CN111793257A - Packaging material and manufacturing method thereof - Google Patents
Packaging material and manufacturing method thereof Download PDFInfo
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- CN111793257A CN111793257A CN202010726410.XA CN202010726410A CN111793257A CN 111793257 A CN111793257 A CN 111793257A CN 202010726410 A CN202010726410 A CN 202010726410A CN 111793257 A CN111793257 A CN 111793257A
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L9/00—Compositions of homopolymers or copolymers of conjugated diene hydrocarbons
- C08L9/02—Copolymers with acrylonitrile
- C08L9/04—Latex
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- 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
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2203/00—Applications
- C08L2203/16—Applications used for films
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/14—Polymer mixtures characterised by other features containing polymeric additives characterised by shape
- C08L2205/16—Fibres; Fibrils
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Abstract
The invention belongs to the technical field of packaging materials, and particularly relates to a packaging material and a manufacturing method thereof, wherein the packaging material is composed of the following raw materials in parts by weight: 20-30 parts of natural rubber emulsion, 40-45 parts of nitrile rubber emulsion, 5-6 parts of phospholipid molecular solution, 3-6 parts of montmorillonite, 1-2 parts of phthalimide sylvite, 0.5-1 part of curing agent, 4-5 parts of sepiolite fiber, 8-10 parts of polyolefin elastic fiber, 0.2-0.5 part of epoxy silane coupling agent and 10-12 parts of rosin water; the invention leads the montmorillonite to be stripped and dispersed into thinner single chips through the phthalimide sylvite, and then leads the montmorillonite to be organically modified through the stearic acid and the epoxy silane coupling agent, thus leading the montmorillonite layers to have lipophilicity, greatly increasing intermolecular force between the montmorillonite and the high molecular polymer when the montmorillonite is used as the filler in the natural rubber emulsion and the nitrile rubber emulsion, further improving the bonding force between the high molecular polymers, and increasing the later-stage tensile strength and wear resistance of the polymers.
Description
Technical Field
The invention belongs to the technical field of packaging materials, and particularly relates to a packaging material and a manufacturing method of the packaging material.
Background
The packaging material is used for manufacturing packaging containers, packaging decoration, packaging printing, packaging transportation and the like, meets the requirements of product packaging, and comprises main packaging materials such as metal, plastic, glass, ceramics, paper, bamboo, wild mushrooms, natural fibers, chemical fibers, composite materials and the like, and auxiliary materials such as strapping, decoration, printing materials and the like.
Packaging materials play an important role in the overall packaging industry, and are the basis for developing packaging technologies, improving packaging quality and reducing packaging cost. Therefore, the method has important significance for understanding the performance, application range and development trend of the packaging material, reasonably selecting the packaging material, expanding the source of the packaging material, adopting new packaging and new processing technology, creating novel packaging and packaging technology and improving the technical level and the management level of packaging.
At present, with the development of economy, the use of packaging bags is continuously increasing with the increase of various disposable consumables, and the improvement of the packaging bags is more and more, for example, the patent numbers are as follows: the patent of CN201811212209.9 proposes a method for manufacturing an environment-friendly packaging material containing modified diatom ooze, which comprises the following steps: step one, weighing the following raw materials in parts by weight: 20-30 parts of modified diatom ooze, 22-28 parts of polylactic acid, 12-18 parts of gardenia oil modified cassava starch, 5-9 parts of nano zinc oxide, 6-10 parts of wollastonite and 1-3 parts of a cross-linking agent. The packaging material provided by the invention adopts green and environment-friendly raw materials, has degradability, is excellent in antibacterial effect and good in mechanical property, and the performance of the packaging material obtained by the raw materials in a proper proportion and by special process treatment is greatly improved compared with that of the packaging material in the prior art. 1. In the prior art, plastic bags for storing clothes or dried fruits and the like are sealed by adopting plastic sealing strips, the plastic sealing strips have the function similar to a zipper, the openings of the plastic bags can be sealed by pushing plastic clamping blocks, but the clamping blocks are easy to fall off and lose in the using process, so that the plastic bags can not be sealed any more, a large amount of gas can be stored in the plastic bags in the sealing process, the volume of the plastic bags can be increased, and the plastic bags are inconvenient to store; although there are also devices for evacuating vacuum in the prior art, these devices are mostly bulky and energy-consuming; 2. the plastic bag in the prior art has poor wear resistance and poor anti-pulling capability.
Disclosure of Invention
The invention provides a packaging material and a manufacturing method thereof, aiming at making up for the defects of the prior art and solving the problems that gas is stored in the plastic bag when the plastic bag is sealed and the wear resistance and the tensile strength of the plastic bag are poor in the prior art.
The technical scheme adopted by the invention for solving the technical problems is as follows: the packaging material provided by the invention comprises the following raw materials in parts by weight:
20-30 parts of natural rubber emulsion, 40-45 parts of nitrile rubber emulsion, 5-6 parts of phospholipid molecular solution, 3-6 parts of montmorillonite, 1-2 parts of phthalimide sylvite, 0.5-1 part of curing agent, 4-5 parts of sepiolite fiber, 8-10 parts of polyolefin elastic fiber, 0.2-0.5 part of epoxy silane coupling agent and 10-12 parts of rosin water;
preferably, the curing agent is one or a mixture of more of ethylenediamine, polyethylene polyamine, polypropylene diamine, polybutylene diamine and polybutylene polyamine.
