CN116637782A - Method for producing rolled laminate - Google Patents
Method for producing rolled laminate Download PDFInfo
- Publication number
- CN116637782A CN116637782A CN202210230657.1A CN202210230657A CN116637782A CN 116637782 A CN116637782 A CN 116637782A CN 202210230657 A CN202210230657 A CN 202210230657A CN 116637782 A CN116637782 A CN 116637782A
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- Prior art keywords
- carrier tape
- composite film
- carrier
- ratio
- manufacturing
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 31
- 239000002184 metal Substances 0.000 claims abstract description 62
- 229910052751 metal Inorganic materials 0.000 claims abstract description 62
- 239000002131 composite material Substances 0.000 claims abstract description 53
- 239000011888 foil Substances 0.000 claims abstract description 31
- 238000000034 method Methods 0.000 claims abstract description 28
- 229920000642 polymer Polymers 0.000 claims abstract description 22
- 239000000463 material Substances 0.000 claims description 19
- 238000005096 rolling process Methods 0.000 abstract description 2
- 239000010410 layer Substances 0.000 description 23
- 229910000831 Steel Inorganic materials 0.000 description 18
- 239000010959 steel Substances 0.000 description 18
- 238000003825 pressing Methods 0.000 description 14
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 10
- 239000002861 polymer material Substances 0.000 description 10
- 239000011889 copper foil Substances 0.000 description 9
- 230000000052 comparative effect Effects 0.000 description 8
- 238000010438 heat treatment Methods 0.000 description 8
- 238000007363 ring formation reaction Methods 0.000 description 6
- 239000004642 Polyimide Substances 0.000 description 4
- 239000011248 coating agent Substances 0.000 description 4
- 238000000576 coating method Methods 0.000 description 4
- 229920001721 polyimide Polymers 0.000 description 4
- 239000000758 substrate Substances 0.000 description 4
- 229920000106 Liquid crystal polymer Polymers 0.000 description 3
- 239000004977 Liquid-crystal polymers (LCPs) Substances 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
- 239000002904 solvent Substances 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 230000000712 assembly Effects 0.000 description 2
- 238000000429 assembly Methods 0.000 description 2
- 238000007688 edging Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000012528 membrane Substances 0.000 description 2
- 238000006116 polymerization reaction Methods 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- 229910001374 Invar Inorganic materials 0.000 description 1
- 229910000589 SAE 304 stainless steel Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000005485 electric heating Methods 0.000 description 1
- 238000004049 embossing Methods 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 238000009396 hybridization Methods 0.000 description 1
- 239000011229 interlayer Substances 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229920013657 polymer matrix composite Polymers 0.000 description 1
- 239000011160 polymer matrix composite Substances 0.000 description 1
- 239000013047 polymeric layer Substances 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 238000000935 solvent evaporation Methods 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
- 238000007655 standard test method Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000009864 tensile test Methods 0.000 description 1
- 229920006259 thermoplastic polyimide Polymers 0.000 description 1
- 229920001187 thermosetting polymer Polymers 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
- 230000037303 wrinkles Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
- B05D3/04—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by exposure to gases
- B05D3/0406—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by exposure to gases the gas being air
- B05D3/0413—Heating with air
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Landscapes
- Laminated Bodies (AREA)
- Winding Of Webs (AREA)
- Moulding By Coating Moulds (AREA)
Abstract
The invention provides a method for manufacturing a rolled laminated body, which comprises the following steps: providing a composite film, wherein the composite film comprises a metal foil and a polymer layer, the metal foil is provided with a first metal surface and a second metal surface opposite to the first metal surface, and the polymer layer is positioned on the second metal surface; providing a carrier tape, wherein the carrier tape is provided with a first carrier surface and a second carrier surface opposite to the first carrier surface, and the first carrier surface of the carrier tape is provided with a plurality of protrusions; disposing the composite film on the carrier tape with the first metal surface facing the second carrier surface; disposing the edge strip on the carrier tape so as to correspond to the plurality of protrusions; and rolling up at least the carrier tape, the composite film disposed thereon, and the edge strip to form a rolled laminate.
