CN116394429A

CN116394429A - Reclaimed plastic recovery equipment

Info

Publication number: CN116394429A
Application number: CN202310425207.2A
Authority: CN
Inventors: 梅林�; 沈长春; 汤桂宝
Original assignee: Yancheng Beidi Plastic Industry Co ltd; Yancheng Dafeng Hailong Plastics Co ltd
Current assignee: Yancheng Beidi Plastic Industry Co ltd; Yancheng Dafeng Hailong Plastics Co ltd
Priority date: 2023-04-20
Filing date: 2023-04-20
Publication date: 2023-07-07
Anticipated expiration: 2043-04-20
Also published as: CN116394429B

Abstract

The invention discloses regenerated plastic recycling equipment, which comprises a crushing bin, a drying cylinder, a dehumidifying pipe, a screening cylinder, a scraper conveyor and a hot melting bin, and belongs to the technical field of regenerated plastic recycling.

Description

Reclaimed plastic recovery equipment

Technical Field

The invention belongs to the technical field of recycling of reclaimed plastics, and particularly relates to recycling equipment of reclaimed plastics.

Background

In the actual recycling process, however, there are many problems, such as the fact that the brush handle is made of acetate fiber plastic, the brush hair is made of polypropylene plastic, the copper rings are arranged at the root parts of the brush hair, if the brush handle is directly melted and molded, although the copper rings can be separated, the brush handle and the brush hair are mixed together, if the brush handle is melted and molded after being crushed, the copper rings are adhered to the brush hair more tightly after being extruded, and are more difficult to separate, and the obtained regenerated plastic is difficult to recycle finely due to the fact that the toothbrush and the like contain a large amount of metal impurities, so that the quality of the regenerated plastic is uneven, and the quality of products is difficult to be ensured.

Disclosure of Invention

In view of the above, to overcome the defects in the prior art, the present invention provides a recycling apparatus for recycled plastics, which solves the problems set forth in the background art.

The technical scheme adopted by the invention is as follows: the invention provides regenerated plastic recycling equipment, which comprises a crushing bin, a drying cylinder, a dehumidifying pipe, a screening cylinder, a scraper conveyor and a hot melting bin, wherein the hot melting bin consists of a heat insulation layer and a high-temperature resistant elastic layer, the heat insulation layer is sleeved outside the high-temperature resistant elastic layer, a stretching magnet is arranged at the joint of the heat insulation layer and the high-temperature resistant elastic layer, a heat insulation bag is arranged at the joint of the stretching magnet and the heat insulation layer, the heat insulation bag is filled with water-based flame retardant, the stretching magnet is circumferentially arrayed along the center of the hot melting bin, a heating column is arranged on the inner bottom wall of the hot melting bin, two sides of the hot melting bin are provided with electromagnetic rings, the electromagnetic rings are arranged on a magnetic ring supporting frame, crushing rollers are arranged in the crushing bins, crushing blades are arranged on the crushing rollers, roller shafts of the crushing rollers are rotatably connected with the crushing motors, the crushing motors are arranged on the outer walls of the crushing bins, a first conveying pump is arranged on the outer walls of the crushing bins, an electric heating plate is arranged on the inner wall of the crushing bins, a heating plate is arranged below the electric heating plate is arranged along the center of the hot melting bin, a heating plate is arranged near the bottom end of the micro-air bubble conveying pipe, and is arranged near the bottom end of the micro-bubble conveying pipe, and is connected with the bottom end of the micro-bubble conveying pipe, and is arranged near the bottom end of the micro-blowing pipe, and is connected with the air conveying tube through the drying cylinder, and the bottom end of the micro-bubble conveying pipe.

As a preferable technical scheme of the invention, two groups of drying fans are arranged on the outer cylinder wall at one end of the drying cylinder, a steam outlet is arranged at the top of the middle section of the drying cylinder, and a supporting block is arranged at the bottom of the middle section of the drying cylinder.

