CN214448318U

CN214448318U - Extrusion equipment for producing seven-layer co-extrusion degradable high-barrier sheet

Info

Publication number: CN214448318U
Application number: CN202022226920.9U
Authority: CN
Inventors: 梁斌; 戴惠斌
Original assignee: Jingcheng Times Zhejiang Mold Machinery Co ltd
Current assignee: Jingcheng Times Zhejiang Mold Machinery Co ltd
Priority date: 2020-10-09
Filing date: 2020-10-09
Publication date: 2021-10-22
Anticipated expiration: 2030-10-09

Abstract

The technical scheme is that the extrusion equipment for producing the seven-layer co-extrusion degradable high-barrier sheet comprises an extrusion die head and a distributor, wherein a shunting core rod is arranged at the front part of the distributor, a raw material inlet is arranged at the front end of the distributor, the raw material inlet is guided by the shunting core rod to be shunted and then respectively enters seven feeding runners of the distributor, the seven feeding runners are sequentially converged in the distributor to form a main runner, the extrusion die head is connected to the rear end of the distributor, the main runner is correspondingly communicated with an extrusion runner in the extrusion die head, and a seven-layer composite product is extruded through a discharge port at the rear end of the extrusion die head. The invention has novel structure, can finally produce film sheet products which are degradable, can block water vapor, oxygen and the like by selecting various degradable raw materials for composite processing and utilizing different physical properties of the raw materials, can be used for packaging various foods, prolongs the shelf life and is green and environment-friendly.

Description

Extrusion equipment for producing seven-layer co-extrusion degradable high-barrier sheet

Technical Field

The invention relates to sheet product extrusion equipment, in particular to extrusion equipment for producing seven-layer co-extrusion degradable high-barrier sheets.

Background

Currently, films for various food packaging applications can only produce non-degradable high barrier products based on existing die and dispenser technology. Based on the protection to the environment, the state advocates that the degradable materials are required to be used for producing the film for food packaging, so that various raw materials are required to be compounded to meet various performance requirements of the food packaging bag.

Disclosure of Invention

Aiming at the problems, the invention aims to provide extrusion equipment for producing seven-layer co-extrusion degradable high-barrier sheets, which adopts a brand-new structural design to produce film sheet products which are degradable, can also block water vapor, oxygen and the like, can be applied to various food packages, and meets the requirement of environmental protection on the basis of meeting various performances of the food packages.

The technical scheme is that the extrusion equipment for producing the seven-layer co-extrusion degradable high-barrier sheet comprises an extrusion die head and a distributor, wherein a shunting core rod is arranged at the front part of the distributor, a raw material inlet is arranged at the front end of the distributor, the raw material inlet is guided by the shunting core rod to be shunted and then respectively enters seven feeding runners of the distributor, the seven feeding runners are sequentially converged in the distributor to form a main runner, the extrusion die head is connected to the rear end of the distributor, the main runner is correspondingly communicated with an extrusion runner in the extrusion die head, and a seven-layer composite product is extruded through a discharge port at the rear end of the extrusion die head.

Preferably, the terminal surface is provided with degradable raw materials barrier layer C raw materials entry, degradable raw materials D raw materials entry and degradable raw materials E raw materials entry respectively before the distributor, the distributor front end left surface is provided with two degradable raw materials A raw materials entries, distributor front end right flank is provided with two degradable raw materials gluing agent B raw materials entries, be provided with D passageway, C passageway, E passageway, A passageway and B passageway on the reposition of redundant personnel plug, arrange on a straight line behind respective passageway in the reposition of redundant personnel plug above-mentioned five kinds of raw materialss, form the inline of seven runners of DABCBAE to correspond respectively in the seven runners that get into the distributor.

Preferably, the D runner, the A runner, the B runner, the C runner, the B runner, the A runner and the E runner are sequentially arranged in the distributor along a straight line, the C runner is a middle runner, the rear end of the B runner is communicated with the two sides of the C runner, the rear end of the A runner is positioned behind the B runner and communicated with the two sides of the C runner, the rear ends of the D runner and the E runner are positioned behind the A runner and communicated with the two sides of the C runner, flow regulating rods capable of controlling the sizes of openings of the runners are arranged at positions, close to the C runner, of the tail ends of the A runner, the B runner, the D runner and the E runner, and seven flow out of the main runner and enter the extrusion runner in the extrusion die head after the runners are compounded.

