CN109383044A - A kind of method of dry protection film casting technique production - Google Patents
A kind of method of dry protection film casting technique production Download PDFInfo
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- CN109383044A CN109383044A CN201811162190.1A CN201811162190A CN109383044A CN 109383044 A CN109383044 A CN 109383044A CN 201811162190 A CN201811162190 A CN 201811162190A CN 109383044 A CN109383044 A CN 109383044A
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- protection film
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- dry protection
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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
- B29C71/00—After-treatment of articles without altering their shape; Apparatus therefor
- B29C71/02—Thermal after-treatment
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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
- B29C71/00—After-treatment of articles without altering their shape; Apparatus therefor
- B29C71/02—Thermal after-treatment
- B29C2071/022—Annealing
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2007/00—Flat articles, e.g. films or sheets
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- Thermal Sciences (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
Abstract
A kind of method of dry protection film casting technique production; raw material is selected: raw material polyethylene (PE), the polypropylene (PP) of selection suitable melt index; after raw material enters automatic mixing system mixture by conveying fan, chalk dust removing need to be removed by negative pressure blowback and electrostatic precipitator.By the feed particles of dedusting, respectively enter three extruder meltings, melt must be filtered in the linkage section of extruder and die head, non- fusant and crystal point is avoided to enter die head, to prevent product after-contraction from causing to deform, annealing shaping equipment need to be increased, shaping equipment is cooling using the heating of multiple groups roller and one group of roller；Product by monitoring is by the amplitude of oscillation, cutting edge with uniform thickness.It can be wound by the product handled above, necessity can be cut again as finished product dry protection film.The present invention has many advantages, such as that at low cost, crystal point is few, good appearance, is easy to control.
Description
Technical field
The present invention relates to a kind of preparation method of dry film optical protection layer, especially a kind of dry protection film casting technique is raw
The method of production.
Background technique
Dry film is generally divided into three layers, and one layer is dry protection film；Middle layer is that photopolymer layer and dry film have active layer；Separately
One layer is pet vector protective layer.
Photopolymer layer is a kind of gluey high-molecular compound that can be dissolved by an organic solvent, and is commonly used in circuit board etching.It is dry
Polymerization reaction can occur after ultraviolet irradiation for film layer, form a kind of stable material not reacted with etching solution.Base
In this characteristic, reach the function that wiring board accurately etches.
General PE protective film is more soft, when being attached to after the photosensitive layer of dry film operating winding in a device, is easy
Existing Bamboo-shaped annular protrusion problem；Its production method generally uses film-blowing process, and production efficiency is low.The rigidity of PP film is larger,
Self-lubrication with great difficulty leads to protective film slip layer again, winds irregular, and because frictional force is small when pad pasting, protective film winding is irregular,
It cannot even wind, press mold is caused to fail；It is the same secondly with PE film, the small thickness difference or PP protective film of dry film photosensitive layer
With the slight pressure difference of dry film, it is all easy to produce annular color difference.
Therefore, in use, all there are some problems in current PE protective film or PP protective film.Since PP is protected
The inherent shortcoming of film is gradually made to become mainstream using the protective film that PE material makes by market, but PE protective film can only be adopted
It is made of film-blowing process, makes width and limited speed, inefficiency.
Summary of the invention
The purpose of the present invention is to provide a kind of methods of dry protection film casting technique production, to solve above-mentioned background skill
The problem of being proposed in art.
