CN113771299A - Special mould for forming biodegradable frame of paper container - Google Patents
Special mould for forming biodegradable frame of paper container Download PDFInfo
- Publication number
- CN113771299A CN113771299A CN202111009126.1A CN202111009126A CN113771299A CN 113771299 A CN113771299 A CN 113771299A CN 202111009126 A CN202111009126 A CN 202111009126A CN 113771299 A CN113771299 A CN 113771299A
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- Prior art keywords
- die
- cavity
- biodegradable
- core
- injection molding
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/26—Moulds
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/14—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
- B29C45/14336—Coating a portion of the article, e.g. the edge of the article
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2711/00—Use of natural products or their composites, not provided for in groups B29K2601/00 - B29K2709/00, for preformed parts, e.g. for inserts
- B29K2711/12—Paper, e.g. cardboard
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2031/00—Other particular articles
- B29L2031/712—Containers; Packaging elements or accessories, Packages
- B29L2031/7162—Boxes, cartons, cases
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
A special mould for forming a biodegradable frame of a paper container comprises a lower container biodegradable outer frame forming mould and an upper cover biodegradable inner frame forming mould; the lower container full-biodegradable outer frame forming die comprises an upper die I and a lower die I, wherein the upper die I is provided with a core I and a forming groove I, the lower die I is provided with a cavity I and a groove, and the upper die I and the lower die I are matched to form a full-biodegradable outer frame injection molding cavity; frame forming die in upper cover full biodegradation includes mould II and lower mould II, goes up mould II and is equipped with core II and shaping recess II, and lower mould I is equipped with die cavity II, circular arc groove and guide way, goes up II compound dies of mould and II compound dies formation frames injection molding cavities in the full biodegradation of lower mould. The invention makes the connection between the lower container and the upper cover more compact and improves the sealing effect of the paper tableware by injection molding the biodegradable frame on the lower container and the upper cover. Solves the problem that the forming die suitable for the paper container injection molding biodegradable material frame is lacked in the market at present.
Description
Technical Field
The invention relates to the technical field of paper lunch box processing, in particular to a special mould for forming a biological full-degradable frame of a paper container.
Background
In recent years, plastic pollution is becoming more serious, and plastic restrictions are promulgated in various places, so that disposable plastic products, such as takeaway lunch boxes, beverage cups and the like which are used in large quantities at present, are limited or forbidden to be used. The development of paper product containers and fully biodegradable materials is increasing, the application range is expanding continuously, and the paper product containers and the fully biodegradable materials gradually replace the traditional plastics in the field of disposable tableware.
Although the biodegradable materials (such as PLA) have begun to gradually replace the disposable PP plastic containers in a small amount, due to the high price of the materials and the difficulty of the processing and forming process, the materials are very difficult to be put on the market, especially the materials are not cost-effective. However, the paper lunch box has the following problems in practice although it has a high cost performance: the existing paper lunch box has no good sealing property when being sealed by a cover, and the soup is easy to leak when the dish is slightly shaken under the condition that the soup is contained in the dish. Therefore, in the case of dishes containing soup, there is little preference for using paper containers as lunch boxes. The problem of poor sealing performance can be solved by injection molding the frame on the paper lunch box, but a forming mold suitable for injection molding of the frame made of the fully biodegradable material for the paper container is lacked in the market at present.
Disclosure of Invention
In order to overcome the problems, the invention provides a special mould for forming a fully biodegradable frame of a paper container.
