CN1792605A - Method for mfg. sub light smooth type aluminium plastic compound band - Google Patents
Method for mfg. sub light smooth type aluminium plastic compound band Download PDFInfo
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- CN1792605A CN1792605A CN 200510022735 CN200510022735A CN1792605A CN 1792605 A CN1792605 A CN 1792605A CN 200510022735 CN200510022735 CN 200510022735 CN 200510022735 A CN200510022735 A CN 200510022735A CN 1792605 A CN1792605 A CN 1792605A
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Abstract
A process for preparing the dull and smooth aluminum-plastic band includes such steps as choosing an aluminum foil as basic band, pre-treating, extruding out at least one plastic film layer onto one or two surfaces of basic band, rolling while heating, and heat-treating by controlling the temp between Vicat softening point and fusion point for obtain dull and smooth surface. It can be used for optical cable or electric cable for high moisture tight effect.
Description
Technical field
The invention belongs to telecommunications material technology field, relate to the cable core of communications optical cable, communication cable and the manufacture method of the metal shield materials between the bonding sheath, specifically a kind of base band thickness is the inferior light smooth type aluminium-plastic tape preparation method of 0.12mm～0.05mm, is applicable to the making industry of communications optical cable, communication cable.
Background technology
Known in the industry; when making communications optical cable, communication cable; because the strand of its PE oversheath does not slightly have real moisture-proof role; thereby must one deck screen layer be set with the fine and closely woven metal material of strand; the PE oversheath material of this screen layer and communications optical cable/cable sticks together and constitutes bonding sheath; play the protection cable core and avoid the effect of moisture and pernicious gas erosion; to improve the service life of communications optical cable/cable, make transmission characteristic long-term stability, the reliably working of optical fiber cable, communication cable.
At present, mainly contain aluminium-plastic tape as the screen layer of protection against the tide usefulness, the aluminium base tape thickness of this aluminium-plastic tape is generally two kinds of 0.20mm and 0.15mm, is made through combination process.The following deficiency of aluminium-plastic tape ubiquity of these two kinds of base band thickness specifications:
1, in the screen layer use of communications optical cable/cable, because the frictional force that composite band is produced by vertical bag mould and sizing mould the time increases, make the mechanical strength of composite band be subjected to certain destruction, produce stretching, demoulding, distortion even broken belt, cause communications optical cable/cable bad, the qualification rate of product is reduced.
2, aluminium-plastic tape is in the oversheath forming process of communications optical cable/cable, produce triangle alice, distortion at vertical bag overlap joint sealing place easily, and cause bonding sheath bonding not firm, cause communications optical cable/cable to play bag, infiltration, gas leakage, product quality is reduced, influence the stability and the reliability of transmission characteristic.
3, plastic-aluminum combined carries product self-adhesion is very serious, causes the zone face distortion, influences the making and the quality of communications optical cable/cable.
4, because base band thickness is thick, the production cost height, and be unfavorable for that vertical bag is crooked.
The content of invention
The objective of the invention is to avoid above-mentioned existing 0.20mm and 0.15mm is the deficiency of the aluminium-plastic tape of base band, a kind of preparation method that base band thickness is the inferior light smooth type aluminium-plastic tape of 0.12mm～0.05mm of making is provided, play bag, demoulding, infiltration, gas leakage, self-adhesion, broken belt, problem that production cost is high to solve communications optical cable/cable shield, improve product percent of pass.