A method of making a packaging material, the method comprising the steps of:
s1, dissolving phthalimide potassium salt in water, stirring for 10-15min at 85-90 ℃, adding montmorillonite into a mixed solution of phthalimide potassium salt and water, then stirring vigorously for 25-35min to form montmorillonite suspension, standing the suspension in S1 for 24-36h at low temperature, controlling the temperature at 15-25 ℃, then carrying out vacuum filtration on the precipitated suspension, drying the filtered montmorillonite, and grinding for later use; cations in the phthalimide sylvite can exchange with exchangeable cations among montmorillonite layers, the ions play a role in balancing negative charges on silicon-oxygen tetrahedrons, and meanwhile, the montmorillonite can be stripped and dispersed into thinner single chips under the action of an interlayer solvent, so that the subsequent intercalation of a high-molecular polymer is facilitated;
s2, adding stearic acid into absolute ethyl alcohol, continuously stirring for 15-20min after the stearic acid is completely dissolved, then adding the montmorillonite treated in S1 into a mixed solution of the ethyl alcohol and the stearic acid, increasing the rotating speed to 1800-2000r/min after the filler is completely added, then adding an epoxy silane coupling agent, stirring for 30-40min, standing for 24h, then carrying out suction filtration and drying to obtain the modified organic montmorillonite; the montmorillonite is not beneficial to the dispersion in a polymer matrix because of the lipophobicity shown by a large amount of inorganic ions between layers, so the montmorillonite is organically modified, the aim is to change the high polarity of the surface of the montmorillonite, change the hydrophilicity between the montmorillonite layers into lipophilicity, reduce the surface energy of the montmorillonite, increase the interlayer spacing of the montmorillonite, enable the chains or monomers of a polymer to enter between the layers, and enable an epoxy silane coupling agent to be between an inorganic interface and an organic interface, so that a bonding layer of the organic matrix, the silane coupling agent and the inorganic matrix can be formed, and further, when the epoxy silane coupling agent is inserted between the montmorillonite layers, the connection strength of the montmorillonite and the organic polymer can be increased, so that the viscosity of the polymer can be greatly improved, the later strength can be increased, and the later-stage wear resistance of a;
s3, pouring the natural rubber emulsion and the nitrile rubber emulsion into a reaction kettle for stirring, wherein the stirring temperature is 100-110 ℃, adding the organic montmorillonite, the rosin water, the sepiolite fiber, the polyolefin elastic fiber and the wollastonite after the surface of the rubber material is smooth, fully stirring for 45-60min, and then preserving heat for 30 min; the sepiolite fibers and the polyolefin elastic fibers can greatly increase the tensile strength of the natural rubber emulsion and the nitrile-butadiene rubber emulsion at the later stage, and can also increase the elasticity of the packaging bag formed by film blowing;
s4, sequentially adding the phospholipid molecular solution, the phthalimide potassium salt and the curing agent into the reaction kettle, firstly controlling the stirring device to stir at the speed of 300-;
s5, adding the viscous mixed colloid obtained in the S4 into a double-screw extruder for melt extrusion and granulation, and then carrying out film blowing on the granules through a blow molding machine to form a rectangular plastic bag with an opening at one end, wherein the film blowing temperature is controlled at 115-125 ℃;
s6, connecting the edge of the air extracting cylinder with one side of the opening of the rectangular plastic bag in a hot pressing mode, and fixedly connecting the edge of the air extracting hole of the air extracting cylinder with the rectangular plastic packaging bag through a hot press so that the interior of the air extracting cylinder is communicated with the interior of the rectangular plastic bag through the air extracting hole, and then the packaging bag can be manufactured.
Preferably, the packaging bag comprises a rectangular plastic bag, an air pumping cylinder, a pulling rod, an arc-shaped pressing plate, an air outlet and an air pumping hole; the air exhaust cylinder and the arc-shaped pressure plate are integrally spliced into a cylindrical structure, and the length of the arc-shaped pressure plate is smaller than that of the air exhaust cylinder; one outer side surface of the opening of the rectangular plastic bag is adhered to the inner side wall of the air pumping cylinder; the opening of the rectangular plastic bag is integrally clamped between the air suction cylinder and the arc-shaped pressing plate; one end of the arc-shaped pressing plate is movably hinged to the inner side surface of the air suction cylinder through a torsion spring, an L-shaped inserting rod is movably arranged on the outer edge of the other end of the arc-shaped pressing plate, and the L-shaped inserting rod is movably inserted into a slot in the outer edge of the arc-shaped pressing plate; the end part of the L-shaped inserting rod penetrates into the rectangular frame, and the rectangular frame is fixedly arranged on the inner side surface of the air pumping cylinder; an arc-shaped pressure groove is formed in the surface, close to the arc-shaped pressure plate, of the air pumping cylinder; the inner side surface of the arc-shaped pressing plate is movably provided with an elastic pressing plate through a spring; the elastic pressing plate presses the opening of the rectangular plastic bag tightly in the arc-shaped pressing groove; a drawing rod is movably arranged in the rectangular plastic bag; one end of the pull rod extends out of the end part of the air suction cylinder; the other end of the drawing rod is fixedly connected with the first piston plate; one side of the rear end of the air pumping cylinder, which is close to the rectangular plastic bag, is provided with an air pumping hole; the rear end of the air pumping cylinder is provided with an air outlet hole at a position opposite to the air pumping hole; a baffle ring is fixedly arranged on the inner wall of the air pumping cylinder between the air outlet and the first piston plate; an installation plate is fixedly arranged on the inner wall of the rear end of the air pumping cylinder; one surface of the mounting plate, which is close to the air exhaust hole, is fixedly connected with one end of the spring, and the other end of the spring penetrates through the air exhaust hole and is fixedly connected with the first rubber sealing ball; the end part of the spring fixedly connected with the first rubber sealing ball is fixedly connected with one end of a connecting rope, the other end of the connecting rope penetrates through the mounting plate and is fixedly connected with the edge of a second rubber sealing ball, the second rubber sealing ball is positioned outside the air pumping cylinder, and the edge of the second rubber sealing ball positioned outside the air pumping cylinder is fixedly connected with one end of a pull rope; the other end of the pull rope is in bolted connection with a bolt ring fixed on the outer side of the T-shaped sliding block; the T-shaped sliding block is positioned in a T-shaped sliding groove at the edge of the curved surface of the air extraction cylinder; a straight gear plate is arranged on the upper surface of the T-shaped sliding block; the inner wall of the top of the T-shaped sliding chute is provided with teeth matched with the straight gear plate; the bottom of the T-shaped sliding block is fixedly provided with a sliding plate through a spring compression pipe; a spring is arranged in the spring compression pipe and fixedly connects the T-shaped sliding block with the sliding plate;
