Inorganic powder highly filled polyolefin decorative paper and manufacturing method thereof

A technology of inorganic powder and decorative paper, applied in the direction of chemical instruments and methods, layered products, synthetic resin layered products, etc., can solve the problems of large proportion of products, high processing difficulty, reduce melt viscosity, etc., and achieve mechanical strength High, good paper texture effect

Inactive Publication Date: 2011-06-08
宋旭
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Linear low-density polyethylene (LLDPE) has a regular molecular structure and tightly entangled molecular chains. Its film products have high tensile strength, excellent heat sealing performance and stress cracking resistance, etc. It is widely used in industry and agriculture, but processing is difficult. Big
Blending a certain proportion of HDPE, LDPE and LLDPE can effectively reduce the melt viscosity, improve the melt fluidity and processability, and reduce the material cost when the inorganic powder filling amount reaches more than 60%, but the proportion of the product is large. Therefore, it is necessary to adopt the specific gravity reduction technology to reduce the specific gravity. At the same time, it can also reduce the hardness of the material, improve the softness, and obtain new materials that can be used for decorative paper, especially to replace PVC-based decorative wall wallpaper and high-grade packaging paper. and printing paper

Method used

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  • Inorganic powder highly filled polyolefin decorative paper and manufacturing method thereof
  • Inorganic powder highly filled polyolefin decorative paper and manufacturing method thereof
  • Inorganic powder highly filled polyolefin decorative paper and manufacturing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028]Add 70% of heavy calcium carbonate into the high-speed mixer, and heat to 130±5°C to remove moisture. Add 0.85% titanate coupling agent for surface treatment, the temperature is controlled at 110±2°C, the treatment time is 20 minutes, add HDPE 6%, LLDPE 15%, LDPE 8% and antioxidant 0.15% and mix for 5 minutes, then use Extruded and granulated by twin-screw extruder to make special material. The blowing agent microspheres (the weight is 1.8% of the special material) of the special material of the above-mentioned preparation and the azodicarbonamide of the surface coating polyolefin elastomer, stearic acid and zinc oxide in the mixer at a low speed (80 rpm / min) mixed for 5 minutes to make foam. Blow the film according to the three extruders added to the three-layer co-extrusion blown film machine, the proportion of the three layers is 20% for the inner and outer layers, and 60% for the middle layer. The temperature in each zone of the extruder is set to 160-195°C, and t...

Embodiment 2

[0030] Add 60% of heavy calcium carbonate and 24.7% of kaolin into a high-speed mixer, and heat to 130±5°C to remove water. Add 0.3% titanate coupling agent for surface treatment, the temperature is controlled at 110±2°C, the treatment time is 20 minutes, add HDPE 6%, LLDPE 6.8%, LDPE 2% and antioxidant 0.2% and mix for 5 minutes, then use Extruded and granulated by twin-screw extruder to make special material. Get the special material of above-mentioned preparation and the microsphere (weight is 1.8% of special material) of sodium carbonate, sodium bicarbonate and citric acid mixture of surface coating liquid low-molecular polyisobutylene, low speed (60 rev / min) in mixer Mix for 8 minutes to make a foaming material, add it to the middle feed extruder in the three-layer co-extrusion blown film machine, and then take the special material (without foaming microspheres) prepared by the above process and add it to the three layers In the co-extrusion blown film machine, the inner...

Embodiment 3

[0032] Add 30% of heavy calcium carbonate, 27.5% of kaolin, 2% of wet-process white carbon black, and 13% of talcum powder into a high-speed mixer, and heat to 140±5°C to remove water. Add 2.5% of aluminate coupling agent for surface treatment, the temperature is controlled at 120±2°C, the treatment time is 15 minutes, add HDPE 9%, LLDPE 8.8%, LDPE 7% and antioxidant 0.2% and mix for 5 minutes, then use Put it into a pressurized internal mixer, mix at 150°C for 10 minutes, and then extrude and granulate through a twin-screw extruder to make a special material. Get the special material of above-mentioned preparation and the polymer microsphere (weight is 2.5% of special material) that contains low-boiling point liquid, mix 5 minutes at low speed (60 revs / min) in mixer and make foaming material, take foaming material Add it to the inner and outer layer feed extruder in the three-layer co-extrusion blown film machine, and then add the special materials (without foaming microspher...

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Abstract

The invention relates to inorganic powder highly filled polyolefin decorative paper. The invention is characterized in that the decorative paper is composed of three-layer sheets or films which are formed by carrying out co-extrusion on raw materials containing 2-15% of HDPE (high density polyethylene), 4-15% of LLDPE (linear low density polyethylene), 3-12.7% of LDPE (low density polyethylene), 45-90% of inorganic powder, 0.1-5% of foaming microspheres, 0.1-0.3% of antioxidant and 0.2-13% of inorganic powder activator by virtue of a T-shaped mould of a three-layer co-extrusion film blowing machine, wherein at least one layer is a foaming body; the upper layer and the lower layer of the decorative paper respectively account for 15-20wt% of the decorative paper, the middle layer accounts for 60-70wt% of the decorative paper; and the grain size of the inorganic powder is 2-15 microns, and the density of the inorganic powder is 0.4-0.95g/cm<3>. The surfaces of the films and sheets prepared by the invention are soft and have elasticity, the paper texture is good, the mechanical strength is high, and the relative density is 0.5-0.95g/cm<3>; and the invention has the advantages that thedensity of the inorganic powder highly filled non-polyvinyl chloride (PVC) polymer decorative paper is greatly reduced, the problem of poor mechanical strength of the foaming sheets and films is solved by virtue of a multilayer co-extrusion process, and an obvious technical effect is achieved.

Description

technical field [0001] The present invention relates to a decorative paper and its preparation method, in particular to provide a decorative paper with flame retardant performance, low density and high inorganic powder filling content manufactured from polyolefin resin mixture, active inorganic powder and foaming agent and its preparation method. Background technique [0002] Inorganic powder highly filled modified polyolefin materials are widely used in woven bags, packing belts, pipes, sheets and injection molding, extruded automobiles and household appliances spare parts, and cable insulation materials. The inventor adopts inorganic powder and polymer Olefin compounding is used to make polyolefin paper without plant fiber ("a modified polyolefin paper without plant fiber", Chinese patent, ZL200810190942.5), but the specific gravity of the product is large and the hardness of the film is high when the film thickness is large. Therefore, it is necessary to adopt specific g...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B27/18B32B27/32B29C47/92B29C48/92
CPCB29C48/0017B29C48/10B29C48/92B29C2948/92704B29C2948/92895B29C2948/92923B29C2948/92942
Inventor 宋旭李玉荣
Owner 宋旭
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