Technical scheme of the present invention is achieved in that
Theory analysis and experiment showed, metal material in bending deformation process, its neutral surface outside will be subjected to tension, and the inboard will be subjected to compression; When material bending big more, radius of curvature R more hour, this tension that material is subjected to and compression are also just big more.When material was thick more, its outer surface deflection was big more, and required external force is also just big more, was unfavorable for vertical bag.When the outer surface strain surpasses the yield point σ of proportional limit to material
sAfter, it is that skid wire is until crackle that microgroove will appear in the surface.For this reason, key problem in technology of the present invention at first is that to select the high-quality aluminium foil for use be the base band material, then aluminium foil base band material is carried out plastic-aluminum combined PROCESS FOR TREATMENT, and detailed process is as follows:
1, select for use thickness be the aluminium foil of 0.12mm～0.05mm as base band, and carry out compound pre-treatment;
2, the one or both sides at aluminium base band push one deck plastic foil at least, and adopt composite roll roll extrusion heat seal simultaneously, be formed on aluminium base with on inferior light plucking shape smooth type plastics matsurface;
3, the plastics trade mark selected according to plastic foil, described texturing plastics matsurface is carried out back heat treated and typing, control its zone face temperature between plastics Vicat softening point and plastics fusing point, to improve the coarse state of frosting, improve peel strength, form the not inferior light smooth type aluminium-plastic tape of self-adhesion of interlayer.
Utilize the plastic-aluminum combined band structure of said method making, comprise the plastic membranous layer on aluminium base band and base band two sides, wherein the thickness of aluminium base band is 0.12mm～0.05mm, and the plastic membranous layer surface is inferior light smooth type matsurface.
The aluminium-plastic tape that utilizes said method to make, its surface texture changes along with the continuous rising of temperature, promptly when aluminium base with the temperature that goes up plastics when Vicat softening point is following, surface texture is the inferior light even surface that has roughness, when more than Vicat softening point, constantly raising along with the plastics temperature, the plastics roughness fades away, and the surface presents light frictional resistance face.
During employing composite roll roll extrusion heat seal described in the said method, paste the polytetrafluoroethylene (PTFE) adhesive tape at two of Compound rubber roller, or adopt the fluoroplastics roller, in order to avoid plastic melt is sticking around Compound rubber roller two when the roll extrusion heat seal.
When the composite roll described in the said method carried out the roll extrusion heat seal to aluminium base band, its surface temperature was 30～125 ℃, 30 ℃ of roll extrusion heat seal district temperature≤mould lip plastic melt temperature, and rolling pressure is 0.12～1.5Mpa, surface roughness is Ra 1.6～25 μ m.
The present invention has following advantage:
1, in light weight, economical with materials, production cost is low.
The present invention has alleviated weight because employing thickness is the aluminium base band of 0.12mm～0.05mm, greatly reduces production cost, compares with the aluminium base band of 0.15mm, and economical with materials 20%～66% is compared economical with materials 40%～75% with the aluminium base band of 0.20mm; The thin more base band of thickness is convenient to vertical bag bending more simultaneously, can be fully bonding with the sheath material.
2, frictional force is little, is easy to be difficult for broken belt by vertical bag mould and sizing mould.
The present invention is owing to adopted the not inferior light smooth type composite treatment process method of self-adhesion, make the mechanical performance of aluminium-plastic tape and service life under impregnable prerequisite, performance significantly improves, for the following road production process of making communications optical cable/cable provides reliable assurance, forming point between the matsurface that promptly has a roughness and vertical bag mould and the sizing mould contacts, frictional force is little, can pass through smoothly, solved in composite band and played the problem of bag, demoulding, broken belt easily, improved product percent of pass by vertical bag mould and sizing die stage.
3, peel strength height, humidity resistance is good.
Aluminium-plastic tape of the present invention owing to its surface texture along with variation of temperature changes, thereby after composite band is by vertical bag mould and sizing die stage, when entering in the extruder sheath mould, owing to making the matsurface on the aluminium-plastic tape, the rising of temperature disappears, contact with formation face between the PE oversheath, strengthened each other fully bonding, improved peel strength, promptly improved the bonding strength between aluminum-plastic shielding layer and the PE oversheath material, avoided lap seal not firm, gas leakage, the problem of infiltration has guaranteed the service life and the transmission characteristic of communications optical cable/cable.
4, self-adhesion not between the zone face is convenient to produce and is used.
Aluminium-plastic tape of the present invention has roughness owing to be inferior light even surface structure between the plastic foil, thereby after plastic-aluminum combined carries product rolling, can self-adhesion between zone face and the zone face.Guaranteed that making communications optical cable/cable is indeformable when operation unreels early stage, promptly zone face is straight, smooth, and is easy to use.