when the air extracting device works, the opening of the rectangular plastic bag can be directly clamped between the air extracting cylinder and the arc-shaped pressing plate, and then the L-shaped inserting rod is pushed outwards, so that the end part of the L-shaped inserting rod is inserted into the rectangular frame; the straight surface of the air pumping cylinder and the straight surface of the arc-shaped pressing plate can tightly press and seal the opening of the rectangular plastic bag, and meanwhile, the inner wall of the arc-shaped pressing plate is fixedly provided with an elastic pressing plate through a spring, and the elastic pressing plate can further tightly press the opening of the rectangular plastic bag in the arc-shaped pressing groove on the inner side wall of the air pumping cylinder, so that the opening of the rectangular plastic bag can be tightly pressed and pressed, and the opening of the rectangular plastic bag cannot be damaged; in the process of loading articles into the rectangular plastic bag and then sealing the rectangular plastic bag, gas is inevitably introduced into the rectangular plastic bag, so that the volume of the rectangular plastic bag is increased, and the rectangular plastic bag is inconvenient to store; the invention can pump the air in the rectangular plastic bag away through the air pumping cylinder, when air pumping is needed, the pulling rod can be pulled outwards, the pulling rod further drives the first piston plate to move outwards, at the moment, the first rubber sealing ball is separated from the outer port of the air pumping hole under the action of the spring fixedly connected with the first rubber sealing ball, meanwhile, the spring pulls the second rubber sealing ball through the connecting rope to block the air outlet hole, when the first piston plate moves outwards, the air in the rectangular plastic bag enters the air pumping cylinder through the air pumping hole, when the air pumped into the air pumping cylinder from the rectangular plastic bag is needed to be discharged, the T-shaped sliding block in the T-shaped sliding groove can be pressed, so that the T-shaped sliding block extrudes the spring pipe at the bottom of the T-shaped sliding block, and further, the straight gear plate on the T-shaped sliding block is separated from the teeth on the inner wall at the top of the T-shaped sliding groove, at the moment, the T-shaped sliding block can move to a position close to the end of the pulling rod in the T-shaped sliding groove until the second rubber sealing ball is separated from the port of the air outlet hole, at the moment, the connecting rope fixedly connected with the second rubber sealing ball can pull the spring at the same time so as to enable the first rubber sealing ball to move towards the direction of the air outlet hole and further seal the air outlet hole, at the moment, the pulling rod is pushed towards the rear end of the air extracting tube, at the moment, the gas in the air extracting tube can be discharged through the air outlet hole, then the T-shaped sliding block is pressed and is pulled towards the rear end of the air extracting tube, at the moment, the pull rope fixedly connected with the second rubber sealing ball can be loosened, at the moment, the spring in the air outlet hole can push the first rubber sealing ball out from the inside of the air outlet hole again, and the spring can plug the second rubber sealing ball into the air outlet hole by pulling the connecting rope so as to further seal the, can draw the pull pole to outside once more this moment, and then take out the inside gas of rectangle plastic bag once more, so reciprocating cycle, until the inside gas of rectangle plastic bag is all taken out, all take out the back, move T shape slider to the one end of keeping away from the venthole, first rubber sealing ball seals the aspirating hole this moment for the inside sealed state that keeps of rectangle plastic bag.
Preferably, the surface of the sliding plate, which is in contact with the bottom of the T-shaped sliding chute, is movably provided with balls, and the balls are uniformly arranged at the bottom of the sliding plate; during operation, the ball at the bottom of the sliding plate can greatly reduce the frictional resistance between the sliding plate and the bottom of the T-shaped sliding groove, so that the T-shaped sliding block can slide more smoothly in the T-shaped sliding groove.
Preferably, the bottom end of the straight gear plate is positioned in a rectangular cavity inside the T-shaped sliding block, and the top end of the straight gear plate extends out of a rectangular groove at the top of the rectangular cavity; the bottom of the straight gear plate is fixedly connected with the upper surface of the supporting plate; the length of the supporting plate is greater than that of the straight gear plate; the upper surfaces of the two ends of the supporting plate are fixedly connected with one end of the push rod; the other end of the push rod extends into the columnar groove body and is fixedly connected with the center position of the second piston plate; the top end of the columnar groove body is fixedly connected with the inner wall of the top of the rectangular cavity; the second piston plate is fixedly connected with the inner wall of the top of the rectangular cavity through a spring; the top of the second piston plate is communicated with the interior of the spring compression tube through an airflow channel; when the sliding device works, when the T-shaped sliding block needs to slide, the T-shaped sliding block needs to be pressed inwards at first, the T-shaped sliding block can enable the straight gear plate to be separated from teeth on the inner wall of the top of the T-shaped sliding groove by extruding the spring compression pipe, and then the teeth on the top of the T-shaped sliding groove are not meshed with the straight gear plate, the T-shaped sliding block can be moved inside the T-shaped sliding groove at the moment, the T-shaped sliding block extrudes the spring compression pipe, gas inside the spring compression pipe can enter the columnar groove body through the airflow channel, and then the second piston plate is pushed to move towards the direction close to the spring compression pipe, a push rod fixedly connected with the second piston plate at the moment can push the supporting plate to move towards the direction close to the spring compression pipe, so that the straight gear plate shrinks towards the inside of the rectangular cavity, and then the spring compression pipe shrinks and simultaneously can drive the straight gear plate to shrink, therefore, the straight gear plate and the teeth on the inner wall of The teeth are disengaged, and thus the strength is saved.