The technical scheme adopted by the invention is as follows: a special mould for forming a biodegradable frame of a paper container comprises a lower container biodegradable outer frame forming mould and an upper cover biodegradable inner frame forming mould;
the lower container full-biodegradable outer frame forming die comprises an upper die I and a lower die I, and the upper die I and the lower die I can be mutually matched or separated; the bottom of the upper die I is provided with a core I protruding downwards, the shape of the core I is matched with the inner shape of the lower container, and a forming groove I used for injection molding of a fully biodegradable outer frame for the outer side of the top end of the lower container is formed around the root of the core I; the top of the lower die I is provided with a cavity I which is sunken downwards, and the shape of the cavity I is matched with the external shape of the lower container; a groove connected with the die cavity I is formed in the periphery of the bottom of the die cavity I, and the groove forms a space allowance I between the lower container and the die cavity I so as to prevent the lower container from being deformed and damaged under pressure when the die is closed; the lower container is sleeved outside the core I, the lower mold I and the upper mold I are matched, the lower container is embedded between the core I and the cavity I, and a full-biodegradable outer frame injection molding cavity is formed among the molding groove I, the top outer wall of the lower container and the top surface of the lower mold I; the upper die I is provided with an injection molding inlet I and a flow channel I communicated with the injection molding inlet I, and the flow channel I is communicated with a biological full-degradable outer frame injection molding cavity;
the upper cover biodegradable inner frame forming die comprises an upper die II and a lower die II, and the upper die II and the lower die II can be mutually matched or separated; the bottom of the upper die II is provided with a downwardly convex core II, the shape of the core II is matched with the inner shape of the upper cover, and the edge of the bottom surface of the core II is provided with a forming groove II; the top of the lower die II is provided with a downward sunken cavity II, and the shape of the cavity II is matched with the external shape of the upper cover; an arc groove is formed in the outer side of the bottom corner of the cavity II, and the arc groove forms a space allowance II between the edge of the upper cover and the bottom corner of the cavity II so as to prevent the edge of the upper cover from being deformed and damaged by pressure when the die is closed; a guide groove is formed in the outer side of the top of the cavity II, and the corner of the upper cover can enter the cavity II through the guide groove during die assembly; the upper cover is connected to the mold core II, the lower mold II moves upwards to be matched with the upper mold II, the upper cover is embedded between the mold core II and the mold cavity II, and a biodegradable inner frame injection molding cavity is formed between the molding groove II and the inner angle of the upper cover; and the upper die II is provided with an injection molding inlet II and a flow channel II communicated with the injection molding inlet II, and the flow channel II is communicated with the injection molding cavity of the inner frame of the full biodegradation.
Further, the height of the core I is at least 1/3 of the height of the lower container, so that the lower container can be tightly sleeved on the core I; after the upper die I and the lower die I are assembled, the groove top of the groove is higher than the bottom surface of the core I, so that the sharp corner at the bottom of the core I in the process of tightly assembling the dies is prevented from damaging the side wall of the lower container.
Further, the upper die I, the lower die I, the upper die II and the lower die II are respectively provided with a blowing device, and the blowing device blows out the formed product.
Furthermore, the flow channel I and the flow channel II are hot runners.
Further, the guide groove is a chute.
The invention has the beneficial effects that:
(1) the fully biodegradable frame is formed by injection molding on the lower container and the upper cover, so that the lower container is more tightly connected with the upper cover, and the sealing effect between the lower container and the upper cover of the paper tableware is improved.
(2) The frame of the paper tableware made by the invention is made of biological full-degradable materials, the lower container and the upper cover are made of paper materials, and the two materials are degradable in nature and respond to the policy of environmental protection.
(3) Solves the problem that the forming die suitable for the paper container injection molding biodegradable material frame is lacked in the market at present.
Drawings
Fig. 1 is a schematic structural diagram of a lower container full biodegradable outer frame forming die in the invention.
FIG. 2 is a schematic view of the structure of an upper mold I and a lower mold I in the present invention.
FIG. 3 is a schematic view showing the upper mold I being closed by moving the lower mold I upward in the present invention.
Fig. 4 is a schematic structural view of a molding die for a biodegradable inner frame of an upper cover in the present invention.
FIG. 5 is a schematic structural view of the upper mold II and the lower mold II in the present invention.
FIG. 6 is a schematic view showing the upper mold II being closed by moving the lower mold II upward in the present invention.