To achieve the above object, the invention provides the following technical scheme:
A kind of method of dry protection film casting technique production, comprising the following steps:
1. raw material is selected: raw material polyethylene (PE), the polypropylene (PP) of selection suitable melt index, polyethylene (PE) selection are molten
Melt the raw material of index 2-10g/10min, the raw material that polypropylene (PP) selects melt index to be greater than 4-15g/10min, to guarantee to flow
The stabilization of dynamic property and processing；
2. raw material chalk dust removing system: after raw material enters automatic mixing system mixture by conveying fan, need to by negative pressure blowback and
Electrostatic precipitator removes chalk dust removing, is generated with achieving the purpose that reduce crystal point, in entire transmission process, pipeline need to select stainless steel
Pipe, to reduce the generation of friction and dust；
3. melting extrusion: by the feed particles of dedusting, respectively enteing three extruder meltings, every extruder inlet port increases
Nitrogen protection device；Wherein enter First extruder raw material point three Duan Jiawen, one section: 110 DEG C~180 DEG C, two sections: 180 DEG C
~230 DEG C, three sections: 230 DEG C~250 DEG C；Into second extruder raw material point, three Duan Jiawen, one section: 160 DEG C~220 DEG C, two
Section: 220 DEG C~260 DEG C, three sections: 260 DEG C~280 DEG C；Into third platform extruder raw material point three Duan Jiawen, one section: 150 DEG C~
170 DEG C, two sections: 170 DEG C~190 DEG C, three sections: 190 DEG C~220 DEG C；
4. filtering-tape casting: must be filtered to melt in the linkage section of extruder and die head, avoid non-fusant and crystalline substance
Point enters die head；It is by-pass filtration and second level refined filtration respectively；The by-pass filtration effect is that the biggish particulate contamination of filtering is (straight
Diameter in 1mm or more), second level refined filtration be use second level fine filtering device filter lesser particulate contamination (diameter 0.05mm with
On)；Enter die head by the melt body of filtering, squeezed out from die lip, dry protection film is formed on curtain coating chill roll, gained dry film is protected
Cuticula with a thickness of 12~15 μm；Dry protection film includes laminating layer, sandwich layer and backing layer, is calculated according to percentage thickness, described
Adhesion layer accounts for 10~30%, and the sandwich layer accounts for 40~80%, and surface layer accounts for 10~30%；
5, annealing sizing: to prevent product after-contraction from causing to deform, annealing shaping equipment need to be increased, shaping equipment uses multiple groups roller
Cylinder heating and one group of roller are cooling, and setting temperature is 40~60 DEG C, and cooling temperature is at 20~30 DEG C；Product warp after annealing sizing
The defect monitoring for crossing online electronic detector checks for the abnormal defect such as crystal point, broken hole, greasy dirt, scratch, dust, beyond control
Standard processed needs to reject；Powder injection molding standard is the different multiple-rank control quantity in diameter 0.2-0.6mm according to size, is greater than
0.6mm cannot allow；
6, the amplitude of oscillation-cuts-static elimination: the product by monitoring is by the amplitude of oscillation, cutting edge with uniform thickness.Meanwhile dry film is to quiet
Electricity is very sensitive, static eraser need to be used to carry out static elimination to product, can use static elimination or ion wind；
7, it winds: can be wound by the product handled above, necessity can be cut again as finished product dry protection film.
Preferably, by-pass filtration is strainer filtering in the step 4.
Preferably, second level fine filtering device includes that filtering always enters pipe in the step 4, total outlet pipe, three cartridge filters are filtered,
Three cartridge filters are arranged with annular array, and the periphery of three cartridge filters is surrounded with ring pipe, the cartridge filter of three cartridge filters
Always enter pipe with filtering after entrance connection and be connected to, the filter cartridge outlet of each cartridge filter ring pipe with circular three cartridge filters respectively
Connection, ring pipe are connected to the head end of three inclined tubes, are connected to after the tail end convergence of three inclined tubes with the total outlet pipe of filtering.
Preferably, the cartridge filter includes shell, central tube, it is equipped with inner cavity in the shell, it is described interior intracavitary to be equipped with
Central tube, the central tube are equipped with multiple flow orifices, and the central tube is equipped with multiple groups filtering disk；Shell outer end is equipped with
Top cover, the top cover are nested on central tube, and the shell inner end is equipped with cartridge filter entrance, and the shell outer end was equipped with
Cartridge outlet, the central tube inner end are closed and are connect with the spoke for being fixed on inner cavity, and central tube outer end and filter cartridge outlet connect
It is logical；The cartridge filter entrance always enters pipe with filtering and is connected to, and filter cartridge outlet is connected to ring pipe.
