CN109677766B - High-strength eight-edge-sealed feed packaging bag and preparation method thereof - Google Patents

High-strength eight-edge-sealed feed packaging bag and preparation method thereof Download PDF

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Publication number
CN109677766B
CN109677766B CN201811552505.3A CN201811552505A CN109677766B CN 109677766 B CN109677766 B CN 109677766B CN 201811552505 A CN201811552505 A CN 201811552505A CN 109677766 B CN109677766 B CN 109677766B
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layer
heat
stirring
sealing
outer side
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CN109677766A (en
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李志勇
潘宣洲
乐友东
谢逸涛
熊国珠
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Guangdong baojiali New Material Co.,Ltd.
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Guangdong Baojiali Green Printing Co ltd
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D31/00—Bags or like containers made of paper and having structural provision for thickness of contents
    • B65D31/02—Bags or like containers made of paper and having structural provision for thickness of contents with laminated walls
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
    • B29D22/00—Producing hollow articles
    • B29D22/003—Containers for packaging, storing or transporting, e.g. bottles, jars, cans, barrels, tanks
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D33/00—Details of, or accessories for, sacks or bags
    • B65D33/16—End- or aperture-closing arrangements or devices
    • B65D33/25—Riveting; Dovetailing; Screwing; using press buttons or slide fasteners
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D81/00—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents
    • B65D81/38—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents with thermal insulation
    • B65D81/3888—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents with thermal insulation wrappers or flexible containers, e.g. pouches, bags
    • B65D81/3897—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents with thermal insulation wrappers or flexible containers, e.g. pouches, bags formed of different materials, e.g. laminated or foam filling between walls

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Packages (AREA)

Abstract

The invention provides a high-strength eight-edge-sealed feed packaging bag and a preparation method thereof, wherein the high-strength eight-edge-sealed feed packaging bag comprises a bottom surface, a first side surface and a second side surface, wherein the first side surface is symmetrically arranged on the front side and the rear side above the bottom surface, the second side surface is symmetrically arranged on the left side and the right side above the bottom surface, inward side edge folding lines are arranged on the second side surface, bottom surface folding lines perpendicular to the side edge folding lines are arranged on the bottom surface, a sealing zipper is embedded between the symmetrically arranged first side surfaces, the bottom surface, the first side surface and the second side surface are identical in structure, and the bottom surface comprises a bottom surface base layer, a heat; the strength of the manufactured packaging bag can be effectively improved by forming the reinforcing layer by the high-strength molecular material, the manufactured packaging bag is not easy to damage and crack when carrying and transporting feeds with heavier mass, the storage life of the feeds in the packaging bag can be prolonged, the sealing performance is good, and the situations of moisture, air leakage and the like are not easy to occur.

Description

High-strength eight-edge-sealed feed packaging bag and preparation method thereof
Technical Field
The invention relates to the field of packaging bag manufacturing, in particular to a high-strength eight-edge-sealed feed packaging bag and a preparation method thereof.
Background
Present fodder strap is most of for trilateral package bag of tradition, this kind of inner space is less, and when the wrapping bag is not splendid attire by packing article, also can not fold into the thin slice state with the wrapping bag, do not utilize and accomodate, the fodder requires highly to storage environment in the storage process simultaneously, need avoid sunshine to penetrate directly when the fodder is stored, still need keep temperature and humidity invariable, temperature variation is big also leads to the fodder to deteriorate easily round the clock, this is just higher to waterproof nature and the sealed heat insulating nature requirement that is used for storing the wrapping bag for the fodder, the fodder wrapping bag is used for the splendid attire fodder often of splendid attire quality great simultaneously, to avoid the cracked condition to appear in this transport of fodder wrapping bag and the transportation, this just leads to the intensity to. Therefore, the invention provides a high-strength eight-edge-sealed feed packaging bag and a preparation method thereof, and aims to overcome the defects in the prior art.
Disclosure of Invention
Aiming at the problems, the strength of the manufactured packaging bag can be effectively improved by forming the reinforcing layer by the high-strength molecular material, the manufactured packaging bag is not easy to damage and crack when carrying and transporting feeds with heavier quality, meanwhile, the storage life of the feeds in the packaging bag can be prolonged, the sealing performance is good, and the situations of moisture, air leakage and the like are not easy to occur.
The invention provides a high-strength eight-edge sealed feed packaging bag, which comprises a bottom surface, a first side surface and a second side surface, the front side and the rear side above the bottom surface are symmetrically provided with a first side surface, the left side and the right side above the bottom surface are symmetrically provided with a second side surface, the second side face is provided with an inward side edge folding line, the bottom face is provided with a bottom face folding line which is perpendicular to the side edge folding line, a sealing zipper is embedded between the first side surfaces which are symmetrically arranged, the bottom surface, the first side surfaces and the second side surfaces have the same structure, the bottom surface comprises a bottom surface base layer, a heat preservation layer, a reinforcing layer, an adhesive layer, a waterproof layer, a frosting layer and a heat-sealing film layer, the outer side of the base layer is provided with a heat-insulating layer, the outer side of the heat-insulating layer is provided with a reinforcing layer, the outer side of the reinforcing layer is provided with an adhesive layer, the bonding layer outside is equipped with the waterproof layer, the waterproof layer outside is equipped with the dull polish layer, the inboard of basic unit and dull polish layer outside all are equipped with the heat seal rete.
