CN112978006A - PP (polypropylene) coated paper container capable of being used for microwave and processing technology thereof - Google Patents

PP (polypropylene) coated paper container capable of being used for microwave and processing technology thereof Download PDF

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Publication number
CN112978006A
CN112978006A CN202110381331.4A CN202110381331A CN112978006A CN 112978006 A CN112978006 A CN 112978006A CN 202110381331 A CN202110381331 A CN 202110381331A CN 112978006 A CN112978006 A CN 112978006A
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CN
China
Prior art keywords
container
paper
wall
container wall
printing
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Pending
Application number
CN202110381331.4A
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Chinese (zh)
Inventor
金玉梅
崔文
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Shanghai Xinxiao Environmental Protection Technology Co ltd
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Shanghai Xinxiao Environmental Protection Technology Co ltd
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Priority to CN202110381331.4A priority Critical patent/CN112978006A/en
Publication of CN112978006A publication Critical patent/CN112978006A/en
Pending legal-status Critical Current

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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
    • B65D3/00—Rigid or semi-rigid containers having bodies or peripheral walls of curved or partially-curved cross-section made by winding or bending paper without folding along defined lines
    • B65D3/02—Rigid or semi-rigid containers having bodies or peripheral walls of curved or partially-curved cross-section made by winding or bending paper without folding along defined lines characterised by shape
    • B65D3/06—Rigid or semi-rigid containers having bodies or peripheral walls of curved or partially-curved cross-section made by winding or bending paper without folding along defined lines characterised by shape essentially conical or frusto-conical
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B50/00—Making rigid or semi-rigid containers, e.g. boxes or cartons
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B50/00—Making rigid or semi-rigid containers, e.g. boxes or cartons
    • B31B50/14—Cutting, e.g. perforating, punching, slitting or trimming
    • B31B50/20—Cutting sheets or blanks
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B50/00—Making rigid or semi-rigid containers, e.g. boxes or cartons
    • B31B50/60—Uniting opposed surfaces or edges; Taping
    • B31B50/64—Uniting opposed surfaces or edges; Taping by applying heat or pressure, e.g. by welding
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B50/00—Making rigid or semi-rigid containers, e.g. boxes or cartons
    • B31B50/74—Auxiliary operations
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B50/00—Making rigid or semi-rigid containers, e.g. boxes or cartons
    • B31B50/74—Auxiliary operations
    • B31B50/741—Moistening; Drying; Cooling; Heating; Sterilizing
    • 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
    • B65D3/00—Rigid or semi-rigid containers having bodies or peripheral walls of curved or partially-curved cross-section made by winding or bending paper without folding along defined lines
    • B65D3/28—Other details of walls
    • 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
    • B65D77/00—Packages formed by enclosing articles or materials in preformed containers, e.g. boxes, cartons, sacks or bags
    • B65D77/10—Container closures formed after filling
    • B65D77/20—Container closures formed after filling by applying separate lids or covers, i.e. flexible membrane or foil-like covers
    • B65D77/2024—Container closures formed after filling by applying separate lids or covers, i.e. flexible membrane or foil-like covers the cover being welded or adhered to the container
    • B65D77/2068—Means for reclosing the cover after its first opening
    • B65D77/2072—Mechanical means
    • 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
    • B65D81/34—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 for packaging foodstuffs or other articles intended to be cooked or heated within the package
    • B65D81/3446—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 for packaging foodstuffs or other articles intended to be cooked or heated within the package specially adapted to be heated by microwaves
    • B65D81/3453—Rigid containers, e.g. trays, bottles, boxes, cups

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Food Science & Technology (AREA)
  • Package Specialized In Special Use (AREA)

Abstract

The paper container comprises a container wall and a container bottom, wherein the container bottom is connected to the lower side of the container wall, a container opening is formed in the upper end of the container wall, PP film layers are arranged on the inner walls of the container wall and the container bottom, the container wall and the container bottom are bonded through the PP film layers, a PP reinforcing layer is further arranged at the inner connection position of the container wall and the container bottom, and a first curling edge is arranged at the opening at the top end of the container wall; the processing technology comprises the following steps: carrying out film spraying and die cutting on base paper PP to obtain container wall-shaped paper and a container bottom, heating the edge of the container wall-shaped paper, winding the container wall-shaped paper to obtain a container wall, filling the container wall into the container bottom, and heating and bonding to obtain a primary formed container; spraying a PP film spraying liquid into the inner cavity of the primary forming container and heating to form a PP reinforcing layer; and (5) curling the top of the container wall to obtain the PP laminating paper container. The paper container has the effect of facilitating microwave heating; the processing technology has the effect of improving the processing efficiency and quality.