Description of reference numerals: (ii) a 1. An upper die I; 1-1, a core I; 1-2, forming a groove I; 2. a lower die I; 2-1, a cavity I; 2-2, a groove; 3. a lower container; 4. a biodegradable outer frame injection molding cavity; 5. the space allowance I is obtained; 6. a flow channel I; 7. an upper die II; 7-1 and a mold core II; 7-2, forming a groove II; 8. a lower die II; 8-1 and a cavity II; 8-2, arc grooves; 8-3, a guide groove; 9. an upper cover; 10. the space allowance II; 11. a biodegradable inner frame injection molding cavity; 12. And a flow channel II.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are only some embodiments, but not all embodiments, of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that the orientations or positional relationships indicated as the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., appear based on the orientations or positional relationships shown in the drawings only for the convenience of describing the present invention and simplifying the description, but not for indicating or implying that the referred devices or elements must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third," if any, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" should be interpreted broadly, e.g., as being fixed or detachable or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Referring to the attached drawings, a paper container full-biodegradable frame forming die comprises a lower container full-biodegradable outer frame forming die and an upper cover full-biodegradable inner frame forming die; the lower container full-biodegradable outer frame forming die and the upper cover full-biodegradable inner frame forming die can use a horizontal injection machine or a vertical injection machine, wherein a fixed template of the horizontal injection machine is fixed, and a movable template moves left and right; the fixed template of the vertical ejector is fixed at the upper side, and the movable template moves up and down at the lower side; currently, most of the paper meal boxes use horizontal injection molding machine, and in this embodiment, a vertical injection molding machine is used as an example.
The lower container full-biodegradable outer frame forming die comprises an upper die I1 arranged on a fixed die plate of an injection machine and a lower die I2 arranged on a movable die plate of the injection machine, wherein the movable die plate is arranged right below the fixed die plate in a vertically movable manner; the bottom of the upper die I1 is provided with a downward-protruding core I1-1, the shape of the core I1-1 is matched with the inner shape of the lower container 3, and a forming groove I1-2 for injection molding of a fully biodegradable outer frame for the outer side of the top end of the lower container 3 is formed around the root of the core I1-1; the top of the lower die I2 is provided with a downward sunken cavity I2-1, and the shape of the cavity I2-1 is matched with the external shape of the lower container 3; a rectangular groove 2-2 connected with the cavity I2-1 is formed in the periphery of the bottom of the cavity I2-1, and the rectangular groove 2-2 forms a space allowance I5 between the lower container and the cavity I so as to prevent the lower container 3 from being deformed and damaged by pressure when the mold is closed;
the lower container 3 is placed on the core I1-1 by using a manipulator, the lower mold I2 moves upwards to be matched with the upper mold I1, the lower container 3 is embedded between the core I1-1 and the cavity I2-1, and a biological full-degradation outer frame injection molding cavity 4 is formed among the molding groove I1-2, the top end outer wall of the lower container 3 and the top surface of the lower mold I2; the upper die I1 is provided with an injection inlet I and a runner I6 communicated with the injection inlet I, the runner I6 is a hot runner, and the runner I6 is communicated with the biological full-degradable outer frame injection cavity 4; the upper die I1 and the lower die I2 can be respectively provided with a blowing device, and the product is blown out after injection molding.
In this embodiment, the height of the core I1-1 is at least 1/3 of the height of the lower container 3, so that the lower container 3 can be tightly sleeved on the core I1-1; after the upper die I1 and the lower die I2 are closed, the top of the rectangular groove 2-2 is higher than the bottom surface of the mold core I1-1, so that the wall surface of the lower container 3 is prevented from being damaged by the sharp corner at the bottom of the mold core I1-1 in the process of tightly closing the mold.
The upper cover biodegradable inner frame forming die comprises an upper die II 7 arranged on a fixed die plate of an injection machine and a lower die II 8 arranged on a movable die plate of the injection machine, and the movable die plate is arranged under the fixed die plate in a vertically movable manner; the bottom of the upper die II 7 is provided with a downwardly convex core II 7-1, the shape of the core II 7-1 is matched with the inner shape of the upper cover 9, and the bottom edge of the core II 7-1 is provided with a forming groove II 7-2; the top of the lower die II 8 is provided with a downward sunken cavity II 8-1, and the shape of the cavity II 8-1 is matched with the external shape of the upper cover 9; an arc groove 8-2 is formed in the outer side of the bottom corner of the cavity II 8-1, and the arc groove 8-2 forms a space allowance II 10 between the corner of the upper cover 9 and the bottom corner of the cavity II 8-1, so that the corner of the upper cover 9 is prevented from being deformed and damaged by pressure during die assembly; a guide groove 8-3 is formed in the outer side of the top of the die cavity II 8-1, the guide groove 8-3 is a chute, and the edge angle of the upper cover can enter the die cavity II 8-1 through the guide groove 8-3 during die assembly;
the upper cover is placed on the mold core II through a manipulator, the lower mold II moves upwards to be matched with the upper mold II, the upper cover is embedded between the mold core II and the mold cavity II, and a biodegradable inner frame injection molding cavity 11 is formed between the molding groove II and the inner angle of the upper cover; and the upper die II is provided with an injection molding inlet II and a runner II 12 communicated with the injection molding inlet II, the runner II 12 is a hot runner, and the runner II 12 is communicated with the biodegradable inner frame injection molding cavity 11. And the upper die II and the lower die II can be respectively provided with a blowing device for blowing out the product after injection molding.
