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Polypropylene woven bag and preparation method thereof

A woven bag and polypropylene technology, which is applied in the field of packaging materials, can solve the problems of low breaking force and tensile strength, and achieve the effects of high tensile strength, good wear resistance and easy availability of raw materials

Inactive Publication Date: 2015-07-22
SUZHOU DINGLI PACKAGING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The invention provides a polypropylene woven bag with high breaking force and tensile strength and a preparation method thereof, which solves the technical problems of low breaking force and tensile strength of the existing polypropylene woven bag

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Step 1: Weigh 100 parts of PP according to the ratio of parts by mass, 0.01 parts of ultraviolet absorber UV-327, 20 parts of calcium carbonate, 1 part of zinc white, 2 parts of titanium dioxide, 0.02 parts of antioxidant 1010, and 0.02 parts of antioxidant 1010. 0.05 part of agent 168, 0.1 part of antioxidant DLTP, 40 parts of talcum powder, and 50 parts of dioctyl diphthalate.

[0023] Step 2: Put all the raw materials into a high-speed mixer and mix evenly. The temperature of the mixer is 100°C, and mix for 5 minutes.

[0024] The third step: put the mixed materials into the twin-screw extruder, the temperature of the extruder is 210°C, 215°C, 220°C, 225°C, 230°C, the temperature of the head is 240°C, the temperature of the cooling water tank is 40°C, the total traction The elongation is 5 times, the temperature of the heat setting roller is 160°C, and the shrinkage rate of the flat yarn is 1%.

[0025] Product impact strength 30kJ / m 2 , tensile strength 35MPa; low...

Embodiment 2

[0027]Step 1: Weigh 100 parts of PP according to the ratio of parts by mass, 0.2 parts of ultraviolet absorber UV-327, 40 parts of calcium carbonate, 5 parts of zinc white, 8 parts of titanium dioxide, 0.08 parts of antioxidant 1010, and 0.08 parts of antioxidant 1010. 0.25 parts of agent 168, 0.5 parts of antioxidant DLTP, 60 parts of talcum powder, and 70 parts of dioctyl diphthalate.

[0028] Step 2: Put all the raw materials into a high-speed mixer and mix evenly. The temperature of the mixer is 120°C, and mix for 25 minutes.

[0029] The third step: put the mixed materials into the twin-screw extruder, the temperature of the extruder is 250°C, 255°C, 260°C, 265°C, 270°C, the temperature of the head is 260°C, the temperature of the cooling water tank is 60°C, the total traction The elongation is 7 times, the temperature of the heat setting roller is 180°C, and the shrinkage rate of the flat yarn is 5%.

[0030] Product impact strength 35kJ / m 2 , tensile strength 40MPa; l...

Embodiment 3

[0032] Step 1: Weigh 100 parts of PP according to the ratio of parts by mass, 0.05 parts of ultraviolet absorber UV-9, 25 parts of calcium carbonate, 2 parts of zinc white, 3 parts of titanium dioxide, 0.04 parts of antioxidant 1010, and 0.04 parts of antioxidant 1010. 0.1 part of agent 168, 0.2 part of antioxidant DLTP, 45 parts of talcum powder, and 55 parts of dioctyl diphthalate.

[0033] Step 2: Put all the raw materials into a high-speed mixer and mix evenly. The temperature of the mixer is 100°C, and mix for 5 minutes.

[0034] The third step: put the mixed materials into the twin-screw extruder, the temperature of the extruder is 210°C, 215°C, 220°C, 225°C, 230°C, the temperature of the head is 240°C, the temperature of the cooling water tank is 40°C, the total traction The elongation is 5 times, the temperature of the heat setting roller is 160°C, and the shrinkage rate of the flat yarn is 1%.

[0035] Product impact strength 40kJ / m 2 , tensile strength 45MPa; low d...

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Abstract

The invention discloses a polypropylene woven bag and a preparation method thereof. The polypropylene woven bag comprises the following raw materials: PP (polypropylene), an ultraviolet absorbent, calcium carbonate, zinc white, titanium dioxide, an antioxidant 1010, an antioxidant 168, an antioxidant DLTP, talcum powder and dioctyl bisphthalate. The polypropylene woven bag has the impact strength of 30-50 kJ / m<2> and the tensile strength of 35-55 MPa; the polypropylene woven bag is low in density, good in toughness, good in wear resistance and high in tensile strength, and has the bending strength of 1,850-2,250 MPa and the breaking force of 30-50 N; the polypropylene woven bag is good in heat resistance and good in flowability, the raw materials are simple and easily available, the preparation method is simple, and the polypropylene woven bag has the melting point of 130-170 DEG C and the elongation rate of 200-400%, can be widely produced and continuously replaces an existing material.

Description

technical field [0001] The invention relates to the technical field of packaging materials, in particular to a polypropylene woven bag and a preparation method thereof. Background technique [0002] Polypropylene woven bag, also known as snakeskin bag. It is a kind of plastic, used for packaging, and its raw materials are generally various chemical plastic materials such as zinc white and polypropylene. Weaving density refers to the number of warp and weft yarns in a 100mm×100mm braided fabric. The national standard GB / T8946-1998 stipulates that "flatten the bag, delineate two squares of 100mm x 100mm at the upper and lower corners of the bag, and the outer side of the square is 100mm away from the edge line of the bag. Visually measure the warp and weft of the square. , taking the average value, and counting when the end point is less than one at the end, it is counted as one." The national standard stipulates the weaving density and the density tolerance at the same tim...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/12C08K13/02C08K3/26C08K3/22C08K3/34C08K5/12C08K5/134B29C47/92B29C48/92
CPCC08K3/22B29C48/92B29C2948/92704C08K3/26C08K3/34C08K5/12C08K5/1345C08K5/526C08K2003/2241C08K2003/2296C08K2003/265C08L2201/08C08L23/12
Inventor 顾建芳
Owner SUZHOU DINGLI PACKAGING
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