Description

PP (polypropylene) coated paper container capable of being used for microwave and processing technology thereof
Technical Field
The application relates to the field of paper containers, in particular to a PP (polypropylene) laminated paper container capable of being used for microwaves and a processing technology thereof.
Background
Paper containers such as paper cups and paper bowls are very common holding tools in people's lives, and are used for holding water, beverages and various edible liquids or foods particularly in food packaging. However, the heat insulation and heat resistance of the current common single-layer paper container have certain difference with the use requirements of people, which brings inconvenience to the daily use of people.
The application number is 201621179515.3's chinese utility model patent discloses a high heat-seal nature high strength paper container, including cup and bottom of cup, the cup is connected with the bottom of cup, by outer rete, insulating layer, barrier layer and interior rete of having set gradually in to outward, outer rete bonds by fan-shaped paper both ends and constitutes, the insulating layer comprises many equidistance arriss, and the centre of arris is hollow, the barrier layer is the layer of aluminizing, interior rete bonds by a complete fan-shaped ivory board both ends and constitutes, fan-shaped ivory board inboard is provided with the PE and drenches the rete.
In view of the above-mentioned related technologies, the inventor believes that the PE coating layer arranged on the inner side of the fan-shaped ivory board has a low melting point, and the PE coating layer will melt when heated by a microwave oven, which causes the stiffness and barrier property of the paper container to decrease, and has a defect that microwave heating is inconvenient.
Disclosure of Invention
In order to facilitate the microwave heating of the paper container, the application provides a PP drenches membrane paper container for microwave and processing technology thereof.
In a first aspect, the application provides a PP drenches membrane paper container for microwave, adopts following technical scheme:
the application provides a but PP drenches membrane paper container for microwave adopts following technical scheme:
the utility model provides a but PP drenches membrane paper container for microwave, includes at the bottom of container wall and the container, connect at the bottom of the container wall downside, container wall upper end forms the container opening, all be provided with PP on the inner wall at the bottom of container wall and the container and drench the rete, the container wall is formed by the scraps of paper bonding, just all pass through between container wall and the bottom of container wall and the container PP drenches the rete and bonds, the internal connection department at the bottom of container wall and the container still is provided with the PP enhancement layer, container wall top end opening part is provided with first turn-up.
By adopting the technical scheme, the designed PP laminating layer reduces the possibility that the laminating layer of the paper container is melted and damaged in the microwave heating process by utilizing the characteristic that the melting point of the PP laminating layer is higher than the temperature required by food heating, namely, the PP laminating layer can still keep better isolation and strength in the microwave heating process; the container wall and the adhesion between the container wall and the container bottom are all adhered through the PP film coating layer, so that the adhesion performance can be still kept under the high-temperature condition of microwave heating, and the paper container can still keep stable structure under the microwave heating environment; the structure of the bonding part at the bottom of the container wall and the container is reinforced by the PP reinforcing layer, so that the defect that the bonding part at the bottom of the container wall and the container is easy to leak is overcome, and the whole paper container has good isolation performance. The designed PP film coating layer and the PP reinforcing layer reduce the infiltration of moisture in food to the container wall and the container bottom, so that the paper container can keep stiffness and isolation performance even in a microwave heating high-temperature environment, the paper container is convenient to be heated by microwaves, and the practicability of the paper container is improved; the first curling edge is designed to strengthen the structural strength of the opening of the container, so that the paper container after microwave heating is moved by applying force to the first curling edge, the possibility of deformation of the paper container when the force is applied to the paper container is reduced, and the paper container is conveniently heated by microwaves.
