CN111590855A - Full-biodegradable 5-layer separation mold - Google Patents
Full-biodegradable 5-layer separation mold Download PDFInfo
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- CN111590855A CN111590855A CN202010538731.7A CN202010538731A CN111590855A CN 111590855 A CN111590855 A CN 111590855A CN 202010538731 A CN202010538731 A CN 202010538731A CN 111590855 A CN111590855 A CN 111590855A
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- Prior art keywords
- head
- die
- mold
- die head
- layer
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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
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/16—Articles comprising two or more components, e.g. co-extruded layers
- B29C48/18—Articles comprising two or more components, e.g. co-extruded layers the components being layers
- B29C48/21—Articles comprising two or more components, e.g. co-extruded layers the components being layers the layers being joined at their surfaces
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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
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
- B29C48/07—Flat, e.g. panels
- B29C48/08—Flat, e.g. panels flexible, e.g. films
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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
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/30—Extrusion nozzles or dies
- B29C48/305—Extrusion nozzles or dies having a wide opening, e.g. for forming sheets
- B29C48/307—Extrusion nozzles or dies having a wide opening, e.g. for forming sheets specially adapted for bringing together components, e.g. melts within the die
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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
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
- B29C48/49—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using two or more extruders to feed one die or nozzle
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
Abstract
The invention relates to the technical field of plastic film production equipment, and discloses a fully biodegradable 5-layer separation die, which comprises a die body, wherein a vertical die core is arranged at the upper end of the die body, a horizontal bottom plate is arranged at the lower end of the die body, the die body is integrally of an inverted T-shaped structure, a first die head, a second die head, a third die head, a fourth die head and a fifth die head are sequentially sleeved on the die core from top to bottom, concave countersunk holes are respectively arranged on the first die head, the second die head, the third die head, the fourth die head and the fifth die head, the concave countersunk holes are communicated with a feeding runner, the first die head, the second die head, the fourth die head and the fifth die head are identical in structure, the first die head comprises a plane runner layer and a spiral body, the die can produce conventional raw materials and can also use biodegradable raw materials, the die produces 5-layer co-extrusion degradable film, the problems that the single-layer degradable film is difficult to process and low in strength are solved.
Description
Technical Field
The invention relates to the technical field of plastic film production equipment, in particular to a fully biodegradable 5-layer barrier mold.
Background
The plastic package in the world has great degradation difficulty and white pollution, and has no substitute. At present, blown films are all refined by chemical petroleum. The disadvantages are mainly: 1. crude oil resources are wasted; 2. difficult to degrade; 3. the air is easily polluted after the combustion.
The biodegradable raw materials taking soybean, corn and flour as main materials are developed in the trend of later packaging. However, if the biodegradable raw material is used only, the processing is difficult, the raw material has high requirements on equipment, and the 5-layer film is a film with a wider application range. Through repeated tests, the invention provides the co-extrusion film blowing mold which takes the biodegradable raw materials as the main raw materials, and blown film packages can be completely degraded, thereby achieving the requirements of environmental protection and energy reduction and meeting the packaging requirements.
Disclosure of Invention
The invention aims to solve the defects in the prior art and provides a fully biodegradable 5-layer barrier mold.
In order to achieve the purpose, the invention adopts the following technical scheme:
a fully biodegradable 5-layer separation die comprises a die body, wherein a vertical die core is arranged at the upper end of the die body, a horizontal bottom plate is arranged at the lower end of the die body, the die body is integrally of an inverted T-shaped structure, a first die head, a second die head, a third die head, a fourth die head and a fifth die head are sequentially sleeved on the die core from top to bottom, concave countersunk holes are formed in the first die head, the second die head, the third die head, the fourth die head and the fifth die head and communicated with a feeding runner, the first die head, the second die head, the fourth die head and the fifth die head are identical in structure, the first die head comprises a plane runner layer and a spiral body, the inlet end of the spiral body is concentrically matched with the outlet end of the plane runner layer, the third die head is of an integrated structure, the plane runner layer of the first die head is superposed on the upper end of the spiral body of the second die head, the plane flow channel layer of the second die head is superposed at the upper end of the third die head, the third die head is superposed at the upper end of the spiral body of the fourth die head, the plane flow channel layer of the fourth die head is superposed at the upper end of the fifth die head, the plane flow channel layer of the fifth die head is superposed at the upper end of the die body bottom plate, a taper gap is formed between the adjacent die heads, the upper end of the die core is connected with a die opening through threads, the upper end of the first die head is also fixedly provided with a die cover, the die cover is positioned at the outer side of the die opening, and a forming cavity is arranged between the die cover and the die opening.
