027-412.jpg\" alt=\"\" class=\"wp-image-8737\" srcset=\"https:\/\/glassbottlesupplies.com\/wp-content\/uploads\/2026\/06\/pasted-image-20260617-034027-412.jpg 400w, https:\/\/glassbottlesupplies.com\/wp-content\/uploads\/2026\/06\/pasted-image-20260617-034027-412-300x281.jpg 300w, https:\/\/glassbottlesupplies.com\/wp-content\/uploads\/2026\/06\/pasted-image-20260617-034027-412-13x12.jpg 13w\" sizes=\"auto, (max-width: 400px) 100vw, 400px\" \/><\/figure>\n<\/div>\n\n\n<p class=\"wp-block-paragraph\">Le fluide dense, caract\u00e9ris\u00e9 par une forte coh\u00e9sion interne et une viscosit\u00e9 \u00e9lev\u00e9e, subit un cisaillement au niveau de cette ar\u00eate en verre. Au lieu de remplir uniform\u00e9ment le p\u00e9rim\u00e8tre, la cr\u00e8me forme un pont au-dessus de l'interstice, emprisonnant une poche d'air atmosph\u00e9rique sous l'anneau interne :<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>Extrusion par buse ---&gt; \u00c9coulement le long de la cr\u00eate du col ---&gt; Formation de ponts de fluide ---&gt; Poche d'air emprisonn\u00e9e\n<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">Cette poche d'air emprisonn\u00e9e compromet le conditionnement de plusieurs fa\u00e7ons. Tout d'abord, elle entra\u00eene une impr\u00e9cision volum\u00e9trique imm\u00e9diate, donnant l'impression que le conditionnement est plein alors qu'il est en sous-poids. Ensuite, cette poche d\u2019oxyg\u00e8ne emprisonn\u00e9e r\u00e9agit en permanence avec les principes actifs environnants, acc\u00e9l\u00e9rant l\u2019oxydation des fractions botaniques, des vitamines et des lipides fragiles, ce qui se traduit par une d\u00e9coloration localis\u00e9e et une d\u00e9gradation rapide de l\u2019\u00e9mulsion.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Tra\u00een\u00e9e aux limites internes et d\u00e9faillances du syst\u00e8me d'\u00e9vacuation des produits<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Une fois que le produit parvient au consommateur, la microtopographie de la surface interne du verre d\u00e9termine l'efficacit\u00e9 d'extraction. Le verre poss\u00e8de une couche superficielle naturellement polaire et \u00e0 haute \u00e9nergie, domin\u00e9e par des groupes silanols hydrophiles ($\\text{Si-OH}$). Les matrices cosm\u00e9tiques \u00e0 haute densit\u00e9 contiennent des r\u00e9seaux structuraux polaires qui ont tendance \u00e0 former de fortes liaisons hydrog\u00e8ne avec ces sites de surface.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Si les parois internes ne sont pas parfaitement uniformes et lisses, cette adh\u00e9rence interfaciale cr\u00e9e une couche de tra\u00een\u00e9e limite importante. Lorsqu\u2019on tente, \u00e0 l\u2019aide d\u2019une spatule ou des doigts, de racler la formulation du r\u00e9cipient, un film \u00e9pais de produit reste coll\u00e9 \u00e0 la paroi en verre. Dans les pots \u00e0 angles vifs ou de forme inadapt\u00e9e, cette r\u00e9tention r\u00e9siduelle peut repr\u00e9senter un pourcentage important du volume total de remplissage, ce qui constitue un gaspillage consid\u00e9rable de formulation haut de gamme.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Chimie des mat\u00e9riaux : r\u00e9duction de l'adh\u00e9rence de surface par modification thermique<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Pour relever le double d\u00e9fi que constituent le pi\u00e9geage des vides et la tra\u00een\u00e9e aux parois, il faut modifier la conception physique du moule et ajuster l'\u00e9nergie de surface de la matrice de verre. Seul un r\u00e9cipient dot\u00e9 d'un parcours interne parfaitement align\u00e9 et \u00e0 faible r\u00e9sistance peut garantir un remplissage uniforme et une \u00e9vacuation propre du produit.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u00c9limination du r\u00e9tr\u00e9cissement interne et du r\u00e9tr\u00e9cissement au niveau du col<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Les moules de production de pointe \u00e9liminent totalement la nervure de r\u00e9tr\u00e9cissement interne en \u00e9tablissant un rapport r\u00e9el de 1:1 entre le diam\u00e8tre int\u00e9rieur du rebord sup\u00e9rieur et celui de la paroi verticale du corps. Cette architecture interne sans \u00e9paulement garantit l'absence de toute obstruction g\u00e9om\u00e9trique susceptible d'entraver la descente d'une buse de remplissage ou l'\u00e9coulement vers le bas d'un compos\u00e9 visqueux.