CN113580465A - Novel shell machining process - Google Patents

Novel shell machining process Download PDF

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Publication number
CN113580465A
CN113580465A CN202110592019.XA CN202110592019A CN113580465A CN 113580465 A CN113580465 A CN 113580465A CN 202110592019 A CN202110592019 A CN 202110592019A CN 113580465 A CN113580465 A CN 113580465A
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China
Prior art keywords
shell
parts
mold
processing technology
organic fiber
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CN202110592019.XA
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Chinese (zh)
Inventor
任湛初
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Guang Zhou Aoweila Luggage Co ltd
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Guang Zhou Aoweila Luggage Co ltd
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Priority to CN202110592019.XA priority Critical patent/CN113580465A/en
Publication of CN113580465A publication Critical patent/CN113580465A/en
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C44/00Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
    • B29C44/34Auxiliary operations
    • B29C44/60Measuring, controlling or regulating
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C44/00Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
    • B29C44/34Auxiliary operations
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C44/00Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
    • B29C44/34Auxiliary operations
    • B29C44/3415Heating or cooling
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C44/00Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
    • B29C44/34Auxiliary operations
    • B29C44/56After-treatment of articles, e.g. for altering the shape
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08JWORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J9/00Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
    • C08J9/04Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent
    • C08J9/06Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a chemical blowing agent
    • C08J9/10Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a chemical blowing agent developing nitrogen, the blowing agent being a compound containing a nitrogen-to-nitrogen bond
    • C08J9/102Azo-compounds
    • C08J9/103Azodicarbonamide
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08JWORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2203/00Foams characterized by the expanding agent
    • C08J2203/04N2 releasing, ex azodicarbonamide or nitroso compound
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08JWORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2397/00Characterised by the use of lignin-containing materials
    • C08J2397/02Lignocellulosic material, e.g. wood, straw or bagasse
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08JWORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2467/00Characterised by the use of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Derivatives of such polymers
    • C08J2467/06Unsaturated polyesters
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08JWORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2497/00Characterised by the use of lignin-containing materials
    • C08J2497/02Lignocellulosic material, e.g. wood, straw or bagasse

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Chemical & Material Sciences (AREA)
  • Materials Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Processing Of Solid Wastes (AREA)

Abstract

A novel shell processing technology comprises the following steps that raw materials of a shell comprise 60-80 parts of organic fiber, 20-30 parts of unsaturated resin, 15-25 parts of curing agent and 5-10 parts of foaming agent; the processing technology comprises the following steps: (1) adding the organic fiber material into a crusher to be crushed; (2) uniformly mixing unsaturated resin, a foaming agent, a curing agent and the crushed organic fiber to form a mixed material; (3) adding the mixed material into a trunk mold, closing the mold, heating the mold to 190-310 ℃, and then stopping heating; (4) and after 2-4 min, cooling the mold, cooling and molding the mixed material in the mold to form a shell, and then demolding the shell. By adopting the technical scheme, the shell has the advantages of environmental protection, light material, high strength and renewable utilization.