The further improvement lies in that: the first side both sides all are equipped with the bellying, second side both sides are equipped with the interior concave part with bellying looks adaptation.
The further improvement lies in that: first sealing stripes are arranged on the periphery above the bottom surface, and second sealing stripes matched with the first sealing stripes are arranged below the inner sides of the first side surface and the second side surface.
The further improvement lies in that: the length of the sealing zipper is less than that of the first side surface.
The preparation method of the high-strength eight-edge-sealed feed packaging bag comprises the following steps:
the method comprises the following steps: preparation of the base layer
The method comprises the following steps of cooking, washing, bleaching, screening, concentrating, pulping, squeezing and drying raw wood pulp, bark, hemp, straw, vinyl resin, reinforcing filler and lime water according to the proportion of 10:1:2:1:8:4:20-12:1.2:2.5:1.4:10:6:25 to prepare a base layer;
step two: preparing the heat-insulating layer
Mixing, dissolving, refining, granulating and blow-molding polystyrene resin, polyvinyl chloride, polyethylene, polypropylene and xylene to prepare a heat-insulating film, heating the heat-insulating film and coating the heat-insulating film on the outer side of a base layer to form a heat-insulating layer;
step three: preparing the reinforcing layer
Heating, mixing, cooling and concentrating acrylonitrile-butadiene-styrene copolymer resin, acrylate emulsion, organic silicon modified polyacrylate and ethyl acetate according to the mass ratio of 5:1:1:2-7:2:1.5:3 to prepare a coating, coating the coating on the outer side of the heat-insulating layer, and performing hot-pressing treatment to form a reinforcing layer on the outer side of the heat-insulating layer;
step four: preparation of the adhesive layer
Preparing an aliphatic anion high-solid polyurethane dispersion and a water dispersible isocyanate curing agent into an adhesive according to the proportion of 8.5:1.5 or 9:1, coating the adhesive on the outer side of the reinforcing layer to form an adhesive layer, drying after coating, and performing hot-press compounding treatment after drying to combine the adhesive layer and the reinforcing layer;
step five; preparation of the Water-repellent layer
Mixing polyester fiber, polyester resin, an initiator, an accelerator, a filler, a thixotropic agent and vinyl acetate, crystallizing, drying, granulating and blow molding to prepare a waterproof film, and then attaching the waterproof film to the outer side of the bonding layer by adopting a hot pressing process to form a waterproof layer;
step six: preparation of the frosted layer
Grinding mica sheets, titanium dioxide, quicklime, magnesium oxide and barium oxide to prepare mixed powder, mixing the mixed powder with polyethylene terephthalate, stirring and concentrating to prepare frosted paint, and coating the frosted paint on the outer side of the waterproof layer to form a frosted layer;
step seven: preparation of Heat-seal film layer
Heating, mixing and stirring the copolymerized propylene, the ethylene acrylic acid copolymer and the vinyl resin according to the proportion of 5:1:4, granulating and blow-molding to prepare a heat-sealing film, and respectively bonding the heat-sealing film on the inner side of the base layer and the outer side of the frosting layer to form a heat-sealing film layer;
step eight: adhesive bottom, first side and second side
Adhering the prepared first side surface to the front side and the rear side of the bottom surface by adopting an adhesive, controlling a second sealing stripe below the inner side of the first side surface to be mutually closed and adhered with a first sealing stripe of the bottom surface, adhering the second side surface to the left side and the right side of the bottom surface by adopting the adhesive, controlling the second sealing stripe below the inner side of the second side surface to be mutually closed and adhered with the first sealing stripe of the bottom surface, adhering and hot-pressing the first side surface and the second side surface by adopting the adhesive, and simultaneously controlling the concave part of the second side surface to be clamped and adhered with the convex part of the first side surface;
step nine: installing sealing zipper
And bonding the sealing zipper in the middle of the symmetrically arranged first side surfaces by adopting a bonding hot-pressing process.