Preferably, the planar flow channel layer is provided with a planar flow channel, the planar flow channel of the planar flow channel layer is subjected to three-time flow splitting, the main feeding flow channel flows into two circular arc flow channels through the end part of one circular arc flow channel, and then flows into four circular arc flow channels from the end parts of the two circular arc flow channels, and the end parts of the four circular arc flow channels form eight flow splitting ports.
Preferably, the tapered surfaces of the screws of the first die head and the fourth die head are provided with a circumferential array of thread runners.
Preferably, the conical surfaces of the spiral bodies of the second die head and the fifth die head are provided with central spiral flow passages.
Preferably, the lower end of the third die head is circular, the upper end of the third die head is spiral, and a conical surface at the upper end of the third die head is provided with a branched spiral flow channel.
Preferably, the PE raw material for the heat-seal layer is added into the first die head, the biodegradable raw material is added into the second die head, the EVA-vinyl acetate copolymer is added into the third die head, the biodegradable raw material is added into the fourth die head, and the PE and the degradable master batch are added into the fifth die head.
The invention has the beneficial effects that:
1. the mould can be used for producing conventional raw materials and can also be used for producing biodegradable raw materials.
2. The mold is used for producing 5 layers of co-extrusion barrier degradable films, and the problems that a single-layer degradable film is difficult to process and low in strength are solved.
3. The internal structure of the die is simplified, the raw materials are not left, the flow channel is free of dead angles, and the raw materials are not easy to decompose.
4. The die can be used for producing raw materials with large temperature difference.
Drawings
FIG. 1 is a schematic structural view of a fully biodegradable 5-layer barrier mold according to the present invention;
FIG. 2 is a schematic structural view of a planar flow channel of a fully biodegradable 5-layer blocking mold according to the present invention;
FIG. 3 is a schematic structural view of a circumferential array thread flow channel of a fully biodegradable 5-layer barrier mold according to the present invention;
FIG. 4 is a schematic structural view of a branched spiral flow channel of a fully biodegradable 5-layer blocking mold according to the present invention;
fig. 5 is a schematic structural view of a central spiral flow channel of a fully biodegradable 5-layer blocking mold according to the present invention.
In the figure: the die comprises a die opening 1, a die cover 2, a first die head 3, a second die head 4, a third die head 5, a fourth die head 6, a fifth die head 7, a die body 8, a plane runner 9, a circumferential array thread runner 10, a branched spiral runner 11 and a central spiral runner 12.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
Referring to fig. 1-5, a fully biodegradable 5-layer blocking mold comprises a mold body 8, wherein a vertical mold core is arranged at the upper end of the mold body 8, a horizontal bottom plate is arranged at the lower end of the mold body 8, the mold body 8 is integrally of an inverted T-shaped structure, a first mold head 3, a second mold head 4, a third mold head 5, a fourth mold head 6 and a fifth mold head 7 are sequentially sleeved on the mold core from top to bottom, concave countersunk holes are respectively arranged on the first mold head 3, the second mold head 4, the third mold head 5, the fourth mold head 6 and the fifth mold head 7 and communicated with a feeding runner, the first mold head 3, the second mold head 4, the fourth mold head 6 and the fifth mold head 7 are identical in structure, the first mold head 3 comprises a plane runner layer and a spiral body, the inlet end of the spiral body is concentrically matched with the outlet end of the plane runner layer, the third mold head 5 is of an integrated structure, the plane flow channel layer of the first die head 3 is superposed on the upper end of the spiral body of the second die head 4, the plane flow channel layer of the second die head 4 is superposed on the upper end of the third die head 5, the third die head 5 is superposed on the upper end of the spiral body of the fourth die head 6, the plane flow channel layer of the fourth die head 6 is superposed on the upper end of the fifth die head 7, the plane flow channel layer of the fifth die head 7 is superposed on the upper end of the bottom plate of the die body 8, a taper gap is formed between the adjacent die heads, the upper end of the die core is connected with a die opening 1 through threads, the upper end of the first die head 3 is also fixedly provided with a die cover 2, the die cover 2 is positioned at the outer side of the die opening 1, a forming cavity is arranged between the die cover 2 and the die opening 1, the structural die is mainly forged by adopting 0Cr17Ni4Cu4Nb stainless steel material and is formed by finish machining through a numerical control lathe, the taper gap between the die heads can, the films generated by the fourth die head 6 and the fifth die head 7 are positioned on the innermost layer, the films generated by the fourth die head 6 and the third die head 5 are positioned on the second layer, and are sequentially overlapped to form a multilayer film, and the multilayer film is finally extruded and shaped by a forming cavity to form a product.