Description
Technical Field
The present invention relates to a method for producing a laminate, and more particularly, to a method for producing a rolled laminate.
Background
The flexible copper foil substrate is one of the raw materials for manufacturing the flexible electronic device. The manufacturing method is to wind the copper foil and the polymer material coated on the copper foil to form a rolled laminated body through a roll-to-roll mode for subsequent process, and then cut the rolled laminated body into a proper size.
However, in the process of producing the roll-shaped laminate, the polymer material is cyclized by winding the corresponding film or sheet into a roll and baking the roll in an oven. The cyclization step usually takes a long time, and during baking, the adhesive surface (usually a high molecular polymer) often sticks. Further, after the corresponding film or sheet is rolled up, when the subsequent steps are performed, local wrinkles or uneven flatness of the film or sheet may be caused due to the influence of the internal stress. This has all the effects on the quality and appearance of the subsequent product.
Disclosure of Invention
The present invention is directed to a method of manufacturing a rolled laminate that can have a better process quality. And, the formed rolled laminate may have a better quality and/or product appearance.
According to an embodiment of the present invention, a method of manufacturing a rolled laminated body includes the steps of: providing a composite film, wherein the composite film comprises a metal foil and a polymer layer, the metal foil is provided with a first metal surface and a second metal surface opposite to the first metal surface, and the polymer layer is positioned on the second metal surface of the metal foil; providing a carrier tape, wherein the carrier tape is provided with a first carrier surface and a second carrier surface opposite to the first carrier surface, and the first carrier surface of the carrier tape is provided with a plurality of protrusions; disposing the composite film on the carrier tape with the first metal surface facing the second carrier surface; disposing the edge strip on the carrier tape so as to correspond to the plurality of protrusions; and rolling up at least the carrier tape, the composite film disposed on the carrier tape, and the edge strip disposed on the carrier tape to form a rolled laminate.
According to an embodiment of the present invention, the plurality of protrusions are separated from each other.
According to an embodiment of the present invention, the plurality of protrusions are distributed on opposite sides of the carrier tape in the width direction.
According to an embodiment of the present invention, the method of manufacturing a rolled laminate further includes the steps of: after the carrier tape, the composite film arranged on the carrier tape and the edge strips arranged on the carrier tape are rolled up, a baking step is carried out, and in the baking step, the baking airflow direction is basically parallel to the width direction of the carrier tape, so that the airflow can flow between the carrier tape and the composite film.
According to an embodiment of the present invention, in the baking step, a highest temperature of baking is 300 ℃ or higher, and a baking time is 1 hour or higher.
According to an embodiment of the present invention, the method of manufacturing a rolled laminate further includes the steps of: in the process of disposing the composite film on the carrier tape, tension is applied to the composite film and the carrier tape in a conveying direction parallel to the composite film or the carrier tape, and after disposing the composite film on the carrier tape, the first metal surface directly contacts the second carrier surface.
According to an embodiment of the present invention, the relationship between the tension applied to the carrier tape and the cross-sectional area of the carrier tape has a first ratio, the relationship between the tension applied to the composite film and the cross-sectional area of the metal foil has a second ratio, and the first ratio is smaller than the second ratio.
According to an embodiment of the present invention, the material of the carrier tape has a first linear thermal expansion coefficient, the material of the metal foil has a second linear thermal expansion coefficient, and a ratio of the first linear thermal expansion coefficient to the second linear thermal expansion coefficient is between 0.6 and 1.2; and the ratio of the first ratio to the second ratio is between 0.01 and 0.18.
According to one embodiment of the present invention, the first ratio is 0.006kg/mm 2 ～0.056kg/mm 2 。
According to an embodiment of the invention, the second ratio is between 0.309kg/mm 2 ～0.720kg/mm 2 。
Based on the above, the manufacturing method of the rolled laminated body can have better process quality, and the formed rolled laminated body can have better quality and/or product appearance.