The further improvement lies in that: in the second step, the polystyrene resin and the dimethylbenzene are heated in a stirring kettle, the temperature in the stirring kettle is raised to 65-75 ℃, the polystyrene resin and the dimethylbenzene are mixed and stirred for 20-30 minutes, then the polyvinyl chloride, the polyethylene and the polypropylene are sequentially added into the stirring kettle to be stirred and refined for 15-20 minutes to obtain a mixture, the mixture is introduced into a granulator to be granulated to obtain heat-insulating material particles, finally the heat-insulating material particles are introduced into a blow molding machine to be subjected to blow molding treatment, the temperature of the blow molding treatment is controlled to be 85-100 ℃, a heat-insulating film is prepared, the heat-insulating film is heated to 110 ℃ and coated on the outer side of the base layer, and a heat-insulating layer is formed.
The further improvement lies in that: in the third step, acrylonitrile-butadiene-styrene copolymer resin, organic silicon modified polyacrylate and ethyl acetate are added into a stirring container to be heated to 75-90 ℃, then stirring for 30 minutes, then reducing the temperature in the stirring container to 40-45 ℃, adding the acrylic ester emulsion into the stirring container, mixing for 1-1.5 hours, preparing a mixed solution, wherein the mass ratio of the acrylonitrile-butadiene-styrene copolymer resin to the acrylate emulsion to the organic silicon modified polyacrylate to the ethyl acetate is 5:1:1:2-7:2:1.5:3, and then cooling the mixed solution to 30 ℃ for concentration treatment to prepare a coating, coating the coating on the outer side of the heat-insulating layer, and performing hot-pressing treatment for 5-8 minutes to form a reinforcing layer on the outer side of the heat-insulating layer.
The further improvement lies in that: in the fourth step, the drying temperature is controlled to be 35-42 ℃, and the drying time is 6-10 minutes.
The further improvement lies in that: and the filler in the fifth step is silicon dioxide, calcium carbonate, barium sulfate and kaolin, and the accelerator is one of N, N-dimethylaniline or cobalt salt.
The further improvement lies in that: adding polyester fiber, polyester resin and vinyl acetate into a reaction kettle, raising the temperature in the reaction kettle to 65 ℃, stirring for 30-40 minutes, controlling the stirring speed in the reaction kettle to be 350-400 rpm, sequentially adding an initiator, an accelerator, silicon dioxide, calcium carbonate, barium sulfate, kaolin and a thixotropic agent into the reaction kettle, mixing for 20-25 minutes to obtain a mixture, crystallizing the mixture, drying for 30 minutes in a drying box at 95-110 ℃, pouring the mixture into a granulator, granulating, introducing the prepared particles into a blow molding machine, performing blow molding to prepare a waterproof film, and finally attaching the waterproof film to the outer side of the bonding layer by adopting a hot pressing process to form the waterproof layer.
The invention has the beneficial effects that: the strength of the prepared packaging bag can be effectively improved by forming the reinforcing layer by using high-strength molecular material acrylonitrile-butadiene-styrene copolymer resin, acrylate emulsion, organic silicon modified polyacrylate and ethyl acetate, the prepared packaging bag is not easy to break and burst when carrying and transporting feeds with heavier mass, meanwhile, the shelf life of the feed in the packaging bag can be prolonged, the sealing performance is good, the situations of moisture, air leakage and the like are not easy to occur, the constant temperature in the packaging bag can be improved through the heat preservation layer, the feed in the packaging bag is prevented from being rotten and deteriorated due to the large influence of temperature difference change, the quality of feed products is prevented from being influenced, the waterproof layer is communicated, the moisture can be effectively prevented from entering the packaging bag to damp the feed, the relatively stable temperature and water balance environment is improved for feed storage, the frosting layer can play a shading effect, and feed decomposition caused by direct irradiation of strong light on the feed is avoided.
Drawings
Fig. 1 is a perspective view of the present invention.
FIG. 2 is a cross-sectional view of the bottom, first side and second side of the present invention.
FIG. 3 is an enlarged view of a portion of FIG. 1 according to the present invention.
FIG. 4 is an enlarged view of a portion of FIG. 1 at B according to the present invention.
Wherein: 1-bottom surface, 2-first side surface, 3-second side surface, 4-side edge folding line, 5-bottom surface folding line, 6-sealing zipper, 7-base layer, 8-heat preservation layer, 9-reinforcing layer, 10-bonding layer, 11-waterproof layer, 12-frosting layer, 13-heat sealing film layer, 14-convex part, 15-concave part, 16-first sealing stripe and 17-second sealing stripe.
Detailed Description
In order to make the technical means, objectives and functions of the invention easy to understand, the invention will be further described with reference to the following embodiments.