Description of drawings
Fig. 1 is curtain coating coating entire making process figure of the present invention
Fig. 2 is a curtain coating coating recombination process schematic diagram of the present invention
Fig. 3 is a heat posted single face texturing manufacturing process schematic diagram of the present invention
Fig. 4 is the two-sided texturing recombination process of a heat posted of the present invention schematic diagram
Fig. 5 is the cross-sectional structure figure of aluminium-plastic tape of the present invention
The specific embodiment
Particular content of the present invention can describe in further detail in conjunction with the accompanying drawings and embodiments.
Embodiment 1
Manufacturing process of the present invention is as follows:
1, select thickness be the aluminium foil of 0.12mm ± 0.005mm as aluminium base band, carry out curtain coating according to the flow process of Fig. 1 and be coated with compound pre-treatment.
The process of compound pre-treatment is: at first be to open the aluminium base roll coil of strip, then carry out the flattening of aluminium base band L and handle, then The pre-heat treatment.This base band preheating is to be undertaken by oily warm-up mill or electric heating roller, and its temperature is 90～220 ℃;
2, it is compound aluminium base band and plastics to be carried out the level and smooth extruding of inferior light, and with reference to Fig. 2, its recombination process is:
(1) aluminium base band L enters between the first compound dandy roll 1 and first composite roll 3.
This first compound dandy roll, 1 surface is nonmetallic materials, is that 40～95 fluoroplastics are made by shore hardness, and the first compound dandy roll 1 is provided with first chill roll 13; This composite roll 3 is a bitubular inner bag multi-head spiral cooling damping roller, and it is Ra 1.6～25 μ m that outer surface becomes roughness through surface treatment, and inferior light is 20～200 purpose detailed catalogue metallic roll.
(2) when aluminium base band L enters between the first compound dandy roll 1 and first composite roll 3, by first mould of plastics 2 plastic melt is coated with the aluminium base band A surface that is distributed between the first compound dandy roll 1 and first composite roll 3 from the lip narrow slit curtain coating of its mould, and control temperature and pressure, carry out the roll extrusion heat seal along circumferencial direction, make the level and smooth matsurface of inferior light of the plastics appearance formation plucking shape of A face.
This mould of plastics 2 is extruded flat mouthful mould for individual layer, and the temperature that plastic melt goes out die orifice is different and different according to the plastics trade mark.For example: present embodiment adopts the ethylene-acrylic acid copolymer resin of 3990 trades mark, and its melt temperature is 175～290 ℃; Heat seal district working surface temperature between this first compound dandy roll 1 and first composite roll 3 is 135～285 ℃, 30 ℃ of heat seal district temperature≤mould lip plastics temperature, and the pressure between two rollers is 0.15～1.5Mpa; The thickness of the plastic foil on this A face is 0.058 ± 0.013mm.
(3) vertically peel off A face composite band by first outlet roller 4 and leave first composite roll 3,, enter base band B face preheating 12 by adjusting device 5.
(4) through the B face base band after the preheating, enter between the second compound dandy roll 10 and second composite roll 8, second mould of plastics 9 is coated with plastic melt on the aluminium base band B surface that is distributed between the second compound dandy roll 10 and second composite roll 8 from mould lip curtain coating, and with the process conditions identical with the A face, carry out the roll extrusion heat seal along circumferencial direction, make the plastics appearance of B face form the plastic membranous layer of the inferior light smooth type of plucking shape.
This second composite roll 8 is consistent with the processing technology of first composite roll 3; This second mould of plastics 9 is identical with the structure of first mould of plastics 2; This second compound dandy roll 10 can be different with the material of the first compound dandy roll 1, and the second compound dandy roll 10 can not pasted the polytetrafluoroethylene (PTFE) adhesive tape at two of roller yet; This second compound dandy roll 10 is provided with second chill roll 11; The thickness of the plastic foil on this B face is 0.058 ± 0.013mm.
(5) finish the B dough model material of aluminium base band compound after, go out band by second outlet roller 7, guide roller 6, enter postprocessing working procedures.
