• Core paper layer
  • 1

Core paper layer

  • 26/12/2018 09:05:59

The lower layer of the resin impregnated paper is a core paper. Usually, the unbleached paper is impregnated with a phenol formaldehyde resin to a resin content of 20% to 30% (the amount of resin in the resin-impregnated paper). The core paper has a basis

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