CN107696652A - A kind of diaphragm for photosensitive dry film - Google Patents
A kind of diaphragm for photosensitive dry film Download PDFInfo
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- CN107696652A CN107696652A CN201710941735.8A CN201710941735A CN107696652A CN 107696652 A CN107696652 A CN 107696652A CN 201710941735 A CN201710941735 A CN 201710941735A CN 107696652 A CN107696652 A CN 107696652A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
- B32B27/08—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/32—Layered products comprising a layer of synthetic resin comprising polyolefins
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/32—Layered products comprising a layer of synthetic resin comprising polyolefins
- B32B27/327—Layered products comprising a layer of synthetic resin comprising polyolefins comprising polyolefins obtained by a metallocene or single-site catalyst
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/50—Properties of the layers or laminate having particular mechanical properties
- B32B2307/54—Yield strength; Tensile strength
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Abstract
A kind of diaphragm for photosensitive dry film, diaphragm are prepared using multi-layer co-extruded the tape casting or multi-layer co-extruded pulling method, and the diaphragm includes middle PP layer and two superficial layers, and one of superficial layer is PE release layers, and another superficial layer is skid resistant course；Middle PP layer is prepared by PP materials be molded completely；PE release layers are prepared by PE materials completely, and mould release is not added on the surface of the release layer；Skid resistant course is prepared by PE materials be molded completely, or is prepared and be molded by the copolymer or blend of PP materials and PE materials.The rigidity and pull resistance of multi-layer co-extruded PP diaphragms are had concurrently the invention enables diaphragm simultaneously, and dry film corrugation, dry film gummosis, dry film chromosphere etc. are significantly improved, it is high in machining efficiency, cost is low；Release surface does not add mould release, therefore causes the hidden danger such as photosensitive layer pollution, the decline of photosensitive dry film adhesive force in the absence of because of mould release migration；In the press mold stage, diaphragm stripping is noiseless, and winding is neat solid, no press mold failure phenomenon.
Description
Technical field
The present invention relates to a kind of diaphragm for photosensitive dry film.
Background technology
With the raising of people's health consciousness, operating environment requirements are also increasingly paid attention to.It is well known that in printed wire
In the manufacturing process of plate, formation line pattern can use and arrive photosensitive dry film.
Photosensitive dry film is by optics basement membrane, photosensitive colloid layer and diaphragm up of three layers, generally by extrusion die photosensitive
Glue is uniformly coated on optics basement membrane, is dried by tunnel type baking oven, and then diaphragm is combined on photosensitive layer, is obtained
To photosensitive dry film.Photosensitive dry film, in the case where heating pressurized conditions, is combined to photosensitive colloid layer using stripping diaphragm is preceding needed
On the copper face of printed wiring board, the resist layer or plating resist layer of pattern transfer are obtained.
The diaphragm of current photosensitive dry film, usually PE diaphragms or PP diaphragms, i.e., be made up of PE materials completely
Diaphragm or the diaphragm completely made of PP materials, two surfaces of both films be all smooth surface substantially, two surfaces
Roughness, off-type force etc. be all identical, in actual use, problems be present.
PE diaphragms：1）, it is more soft, when being attached to after the photosensitive layer of photosensitive dry film operating winding in a device, easily
There is the problem of Bamboo-shaped annular protrusion.2）, rigidity deficiency, because have after stretching shrink be inclined to, easily cause photosensitive layer by squeeze
Press gummosis；And diaphragm memory stretching, cause winding after Hui Song, easily occur during subsequent transportation use diaphragm with
Photosensitive dry film problem of misalignment.3）, tensile strength deficiency, particularly film laminator internal temperature be higher than 40 degree when, photosensitive dry film row
Enter the film laminator by diaphragm traction, PE diaphragms cause photosensitive dry film to be unable to synchronization marching, caused because elongated by hot-stretch
Press mold fails.4）, rigidity deficiency, it is compound, cutting and the press mold stage easily produce tiltedly wrinkle.5）, transparency it is higher, photosensitive dry film
Photosensitive layer small thickness difference or PE diaphragms and the compound slight pressure difference of photosensitive dry film, all easily produce annular
Aberration.6）Manufacture method uses film-blowing process, and production efficiency is low.
