High-barrier compound membrane sheet and preparing technology thereof

High-barrier compound membrane sheet and preparing technology thereof

  • CN 105,313,291 A
  • Filed: 12/04/2015
  • Published: 02/10/2016
  • Est. Priority Date: 12/04/2015
  • Status: Active Application
First Claim
Patent Images

1. the multiple film sheet preparation technology of high-barrier, is characterized in that:

  • comprise the following steps;

    (1) raw material drying;

    by little for sheet stock drying 4 ~ 4.5 up to water content <

    0.01%;

    (2) raw material plasticizing;

    dried sheet stock delivers to single screw extrusion machine fusion plastification;

    (3) discharging is filtered;

    the sheet stock of fusion plastification is transported to die head after net filtration after filtration;

    Wherein screen pack is by the automatic draping of on-line automatic net-changing device, is provided with and Lou expects pallet below screen pack, and the sheet stock centralized recovery leaking the access of material pallet utilizes;

    (4) multiple film is extruded;

    the outer surface coating PP film of a roller feed side of three-roller, the outer surface coating high-isolation film of No. two roller feed sides of three-roller, a roller and No. two rollers relatively rotate the superimposed traction by PP film and high-isolation film, and the sheet stock jet flow of fusion plastification is rolled through a roller and No. two rollers rear haulage to three roller of shaping and obtained high-barrier to forming three-decker between PP film and high-isolation film and answer film sheet by die head simultaneously;

    Wherein,Die head extruded velocity is 180kg/h, and die head aperture is 0.25 ~ 2.86mm;

    Described PP film is transparent or the PP film of color printing picture and text;

    Described high-isolation film is transparent or the high-isolation film of color printing picture and text;

    The roll-in of three-roller is 190 ~ 550kg/cm;

    Roller, No. two rollers and No. three rollers are equipped with water-cooling system respectively;

    (5) sheet material winding;

    multiple for obtained high-barrier film sheet is batched rolling by material collecting device.

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