阅读说明：本技术 一种抗撕裂的食品包装袋薄膜及其制备方法 (Anti-tearing food packaging bag film and preparation method thereof ) 是由 魏明权 魏汪洋 于 2020-07-10 设计创作，主要内容包括：本发明公开了一种抗撕裂的食品包装袋薄膜及其制备方法,该用于抗撕裂的食品包装袋薄膜由以下质量份数的原料制成：线性高密度聚乙烯45-65份、聚丁二烯橡胶15-25份、聚丙二醇10-15份、醋酸纤维素7-15份、竹炭纤维微粒2-3份、抑菌剂5-12份、防老化剂2-4份、离子表面活性剂2-3份、增韧剂2-3份、偶联剂1-2份、聚乙烯蜡2-3份、海藻酸丙二醇酯1-2份、过硫酸铵1-3份、硬脂酸单甘油酯1-2份。有益效果：使得该食品包装袋薄膜具有较好的抗撕裂性,另外还具有良好的抗菌、防霉、防虫、防老化性能。(The invention discloses a tear-resistant food packaging bag film and a preparation method thereof, wherein the tear-resistant food packaging bag film is prepared from the following raw materials in parts by weight: 45-65 parts of linear high-density polyethylene, 15-25 parts of polybutadiene rubber, 10-15 parts of polypropylene glycol, 7-15 parts of cellulose acetate, 2-3 parts of bamboo charcoal fiber particles, 5-12 parts of bacteriostatic agent, 2-4 parts of anti-aging agent, 2-3 parts of ionic surfactant, 2-3 parts of toughening agent, 1-2 parts of coupling agent, 2-3 parts of polyethylene wax, 1-2 parts of propylene glycol alginate, 1-3 parts of ammonium persulfate and 1-2 parts of glycerol monostearate. Has the advantages that: the food packaging bag film has good tear resistance, and also has good antibacterial, mildew-proof, insect-proof and anti-aging properties.)

1. The tear-resistant food packaging bag film is characterized by being prepared from the following raw materials in parts by weight:

45-65 parts of linear high-density polyethylene, 15-25 parts of polybutadiene rubber, 10-15 parts of polypropylene glycol, 7-15 parts of cellulose acetate, 2-3 parts of bamboo charcoal fiber particles, 5-12 parts of bacteriostatic agent, 2-4 parts of anti-aging agent, 2-3 parts of ionic surfactant, 2-3 parts of toughening agent, 1-2 parts of coupling agent, 2-3 parts of polyethylene wax, 1-2 parts of propylene glycol alginate, 1-3 parts of ammonium persulfate and 1-2 parts of glycerol monostearate.

2. The tear resistant food packaging bag film of claim 1, wherein the toughening agent comprises the following raw material components: 50-75 parts of polyolefin elastomer, 20-30 parts of acrylonitrile-butadiene-styrene copolymer, 10-15 parts of polyvinyl acetate, 5-12 parts of ethylene propylene diene monomer, 2-5 parts of chain extender, 2-3 parts of zinc stearate and 2-3 parts of antioxidant.

3. The tear resistant food packaging bag film of claim 1, wherein the coupling agent comprises the following raw material components: 50-65 parts of polydimethylsiloxane, 20-30 parts of alanine, 10-15 parts of phenyltriethoxysilane, 10-12 parts of organic solvent, 3-6 parts of pyrrolidone carboxylic acid triethanolamine salt, 3-6 parts of collagen hydrolysate and 3-5 parts of hydrochloric acid.

4. The tear resistant food packaging bag film of claim 1 wherein the aging resistor comprises the following raw material components: 30-40 parts of terephthalic acid metal salt, 30-40 parts of phosphite ester, 20-30 parts of polyether modified polysiloxane wetting agent, 10-15 parts of aromatic amine antioxidant, 5-10 parts of aromatic isocyanate, 3-5 parts of dioctyl pyrophosphoryl group and 3-5 parts of sodium dodecyl sulfate.

5. The tear resistant food packaging bag film of claim 1, wherein the ionic surfactant comprises the following raw material components: 30-40 parts of succinic acid diester sodium sulfonate, 30-40 parts of linear alkyl benzene sodium sulfonate, 20-30 parts of high molecular polyethylene glycol diester, 10-12 parts of sodium hydroxymethyl cellulose, 3-5 parts of fatty alcohol diethanolamide, 3-5 parts of polyoxyalkylene compound, 3-5 parts of hydrophobic silicon dioxide and 2-5 parts of polygalactomannan.