The embodiments described in this specification are merely illustrative of implementations of the inventive concept and the scope of the present invention should not be considered limited to the specific forms set forth in the embodiments but rather by the equivalents thereof as would be known to those skilled in the art based on the teachings herein.
Claims (5)
1. The utility model provides a paper container biodegradable frame shaping special mould which characterized in that: comprises a lower container full biodegradable outer frame forming die and an upper cover full biodegradable inner frame forming die;
the lower container full-biodegradable outer frame forming die comprises an upper die I and a lower die I, and the upper die I and the lower die I can be mutually matched or separated; the bottom of the upper die I is provided with a downwardly convex core I, the shape of the core I is matched with the inner shape of the lower container, and a forming groove I for injection molding of a fully biodegradable outer frame for the outer side of the top end of the lower container is formed around the root of the core I; the top of the lower die I is provided with a cavity I which is sunken downwards, and the shape of the cavity I is matched with the external shape of the lower container; a groove connected with the cavity I is formed in the periphery of the bottom of the cavity I, and the groove forms a space allowance I between the lower container and the cavity I so as to prevent the lower container from being deformed and damaged by pressure during mold closing; the lower container is sleeved outside the core I, the lower mold I and the upper mold I are matched, the lower container is embedded between the core I and the cavity I, and a full-biodegradable outer frame injection molding cavity is formed among the molding groove I, the top outer wall of the lower container and the top surface of the lower mold I; the upper die I is provided with an injection molding inlet I and a flow channel I communicated with the injection molding inlet I, and the flow channel I is communicated with a full-biodegradable outer frame injection molding cavity;
the upper cover biodegradable inner frame forming die comprises an upper die II and a lower die II, and the upper die II and the lower die II can be mutually matched or separated; the bottom of the upper die II is provided with a downwardly convex core II, the shape of the core II is matched with the inner shape of the upper cover, and the edge of the bottom surface of the core II is provided with a forming groove II; the top of the lower die II is provided with a downward sunken cavity II, and the shape of the cavity II is matched with the external shape of the upper cover; an arc groove is formed in the outer side of the bottom corner of the cavity II, and the arc groove forms a space allowance II between the edge of the upper cover and the bottom corner of the cavity II so as to prevent the edge of the upper cover from being deformed and damaged by pressure when the die is closed; a guide groove is formed in the outer side of the top of the cavity II, and the edge of the upper cover can enter the cavity II through the guide groove during die assembly; the upper cover is connected to the mold core II, the lower mold II and the upper mold II are assembled, the upper cover is embedded between the mold core II and the mold cavity II, and a biodegradable inner frame injection molding cavity is formed between the molding groove II and the inner angle of the upper cover; and the upper die II is provided with an injection molding inlet II and a flow channel II communicated with the injection molding inlet II, and the flow channel II is communicated with the injection molding cavity of the inner frame of the full biodegradation.
2. The special mold for molding the biodegradable frame of the paper container as claimed in claim 1, wherein: the height of the core I is at least 1/3 of the height of the lower container, so that the lower container can be tightly sleeved on the core I; after the upper die I and the lower die I are assembled, the groove top of the groove is higher than the bottom surface of the core I, so that the damage to the side wall of the lower container caused by the sharp corner at the bottom of the core I in the process of tightly assembling the dies is prevented.
