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Wednesday, 03 June 2020

I am facing a problem of Poor Adhesion

4 Posts

Thursday 19 March 1998 1:00:00 am

On highly plasticized PVC artificial leather, printing by vinyl screen inks create a
problem of poor adhesion. Kindly advise some additives to improve adhesion on this
substrate.

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Monday 20 April 1998 1:00:00 am

Flexible PVC, which is used as leathercloth, contains a large proportion of plasticisers which tend to migrate and exude from the material, so giving rise to adhesion problems when coatings or printing inks are applied.

 

As always, pretreatment of such a surface before application of a coating is of great significance: in the case of PVC, cleaning with an aqueous alkaline cleaner is advisable.

 

In general, plasticiser migration may be suppressed in PVC by applying flexible, single-layer coatings or primers. The binders for these coatings may be based on PUR, PVC or CAB, but their flexibility should be tailored to the topcoat.

 

Another approach is to use adhesion promoters as additives in the coating formulation. It is difficult to make an unequivocal recommendation, but organosilane compounds, especially silanes having amine functional groups, such as aminotriethoxysilane, are probably well suited to this task, although other aminosilanes may also be considered.

prasad naidu

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Friday 04 October 2019 6:43:39 pm

I have PVA formula you want just contact me

my email:- prasadnaidu589@gmail.com

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Thursday 24 October 2019 12:36:56 pm

Adhesion promoters (AP) are bi-functional materials that increase adhesive strength between the coating and the substrate and sometimes are referred to as coupling agents. Unlike priming systems, adhesion promoters are generally applied at thinner film thicknesses.

Adhesion Promoters Market is expected to grow in future with huge application potential. Get Sample Copy of this Report  https://www.orianresearch.com/request-sample/1278307 

Report features Adhesion promoters Market overview, top manufacturers, size, share, growth, application, product types, regional demand, production, sales, revenue and future business opportunity.

Top manufacturers are covered:
BASF, Arkema, Evonik Industries, Momentive Performance Materials, Eastman Chemical Company, DOW Corning etc.

Segment by Type

  • Silane
  • Maleic Anhydride
  • Chlorinated Polyolefins
  • Titanate & Zirconate
  • Others

Segment by Application

  • Plastics & Composites
  • Paints & Coatings
  • Rubber
  • Adhesives
  • Metals
  • Others

Henry Huang
PROF.

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Sunday 19 January 2020 3:52:30 am

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