PP diaphragms：1）, rigidity it is larger, and self lubricity with great difficulty causes diaphragm slip layer, and winding is irregular；During pad pasting
Because frictional force is small, diaphragm winding is irregular, or even can not wind, and causes press mold to fail.2）Transparency is higher, with PE diaphragms
Equally, the small thickness difference of the photosensitive layer of photosensitive dry film or PP diaphragms and the compound slight pressure difference of photosensitive dry film,
All easily produce annular aberration.
Therefore, current PE diaphragms and PP diaphragms in use, all be present.Due to PP diaphragms
Inherent shortcoming gradually make it that making diaphragm using PE materials turns into main flow by market, but PE diaphragms can only be using blowing
Membrane process makes, the width and limited speed of making, and efficiency is low.Therefore, have developed multi-layer co-extruded based on PP
Diaphragm.
Multi-layer co-extruded PP diaphragms have good stretching resistance, have to dry film corrugation, dry film gummosis, dry film chromosphere etc. aobvious
Write improve, and it is high in machining efficiency, cost is low；But during press mold, due to photosensitive colloid and PP materials adhesiveness too
Greatly, produced during stripping " Pi Pi " noises, meanwhile, diaphragm winding looseness is irregular, causes press mold failure probability increase.Secondly,
The method that diaphragm release surface uses addition mould release, mould release can move to basement membrane and pollute photosensitive layer during press mold,
Photosensitive dry film adhesive force is caused to decline.
The content of the invention
The technical problem to be solved in the present invention is a kind of diaphragm for photosensitive dry film so that diaphragm has concurrently more simultaneously
The rigidity and pull resistance of layer co-extrusion PP diaphragms, are significantly improved to dry film corrugation, dry film gummosis, dry film chromosphere etc., Er Qiejia
Work efficiency high, cost are low；Release surface does not add mould release, therefore causes photosensitive layer pollution, sense in the absence of because of mould release migration
The hidden danger such as light dry film adhesive force decline；Moreover, in the press mold stage, diaphragm stripping is noiseless, and winding is neat solid, and no press mold loses
Lose phenomenon.
In order to solve the above-mentioned technical problem, the present invention takes following technical scheme：
A kind of diaphragm for photosensitive dry film, the diaphragm are prepared using multi-layer co-extruded the tape casting or multi-layer co-extruded pulling method
Obtain, the diaphragm includes middle PP layer and two superficial layers, and one of superficial layer is PE release layers, another superficial layer
For skid resistant course；
Middle PP layer is prepared by PP materials be molded completely；
PE release layers are prepared by PE materials be molded completely, and mould release is not added on the surface of the release layer；
Skid resistant course is prepared by PE materials be molded completely, or is prepared and be molded by the copolymer or blend of PP materials and PE materials.
The thickness of the middle PP layer accounts for the 30%-70% of the thickness of whole diaphragm.
The PE materials that the PE release layers use for one kind in high density PE, low density PE and linea low density PE,
Can be the mixture of any two kinds or three kinds, or metallocene mPE.
The modulus of the diaphragm is controlled between 300-6000pa.
When the skid resistant course prepares shaping by the copolymer or blend of PP materials and PE materials, in the copolymer or blending
In thing, the mass content of PE materials is more than or equal to the mass content of 5%, PP materials less than 95%.
The thickness of the diaphragm is 15-22 microns.
The thickness of the diaphragm is 17-20 microns, and the thickness of PE release layers is 3-8 microns.
The diaphragm is formed by least three-layer co-extruded.
The present invention passes through improvements over the prior art so that diaphragm simultaneously have concurrently multi-layer co-extruded PP diaphragms rigidity and
Pull resistance, dry film corrugation, dry film gummosis, dry film chromosphere etc. are significantly improved, and it is high in machining efficiency, cost is low；Simultaneously
Solve during press mold, because photosensitive colloid and PP materials adhesiveness are too big, caused by stripping " Pi Pi " noises, and
The problems such as diaphragm winding looseness is irregular, press mold failure.Secondly, release surface does not add mould release, thus in the absence of because from
Type agent migration causes the hidden danger such as photosensitive layer pollution, the decline of photosensitive dry film adhesive force.
Brief description of the drawings
Accompanying drawing 1 is the cross-sectional view of three-decker of the present invention；
Accompanying drawing 2 is the cross-sectional view of five-layer structure of the present invention.
Embodiment
For the feature of the present invention, technological means and the specific purposes reached, function can be further appreciated that, with reference to
Accompanying drawing is described in further detail with embodiment to the present invention.