3. The special mold for molding the biodegradable frame of the paper container as claimed in claim 1, wherein: and the upper die I, the lower die I, the upper die II and the lower die II are respectively provided with a blowing device, and the blowing devices blow out the formed product.
4. The special mold for molding the biodegradable frame of the paper container as claimed in claim 1, wherein: the flow channel I and the flow channel II are hot runners.
5. The special mold for molding the biodegradable frame of the paper container as claimed in claim 1, wherein: the guide groove is a chute.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111009126.1A CN113771299A (en) | 2021-08-31 | 2021-08-31 | Special mould for forming biodegradable frame of paper container |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111009126.1A CN113771299A (en) | 2021-08-31 | 2021-08-31 | Special mould for forming biodegradable frame of paper container |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113771299A true CN113771299A (en) | 2021-12-10 |
Family
ID=78840080
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111009126.1A Withdrawn CN113771299A (en) | 2021-08-31 | 2021-08-31 | Special mould for forming biodegradable frame of paper container |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113771299A (en) |
Citations (10)
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| US4149838A (en) * | 1973-06-12 | 1979-04-17 | Airfix Industries Limited | Production of composite elements |
| JP2000061987A (en) * | 1998-08-20 | 2000-02-29 | Fujikura Rubber Ltd | Mold structure of composite molded product |
| JP2006110889A (en) * | 2004-10-15 | 2006-04-27 | Toyota Industries Corp | Insert molding method, insert component, and insert molding |
| US20060226158A1 (en) * | 2003-02-12 | 2006-10-12 | Britton Charles J | Container, method and apparatus for making the same |
| CN101918204A (en) * | 2007-12-12 | 2010-12-15 | 斯托拉恩索公司 | A method for forming a package and a package |
| CN101918191A (en) * | 2008-08-12 | 2010-12-15 | 斯塔诺阿埃索澳吉有限公司 | Mould system for manufacturing a container |
| CN103128920A (en) * | 2011-11-30 | 2013-06-05 | 大连永太精密工业有限公司 | Insert molding die |
| CN103391883A (en) * | 2011-02-23 | 2013-11-13 | 斯托拉恩索公司 | Package, method for forming a package and a moulding tool |
| KR20160130676A (en) * | 2015-05-04 | 2016-11-14 | 에코그린 (주) | Two kinds of food containers made of a material and a method of manufacturing the same |
| CN109927238A (en) * | 2018-12-21 | 2019-06-25 | 湖南万容纸塑包装有限公司 | A kind of preparation method of environment-protective cup |
-
2021
- 2021-08-31 CN CN202111009126.1A patent/CN113771299A/en not_active Withdrawn
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4149838A (en) * | 1973-06-12 | 1979-04-17 | Airfix Industries Limited | Production of composite elements |
| JP2000061987A (en) * | 1998-08-20 | 2000-02-29 | Fujikura Rubber Ltd | Mold structure of composite molded product |
| US20060226158A1 (en) * | 2003-02-12 | 2006-10-12 | Britton Charles J | Container, method and apparatus for making the same |
| JP2006110889A (en) * | 2004-10-15 | 2006-04-27 | Toyota Industries Corp | Insert molding method, insert component, and insert molding |
| CN101918204A (en) * | 2007-12-12 | 2010-12-15 | 斯托拉恩索公司 | A method for forming a package and a package |
| CN101918191A (en) * | 2008-08-12 | 2010-12-15 | 斯塔诺阿埃索澳吉有限公司 | Mould system for manufacturing a container |
| CN103391883A (en) * | 2011-02-23 | 2013-11-13 | 斯托拉恩索公司 | Package, method for forming a package and a moulding tool |
| CN103128920A (en) * | 2011-11-30 | 2013-06-05 | 大连永太精密工业有限公司 | Insert molding die |
| KR20160130676A (en) * | 2015-05-04 | 2016-11-14 | 에코그린 (주) | Two kinds of food containers made of a material and a method of manufacturing the same |
| CN109927238A (en) * | 2018-12-21 | 2019-06-25 | 湖南万容纸塑包装有限公司 | A kind of preparation method of environment-protective cup |
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| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20211210 |
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| WW01 | Invention patent application withdrawn after publication |