A kind of biaxially stretched polypropylene bag-making film in alpine zone and preparation method thereof

A technology of biaxial stretching and polypropylene, applied in the direction of chemical instruments and methods, synthetic resin layered products, layered products, etc., can solve the problems of less than 500,000 tons of production capacity and limit the company's development, and achieve easy promotion and use, adaptability The effect of strong and good technical effect

Active Publication Date: 2018-09-18
KINWIN PLASTIC IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the cold weather in the Northeast restricts the development of BOPP. In winter, the workshop temperature is around 15°C and the humidity is around 25%. Many products cannot be produced, and the production capacity is far below 500,000 tons, which seriously limits the company's development.

Method used

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  • A kind of biaxially stretched polypropylene bag-making film in alpine zone and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Preparation of Antistatic Agent-AT1

[0032] (1) 75 kilograms of octadecylamine, 8.3 kilograms of N, N-bis(hydroxyethyl) cocamide, and 16.7 kilograms of boric acid alkyl alcohol amine ester are added to the high mixer and mixed into the reaction kettle to feed ethylene oxide Addition reaction of 12.5 kg of alkanes to obtain modifier.

[0033] (2) Mix modifiers, monoglycerides, tris(2,4-di-tert-butyl)phenyl phosphite, and polypropylene in percentages by weight of 12%, 8%, 0.3%, and 79.7% evenly to obtain a mixture material;

[0034] (3) Add the mixture into THJ-high-speed, high-torque parallel twin-screw mixing extruder to melt and extrude to make an antistatic masterbatch. The extrusion temperature is 210°C, the pressure is 6Mpa, the speed is 500rpm, and the screw diameter is 75mm. , aspect ratio 40:1;

[0035] (4) cooling and drying the antistatic masterbatch made in step (3), pelletizing;

[0036] (5) The antistatic masterbatch after pelletizing was circulated, dr...

Embodiment 2

[0038] Preparation of antistatic agent-AT2

[0039] (1) 75 kilograms of octadecylamine, 8.3 kilograms of N, N-bis(hydroxyethyl) cocamide, and 16.7 kilograms of boric acid alkyl alcohol amine ester are added to the high mixer and mixed into the reaction kettle to feed ethylene oxide Addition reaction of 12.5 kg of alkanes to obtain modifier.

[0040] (2) Mix modifiers, monoglycerides, tris (2,4-di-tert-butyl) phenyl phosphite, and polypropylene in percentages by weight of 8%, 12%, 0.3%, and 79.7% to obtain a mixture material;

[0041] (3) Add the mixture into THJ-high-speed, high-torque parallel twin-screw mixing extruder to melt and extrude to make an antistatic masterbatch. The extrusion temperature is 210°C, the pressure is 6Mpa, the speed is 500rpm, and the screw diameter is 75mm. , aspect ratio 40:1;

[0042] (4) cooling and drying the antistatic masterbatch made in step (3), pelletizing;

[0043] (5) The antistatic masterbatch after pelletizing was circulated, dried, ...

Embodiment 3

[0045]The bag-making film of the present embodiment includes raw materials in the following percentages by weight: the upper surface layer includes: homopolypropylene 97.5%, anti-sticking agent 2.5%; the core layer includes: homopolypropylene 97.4%, antistatic agent 1.6%, smooth agent 1.0%; the lower surface layer includes: homopolypropylene 98%, anti-sticking agent 2.0%; wherein the antistatic agent is AT1 prepared in Example 1; the thickness of the upper surface layer is 1.0 μm, and the thickness of the core layer is 18.0 μm , The thickness of the lower surface layer is 1.0 μm.

[0046] Concrete preparation method is as follows:

[0047] (1) Feeding: Put the raw materials of the upper surface layer, the core layer and the lower surface layer into the respective corresponding twin-screw extruders;

[0048] (2) Extrusion and plasticization: melt and extrude the raw materials in the twin-screw extruder at a temperature of 250°C;

[0049] (3) Cast sheet cooling: The melt extru...

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Abstract

The invention relates to the technical field of BOPP (biaxially-oriented polypropylene) film processing, in particular to a BOPP bag making film for the high and cold area and a preparation method of the BOPP bag making film. The bag making film comprises an upper surface layer, a core layer and a lower surface layer, wherein the upper surface layer comprises homo-polypropylene and an adhesive; the core layer comprises homo-polypropylene, an antistatic agent and a slipping agent; the lower surface layer comprises homo-polypropylene and an adhesive; the antistatic agent comprises raw materials as follows: a modifier, monoglyceride, an antioxidant and polypropylene; the modifier is prepared from ethoxylated octadecylamine, N,N-bis (2-Hydroxyethyl)coconut fatty acid amide and alkyl alcohol amine ester borate through compounding. The BOPP bag making film has an excellent technical effect, and the technical problem about static electricity resistance during production and use of BOPP films in the northeastern region of China is solved.

Description

technical field [0001] The invention relates to a biaxially stretched polypropylene bag-making film in an alpine zone and a preparation method thereof, belonging to the technical field of biaxially stretched polypropylene film processing. Background technique [0002] Biaxially oriented polypropylene (BOPP) film has the advantages of light weight, non-toxic, odorless, moisture-proof, high mechanical strength, good dimensional stability, good printing performance, good transparency, etc. It is widely used in food, candy, cigarettes, tea , fruit juice, milk, textiles and other packaging fields, has the reputation of "Packaging Queen". The wide application, low pollution and protection of forest natural resources make BOPP film a more popular packaging material than paper and polyvinyl chloride (PVC); the simple and reliable manufacturing process and reasonable price make it a more popular packaging material than two-way film. Stretched polyester (BOPET) film and biaxially ori...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L23/12C08K5/00C08K5/17C08K5/20C08K5/55C08K5/526C08J3/22B32B27/18B32B27/32
CPCB32B27/18B32B27/32C08J3/226C08J5/18C08J2323/12C08J2423/12C08L23/12C08L2201/04C08K5/00C08K5/17C08K5/20C08K5/55C08K5/526
Inventor 尹望林张爱民周理洋丁海军
Owner KINWIN PLASTIC IND
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