Single face aluminium-plastic tape if desired as long as carry out wherein one side manufacturing process, can form single face EL type aluminium-plastic tape.
3, the surface back heat treated of composite band and plasticizing typing
With reference to Fig. 1, aluminium base band L of the present invention is after finishing the compound working procedure of above-mentioned plastic foil, enter compound postprocessing working procedures and carry out the back heat treated, control zone face temperature promptly 79～97 ℃, just can realize both can having made the roughness of inferior light matsurface to weaken between plastics Vicat softening point and plastics fusing point, can make the destruction of this roughness minimum as far as possible again, and improve plastics matsurface state, form new inferior light smooth type matsurface, to strengthen peel strength and plasticizing typing.After finishing the back heat treated, finish entire making process by subsequent handlings such as cooling, rollings successively again, form the not inferior light smooth type aluminium-plastic tape of self-adhesion.
Embodiment 2
Select for use thickness be the aluminium foil of 0.10 ± 0.005mm as aluminium base band, carry out aluminium-plastic tape according to the process of embodiment 1 and make, wherein:
The first compound dandy roll 1 adopts non-fluoroplastics roller, then must paste the polytetrafluoroethylene (PTFE) adhesive tape at two of non-fluorine rubber roll, in order to avoid follow-up plastic melt is sticking around the rubber roll two ends, guarantees normally carrying out of follow-up roll extrusion heat seal.
During the roll extrusion heat seal, if the heat seal district working surface temperature between the first compound dandy roll 1 and first composite roll 3 is 155～290 ℃, pressure between two rollers is 0.12～1.3Mpa, mould of plastics adopts 2 layers of co-extruding mould, adopt the plastics trade mark: 0910 resin, its melt temperature is 180～305 ℃, can form 2 layers of plastic foil on aluminium base band A face.
When carrying out the back heat treated, control zone face temperature is between plastics Vicat softening point and plastics fusing point, and promptly 81～100 ℃, finally producing base band thickness is the inferior light smooth type aluminium-plastic tape of 0.10mm.
Select for use base band thickness be the aluminium foil of 0.08 ± 0.005mm as aluminium base band, carry out according to the process of embodiment 1, wherein:
The first compound dandy roll 1 adopts the fluoroplastics roller.
During the roll extrusion heat seal, the heat seal district working surface temperature of establishing between the first compound dandy roll 1 and first composite roll 3 is 140～285 ℃, and the pressure between two rollers is 0.11～0.12Mpa.
Mould of plastics adopts 3 layers of co-extruding mould, and plastics adopt 30707 trades mark, and melt temperature is 185～310 ℃, can form 3 layers of plastic foil on aluminium base band single face.
When carrying out the back heat treated, control zone face temperature is between plastics Vicat softening point and plastics fusing point, and promptly 84～102 ℃, finally producing base band thickness is the inferior light smooth type aluminium-plastic tape of 0.08mm.
Embodiment 4
Select for use thickness be the aluminium foil of 0.05 ± 0.005mm as aluminium base band, carry out according to heat posted single face texturing manufacturing process shown in Figure 3:
1, aluminium base band L through guide roller 6, enters compound pretreatment procedure 15 by adjusting device 5, and oily hot-rolling or electric roller by The pre-heat treatment 17 carry out preheating, and its temperature is 60～280 ℃.
2, the aluminium base band L after the The pre-heat treatment enters between compound dandy roll 1 and the composite roll 3, the A that will make in advance, B plastic film roll 14,19 are sent into two faces of A, B of aluminium base band respectively simultaneously through face flattening device 16,18 simultaneously, and by compound dandy roll 1 and composite roll 3 roll extrusion, rolling pressure is 0.12～1.5Mpa, roughness is Ra 1.6～25 μ m, makes the plastics appearance of A face form the matsurface of inferior light plucking shape.