The filtering disk includes ceramic filter, metal filter screen, the outer edge packet of ceramic filter, metal filter screen
It is wrapped with retainer plate, retainer plate enables ceramic filter, metal filter screen coaxially be arranged in parallel, the ceramic filter, metal filtration
The center of net is equipped with core pipe through-hole, and melt filtration outlet is constituted between two core pipe through-holes, and filter melt outlet is connected to flow orifice.
Preferably, being equipped with spacer sleeve between the filtering disk.
Preferably, the aperture of the ceramic filter filter hole is 5 μm~10 μm；It is further preferred that the metal
The aperture in filter screen filtration hole is 15~30 μm.
Preferably, in the step 4, to guarantee that product thickness is uniform, when molding, is equipped with vacuum tank and air knife, to guarantee
Stabilization and uniform be attached to of the melt in forming process are cast on chill roll；Air knife wind pressure can be 3~8bar, knives gap:
1.2mm-1.3mm, air knife speed: 80%, vacuum tank wind speed: 35%, vacuum tank vacuum degree is -0.3~2mbar；It is thick to improve
Uniformity is spent, automatic bolt feedback can be added on die head, online thickness gauge is equipped with after chill roll, by manually and certainly
Dynamic control cooperation, adjustment diebolt is elastic, guarantees that film is uniform；Under the action of this system, thickness uniformity coefficient is being produced
It is automatic in the process to improve.
Preferably, being cast the roll surface temperature of chill roll in the step 4 are as follows: 30 DEG C~50 DEG C.
Preferably, the step 5 in the middle of the roller heating is by way of being passed through hot water in roller for film heating；Institute
Stating roller cooling is to be cooled down by way of being passed through recirculated cooling water in roller for film.
Preferably, the raw material chalk dust removing system includes dedusting cabin, blending bucket is set at the top of dedusting cabin, in dedusting cabin
It was equipped with electrostatic precipitator, the side in dedusting cabin is equipped with negative tube, and dedusting bilge portion is respectively by the charging with three extruders
Bucket connection is equipped with negative pressure anti-blowpipe in the place that dedusting bilge portion is connect with feed hopper.
The present invention has many advantages, such as that at low cost, crystal point is few, good appearance, is easy to control；Suitable for single layer and multilayer raw material
Co-extrusion can be suitable for the dry protection film processing that polyethylene (PE), polypropylene (PP) or PP/PE are blended simultaneously.And it produced
The generation of control crystal point is easier in journey, the thickness uniformity is good, speed is fast, and it is high-efficient, it can eaily adjust dry film
Protective film different width and thickness requirements.
Detailed description of the invention
Fig. 1 is the principle of the present invention figure；
Fig. 2 is the structural schematic diagram of second level fine filtering device in the present invention；
Fig. 3 is the cross-sectional view of A-A in Fig. 2；
Fig. 4 is the structural schematic diagram of cartridge filter in the present invention；
Fig. 5 is the structural schematic diagram that disk is filtered in the present invention；
Fig. 6 is the top view that disk is filtered in the present invention.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
A kind of dry protection film, including dry protection film, the dry protection film with a thickness of 12~15 μm；The dry film
Protective film includes laminating layer, sandwich layer and backing layer, calculates the adhesion layer according to percentage thickness and accounts for 10~30%, the sandwich layer accounts for
40~80%, surface layer accounts for 10~30%.
