CN115635714A - Manufacturing process of food box made of paper-wrapped plastic - Google Patents
Manufacturing process of food box made of paper-wrapped plastic Download PDFInfo
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- CN115635714A CN115635714A CN202211070808.8A CN202211070808A CN115635714A CN 115635714 A CN115635714 A CN 115635714A CN 202211070808 A CN202211070808 A CN 202211070808A CN 115635714 A CN115635714 A CN 115635714A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W90/00—Enabling technologies or technologies with a potential or indirect contribution to greenhouse gas [GHG] emissions mitigation
- Y02W90/10—Bio-packaging, e.g. packing containers made from renewable resources or bio-plastics
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Abstract
The invention discloses a manufacturing process of a paper-covered plastic food box, which comprises the following steps: s1, molding: designing an injection molding die and a punch forming die matched with a product food box by using computer model design software, carrying out simulation on the injection molding die and the punch forming die until simulation data meet production requirements, and manufacturing the injection molding die and the punch forming die by adopting a traditional die making mode, wherein the injection molding die is used for injection molding of plastic raw materials to form a packaging box main body, and the punch forming die is used for punching and bonding degradable packaging paper on the packaging box main body; the food package box integral type shaping that this plastic food package box manufacturing technology produced, the plastic package box after the shaping is holistic thermal-insulated, prevent scalding, antiskid and thermal insulation performance is good, long service life, and the plastic package box that utilizes this technology to produce can degrade automatically, can not cause the pollution to the environment, and environmental protection more, production efficiency is high.
Description
Technical Field
The invention relates to the technical field of plastic food packaging boxes, in particular to a manufacturing process of a paper-wrapped plastic food box.
Background
The plastic box is a cylindrical box-shaped plastic product, such as a heaven and earth cover box, and the like made of PVC/PET/PP/PS and the like. The plastic box has the characteristics of convenience in use, moisture resistance, water resistance, high toughness, strong transportation safety performance, product grade improvement and the like. The life rhythm of modern people is faster, the take-out industry develops rapidly, and the plastic packing box is widely applied.
Common plastic food manufacturing industries mostly adopt an injection molding mode to produce plastic food packages, such as a food plastic package box manufacturing and processing technology with application number being 202010903625.4 and a degradable plastic package box injection molding technology with application number being 202210208566.8, and the produced plastic food package box products are mostly single-layer thin-wall materials, although the production cost is reduced, the overall heat insulation, heat preservation and scald prevention capability of the package box is relatively poor.
The whole heat insulation, heat preservation and scalding prevention capabilities of the packaging box produced by the existing plastic food packaging box manufacturing process are relatively poor, and the comfort in use is poor.
Disclosure of Invention
The invention aims to provide a manufacturing process of a paper-coated plastic food box, and aims to solve the problems that the overall heat insulation, heat preservation and burn-proof capability of a packaging box produced by the existing manufacturing process of the plastic food packaging box in the background technology is relatively poor, and the comfort in use is poor.
Therefore, the invention provides a manufacturing process of a food box made of paper-wrapped plastic, which comprises the following steps:
s1, molding: designing an injection molding die and a punch forming die matched with a product food box by using computer model design software, carrying out simulation on the injection molding die and the punch forming die until simulation data meet production requirements, and manufacturing the injection molding die and the punch forming die by adopting a traditional molding mode, wherein the injection molding die is used for injection molding of plastic raw materials to form a packaging box main body, and the punch forming die is used for punching and bonding degradable packaging paper on the packaging box main body;
s2, preparing materials: the plastic food box is prepared from 60-65 parts of polylactic acid, 5-8 parts of triacetin, 10-12 parts of polybutylene succinate, 1-3 parts of stabilizer, 1-3 parts of initiator, 2-3 parts of chain extender, 3-5 parts of curing agent and 10-15 parts of phase solvent by mass, weighing the prepared components according to corresponding content, and adding the mixed raw materials into a high-speed mixer for heating and mixing;