Description

Novel shell machining process
Technical Field
The invention relates to the technical field of shell production processes, in particular to a novel shell machining process.
Background
The existing hard shell of the trunk is usually made of ABS or PC materials, and after the trunk body is used, the waste shells of the ABS and the PC are difficult to treat, which causes environmental pollution, so that improvement is needed.
Disclosure of Invention
The invention aims to provide a novel shell processing technology, which utilizes organic fiber as a raw material and adopts a special forming technology, and the shell material is environment-friendly and can be recycled, and in order to achieve the purpose, the invention adopts the following technical scheme:
a novel shell processing technology comprises the following raw materials, by weight, 60-80 parts of an organic fiber, 20-30 parts of unsaturated resin, 15-25 parts of a curing agent and 5-10 parts of a foaming agent; the processing technology comprises the following steps: (1) adding the organic fiber material into a crusher to be crushed; (2) uniformly mixing unsaturated resin, a foaming agent, a curing agent and the crushed organic fiber to form a mixed material; (3) adding the mixed material into a trunk mold, closing the mold, heating the mold to 190-310 ℃, and then stopping heating; and (4) after 2-4 min, cooling the mold, cooling and molding the mixed material in the mold to form a shell, and then demolding the shell.
Further, the method also comprises the following steps: (5) sterilizing and polishing the surface of the shell by steam; and (6) coloring the shell.
Further, the organic fiber matter comprises one or more of rice straw, corn stalk, weed, coconut leaf, sorghum stalk, wood chip, soybean stalk, rape stalk, peanut shell and tea oil fruit shell.
Further, the organic fiber material comprises, by weight, 20-30 parts of rice straws, 20-30 parts of corn straws, 10-20 parts of weeds and 10-20 parts of coconut leaves.
Further, the unsaturated resin is DC191 unsaturated polyester resin.
Further, the blowing agent comprises an ADC blowing agent.
Further, the curing agent is a T31 curing agent.
Further, in the step (3), a heat conduction groove is formed in the mold, heat conduction oil is added into the heat conduction groove to heat the mold, and when the temperature is raised to 190-310 ℃, the heat conduction oil inlet is closed; the method for cooling the mold in the step (4) comprises the following steps: cooling water is injected into the heat conducting groove to cool the heat conducting groove, or air is introduced into the heat conducting groove to cool the heat conducting groove by wind.
Further, after the finished shell is smashed, the shell is recycled through the steps (2) to (4).
Further, the shell is a case shell of the luggage case.
By adopting the technical scheme, the shell made of the organic fiber and the special processing technology has the advantages of environmental protection, light material, high strength and renewable utilization, and can effectively solve the problem of difficulty in processing shell waste of the traditional ABS and PC material luggage cases.
Detailed Description
The present invention will be described with reference to specific examples.
A novel shell processing technology comprises the following raw materials of 60-80 parts of organic fiber, 20-30 parts of unsaturated resin, 15-25 parts of curing agent and 5-10 parts of foaming agent.
The organic fiber can be selected from one or more of rice straw, corn stalk, weed, coconut leaf, sorghum stalk, wood flour, soybean stalk, rape stalk, peanut shell, and tea oil fruit shell. In the embodiment, the organic fiber material comprises 20-30 parts of rice straws, 20-30 parts of corn straws, 10-20 parts of weeds and 10-20 parts of coconut leaves, the unsaturated resin is DC191 unsaturated polyester resin, the foaming agent comprises an ADC foaming agent, and the curing agent is a T31 curing agent.
The processing technology comprises the following steps:
(1) airing the organic fiber, and adding the aired organic fiber into a crusher to be crushed to 2-5 mm;
(2) uniformly mixing unsaturated resin, foaming agent, curing agent and crushed organic fiber material by a stirrer to form a mixed material;
(3) adding the mixed material into a trunk mold, closing the mold, heating the mold and heating the mold to 190-310 ℃, wherein a heat conduction groove is formed in the mold, heat conduction oil is added into the heat conduction groove to heat the mold, and when the temperature is increased to 190-310 ℃, a heat conduction oil inlet is closed to stop heating; heating the unsaturated resin, the foaming agent and the curing agent in the mould to generate physical change, so that the unsaturated resin is heated to become independent resin glue and mutually melted with the organic fiber;