A kind of method of dry protection film casting technique production, comprising the following steps:
1. raw material is selected: raw material polyethylene (PE), the polypropylene (PP) of selection suitable melt index, polyethylene (PE) selection are molten
Melt the raw material of index 2-10g/10min, the raw material that polypropylene (PP) selects melt index to be greater than 4-15g/10min, to guarantee to flow
The stabilization of dynamic property and processing.
2. raw material chalk dust removing system 1: including dedusting cabin, blending bucket 21 is equipped at the top of dedusting cabin, dedusting was equipped in cabin
Electrostatic precipitator 2.The side in dedusting cabin is equipped with negative tube 22, and dedusting bilge portion is respectively by the feed hopper 31 with three extruders
Connection.Negative pressure anti-blowpipe 11 is equipped in the place that dedusting bilge portion is connect with feed hopper.
After raw material enters 21 mixture of blending bucket of automatic mixing system 1 by conveying fan, sluice gate 23 is opened, in dedusting cabin
In whereabouts, chalk dust removing is removed by electrostatic precipitator 2, electrostatic precipitator 2 is built using the electrode plate with high voltage that muti-piece is placed vertically
The form dedusting of vertical electric field, the power supply of electrostatic precipitator are made of control cabinet, step-up transformer and rectifier.The electricity of power supply output
Pressure height also has a significant impact to efficiency of dust collection.Therefore, electrostatic precipitator working voltage need to keep 40 1 75kV or even 100kV with
On.Most of grits pass through in corona outskirt, obtain negative electrical charge, are finally deposited on anode plate, when inspection dust gathers one
It is collected after determining degree.When by electrostatic precipitator, continue in dropping process in feed particles, sluice gate 23,25 is closed, and is born
Pressure pipe 22 generates negative pressure, negative pressure anti-blowpipe blowback, further dedusting purpose.
Dedusting can reduce the purpose of crystal point generation, and in entire transmission process, pipeline 3 need to select stainless steel tube, to reduce
Friction and the generation of dust.
3. feed particles of the melting extrusion Jing Guo dedusting respectively enter three extruder meltings, every extruder inlet port
Increase nitrogen protection device；Wherein enter First extruder raw material point three Duan Jiawen, one section: 110 DEG C~180 DEG C, two sections:
180 DEG C~230 DEG C, three sections: 230 DEG C~250 DEG C；Into second extruder raw material point, three Duan Jiawen, one section: 160 DEG C~220
DEG C, two sections: 220 DEG C~260 DEG C, three sections: 260 DEG C~280 DEG C；Into third platform extruder raw material point three Duan Jiawen, one section:
150 DEG C~170 DEG C, two sections: 170 DEG C~190 DEG C, three sections: 190 DEG C~220 DEG C.By controlling the temperature of three extruders, come
The temperature for controlling plastic melt, in such tape casting, convenient for forming film in homogeneous thickness, and laminating layer, sandwich layer and back
Layer combines more closely, and film tensile strength, breaking strength are higher.
4. filtering-tape casting: must be filtered to melt in extruder 8 and the linkage section of die head 9, avoid not melting
Object and crystal point enter die head 9；It is by-pass filtration and second level refined filtration respectively, by-pass filtration is strainer filtering, second level fine filtering device 6
Always enter pipe 67 including filtering, filters total outlet pipe, three cartridge filters 62, three cartridge filters are arranged with annular array, three mistakes
The periphery of filter cylinder is surrounded with ring pipe 65, and the cartridge filter entrance 621 of three cartridge filters always enters pipe with filtering after being connected to and is connected to, each
The filter cartridge outlet 628 of cartridge filter is connected to the ring pipe 65 around three cartridge filters respectively, the head of ring pipe and three inclined tubes
61 connection of end is connected to after the tail end convergence of three inclined tubes 68 with the total outlet pipe 69 of filtering.