Preferably, the whole outer surface of the flow regulating rod is a cylindrical surface, an open slot is processed on the cylindrical surface, the flow regulating rod is rotated to regulate the width of the flow channel, the flow regulating rod completely obstructs the flow channel when the cylindrical surface faces the flow channel so that the flow channel is closed, the flow channel is smooth when the open slot partially faces the flow channel, and the opening width of the flow channel is changed by controlling the inclination angle of the open slot and the flow channel.

Preferably, the extrusion flow channel in the extrusion die head is a branch pipe type flow channel structure, the branch pipe type flow channel structure comprises a vertical flow channel part and a horizontal flow channel part, and the left side and the right side of the horizontal flow channel part are positioned on the same horizontal line.

Preferably, a die lip gap fine-adjusting mechanism is arranged at the die lip at the rear end of the extrusion die head.

Preferably, the extrusion die head is connected to the outlet of the rear end of the distributor through a connecting flange.

The invention has novel structure, can finally produce film sheet products which are degradable, can block water vapor, oxygen and the like by selecting various degradable raw materials for composite processing and utilizing different physical properties of the raw materials, can be used for packaging various foods, prolongs the shelf life and is green and environment-friendly.

Drawings

FIG. 1 is a schematic cross-sectional view of the present invention;

FIG. 2 is a schematic view of an exploded view of the present invention with the extrusion die removed;

FIG. 3 is a partially broken away exploded view of FIG. 2;

FIG. 4 is a front view of the present invention;

FIG. 5 is a schematic view of the present invention showing the structure of an extrusion flow channel;

wherein: 1-extrusion die head; 2-a distributor; 3-shunting core rod; 31-channel D; 32-C channel; 33 — E channel; 34 — a channel; 35-channel B; 4-raw material inlet; 5-a feeding runner; 6-a main runner; 7, extruding a flow channel; 71-vertical runner section; 72-horizontal runner section; 8, discharging a material outlet; 9-a raw material inlet of a degradable raw material barrier layer C; 10, a raw material inlet of degradable raw materials D; 11-degradable raw material E raw material inlet; 12-a raw material inlet of degradable raw material A; 13-degradable raw material adhesive B raw material inlet; 14-flow channel D; 15-flow channel A; 16-flow channel B; 17-C flow channel; 18-E flow channel; 19-flow regulating rod; 20-open slots; 21-a die lip gap fine-tuning mechanism; 22-connecting flange.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

As shown in fig. 1 to 5, the present invention provides an extrusion apparatus for producing a seven-layer co-extrusion degradable high-barrier sheet, which includes an extrusion die head 1 and a distributor 2, wherein a shunting core rod 3 is arranged at the front part of the distributor 2, a raw material inlet 4 is arranged at the front end of the distributor 2, the raw material inlet 4 is guided by the shunting core rod 3 and shunted and then respectively enters seven feeding runners 5 of the distributor 2, the seven feeding runners 5 are sequentially converged in the distributor 2 to form a main runner 6, the extrusion die head 1 is connected to the rear end of the distributor 2, the main runner 6 is correspondingly communicated to an extrusion runner 7 in the extrusion die head 1, and a seven-layer composite product is extruded through a discharge port 8 at the rear end of the extrusion die head 1.

On the basis, the front end face of the distributor 2 is respectively provided with a degradable raw material barrier layer C raw material inlet 9, a degradable raw material D raw material inlet 10 and a degradable raw material E raw material inlet 11, the left side face of the front end of the distributor is provided with two degradable raw material A raw material inlets 12, the right side face of the front end of the distributor is provided with two degradable raw material adhesive B raw material inlets 13, the number of the degradable raw material A raw material inlets 12 and the number of the degradable raw material adhesive B raw material inlets 13 can be one, one inlet and two outlets are adopted in the flow distribution core rod 3 to realize one-in-two, the flow distribution core rod 3 is provided with a D channel 31, a C channel 32, an E channel 33, an A channel 34 and a B channel 35, the five raw materials are arranged on a straight line after passing through respective channels in the flow distribution core rod 3 to form a straight line arrangement of seven DABCBAE flow channels, and respectively enter the seven flow passages of the distributor 2.