6. A method of making a tear resistant food packaging film for use in the preparation of the infant formula of claim 1, comprising the steps of:

weighing all raw materials required by the tear-resistant food packaging bag film according to the parts by weight;

putting linear high-density polyethylene, polybutadiene rubber and polypropylene glycol into a high-temperature mixer, heating, mixing and stirring to a molten state;

then gradually adding cellulose acetate, bamboo charcoal fiber particles, a bacteriostatic agent, an anti-aging agent, an ionic surfactant, a toughening agent, a coupling agent, polyethylene wax, propylene glycol alginate, ammonium persulfate and glycerol monostearate in the stirring process of the mixture, and then continuously stirring uniformly;

loading the uniformly mixed mixture into a double-screw extruder for high-temperature extrusion treatment;

guiding the extruded raw materials into a blow molding machine for film blowing molding;

printing the formed plastic film with pictures and texts by a printing roller;

and (4) overlapping the two printed plastic films, and then cutting and sealing the edges through a hot press to form the packaging bag.

7. The method for preparing a tear-resistant food packaging bag film as claimed in claim 6, wherein in the step two, the heating temperature is 150-.

8. The method for preparing the tear-resistant food packaging bag film according to claim 6, wherein after the addition of the cellulose acetate, the bamboo charcoal fiber particles, the bacteriostatic agent, the anti-aging agent, the ionic surfactant, the toughening agent, the coupling agent, the polyethylene wax, the propylene glycol alginate, the ammonium persulfate and the glycerol monostearate is completed in the third step, the high-temperature mixer is pressurized at 240MPa, at the time, the temperature is 130-150 ℃, the stirring speed is 1350r/min, and the stirring time is 30-45 minutes.

9. The method for preparing a tear-resistant food packaging bag film according to claim 6, wherein the blowing temperature of the blowing machine in the fifth step is 200-225 ℃.

10. The method for preparing the tear-resistant food packaging bag film according to claim 6, wherein in the sixth step, after the plastic film is printed by the printing roller, the printing ink is subjected to a crosslinking reaction through irradiation of an ultraviolet lamp, so that the printing ink is cured.

Technical Field

The invention relates to the technical field of packaging bag preparation, in particular to a tear-resistant food packaging bag film and a preparation method thereof.

Background

The packaging bag is a bag for packaging various articles, so that the goods are convenient to transport and easy to store in the production flow process. The food packaging bag is widely applied to daily life and industrial production, is one of packaging designs, and is convenient for keeping food fresh and storing food in life, so that the product packaging bag is produced. The food packaging bag refers to a film container which is directly contacted with food and is used for containing and protecting the food. With the continuous improvement of the living standard of people, higher requirements are put forward on the performance and the application of the food packaging bag while the basic practical value of the food packaging bag is pursued. With the continuous improvement of living standard of people, various foods appear in the market, and food packaging bags with different shapes and colors appear, but the existing food packaging bags have poor tear resistance and are easy to break in the using process, and in addition, food packaging materials are directly contacted with the packaged foods, so that the food packaging materials have influence on the safety of the foods and further influence on the safety of human bodies, and are widely regarded.

An effective solution to the problems in the related art has not been proposed yet.

Disclosure of Invention

Aiming at the problems in the related art, the invention provides a tear-resistant food packaging bag film and a preparation method thereof, so as to overcome the technical problems in the prior related art.

Therefore, the invention adopts the following specific technical scheme:

in accordance with one aspect of the present invention, a tear resistant food packaging bag film is provided.

The tear-resistant food packaging bag film is prepared from the following raw materials in parts by weight:

45-65 parts of linear high-density polyethylene, 15-25 parts of polybutadiene rubber, 10-15 parts of polypropylene glycol, 7-15 parts of cellulose acetate, 2-3 parts of bamboo charcoal fiber particles, 5-12 parts of bacteriostatic agent, 2-4 parts of anti-aging agent, 2-3 parts of ionic surfactant, 2-3 parts of toughening agent, 1-2 parts of coupling agent, 2-3 parts of polyethylene wax, 1-2 parts of propylene glycol alginate, 1-3 parts of ammonium persulfate and 1-2 parts of glycerol monostearate.