The cartridge filter includes shell 629, central tube 626, is equipped with inner cavity 623, the inner cavity 623 in the shell 629
Interior to be equipped with central tube 626, the central tube is equipped with multiple flow orifices 627, and the central tube is equipped with multiple groups filtering disk
625；629 outer end of shell is equipped with top cover 624, and the top cover 624 is nested on central tube 626, and the shell inner end is equipped with
Cartridge filter entrance 621, the shell outer end are equipped with filter cartridge outlet 628,626 inner end of central tube closing and be fixed on
It is connected at the center of the spoke 630 of inner cavity 623,626 outer end of central tube is connected to filter cartridge outlet 628；The cartridge filter entrance
621, which always enter pipe with filtering, is connected to, and filter cartridge outlet 628 is connected to ring pipe 65.
Filtering disk includes ceramic filter 6251, metal filter screen 6252, the outer rim of ceramic filter, metal filter screen
End is enclosed with retainer plate 6250, and retainer plate enables ceramic filter, metal filter screen coaxially be arranged in parallel, the ceramic filter,
The center of metal filter screen is equipped with core pipe through-hole 6253, melt filtration outlet 6255 is constituted between two core pipe through-holes 6253, filter is molten
Body outlet 6255 is connected to flow orifice 627.
Solution is entered in cavity 623 by cartridge filter entrance 621, after then solution filters the filtering of disk 625 by multiple groups,
Enter the flow orifice 627 on central axis, flow orifice 627 and cartridge filter bottom filter cartridge outlet 628 by filter melt outlet 6255
Connection, therefore solution is entered in ring pipe 65 by filter cartridge outlet outflow, is come out after convergence from the total outlet pipe 69 of filtering and is entered curtain coating
Die head processing.
It filters and is equipped with spacer sleeve 6256 between disk 625.The aperture of the ceramic filter filter hole is 5 μm~10 μm；
It is further preferred that the aperture of the metal filter screen filter hole is 15~30 μm.
The by-pass filtration effect is that (for diameter in 1mm or more), second level refined filtration is to use to the biggish particulate contamination of filtering
Second level fine filtering device filters lesser particulate contamination, and (diameter is in 0.05mm or more)；Enter die head by the melt body of filtering, from
Die lip squeeze out, curtain coating chill roll 4 on dry protection film, gained dry protection film with a thickness of 12~15 μm；Dry protection film
Including laminating layer, sandwich layer and backing layer, being calculated according to percentage thickness, the adhesion layer accounts for 10~30%, and the sandwich layer accounts for 40~
80%, surface layer accounts for 10~30%.
To guarantee that product thickness is uniform, vacuum tank and air knife are equipped with when molding, to guarantee that melt is steady in forming process
Fixed and uniform be attached to is cast on chill roll 4, is cast the roll surface temperature of chill roll are as follows: 30 DEG C~50 DEG C.Air knife wind pressure can for 3~
8bar, knives gap: 1.2mm~1.3mm, air knife speed: 80%, vacuum tank wind speed: 35%, vacuum tank vacuum degree be -0.3~
2mbar；To improve the thickness uniformity, automatic bolt feedback can be added on die head, is equipped with online thickness after being cast chill roll 4
Detector 91, online Thickness measuring instrument 91 tests the film thickness passed laterally through, then thickness signal is transmitted to computer, calculates
It is shown after machine processing in display, facilitates artificial regulatory film thickness.Simultaneous computer transmits a signal to die head automatic control
System, finely tunes film interlabial gap, and film caliper uniformity will reach optimum efficiency with the shorter working time.By manually and certainly
Dynamic control cooperation, adjustment diebolt is elastic, guarantees that film is uniform.Under the action of this system, thickness uniformity coefficient is being produced
It is automatic in the process to improve.
