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Development of a high solids silicone PSA technology / Shaow B. Lin in ADHESIVES AGE, Vol. 39, N° 8 (07/1996)  

[article]  inADHESIVES AGE > Vol. 39, N° 8 (07/1996) . - p. 14-24 Titre : Development of a high solids silicone PSA technology Type de document : texte imprimé Auteurs : Shaow B. Lin, Auteur Année de publication : 1996 Article en page(s) : p. 14-24 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Adhésifs sensibles à la pression Formulation (Génie chimique) Haut extrait sec Rhéologie Silicones Les silicones, ou polysiloxanes, sont des composés inorganiques formés d'une chaine silicium-oxygène (...-Si-O-Si-O-Si-O-...) sur laquelle des groupes se fixent, sur les atomes de silicium. Certains groupes organiques peuvent être utilisés pour relier entre elles plusieurs de ces chaines (...-Si-O-...). Le type le plus courant est le poly(diméthylsiloxane) linéaire ou PDMS. Le second groupe en importance de matériaux en silicone est celui des résines de silicone, formées par des oligosiloxanes ramifiés ou en forme de cage (wiki). Index. décimale : 668.3 Adhésifs et produits semblables Résumé : A new high solids silicone pressure sensitive adhesive platform technology has been developed to meet multiple performance targets for industrial tape applications. This addition-cure, high solids silicone PSA system is providing converters with "dial-a-performance" formulation flexibility and expanding process latitude to meet specific needs. Note de contenu : - Traditional vs. new silicone psa technologies - Technological evolution of high solids - Advantages of high solids adhesives - Multi-component, high solids psa - Rheological characterization En ligne : https://drive.google.com/file/d/19posE1C3fofHNcCkKJnj1ynXkBsy5R6n/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=20506 [article]

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UV silicone release coatings : state of the art / Stuart R. Kerr III in ADHESIVES AGE, Vol. 39, N° 8 (07/1996)  

[article]  inADHESIVES AGE > Vol. 39, N° 8 (07/1996) . - p. 26-32 Titre : UV silicone release coatings : state of the art Type de document : texte imprimé Auteurs : Stuart R. Kerr III, Auteur Année de publication : 1996 Article en page(s) : p. 26-32 Langues : Américain (ame) Catégories : Adhésifs -- Séchage sous rayonnement ultraviolet Adhésifs sensibles à la pression Colles:Adhésifs Revêtements anti-adhésion Silicones Les silicones, ou polysiloxanes, sont des composés inorganiques formés d'une chaine silicium-oxygène (...-Si-O-Si-O-Si-O-...) sur laquelle des groupes se fixent, sur les atomes de silicium. Certains groupes organiques peuvent être utilisés pour relier entre elles plusieurs de ces chaines (...-Si-O-...). Le type le plus courant est le poly(diméthylsiloxane) linéaire ou PDMS. Le second groupe en importance de matériaux en silicone est celui des résines de silicone, formées par des oligosiloxanes ramifiés ou en forme de cage (wiki). Index. décimale : 668.3 Adhésifs et produits semblables Résumé : Silicones (polyorganosiloxanes) are highly flexible polymers based on an inorganic backbone of repeating silicon and oxygen atoms bonded together such that each silicon atom has attached to it two pendant organic groups based on hydrogen and carbon. For silicones used in release coatings chemistries these pendant hydrocarbons are usually methyl (-CH3) groups.Considering that the polysiloxane backbone is surrounded by an encompassing sheath of methyl hydrocarbons, and taking into account that hydrocarbons such as waxes and motor oils are characterized with lubricity and "non-stick" low surface energy, it is not surprising to find that silicones are similarly characterized. What distinguishes silicones from simple hydrocarbons are their better mechanical properties and higher temperature resistance. Release coatings based on chemically reacted silicones provide "easy release" surfaces for a variety of "sticky" applications. These silicone release coatings provide a non-adhering surface for paper and films upon which adhesives may be coated, handled and transported.Silicone release coated papers and films, when laminated to pressure sensitive adhesive (PSA) coated materials such as labels and tapes, provide both protection for the adhesive coated product (such as in preparation for slitting, die-cutting, etc.) and they provide subsequent easy release of the release coated paper or film from the adhesive surface immediately prior to its final use.For example, when "sticky" labels are manufactured, it is necessary to provide a removable paper or film backing that can be peeled away easily from the PSA coated label when it is ready for application. After it has served its purpose, this removable backing is either disposed of or recycled.In another example, certain types of adhesive tapes are coated on their backsides with a silicone release coating to allow the tape to unroll easily. If both sides of the paper or film on which the PSA is coated are "differentially" treated with a silicone release (one release coated side provides measurably easier release than the other), a "transfer tape" can be manufactured such that the free and unsupported PSA adhesive layer can be transferred easily to any other desired surface. For every released application, it is critically important that the adhesive side of these laminated constructions remains virtually unaffected by prolonged contact with the cured (chemically crosslinked) silicone coating. The silicone release coating must not contaminate the adhesive through migration of unreacted silicone oils, thereby degrading the adhesive performance or causing secondary contamination issues (e.g., for indirect food contact applications). The silicone release coating must also provide highly stable release over time; the adhesive and the silicone surfaces must not "lock up" whereby the paper or film liner is no longer easily removed. Note de contenu : - Silicone release coating technologies - UV curable silicone release coatings - Cationic UV cure silicones En ligne : https://drive.google.com/file/d/1pAFe4bm1fiw3vL2AP8SsO-4ZSqgf-2ZW/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=20536 [article]

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Salt plant enhances safety, cuts costs with low-temperature hot melt in ADHESIVES AGE, Vol. 39, N° 8 (07/1996)  

[article]  inADHESIVES AGE > Vol. 39, N° 8 (07/1996) . - p. 34-36 Titre : Salt plant enhances safety, cuts costs with low-temperature hot melt Type de document : texte imprimé Année de publication : 1996 Article en page(s) : p. 34-36 Langues : Américain (ame) Catégories : Adhésifs thermofusibles Coût -- Contrôle Emballages Etanchéité Sécurité du travail -- Appareils et matériel Index. décimale : 668.3 Adhésifs et produits semblables Résumé : Akzo Nobel Salt is a company committed to providing a safe work environment for employees. Safety audits, conducted by a team of employees, earmark situations that could be improved to meet safety goals.The safety audit team recently focused on the company's St. Clair, Mich., plant where 350°F hot melt adhesives used in the carton and case sealing operations could result in burn injuries. Akzo Nobel Salt turned to a new line of low-temperature hot melts from National Starch and Chemical Co., Bridgewater, N.J. Cool-Lok hot melts, formulated to run at 250°F, allowed the Akzo Nobel Salt packaging department to achieve safety goals and realize operating efficiencies. "It's been a double blessing for us," explains John Bearden, plant packaging supervisor. "Not only have the Cool-Lok products been successful in providing a safer workplace, which was our original intent, but we can apply less adhesive to each carton, which gives us cost savings." Note de contenu : - Sealing cost savings - Safety implication - Packaging operation - Plant processes - Quality system - Products and markets En ligne : https://drive.google.com/file/d/1a4NJBNhjnbtf9W0Y_NoVuMNAwHxtFCqu/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=20537 [article]

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