Drawings
FIG. 1 is a partial perspective view of a method of partially manufacturing a rolled laminate according to an embodiment of the invention;
FIG. 2 is a partial perspective view of a method of partially manufacturing a rolled laminate according to an embodiment of the invention;
FIG. 3 is a partial side schematic view of a method of partial fabrication of a rolled laminate in accordance with an embodiment of the invention;
fig. 4 is a partial side view schematic diagram of a method of partially manufacturing a rolled laminate according to an embodiment of the invention.
Description of the reference numerals
110: a composite membrane;
112: a metal foil;
112a: a first metal face;
112b: a second metal face;
111: a polymer layer;
118: a polymer material;
120: a carrier tape;
120a: a first carrier surface;
120b: a second carrier surface;
123: a protrusion;
130: edge strips;
800: a roll-to-roll apparatus;
812. 820, 830, 840, 890: a roller;
880: a coating device;
980: an oven;
990: a flow guiding device;
991: a plate body;
992: air holes;
993: a deflector wall;
109: laminating the intermediate in a roll;
110h, 112h, 120h, 130h: thickness;
111w, 112w, 120w: a width;
d1: a width direction;
d2: the direction of the air flow;
f1, F2, F3: and (3) airflow.
Detailed Description
Reference will now be made in detail to the exemplary embodiments of the present invention, examples of which are illustrated in the accompanying drawings.
In the drawings, the size of parts of the components, units and/or assemblies may be exaggerated or reduced for clarity. In addition, some of the components, units, and/or assemblies shown or labeled in the drawings may be omitted for clarity. Also, the numerical values expressed in the specification may include the numerical values as well as deviation values within a deviation range acceptable to those skilled in the art.
Moreover, relative terms such as "upper" or "lower" may be used herein to describe one component's relationship to another component as illustrated in the figures. It will be understood that relative terms are intended to encompass different orientations of the device in addition to the orientation depicted in the figures. For example, if the device in one figure is turned over, elements described as being on the "lower" side of other elements would then be oriented on the "upper" side of the other elements. Thus, the exemplary term "lower" may include both "lower" and "upper" orientations, depending on the particular orientation of the figure. Similarly, if the device in one figure is turned over, elements described as "below" other elements would then be oriented "above" the other elements.
As used herein, "substantially," about "includes both the recited value and an average value within an acceptable deviation of the particular value as determined by one of ordinary skill in the art, which may be expressed in terms of" about the recited value; or, directly in the form of "the value". And, a specific number of measurements and measurement-related errors (i.e., limitations of the measurement system) in question are considered.
Unless defined otherwise, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the relevant art and the present invention and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.
In the method of manufacturing a roll laminate of the present embodiment, part of the steps may be performed via the roll-to-roll apparatus (roll to roll apparatus) 800.
Taking fig. 1 as an example, the metal foil 112 may be provided via a supply roller 812. The metal foil 112 may have a first metal face 112a and a second metal face 112b opposite to the first metal face 112 a. The metal foil 112 is, for example, copper foil, but the present invention is not limited thereto. The coefficient of linear thermal expansion (Coefficient of Linear Thermal Expansion, CLTE) of copper is about 16.5 to 16.7ppm/°c.
Continuing with fig. 1, a polymer layer 111 may be formed on the second metal surface 112b of the metal foil 112.
In one embodiment, the polymer material 118 may be coated (coated) on the second metal surface 112b of the metal foil 112 by the coating device 880. The polymer material 118 may include Polyimide (PI; e.g., thermoplastic Polyimide or thermosetting Polyimide), liquid crystal polymer (Liquid Crystal Polymer, LCP) or other suitable polymer, and the aforementioned polymer may be dissolved in a corresponding solvent.
In one embodiment, after the polymer material 118 is coated on the second metal surface 112b of the metal foil 112, a corresponding polymer layer 111 may be formed by a suitable method (e.g., heating or other suitable pre-curing step).