The invention has the following beneficial effects:
1. the invention relates to a packaging material and a manufacturing method thereof, wherein the montmorillonite is peeled and dispersed into thinner single crystal chips by phthalimide potassium salt, and then is organically modified by stearic acid and epoxy silane coupling agent, so that the montmorillonite layers have lipophilicity, and the intermolecular force between the montmorillonite and high molecular polymer can be greatly increased when the montmorillonite and the high molecular polymer are used as fillers in natural rubber emulsion and nitrile rubber emulsion, thereby improving the bonding force between the high molecular polymer and increasing the later-stage tensile strength and wear resistance of the polymer.
2. According to the packaging material and the manufacturing method of the packaging material, the air exhaust cylinder, the mounting plate, the first rubber sealing ball and the second rubber sealing ball are arranged, so that the air outlet and the air exhaust hole can be intermittently sealed through the position change of the second rubber sealing ball and the first rubber sealing ball, the air in the rectangular plastic bag can be exhausted and then exhausted to the external environment, and the interior of the rectangular plastic bag filled with articles can be evacuated to be a vacuum environment, so that the articles in the rectangular plastic bag can be conveniently stored, the storage volume of the compressible articles can be greatly reduced, and the compressible articles can be conveniently stored.
3. According to the packaging material and the manufacturing method of the packaging material, the spring compression pipe, the supporting plate and the columnar groove body are arranged, the T-shaped sliding block extrudes the spring compression pipe, meanwhile, gas located in the spring compression pipe enters the columnar groove body through the airflow channel, the second piston plate is pushed to move towards the direction close to the spring compression pipe, the supporting plate is pushed by the push rod fixedly connected with the second piston plate to move towards the direction close to the spring compression pipe, the straight gear plate is contracted towards the inside of the rectangular cavity, the spring compression pipe is contracted, meanwhile, the straight gear plate is driven to contract, therefore, the straight gear plate can be disengaged from teeth on the inner wall of the top of the T-shaped sliding groove only by slightly compressing the spring compression pipe, and further, strength can be saved.
Drawings
The invention will be further explained with reference to the drawings.
FIG. 1 is a flow chart of a method of making the packaging material of the present invention;
FIG. 2 is a schematic view of a first configuration of the present invention;
FIG. 3 is a second schematic structural view of the present invention;
FIG. 4 is a schematic end view of the pump cylinder and the arc-shaped pressure plate of the present invention;
FIG. 5 is a schematic view of the internal structure of the pump cylinder;
FIG. 6 is an enlarged view of a portion of FIG. 5 at A;
FIG. 7 is a schematic view of the connection of the T-shaped chute and the T-shaped slider;
in the figure: the device comprises a rectangular plastic bag 1, an air suction cylinder 2, a drawing rod 3, a rectangular frame 4, an L-shaped inserted rod 5, an arc-shaped pressing plate 6, an arc-shaped pressing groove 7, a pulling rope 8, a T-shaped sliding groove 9, a T-shaped sliding block 10, a bolting ring 11, an air outlet hole 12, an air suction hole 13, a baffle ring 14, a first piston plate 15, a straight gear plate 16, a rectangular cavity 17, a sliding plate 18, a spring compression pipe 19, a supporting plate 20, a columnar groove body 21, a second piston plate 22, an elastic pressing plate 23 and a pushing rod 24.
Detailed Description
In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.
As shown in fig. 1 to 7, the packaging material of the present invention is composed of the following raw materials by weight:
20-30 parts of natural rubber emulsion, 40-45 parts of nitrile rubber emulsion, 5-6 parts of phospholipid molecular solution, 3-6 parts of montmorillonite, 1-2 parts of phthalimide sylvite, 0.5-1 part of curing agent, 4-5 parts of sepiolite fiber, 8-10 parts of polyolefin elastic fiber, 0.2-0.5 part of epoxy silane coupling agent and 10-12 parts of rosin water;
in one embodiment of the present invention, the curing agent is one or a mixture of several of ethylenediamine, polyethylene polyamine, polypropylene diamine, polybutylene diamine, and polybutylene polyamine.
A method of making a packaging material, the method comprising the steps of:
s1, dissolving phthalimide potassium salt in water, stirring for 10-15min at 85-90 ℃, adding montmorillonite into a mixed solution of phthalimide potassium salt and water, then stirring vigorously for 25-35min to form montmorillonite suspension, standing the suspension in S1 for 24-36h at low temperature, controlling the temperature at 15-25 ℃, then carrying out vacuum filtration on the precipitated suspension, drying the filtered montmorillonite, and grinding for later use; cations in the phthalimide sylvite can exchange with exchangeable cations among montmorillonite layers, the ions play a role in balancing negative charges on silicon-oxygen tetrahedrons, and meanwhile, the montmorillonite can be stripped and dispersed into thinner single chips under the action of an interlayer solvent, so that the subsequent intercalation of a high-molecular polymer is facilitated;
s2, adding stearic acid into absolute ethyl alcohol, continuously stirring for 15-20min after the stearic acid is completely dissolved, then adding the montmorillonite treated in S1 into a mixed solution of the ethyl alcohol and the stearic acid, increasing the rotating speed to 1800-2000r/min after the filler is completely added, then adding an epoxy silane coupling agent, stirring for 30-40min, standing for 24h, then carrying out suction filtration and drying to obtain the modified organic montmorillonite; the montmorillonite is not beneficial to the dispersion in a polymer matrix because of the lipophobicity shown by a large amount of inorganic ions between layers, so the montmorillonite is organically modified, the aim is to change the high polarity of the surface of the montmorillonite, change the hydrophilicity between the montmorillonite layers into lipophilicity, reduce the surface energy of the montmorillonite, increase the interlayer spacing of the montmorillonite, enable the chains or monomers of a polymer to enter between the layers, and enable an epoxy silane coupling agent to be between an inorganic interface and an organic interface, so that a bonding layer of the organic matrix, the silane coupling agent and the inorganic matrix can be formed, and further, when the epoxy silane coupling agent is inserted between the montmorillonite layers, the connection strength of the montmorillonite and the organic polymer can be increased, so that the viscosity of the polymer can be greatly improved, the later strength can be increased, and the later-stage wear resistance of a;