Optionally, one end of the container wall close to the container bottom is provided with a thickened wall, and the thickened wall is thicker than the container wall.
By adopting the technical scheme, the strength of the bottom of the paper container is enhanced by the designed thickened wall, so that the heated paper container can be supported from the bottom when moving, and does not need to be in contact with the container wall with higher temperature; in addition, force can be applied to the first curling edge and the thickened wall simultaneously to hold the paper container for a long time, so that the paper container can be conveniently taken and placed during microwave heating and can be conveniently used after heating is finished.
Optionally, a printing layer is arranged on the outer side of the container wall, a PP laminating layer is also arranged on the outer wall of the printing layer, and a second turned edge is arranged at the bottom of the printing layer.
By adopting the technical scheme, the printing layer is blocked by the PP film coating layer, so that the movement loss of dye molecules on the printing layer after microwave heating is limited, the contact between a user and the dye molecules is reduced, the use safety of the paper container is improved, and gloss oil on the printing layer can be replaced, so that the gloss oil does not need to be sprayed for brightening after the printing of the printing layer is finished, and the processing is convenient; meanwhile, the PP laminating layer can also perform waterproof protection on the printing layer so as to keep the stiffness of the paper container and reduce the influence and limitation of the external environment on the use of the paper container; and the second bead is designed to further strengthen the bottom of the paper container.
Optionally, the distance from the second bead to the bottom end of the receptacle wall is less than the distance from the bottom of the receptacle to the bottom end of the receptacle wall.
Through adopting above-mentioned technical scheme for the second turn-up suffers the preparatory measure of erosion and destruction as container wall bottom, in case the container wall bottom receives external moisture and soaks, softens, and the second turn-up can undertake the supporting role to the paper container, is further soaked required time at the bottom of the extension container, promotes the practicality of paper container.
Optionally, be provided with the closing cap subassembly on the printing layer outer wall, the closing cap subassembly is detained including tear strip and dicyclo, the tear strip sets up on printing the layer, and can certainly tear strip one end tears with the printing layer and leaves, the dicyclo is detained and is pasted and establish on printing the layer, just the free end after the tear strip is torn can be walked around the container opening and pass the dicyclo is detained and is fixed.
By adopting the technical scheme, when the paper container containing food is heated by the microwave oven, in order to reduce the dirt in the microwave oven caused by liquid splashing, the paper container is generally covered with the top cover, the top cover is temporarily fixed, the tearing strip is torn during fixing, the scattering strip escapes from the top cover covered on the opening of the container, the free end of the tearing strip penetrates through the double-ring buckle, the tension degree of the tearing strip is adjusted, the top cover is fixed, and the paper container is placed into the microwave oven for heating; the closing cap subassembly of design, simple structure can simply fix the top cap, and fixed top cap can block liquid and splash, also can avoid expanding because of sealing the inside and outside great top cap that arouses of pressure difference of tight paper container in the heating process, and the practicality is strong.
In a second aspect, the application provides a processing technology of a PP laminated paper container for microwave, which adopts the following technical scheme:
a processing technology of a PP laminated paper container capable of being used for microwave comprises the following steps:
the method comprises the following steps: producing PP laminating paper, namely performing PP laminating on the base paper to obtain PP laminating paper;
step two: manufacturing a container wall and a container bottom, performing die cutting on the obtained PP laminating paper to obtain container wall-shaped paper and the container bottom, heating the edge to be superposed of the obtained container wall-shaped paper, and then performing winding to obtain the container wall;