As a preferable technical scheme of the invention, a dehumidifying sleeve is sleeved outside the dehumidifying pipe, a porous material layer is arranged between the dehumidifying sleeve and the dehumidifying pipe, a seepage hole is arranged at the joint of the dehumidifying pipe and the porous material layer, the dehumidifying sleeve is connected with one end of a moisture collecting pipe, the other end of the moisture collecting pipe is connected with a moisture collecting pump, the moisture collecting pump is arranged on a collecting box, and the moisture collecting pipes are arranged on the upper side and the lower side of the dehumidifying sleeve.

As a preferable technical scheme of the invention, one end of the dehumidifying pipe is connected with the end sleeve, the end sleeve is provided with two groups, a screening cylinder is rotationally connected between the end sleeves, a sleeved gear is arranged at the middle section of the outer cylinder wall of the screening cylinder, a bottom gear is arranged obliquely below the sleeved gear, the bottom gear is positioned at two sides of the sleeved gear, the sleeved gear is in meshed connection with the bottom gear, the bottom gear is arranged on a bottom rotating shaft, the bottom rotating shaft is rotationally connected and arranged on a rotating shaft mounting frame, a screening opening is arranged on the cylinder wall of the screening cylinder, a separation pump is arranged on the end sleeve on one side, the separation pump is connected with one end of the separation pipe, the other end of the separation pipe is positioned above a collecting bin, the collecting bin is arranged on one side of the end sleeve, and a screening motor is arranged on the rotating shaft mounting frame and is rotationally connected with the bottom rotating shaft.

As a preferable technical scheme of the invention, the outer bottom wall of the hot melting bin is provided with a second conveying pump, the second conveying pump is provided with a second conveying pipe, and the outer bottom wall of the hot melting bin is also provided with supporting legs.

As a preferable technical scheme of the invention, a metal output pipe is arranged on the outer wall of one side of the crushing bin, the bottom wall of the metal output pipe is kept flush with the bottom wall of the isolation bushing, a support column is arranged on the outer wall of the top of the crushing bin, and the high-temperature resistant elastic layer is made of wholly aromatic polyimide material.

The regenerated plastic recycling device provided by the invention has the beneficial effects that:

(1) After the toothbrush is crushed and smashed, the smashed objects are heated by hot water, copper rings in the smashed objects expand after being heated, gaps between the copper rings and the bristles become large, and the bristles are separated from the copper rings conveniently.

(2) The microbubble input pipe can carry the rivers that contain the microbubble into broken storehouse from the bottom in broken storehouse, and at the in-process that the microbubble rivers upwards moved, the microbubble can carry brush holder and the brush hair after smashing to the surface of water, makes brush holder and the brush hair after smashing and copper circle separation.

(3) The porous material layer can collect residual moisture in crushed plastics, and negative pressure can be alternately generated in the moisture collecting pipes on the upper side and the lower side by controlling the opening and closing of the moisture collecting pump, and the plastic powder around the seepage hole on the other side can be sucked away by the moisture collecting pipe on one side generating the negative pressure, so that the phenomenon that the seepage hole is blocked by the crushed plastics and the water emission is influenced is avoided.

(4) The screening barrel can separate the crushed brush handle powder from the brush hair, so that the plastic is finely recycled.

(5) After alternating current is introduced into the electromagnetic ring, an alternating magnetic field is generated, and the stretching magnet is continuously attracted and repelled by surrounding magnetic fields after being influenced by the changing magnetic field, so that the stretching magnet repeatedly moves between the high-temperature resistant elastic layer and the heat insulation layer, and the high-temperature resistant elastic layer can be repeatedly stretched in the process, so that the plastic with the cooled surface is conveniently peeled off.

Drawings

FIG. 1 is a schematic diagram of the whole structure of a recycling device for recycled plastic according to the present invention;

FIG. 2 is a top view of a recycling apparatus for recycled plastic according to the present invention;

FIG. 3 is a schematic view of the overall structure of the crushing bin according to the present invention;

FIG. 4 is a cross-sectional view of a crushing bin according to the present invention;

FIG. 5 is a schematic view of the overall structure of the drying drum and the dehumidifying tube according to the present invention;

FIG. 6 is a cross-sectional view of a dehumidification tube and a dehumidification sleeve in accordance with the present disclosure;

FIG. 7 is a schematic view of the overall structure of a sieving cartridge according to the present invention;

FIG. 8 is a schematic view of the overall structure of the hot melting chamber according to the present invention;

FIG. 9 is a cross-sectional view of a hot melt cartridge according to the present invention;

fig. 10 is a partial enlarged view of a portion a of fig. 9.