This A, B plastic film roll adopt plastics 30907 trades mark, and the plastic melt temperature is 135～180 ℃, can be one deck plastic foil, also can be the sandwich construction plastic foil.The outer surface shore hardness of this compound dandy roll 1 is that the rubber of 40～90 silicon rubber, fluoroplastics or heatproof＞150 ℃ is made, and rubber thickness is 15～30mm, middle logical cooling water, and the temperature of rubber appearance is by chill roll 11 controls.This composite roll 3 is a but damping roller of metal cooling, and appearance is processed into matsurface again behind the correct grinding of surface, forms the inferior light detailed catalogue of a kind of 40～120 orders metallic roll.
3, the plastic-aluminum band L of above-mentioned matsurface is sent to compound postprocessing working procedures 20 and carries out the back heat treated, control zone face temperature is between plastics Vicat softening point and plastics fusing point, and promptly 77～98 ℃, formation base band thickness is the inferior light smooth type aluminium-plastic tape of 0.05mm.
If without B face plastic film roll, then can be made into single face EL type aluminium-plastic tape.
Select for use thickness be the aluminium foil of 0.10 ± 0.005mm as aluminium base band, the plastics of film volume adopt 0903 trade mark: its melt temperature is 149～191 ℃.Wherein compound pre-treatment, compound post processing, A, B plastic film roll, compound dandy roll 1 and Compound rubber roller 3 are all identical with embodiment 4.Its recombination process is handled according to the two-sided texturing recombination process of heat posted shown in Figure 4.Promptly through the base band L after the compound pre-treatment by compound dandy roll 1 and Compound rubber roller 3 roll extrusion after, the frosting texturing device 21 that enters in the heat-collecting heat-preserving baking oven 22 carries out two-sided texturing processing successively, after handling through compound postprocessing working procedures 23 at last, make aluminium-plastic tape.
Tension force, water temperatures in this frosting texturing device 21 can be regulated automatically, and simultaneously heater is housed, temperature controls automatically, with the dancer rools surface temperature.Be provided with a plurality of texturing rollers in the texturing device 21, the surface temperature of each texturing roller is different, and be that to increase progressively gradually be 65～125 ℃, can realize that by this texturing device 21 effect that both can make the plastics appearance form the plucking shape reaches best, can avoid the effect of plastics roll banding again.Be provided with a temperature-adjusting device in this heat-collecting heat-preserving baking oven 22, regulate texturing collars border temperature, softening and plasticizing typing in order to the plastics of compound zone face.
With the plastic-aluminum combined band structure that said method of the present invention is made, comprise aluminium base with 24 and plastic membranous layer 25 on this base band above and below, plastic membranous layer 25 with aluminium base be with 24 between formation adhesive joint face 26.The thickness of this base band is the different size in 0.12mm～0.05mm ± 0.005mm scope, and plastic membranous layer 25 surfaces on the base band are level and smooth matsurfaces 27 of inferior light plucking shape.During use, the one side of this aluminium-plastic tape is wrapped in the skin of cable core, and another side and PE oversheath material close adhesion form bonding sheath.
The structure of this aluminium-plastic tape of the present invention changes along with the rising of temperature.Experiment shows, is Vicat softening point when following in the plastics temperature, and the surface of aluminium-plastic tape is inferior light even surface, when temperature surpasses more than the Vicat softening point, along with the continuous rising of temperature, the surperficial plastics of aluminium-plastic tape melt gradually, matsurface disappears thereupon, and the surface becomes the light resistance area.If with inferior light part of hand touch successively and light part, feel that obviously inferior light part is level and smooth, frictional force is little, and light partial frictional resistance is big.When making the screen layer of communications optical cable, cable, utilized this architectural feature of product of the present invention just, make it utilize the point of dull surface to contact with the sizing die stage at vertical bag mould, can smoothly pass through.And entering extruder sheath die stage, because the rising of temperature disappears original matsurface, contact with formation face between the PE oversheath, make the integral body that has formed a good bond between aluminum-plastic shielding layer and the PE oversheath, effectively stop the intrusion of moisture, guaranteed the service life and the transmission characteristic of communications optical cable/cable.
Effect analysis of the present invention and result of the test are as follows:
1, experiment shows, compares with other packaging material with the aluminium foil humidity resistance that base band thickness of the present invention is 0.12mm～0.05mm, has good humidity resistance, and is as shown in table 1.