As shown in Figure 1, present invention is disclosed a kind of diaphragm for photosensitive dry film, the diaphragm to be total to using multilayer
Squeeze the tape casting or multi-layer co-extruded pulling method is prepared, the diaphragm includes middle PP layer 2 and two superficial layers, one of table
Surface layer is PE release layers 1, and another superficial layer is skid resistant course 3；Middle PP layer is prepared by PP materials be molded completely；PE release layers
Prepared and be molded by PE materials completely, and mould release is not added on the surface of the release layer；Skid resistant course is prepared into by PE materials completely
Type, or prepared and be molded by the copolymer or blend of PP materials and PE materials.The diaphragm is formed by least three-layer co-extruded.
The thickness of the middle PP layer accounts for the 30%-70% of the thickness of whole diaphragm.The thickness of diaphragm is that 15-22 is micro-
Rice.The thickness of diaphragm is preferably controlled in 17-20 microns, and the thickness of PE release layers is 3-8 microns.It is found through experiments that, works as guarantor
When the thickness of cuticula and release layer is in above-mentioned thickness range, diaphragm has good release effect, while has good
Toughness and tear resistance.When the thickness of PE release layers is less than 3 microns, diaphragm produces " Pi Pi " noises, winding when peeling off
Relaxation, easily causes press mold to fail；When PE thickness degree is more than 8 microns, diaphragm tensile property declines, manufacture difficulty increase, into
Product rate is low.Therefore, the present invention by the thickness limit of PE release layers by 3-8 microns, making it have optimal release effect, together
When ensure the overall quality of diaphragm.
The PE materials that the PE release layers use for one kind in high density PE, low density PE and linea low density PE,
Can be the mixture of any two kinds or three kinds, or metallocene mPE.By using complete PE release layers, and not
Need to add mould release, you can prevent dry film adhesive force from declining.
The modulus of the diaphragm is controlled between 300-6000pa.Found through experiment, when the modulus of the diaphragm is less than
During 300pa, in compound, cutting, wrapup procedure, easy gauffer；When modulus is more than 6000pa, diaphragm compound tense easily produces
Raw folding line.When photosensitive dry film is pressed on printed substrate, can be produced when protecting UF membrane " Pi Pi " noises, and wind pine
Relax, be irregular, easily causing press mold to fail.
When the skid resistant course prepares shaping by the copolymer or blend of PP materials and PE materials, in the copolymer or blending
In thing, the mass content of PE materials is more than or equal to the mass content of 5%, PP materials less than 95%.When PE contents are less than 5%, or PP
Content is higher than 95%, then skid resistant course does not reach the winding requirement of dry protection film, i.e. diaphragm winding is slided, and causes winding not whole
Together, and directly result in press mold failure.
By the way that intermediate layer is set into PP layers, PP rigidity and pull resistance is mainly make use of, the mould of diaphragm can be improved
Amount, and thickness control is in the 30%-70% of gross thickness.When thickness is less than gross thickness 30%, the rigidity deficiency of diaphragm, pull resistance
Decline, compound tense easily wrinkles；When thickness is more than 70%, then the modulus of diaphragm is excessive, and rigidity is excessive, easily produces folding line, together
When, diaphragm winding is difficult during press mold, and causes press mold to fail.
As shown in Figure 1, form to be three-layer co-extruded, middle one layer is PP layers 2, and a superficial layer is PE release layers 1, one
Superficial layer is the skid resistant course 3 of PP and PE blends.As shown in Figure 2, formed for five-layer co-squeezing.Middle three layers are PP layers 2, and one
Individual superficial layer is PE release layers 1, and a superficial layer is the skid resistant course 3 of PP and PE copolymers.
It is illustrated below with specific embodiment.
Embodiment one
Prepared using three-layer co-extruded the tape casting.Pass through three-layer co-extruded T-shaped mould head, the protection of extrusion PE-PP-PP/PE copolymers
Film, gross thickness are 18 microns, and wherein PE release layers thickness is 6 microns, and intermediate layer PP layers are 6 microns, and PP forms with PE copolymers
Skid resistant course be 6 microns, wherein PE account for copolymer ratio be 5%.The process conditions used is, 280 degree of melting temperatures, extrusion
Speed is 450 ms/min.