s3, injection molding: assembling the injection molding mold manufactured in the step S1 on an injection molding machine, checking whether a lining of a material feeding port of a melting material is aligned and sealed with an injection molding hole of the molding mold, observing whether the working position of each part is correct or not by adopting a low-pressure and slow-speed mold closing mode, correcting and debugging until all data run normally, adding the heated and mixed raw materials into the injection molding machine, starting the injection molding machine, and injecting the molten plastic melt into the injection molding mold through the injection molding machine;
s4, cooling and demolding: after the mixed raw materials are injected into an injection molding mould by an injection molding machine, standing, cooling and molding, and after the temperature is reduced to room temperature, ejecting the molded plastic packaging box blank by an ejection system of the injection molding machine;
s5, trimming and cleaning: putting the produced plastic food packaging box blank into a trimmer, trimming the plastic food packaging box blank according to the product requirement, then putting the processed plastic food packaging box into a pool filled with cleaning liquid for soaking and cleaning, taking out the plastic food packaging box blank after cleaning, and air-drying the plastic food packaging box blank;
s6, punch forming: assembling the punch forming die manufactured in the step S1 on a punch, placing the double-layer laminating plastic-coated paper in a die groove of the punch forming die, and punching to form a box support structure with folds;
s7, bonding: coating heat-resistant glue on the inner side wall of the box support structure, adhering and connecting the trimmed and cleaned plastic food packaging box blank by using the glue, and standing for 10-20 minutes after adhesion and fixation to obtain a finished product of the paper-wrapped plastic food box;
s8, quality inspection: randomly sampling the produced paper-wrapped plastic food box, detecting the sampled paper-wrapped plastic food box, and detecting whether crack damage occurs, the adhesion tightness of a box support and a plastic food packaging box blank, the scald-proof capability and the skid-proof performance of the box support, the size and the shape of the packaging box, toxicity tests and the like meet standards;
s9, stacking and sealing: and after the quality inspection is qualified, quantitatively boxing and packaging the produced paper-covered plastic food box, and storing.
Preferably, in the step S2, the stabilizer is calcium stearate, the initiator is an acrylate solvent, the chain extender is an epoxy chain extender, the curing agent is epoxy resin, and the phase solvent is esuntio 5004K.
Preferably, the mixing time of the high-speed mixer in the step S2 is controlled to be 30-40 minutes, and the temperature during mixing is controlled to be 120-150 ℃.
Preferably, in the step S3, before assembling the injection mold, a startup pre-inspection of the injection molding machine is required, whether the extruder main unit, the driving system, the transmission system, the circuit system, the air tightness of the air path system, the tightness of the oil path system, the cooling system, the traction system and the cutting system can normally operate in an idle state or not is detected, whether leakage exists or not is detected, whether parameters of the system operation are in compliance or not is detected, and after the equipment pre-inspection is qualified, the injection mold is assembled.
Preferably, in the step S5, the cleaning solution is prepared by mixing a pasteurizing solution and clean water in a ratio of 1.
Preferably, in the step S1, the injection molding mold and the punch forming mold both include a bottom mold and a mold closing, wherein a molding mold cavity is formed in the bottom mold, the inner side wall of the molding mold cavity is provided with uniformly distributed fold lines, and the top end of the mold closing is provided with an injection hole or a punching hole facing the molding mold cavity.
Preferably, the thickness of the plastic packing box blank is controlled to be 1.8-2 mm, and the thickness of the box support structure is controlled to be 1-1.3 mm.
Preferably, in the step S3, the double-layer plastic-coated film paper can be directly placed in a cavity of an injection mold, after mold closing, a raw material is directly injected into the injection mold by an injection molding machine, and after the raw material is cooled and solidified in the injection mold, the raw material and the double-layer plastic-coated film paper can be bonded into a whole to form a finished product of the paper-coated plastic food box with wrinkles.
The invention provides a manufacturing process of a food box made of paper-wrapped plastic, which has the beneficial effects that:
1. the food packaging box produced by the plastic food packaging box manufacturing process is integrally formed, the formed plastic packaging box is excellent in overall heat insulation, scald prevention, skid resistance and heat preservation performance, good in use adaptability and long in service life;
2. the plastic packaging box produced by the process can be automatically degraded, cannot pollute the environment, is more environment-friendly, and has simple production flow and high production efficiency.
Detailed Description
The technical means of the present invention will be described in detail below with reference to specific examples.