Further, a plane runner 9 is arranged on the plane runner layer, the plane runner 9 of the plane runner layer is divided for three times, the main feeding runner flows into two arc runners through the end part of one arc runner, then flows into four arc runners from the end parts of the two arc runners, and the end parts of the four arc runners form eight branch ports.
Further, the conical surfaces of the spiral bodies of the first die head 3 and the fourth die head 6 are provided with circumferential array thread runners 10, the number of the circumferential array thread runners 10 is 8, the number of the circumferential array thread runners 10 is the same as the number of the branch outlets of the planar runner 9, and the branch outlets of the planar runner 9 are aligned with the inlet ends of the circumferential array thread runners 10.
Further, the conical surfaces of the spiral bodies of the second die head 4 and the fifth die head 7 are provided with central spiral flow passages 12.
Further, the lower end of the third die head 5 is circular, the upper end of the third die head 5 is spiral, and a branched spiral flow channel 11 is arranged on the conical surface of the upper end of the third die head 5.
In this embodiment, a PE material for a heat seal layer is added to the first die head 3, a biodegradable material is added to the second die head 4, an EVA-vinyl acetate copolymer is added to the third die head 5, a biodegradable material is added to the fourth die head 6, and a PE and a degradable mother particle are added to the fifth die head 7.
When the die is used, different raw materials are injected through different die heads.
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 (6)
1. The fully biodegradable 5-layer separation mold comprises a mold body (8) and is characterized in that a vertical mold core is arranged at the upper end of the mold body (8), the lower end of the mold body (8) is a horizontal bottom plate, the mold body (8) is integrally of an inverted T-shaped structure, a first mold head (3), a second mold head (4), a third mold head (5), a fourth mold head (6) and a fifth mold head (7) are sequentially sleeved on the mold core from top to bottom, concave countersunk holes are formed in the first mold head (3), the second mold head (4), the third mold head (5), the fourth mold head (6) and the fifth mold head (7) and communicated with a feeding runner, the first mold head (3), the second mold head (4), the fourth mold head (6) and the fifth mold head (7) are identical in structure, and the first mold head (3) comprises a plane runner layer and a spiral body, the inlet end of the spiral body is concentrically matched with the outlet end of the plane flow channel layer, the third die head (5) is of an integrated structure, the plane flow channel layer of the first die head (3) is superposed at the upper end of the spiral body of the second die head (4), the plane flow channel layer of the second die head (4) is superposed at the upper end of the third die head (5), the third die head (5) is superposed at the upper end of the spiral body of the fourth die head (6), the plane flow channel layer of the fourth die head (6) is superposed at the upper end of the fifth die head (7), the plane flow channel layer of the fifth die head (7) is superposed at the upper end of the bottom plate of the die body (8), and a taper gap is formed between the adjacent die heads, the upper end of the mould core is connected with a mould opening (1) through threads, the upper end of the first mould head (3) is also fixedly provided with a mould cover (2), the die cover (2) is located on the outer side of the die opening (1), and a forming cavity is arranged between the die cover (2) and the die opening (1).
2. The fully biodegradable 5-layer blocking mold according to claim 1, wherein the planar flow channel layer is provided with a planar flow channel (9), the planar flow channel (9) of the planar flow channel layer is divided into three times, the main feeding flow channel flows into two circular arc flow channels through the end part of one circular arc flow channel, and then flows into four circular arc flow channels from the end parts of the two circular arc flow channels, and the end parts of the four circular arc flow channels form eight branch ports.
3. A fully biodegradable 5-layer barrier mould according to claim 1, characterised in that the conical surfaces of the helices of the first (3) and fourth (6) dies are provided with a circumferential array of thread runners (10).
