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Composite paper and preparation method thereof and waterproof mailing bag

A composite paper and squaring technology, applied in chemical instruments and methods, postal envelopes, transportation and packaging, etc., can solve problems such as poor waterproof ability, low tensile strength, damaged objects, etc., to reduce weight and cost, and waterproof performance superior effect

Inactive Publication Date: 2017-06-13
GUANGDONG TENGEN IND GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing composite paper has poor waterproof ability and low tensile strength, and once the packing box or express envelope made of it encounters rainwater during transportation, it will damage the contents contained inside; and this packaging Boxes or express envelopes are easily damaged by external forces during frequent handling or subpackaging

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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  • Composite paper and preparation method thereof and waterproof mailing bag
  • Composite paper and preparation method thereof and waterproof mailing bag
  • Composite paper and preparation method thereof and waterproof mailing bag

Examples

Experimental program
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Effect test

preparation example Construction

[0031] The present invention also provides the preparation method of above-mentioned composite paper, such as figure 2 As shown, the process steps are as follows:

[0032] S1. Add PP and PE into the blender according to the mass ratio of 0.5-2:1-3, and carry out the mixing process to obtain the mixed mixing material.

[0033] The specific operation is: according to the mass ratio of 0.5~2:1~3, add the PP color masterbatch with a diameter of 3 mm and the PE color masterbatch with a diameter of 3 mm into the hopper of the mixer, and put them under normal temperature. , according to the rotation speed of 100-140 rpm, the mixing material is stirred for 10-20 minutes, and the mixing material is fully mixed so that the mixing is uniform, and the mixed mixing material is obtained and set aside.

[0034] When mixing materials, if the water or humidity of the color masterbatch material is high, increase the mixing time accordingly to ensure that the mixing material is dry; the mixing...

Embodiment 1

[0054] S1. According to the mass ratio of 1:2, weigh 50 kg of PP masterbatch with a diameter of 3 mm, weigh 100 kg of PE masterbatch with a diameter of 3 mm, and add PP and PE masterbatch together In the hopper of the mixing material mixer, at room temperature, according to the rotation speed of 120 rpm, the mixing material is stirred for 15 minutes, and the mixing material is fully mixed, so that the PP and PE two kinds of color masterbatch materials are evenly mixed, and the mixed mixing material is obtained.

[0055] S2. Send 50 kg of PP color masterbatch to the hopper of a horizontal extrusion molding machine, extrude at 200°C, and perform parallel stretching at a stretching rate of 200 m / min, and then cool at room temperature to obtain 50 grams per square meter of stretch film, and finally the stretch film is rolled into a cylinder.

[0056] S3. Send the stretched film cylinder into the shredding equipment, spread it out and convey it, and then use the cutter set on the s...

Embodiment 2

[0062] S1. According to the mass ratio of 2:3, weigh 40 kg of PP masterbatch with a diameter of 3 mm, weigh 60 kg of PE masterbatch with a diameter of 3 mm, and add PP and PE masterbatch together In the hopper of the mixing material mixer, at room temperature, according to the rotation speed of 100 rpm, the mixing material is stirred for 10 minutes, and the mixing material is fully mixed, so that the two kinds of masterbatches of PP and PE are evenly mixed, and the mixed material is obtained.

[0063] S2. Send 75 kg of PP color masterbatch and 25 kg of red toning pink masterbatch to the hopper of the horizontal extrusion molding machine, and after fully mixing in the hopper, extrude at 230°C and 300 meters Parallel stretching was carried out at a stretching rate of 1 / min, followed by cooling to obtain a stretched film of 70 g / m2, and finally the stretched film was rolled into a cylinder.

[0064] S3. Send the stretched film cylinder into the shredding equipment, spread it out ...

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Abstract

The invention discloses composite paper. The composite paper comprises kraft paper, a coating film layer and a woven layer, wherein the coating layer is comprises a PP and PE composite film and is 0.015-0.03mm in thickness; the woven layer is prepared through PP wires or by weaving PP and color matching pink master batch composite wires in a longitude and latitude crisscrossing manner. According to a layered structure of the composite paper, the kraft paper used as the surface layer is used for preventing the composite paper for water and tearing or piercing and is printed to enable good appearance and brand displaying effects; the coating film layer is the composite film prepared through the PP and PE composite material through which the waterproofing effect of the composite paper is further improved; the woven layer is the bottom layer and is prepared from the PP wires or by weaving the PP and color matching pink master batch composite wires in the longitude and latitude crisscrossing manner; such material and the weaving manner can effectively improve the tensile strength of the composite paper, and thus the composite paper can be prevented from being broken caused by extruding or tearing.

Description

technical field [0001] The invention relates to a preparation method of a composite layer paper, in particular to a composite paper and a preparation method thereof; and also to a waterproof express envelope bag made of the composite paper. Background technique [0002] In recent years, with the rapid rise of logistics and express delivery services, packaging boxes, packaging boxes, and express envelope bags made of composite paper are widely used. However, the existing composite paper has poor waterproof ability and low tensile strength, and once the packing box or express envelope made of it encounters rainwater during transportation, it will damage the contents contained inside; and this packaging Boxes or express envelopes are easily damaged by external forces during frequent handling or subpackaging. Contents of the invention [0003] Based on the above problems, the problem to be solved by the present invention is to provide a composite paper that is both waterproof...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Application Information

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IPC IPC(8): B32B29/06B32B27/32B32B27/20B32B27/10B32B27/12B32B37/06B65D27/00
CPCB32B29/06B32B27/10B32B27/12B32B27/20B32B27/32B32B37/06B32B2307/54B32B2307/558B32B2307/73B65D27/00
Inventor 罗耀东陈国酿邓凯吕保东颜跃华欧阳元秀
Owner GUANGDONG TENGEN IND GRP CO LTD
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