The first embodiment is as follows:
the invention provides a manufacturing process of a paper-covered plastic food box, which comprises the following steps:
s1, molding: designing an injection molding die and a punch forming die which are matched with a product food box by utilizing computer model design software, and performing simulation on the injection molding die and the punch forming die until simulation data meet production requirements, manufacturing the injection molding die and the punch forming die by adopting a traditional die making mode, wherein the injection molding die is used for injection molding of plastic raw materials to form a packaging box main body, the punch forming die is used for punching and bonding degradable packaging paper on the packaging box main body, the injection molding die and the punch forming die both comprise a bottom die and a matched die, wherein a forming die cavity is formed in the bottom die, uniformly distributed fold grains are arranged on the inner side wall of the forming die cavity, and an injection hole or a punching hole which is right opposite to the forming die cavity is formed in the top end of the matched die;
s2, preparing materials: the plastic food box is prepared from 60-65 parts of polylactic acid, 5-8 parts of triacetin, 10-12 parts of polybutylene succinate, 1-3 parts of stabilizer, 1-3 parts of initiator, 2-3 parts of chain extender, 3-5 parts of curing agent and 10-15 parts of phase solvent by weight, the mixed raw materials are added into a high-speed mixer for heating and mixing after weighing the prepared components according to corresponding contents, the mixing duration of the high-speed mixer is controlled to be 30-40 minutes, and the mixing temperature is controlled to be 120-150 ℃;
s3, injection molding: assembling the injection molding die manufactured in the step S1 on an injection molding machine, checking whether a melt material inlet bushing is aligned and sealed with an injection molding hole of the molding die, observing whether the working positions of all parts are correct by adopting a low-pressure and slow-speed die assembly mode, correcting and debugging until all data run normally, adding the heated and mixed raw materials into the injection molding machine, starting the injection molding machine, injecting a molten plastic melt into the injection molding die through the injection molding machine, performing starting pre-inspection on the injection molding machine before assembling the injection molding die, detecting whether an extruder main machine, a driving system, a transmission system, a circuit system, air tightness of an air circuit system, tightness of an oil circuit system, a cooling system, a traction system and a cutting system can run normally under an idle state or not, detecting whether leakage exists or not, checking whether running parameters of the system are in compliance or not, and assembling the injection molding die after the pre-inspection of the equipment is qualified;
s4, cooling and demolding: after the mixed raw materials are injected into an injection molding mould by an injection molding machine, standing, cooling and molding, and after the temperature is reduced to room temperature, ejecting the molded plastic packaging box blank by an ejection system of the injection molding machine;
s5, trimming and cleaning: putting the produced plastic food packaging box blank into a trimmer, trimming the plastic food packaging box blank according to the product requirement, then putting the processed plastic food packaging box into a pool filled with cleaning solution for soaking and cleaning, taking out and air-drying after cleaning, wherein the cleaning solution is prepared by mixing pasteurized liquid and clear water in a ratio of 1;
s6, punch forming: assembling the punch forming die manufactured in the step S1 on a punch, placing the double-layer laminating plastic-coated paper in a die groove of the punch forming die, and punching to form a box support structure with folds;
s7, bonding: coating heat-resistant glue on the inner side wall of the box support structure, adhering and connecting the trimmed and cleaned plastic food packaging box blank by using the glue, and standing for 10-20 minutes after bonding and fixing to obtain a finished product of the paper-covered plastic food box;
s8, quality inspection: randomly sampling the produced paper-wrapped plastic food box, detecting the sampled paper-wrapped plastic food box, and detecting whether crack damage occurs, the adhesion tightness of a box support and a plastic food packaging box blank, the anti-scalding capability and the anti-skid performance of the box support, the size and the shape of the packaging box, toxicity test and the like meet standards, wherein the thickness of the plastic packaging box blank is controlled to be 1.8-2 mm, and the thickness of a box support structure is controlled to be 1-1.3 mm;
s9, stacking and sealing: and after the quality inspection is qualified, quantitatively boxing and packaging the produced paper-covered plastic food box, and storing.
In this example: the paper box that has the fold is increased in the outside of traditional plastic food box and is held in the palm the structure, and the paper box holds in the palm the structure and bonds in the food box outside through thermosetting sizing material, and the plastic packing carton after the shaping is holistic thermal-insulated, prevent scalding, antiskid and thermal insulation performance is good, and the adaptability of use is good, long service life, safe in utilization.