(4) after 2min to 4min, cooling the die, wherein the method for cooling the die comprises the following steps: injecting cooling water into the heat conducting groove for water cooling, or ventilating air into the heat conducting groove for air cooling, cooling and molding the mixed material in the mold to form a shell, and then demolding the shell;
(5) the surface of the shell is disinfected and polished by steam at 100 ℃, so that the smoothness of the surface of the shell is improved;
(6) and finally, coloring the shell according to the requirement.
In step (3), other heating methods can also be used, such as steam heating, inverted heating or heating in a stove (non-open fire). Similarly, the cooling method may be a water cooling method, in addition to the air cooling method.
Regarding the recycling of the shell material, after the finished shell is used, the finished shell is smashed, and then the shell is recycled through the steps (2) to (6).
In the invention, the shell is not limited to the shell of a trunk, and the improved shell is also suitable for automobile shells, electric appliance shells, furniture or stationery and the like.
One more embodiment is listed below:
the thickness of the molded shell is 3mm, and the raw materials of the shell comprise 70 parts of organic fiber, 25 parts of unsaturated resin, 20 parts of curing agent and 8 parts of foaming agent.
The organic fiber matter comprises 30 parts of rice straws, 30 parts of corn straws, 15 parts of weeds and 20 parts of coconut leaves, the unsaturated resin is DC191 unsaturated polyester resin, the foaming agent comprises ADC foaming agent, and the curing agent is T31 curing agent.
The processing technology comprises the following steps:
(1) airing the organic fiber, and adding the aired organic fiber into a crusher to be crushed to 2-5 mm;
(2) uniformly mixing unsaturated resin, foaming agent, curing agent and crushed organic fiber material by a stirrer to form a mixed material;
(3) adding the mixed material into a trunk mold, closing the mold, heating the mold and heating the mold to about 200-230 ℃, wherein a heat conduction groove is formed in the mold, heating the mold by adding heat conduction oil into the heat conduction groove, and closing a heat conduction oil inlet to stop heating when the temperature is raised to about 200-230 ℃; heating the unsaturated resin, the foaming agent and the curing agent in the mould to generate physical change, so that the unsaturated resin is heated to become independent resin glue and mutually melted with the organic fiber;
(4) after 2min30s, cooling the mold by the following method: injecting cooling water into the heat conducting groove for water cooling, or ventilating air into the heat conducting groove for air cooling, cooling and molding the mixed material in the mold to form a shell, and then demolding the shell;
(5) the surface of the shell is disinfected and polished by steam at 100 ℃, so that the smoothness of the surface of the shell is improved;
(6) and finally, coloring the shell according to the requirement.
The strength test result of the shell made of the materials and the process is as follows:
and (4) testing standard: QB/T2918-2007;
testing equipment: an impact testing machine;
the test method comprises the following steps: the weight with a predetermined weight is adjusted to a predetermined height so as to freely fall and impact the surface of the box, and the quality is determined according to the degree of damage.
Figure RE-GDA0003245695810000051
Figure RE-GDA0003245695810000061
According to the test results, the shell made of the organic fiber material meets the strength requirement of the trunk shell.
Synthesize, the casing that adopts organic fibre thing and special processing technology to make has environmental protection, the light and graceful, the high and renewable advantage of intensity of material, can effectively solve traditional ABS, the difficult problem of handling of PC material suitcase waste material.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the present invention, as it will be apparent to those skilled in the art that various modifications, combinations and variations can be made in the present invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the scope of the claims of the present invention.