s3, pouring the natural rubber emulsion and the nitrile rubber emulsion into a reaction kettle for stirring, wherein the stirring temperature is 100-110 ℃, adding the organic montmorillonite, the rosin water, the sepiolite fiber, the polyolefin elastic fiber and the wollastonite after the surface of the rubber material is smooth, fully stirring for 45-60min, and then preserving heat for 30 min; the sepiolite fibers and the polyolefin elastic fibers can greatly increase the tensile strength of the natural rubber emulsion and the nitrile-butadiene rubber emulsion at the later stage, and can also increase the elasticity of the packaging bag formed by film blowing;
s4, sequentially adding the phospholipid molecular solution, the phthalimide potassium salt and the curing agent into the reaction kettle, firstly controlling the stirring device to stir at the speed of 300-;
s5, adding the viscous mixed colloid obtained in the S4 into a double-screw extruder for melt extrusion and granulation, and then carrying out film blowing on the granules through a blow molding machine to form a rectangular plastic bag with an opening at one end, wherein the film blowing temperature is controlled at 115-125 ℃;
s6, connecting the edge of the air extracting cylinder with one side of the opening of the rectangular plastic bag in a hot pressing mode, and fixedly connecting the edge of the air extracting hole of the air extracting cylinder with the rectangular plastic packaging bag through a hot press so that the interior of the air extracting cylinder is communicated with the interior of the rectangular plastic bag through the air extracting hole, and then the packaging bag can be manufactured.
As an embodiment of the present invention, the packing bag comprises a rectangular plastic bag 1, an air pump 2, a pull rod 3, an arc-shaped pressing plate 6, an air outlet 12 and an air pump 13; the air extraction cylinder 2 and the arc-shaped pressing plate 6 are integrally spliced into a cylindrical structure, and the length of the arc-shaped pressing plate 6 is smaller than that of the air extraction cylinder 2; one outer side surface of the opening of the rectangular plastic bag 1 is adhered to the inner side wall of the air pumping cylinder 2; the opening of the rectangular plastic bag 1 is integrally clamped between the air suction tube 2 and the arc-shaped pressing plate 6; one end of the arc-shaped pressing plate 6 is movably hinged to the inner side surface of the air extracting cylinder 2 through a torsion spring, an L-shaped inserting rod 5 is movably arranged on the outer edge of the other end of the arc-shaped pressing plate 6, and the L-shaped inserting rod 5 is movably inserted into a slot in the outer edge of the arc-shaped pressing plate 6; the end part of the L-shaped inserted bar 5 penetrates into the rectangular frame 4, and the rectangular frame 4 is fixedly arranged on the inner side surface of the air suction cylinder 2; an arc-shaped pressure groove 7 is formed in the surface, close to the arc-shaped pressure plate 6, of the air pumping cylinder 2; the inner side surface of the arc-shaped pressing plate 6 is movably provided with an elastic pressing plate 23 through a spring; the elastic pressing plate 23 presses the opening of the rectangular plastic bag 1 tightly in the arc-shaped pressing groove 7; a drawing rod 3 is movably arranged in the rectangular plastic bag 1; one end of the pull rod 3 extends out of the end part of the air suction cylinder 2; the other end of the drawing rod 3 is fixedly connected with a first piston plate 15; one side of the rear end of the air pumping cylinder 2 close to the rectangular plastic bag 1 is provided with an air pumping hole 13; the rear end of the air pumping cylinder 2 is provided with an air outlet 12 at a position opposite to the air pumping hole 13; a baffle ring 14 is fixedly arranged on the inner wall of the air pumping cylinder 2 between the air outlet 12 and the first piston plate 15; an installation plate is fixedly arranged on the inner wall of the rear end of the air pumping cylinder 2; one surface of the mounting plate, which is close to the air exhaust hole 13, is fixedly connected with one end of a spring, and the other end of the spring penetrates through the air exhaust hole 13 and is fixedly connected with a first rubber sealing ball; the end part of the spring fixedly connected with the first rubber sealing ball is fixedly connected with one end of a connecting rope, the other end of the connecting rope penetrates through the mounting plate and is fixedly connected with the edge of a second rubber sealing ball, the second rubber sealing ball is positioned outside the air extracting cylinder 2, and the edge of the second rubber sealing ball positioned outside the air extracting cylinder 2 is fixedly connected with one end of a pull rope 8; the other end of the pull rope 8 is bolted with a bolting ring 11 fixed on the outer side of the T-shaped sliding block 10; the T-shaped sliding block 10 is positioned in the T-shaped sliding groove 9 at the edge of the curved surface of the air extraction cylinder 2; a straight gear plate 16 is arranged on the upper surface of the T-shaped sliding block 10; the inner wall of the top of the T-shaped chute 9 is provided with teeth matched with the straight gear plate 16; the bottom of the T-shaped sliding block 10 is fixedly provided with a sliding plate 18 through a spring compression pipe 19; a spring is arranged in the spring compression pipe 19 and fixedly connects the T-shaped sliding block 10 with the sliding plate 18;