5, annealing sizing: to prevent product after-contraction from causing to deform, annealing shaping equipment 92 need to be increased, shaping equipment of annealing
92 are heated using multiple groups roller, and one group of roller is cooling, and setting temperature is 40~60 DEG C, and cooling temperature is at 20~30 DEG C；Roller adds
Heat is by way of being passed through hot water in roller for film heating；The roller cooling is cold by being passed through circulation in roller
But the mode of water is film cooling.Product after annealing sizing is monitored by the defect of online electronic detector 93, is checked for
The exception defect such as crystal point, broken hole, greasy dirt, scratch, dust needs to reject beyond control standard；Powder injection molding standard is diameter
According to the different multiple-rank control quantity of size in 0.2-0.6mm, cannot allow greater than 0.6mm.
6, the amplitude of oscillation-cuts-static elimination: the product by monitoring is by the amplitude of oscillation, cutting edge with uniform thickness.Meanwhile dry film
It is very sensitive to electrostatic, static eraser need to be used to carry out static elimination to product, static elimination or ion can be used
Wind.
7, it winds: can be wound by the product handled above, necessity can be cut again as finished product dry protection film.
Comparison is as follows before and after chalk dust removing system and the use of second level refined filtration:
Casting unit to all deflector rolls of rolling unit are needed by special surface treatment, and guide roller surface is sprayed using Teflon
Mode is handled, to avoid film that sliding occurs with deflector roll and scratches.
For guaranteed quality, it is necessary to have 10000 grades or more of cleaning shop, have dedusting, nitrogen-sealed and essence filtering etc.
Crystal point control measure have annealing sizing and guarantee dimensional stability, have thickness feedback and static elimination.
It is obvious to a person skilled in the art that invention is not limited to the details of the above exemplary embodiments, Er Qie
In the case where without departing substantially from spirit or essential attributes of the invention, the present invention can be realized in other specific forms.Therefore, no matter
From the point of view of which point, the present embodiments are to be considered as illustrative and not restrictive, and the scope of the present invention is by appended power
Benefit requires rather than above description limits, it is intended that all by what is fallen within the meaning and scope of the equivalent elements of the claims
Variation is included within the present invention.Any reference signs in the claims should not be construed as limiting the involved claims.
In addition, it should be understood that although this specification is described in terms of embodiments, but not each embodiment is only wrapped
Containing an independent technical solution, this description of the specification is merely for the sake of clarity, and those skilled in the art should
It considers the specification as a whole, the technical solutions in the various embodiments may also be suitably combined, forms those skilled in the art
The other embodiments being understood that.
Claims (10)
1. a kind of method of dry protection film casting technique production, it is characterised in that the following steps are included:
1) raw material is selected: raw material polyethylene (PE), the polypropylene (PP) of selection suitable melt index, and polyethylene (PE) selection is molten
Melt the raw material of index 2-10g/10min, the raw material that polypropylene (PP) selects melt index to be greater than 4-15g/10min, to guarantee to flow
The stabilization of dynamic property and processing；
2) raw material chalk dust removing system: after raw material enters automatic mixing system mixture by conveying fan, need to by negative pressure blowback and
Electrostatic precipitator removes chalk dust removing, is generated with achieving the purpose that reduce crystal point, in entire transmission process, pipeline need to select stainless steel
Pipe, to reduce the generation of friction and dust；
3) melting extrusion: by the feed particles of dedusting, three extruder meltings are respectively enterd, every extruder inlet port increases
Nitrogen protection device；Wherein enter First extruder raw material point three Duan Jiawen, one section: 110 DEG C~180 DEG C, two sections: 180 DEG C
~230 DEG C, three sections: 230 DEG C~250 DEG C；Into second extruder raw material point, three Duan Jiawen, one section: 160 DEG C~220 DEG C, two
Section: 220 DEG C~260 DEG C, three sections: 260 DEG C~280 DEG C；Into third platform extruder raw material point three Duan Jiawen, one section: 150 DEG C~