Preferably, a runner D14, a runner A15, a runner B16, a runner C17, a runner B16, a runner A15 and a runner E18 are sequentially arranged in the distributor 2 along a straight line, the runner C17 is a middle runner, the rear end of the runner B16 is communicated with the two sides of the runner C17, the rear end of the runner A15 is positioned behind the runner B16 and communicated with the two sides of the runner C17, the rear ends of the runner D14 and the runner E18 are positioned behind the runner A15 and communicated with the two sides of the runner C17, flow adjusting rods 19 capable of controlling the opening size of the runners are arranged at the positions, close to the runner C17, of the tail ends of the runner A15, the runner B16, the runner D14 and the runner E18, and the seven runners are combined and then flow out through the main runner 6 and enter the extrusion runner 7 in the extrusion die head 1.

Furthermore, the whole outer surface of the flow adjusting rod 19 is a cylindrical surface, an open slot 20 is formed in the cylindrical surface, the flow adjusting rod 19 is rotated to adjust the width of the flow channel, when the cylindrical surface faces the flow channel, the flow adjusting rod 19 completely blocks the flow channel to close the flow channel, when the open slot 20 partially faces the flow channel, the flow channel is smooth, the width of the opening of the flow channel is changed by controlling the inclination angle of the open slot 20 and the flow channel, and the adjusting mode is simple and reliable.

In addition, the extrusion flow channel 7 in the extrusion die head 1 is a branch flow channel structure, the branch flow channel structure comprises a vertical flow channel part 71 and a horizontal flow channel part 72, the left side and the right side of the horizontal flow channel part 72 are positioned on the same horizontal line, and the branch flow channel design is favorable for uniform flow distribution during extrusion.

In addition, a die lip gap fine-adjusting mechanism 21 is arranged at a die lip at the rear end of the extrusion die head 1, and the die lip gap fine-adjusting mechanism is a device which is commonly used on the extrusion die head and used for adjusting the die lip gap.

In the invention, specifically, the extrusion die head 1 is connected to the outlet at the rear end of the distributor 2 through the connecting flange 22, and the connection mode is stable and reliable.

The working principle of the invention is as follows: the raw material of the degradable raw material barrier layer C, the degradable raw material D and the degradable raw material E respectively enter through a raw material inlet 9 of the degradable raw material barrier layer C, a raw material inlet 10 of the degradable raw material D and a raw material inlet 11 of the degradable raw material E on the front end face of the distributor 2, the degradable raw material A enters through a raw material inlet 12 of the degradable raw material A on the left side face of the distributor 2, the degradable raw material B enters through a raw material inlet 13 of the degradable raw material adhesive B on the right side face of the distributor 2, and the raw materials are guided and sequenced through a channel D31, a channel C32, a channel E33, a channel A34 and a channel B35 in the distribution core rod 3, so that the five raw materials are finally arranged on a straight line through respective channels in the distribution core rod 3 to form a straight line arrangement of seven DABCBAE flow channels corresponding to the D flow channel 14, the A flow channel 15, the B flow channel 16, the C flow channel 17, The flow passage B16, the flow passage A15 and the flow passage E18 are finally subjected to intersection compounding in the distributor 2, wherein the step is three-step compounding, and the first step is compounding of the flow passage B16 and the flow passage C17 to form a composite layer of a BCB structure; the second step is the composition of the A runner 15 and the BCB composite layer to form the composite layer of an ABCBA structure; and the third part is the composition of the D runner 14, the E runner 18 and the ABCBA composite layer to form a DABCBAE structure composite layer, and finally flows out of the main runner 6 and enters the extrusion runner 7 in the extrusion die head 1, and finally the product is extruded from the discharge port 8.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way, and any simple modification, equivalent change or modification made to the above embodiments according to the technical principle of the present invention still falls within the scope of the technical solution of the present invention.