step three: preliminarily forming the container, namely filling the container bottom into the container wall, and heating and bonding to obtain a preliminarily formed container;
step four: processing a PP reinforcing layer, namely spraying atomized PP laminating liquid into the inner cavity of the primary forming container, and heating the bottom of the container to enable the inner connection part of the container wall and the container bottom to form the PP reinforcing layer;
step five: and (4) curling, namely curling the top of the container wall to obtain the PP laminating paper container.
Through adopting above-mentioned technical scheme, whole course of working flow nature is strong, does benefit to and realizes the pipelining, helps promoting the production efficiency of paper container, moreover, need not additionally to use the binder in the whole course of working, only drenches the hot melt of rete through to PP and can realize the bonding shaping, and the paper container stability of quality that makes is high, and heat resistance is good, can use at conventional microwave heating condition, and the practicality is strong.
Optionally, in the third step, the container bottom is pushed into the container wall from the container wall bottom.
By adopting the technical scheme, the turned edge in the installation process of the container bottom is positioned on one side far away from the opening of the container, so that the cross joint is formed at the internal joint of the container wall and the container bottom, the PP film spraying liquid can be conveniently gathered at the internal joint of the container wall and the container bottom in the following step, and the anti-permeability effect of the PP reinforcing layer is favorably improved.
Optionally, after the step three, after heating and bonding, the part of the container wall on the side of the container bottom away from the container opening is extruded, so that the thickness of the container wall extrusion part is increased, and a thickened wall is formed.
Through adopting above-mentioned technical scheme, through the extrusion formation thickening wall, simple process, and the thickening wall intensity that forms is higher, convenient and practical.
Optionally, the fourth step further includes: preparing a printing paper cylinder, printing a pattern on one side of base paper, performing PP film coating, performing die cutting to obtain printing paper, heating the edge part to be superposed of the printing paper, performing roll forming on the printing paper to obtain the printing paper cylinder, and curling the bottom of the printing paper cylinder; and sleeving a printing paper tube, sleeving the printing paper tube on the primary forming container, and bonding the printing paper tube and the primary forming container.
By adopting the technical scheme, the manufacturing of the printing paper tube can be synchronously carried out with the primary forming container, and the secondary centralized assembly is helpful for improving the processing efficiency and is convenient and practical.
Optionally, the fourth step further includes: and when the printing paper is subjected to die cutting, an easy-to-tear line is carved on the printing paper, and a double-ring buckle is adhered on the printing paper before the printing paper is sleeved.
Through adopting above-mentioned technical scheme, carve on printing shape paper and establish easily tearing the line for form easily tearing the portion on the printing fiber container who obtains, tear when needing to use and can become to tear the strip and use, with the dicyclo knot cooperation, convenient and practical.
In summary, the present application includes at least one of the following beneficial technical effects:
1. the designed PP film coating layer and the PP reinforcing layer reduce the infiltration of moisture in food to the container wall and the container bottom, so that the paper container can keep stiffness and isolation performance even in a microwave heating high-temperature environment, the paper container is convenient to be heated by microwaves, and the practicability of the paper container is improved;
2. the designed cover sealing assembly is simple in structure, the top cover can be simply fixed, the fixed top cover can block liquid from splashing, the top cover can be prevented from being expanded due to large pressure difference between the inside and the outside of the paper container in the heating process caused by over-tight sealing, and the practicability is high;
3. the processing technology who designs, whole course of working flow nature is strong, does benefit to and realizes the pipelining, helps promoting the production efficiency of paper container, moreover, need not additionally to use the binder in the whole course of working, only drenches the hot melt of rete through to PP and can realize the bonding shaping, and the paper container stability of quality that makes is high, and heat resistance is good, can use at conventional microwave heating condition, and the practicality is strong.