when the air extracting device works, the opening of the rectangular plastic bag 1 can be directly clamped between the air extracting cylinder 2 and the arc-shaped pressing plate 6, and then the L-shaped inserting rod 5 is pushed outwards, so that the end part of the L-shaped inserting rod 5 is inserted into the rectangular frame 4; the straight surface of the air exhaust cylinder 2 and the straight surface of the arc-shaped pressing plate 6 can tightly press and seal the opening of the rectangular plastic bag 1, and meanwhile, the inner wall of the arc-shaped pressing plate 6 is fixedly provided with an elastic pressing plate 23 through a spring, and the elastic pressing plate 23 can further tightly press the opening of the rectangular plastic bag 1 in the arc-shaped pressing groove 7 on the inner side wall of the air exhaust cylinder 2, so that the opening of the rectangular plastic bag 1 can be tightly pressed, and the opening of the rectangular plastic bag 1 cannot be damaged; in the process of loading the rectangular plastic bag 1 with articles and then sealing, air is inevitably introduced into the rectangular plastic bag 1, so that the volume of the rectangular plastic bag 1 is increased and the rectangular plastic bag is inconvenient to store; the invention can pump the air in the rectangular plastic bag 1 through the air pump 2, when air is required to be pumped, the pulling rod 3 can be pulled outwards, the pulling rod 3 can drive the first piston plate 15 to move outwards, at the moment, the first rubber sealing ball is separated from the outer port of the air pumping hole 13 under the action of the spring fixedly connected with the first rubber sealing ball, meanwhile, the spring can pull the second rubber sealing ball through the connecting rope to block the air outlet hole 12, when the first piston plate 15 moves outwards, the air in the rectangular plastic bag 1 can enter the air pump 2 through the air pumping hole 13, when the air pumped into the air pump 2 from the rectangular plastic bag 1 is required to be exhausted, the T-shaped sliding block 10 in the T-shaped sliding groove 9 can be pressed at the moment, so that the T-shaped sliding block 10 presses the spring compression pipe 19 at the bottom of the T-shaped sliding block 10, and the straight gear plate 16 on the T-shaped sliding block 10 is separated from the teeth on the top inner wall of the T-shaped sliding groove, at this time, the T-shaped sliding block 10 can be moved to a position close to the end of the pulling rod 3 in the T-shaped sliding groove 9 until the second rubber sealing ball is separated from the port of the air outlet hole 12, at this time, the connecting rope fixedly connected with the second rubber sealing ball pulls the spring at the same time, so that the first rubber sealing ball moves towards the direction of the air outlet hole 13, so as to seal the air outlet hole 13, at this time, the pulling rod 3 is pushed towards the rear end of the air pumping cylinder 2, at this time, the gas in the air pumping cylinder 2 is discharged through the air outlet hole 12, then the T-shaped sliding block 10 is pressed and the T-shaped sliding block 10 is stirred towards the rear end of the air pumping cylinder 2, at this time, the pulling rope 8 fixedly connected with the second rubber sealing ball becomes loose, at this time, the spring in the air pumping hole 13 pushes the first rubber sealing ball out of the air pumping hole 13 again, and the spring plugs the second rubber sealing ball into the air outlet hole 12 by pulling the connecting rope, and then seal venthole 12, can outwards pull pole 3 again this moment, and then take out the inside gas of rectangular plastic bag 1 once more, so reciprocating cycle, until the inside gas of rectangular plastic bag 1 is all taken out, take out the back totally, move T shape slider 10 to the one end of keeping away from venthole 12, first rubber sealing ball seals venthole 13 this moment for the inside sealed state that keeps of rectangular plastic bag 1.
As an embodiment of the invention, the surface of the sliding plate 18, which is contacted with the bottom of the T-shaped chute 9, is movably provided with balls, and the balls are uniformly arranged at the bottom of the sliding plate 18; during operation, the balls at the bottom of the sliding plate 18 can greatly reduce the frictional resistance between the sliding plate 18 and the bottom of the T-shaped sliding chute 9, so that the T-shaped sliding block 10 can slide more smoothly in the T-shaped sliding chute 9.
As an embodiment of the present invention, the bottom end of the spur gear plate 16 is located in a rectangular cavity 17 inside the T-shaped slider 10, and the top end of the spur gear plate 16 extends out of a rectangular slot at the top of the rectangular cavity 17; the bottom of the straight gear plate 16 is fixedly connected with the upper surface of the supporting plate 20; the length of the supporting plate 20 is greater than that of the straight gear plate 16; the upper surfaces of the two ends of the supporting plate 20 are fixedly connected with one end of a push rod 24; the other end of the push rod 24 extends into the columnar groove body 21 and is fixedly connected with the central position of the second piston plate 22; the top end of the columnar groove body 21 is fixedly connected with the inner wall of the top of the rectangular cavity 17; the second piston plate 22 is fixedly connected with the inner wall of the top of the rectangular cavity 17 through a spring; the top of the second piston plate 22 communicates with the interior of the spring compression tube 19 through an air flow passage; when the sliding device works, when the T-shaped sliding block 10 needs to slide, firstly, the T-shaped sliding block 10 needs to be pressed inwards, at this time, the T-shaped sliding block 10 can push the spring compression pipe 19 to separate the straight gear plate 16 from the teeth on the inner wall of the top of the T-shaped sliding chute 9, and then the teeth on the top of the T-shaped sliding chute 9 are not meshed with the straight gear plate 16, at this time, the T-shaped sliding block 10 can be moved inside the T-shaped sliding chute 9, and when the T-shaped sliding block 10 pushes the spring compression pipe 19, the gas inside the spring compression pipe 19 can enter the cylindrical groove body 21 through the airflow channel, and further the second piston plate 22 is pushed to move towards the spring compression pipe 19, at this time, the push rod 24 fixedly connected with the second piston plate 22 can push the supporting plate 20 to move towards the spring compression pipe 19, so that the straight gear plate 16 contracts towards the inside of the rectangular cavity 17, and further, when the spring compression pipe 19 contracts, the straight gear plate 16 contracts, therefore, the spur gear plate 16 can be disengaged from the teeth on the inner wall of the top of the T-shaped chute 9 by only slightly compressing the spring compression tube 19, thereby saving labor.