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Le fluide remplit le r\u00e9cipient de bas en haut sous la forme d'une masse homog\u00e8ne et compacte, refoulant enti\u00e8rement l'air ambiant et emp\u00eachant ainsi la formation de poches d'oxydation cach\u00e9es. Parall\u00e8lement, les parois verticales internes sont con\u00e7ues selon une configuration sans conicit\u00e9, garantissant ainsi que la section transversale reste parfaitement uniforme depuis le bord sup\u00e9rieur jusqu'au rayon de la base.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Le polissage au feu et l'\u00e9limination des micro-imperfections<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Afin de r\u00e9duire le coefficient de tra\u00een\u00e9e limite sans recourir \u00e0 des rev\u00eatements chimiques susceptibles de r\u00e9agir avec les principes actifs des soins de la peau, la surface du verre doit subir une modification thermique pr\u00e9cise. Imm\u00e9diatement apr\u00e8s l'\u00e9tape de formage, les cavit\u00e9s int\u00e9rieures des flacons en verre \u00e0 large goulot sont expos\u00e9es \u00e0 des flammes d'oxyg\u00e8ne \u00e0 haute temp\u00e9rature et contr\u00f4l\u00e9es.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Cette \u00e9tape de polissage au feu localis\u00e9 \u00e9limine les imperfections microscopiques de surface, la rugosit\u00e9 de surface et les microstructures du moule. Le proc\u00e9d\u00e9 transforme la surface interne en une surface ultra-lisse \u00e0 faible frottement. En minimisant ces microstructures, la surface physique disponible pour la liaison mol\u00e9culaire avec la cr\u00e8me est consid\u00e9rablement r\u00e9duite. La formulation glisse en douceur le long de la paroi en verre, facilitant ainsi l\u2019\u00e9vacuation quasi totale du produit et ne laissant aucun r\u00e9sidu.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Matrice de performances op\u00e9rationnelles : impact de la g\u00e9om\u00e9trie structurelle sur les \u00e9mulsions \u00e9paisses<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Le tableau ci-dessous compare les performances de diff\u00e9rentes architectures internes de verre lorsqu'elles sont soumises \u00e0 des vitesses de production \u00e9lev\u00e9es sur une ligne de remplissage automatis\u00e9e (90 unit\u00e9s par minute), avec une formulation d'argile purifiante \u00e0 haute viscosit\u00e9 (3 200 cP).<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><td><strong>Mesure de la performance<\/strong><\/td><td><strong>Bocal en verre souffl\u00e9 standard (col avec nervure interne)<\/strong><\/td><td><strong>Bouteilles \u00e0 large goulot, sans \u00e9paulement et de haute pr\u00e9cision<\/strong><\/td><td><strong>Pot press\u00e9 de qualit\u00e9 inf\u00e9rieure (alternatif)<\/strong><\/td><\/tr><\/thead><tbody><tr><td><strong>Configuration interne de l'\u00e9paule<\/strong><\/td><td>Ar\u00eate en contre-d\u00e9pouille (d\u00e9nivel\u00e9 de 1,8 mm)<\/td><td>Paroi parfaitement droite \u00e0 l'\u00e9chelle 1:1 (0,0 mm)<\/td><td>Bague \u00e0 d\u00e9coupe irr\u00e9guli\u00e8re<\/td><\/tr><tr><td><strong>Rugosit\u00e9 de surface interne (Ra)<\/strong><\/td><td>0,38 \u00b5m<\/td><td>&lt; 0,05 \u00b5m (poli au feu)<\/td><td>0,62 \u00b5m<\/td><\/tr><tr><td><strong>Taux de pi\u00e9geage dans les poches d'air<\/strong><\/td><td>4,21 TP3T de lots de production<\/td><td>&lt; 0,011 TP3T (risque n\u00e9gligeable)<\/td><td>8,71 TP3T de lots de production<\/td><\/tr><tr><td><strong>Pr\u00e9cision du sous-remplissage volum\u00e9trique<\/strong><\/td><td>Variance de $ \u00b1 $ 3,5 g<\/td><td>\u00c9cart de &lt; $ \u00b1 $ 0,2 g<\/td><td>Variance de $ \u00b1 $ 5,8 g<\/td><\/tr><tr><td><strong>D\u00e9chets li\u00e9s \u00e0 la r\u00e9tention r\u00e9siduelle de produit<\/strong><\/td><td>7.40%<\/td><td>&lt; 0,60% (\u00c9vacuation propre)<\/td><td>9.50%<\/td><\/tr><tr><td><strong>Indice de d\u00e9coloration localis\u00e9e<\/strong><\/td><td>Moyen (aux limites des poches d'air)<\/td><td>Totalement absent<\/td><td>\u00c9lev\u00e9 (zones d'oxydation rapide)<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">L'\u00e9valuation empirique d\u00e9montre que l'association d'un profil interne sans \u00e9paulement et d'un polissage au feu ultra-lisse \u00e9limine totalement les m\u00e9canismes physiques \u00e0 l'origine de la formation de vides et de la r\u00e9tention de produit. Cela garantit une homog\u00e9n\u00e9it\u00e9 et une stabilit\u00e9 parfaites, du conditionnement en usine jusqu'\u00e0 l'utilisation par le consommateur.