2nd, the PE layer upper surfaces of said protection film are complex as photosensitive dry film towards photosensitive colloid layer.Compound condition：Pressure：
2.5 kg/cms, temperature：Normal temperature, speed：60 ms/min.
3rd, by special film laminator, with the pressure of 5.0 kg/cms, 110 degrees Celsius of temperature, 2.0 ms/min
Speed, while peel off diaphragm, while photosensitive dry film is combined to the surface of printed substrate, obtain needed for printed substrate
The resist layer or plating resist layer wanted.
Embodiment two
Prepared using three-layer co-extruded the tape casting.Pass through three-layer co-extruded T-shaped mould head, the protection of extrusion PE-PP-PP/PE copolymers
Film, gross thickness are 20 microns, and wherein PE release layers thickness is 5 microns, and intermediate layer PP layers are 10 microns, and PP forms with PE copolymers
Skid resistant course be 5 microns, wherein PE account for copolymer ratio be 10%.The process conditions used is, 280 degree of melting temperatures, extrusion
Speed is 450 ms/min.
2nd, the PE layer upper surfaces of said protection film are complex as photosensitive dry film towards photosensitive colloid layer.Compound condition：Pressure：
2.5 kg/cm, temperature：Normal temperature, speed：60 ms/min.
3rd, by special film laminator, with the pressure of 5.0 kg/cms, 110 degrees Celsius of temperature, 2.0 ms/min
Speed, while peel off diaphragm, while photosensitive dry film is combined to the surface of printed substrate, obtain needed for printed substrate
The resist layer or plating resist layer wanted.
Embodiment three
Prepared using three-layer co-extruded the tape casting.Pass through three-layer co-extruded T-shaped mould head, the protection of extrusion PE-PP-PP/PE copolymers
Film, gross thickness are 17 microns, and wherein PE release layers thickness is 7 microns, and intermediate layer PP layers are 8 microns, and PP forms with PE copolymers
Skid resistant course be 2 microns, wherein PE account for copolymer ratio be 20%.The process conditions used is, 280 degree of melting temperatures, extrusion
Speed is 450 ms/min.
2nd, the PE layer upper surfaces of said protection film are complex as photosensitive dry film towards photosensitive colloid layer.Compound condition：Pressure：
2.5 kg/cms, temperature：Normal temperature, speed：60 ms/min.
3rd, by special film laminator, with the pressure of 5.0 kg/cms, 110 degrees Celsius of temperature, 2.0 ms/min
Speed, while peel off diaphragm, while photosensitive dry film is combined to the surface of printed substrate, obtain needed for printed substrate
The resist layer or plating resist layer wanted.
Example IV
Prepared using three-layer co-extruded pulling method.By three-layer co-extruded T-shaped mould head, the compound of PE-PP-PP/PE blends is extruded
Layer, is stretched by vertical and horizontal, obtains the diaphragm that gross thickness is 17 microns, and wherein PE release layers thickness is 4 microns, middle
Layer PP layers are 7 microns, and the skid resistant course of PP and PE copolymers composition is 6 microns, and the ratio that wherein PE accounts for copolymer is 15%.Using
Process conditions be 285 degree of melting temperature, extruded velocity be 500 ms/min.
2nd, the PE layer upper surfaces of said protection film are complex as photosensitive dry film towards photosensitive colloid layer.Compound condition：Pressure：
2.5 kg/cms, temperature：Normal temperature, speed：60 ms/min.
3rd, by special film laminator, with the pressure of 5.0 kg/cms, 110 degrees Celsius of temperature, 2.0 ms/min
Speed, while peel off diaphragm, while photosensitive dry film is combined to the surface of printed substrate, obtain needed for printed substrate
The resist layer or plating resist layer wanted.
Embodiment five
Prepared using three-layer co-extruded pulling method.By three-layer co-extruded T-shaped mould head, the compound of PE-PP-PP/PE blends is extruded
Layer, is stretched by vertical and horizontal, obtains the diaphragm that gross thickness is 16 microns, and wherein PE release layers thickness is 3 microns, middle
Layer PP layers are 9 microns, and the skid resistant course of PP and PE blends composition is 4 microns, and the ratio that wherein PE accounts for blend is 20%.Using
Process conditions be 285 degree of melting temperature, extruded velocity be 500 ms/min.
2nd, the PE layer upper surfaces of said protection film are complex as photosensitive dry film towards photosensitive colloid layer.Compound condition：Pressure：
2.5 kg/cms, temperature：Normal temperature, speed：60 ms/min.