Example two:
the invention provides a manufacturing process of a paper-covered plastic food box, which comprises the following steps:
s1, molding: designing an injection molding die and a punch forming die which are matched with a product food box by utilizing computer model design software, and performing simulation on the injection molding die and the punch forming die until simulation data meet production requirements, manufacturing the injection molding die and the punch forming die by adopting a traditional die making mode, wherein the injection molding die is used for injection molding of plastic raw materials to form a packaging box main body, the punch forming die is used for punching and bonding degradable packaging paper on the packaging box main body, the injection molding die and the punch forming die both comprise a bottom die and a matched die, wherein a forming die cavity is formed in the bottom die, uniformly distributed fold grains are arranged on the inner side wall of the forming die cavity, and an injection hole or a punching hole which is right opposite to the forming die cavity is formed in the top end of the matched die;
s2, preparing materials: the plastic food box is prepared from 60-65 parts of polylactic acid, 5-8 parts of triacetin, 10-12 parts of polybutylene succinate, 1-3 parts of stabilizer, 1-3 parts of initiator, 2-3 parts of chain extender, 3-5 parts of curing agent and 10-15 parts of phase solvent by weight, the mixed raw materials are added into a high-speed mixer for heating and mixing after weighing the prepared components according to corresponding contents, the mixing duration of the high-speed mixer is controlled to be 30-40 minutes, and the mixing temperature is controlled to be 120-150 ℃;
s3, injection molding: the double-layer laminating plastic-coated paper can be directly placed in a die cavity of an injection molding die, after die assembly, production raw materials are directly injected into the injection molding die by an injection molding machine, after the raw materials are cooled and solidified in the injection molding die, the raw materials and the double-layer laminating plastic-coated paper can be bonded into a whole to form a finished product of a paper-coated plastic food box with folds, before the injection molding die is assembled, the injection molding machine is required to be started for pre-inspection, whether the extruder main machine, a driving system, a transmission system, a circuit system, an air circuit system airtightness, an oil circuit system tightness, a cooling system, a traction system and a cutting system can normally operate or not in an idle state is detected, whether leakage exists or not is detected, whether the operating parameters of the system meet the requirements or not is checked, and after the equipment is pre-inspected to be qualified, the injection molding die is assembled;
s4, cooling and demolding: after the mixed raw materials are injected into an injection molding mould by an injection molding machine, standing, cooling and molding, and after the temperature is reduced to room temperature, ejecting the molded plastic packaging box blank by an ejection system of the injection molding machine;
s5, quality inspection: randomly sampling the produced paper-wrapped plastic food boxes, detecting the sampled paper-wrapped plastic food boxes, and detecting whether crack damage occurs, the adhesion tightness of a box support and a plastic food packaging box blank, the anti-scalding capability and the anti-skid performance of the box support, the size and the shape of the packaging box, toxicity tests and the like meet standards;
s6, stacking and sealing: and after the quality inspection is qualified, quantitatively boxing and packaging the produced paper-covered plastic food box, and storing.
In this example: compared with the first embodiment, the first embodiment adopts an integrated molding mode, the double-layer film-coated plastic-coated paper is directly placed in the mold for injection molding, and the glue is solidified and bonded together, so that the step of re-adhering and stamping after the production of the plastic food box is avoided, and the production efficiency of the plastic packaging box can be greatly improved.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (8)
1. A manufacturing process of a food box made of paper-wrapped plastic is characterized by comprising the following steps: the method comprises the following steps:
s1, molding: designing an injection molding die and a punch forming die matched with a product food box by using computer model design software, carrying out simulation on the injection molding die and the punch forming die until simulation data meet production requirements, and manufacturing the injection molding die and the punch forming die by adopting a traditional molding mode, wherein the injection molding die is used for injection molding of plastic raw materials to form a packaging box main body, and the punch forming die is used for punching and bonding degradable packaging paper on the packaging box main body;
s2, preparing materials: the plastic food box is prepared from 60-65 parts of polylactic acid, 5-8 parts of triacetin, 10-12 parts of polybutylene succinate, 1-3 parts of stabilizer, 1-3 parts of initiator, 2-3 parts of chain extender, 3-5 parts of curing agent and 10-15 parts of phase solvent by mass, weighing the prepared components according to corresponding content, and adding the mixed raw materials into a high-speed mixer for heating and mixing;
s3, injection molding: assembling the injection molding mold manufactured in the step S1 on an injection molding machine, checking whether a lining of a material feeding port of a melting material is aligned and sealed with an injection molding hole of the molding mold, observing whether the working position of each part is correct or not by adopting a low-pressure and slow-speed mold closing mode, correcting and debugging until all data run normally, adding the heated and mixed raw materials into the injection molding machine, starting the injection molding machine, and injecting the molten plastic melt into the injection molding mold through the injection molding machine;
s4, cooling and demolding: after the mixed raw materials are injected into an injection molding mould by an injection molding machine, standing, cooling and molding, and after the temperature is reduced to room temperature, ejecting the molded plastic packaging box blank by an ejection system of the injection molding machine;
s5, trimming and cleaning: putting the produced plastic food packaging box blank into a trimmer, trimming the plastic food packaging box blank according to product requirements, then putting the processed plastic food packaging box into a pool filled with cleaning liquid for soaking and cleaning, taking out after cleaning, and air-drying;
s6, punch forming: assembling the punch forming die manufactured in the step S1 on a punch, placing the double-layer laminating plastic-coated paper in a die cavity of the punch forming die, and punching to form a box support structure with folds;
s7, bonding: coating heat-resistant glue on the inner side wall of the box support structure, adhering and connecting the trimmed and cleaned plastic food packaging box blank by using the glue, and standing for 10-20 minutes after adhesion and fixation to obtain a finished product of the paper-wrapped plastic food box;
s8, quality inspection: randomly sampling the produced paper-wrapped plastic food box, detecting the sampled paper-wrapped plastic food box, and detecting whether crack damage occurs, the adhesion tightness of a box support and a plastic food packaging box blank, the scald-proof capability and the skid-proof performance of the box support, the size and the shape of the packaging box, toxicity tests and the like meet standards;
s9, stacking and sealing: and after the quality inspection is qualified, quantitatively boxing and packaging the produced paper-covered plastic food box, and storing.