Table 1 different materials lure humidity ratio
| Title material | Moisture permeability/g (m 2·24h) -1 | Title material | Moisture permeability/g (m 2·24h) -1 |
| 0.009mm aluminium foil | 1.08～10.70 | Moistureproof glassine paper | 50～70 |
| 0.013mm aluminium foil | 0.60～4.80 | | 20～50 |
| 0.018mm aluminium foil | 0～1.24 | 0.09mm polychloroethylene film | 7 |
| 0.025mm aluminium foil | 0～0.46 | 0.1mm polychloroethylene film | 4.8 |
| 0.03～0.15mm aluminium foil | 0 | 0.008～0.009 | 26 |
| Glassine paper | 1670 | Vinyl coating paper | 60～95 |
Table 1 data are from " aluminium process technology application manual " in January, 2005 front page.As seen from Table 1, adopt the aluminium foil of 0.15mm～0.03mm, its moisture permeability is 0, can prove, the base band thickness that the present invention adopts is that the aluminium foil of 0.12mm～0.05mm can reach moistureproof effect fully.
2, the present invention and existing aluminium base tape thickness are that the aluminium-plastic tape of 0.15mm and 0.20mm is compared, and economical with materials reduces cost greatly, and is as shown in table 2.
Table 2 the present invention and base band thickness are the comparison of 0.15mm and 0.20mm
| Specification (mm) | Every 100m 2Aluminum used m 3 | Save aluminium m than 0.2mm 3 | Save aluminium m than 0.15mm 3 | Than 0.20 material economy percentage | Than 0.15 material economy percentage |
| 0.2 | 0.02m 3 | ||||
| 0.15 | 0.015m 3 | 0.005 | 25％ | ||
| 0.12 | 0.012m 3 | 0.008 | 0.003 | 40％ | 20％ |
| 0.10 | 0.010m 3 | 0.010 | 0.005 | 50％ | 33.3％ |
| 0.08 | 0.008m 3 | 0.012 | 0.007 | 60％ | 46.7％ |
| 0.05 | 0.005m 3 | 0.015 | 0.010 | 75％ | 66.7％ |
As seen from Table 2, it is the aluminium foil base band of 0.12mm～0.05mm that the present invention adopts thickness, not only can guarantee its humidity resistance, and is that the aluminium base band economical with materials of 0.15mm and 0.20mm is up to 20%～75% than base band thickness.
3, the present invention compares the product percent of pass height with existing light aluminium-plastic tape, and is as shown in table 3.
The product percent of pass of table 3 the present invention and existing light face aluminium-plastic tape relatively
| Type | Broken belt rate % | Leak rate % | Demoulding | Moulding |
| Existing | 6％ | 8.5％ | Seriously | Relatively poor |
| Inferior light smooth type of the present invention | Do not have | Do not have | Seldom | Good |
As seen from Table 3, the present invention does not have broken belt, does not have gas leakage, formed product acceptance rate height.
4, the present invention compares than existing light face aluminium-plastic tape, and its rolling performance is good, as shown in table 4.
Table 4 the present invention than the rolling of existing light face aluminium-plastic tape after performance relatively
| Type | The interlayer hole | Zone face viscosity | Unreel the result |
| Existing light type | Little | The interlayer self-adhesion | Splitting is arranged, gross distortion |
| Inferior light smooth type of the present invention | Greatly | Interlayer is self-adhesion not | No splitting does not have distortion |
As seen from Table 4, the present invention is owing to adopt its inferior photo structure, make its rolling after interlayer the space is arranged, can self-adhesion, it is straight to guarantee that aluminium-plastic tape unreels, and does not produce distortion, the production efficiency height.