Example one
According to the drawings 1, 2, 3 and 4, the embodiment provides a high-strength eight-edge-sealed feed packaging bag, which comprises a bottom surface 1, a first side surface 2 and a second side surface 3, wherein the first side surface 2 is symmetrically arranged on the front side and the back side above the bottom surface 1, the second side surface 3 is symmetrically arranged on the left side and the right side above the bottom surface 1, inward side folding lines 4 are arranged on the second side surface 2, bottom folding lines 5 perpendicular to the side folding lines 4 are arranged on the bottom surface 1, a sealing zipper 6 is embedded between the first side surfaces 2 which are symmetrically arranged, the bottom surface 1, the first side surface 2 and the second side surface 3 are identical in structure, the bottom surface 1 comprises a bottom base layer 7, a heat preservation layer 8, a reinforcing layer 9, an adhesive layer 10, a waterproof layer 11, a frosting layer 12 and a heat-sealing film layer 13, the heat preservation layer, the reinforced layer 9 outside is equipped with bond line 10, the bond line 10 outside is equipped with waterproof layer 11, the waterproof layer 11 outside is equipped with dull polish layer 12, the inboard of basic unit 7 and the dull polish layer 12 outside all are equipped with heat seal membrane layer 13.
Both sides of the first side surface 3 are provided with convex parts 14, and both sides of the second side surface 3 are provided with concave parts 15 matched with the convex parts 14.
First sealing stripes 16 are arranged on the periphery above the bottom surface 1, and second sealing stripes 17 matched with the first sealing stripes 16 are arranged below the inner sides of the first side surface 2 and the second side surface 3.
The length of the sealing zipper 6 is less than that of the first side surface 2.
The preparation method of the high-strength eight-edge-sealed feed packaging bag comprises the following steps:
the method comprises the following steps: preparation of the base layer 7
Cooking, washing, bleaching, screening, concentrating, pulping, squeezing and drying raw wood pulp, bark, hemp, straw, vinyl resin, reinforcing filler and lime water according to the proportion of 11:1:2:1.2:8:5:22 to prepare a base layer 7;
step two: preparation of the insulating layer 8
Heating polystyrene resin and dimethylbenzene in a stirring kettle, raising the temperature in the stirring kettle to 65-75 ℃, mixing and stirring for 25 minutes, then sequentially adding polyvinyl chloride, polyethylene and polypropylene into the stirring kettle, stirring and refining for 18 minutes to obtain a mixture, then introducing the mixture into a granulator, granulating to obtain heat-insulating material particles, finally introducing the heat-insulating material particles into a blow molding machine, carrying out blow molding treatment, controlling the temperature of the blow molding treatment to be 90 ℃, preparing a heat-insulating film, heating the heat-insulating film to 110 ℃, and coating the heat-insulating film on the outer side of a base layer 7 to form a heat-insulating layer 8;
step three: preparation of the reinforcing layer 9
Adding acrylonitrile-butadiene-styrene copolymer resin, organic silicon modified polyacrylate and ethyl acetate into a stirring container, heating to 80 ℃, stirring for 30 minutes, reducing the temperature in the stirring container to 42 ℃, adding acrylate emulsion into the stirring container, mixing for 1.2 hours to prepare a mixed solution, cooling the mixed solution to 30 ℃ for concentration treatment to prepare a coating, coating the coating on the outer side of a heat insulation layer 8, performing hot pressing for 6 minutes, and forming a reinforcing layer 9 on the outer side of the heat insulation layer 8;
step four: preparation of the adhesive layer 10
Preparing an aliphatic anion high-solid polyurethane dispersion liquid and a water dispersible isocyanate curing agent into an adhesive according to a ratio of 9:1, coating the adhesive on the outer side of a reinforcing layer 9 to form an adhesive layer 10, drying after coating, and performing hot-pressing composite treatment after drying to combine the adhesive layer 10 with the reinforcing layer 9, wherein the drying temperature is controlled to be 38 ℃, and the drying time is 8 minutes;
step five; preparation of the Water-repellent layer 11
Mixing polyester fiber, polyester resin, an initiator, an accelerator, silicon dioxide, calcium carbonate, barium sulfate, kaolin, a thixotropic agent and vinyl acetate, crystallizing, drying, granulating and blow molding to prepare a waterproof film, and then attaching the waterproof film to the outer side of the bonding layer 10 by adopting a hot pressing process to form a waterproof layer 11;
step six: preparation of the frosted layer 12
Firstly, adding polyester fiber, polyester resin and vinyl acetate into a reaction kettle, then raising the temperature in the reaction kettle to 65 ℃ and stirring for 35 minutes, controlling the stirring speed in the reaction kettle to be 380 revolutions per minute, then sequentially adding an initiator, an accelerator, silicon dioxide, calcium carbonate, barium sulfate, kaolin and a thixotropic agent into the reaction kettle to mix for 22 minutes to obtain a mixture, then crystallizing the mixture, then drying for 30 minutes in a drying box at 100 ℃, then pouring the mixture into a granulator to granulate, then introducing the prepared granules into a blow molding machine to blow mold to prepare a waterproof film, and finally attaching the waterproof film to the outer side of an adhesive layer 10 by adopting a hot pressing process to form a waterproof layer 11;
step seven: preparation of the Heat-seal film layer 13
Heating, mixing and stirring the copolymerized propylene, the ethylene acrylic acid copolymer and the vinyl resin according to the proportion of 5:1:4, granulating and blow-molding to prepare a heat-sealing film, and respectively bonding the heat-sealing film on the inner side of the base layer 7 and the outer side of the frosted layer 12 to form a heat-sealing film layer 13;
step eight: adhesive base 1, first side 2 and second side 3
Adhering the prepared first side surface 2 to the front side and the rear side of the bottom surface 1 by adopting an adhesive, controlling a second sealing stripe 17 below the inner side of the first side surface 2 to be mutually closed and adhered with a first sealing stripe 16 of the bottom surface 1, adhering the second side surface 3 to the left side and the right side of the bottom surface 1 by adopting the adhesive, controlling the second sealing stripe 17 below the inner side of the second side surface 3 to be mutually closed and adhered with the first sealing stripe 16 of the bottom surface 1, then carrying out adhesion hot pressing between the first side surface 2 and the second side surface 3 by adopting the adhesive, and simultaneously controlling the inner concave part 15 of the second side surface 3 to be clamped and adhered with the convex part 14 of the first side surface 2;
step nine: installing the sealing slide fastener 6
And bonding the sealing zipper 6 in the middle of the first side surfaces 2 which are symmetrically arranged by adopting a bonding hot-pressing process.