Wherein 1, crushing bin, 101, crushing roller, 102, crushing blade, 103, crushing motor, 104, crushing roller, 105, crushing motor, 106, first conveying pump, 107, first conveying pipe, 108, electric heating plate, 109, isolation bushing, 110, microbubble input pipe, 111, bottom cross pipe, 112, metal output pipe, 113, support column, 2, drying drum, 201, drying fan, 202, steam outlet, 203, support block, 3, dehumidification pipe, 301, dehumidification sleeve, 302, seepage hole, 303, porous material layer, 304, moisture collection pipe, 305, moisture collection pump, 306, collection box, 4, sieving drum, 401, end sleeve, 402, encasement gear, 403, sieving port, 404, separation pump, 405, separation pipe, 406, collection bin, 407, bottom gear, bottom rotating shaft, 409, rotating shaft mounting bracket, 410, sieving motor, 5, scraper conveyor, 6, hot melt bin, 601, thermal insulation layer, 602, high temperature resistant elastic layer, 603, stretching magnet, 604, thermal insulation bag, 607, heat insulation bag, 605, 606, magnetic ring, 611, 609, second conveying leg, 609, water-based conveying pump, 609, conveying pipe, water-based conveying ring, 610, water-based conveying pump, 609, water-based conveying ring, end sleeve, 402, encasement gear, 403, sieving port, separation pump, 405, separation pump, and upper part.

The accompanying drawings are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate the invention and together with the embodiments of the invention, serve to explain the invention.

Detailed Description

The following description of the embodiments of the present invention will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the invention; all other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

As a new embodiment of the invention, as shown in fig. 1-10, the invention provides a recycling device for reclaimed plastic, comprising a crushing bin 1, a drying cylinder 2, a dehumidifying pipe 3, a screening cylinder 4, a scraper conveyor 5 and a hot melting bin 6, wherein the hot melting bin 6 consists of a heat insulation layer 601 and a high temperature resistant elastic layer 602, the heat insulation layer 601 is sleeved outside the high temperature resistant elastic layer 602, a stretching magnet 603 is arranged at the joint of the heat insulation layer 601 and the high temperature resistant elastic layer 602, a heat insulation bag 604 is arranged at the joint of the stretching magnet 603 and the heat insulation layer 601, the heat insulation bag 604 is filled with a water-based flame retardant 605, the stretching magnet 603 is arranged in a circumferential array along the circle center of the hot melting bin 6, a heating column 606 is arranged on the inner bottom wall of the hot melting bin 6, electromagnetic rings 607 are arranged on two sides of the hot melting bin 6, the electromagnetic rings 607 are arranged on a magnetic ring support frame 608, a crushing roller 101 is arranged in the crushing bin 1, a crushing blade 102 is arranged on the crushing roller 101, the roll shaft of the crushing roll 101 is rotationally connected with the crushing motor 103, the crushing roll 104 is arranged below the crushing roll 101, the roll shaft of the crushing roll 104 is rotationally connected with the crushing motor 105, the crushing motor 103 and the crushing motor 105 are arranged on the outer wall of the crushing bin 1, a first conveying pump 106 is arranged on the outer wall of the crushing bin 1, an electric heating plate 108 is arranged on the inner wall of the crushing bin 1, an isolation bushing 109 is arranged below the electric heating plate 108, a micro-bubble input pipe 110 is arranged below the isolation bushing 109, the top end of the micro-bubble input pipe 110 is positioned in the crushing bin 1, the bottom end of the micro-bubble input pipe 110 penetrates through the bottom wall of the crushing bin 1, the bottom end of the micro-bubble input pipe 110 is connected with a bottom transverse pipe 111, the first conveying pump 106 is arranged close to the top of the electric heating plate 108, the first conveying pump 106 is connected with one end of the first conveying pipe 107, the other end of the first conveying pipe 107 is connected with the drying cylinder 2, the drying cylinder 2 is communicated with the inner space of the screening cylinder 4 through the dehumidification pipe 3, the hot melting bin 6 is arranged on one side of the screening cylinder 4, and the scraper conveyor 5 is arranged between the hot melting bin 6 and the screening cylinder 4.