170 DEG C, two sections: 170 DEG C~190 DEG C, three sections: 190 DEG C~220 DEG C；
4) filtering-tape casting: melt must be filtered in the linkage section of extruder and die head, avoids non-fusant and crystalline substance
Point enters die head；It is by-pass filtration and second level refined filtration respectively；The by-pass filtration effect is that the biggish particulate contamination of filtering is (straight
Diameter in 1mm or more), second level refined filtration be use second level fine filtering device filter lesser particulate contamination (diameter 0.05mm with
On)；Enter die head by the melt body of filtering, squeezed out from die lip, dry protection film is formed on curtain coating chill roll, gained dry film is protected
Cuticula with a thickness of 12~15 μm；Dry protection film includes laminating layer, sandwich layer and backing layer, is calculated according to percentage thickness, described
Adhesion layer accounts for 10~30%, and the sandwich layer accounts for 40~80%, and surface layer accounts for 10~30%；
5) annealing sizing: to prevent product after-contraction from causing to deform, annealing shaping equipment need to be increased, shaping equipment uses multiple groups roller
Cylinder heating and one group of roller are cooling, and setting temperature is 40~60 DEG C, and cooling temperature is at 20~30 DEG C；Product warp after annealing sizing
The defect monitoring for crossing online electronic detector checks for the abnormal defect such as crystal point, broken hole, greasy dirt, scratch, dust, beyond control
Standard processed needs to reject；Powder injection molding standard is the different multiple-rank control quantity in diameter 0.2-0.6mm according to size, is greater than
0.6mm cannot allow；
6) amplitude of oscillation-cuts-static elimination: the product by monitoring is by the amplitude of oscillation, cutting edge with uniform thickness；
Meanwhile dry film is very sensitive to electrostatic, static eraser need to be used to carry out static elimination to product, can use electrostatic
Elimination or ion wind；
7) it winds: can be wound by the product handled above, necessity can be cut again as finished product dry protection film.
2. a kind of method of dry protection film casting technique production according to claim 1, it is characterised in that the step
4) by-pass filtration is strainer filtering in.
3. a kind of method of dry protection film casting technique production according to claim 1, it is characterised in that the step
4) second level fine filtering device includes that filtering always enters pipe in, filters total outlet pipe, three cartridge filters, three cartridge filters are with annular array
Arrangement, the periphery of three cartridge filters are surrounded with ring pipe, always enter Guan Lian with filtering after the cartridge filter entrance connection of three cartridge filters
Logical, the filter cartridge outlet of each cartridge filter is connected to the ring pipe around three cartridge filters respectively, ring pipe and three inclined tubes
Head end connection is connected to after the tail end convergence of three inclined tubes with the total outlet pipe of filtering.
4. a kind of method of dry protection film casting technique production according to claim 3, it is characterised in that the filtering
Cylinder includes shell, central tube, inner cavity is equipped in the shell, described interior intracavitary equipped with central tube, the central tube is equipped with more
A flow orifice, the central tube are equipped with multiple groups filtering disk；Shell outer end is equipped with top cover, and the top cover is nested in central tube
On, the shell inner end is equipped with cartridge filter entrance, and the shell outer end is equipped with filter cartridge outlet, the central tube inner end seals
It closes and is connect with the spoke for being fixed on inner cavity, central tube outer end is connected to filter cartridge outlet；The cartridge filter entrance and filtering are total
Enter pipe connection, filter cartridge outlet is connected to ring pipe.
5. a kind of method of dry protection film casting technique production according to claim 4, it is characterised in that the filtering
Disk includes ceramic filter, metal filter screen, ceramic filter, metal filter screen outer edge be enclosed with retainer plate, it is fixed
Circle enable ceramic filter, metal filter screen coaxially be arranged in parallel, the ceramic filter, metal filter screen center be equipped with core pipe
Through-hole, melt filtration outlet is constituted between two core pipe through-holes, and filter melt outlet is connected to flow orifice.
6. a kind of method of dry protection film casting technique production according to claim 5, it is characterised in that the filtering
Spacer sleeve is equipped between disk.
