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Five layer co-extruding biaxial stretched synthetic PP paper and its prepn process

A technology of biaxial stretching and synthetic paper, which is applied in the direction of chemical instruments and methods, synthetic resin layered products, layered products, etc., can solve the problems that the stiffness of synthetic paper is greatly affected, and the compatibility is greatly different. Achieve the effect of high stiffness, fine and smooth surface, and low density

Inactive Publication Date: 2006-10-18
申达集团有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, because the sub-layer foaming layer is made of inorganic foaming agent (calcium carbonate), and the compatibility of inorganic foaming agent and polypropylene is quite different, it has a greater impact on the stiffness of synthetic paper.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Preparation of double-bright five-layer co-extruded biaxially oriented PP synthetic paper

[0033] Step 1. Dry the raw materials and masterbatch

[0034] Dry the calcium carbonate masterbatch, titanium dioxide masterbatch, PBT masterbatch, polypropylene resin, and EMMA masterbatch at 40-120 degrees for 1-7 hours

[0035] Step 2. Five layers are co-extruded into the same die

[0036] 2.1. The uppermost layer (A layer) and the lowermost layer (E layer) are high-gloss resin layers, which are composed of the following raw materials in parts by weight: polypropylene resin 90, anti-blocking agent masterbatch 3, slip agent masterbatch 2, EMMA Masterbatch 2, Calcium Carbonate Masterbatch 1, Titanium Dioxide Masterbatch 1, Antioxidant Masterbatch 1. After being uniformly stirred in the mixing hopper at the front end of the extruder, the resin is melted and plasticized by a single-screw extruder at 140-270°C, and extruded into the uppermost layer (A layer) and the lowermost lay...

Embodiment 2

[0046] Preparation of five-layer co-extruded biaxially oriented PP synthetic paper with one side bright and one side white

[0047] Step 1. Dry raw materials and masterbatch

[0048] Dry the calcium carbonate masterbatch, titanium dioxide masterbatch, PBT masterbatch, polypropylene resin, polyethylene, and EMMA masterbatch at 40-120°C for 1-7 hours

[0049] Step 2. Five layers are co-extruded into the same die

[0050] 2.1. The uppermost (layer A) white matting layer is composed of the following raw materials in parts by weight: polypropylene resin 50, polyethylene 40, anti-blocking agent masterbatch 3, slip agent masterbatch 2, EMMA masterbatch 2, carbonic acid Calcium masterbatch 1, titanium dioxide masterbatch 1, antioxidant masterbatch 1. After being uniformly stirred in the mixing hopper at the front end of the extruder, the resin is melted and plasticized by a single-screw extruder at 140-270°C, and extruded into the flow channel of the uppermost layer (A layer) of the...

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Abstract

The present invention relates to five layer co-extruded biaxial stretched synthetic PP paper and features the five layer co-extruded superposed composite film structure comprising the first or upper layer of high bright resin or white extinction material, the second layer of organic foamed material, the third layer of inorganic foamed material, the fourth layer of organic foamed material and the fifth layer of high bright resin. The preparation process includes separately extruding the fiver layers of material, and superposing with the same mold head to form the five layer composite film structure. The five layer co-extruded biaxial stretched synthetic PP paper features low density, high stiffness, fine and smooth surface, high whiteness, high surface tension maintenance, etc.

Description

Technical field: [0001] The invention relates to a five-layer co-extruded biaxially stretched PP synthetic paper. Specifically, the invention relates to the formulation and preparation method of five-layer co-extruded biaxially stretched PP synthetic paper. It belongs to the technical field of synthetic paper materials. Background technique: [0002] Synthetic paper is a new type of plastic material product, which has the characteristics of both plastic and paper. Synthetic paper not only retains the appearance, whiteness, stiffness, opacity, printing and writing properties of natural plant fiber paper, but also has excellent properties such as high strength, acid resistance, alkali resistance and pollution prevention of polyolefin plastic film. The main component of PP synthetic paper is polypropylene plastic, which can be reused and recycled, and can be completely burned, which will not affect the service life of the incinerator, and will not produce toxic gases, avoid s...

Claims

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Application Information

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IPC IPC(8): B32B5/18B29C47/06B29C47/56B29C55/14B29C69/02B32B27/00B32B27/18
Inventor 单卫忠张丕运虞道良
Owner 申达集团有限公司
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