Example two
According to the drawings 1, 2, 3 and 4, the embodiment provides a high-strength eight-edge-sealed feed packaging bag, which comprises a bottom surface 1, a first side surface 2 and a second side surface 3, wherein the first side surface 2 is symmetrically arranged on the front side and the back side above the bottom surface 1, the second side surface 3 is symmetrically arranged on the left side and the right side above the bottom surface 1, inward side folding lines 4 are arranged on the second side surface 2, bottom folding lines 5 perpendicular to the side folding lines 4 are arranged on the bottom surface 1, a sealing zipper 6 is embedded between the first side surfaces 2 which are symmetrically arranged, the bottom surface 1, the first side surface 2 and the second side surface 3 are identical in structure, the bottom surface 1 comprises a bottom base layer 7, a heat preservation layer 8, a reinforcing layer 9, an adhesive layer 10, a waterproof layer 11, a frosting layer 12 and a heat-sealing film layer 13, the heat preservation layer, the reinforced layer 9 outside is equipped with bond line 10, the bond line 10 outside is equipped with waterproof layer 11, the waterproof layer 11 outside is equipped with dull polish layer 12, the inboard of basic unit 7 and the dull polish layer 12 outside all are equipped with heat seal membrane layer 13.
Both sides of the first side surface 3 are provided with convex parts 14, and both sides of the second side surface 3 are provided with concave parts 15 matched with the convex parts 14.
First sealing stripes 16 are arranged on the periphery above the bottom surface 1, and second sealing stripes 17 matched with the first sealing stripes 16 are arranged below the inner sides of the first side surface 2 and the second side surface 3.
The length of the sealing zipper 6 is less than that of the first side surface 2.
The preparation method of the high-strength eight-edge-sealed feed packaging bag comprises the following steps:
the method comprises the following steps: preparation of the base layer 7
Cooking, washing, bleaching, screening, concentrating, pulping, squeezing and drying raw wood pulp, bark, hemp, straw, vinyl resin, reinforcing filler and lime water according to the proportion of 11:1:2:1.2:8:5:22 to prepare a base layer 7;
step two: preparation of the insulating layer 8
Heating polystyrene resin and dimethylbenzene in a stirring kettle, raising the temperature in the stirring kettle to 65-75 ℃, mixing and stirring for 25 minutes, then sequentially adding polyvinyl chloride, polyethylene and polypropylene into the stirring kettle, stirring and refining for 18 minutes to obtain a mixture, then introducing the mixture into a granulator, granulating to obtain heat-insulating material particles, finally introducing the heat-insulating material particles into a blow molding machine, carrying out blow molding treatment, controlling the temperature of the blow molding treatment to be 90 ℃, preparing a heat-insulating film, heating the heat-insulating film to 110 ℃, and coating the heat-insulating film on the outer side of a base layer 7 to form a heat-insulating layer 8;
step three: preparation of the reinforcing layer 9
Adding acrylonitrile-butadiene-styrene copolymer resin, organic silicon modified polyacrylate and ethyl acetate into a stirring container, heating to 80 ℃, stirring for 30 minutes, reducing the temperature in the stirring container to 42 ℃, adding acrylate emulsion into the stirring container, mixing for 1.2 hours to prepare a mixed solution, wherein the mass ratio of the acrylonitrile-butadiene-styrene copolymer resin to the acrylate emulsion to the organic silicon modified polyacrylate to the ethyl acetate is 7:2:1.5:3, cooling the mixed solution to 30 ℃, concentrating to prepare a coating, coating the coating on the outer side of a heat insulation layer 8, performing hot pressing for 6 minutes, and forming a reinforcing layer 9 on the outer side of the heat insulation layer 8;
step four: preparation of the adhesive layer 10
Preparing an aliphatic anion high-solid polyurethane dispersion liquid and a water dispersible isocyanate curing agent into an adhesive according to a ratio of 9:1, coating the adhesive on the outer side of a reinforcing layer 9 to form an adhesive layer 10, drying after coating, and performing hot-pressing composite treatment after drying to combine the adhesive layer 10 with the reinforcing layer 9, wherein the drying temperature is controlled to be 38 ℃, and the drying time is 8 minutes;
step five; preparation of the Water-repellent layer 11