Claims

1. The utility model provides an extrusion equipment for producing seven layers are crowded degradable high resistant sheet altogether which characterized in that: including extrusion die (1) and distributor (2), distributor (2) front portion is provided with reposition of redundant personnel plug (3), distributor (2) front end is provided with raw materials entry (4), in raw materials entry (4) get into seven feed runner (5) of distributor (2) respectively after reposition of redundant personnel plug (3) direction reposition of redundant personnel, seven feed runner (5) form a sprue (6) after converging in proper order in distributor (2), extrusion die (1) is connected at distributor (2) rear end, sprue (6) correspond intercommunication to extrusion runner (7) in extrusion die (1) to seven layers of composite product are extruded through extrusion die (1) rear end discharge gate (8).

2. The extrusion equipment for producing the seven-layer co-extruded degradable high-barrier sheet according to claim 1, wherein: the front end surface of the distributor (2) is respectively provided with a degradable raw material barrier layer C raw material inlet (9), a degradable raw material D raw material inlet (10) and a degradable raw material E raw material inlet (11), the left side surface of the front end of the distributor is provided with two degradable raw material A inlets (12), two degradable raw material adhesive B raw material inlets (13) are arranged on the right side surface of the front end of the distributor, the flow dividing core rod (3) is provided with a channel D (31), a channel C (32), a channel E (33), a channel A (34) and a channel B (35), the degradable raw material A, the degradable raw material adhesive B, the degradable raw material barrier layer C, the degradable raw material D and the degradable raw material E are arranged on a straight line after passing through respective channels in the shunting core rod (3), so that seven flow channels of the DABCBAE are linearly arranged and respectively and correspondingly enter the seven flow channels of the distributor (2).

3. The extrusion equipment for producing the seven-layer co-extruded degradable high-barrier sheet according to claim 2, wherein: a flow passage D (14), a flow passage A (15), a flow passage B (16), a flow passage C (17), a flow passage B (16), a flow passage A (15) and a flow passage E (18) are sequentially arranged in the distributor (2) along a straight line, the flow channel C (17) is a middle flow channel, the rear end of the flow channel B (16) is communicated with the two sides of the flow channel C (17), the rear end of the flow passage A (15) is positioned behind the flow passage B (16) and is communicated with the two sides of the flow passage C (17), the rear ends of the flow passage D (14) and the flow passage E (18) are positioned behind the flow passage A (15) and are communicated with the two sides of the flow passage C (17), flow adjusting rods (19) capable of controlling the opening size of the flow channels are arranged at the tail ends of the flow channel A (15), the flow channel B (16), the flow channel D (14) and the flow channel E (18) close to the flow channel C (17), the seven runners are compounded and then flow out through the main runner (6) and enter the extrusion runner (7) in the extrusion die head (1).

4. The extrusion equipment for producing the seven-layer co-extruded degradable high-barrier sheet according to claim 3, wherein: the flow regulating device is characterized in that the whole outer surface of the flow regulating rod (19) is a cylindrical surface, an open groove (20) is processed on the cylindrical surface, the flow regulating rod (19) is rotated to regulate the width of a flow channel, the flow channel is completely blocked by the flow regulating rod (19) when the cylindrical surface faces the flow channel, so that the flow channel is closed, the flow channel is smooth when the open groove (20) partially faces the flow channel, and the opening width of the flow channel is changed by controlling the inclination angle of the open groove (20) and the flow channel.

5. The extrusion equipment for producing the seven-layer co-extruded degradable high-barrier sheet according to claim 1, wherein: the extrusion flow channel (7) in the extrusion die head (1) is of a branch pipe type flow channel structure, the branch pipe type flow channel structure comprises a vertical flow channel part (71) and a horizontal flow channel part (72), and the left side and the right side of the horizontal flow channel part (72) are in the same horizontal line.

6. The extrusion equipment for producing the seven-layer co-extruded degradable high-barrier sheet according to claim 1, wherein: and a die lip clearance fine-adjustment mechanism (21) is arranged at the die lip at the rear end of the extrusion die head (1).

7. The extrusion equipment for producing the seven-layer co-extruded degradable high-barrier sheet according to claim 1, wherein: the extrusion die head (1) is connected to an outlet at the rear end of the distributor (2) through a connecting flange (22).