As shown in fig. 5, two groups of drying fans 201 are installed on the outer cylinder wall of one end of the drying cylinder 2, a steam outlet 202 is installed at the top of the middle section of the drying cylinder 2, and a supporting block 203 is installed at the bottom of the middle section of the drying cylinder 2.

As shown in fig. 5 and 6, the dehumidifying sleeve 301 is sleeved outside the dehumidifying pipe 3, a porous material layer 303 is arranged between the dehumidifying sleeve 301 and the dehumidifying pipe 3, a seepage hole 302 is arranged at the joint of the dehumidifying pipe 3 and the porous material layer 303, the dehumidifying sleeve 301 is connected with one end of a moisture collecting pipe 304, the other end of the moisture collecting pipe 304 is connected with a moisture collecting pump 305, the moisture collecting pump 305 is arranged on a collecting box 306, and the moisture collecting pipe 304 is arranged on the upper side and the lower side of the dehumidifying sleeve 301.

As shown in fig. 7, one end of the dehumidification tube 3 is connected with an end sleeve 401, the end sleeve 401 is provided with two groups, a screening tube 4 is rotatably connected between the end sleeves 401, a sleeved gear 402 is installed at the middle section of the outer cylinder wall of the screening tube 4, a bottom gear 407 is arranged below the sleeved gear 402, the bottom gear 407 is positioned at two sides of the sleeved gear 402, the sleeved gear 402 is meshed with the bottom gear 407, the bottom gear 407 is installed on a bottom rotating shaft 408, the bottom rotating shaft 408 is rotatably connected and arranged on a rotating shaft mounting bracket 409, a screening opening 403 is formed in the cylinder wall of the screening tube 4, a separating pump 404 is installed on the end sleeve 401 on one side, the separating pump 404 is connected with one end of the separating tube 405, the other end of the separating tube 405 is positioned above a collecting bin 406, the collecting bin 406 is arranged on one side of the end sleeve 401, a screening motor 410 is arranged on the rotating shaft mounting bracket 409, and the screening motor 410 is rotatably connected with the bottom rotating shaft 408.

As shown in fig. 8, a second conveying pump 610 is mounted on the outer bottom wall of the hot melting chamber 6, a second conveying pipe 611 is mounted on the second conveying pump 610, and a supporting leg 609 is also mounted on the outer bottom wall of the hot melting chamber 6.

As shown in fig. 3 and 4, a metal output pipe 112 is installed on the outer wall of one side of the crushing bin 1, the bottom wall of the metal output pipe 112 is kept flush with the bottom wall of the isolation bushing 109, a supporting column 113 is installed on the outer wall of the top of the crushing bin 1, and the high-temperature resistant elastic layer 602 is made of wholly aromatic polyimide material.