Further, the toughening agent comprises the following raw material components: 50-75 parts of polyolefin elastomer, 20-30 parts of acrylonitrile-butadiene-styrene copolymer, 10-15 parts of polyvinyl acetate, 5-12 parts of ethylene propylene diene monomer, 2-5 parts of chain extender, 2-3 parts of zinc stearate and 2-3 parts of antioxidant.

Further, the coupling agent comprises the following raw material components: 50-65 parts of polydimethylsiloxane, 20-30 parts of alanine, 10-15 parts of phenyltriethoxysilane, 10-12 parts of organic solvent, 3-6 parts of pyrrolidone carboxylic acid triethanolamine salt, 3-6 parts of collagen hydrolysate and 3-5 parts of hydrochloric acid.

Further, the anti-aging agent comprises the following raw material components: 30-40 parts of terephthalic acid metal salt, 30-35 parts of phosphite ester, 20-30 parts of polyether modified polysiloxane wetting agent, 10-15 parts of aromatic amine antioxidant, 5-10 parts of aromatic isocyanate, 3-5 parts of dioctyl pyrophosphoryl group and 3-5 parts of sodium dodecyl sulfate.

Further, the ionic surfactant comprises the following raw material components: 30-40 parts of succinic acid diester sodium sulfonate, 30-40 parts of linear alkyl benzene sodium sulfonate, 20-30 parts of high molecular polyethylene glycol diester, 10-12 parts of sodium hydroxymethyl cellulose, 3-5 parts of fatty alcohol diethanolamide, 3-5 parts of polyoxyalkylene compound, 3-5 parts of hydrophobic silicon dioxide and 2-5 parts of polygalactomannan.

According to another aspect of the invention, a method of making a tear resistant food packaging bag film is provided.

The preparation method of the food packaging bag film for tearing resistance comprises the following steps:

weighing all raw materials required by the tear-resistant food packaging bag film according to the parts by weight;

putting linear high-density polyethylene, polybutadiene rubber and polypropylene glycol into a high-temperature mixer, heating, mixing and stirring to a molten state;

then gradually adding cellulose acetate, bamboo charcoal fiber particles, a bacteriostatic agent, an anti-aging agent, an ionic surfactant, a toughening agent, a coupling agent, polyethylene wax, propylene glycol alginate, ammonium persulfate and glycerol monostearate in the stirring process of the mixture, and then continuously stirring uniformly;

loading the uniformly mixed mixture into a double-screw extruder for high-temperature extrusion treatment;

guiding the extruded raw materials into a blow molding machine for film blowing molding;

printing the formed plastic film with pictures and texts by a printing roller;

and (4) overlapping the two printed plastic films, and then cutting and sealing the edges through a hot press to form the packaging bag.

Further, in the second step, in the process of heating and stirring the linear high-density polyethylene, the polybutadiene rubber and the polypropylene glycol, the heating temperature is 150-.

Further, after adding the cellulose acetate, the bamboo charcoal fiber particles, the bacteriostatic agent, the anti-aging agent, the ionic surfactant, the toughening agent, the coupling agent, the polyethylene wax, the propylene glycol alginate, the ammonium persulfate and the glycerol monostearate in the third step, pressurizing the high-temperature mixer, wherein the pressure is 240MPa, the temperature is 130-150 ℃, the stirring speed is 1350r/min, and the stirring time is 30-45 minutes.

Further, the blowing temperature of the blowing machine in the fifth step is 200-225 ℃.

Further, after the plastic film is printed by the printing roller in the sixth step, the printing ink is subjected to a crosslinking reaction through irradiation of an ultraviolet lamp, so that the printing ink is cured.

The invention adopts the following raw materials in parts:

linear high density polyethylene: the Linear Low Density Polyethylene (LLDPE) is non-toxic, tasteless and odorless milky white particles, and the density is 0.918-0.935 g/cm. Compared with LDPE, the LDPE has the advantages of high softening temperature and melting temperature, high strength, good toughness, high rigidity, high heat resistance, high cold resistance and the like, has good environmental stress crack resistance, high impact strength, high tear strength and other properties, can resist acid, alkali, organic solvents and the like, and can be widely used in the fields of industry, agriculture, medicine, sanitation, daily necessities and the like.

Polybutadiene rubber: polybutadiene rubber is a general synthetic rubber obtained by polymerizing 1, 3-butadiene as a monomer, high cis-butadiene rubber is firstly synthesized in the United states in 1956, and industrial production of cis-butadiene rubber is realized in 1967 in China. In the synthetic rubber, the yield and consumption of polybutadiene rubber are second only to styrene-butadiene rubber.