The specific working process of the invention is as follows:
when the air extracting device works, the opening of the rectangular plastic bag 1 can be directly clamped between the air extracting cylinder 2 and the arc-shaped pressing plate 6, and then the L-shaped inserting rod 5 is pushed outwards, so that the end part of the L-shaped inserting rod 5 is inserted into the rectangular frame 4; the straight surface of the air exhaust cylinder 2 and the straight surface of the arc-shaped pressing plate 6 can tightly press and seal the opening of the rectangular plastic bag 1, and meanwhile, the inner wall of the arc-shaped pressing plate 6 is fixedly provided with an elastic pressing plate 23 through a spring, and the elastic pressing plate 23 can further tightly press the opening of the rectangular plastic bag 1 in the arc-shaped pressing groove 7 on the inner side wall of the air exhaust cylinder 2, so that the opening of the rectangular plastic bag 1 can be tightly pressed, and the opening of the rectangular plastic bag 1 cannot be damaged; in the process of loading the rectangular plastic bag 1 with articles and then sealing, air is inevitably introduced into the rectangular plastic bag 1, so that the volume of the rectangular plastic bag 1 is increased and the rectangular plastic bag is inconvenient to store; the invention can pump the air in the rectangular plastic bag 1 through the air pump 2, when air is required to be pumped, the pulling rod 3 can be pulled outwards, the pulling rod 3 can drive the first piston plate 15 to move outwards, at the moment, the first rubber sealing ball is separated from the outer port of the air pumping hole 13 under the action of the spring fixedly connected with the first rubber sealing ball, meanwhile, the spring can pull the second rubber sealing ball through the connecting rope to block the air outlet hole 12, when the first piston plate 15 moves outwards, the air in the rectangular plastic bag 1 can enter the air pump 2 through the air pumping hole 13, when the air pumped into the air pump 2 from the rectangular plastic bag 1 is required to be exhausted, the T-shaped sliding block 10 in the T-shaped sliding groove 9 can be pressed at the moment, so that the T-shaped sliding block 10 presses the spring compression pipe 19 at the bottom of the T-shaped sliding block 10, and the straight gear plate 16 on the T-shaped sliding block 10 is separated from the teeth on the top inner wall of the T-shaped sliding groove, at this time, the T-shaped sliding block 10 can be moved to a position close to the end of the pulling rod 3 in the T-shaped sliding groove 9 until the second rubber sealing ball is separated from the port of the air outlet hole 12, at this time, the connecting rope fixedly connected with the second rubber sealing ball pulls the spring at the same time, so that the first rubber sealing ball moves towards the direction of the air outlet hole 13, so as to seal the air outlet hole 13, at this time, the pulling rod 3 is pushed towards the rear end of the air pumping cylinder 2, at this time, the gas in the air pumping cylinder 2 is discharged through the air outlet hole 12, then the T-shaped sliding block 10 is pressed and the T-shaped sliding block 10 is stirred towards the rear end of the air pumping cylinder 2, at this time, the pulling rope 8 fixedly connected with the second rubber sealing ball becomes loose, at this time, the spring in the air pumping hole 13 pushes the first rubber sealing ball out of the air pumping hole 13 again, and the spring plugs the second rubber sealing ball into the air outlet hole 12 by pulling the connecting rope, and then seal venthole 12, can outwards pull pole 3 again this moment, and then take out the inside gas of rectangular plastic bag 1 once more, so reciprocating cycle, until the inside gas of rectangular plastic bag 1 is all taken out, take out the back totally, move T shape slider 10 to the one end of keeping away from venthole 12, first rubber sealing ball seals venthole 13 this moment for the inside sealed state that keeps of rectangular plastic bag 1.
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. A packaging material characterized by: the composite material consists of the following raw materials in parts by weight:
20-30 parts of natural rubber emulsion, 40-45 parts of nitrile rubber emulsion, 5-6 parts of phospholipid molecular solution, 3-6 parts of montmorillonite, 1-2 parts of phthalimide sylvite, 0.5-1 part of curing agent, 4-5 parts of sepiolite fiber, 8-10 parts of polyolefin elastic fiber, 0.2-0.5 part of epoxy silane coupling agent, 10-12 parts of rosin water and 1-2 parts of stearic acid.
2. A packaging material as claimed in claim 1, wherein: the curing agent is one or a mixture of more of ethylenediamine, polyethylene polyamine, polypropylene diamine, polybutylene diamine and polybutylene polyamine.
3. A manufacturing method of a packaging material is characterized by comprising the following steps: the method of manufacture is adapted to the packaging material of any one of claims 1-2, the method of manufacture comprising the steps of:
s1, dissolving phthalimide potassium salt in water, stirring for 10-15min at 85-90 ℃, adding montmorillonite into a mixed solution of phthalimide potassium salt and water, then stirring vigorously for 25-35min to form montmorillonite suspension, standing the suspension in S1 for 24-36h at low temperature, controlling the temperature at 15-25 ℃, then carrying out vacuum filtration on the precipitated suspension, drying the filtered montmorillonite, and grinding for later use;
s2, adding stearic acid into absolute ethyl alcohol, continuously stirring for 15-20min after the stearic acid is completely dissolved, then adding the montmorillonite treated in S1 into a mixed solution of the ethyl alcohol and the stearic acid, increasing the rotating speed to 1800-2000r/min after the filler is completely added, then adding an epoxy silane coupling agent, stirring for 30-40min, standing for 24h, then carrying out suction filtration and drying to obtain the modified organic montmorillonite;
s3, pouring the natural rubber emulsion and the nitrile rubber emulsion into a reaction kettle for stirring, wherein the stirring temperature is 100-110 ℃, adding the organic montmorillonite, the rosin water, the sepiolite fiber, the polyolefin elastic fiber and the wollastonite after the surface of the rubber material is smooth, fully stirring for 45-60min, and then preserving heat for 30 min;
s4, sequentially adding the phospholipid molecular solution, the phthalimide potassium salt and the curing agent into the reaction kettle, firstly controlling the stirring device to stir at the speed of 300-;
s5, adding the viscous mixed colloid obtained in the S4 into a double-screw extruder for melt extrusion and granulation, and then carrying out film blowing on the granules through a blow molding machine to form a rectangular plastic bag with an opening at one end, wherein the film blowing temperature is controlled at 115-125 ℃;
s6, connecting the edge of the air extracting cylinder with one side of the opening of the rectangular plastic bag in a hot pressing mode, and fixedly connecting the edge of the air extracting hole of the air extracting cylinder with the rectangular plastic packaging bag through a hot press so that the interior of the air extracting cylinder is communicated with the interior of the rectangular plastic bag through the air extracting hole, and then the packaging bag can be manufactured.