Drawings
Fig. 1 is a schematic structural diagram of an overall microwave PP laminated paper container according to an embodiment of the present application.
Fig. 2 is a sectional view of the microwavable PP laminated paper container of fig. 1.
Fig. 3 is an enlarged schematic view of a portion a in fig. 2.
FIG. 4 is a diagram showing a state in which the PP laminated paper container can be heated by microwave.
Fig. 5 is a schematic structural view of the double buckle of fig. 4.
Description of reference numerals: 1. a container wall; 11. a first crimp; 12. thickening the wall; 2. a container bottom; 3. PP film coating layer; 4. a PP reinforcing layer; 5. printing layer; 51. second curling; 6. a closure assembly; 61. tearing a strip; 611. an easily torn line; 62. a double-ring buckle; 621. a top wall perforation; 622. perforating the side wall; 7. and a top cover.
Detailed Description
The present application is described in further detail below with reference to figures 1-5.
The embodiment of the application discloses but PP drenches membrane paper container for microwave. Referring to fig. 1 and 2, the PP film-coated paper container for microwave application comprises a container wall 1, a container bottom 2, a printing layer 5, a PP film coating layer 3 and a cover assembly 6, wherein the container bottom 2 is connected to the lower side of the container wall 1, a container opening is formed at the upper end of the container wall 1, the printing layer 5 is sleeved outside the container wall 1, and the cover assembly 6 is arranged on the printing layer 5.
Referring to fig. 2 and 3, the inner wall and the outer wall of the container wall 1 and the container bottom 2 are sprayed with PP laminating layers 3, wherein the container wall 1 is formed by bending and bonding fan-shaped double-sided PP laminating paper sheets, and the bonding material used for bonding is PP laminating which is formed by heating and melting the double-sided PP laminating paper sheets at the overlapping part. The container wall 1 and the container bottom 2 are bonded through a molten PP film coating layer 3, a PP film coating solution is sprayed at the internal connection part of the container wall 1 and the container bottom 2, and is solidified and formed into a PP reinforcing layer 4, wherein the PP film coating solution in the embodiment is prepared by melting and extruding PP particles through a screw extruder. A first flange 11 is integrally arranged at the opening at the top end of the container wall 1, a thickened wall 12 is extruded at one end, close to the container bottom 2, of the container wall 1, and the thickness of the thickened wall 12 is larger than that of the container wall 1. The printing layer 5 of tube-shape is overlapped to container wall 1 outside cover, and the printing 5 outer walls of printing layer are printed and are had packing pattern to also spray the shaping and have PP to drench rete 3, in other embodiments, can also spray shaping PP and drench rete 3 on printing 5 inner walls of layer as required. The bottom of the printing layer 5 is integrally provided with a second bead 51, and the distance from the second bead 51 to the bottom end of the receptacle wall 1 is smaller than the distance from the receptacle bottom 2 to the bottom end of the receptacle wall 1. The printing layer 5 of the second curled edge 51 is also thermally melted and bonded with the container wall 1 through the PP laminating layer 3 outside the container wall 1.
Referring to fig. 4 and 5, the cover assembly 6 includes a tear strip 61 and a double-ring buckle 62, the tear strip 61 is formed by three easy-tear lines 611 engraved on the printing layer 5, wherein two easy-tear lines 611 are spaced apart along a bus direction of the printing layer 5, and one ends of the two easy-tear lines 611 near the second turned edge 51 are connected by another easy-tear line 611, so that the tear strip 61 can be torn away from the printing layer 5 near one end of the second turned edge 51, and the other ends of the two easy-tear lines 611 near the first turned edge 11 are still connected with the printing layer 5. The double-ring buckle 62 is adhered on the printing layer 5, in this embodiment, the top wall, the bottom wall and the side wall far away from the printing layer 5 of the double-ring buckle 62 are all provided with through holes, and the top wall through hole 621 and the side wall through hole 622 are communicated and smoothly transited, and the bottom wall through hole is also communicated and smoothly transited with the side wall through hole 622, wherein the bottom through hole is not shown in the figure. When the tear strip 61 is fixed, the free end of the tear strip 61 penetrates through the top wall perforation 621 of the double-ring buckle 62, penetrates out of the side wall perforation 622, penetrates through the side wall perforation 622, and finally penetrates out of the bottom wall through the opening, so that the tear strip 61 can be fixed. When the paper container is heated and the top cover 7 is arranged on the paper container, the free end of the torn strip 61 can bypass the container opening and the top cover 7 and pass through the double-ring buckle 62, and the top cover 7 is temporarily clamped and fixed.