7. a kind of method of dry protection film casting technique production according to claim 5, it is characterised in that the ceramics
The aperture of filter filter hole is 5 μm~10 μm；It is further preferred that the aperture of the metal filter screen filter hole is 15~30
μm。
8. a kind of method of dry protection film casting technique production according to claim 1, it is characterised in that the step
4) in, to guarantee that product thickness is uniform, vacuum tank and air knife are equipped with when molding, with guarantee stabilization of the melt in forming process and
It is uniformly attached on curtain coating chill roll；Air knife wind pressure can be 3~8bar, knives gap: 1.2mm-1.3mm, air knife speed:
80%, vacuum tank wind speed: 35%, vacuum tank vacuum degree is -0.3~2mbar；To improve the thickness uniformity, can add on die head
Add automatic bolt to feed back, online thickness gauge is equipped with after chill roll, by manually and automatically controlling cooperation, adjusts die head spiral shell
Bolt is elastic, guarantees that film is uniform；Under the action of this system, thickness uniformity coefficient improves automatically in process of production.
9. a kind of method of dry protection film casting technique production according to claim 1, it is characterised in that in step 4)
It is cast the roll surface temperature of chill roll are as follows: 30 DEG C~50 DEG C.
10. a kind of method of dry protection film casting technique production according to claim 1, it is characterised in that the step
5) in the middle of the roller heating is by way of being passed through hot water in roller for film heating；The roller cooling is by roller
The mode of recirculated cooling water is passed through as film cooling.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811162190.1A CN109383044A (en) | 2018-09-30 | 2018-09-30 | A kind of method of dry protection film casting technique production |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811162190.1A CN109383044A (en) | 2018-09-30 | 2018-09-30 | A kind of method of dry protection film casting technique production |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109383044A true CN109383044A (en) | 2019-02-26 |
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| CN201811162190.1A Pending CN109383044A (en) | 2018-09-30 | 2018-09-30 | A kind of method of dry protection film casting technique production |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110421942A (en) * | 2019-08-02 | 2019-11-08 | 陈八弟 | A kind of label film and preparation method thereof |
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| CN104385557A (en) * | 2014-11-03 | 2015-03-04 | 广东仕诚塑料机械有限公司 | Disc filter capable of eliminating crystal points of protective film |
| CN105922689A (en) * | 2016-05-05 | 2016-09-07 | 永新股份（黄山）包装有限公司 | High-viscosity self-adhesion surface protection film and preparation method thereof |
| CN107933025A (en) * | 2017-11-02 | 2018-04-20 | 上海紫江新材料科技有限公司 | A kind of cast polypropylene film and preparation method thereof |
| CN108582824A (en) * | 2018-04-25 | 2018-09-28 | 湛江包装材料企业有限公司 | One kind resisting hardened super cool cigarette item packet BOPP film and preparation method thereof |
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| CN203663535U (en) * | 2013-11-18 | 2014-06-25 | 3M材料技术（广州）有限公司 | Filter disk fixing component and filter disk |
| CN104385557A (en) * | 2014-11-03 | 2015-03-04 | 广东仕诚塑料机械有限公司 | Disc filter capable of eliminating crystal points of protective film |
| CN105922689A (en) * | 2016-05-05 | 2016-09-07 | 永新股份（黄山）包装有限公司 | High-viscosity self-adhesion surface protection film and preparation method thereof |
| CN107933025A (en) * | 2017-11-02 | 2018-04-20 | 上海紫江新材料科技有限公司 | A kind of cast polypropylene film and preparation method thereof |
| CN108582824A (en) * | 2018-04-25 | 2018-09-28 | 湛江包装材料企业有限公司 | One kind resisting hardened super cool cigarette item packet BOPP film and preparation method thereof |
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| CN110421942A (en) * | 2019-08-02 | 2019-11-08 | 陈八弟 | A kind of label film and preparation method thereof |
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