4. A method of making a packaging material as claimed in claim 3, wherein: the packaging bag comprises a rectangular plastic bag (1), an air suction tube (2), a pull rod (3), an arc-shaped pressing plate (6), an air outlet (12) and an air suction hole (13); the air suction cylinder (2) and the arc-shaped pressing plate (6) are integrally spliced into a cylindrical structure, and the length of the arc-shaped pressing plate (6) is smaller than that of the air suction cylinder (2); one outer side surface of the opening of the rectangular plastic bag (1) is adhered to the inner side wall of the air pumping cylinder (2); the opening of the rectangular plastic bag (1) is integrally clamped between the air suction tube (2) and the arc-shaped pressing plate (6); one end of the arc-shaped pressing plate (6) is movably hinged to the inner side face of the air extracting cylinder (2) through a torsion spring, an L-shaped inserting rod (5) is movably arranged on the outer edge of the other end of the arc-shaped pressing plate (6), and the L-shaped inserting rod (5) is movably inserted into a slot in the outer edge of the arc-shaped pressing plate (6); the end part of the L-shaped inserted rod (5) penetrates into the rectangular frame (4), and the rectangular frame (4) is fixedly arranged on the inner side surface of the air suction cylinder (2); an arc-shaped pressure groove (7) is formed in the surface, close to the arc-shaped pressure plate (6), of the air pumping cylinder (2); the inner side surface of the arc-shaped pressing plate (6) is movably provided with an elastic pressing plate (23) through a spring; the elastic pressing plate (23) presses the opening of the rectangular plastic bag (1) tightly in the arc-shaped pressing groove (7); a drawing rod (3) is movably arranged in the rectangular plastic bag (1); one end of the drawing rod (3) extends out of the end part of the air suction cylinder (2); the other end of the drawing rod (3) is fixedly connected with a first piston plate (15); one side of the rear end of the air suction cylinder (2) close to the rectangular plastic bag (1) is provided with an air suction hole (13); the rear end of the air pumping cylinder (2) is provided with an air outlet (12) at a position opposite to the air pumping hole (13); a baffle ring (14) is fixedly arranged on the inner wall of the air pumping cylinder (2) between the air outlet hole (12) and the first piston plate (15); an installation plate is fixedly arranged on the inner wall of the rear end of the air pumping cylinder (2); one surface of the mounting plate, which is close to the air exhaust hole (13), is fixedly connected with one end of a spring, and the other end of the spring penetrates through the air exhaust hole (13) and is fixedly connected with a first rubber sealing ball; the end part of the spring fixedly connected with the first rubber sealing ball is fixedly connected with one end of a connecting rope, the other end of the connecting rope penetrates through the mounting plate and is fixedly connected with the edge of a second rubber sealing ball, the second rubber sealing ball is positioned outside the air pumping cylinder (2), and the edge of the second rubber sealing ball positioned outside the air pumping cylinder (2) is fixedly connected with one end of a pull rope (8); the other end of the pull rope (8) is bolted with a bolting ring (11) fixed on the outer side of the T-shaped sliding block (10); the T-shaped sliding block (10) is positioned in a T-shaped sliding groove (9) at the edge of the curved surface of the air extraction cylinder (2); a straight gear plate (16) is arranged on the upper surface of the T-shaped sliding block (10); the inner wall of the top of the T-shaped sliding chute (9) is provided with teeth matched with the straight gear plate (16); the bottom of the T-shaped sliding block (10) is fixedly provided with a sliding plate (18) through a spring compression pipe (19); and a spring is arranged in the spring compression pipe (19) and fixedly connects the T-shaped sliding block (10) with the sliding plate (18).
5. The method of claim 4, wherein the step of forming the packaging material comprises: the surface of the sliding plate (18) contacting with the bottom of the T-shaped sliding groove (9) is movably provided with balls, and the balls are uniformly arranged at the bottom of the sliding plate (18).
6. The method of claim 4, wherein the step of forming the packaging material comprises: the bottom end of the straight gear plate (16) is positioned in a rectangular cavity (17) in the T-shaped sliding block (10), and the top end of the straight gear plate (16) extends out of a rectangular groove at the top of the rectangular cavity (17); the bottom of the straight gear plate (16) is fixedly connected with the upper surface of the supporting plate (20); the length of the supporting plate (20) is greater than that of the straight gear plate (16); the upper surfaces of the two ends of the supporting plate (20) are fixedly connected with one end of the push rod (24); the other end of the push rod (24) extends into the columnar groove body (21) and is fixedly connected with the center position of the second piston plate (22); the top end of the columnar groove body (21) is fixedly connected with the inner wall of the top of the rectangular cavity (17); the second piston plate (22) is fixedly connected with the inner wall of the top of the rectangular cavity (17) through a spring; the top of the second piston plate (22) communicates with the interior of the spring compression tube (19) through an air flow passage.
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| CN202010726410.XA CN111793257A (en) | 2020-07-25 | 2020-07-25 | Packaging material and manufacturing method thereof |
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| CN202010726410.XA CN111793257A (en) | 2020-07-25 | 2020-07-25 | Packaging material and manufacturing method thereof |
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