Mixing polyester fiber, polyester resin, an initiator, an accelerator, silicon dioxide, calcium carbonate, barium sulfate, kaolin, a thixotropic agent and vinyl acetate, crystallizing, drying, granulating and blow molding to prepare a waterproof film, and then attaching the waterproof film to the outer side of the bonding layer 10 by adopting a hot pressing process to form a waterproof layer 11;
step six: preparation of the frosted layer 12
Firstly, adding polyester fiber, polyester resin and vinyl acetate into a reaction kettle, then raising the temperature in the reaction kettle to 65 ℃ and stirring for 35 minutes, controlling the stirring speed in the reaction kettle to be 380 revolutions per minute, then sequentially adding an initiator, an accelerator, silicon dioxide, calcium carbonate, barium sulfate, kaolin and a thixotropic agent into the reaction kettle to mix for 22 minutes to obtain a mixture, then crystallizing the mixture, then drying for 30 minutes in a drying box at 100 ℃, then pouring the mixture into a granulator to granulate, then introducing the prepared granules into a blow molding machine to blow mold to prepare a waterproof film, and finally attaching the waterproof film to the outer side of an adhesive layer 10 by adopting a hot pressing process to form a waterproof layer 11;
step seven: preparation of the Heat-seal film layer 13
Heating, mixing and stirring the copolymerized propylene, the ethylene acrylic acid copolymer and the vinyl resin according to the proportion of 5:1:4, granulating and blow-molding to prepare a heat-sealing film, and respectively bonding the heat-sealing film on the inner side of the base layer 7 and the outer side of the frosted layer 12 to form a heat-sealing film layer 13;
step eight: adhesive base 1, first side 2 and second side 3
Adhering the prepared first side surface 2 to the front side and the rear side of the bottom surface 1 by adopting an adhesive, controlling a second sealing stripe 17 below the inner side of the first side surface 2 to be mutually closed and adhered with a first sealing stripe 16 of the bottom surface 1, adhering the second side surface 3 to the left side and the right side of the bottom surface 1 by adopting the adhesive, controlling the second sealing stripe 17 below the inner side of the second side surface 3 to be mutually closed and adhered with the first sealing stripe 16 of the bottom surface 1, then carrying out adhesion hot pressing between the first side surface 2 and the second side surface 3 by adopting the adhesive, and simultaneously controlling the inner concave part 15 of the second side surface 3 to be clamped and adhered with the convex part 14 of the first side surface 2;
step nine: installing the sealing slide fastener 6
And bonding the sealing zipper 6 in the middle of the first side surfaces 2 which are symmetrically arranged by adopting a bonding hot-pressing process.
According to the first embodiment and the second embodiment, the acrylonitrile-butadiene-styrene copolymer resin, the acrylate emulsion, the organic silicon modified polyacrylate and the ethyl acetate are heated, mixed, cooled and concentrated according to the mass ratio of 5:1:1:2-7:2:1.5:3 to form the coating, and the coating is coated on the outer side of the heat-insulating layer 8 to form the reinforcing layer which has the best strength, is not easy to damage and crack, has good sealing performance, and is not easy to damp, leak and the like.
The reinforced layer 9 is formed by high-strength molecular material acrylonitrile-butadiene-styrene copolymer resin and acrylate emulsion, organic silicon modified polyacrylate and ethyl acetate, so that the strength of the manufactured packaging bag can be effectively improved, the manufactured packaging bag is not easy to damage and crack when carrying and transporting heavier feed, meanwhile, the storage life of the feed in the packaging bag can be improved, the sealing performance is good, the conditions of moisture, air leakage and the like are not easy to occur, the constancy of the temperature in the packaging bag can be improved through the heat preservation layer 8, the feed in the packaging bag is prevented from being rotted and deteriorated due to larger change of temperature difference, the quality of feed products is prevented from being influenced, the moisture can be effectively prevented from entering the packaging bag through the waterproof layer 11 to cause the feed to be humidified, the relatively stable temperature and water balance environment is improved for the feed storage, the shading effect can be achieved, prevent the feed from being decomposed due to direct irradiation of strong light.