The embodiment also discloses a processing technology of the PP laminating paper container capable of being used for microwave, which comprises the following steps:
the method comprises the following steps: and (3) PP laminating paper production, wherein PP particles are coated on two sides of the base paper through a double-sided laminating machine to obtain the double-sided laminated PP laminating paper.
Step two: the manufacturing method comprises the steps of manufacturing a container wall 1 and a container bottom 2, die-cutting the obtained PP laminating paper by using a die-cutting machine to obtain fan-shaped container wall-shaped paper and a circular container bottom 2, heating the edge portion to be overlapped of the obtained container wall-shaped paper by using an ultrasonic heater, conveying the container wall 1 to a paper cup machine, and performing coiling at a coiling station of the paper cup machine to obtain the container wall 1.
Step three: the container is initially formed, the container bottom 2 is also sent to a paper cup machine, the container bottom 2 is pushed into the container wall 1 from the bottom of the container wall 1 by the paper cup machine at a combination station, the paper cup machine is transferred to a heating station of the paper cup machine, a heater is used for heating the contact part of the container bottom 2 and the container wall 1 from the bottom of the container wall 1, so that the PP laminating layer 3 at the contact part of the container bottom 2 and the container wall 1 is melted, then the heating is stopped, the PP laminating layer 3 at the contact part of the container bottom 2 and the container wall 1 is re-solidified, and the container wall 1 and the container bottom 2 are bonded; after heating and bonding, the part of the container wall 1, which is far away from the opening side of the container, at the container bottom 2 is extruded at an extrusion thickening station of a paper cup machine, so that the thickness of the extrusion part of the container wall 1 is increased, a thickening wall 12 is formed, and the primary formed container is obtained.
Step four: processing a PP reinforcing layer 4, spraying atomized PP laminating liquid into the inner cavity of the primary forming container by using an atomizing spray gun, and heating the part of the container bottom 2 at a heating station of a paper cup machine to form the PP reinforcing layer 4 at the inner connection part of the container wall 1 and the container bottom 2;
preparing a printing paper cylinder, printing a pattern on one side of base paper by using a printer, performing PP (polypropylene) film coating on one side of the printed pattern by using a film coating machine, die-cutting the printing paper into fan-shaped printing paper by using a die-cutting machine, synchronously die-cutting an easy-to-tear line 611 on the printing paper, heating the edge to be superposed of the printing paper by using an ultrasonic heater, performing roll forming on the printing paper by using a roll forming station of a paper cup machine to obtain the printing paper cylinder, curling the bottom of the printing paper cylinder by using the paper cup machine, heating the position, which is used for adhering the double ring buckles 62, on the printing paper cylinder by using the ultrasonic heater, melting the PP film coating outside the printing paper cylinder, and adhering the double ring buckles 62 at the melting positions of the PP film coating outside the printing paper cylinder;
sleeving a printing paper cylinder, sleeving the printing paper cylinder on a primary forming container, heating the printing paper cylinder and the primary forming container together from the bottom of the outer side of the printing paper cylinder to melt the PP laminating layer 3 at the bottom of the outer layer of the container wall 1, re-solidifying after adhering the printing paper cylinder, and bonding the primary forming container and the printing paper cylinder;
step five: and (4) curling, namely curling the top of the container wall 1 at a curling station of a paper cup machine to obtain the PP laminated paper container.
The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims (10)