When the toothbrush is specifically used, a user puts a recovered toothbrush or a toothbrush analogue into the crushing bin 1, the crushing motor 103 drives the crushing roller 101 and the crushing blade 102 to rotate so as to crush the toothbrush, then the crushing motor 105 is started, the crushing motor 105 drives the crushing roller 104 to crush the crushed toothbrush handle, the bristles are thinner, the original shape of the toothbrush can be kept under the extrusion of the crushing roller 104, the crushed toothbrush falls into the bottom of the crushing bin 1, at the moment, the bottom transverse tube 111 is butted with an external water source in advance, water flow containing microbubbles is conveyed into the crushing bin 1 from the microbubble input tube 110 at the bottom of the crushing bin 1, the electric heating plate 108 heats water in the crushing bin 1, the copper rings are heated and expand, gaps between the copper rings and the bristles become larger, the bristles are made of polypropylene, the density is smaller than that of the water, and the microbubbles are clamped, the bristles and the copper rings are separated and naturally float on the water surface, the density of the toothbrush handle is slightly higher than that of acetate plastics, the density of the toothbrush handle is slightly higher than that the density of the acetate plastics, the bristles can be pulled out of the copper rings on the water surface, and the water can fall out of the metal drain plate 109 through the crushing bin 1; after the bristles are separated from the copper rings, the crushed brush handle and the bristles are conveyed into the drying cylinder 2 through the first conveying pump 106 and the first conveying pipe 107, the crushed brush handle and the bristles are dried through the drying fan 201, most of moisture can flow out through the steam outlet 202, a filtering membrane can be added at the steam outlet 202 to intercept crushed particles, a small amount of moisture residues are easy to exist in the crushed brush handle and the bristles because the crushed brush handle and the bristles are in a flowing state, when the crushed brush handle and the bristles pass through the dehumidifying pipe 3, the moisture collecting pumps 305 on the upper side and the lower side are alternately started, negative pressure can be alternately generated in the moisture collecting pipes 304 on the upper side and the lower side, the moisture collecting pipe 304 on one side with the negative pressure can absorb plastic powder around the seepage hole 302 on the other side, so that the crushed plastic blocks the seepage hole 302 and moisture is prevented from being emitted, and the moisture in the dehumidifying pipe 3 can enter the porous material layer 303 through the seepage hole 302 and then enter the collecting box 306 through the moisture collecting pipe 304; after the crushed brush handle and brush hair are dehumidified, the brush handle and brush hair enter a screening cylinder 4, a screening motor 410 drives a bottom gear 407 to rotate, the bottom gear 407 drives a sleeved gear 402 and the screening cylinder 4 to rotate, brush handle powder falls on a scraper conveyor 5 through a screening opening 403 in the rotation process of the screening cylinder 4, the scraper conveyor 5 conveys the brush handle powder into a hot melting bin 6, and the brush hair in the screening cylinder 4 can enter a collecting bin 406 through a separating pump 404 and a separating pipe 405, so that the fine recovery of the brush handle and brush hair is realized; after the brush handle powder enters the hot melting bin 6, the brush handle powder is heated by the heating column 606, after the brush handle powder is melted, the brush handle powder is conveyed into an extruding machine or a forming grinding tool by the second conveying pump 610 and the second conveying pipe 611 for subsequent processing, after the plastic in the hot melting bin 6 is conveyed, alternating magnetic fields are generated by introducing alternating current into the electromagnetic rings 607, and the stretching magnet 603 is continuously attracted and repelled by surrounding magnetic fields after being influenced by the changing magnetic fields, so that the high-temperature resistant elastic layer 602 and the thermal insulation layer 601 repeatedly move, the high-temperature resistant elastic layer 602 can be repeatedly stretched in the process, the plastic with cooled surfaces can be conveniently stripped, and in addition, the plastic can be sealed and stirred in the hot melting process, so that the hot melting efficiency is improved.

It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

The invention and its embodiments have been described above with no limitation, and the actual construction is not limited to the embodiments of the invention as shown in the drawings. In summary, if one of ordinary skill in the art is informed by this disclosure, a structural manner and an embodiment similar to the technical solution should not be creatively devised without departing from the gist of the present invention.

Claims

1. The utility model provides a reclaimed plastic recovery plant, includes broken storehouse (1), stoving section of thick bamboo (2), dehumidification pipe (3), screening section of thick bamboo (4), scraper conveyor (5) and hot melt storehouse (6), its characterized in that:

the hot melting bin (6) is composed of a heat insulation layer (601) and a high-temperature resistant elastic layer (602), the heat insulation layer (601) is sleeved outside the high-temperature resistant elastic layer (602), a stretching magnet (603) is arranged at the joint of the heat insulation layer (601) and the high-temperature resistant elastic layer (602), a heat insulation bag (604) is arranged at the joint of the stretching magnet (603) and the heat insulation layer (601), the heat insulation bag (604) is filled with a water-based flame retardant (605), the stretching magnet (603) is arranged in a circumferential array along the center of the hot melting bin (6), heating columns (606) are arranged on the inner bottom wall of the hot melting bin (6), electromagnetic rings (607) are arranged on the two sides of the hot melting bin (6), the electromagnetic rings (607) are arranged on a magnetic ring support frame (608), a crushing roller (101) is arranged in the crushing bin (1), a crushing blade (102) is arranged on the crushing roller (101), a roller shaft of the crushing roller (101) is kept in rotation connection with a crushing motor (103), the lower part of the crushing roller (103) is kept in rotation connection with the crushing motor (103), the crushing roller (104) is kept under the crushing motor (104), and the crushing roller (104) is kept on the crushing roller (104), install first delivery pump (106) on the outer wall of broken storehouse (1), install electrical heating board (108) on the inner wall of broken storehouse (1), the below of electrical heating board (108) is equipped with isolation bushing (109), the below of isolation bushing (109) is equipped with microbubble input tube (110), the top of microbubble input tube (110) is located broken storehouse (1), the diapire of broken storehouse (1) is penetrated to the bottom of microbubble input tube (110), the bottom of microbubble input tube (110) is connected with bottom violently pipe (111), the top that first delivery pump (106) is close to electrical heating board (108) sets up, the one end of first delivery pump (106) and first delivery tube (107) is connected, the other end and the stoving section of thick bamboo (2) of thick bamboo (107) are connected, stoving section of thick bamboo (2) are through the inner space intercommunication of dehumidification pipe (3) and screening section of thick bamboo (4), one side that screening section of thick bamboo (4) are located in hot melt storehouse (6), be equipped with between scraper blade (6) and screening machine (5).

2. A recycling apparatus for reclaimed plastic as claimed in claim 1, wherein: two groups of drying fans (201) are arranged on the outer cylinder wall at one end of the drying cylinder (2), a steam outlet (202) is arranged at the top of the middle section of the drying cylinder (2), and a supporting block (203) is arranged at the bottom of the middle section of the drying cylinder (2).

3. A recycling apparatus for reclaimed plastic as claimed in claim 2, wherein: the outside cover of dehumidification pipe (3) is equipped with dehumidification sleeve (301), be equipped with porous material layer (303) between dehumidification sleeve (301) and dehumidification pipe (3), the junction of dehumidification pipe (3) and porous material layer (303) is equipped with seepage hole (302), dehumidification sleeve (301) are connected with the one end of moisture collecting pipe (304), the other end of moisture collecting pipe (304) is connected with moisture collecting pump (305), moisture collecting pump (305) are installed on collecting box (306), the upper and lower both sides of dehumidification sleeve (301) are located to moisture collecting pipe (304).

4. A recycling apparatus for reclaimed plastic as claimed in claim 3, wherein: one end and end sleeve (401) of dehumidification pipe (3) are connected, end sleeve (401) are equipped with two sets of, rotate between end sleeve (401) and be connected with screening section of thick bamboo (4), sleeve gear (402) are installed to the interlude of screening section of thick bamboo (4) outside section of thick bamboo, the oblique below of sleeve gear (402) is equipped with bottom gear (407), bottom gear (407) are located the both sides of sleeve gear (402), sleeve gear (402) and bottom gear (407) keep the meshing to be connected, bottom gear (407) are installed on bottom pivot (408), bottom pivot (408) rotate to be connected and locate on pivot mounting bracket (409), be equipped with screening mouth (403) on the section of thick bamboo wall of screening section of thick bamboo (4), one side install separation pump (404) on end sleeve (401), separation pump (404) are connected with the one end of separator tube (405), the other end of separator tube (405) is located the top of collecting storehouse (406), one side of locating end sleeve (401) motor (409) keep being equipped with pivot (410) and rotate pivot (410).

5. A recycling apparatus for reclaimed plastic as claimed in claim 4, wherein: the second conveying pump (610) is arranged on the outer bottom wall of the hot melting bin (6), the second conveying pipe (611) is arranged on the second conveying pump (610), and the supporting leg (609) is also arranged on the outer bottom wall of the hot melting bin (6).

6. A recycling apparatus for reclaimed plastic as claimed in claim 5, wherein: install metal output tube (112) on the outer wall of one side of broken storehouse (1), the diapire of metal output tube (112) keeps the parallel and level with the diapire of isolating bushing (109), install support column (113) on the top outer wall of broken storehouse (1), high temperature resistant elastic layer (602) are full aromatic polyimide material and make.