Polypropylene glycol: colorless to pale yellow viscous liquid. And is not volatilized. Has no corrosiveness. The molecular weight of the general product is 400 to 2050. Lower molecular weight polymers are soluble in water. Higher molecular weight polymers are only slightly soluble in water, soluble in oils, many hydrocarbons, and aliphatic alcohols, ketones, esters, and the like. The hydroxyl groups at both ends of the molecule can be esterified to form a monoester or diester. The monoester is nonionic surfactant, and can also react with alcohol to generate ether. Is a solvent for vegetable oil, resin and paraffin, and is also used for preparing alkyd resin, emulsifier, demulsifier, lubricating oil, plasticizer and the like. Obtained by condensing propylene oxide with propylene glycol under high pressure or in the presence of an acidic catalyst.

Cellulose acetate: cellulose acetate is a thermoplastic resin obtained by esterification of acetic acid as a solvent and acetic anhydride as an acetylating agent in the presence of a catalyst. Is the cellulose organic acid ester which is produced commercially at the earliest time in cellulose derivatives and is continuously developed. The cellulose acetate is used as a porous membrane material, and has the characteristics of high selectivity, large water permeability, simple processing and the like.

Polyethylene wax: also called polymer wax and is called polyethylene wax for short. It is widely used because of its excellent cold resistance, heat resistance, chemical resistance and wear resistance. In normal production, this wax can be added directly to the polyolefin process as an additive, which can increase the gloss and processability of the product. As a lubricant, the lubricant has stable chemical properties and good electrical properties. The polyethylene wax has good compatibility with polyethylene, polypropylene, polyvinyl acetate, ethylene propylene rubber and butyl rubber. Can improve the fluidity of polyethylene, polypropylene and ABS and the mold release property of polymethyl methacrylate and polycarbonate. Polyethylene wax has a stronger internal lubricating effect than PVC and other external lubricants.

Propylene glycol alginate: the alias alginic acid propylene diester, propylene glycol alginate ester and propylene glycol alginate ester are alginic acid compounds with partial carboxyl groups esterified by propylene glycol and partial carboxyl groups neutralized by alkali, are prepared by deep processing alginic acid extracted from natural seaweed, are white or light yellow powder in appearance, and are dissolved in water to form viscous colloid. Is often used as thickening, stabilizing and emulsifying agent of beverage products.

The invention has the beneficial effects that: the food packaging bag film is tear-resistant and is prepared from linear high-density polyethylene, polybutadiene rubber, polypropylene glycol, cellulose acetate, bamboo charcoal fiber particles, a bacteriostatic agent, an anti-aging agent, an ionic surfactant, a toughening agent, a coupling agent, polyethylene wax, propylene glycol alginate, ammonium persulfate and glycerol monostearate, so that the food packaging bag film has good tear resistance and also has good antibacterial, mildew-resistant, insect-resistant and anti-aging properties.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

FIG. 1 is a flow chart of a method of making a tear resistant food packaging bag film according to an embodiment of the present invention.

Detailed Description

For further explanation of the various embodiments, the drawings which form a part of the disclosure and which are incorporated in and constitute a part of this specification, illustrate embodiments and, together with the description, serve to explain the principles of operation of the embodiments, and to enable others of ordinary skill in the art to understand the various embodiments and advantages of the invention, and, by reference to these figures, reference is made to the accompanying drawings, which are not to scale and wherein like reference numerals generally refer to like elements.

According to an embodiment of the present invention, a tear resistant food packaging bag film is provided.

According to the tear-resistant food packaging bag film disclosed by the embodiment of the invention, the tear-resistant food packaging bag film is prepared from the following raw materials in parts by weight:

45-65 parts of linear high-density polyethylene, 15-25 parts of polybutadiene rubber, 10-15 parts of polypropylene glycol, 7-15 parts of cellulose acetate, 2-3 parts of bamboo charcoal fiber particles, 5-12 parts of bacteriostatic agent, 2-4 parts of anti-aging agent, 2-3 parts of ionic surfactant, 2-3 parts of toughening agent, 1-2 parts of coupling agent, 2-3 parts of polyethylene wax, 1-2 parts of propylene glycol alginate, 1-3 parts of ammonium persulfate and 1-2 parts of glycerol monostearate.