1. The utility model provides a but PP drenches membrane paper container for microwave, includes container wall (1) and container end (2), container end (2) are connected in container wall (1) downside, container wall (1) upper end forms container opening, its characterized in that: all be provided with PP on the inner wall at the bottom of container wall (1) and the container (2) and drench rete (3), container wall (1) is formed by the scraps of paper bonding, just all pass through between container wall (1) and the container at the bottom of (2) PP drenches rete (3) and bonds, the inside junction department of (2) still is provided with PP enhancement layer (4) at the bottom of container wall (1) and the container, container wall (1) top end opening part is provided with first turn-up (11).
2. The microwavable PP laminated paper container of claim 1, wherein: one end of the container wall (1), which is close to the container bottom (2), is provided with a thickening wall (12), and the thickness of the thickening wall (12) is greater than that of the container wall (1).
3. The microwavable PP laminated paper container of claim 1, wherein: the printing layer (5) is arranged on the outer side of the container wall (1), the PP laminating layer (3) is also arranged on the outer wall of the printing layer (5), and the bottom of the printing layer (5) is provided with a second turned edge (51).
4. The microwavable PP laminated paper container according to claim 3, wherein: the distance from the second curled edge (51) to the bottom end of the container wall (1) is smaller than the distance from the container bottom (2) to the bottom end of the container wall (1).
5. The microwavable PP laminated paper container according to claim 3, wherein: be provided with closing cap subassembly (6) on printing layer (5) outer wall, closing cap subassembly (6) are including tear strip (61) and dicyclo knot (62), tear strip (61) set up on printing layer (5), and can certainly tear strip (61) one end tears with printing layer (5) and leaves, the dicyclo is detained (62) and is pasted and establish on printing layer (5), just the free end after tear strip (61) are torn can be walked around the container opening and pass the dicyclo is detained (62) and is fixed.
6. The processing technology of the PP laminated paper container capable of being used for microwave according to claim 1, is characterized in that: the method comprises the following steps:
the method comprises the following steps: producing PP laminating paper, namely performing PP laminating on the base paper to obtain PP laminating paper;
step two: manufacturing a container wall (1) and a container bottom (2), die-cutting the obtained PP laminating paper to obtain container wall-shaped paper and the container bottom (2), heating the edge to be superposed of the obtained container wall-shaped paper, and coiling to obtain the container wall (1);
step three: the method comprises the following steps of (1) primarily forming a container, namely, filling a container bottom (2) into a container wall (1), and heating and bonding to obtain a primarily formed container;
step four: processing a PP reinforcing layer (4), spraying atomized PP laminating liquid into the inner cavity of the primary forming container, and heating the bottom (2) of the container to form the PP reinforcing layer (4) at the inner connection part of the container wall (1) and the container bottom (2);
step five: and (4) curling, namely curling the top of the container wall (1) to obtain the PP laminating paper container.
7. The processing technology of the microwavable PP laminated paper container according to claim 6, wherein the processing technology comprises the following steps: in the third step, the container bottom (2) is pushed into the container wall (1) from the bottom of the container wall (1).
8. The processing technology of the microwavable PP laminated paper container according to claim 6, wherein the processing technology comprises the following steps: the third step further comprises: after heating and bonding, the part of the container wall (1) on the side of the container bottom (2) far away from the container opening is extruded, so that the thickness of the extruded part of the container wall (1) is increased to form a thickened wall (12).
9. The processing technology of the microwavable PP laminated paper container according to claim 6, wherein the processing technology comprises the following steps: the fourth step further comprises: preparing a printing paper cylinder, printing a pattern on one side of base paper, performing PP film coating, performing die cutting to obtain printing paper, heating the edge part to be superposed of the printing paper, performing roll forming on the printing paper to obtain the printing paper cylinder, and curling the bottom of the printing paper cylinder; and sleeving a printing paper tube, sleeving the printing paper tube on the primary forming container, and bonding the printing paper tube and the primary forming container.
10. The processing technology of the microwavable PP laminated paper container according to claim 9, wherein the processing technology comprises the following steps: the fourth step further comprises: when the printing paper is subjected to die cutting, an easy-to-tear line (611) is carved on the printing paper, and a double-ring buckle (62) is adhered on the printing paper before the printing paper is sleeved.
CN202110381331.4A 2021-04-09 2021-04-09 PP (polypropylene) coated paper container capable of being used for microwave and processing technology thereof Pending CN112978006A (en)

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CN202110381331.4A CN112978006A (en) 2021-04-09 2021-04-09 PP (polypropylene) coated paper container capable of being used for microwave and processing technology thereof

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Application Number Priority Date Filing Date Title
CN202110381331.4A CN112978006A (en) 2021-04-09 2021-04-09 PP (polypropylene) coated paper container capable of being used for microwave and processing technology thereof

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113752585A (en) * 2021-08-23 2021-12-07 苏州市和好塑业有限公司 Direct-spraying PP (propene Polymer) process for reducing glue layer of plastic box

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113752585A (en) * 2021-08-23 2021-12-07 苏州市和好塑业有限公司 Direct-spraying PP (propene Polymer) process for reducing glue layer of plastic box

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