Claims (8)
1, a kind of preparation method of inferior light smooth type aluminium-plastic tape, carry out according to the following procedure:
(1) select for use thickness be the aluminium foil of 0.12mm～0.05mm ± 0.005mm as base band, and carry out compound pre-treatment;
(2) one or both sides at aluminium base band push one deck plastic foil at least, and adopt composite roll roll extrusion heat seal simultaneously, be formed on aluminium base with on inferior light plucking shape smooth type plastics matsurface;
(3) the plastics trade mark selected according to plastic foil, described plastics matsurface is carried out back heat treated and typing, control its zone face temperature between plastics Vicat softening point and plastics fusing point, to improve the matsurface state of frosting, improve peel strength, form the not inferior light smooth type aluminium-plastic tape of self-adhesion of interlayer.
2, a kind of plastic-aluminum combined band structure that utilizes claim 1 to make, the plastic membranous layer (25) that comprises aluminium base band (24) and base band two sides, the thickness that it is characterized in that aluminium base band (24) is 0.12mm～0.05mm ± 0.005mm, and plastic membranous layer (25) surface is inferior light smooth type matsurface.
3, a kind of aluminium-plastic tape that utilizes claim 1 to make, it is characterized in that described composite band surface texture changes along with variation of temperature, promptly when aluminium base with on the plastics temperature when Vicat softening point is following, surface texture is the inferior light even surface that has roughness, when temperature constantly raises more than Vicat softening point, the plastics roughness fades away, and the surface presents light frictional resistance face.
4, preparation method according to claim 1 is characterized in that described composite roll carries out the roll extrusion heat seal to aluminium base band, can carry out according to the following procedure:
(1) aluminium base band L through guide roller (6), enters compound pretreatment procedure (15) by adjusting device (5), carries out preheating by The pre-heat treatment (17), and making aluminium base band temperature is 60～280 ℃;
(2) the aluminium base band L after the The pre-heat treatment enters between compound dandy roll (1) and the composite roll (3), the A that will make in advance, B plastic film roll (14,19) are sent into two faces of A, B of aluminium base band respectively simultaneously through face flattening device (16,18) simultaneously, and, make the plastics appearance of A face form the matsurface of inferior light plucking shape by compound dandy roll (1) and composite roll (3) roll extrusion;
(3) aluminium-plastic tape is sent to compound postprocessing working procedures (20) and carries out the back heat treated, control zone face temperature forms single-face matt smooth type aluminium-plastic tape between plastics Vicat softening point and plastics fusing point.
5, preparation method according to claim 1 is characterized in that described composite roll carries out the roll extrusion heat seal to aluminium base band, can further carry out according to the following procedure:
(1) the base band L after the compound pre-treatment of process is by compound dandy roll (3) and Compound rubber roller (1) roll extrusion, and the frosting texturing device (21) that enters after the roll extrusion in the heat-collecting heat-preserving baking oven (22) carries out two-sided texturing processing successively;
(2) plastic cover after the texturing is carried out in the compound postprocessing working procedures (23), control zone face temperature forms two-sided inferior light smooth type aluminium-plastic tape between plastics Vicat softening point and plastics fusing point.
6, preparation method according to claim 5 is characterized in that tension force, the water temperature in the described texturing device (21) can be regulated automatically, and simultaneously heater is housed, temperature controls automatically, with the dancer rools surface temperature; The surface temperature difference of each the texturing roller in the texturing device (21), and be that to increase progressively gradually be 60～150 ℃, reach best with the effect that realizes both having made the plastics appearance form the plucking shape, can avoid the effect of plastics roll banding again.
7, preparation method according to claim 1, when it is characterized in that described composite roll carries out the roll extrusion heat seal to aluminium base band, its composite roll surface temperature is 30～125 ℃, 30 ℃ of roll extrusion heat seal district temperature≤mould lip plastic melt temperature, rolling pressure is 0.12～1.5Mpa, and surface roughness is Ra 1.6～25 μ m.
8, preparation method according to claim 1 when it is characterized in that adopting composite roll roll extrusion heat seal, is pasted the polytetrafluoroethylene (PTFE) adhesive tape at two of Compound rubber roller, or is adopted the fluoroplastics roller, in order to avoid plastic solution is sticking around Compound rubber roller two when the roll extrusion heat seal.
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| JPS59103794A (en) * | 1982-12-06 | 1984-06-15 | Nippon Seihaku Kk | Composite material for planographic printing plate |
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