2. The manufacturing process of the food box made of paper-wrapped plastic according to claim 1, characterized in that: in the step S2, the stabilizer is calcium stearate, the initiator is an acrylate solvent, the chain extender is an epoxy chain extender, the curing agent is epoxy resin, and the phase solvent is eSunBio5004K.
3. The manufacturing process of the food box made of paper-wrapped plastic according to claim 1, characterized in that: and in the step S2, the mixing time of the high-speed mixer is controlled to be 30-40 minutes, and the temperature during mixing is controlled to be 120-150 ℃.
4. The manufacturing process of the food box made of paper-wrapped plastic according to claim 1, characterized in that: and in the step S3, before assembling the injection molding mold, the injection molding machine needs to be subjected to startup pre-inspection, whether the extruder main engine, the driving system, the transmission system, the circuit system, the air tightness of the air path system, the tightness of the oil path system, the cooling system, the traction system and the cutting system can normally run in an idle state or not is detected, whether the running parameters of the system are in compliance or not is detected, and the injection molding mold is assembled after the equipment is qualified through pre-inspection.
5. The manufacturing process of the food box made of paper-wrapped plastic according to claim 1, characterized in that: in the step S5, the cleaning solution is prepared by mixing a pasteurizing solution and clean water according to a ratio of 1.
6. The manufacturing process of the food box made of paper-covered plastic according to claim 1, characterized in that: in the step S1, the injection molding mold and the punch forming mold both comprise a bottom mold and a mold closing, wherein a molding mold cavity is formed in the bottom mold, wrinkle grains which are uniformly distributed are arranged on the inner side wall of the molding mold cavity, and an injection hole or a punching hole which is opposite to the molding mold cavity is formed in the top end of the mold closing.
7. The manufacturing process of the food box made of paper-wrapped plastic according to claim 1, characterized in that: the thickness of the plastic packing box blank is controlled to be 1.8-2 mm, and the thickness of the box support structure is controlled to be 1-1.3 mm.
8. The manufacturing process of the food box made of paper-covered plastic according to claim 1, characterized in that: and S3, directly placing the double-layer coated plastic paper in a die cavity of an injection molding die, directly injecting a production raw material into the injection molding die by using an injection molding machine after die assembly, and bonding the raw material and the double-layer coated plastic paper into a whole after the raw material is cooled and solidified in the injection molding die to form a finished product of the paper-coated plastic food box with wrinkles.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202211070808.8A CN115635714A (en) | 2022-09-02 | 2022-09-02 | Manufacturing process of food box made of paper-wrapped plastic |
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| CN202211070808.8A CN115635714A (en) | 2022-09-02 | 2022-09-02 | Manufacturing process of food box made of paper-wrapped plastic |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117261088A (en) * | 2023-11-10 | 2023-12-22 | 东莞市永运塑胶制品有限公司 | Production process of multifunctional environment-friendly plastic storage box |
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- 2022-09-02 CN CN202211070808.8A patent/CN115635714A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117261088A (en) * | 2023-11-10 | 2023-12-22 | 东莞市永运塑胶制品有限公司 | Production process of multifunctional environment-friendly plastic storage box |
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