摘要:
Treatment of a porous substrate such as a textile material by treating the substrate with a foam, the substrate prior to treatment having a moisture content of up to 130% of the transit water content, forcing the foam into the porous substrate to enable foam transit through said substrate, causing or allowing foam collapse both at the surface interface and at the interior interface and terminating the treatment by removing or deactivating the reagent.
摘要:
This invention relates to a heat activatable adhesive formed from at least two components each in the form of discrete, flowable particles which are capable of adhering in abutment of one particle with another to provide an open structured, porous matrix. The adhesive may be in the form of a sheet formed by blending the particles of each component, applying the mechanical mixture to a supporting sheet heating the mixture and supporting sheet to the temperature at which the material with the lowest tackifying temperature becomes tacky applying pressure sufficient to partially flatten the largest particles to a degree such that their minimum dimension is substantially equivalent to the thickness of the layer formed on said support sheet and during or after said pressure application.
摘要:
L'invention concerne l'utilisation d'une application de mousse à un matériau en feuille perméable à l'air par une variété de moyens mécaniques ou à pression de manière à laisser entrer la mousse dans les interstices du matériau. La mousse contient comme composant essentiel un agent pouvant abaisser la tension superficielle du liquide moussant, ce qui a pour résultat de créer une action de déshydratation/séchage sur le matériau supérieure à celle que l'on obtiendrait autrement.
摘要:
Use of an application of foam to air permeable sheet material by a variety of mechanical or pressure applied means in order to cause or allow the foam to enter the interstices of the material. The foam contains as an essential integer an agent capable of lowering the surface tension of the foaming liquid thereby effecting a dewatering/drying action on the material greater than that than would otherwise be applied.
摘要:
This invention relates to the application of a treatment agent to an air permeable substrate by forming a foam of a liquid containing or constituting the treatment agent and applying the foam to the substrate and causing or allowing the foam to transit the substrate and to be removed from the other side thereof in which process the foam is applied in an excess defined as a ratio of the foam transit liquid content of the material in which case the amount of treatment agent taken up by the substrate will be dependent solely on the concentration of the agent within the foam and not by the volume of the foam applied and further the amount of agent taken up by the substrate is substantially independent of the initial water or liquid content of the substrate.
摘要:
The invention relates to a method for the incorporation of an agent into structural substrate which comprises forming a pseudoplastic gel as defined in the specification comprising: an active agent at least one solvent therefor and at least one gel forming agent and thereafter applying said gel to the structure to be treated. The invention also includes apparatus comprising means for conveying a structure 1 to a coating station (2, 6) coating means (2, 6) at said coating station to supply a coating of pseudoplastic gels at a predetermined depth to said structure surface and to urge the gel into contact with the structure surface whereby a predetermined gel penetration of the structure is achieved before 75% of the solvent has evaporated and thereafter passing the material into a drying area 5 to complete the removal of the solvent.
摘要:
Un substrat poreux tel qu'un matériau textile est traité par une mousse. Avant le traitement, le substrat a une teneur d'humidité s'élevant jusqu'à 130% de la teneur d'eau de passage. On force la mousse à pénétrer dans le substrat poreux pour permettre le passage de la mousse à travers ce substrat, on provoque ou on attend la dissolution de la mousse à l'interface superficielle et à l'interface intérieure et on finit le traitement en éliminant ou en désactivant le réactif.
摘要:
This invention relates to a method of treating a surface with reagents. The method comprises:
(i) establishing a reagent in a liquid phase; (ii) forming a foam of said liquid phase; (iii) applying said foam to said surface to be treated; (iv) causing or allowing the foam to collapse at the interface of said surface being treated to deposit the reagent thereon and thereafter removing or deactivating the reagent on said surface when the treatment is complete, whereby the rate of foam collapse is controlled to controi the rate of application of the reagent to the said surface.