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Disposition structurelle de pr\u00e9cision au niveau de l'interface d'angle de base<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">L'interface entre la paroi vitr\u00e9e verticale int\u00e9rieure et la base horizontale inf\u00e9rieure constitue un autre point critique pour la rh\u00e9ologie des fluides. Les techniques de fabrication standard donnent souvent lieu \u00e0 des jonctions internes anguleuses et saillantes, qui ont fortement tendance \u00e0 retenir les cr\u00e8mes \u00e9paisses.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Conception du rayon de la base sph\u00e9rique<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Afin de permettre au consommateur d'acc\u00e9der facilement \u00e0 chaque goutte du produit, les flacons \u00e0 large goulot de conception avanc\u00e9e int\u00e8grent un rayon sph\u00e9rique interne pr\u00e9cis au niveau des angles. Au lieu d'un angle vif de 90 degr\u00e9s, le bord inf\u00e9rieur int\u00e9rieur s'ins\u00e8re dans une courbe douce et fluide (g\u00e9n\u00e9ralement optimis\u00e9e entre 4,0 mm et 6,0 mm).<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>Paroi verticale ---&gt; Rayon de courbure sph\u00e9rique de 5 mm ---&gt; Base interne plate\n<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">Cette courbe douce \u00e9pouse la forme naturelle des spatules cosm\u00e9tiques et du bout des doigts de l'utilisateur. De plus, lors du cycle de remplissage automatis\u00e9 de bas en haut, cette base incurv\u00e9e permet au flux initial de fluide \u00e0 haute viscosit\u00e9 de se r\u00e9partir radialement vers l'ext\u00e9rieur sans cr\u00e9er de turbulences ni de microbulles d'air dans les coins inf\u00e9rieurs, \u00e9tablissant ainsi une base solide et irr\u00e9prochable pour le produit.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Syst\u00e8me avanc\u00e9 d'assurance qualit\u00e9 pour la pr\u00e9vention des vides<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Afin de garantir que les r\u00e9cipients en verre \u00e0 large goulot respectent les tol\u00e9rances internes pr\u00e9cises requises pour un remplissage \u00e0 grande vitesse sans faille, chaque lot de production est soumis \u00e0 une matrice de contr\u00f4le qualit\u00e9 automatis\u00e9e et exhaustive.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">1. Profilage t\u00e9l\u00e9centrique \u00e0 grande vitesse de cavit\u00e9s internes<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Chaque bouteille passe par un poste d'inspection opto\u00e9lectronique de pointe o\u00f9 des lentilles t\u00e9l\u00e9centriques sp\u00e9cialis\u00e9es scrutent directement vers le bas \u00e0 travers le large orifice. Le syst\u00e8me capture des profils transversaux haute r\u00e9solution de la cavit\u00e9 interne afin de v\u00e9rifier que la paroi interne est parfaitement droite et ne pr\u00e9sente absolument aucune contre-d\u00e9pouille ni aucune ar\u00eate de moulage.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">2. Mesures par profilom\u00e9trie de surface au laser<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Un profilom\u00e8tre laser sans contact balaye les parois int\u00e9rieures d'\u00e9chantillons choisis au hasard afin de v\u00e9rifier la finesse de surface obtenue lors de l'\u00e9tape de polissage au feu. Les r\u00e9cipients doivent pr\u00e9senter une rugosit\u00e9 de surface interne ($\\text{Ra}$) inf\u00e9rieure \u00e0 la limite stricte de 0,05 \u00b5m pour \u00eatre homologu\u00e9s pour des applications cosm\u00e9tiques \u00e0 haute viscosit\u00e9.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">3. V\u00e9rification de la densit\u00e9 volum\u00e9trique par radiographie<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Les r\u00e9cipients finis sont soumis \u00e0 un contr\u00f4le automatis\u00e9 par rayons X afin de v\u00e9rifier l'uniformit\u00e9 de la r\u00e9partition de la masse de verre au niveau des coins inf\u00e9rieurs et du talon. Cela permet de s'assurer qu'il n'y a pas de bulles de verre internes cach\u00e9es ni de points de fragilisation qui pourraient compromettre la r\u00e9sistance du r\u00e9cipient aux chocs thermiques lors du traitement par \u00e9mulsion \u00e0 coul\u00e9e \u00e0 chaud.