3rd, by special film laminator, with the pressure of 5.0 kg/cms, 110 degrees Celsius of temperature, 2.0 ms/min
Speed, while peel off diaphragm, while photosensitive dry film is combined to the surface of printed substrate, obtain needed for printed substrate
The resist layer or plating resist layer wanted.
Embodiment six
1st, prepared using three-layer co-extruded pulling method.By three-layer co-extruded T-shaped mould head, extrusion PE-PP-PP/PE blends are answered
Layer is closed, is stretched by vertical and horizontal, obtains the diaphragm that gross thickness is 22 microns, wherein PE release layers thickness is 8 microns, in
Interbed PP layers are 8 microns, and the skid resistant course of PP and PE blends composition is 6 microns, and the ratio that wherein PE accounts for blend is 40%.Adopt
Process conditions are 285 degree of melting temperature, and extruded velocity is 500 ms/min.
2nd, the PE layer upper surfaces of said protection film are complex as photosensitive dry film towards photosensitive colloid layer.Compound condition：Pressure：
2.5 kg/cms, temperature：Normal temperature, speed：60 ms/min.
3rd, by special film laminator, with the pressure of 5.0 kg/cms, 110 degrees Celsius of temperature, 2.0 ms/min
Speed, while peel off diaphragm, while photosensitive dry film is combined to the surface of printed substrate, obtain needed for printed substrate
The resist layer or plating resist layer wanted.
Comparative example 1：
Traditional PE diaphragms are combined on photosensitive dry film according to embodiment one, and pressure is worked into according to the method for embodiment one
Film terminates.
Comparative example 2：
Traditional PP diaphragms are combined on photosensitive dry film according to embodiment one, and press mold is worked into according to the method for embodiment one
Terminate.
Comparative example 3：
Multi-layer co-extruded being prepared and containing mould release PP diaphragms are combined on photosensitive dry film according to embodiment one, and
Method according to embodiment one is worked into press mold and terminated.
Evaluation method：
1st, the wrinkle resistance of dry film compound tense diaphragm：
◎：Compound tense is non-wrinkled.
○：Compound tense has fold once in a while, and incidence is no more than 5%.
× ：Compound tense often produces gauffer, and proportion is more than 5%.
2nd, diaphragm antioxidant cyclic projection performance
◎：Without projection during splitting winding.
○：Occasionally there is projection during splitting winding, incidence is no more than 5%.
× ：Often there is projection during splitting winding, proportion is more than 5%.
3rd, the winding easy degree of dry film：
According to the tension force of 4 kg/ms, 500 mm in width are cut, wind 200 meters of length, observation judge is carried out to cutting section.
◎：Cutting section is smooth after winding, and dislocation-free phenomenon, i.e. interlayer magnitude of misalignment are less than 0.5mm.
○：Section is cut after winding a little dislocation, i.e., interlayer magnitude of misalignment is more than 0.5mm, but is less than 1mm.
× ：Section out-of-flatness is cut after winding, has obvious inconsistent phenomenon, i.e. interlayer magnitude of misalignment is more than 1mm.
4th, performance is peeled off and wound to diaphragm：
In the press mold stage, diaphragm is peeled off while synchronous winding, observes and judge as follows.
◎：Diaphragm peel off when without " Pi Pi " noises, and diaphragm winding it is solid, end face is neat, and magnitude of misalignment is no more than
0.5mm。
○：Occasionally have during diaphragm stripping " Pi Pi " noises, and diaphragm winding is durable, end face is more neat, dislocation
Amount is no more than 1mm.
×：Diaphragm recurs that " Pi Pi " noises, and diaphragm winding looseness, end face is irregular, magnitude of misalignment when peeling off
More than 1mm.
5th, photosensitive dry film adhesive force
According to pressure：5.0 kg/cm temperature：110 degrees Celsius of speed：2.0 ms/min of press mold conditions, each sample
Dry film is combined on the copper face of printed substrate, and after static 30 minutes, spacing is drawn as the 100 of 1mm using sharp blade of carving knife
Individual grid, torn up using 3M test tapes with an angle of 90 degrees degree to test.