The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims (6)

1. Eight edge sealings of high strength fodder wrapping bag, its characterized in that: the heat-insulating floor comprises a bottom surface (1), a first side surface (2) and a second side surface (3), wherein the first side surface (2) is symmetrically arranged on the front side and the back side above the bottom surface (1), the second side surface (3) is symmetrically arranged on the left side and the right side above the bottom surface (1), inward side folding lines (4) are arranged on the second side surface (2), bottom surface folding lines (5) perpendicular to the side folding lines (4) are arranged on the bottom surface (1), sealing zippers (6) are embedded between the symmetrically arranged first side surfaces (2), the bottom surface (1), the first side surface (2) and the second side surface (3) are identical in structure, the bottom surface (1) comprises a bottom surface base layer (7), a heat-insulating layer (8), a reinforcing layer (9), an adhesive layer (10), a waterproof layer (11), a frosting layer (12) and a heat-sealing film layer (13), the, a reinforcing layer (9) is arranged on the outer side of the heat-insulating layer (8), an adhesive layer (10) is arranged on the outer side of the reinforcing layer (9), a waterproof layer (11) is arranged on the outer side of the adhesive layer (10), a frosting layer (12) is arranged on the outer side of the waterproof layer (11), and heat-seal film layers (13) are arranged on the inner side of the base layer (7) and the outer side of the frosting layer (12);
the two sides of the first side surface (2) are both provided with a convex part (14), and the two sides of the second side surface (3) are both provided with an inner concave part (15) matched with the convex part (14);
the bottom surface (1) top is equipped with all around first sealed stripe (16), first side (2) and second side (3) inboard below is equipped with second sealed stripe (17) with first sealed stripe (16) looks adaptation.
2. The high strength eight-edge sealed feed package of claim 1, wherein: the length of the sealing zipper (6) is less than that of the first side surface (2).
3. The preparation method of the high-strength eight-edge sealed feed packaging bag is characterized in that: the method comprises the following steps:
the method comprises the following steps: preparation of the base layer (7)
Cooking, washing, bleaching, screening, concentrating, pulping, squeezing and drying raw wood pulp, bark, hemp, straw, vinyl resin, reinforcing filler and lime water according to the proportion of 10:1:2:1:8:4:20-12:1.2:2.5:1.4:10:6:25 to prepare a base layer (7);
step two: preparation of heat preservation layer (8)
Mixing, dissolving, refining, granulating and blow-molding polystyrene resin, polyvinyl chloride, polyethylene, polypropylene and xylene to prepare a heat-insulating film, heating the heat-insulating film and coating the heat-insulating film on the outer side of a base layer (7) to form a heat-insulating layer (8);
heating polystyrene resin and dimethylbenzene in a stirring kettle, raising the temperature in the stirring kettle to 65-75 ℃, mixing and stirring for 20-30 minutes, then sequentially adding polyvinyl chloride, polyethylene and polypropylene into the stirring kettle, stirring and refining for 15-20 minutes to obtain a mixture, then introducing the mixture into a granulator, granulating to obtain heat-insulating material particles, finally introducing the heat-insulating material particles into a blow molding machine, performing blow molding treatment, controlling the temperature of the blow molding treatment to be 85-100 ℃, preparing a heat-insulating film, heating the heat-insulating film to 110 ℃, and coating the heat-insulating film on the outer side of a base layer (7) to form a heat-insulating layer (8);
step three: preparation of the reinforcing layer (9)
Heating, mixing, cooling and concentrating acrylonitrile-butadiene-styrene copolymer resin, acrylate emulsion, organic silicon modified polyacrylate and ethyl acetate according to the mass ratio of 5:1:1:2-7:2:1.5:3 to prepare a coating, coating the coating on the outer side of the heat-insulating layer (8), and performing hot-pressing treatment to form a reinforcing layer (9) on the outer side of the heat-insulating layer (8);
adding acrylonitrile-butadiene-styrene copolymer resin, organic silicon modified polyacrylate and ethyl acetate into a stirring container, heating to 75-90 ℃, stirring for 30 minutes, reducing the temperature in the stirring container to 40-45 ℃, adding acrylate emulsion into the stirring container, mixing for 1-1.5 hours to prepare a mixed solution, wherein the mass ratio of the acrylonitrile-butadiene-styrene copolymer resin, the acrylate emulsion, the organic silicon modified polyacrylate and the ethyl acetate is 5:1:1:2-7:2:1.5:3, cooling the mixed solution to 30 ℃, concentrating to prepare a coating, coating the coating on the outer side of a heat-insulating layer 8, and performing hot-pressing for 5-8 minutes, a reinforcing layer 9 is formed outside the heat preservation layer 8;
step four: preparation of the adhesive layer (10)
