Shading polypropylene base film for photographic paper and preparation method of shading polypropylene base film

一种聚丙烯基膜、聚丙烯树脂的技术，应用在化学仪器和方法、应用、家里用具等方向，能够解决降低相纸基膜透光率、遮光性不良等问题，达到有利于水汽透过率、水汽透过率低、防止球晶形成的效果

Pending Publication Date: 2022-04-22
SICHUAN DONGFANG INSULATING MATERIAL CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Thereby providing a kind of defect that can improve the poor light-shielding property of photographic paper base film, reduce the light transmittance of photographic paper base film, can improve the water absorption of photographic paper base film, reduce water vapor transmission rate, also have high gloss, high surface energy Light-shielding polypropylene base film for photographic paper with good antistatic property and other characteristics and preparation method thereof

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] Preparation of core layer polypropylene composition: get 60 parts of polypropylene HE425H resin, 20 parts of titanium dioxide, 1 part of silane coupling agent (KH-550), 0.1 part / 0.2 part of antioxidant (1010 / 168), carbon black (SP5000 ) 0.1 part, 0.1 part of dispersant ethylene bis stearamide is granulated in a co-rotating twin-screw extruder with an aspect ratio of 32:1, the granulation temperature is 180 ° C, the main engine speed is 400 rpm / min, and the feeding speed is 25r / min to prepare the core layer polypropylene composition.

[0049] Preparation of surface layer polypropylene composition: 60 parts of polypropylene HJ730 resin, 3 parts of antistatic agent (rgastat P16), and 0.1 part of dispersant ethylene bisstearamide were pelletized in a co-rotating twin-screw extruder to obtain Surface layer polypropylene composition.

Embodiment 2

[0051] Preparation of core layer polypropylene composition: take 60 parts of polypropylene HE425H resin, 20 parts of titanium dioxide, 5 parts of talcum powder, 1 part of silane coupling agent (KH-550), 0.1 part / 0.2 part of antioxidant (1010 / 168) , 0.1 part of carbon black (SP5000), 0.1 part of dispersant ethylene bis stearamide was granulated in a co-rotating twin-screw extruder with an aspect ratio of 32:1, the granulation temperature was 185°C, and the speed of the main machine was 420rpm / min , the feeding speed is 28r / min, and the core layer polypropylene composition is prepared.

[0052] Prepare the surface layer polypropylene composition: granulate 60 parts of polypropylene HJ730 resin, 3 parts of antistatic agent (rgastat P18), and 0.1 part of dispersant ethylene bisstearamide in a co-rotating twin-screw extruder to obtain the surface layer Polypropylene composition.

Embodiment 3

[0054] Preparation of core layer polypropylene composition: get 60 parts of polypropylene T350 resin, 30 parts of kaolin, 1 part of silane coupling agent (KH-570), 0.1 part / 0.2 part of antioxidant (1010 / 168), carbon black (N330 ) 0.1 part, 0.1 part of dispersant ethylene bis stearamide was granulated in a co-rotating twin-screw extruder, the granulation temperature was 190°C, the main engine speed was 450rpm / min, and the feeding speed was 30r / min to obtain the core layer Polypropylene composition.

[0055] Prepare the surface layer polypropylene composition: granulate 70 parts of polypropylene HJ730 resin, 8 parts of antistatic agent (rgastat P18), and 0.1 part of dispersant ethylene bisstearamide in a co-rotating twin-screw extruder to obtain Surface layer polypropylene composition.

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Abstract

The invention discloses a shading polypropylene base film for photographic paper and a preparation method of the shading polypropylene base film. The shading polypropylene base film for the photographic paper is characterized in that the shading polypropylene base film for the photographic paper is formed by sequentially compounding a surface polypropylene composition layer, a core polypropylene composition layer and a surface polypropylene composition layer, the surface layer polypropylene composition is prepared by mixing, melting and extruding polypropylene resin, an antistatic agent and a dispersing agent; the core layer polypropylene composition is prepared by mixing, melting and extruding polypropylene resin, filler, a coupling agent, an antioxidant, carbon black and a dispersing agent; and respectively putting the core layer polypropylene composition and the surface layer polypropylene composition into a main machine and an auxiliary machine of three-layer co-extrusion casting extrusion equipment, and carrying out melt extrusion, cooling shaping and the like to obtain the shading polypropylene base film for the photographic paper. The shading polypropylene base film for photographic paper has the characteristics of good shading performance, low water vapor transmittance, excellent surface glossiness, high surface energy, excellent antistatic performance and the like, and is suitable for the fields of ink-jet printing, inkjet films and the like.

Description

technical field [0001] The invention belongs to a base film for photographic paper and its preparation, and relates to a light-shielding polypropylene base film for photographic paper and a preparation method thereof. The (prepared) light-shielding polypropylene base film for photographic paper of the invention can be applied to the fields of inkjet printing, inkjet film and the like. Background technique [0002] With the development of digital imaging and output technology, inkjet photo paper is more and more widely used in the market, and high-precision inkjet equipment puts forward higher requirements for the quality of inkjet photo paper. At present, there are three main types of inkjet printing photo paper on the market: ordinary high-gloss photo paper, RC gap type waterproof photo paper, and cast-coated photo paper. In the prior art, photographic paper substrates generally choose photographic base paper and RC photographic paper base, photographic base paper is made ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/12C08K3/22C08K5/544C08K5/134C08K5/526C08K3/04C08K5/20C08J5/18B32B27/32B32B27/18B32B27/20B32B27/06B29D7/01
CPCC08J5/18B32B27/32B32B27/18B32B27/20B32B27/08B29D7/01C08J2323/12C08K2003/2241C08K5/544C08K5/1345C08K5/526C08K3/04C08K5/20B32B2307/21B32B2307/41B32B2307/7246
Inventor 廖春赵贵红孙鹏周元友
Owner SICHUAN DONGFANG INSULATING MATERIAL CO LTD
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