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Method for making inorganic synthetic paper

A manufacturing method and technology for synthetic paper, applied in the field of paper manufacturing, can solve the problems of large difference in transverse and longitudinal tensile strength, uneven light shielding, poor surface smoothness, etc., achieve uniform density and shielding rate, promote industrial upgrading, smooth surface effect

Inactive Publication Date: 2018-03-13
QUANTA ENG & CONSULTING CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The main purpose of the present invention is to provide an inorganic synthetic paper with the disadvantages of uneven thickness, large difference in transverse and longitudinal tensile strength, poor surface smoothness (high coefficient of friction) and uneven light shielding properties of the synthetic paper produced in the prior art. Feasible Manufacturing Method of Synthetic Paper

Method used

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  • Method for making inorganic synthetic paper
  • Method for making inorganic synthetic paper

Examples

Experimental program
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Effect test

Embodiment 1

[0052] This embodiment accounts for 65% calcium carbonate by weight, 30% polypropylene (PP) (flow index (MFI) is between 2.5~3g / 10min, and tensile strength is more than 300kg / c㎡ (or 4500psi) homogeneous Monomer), 2.5% isopropyl triisostearyl titanate coupling agent (coupling agent), 1.5% ethoxy lauramide antistatic agent and 1% monoglyceride stearate lubricant as raw materials, after The large-scale continuous high-speed mixer continuously mixes and stirs, and then heats the raw materials to a temperature of 120-170°C to melt the raw materials, and then continues to heat the melted raw materials to 180-190°C to make the raw materials reach a uniform fusion state, and then mix the raw materials The first raw material obtained by extruding and pelletizing by a high-speed shearing machine. Next, feed the first raw material into the extruder for heating and melting at 200-250°C, then use a slit former (T-die) to form a soft thick sheet with a single-layer or three-layer structure,...

Embodiment 2

[0054] This embodiment accounts for 75% calcium carbonate by weight, 20% polypropylene (PP) (flow index (MFI) is between 2.5~3g / 10min, and tensile strength is more than 300kg / c㎡ (or 4500psi) homogeneous Monomer), 2.5% isopropyl triisostearyl titanate coupling agent (coupling agent), 1.5% ethoxylated lauryl amide antistatic agent and 1% monoglyceride stearate lubricant raw materials, through and The physical property test data of the inorganic synthetic paper with a thickness of 35 microns (μm) and 70 microns (μm) obtained by the same method as in Example 1 are shown in Table 1:

[0055] According to Table 1, Example 1 and Example 2, the inorganic synthetic paper has uniform thickness, density and shading rate, high whiteness index and gloss, low difference in transverse and longitudinal tensile strength, and transverse and longitudinal fracture. Uniform dot elongation, low coefficient of friction (smooth surface) and other advantages of excellent physical strength; therefore, ...

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Abstract

The invention discloses a method for making inorganic synthetic paper. After first raw materials mainly composed of inorganic mineral powder, polypropylene (PP) and a modifier and second raw materialscomposed of reclaimed materials for preparing the inorganic synthesis paper are heated and fused through an extruder, a molten sheet of a single-layer structure or a three-layer structure is formed through a thin seam former (T-type mold), a sheet even in thickness and appropriate in crystallinity degree is formed through fast cooling molding, and then the inorganic synthetic paper is made through longitudinal drawing treatment, transverse drawing treatment, surface treatment and winding or cutting treatment. The production process is free of rejection ratio, good thickness uniformity, finished product density, finished product opaqueness and physical strength are achieved, the inorganic synthetic paper can be applied to various document, printing and packaging paper, cultural paper, synthetic paper, plastic films and thick materials, and the aim of widening the application range of the inorganic synthetic paper is achieved.

Description

technical field [0001] The invention relates to the technical field of paper manufacturing, in particular to the first raw material composed of inorganic mineral powder, polypropylene (PP) and a modifier, and the second raw material composed of recycled materials in the process of preparing inorganic synthetic paper. Method for producing inorganic synthetic paper. Background technique [0002] Inorganic synthetic paper, commonly known as environmentally friendly synthetic paper, is a viable environmentally friendly paper option among pulp substitutes. Inorganic synthetic paper is made by mixing a large amount of inorganic mineral powder with resin instead of wood pulp. Wood pulp is no longer needed in the manufacturing process, so there is no need to cut down a large number of trees for paper production, and There is also no need to use a large amount of water to prepare wood pulp, so there will be no problem of water pollution, which makes inorganic synthetic paper gradual...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C69/00B29B9/06B29K509/00B29K23/00B29L7/00
CPCB29C48/0018B29B9/06B29C48/0022B29C48/022B29C48/07B29K2023/12B29K2509/00B29L2007/00
Inventor 林德培林欣宇许凯翔
Owner QUANTA ENG & CONSULTING CO LTD
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