03-12-2020 дата публикации
Номер: US20200378057A1
Принадлежит:
Nonwovens having low-density and resilience have a chemical formulation applied on one surface (e.g., a top surface) by any of various application methods. Then, the chemical formulation is forced to move toward the opposite surface of the nonwoven (e.g., move downward through the nonwoven from top to bottom). The chemical-treated nonwoven is dried to fix the chemical on the nonwovens. Movement through the nonwoven is performed in a controlled fashion so that after drying the distribution of a chemical formulation throughout the nonwoven (e.g., from the top surface to the bottom surface of a nonwoven) is controlled. 1. A chemical treatment method for a nonwoven , comprising:applying a chemical formulation to one surface of a nonwoven having low-density and resilience;distributing the chemical formulation through a thickness of the nonwoven by a physical process; anddrying the chemical formulation distributed within the nonwoven after the distributing step.2. The chemical treatment method of claim 1 , wherein said applying step is performed using an application device selected from the group consisting of non-contact digital chemical deposition technology claim 1 , valve jet technology claim 1 , spraying claim 1 , foam application claim 1 , digital printing claim 1 , roller coating claim 1 , doctor blade coating claim 1 , and screen/rotary printing.3. The chemical treatment method of wherein said chemical formulation includes one or more of water/oil repellents claim 1 , antimicrobials claim 1 , flame retardants claim 1 , microencapsulated scents claim 1 , microencapsulated cosmetics claim 1 , microencapsulated essential oils claim 1 , microencapsulated phase change materials (PCMs) claim 1 , probiotics claim 1 , odor control agents claim 1 , photocatalytic agents claim 1 , UV absorbers claim 1 , anti-allergens claim 1 , probiotics claim 1 , hydrophilic agents claim 1 , hand modifying agents claim 1 , antistatic agents claim 1 , insect repellents claim 1 , and ...
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