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Thermoplastic composite membrane and production technology thereof

A technology of composite film and heating sheet, which is applied in the field of composite film, can solve the problems of poor thermoplasticity of polypropylene composite film and aging of polypropylene composite film, and achieve the solution of poor thermoplastic effect, excellent barrier property and strong corrosion resistance Effect

Active Publication Date: 2020-07-10
ANHUI JIE CHENG PACKAGING PROD CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a thermoplastic composite film and its production process, which can solve the problem of poor thermoplasticity of the existing polypropylene composite film and the aging problem of the polypropylene composite film when it is exposed to the air for a long time

Method used

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  • Thermoplastic composite membrane and production technology thereof
  • Thermoplastic composite membrane and production technology thereof
  • Thermoplastic composite membrane and production technology thereof

Examples

Experimental program
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preparation example Construction

[0033] The preparation technology of modified polypropylene layer comprises the following steps:

[0034] Step 1: Put the high-density polyethylene in a vacuum drying oven with a temperature of 60-65°C and dry it for 60-90min, place the polypropylene in a vacuum oven with a temperature of 80-85°C, and dry it for 120- 150min, cooling, then the high-density polyethylene that is 15-25 parts by weight and the polypropylene that parts by weight are 75-85 mix homogeneously, pour into the feed inlet 5 of twin-screw extruder;

[0035] Step 2: start the first heating chip 23, the second heating chip 24, the third heating chip 25, the fourth heating chip 26, the fifth heating chip 27 and the sixth heating chip 28, thereby preheating the extruding tube 30, the first The heating temperature of the heating sheet 23 is 170-175°C, the heating temperature of the second heating sheet 24 is 180-185°C, the heating temperature of the third heating sheet 25 is 188-192°C, and the heating temperatur...

Embodiment 1

[0047] A thermoplastic composite film, the thermoplastic composite film sequentially comprises a nanoscale titanium dioxide layer, a polyethylene terephthalate layer, a modified polypropylene layer, and a polyethylene terephthalate layer from outside to inside and the nanoscale titanium dioxide layer, the thickness of the two nanoscale nanoscale titanium dioxide layers is 11 μm, the thickness of the two polyethylene terephthalate layers is 16 μm, and the thickness of the modified polypropylene layer is 30 μm, the modified polypropylene layer is obtained by casting modified polypropylene through a casting machine, and the modified polypropylene is obtained by mixing high-density polyethylene with 20 parts by weight and polypropylene with 80 parts by weight Obtained after melt blending and extruding through a twin-screw extruder;

[0048] The preparation technology of modified polypropylene layer comprises the following steps:

[0049] Step 1: Place the high-density polyethylen...

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Abstract

The invention discloses a thermoplastic composite membrane. The thermoplastic composite membrane comprises a nanoscale titanium dioxide layer, a polyethylene glycol terephthalate layer, a modified polypropylene layer, a polyethylene glycol terephthalate layer and a nanoscale titanium dioxide layer. The thicknesses of the two nanoscale titanium dioxide layers range from 10 micrometers to 15 micrometers, the thicknesses of the two polyethylene glycol terephthalate layers range from 15 micrometers to 18 micrometers, and the thickness of the modified polypropylene ranges from 25 micrometers to 50micrometers. The modified polypropylene layer is obtained in the mode that modified polypropylene is cast by a casting machine, and the modified polypropylene is obtained in the mode that by weight, 15-25 parts of high-density polyethylene and 75-85 parts of polypropylene are mixed and subjected to melt blending extrusion by a double-screw extruder. The problem that an existing polypropylene composite membrane is poor in thermoplasticity and the problem that the polypropylene composite membrane can be aged when the polypropylene composite membrane is exposed in the air for a long time can be solved.

Description

technical field [0001] The invention relates to the technical field of composite films, in particular to a thermoplastic composite film and a production process thereof. Background technique [0002] Polypropylene is a thermoplastic synthetic resin with excellent performance. It is a colorless and translucent thermoplastic lightweight general-purpose plastic with excellent corrosion resistance and mechanical properties. However, polypropylene has poor comprehensive mechanical properties, poor low-temperature toughness, and poor dimensional stability. Inadequate aging resistance and other shortcomings, so that when polypropylene composite film is used to produce polypropylene composite film, polypropylene composite film has poor thermoplasticity, and polypropylene composite film will age when exposed to air for a long time. [0003] Publication number: CN102286453A, which specifically discloses a cellulose acetate / polypropylene composite film prepared from cellulose acetate a...

Claims

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Application Information

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IPC IPC(8): B05D7/04B05D7/24B05D5/06B05D5/00B29D7/01B29B9/06
CPCB05D7/04B05D7/24B05D7/54B05D5/06B05D5/00B29D7/01B29B9/06B05D2201/02B05D2451/00B05D2508/00B05D2420/01
Inventor 王跃杰葛振宗孙自权
Owner ANHUI JIE CHENG PACKAGING PROD CO LTD
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