4. A fully biodegradable 5-layer barrier mould according to claim 1, characterised in that the conical surfaces of the helices of the second (4) and fifth (7) dies are provided with a central helical flow channel (12).
5. The fully biodegradable 5-layer barrier mold according to claim 1, wherein the lower end of the third mold head (5) is circular, the upper end of the third mold head (5) is spiral, and the conical surface of the upper end of the third mold head (5) is provided with a branched spiral flow passage (11).
6. The use method of the fully biodegradable 5-layer barrier mold according to claim 1, characterized in that the PE raw material for heat sealing layer is added into the first mold head (3), the biodegradable raw material is added into the second mold head (4), the EVA-ethylene acetate copolymer is added into the third mold head (5), the biodegradable raw material is added into the fourth mold head (6), and the PE and the degradation master batch are added into the fifth mold head (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010538731.7A CN111590855A (en) | 2020-06-13 | 2020-06-13 | Full-biodegradable 5-layer separation mold |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010538731.7A CN111590855A (en) | 2020-06-13 | 2020-06-13 | Full-biodegradable 5-layer separation mold |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111590855A true CN111590855A (en) | 2020-08-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010538731.7A Pending CN111590855A (en) | 2020-06-13 | 2020-06-13 | Full-biodegradable 5-layer separation mold |
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| CN (1) | CN111590855A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2875773Y (en) * | 2005-12-27 | 2007-03-07 | 朝日物产(天津)矿业有限公司 | Longitudinal coloured film extrusion machine |
| CN101780715A (en) * | 2010-03-12 | 2010-07-21 | 大连吉润高新技术机械有限公司 | Machine head of seven-layer coextrusion high barrier film blow molding machine |
| CN203004275U (en) * | 2012-12-21 | 2013-06-19 | 浙江精诚模具机械有限公司 | Multi-layer composition hollow plate extrusion die |
| CN203344293U (en) * | 2013-04-28 | 2013-12-18 | 福建连众智惠实业有限公司 | Die head of multi-layer co-extrusion water-cooling blow-molding film unit |
| CN106915052A (en) * | 2017-04-01 | 2017-07-04 | 苏州星贝尔中空成型科技股份有限公司 | Six layers of co-extrusion die head in blow molding machine |
| CN207825430U (en) * | 2017-12-25 | 2018-09-07 | 广东金明精机股份有限公司 | Eleventh floor coextrusion film blowing machine die head |
| CN208324151U (en) * | 2018-03-30 | 2019-01-04 | 浙江众成包装材料股份有限公司 | A kind of superposed multilayer co-extrusion die head |
| CN209158893U (en) * | 2018-10-16 | 2019-07-26 | 佛山市顺德区雄球塑料机械有限公司 | A kind of bilayer extrusion die |
-
2020
- 2020-06-13 CN CN202010538731.7A patent/CN111590855A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2875773Y (en) * | 2005-12-27 | 2007-03-07 | 朝日物产(天津)矿业有限公司 | Longitudinal coloured film extrusion machine |
| CN101780715A (en) * | 2010-03-12 | 2010-07-21 | 大连吉润高新技术机械有限公司 | Machine head of seven-layer coextrusion high barrier film blow molding machine |
| CN203004275U (en) * | 2012-12-21 | 2013-06-19 | 浙江精诚模具机械有限公司 | Multi-layer composition hollow plate extrusion die |
| CN203344293U (en) * | 2013-04-28 | 2013-12-18 | 福建连众智惠实业有限公司 | Die head of multi-layer co-extrusion water-cooling blow-molding film unit |
| CN106915052A (en) * | 2017-04-01 | 2017-07-04 | 苏州星贝尔中空成型科技股份有限公司 | Six layers of co-extrusion die head in blow molding machine |
| CN207825430U (en) * | 2017-12-25 | 2018-09-07 | 广东金明精机股份有限公司 | Eleventh floor coextrusion film blowing machine die head |
| CN208324151U (en) * | 2018-03-30 | 2019-01-04 | 浙江众成包装材料股份有限公司 | A kind of superposed multilayer co-extrusion die head |
| CN209158893U (en) * | 2018-10-16 | 2019-07-26 | 佛山市顺德区雄球塑料机械有限公司 | A kind of bilayer extrusion die |
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Application publication date: 20200828 |
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