Claims (10)

1. The processing technology of the novel shell is characterized in that: the shell comprises the following raw materials, by weight, 60-80 parts of organic fiber, 20-30 parts of unsaturated resin, 15-25 parts of curing agent and 5-10 parts of foaming agent;
the processing technology comprises the following steps:
(1) adding the organic fiber material into a crusher to be crushed;
(2) uniformly mixing unsaturated resin, a foaming agent, a curing agent and the crushed organic fiber to form a mixed material;
(3) adding the mixed material into a draw-bar box mold, closing the mold, heating the mold to 190-310 ℃, and then stopping heating;
(4) and after 2-4 min, cooling the mold, cooling and molding the mixed material in the mold to form a shell, and then demolding the shell.
2. The processing technology of the novel shell according to claim 1, characterized in that: further comprising the steps of: (5) sterilizing and polishing the surface of the shell by steam; (6) the shell is colored.
3. The processing technology of the novel shell according to claim 1, characterized in that: the organic fiber matter comprises one or more of rice straw, corn stalk, weed, coconut leaf, sorghum stalk, wood chip, soybean stalk, rape stalk, peanut shell and tea oil fruit shell.
4. The processing technology of the novel shell according to claim 1, characterized in that: the organic fiber material comprises, by weight, 20-30 parts of rice straws, 20-30 parts of corn straws, 10-20 parts of weeds and 10-20 parts of coconut leaves.
5. The processing technology of the novel shell according to claim 1, characterized in that: the unsaturated resin is DC191 unsaturated polyester resin.
6. The processing technology of the novel shell according to claim 1, characterized in that: the blowing agent comprises an ADC blowing agent.
7. The processing technology of the novel shell according to claim 1, characterized in that: the curing agent is T31 curing agent.
8. The processing technology of the novel shell according to claim 1, characterized in that: in the step (3), a heat conduction groove is arranged in the die, heat conduction oil is added into the heat conduction groove to heat the die, and when the temperature is raised to 190-310 ℃, a heat conduction oil inlet is closed;
the method for cooling the mold in the step (4) comprises the following steps: cooling water is injected into the heat conducting groove to cool the heat conducting groove, or air is introduced into the heat conducting groove to cool the heat conducting groove by wind.
9. The process for manufacturing a new shell according to any one of claims 1 to 8, wherein: and (4) after the finished shell is smashed, realizing the recycling of the shell through the steps (2) to (4).
10. The processing technology of the novel shell according to claim 1, characterized in that: the shell is a case shell of the luggage case.
CN202110592019.XA 2021-05-28 2021-05-28 Novel shell machining process Pending CN113580465A (en)

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Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2354731Y (en) * 1998-09-03 1999-12-22 张国扬 Improvement of foaming mould
CN101219552A (en) * 2007-01-12 2008-07-16 四川省三台县固锐实业有限责任公司 Method for producing holding tray with fibre material
CN102219919A (en) * 2011-03-29 2011-10-19 中山市中健包装有限公司 Manufacturing method of vegetable fiber foam material
CN102352115A (en) * 2011-07-07 2012-02-15 中山市中健包装有限公司 Manufacturing method of plant fiber and plant powder foam material
CN102471587A (en) * 2009-08-13 2012-05-23 巴斯夫欧洲公司 Light lignocellulosic materials having good mechanical properties
CN103044702A (en) * 2011-10-11 2013-04-17 成都泰宜鑫建材有限公司 Method of producing foaming plastic from plant materials
CN104893336A (en) * 2015-06-24 2015-09-09 芜湖市晨曦新型建材科技有限公司 Wood-plastic composite and preparation method thereof
US20190071550A1 (en) * 2017-09-05 2019-03-07 Rochester Institute Of Technology Formation and Properties of Cellular Foam Fibrous Material

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2354731Y (en) * 1998-09-03 1999-12-22 张国扬 Improvement of foaming mould
CN101219552A (en) * 2007-01-12 2008-07-16 四川省三台县固锐实业有限责任公司 Method for producing holding tray with fibre material
CN102471587A (en) * 2009-08-13 2012-05-23 巴斯夫欧洲公司 Light lignocellulosic materials having good mechanical properties
CN102219919A (en) * 2011-03-29 2011-10-19 中山市中健包装有限公司 Manufacturing method of vegetable fiber foam material
CN102352115A (en) * 2011-07-07 2012-02-15 中山市中健包装有限公司 Manufacturing method of plant fiber and plant powder foam material
CN103044702A (en) * 2011-10-11 2013-04-17 成都泰宜鑫建材有限公司 Method of producing foaming plastic from plant materials
CN104893336A (en) * 2015-06-24 2015-09-09 芜湖市晨曦新型建材科技有限公司 Wood-plastic composite and preparation method thereof
US20190071550A1 (en) * 2017-09-05 2019-03-07 Rochester Institute Of Technology Formation and Properties of Cellular Foam Fibrous Material

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
中国包装技术协会, 北京理工大学出版社 *

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