◎：Without dry film peeling
○：There is a small amount of dry film to peel off dew copper, but no more than 5%
×：There are a large amount of dry films to peel off dew copper, and more than 5%
Above test event and result see the table below：
It should be noted that these are only the preferred embodiments of the present invention, it is not intended to limit the invention, although with reference to reality
Apply example the present invention is described in detail, for those skilled in the art, it still can be to previous embodiment
Described technical scheme is modified, or equivalent substitution is carried out to which part technical characteristic, but all the present invention's
Within spirit and principle, any modification, equivalent substitution and improvements made etc., it should be included in the scope of the protection.
Claims (8)
1. a kind of diaphragm for photosensitive dry film, it is characterised in that the diaphragm uses multi-layer co-extruded the tape casting or multilayer
Co-extrusion pulling method is prepared, and the diaphragm includes middle PP layer and two superficial layers, and one of superficial layer is PE release layers,
Another superficial layer is skid resistant course；
Middle PP layer is prepared by PP materials be molded completely；
PE release layers are prepared by PE materials be molded completely, and mould release is not added on the surface of the release layer；
Skid resistant course is prepared by PE materials be molded completely, or is prepared and be molded to the copolymer or blend of PE materials from PP materials.
2. the diaphragm according to claim 1 for photosensitive dry film, it is characterised in that the thickness of the middle PP layer accounts for
The 30%-70% of the thickness of whole diaphragm.
3. the diaphragm according to claim 1 for photosensitive dry film, it is characterised in that the PE that the PE release layers use
Material is high density PE, low density PE and one kind in linea low density PE or any two kinds or three kinds of mixing
Thing, or metallocene mPE.
4. the diaphragm according to claim 1 for photosensitive dry film, it is characterised in that the modulus control of the diaphragm
Between 300-6000pa.
5. the diaphragm according to claim 1 for photosensitive dry film, it is characterised in that the skid resistant course from PP materials to
When the copolymer or blend of PE materials prepare shaping, in the copolymer or blend, the mass contents of PE materials is more than etc.
It is less than 95% in the mass content of 5%, PP materials.
6. the diaphragm according to claim 1 for photosensitive dry film, it is characterised in that the thickness of the diaphragm is
15-22 microns.
7. the diaphragm according to claim 6 for photosensitive dry film, it is characterised in that the thickness of the diaphragm is
17-20 microns, the thickness of PE release layers is 3-8 microns.
8. the diaphragm according to claim 1 for photosensitive dry film, it is characterised in that the diaphragm is by least three layers
It is co-extruded.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710941735.8A CN107696652A (en) | 2017-10-11 | 2017-10-11 | A kind of diaphragm for photosensitive dry film |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710941735.8A CN107696652A (en) | 2017-10-11 | 2017-10-11 | A kind of diaphragm for photosensitive dry film |
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| Publication Number | Publication Date |
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| CN107696652A true CN107696652A (en) | 2018-02-16 |
Family
ID=61184250
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710941735.8A Withdrawn CN107696652A (en) | 2017-10-11 | 2017-10-11 | A kind of diaphragm for photosensitive dry film |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110171178A (en) * | 2018-08-07 | 2019-08-27 | 江苏优珀斯材料科技有限公司 | A kind of multi-layer co-extruded composite high temperature resistant release film of film-blowing process production |
| CN111806023A (en) * | 2020-06-23 | 2020-10-23 | 江门市华龙膜材股份有限公司 | Polyethylene protective film for photosensitive dry film and preparation method thereof |
| CN112895650A (en) * | 2021-02-23 | 2021-06-04 | 青岛东海包装产业有限公司 | Polyethylene film for surface printing and compounding and preparation method thereof |
-
2017
- 2017-10-11 CN CN201710941735.8A patent/CN107696652A/en not_active Withdrawn
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110171178A (en) * | 2018-08-07 | 2019-08-27 | 江苏优珀斯材料科技有限公司 | A kind of multi-layer co-extruded composite high temperature resistant release film of film-blowing process production |
| CN111806023A (en) * | 2020-06-23 | 2020-10-23 | 江门市华龙膜材股份有限公司 | Polyethylene protective film for photosensitive dry film and preparation method thereof |
| CN112895650A (en) * | 2021-02-23 | 2021-06-04 | 青岛东海包装产业有限公司 | Polyethylene film for surface printing and compounding and preparation method thereof |
| CN112895650B (en) * | 2021-02-23 | 2022-07-19 | 青岛东海包装产业有限公司 | Polyethylene film for surface printing and compounding and preparation method thereof |
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Application publication date: 20180216 |
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