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Foire aux questions techniques<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">Qu'est-ce qui provoque la formation de poches d'air \u00e0 l'int\u00e9rieur des r\u00e9cipients \u00e0 large goulot lors du remplissage automatis\u00e9 ?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Les poches d'air sont principalement dues \u00e0 un d\u00e9calage g\u00e9om\u00e9trique interne appel\u00e9 \u00ab contre-d\u00e9pouille \u00bb, qui se caract\u00e9rise par un diam\u00e8tre int\u00e9rieur du goulot de la bouteille plus \u00e9troit que celui de la cavit\u00e9 interne du corps situ\u00e9e en dessous. Lorsqu'une cr\u00e8me visqueuse est conditionn\u00e9e par le bas vers le haut, elle subit un cisaillement au niveau de cette ar\u00eate interne du goulot et forme un pont au-dessus de l'espace plus large au lieu de remplir le p\u00e9rim\u00e8tre de mani\u00e8re homog\u00e8ne, ce qui emprisonne une poche d'air sous l'anneau d'\u00e9paulement interne.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">En quoi le polissage \u00e0 la flamme permet-il de r\u00e9duire le gaspillage de produit \u00e0 l'int\u00e9rieur d'un pot de cosm\u00e9tique ?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Le polissage au feu fait fondre momentan\u00e9ment la couche superficielle interne du verre, ce qui permet d\u2019\u00e9liminer les imperfections microscopiques et les asp\u00e9rit\u00e9s laiss\u00e9es par les outils de moulage. Cela r\u00e9duit consid\u00e9rablement la surface physique sur laquelle une cr\u00e8me \u00e9paisse peut adh\u00e9rer, minimisant ainsi la r\u00e9sistance de frottement aux limites et permettant au consommateur de racler proprement les parois int\u00e9rieures \u00e0 l\u2019aide d\u2019une spatule ou d\u2019un doigt, ce qui ram\u00e8ne les r\u00e9sidus de produit \u00e0 moins de 0,61 TP3T.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Pourquoi un profil \u00e0 paroi droite v\u00e9ritable de rapport 1:1 est-il essentiel pour les baumes de soin \u00e0 haute viscosit\u00e9 ?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Un profil \u00e0 paroi droite v\u00e9ritable (1:1) garantit que le diam\u00e8tre interne reste parfaitement uniforme depuis le bord sup\u00e9rieur jusqu'\u00e0 la base. Cette architecture permet aux buses de remplissage de se d\u00e9placer sans entrave \u00e0 l'int\u00e9rieur du r\u00e9cipient et garantit que les formulations denses remplissent l'espace sous forme d'une masse homog\u00e8ne. Cela \u00e9limine totalement les zones mortes internes et les vides structurels o\u00f9 l'oxyg\u00e8ne pourrait rester pi\u00e9g\u00e9 et d\u00e9grader les principes actifs.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Le rayon de la base sph\u00e9rique interne peut-il am\u00e9liorer la r\u00e9sistance aux chocs thermiques d'un r\u00e9cipient en verre ?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Oui. Un angle interne aigu \u00e0 90 degr\u00e9s concentre les contraintes m\u00e9caniques et thermiques lors des processus de refroidissement et de lavage, ce qui rend le verre susceptible de se fissurer. Un rayon sph\u00e9rique lisse et arrondi r\u00e9partit ces forces physiques de mani\u00e8re homog\u00e8ne sur l'ensemble de la matrice de base, am\u00e9liorant ainsi consid\u00e9rablement la capacit\u00e9 du r\u00e9cipient \u00e0 supporter les changements rapides de temp\u00e9rature lors du remplissage \u00e0 chaud et de la st\u00e9rilisation \u00e0 haute temp\u00e9rature.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>","protected":false},"excerpt":{"rendered":"<p>The Micro-Rheology of Product Dispensing: Eliminating Structural Undercuts and Internal Void Entrapment in Wide Orifice Jars The volumetric yield and compounding stability of high-density cosmetic formulas housed in wide mouth glass bottles wholesale formats are maximized by engineering a continuous zero-shoulder profile on the internal vertical cavity wall, eliminating internal molding undercuts that generate negative 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