Preparing an aliphatic anion high-solid polyurethane dispersion and a water dispersible isocyanate curing agent into an adhesive according to the proportion of 8.5:1.5 or 9:1, coating the adhesive on the outer side of a reinforcing layer (9) to form an adhesive layer (10), drying after coating, and performing hot-press compounding treatment after drying to combine the adhesive layer (10) with the reinforcing layer (9);
step five; preparation of waterproof layer (11)
Mixing, crystallizing, drying, granulating and blow-molding polyester fibers, polyester resin, an initiator, an accelerator, a filler, a thixotropic agent and vinyl acetate to prepare a waterproof film, and then attaching the waterproof film to the outer side of the bonding layer (10) by adopting a hot-pressing process to form a waterproof layer (11);
step six: preparation of frosted layer (12)
Crushing and grinding mica sheets, titanium dioxide, quicklime, magnesium oxide and barium oxide to prepare mixed powder, mixing, stirring and concentrating the mixed powder and polyethylene terephthalate to prepare frosted paint, and coating the frosted paint on the outer side of the waterproof layer (11) to form a frosted layer (12);
step seven: preparation of Heat-seal film layer (13)
Heating, mixing and stirring the copolymerized propylene, the ethylene acrylic acid copolymer and the vinyl resin according to the proportion of 5:1:4, granulating and blow-molding to prepare a heat-sealing film, and respectively bonding the heat-sealing film on the inner side of the base layer (7) and the outer side of the frosted layer (12) to form a heat-sealing film layer (13);
step eight: a bonding base (1), a first side (2) and a second side (3)
Adhering the prepared first side surface (2) to the front side and the rear side of the bottom surface (1) by adopting an adhesive, controlling a second sealing stripe (17) below the inner side of the first side surface (2) to be mutually closed and adhered with a first sealing stripe (16) of the bottom surface (1), adhering the second side surface (3) to the left side and the right side of the bottom surface (1) by adopting the adhesive, controlling the second sealing stripe (17) below the inner side of the second side surface (3) to be mutually closed and adhered with the first sealing stripe (16) of the bottom surface (1), performing adhesion hot pressing between the first side surface (2) and the second side surface (3) by adopting the adhesive, and simultaneously controlling the concave part (15) of the second side surface (3) to be clamped and adhered with the convex part (14) of the first side surface (2);
step nine: installation sealing zipper (6)
And bonding the sealing zipper (6) in the middle of the first side surfaces (2) which are symmetrically arranged by adopting a bonding hot-pressing process.
4. The method for preparing the high-strength eight-edge-sealed feed packaging bag according to claim 3, wherein the method comprises the following steps: in the fourth step, the drying temperature is controlled to be 35-42 ℃, and the drying time is 6-10 minutes.
5. The method for preparing the high-strength eight-edge-sealed feed packaging bag according to claim 3, wherein the method comprises the following steps: and the filler in the fifth step is silicon dioxide, calcium carbonate, barium sulfate and kaolin, and the accelerator is one of N, N-dimethylaniline or cobalt salt.
6. The method for preparing the high-strength eight-edge-sealed feed packaging bag according to claim 5, wherein the method comprises the following steps: adding polyester fiber, polyester resin and vinyl acetate into a reaction kettle, raising the temperature in the reaction kettle to 65 ℃, stirring for 30-40 minutes, controlling the stirring speed in the reaction kettle to be 350-400 rpm, sequentially adding an initiator, an accelerator, silicon dioxide, calcium carbonate, barium sulfate, kaolin and a thixotropic agent into the reaction kettle, mixing for 20-25 minutes to obtain a mixture, crystallizing the mixture, drying for 30 minutes in a drying box at 95-110 ℃, pouring the mixture into a granulator, granulating, introducing the prepared granules into a blow molding machine, performing blow molding to prepare a waterproof film, and finally attaching the waterproof film to the outer side of the bonding layer (10) by adopting a hot pressing process to form the waterproof layer (11).
CN201811552505.3A 2018-12-18 2018-12-18 High-strength eight-edge-sealed feed packaging bag and preparation method thereof Active CN109677766B (en)

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DE2406703A1 (en) * 1974-02-13 1975-08-28 Rappold & Co Gmbh Hermann Pipe valve, esp. for gas ducts on blast furnaces - contg. rotary pipe section on spherical seat with multiple seals
CN203255472U (en) * 2013-05-13 2013-10-30 浙江长海包装集团有限公司 Water-proof paper-plastic package bag
CN103600527A (en) * 2013-10-29 2014-02-26 昆山好利达包装有限公司 High-barrier packaging material
CN206984708U (en) * 2017-06-19 2018-02-09 东莞市华源包装股份有限公司 A kind of new eight side seal packaging bag
CN107652568A (en) * 2017-09-29 2018-02-02 安徽同利塑胶彩印有限公司 A kind of high-strength abrasion-proof packaging material and preparation method thereof
CN207434095U (en) * 2017-10-16 2018-06-01 南京赛德包装有限公司 A kind of Anti-counterfeit packing bag
CN208053966U (en) * 2018-03-06 2018-11-06 刘新明 A kind of wedge shape eight banding explosion-proof bag of organ

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