For example, a heating zone may be provided between the coating device 880 and the pressing roller 840 along the conveying direction of the composite film 110. In the heating zone, the polymer material 118 coated on the second metal surface 112b of the metal foil 112 may be subjected to a pre-curing step by a corresponding heating means (e.g., a bake oven or a heating lamp; not shown).
Also for example, the pressing roller 840 may be thermally coupled to an electric heating coupler, and may have a heating function.
In an embodiment, the polymer layer 111 may be a single film layer, but the invention is not limited thereto.
In an embodiment, the polymer layer 111 may be a stack of multiple film layers of the same or different types. For example, the polymer layer 111 formed by stacking a plurality of film layers can be formed through a plurality of coating and/or corresponding pre-curing steps.
In one embodiment, the width 111w of the polymer layer 111 in the width direction D1 may be similar to or the same as the width of the metal foil 112. For example, the width of the polymer layer 111 may be about 95% to 100% of the width of the metal foil 112.
Continuing with fig. 1, carrier tape 120 may be provided via supply roller 820. The carrier tape 120 may be a metal tape based on the following steps (e.g., heating step) and the consideration of the load bearing property.
In the present embodiment, the carrier tape 120 is, for example, a steel tape, but the present invention is not limited thereto. The steel strip may be made of common or commonly used steel (such as 201 steel, 204 steel, 304 steel, 316 steel or 430 steel, but not limited thereto). The linear thermal expansion coefficient of the common or commonly used steel is about 10.5 to 16.0 ppm/DEG C. The aforementioned generally common or commonly used steels are less expensive than unchanged steels (e.g., invar 36 alloy).
In the present embodiment, the carrier tape 120 has a first carrier surface 120a and a second carrier surface 120b opposite to the first carrier surface 120 a. The first carrier surface 120a of the carrier tape 120 has a plurality of protrusions 123. For example, the plurality of protrusions 123 may be formed on the first carrier surface 120a of the carrier tape 120 by embossing. In one embodiment, the plurality of protrusions 123 are separated from each other and/or the plurality of protrusions 123 are distributed on opposite sides of the carrier tape 120 in the width direction D1.
In addition, the present invention is not limited to the shape of the protrusion 123. For example, as shown in fig. 3 or 4, the protrusion 123 may have a shape similar to a cone. In a not shown embodiment, the protrusion 123 may have a shape similar to a column or a frustum.
In addition, not all the protrusions 123 are labeled one by one in the drawings for clarity of illustration.
Continuing with fig. 1, the composite film 110 is disposed on the carrier tape 120 such that the first metal surface 112a of the metal foil 112 faces the second carrier surface 120b of the carrier tape 120. For example, the first metal surface 112a of the metal foil 112 may be contacted and attached to the second carrier surface 120b of the carrier tape 120 by adjusting the relative position between the feeding roller 812 and the pressing roller 840 and the relative position between the feeding roller 820 and the pressing roller 840.
In an embodiment, the thickness 120h of the carrier tape 120 may be made greater than the thickness 110h of the composite film 110. In this way, the carrier tape 120 can have better bearing performance.
In one embodiment, the relative rotational speed between the feed roller 812 and the pressing roller 840 may be adjusted to impart a corresponding tension to the composite film 110 in its transport direction. For example, the rotational speed of the feed roller 812 may be made slower than the rotational speed of the pressing roller 840.
In a not shown embodiment, a tension adjustment wheel (not shown) may be provided between the feed roller 812 and the pressing roller 840 along the conveying direction of the composite film 110. The tension adjusting wheel may be adapted to transfer the composite film 110, and may cause the composite film 110 to be applied with a corresponding tension in its transfer direction by adjusting a relative rotational speed between the tension adjusting wheel and the pressing roller 840 and/or adjusting a relative position between the tension adjusting wheel and the pressing roller 840.
In one embodiment, the carrier tape 120 may be subjected to a corresponding tension in its conveying direction by adjusting the relative rotational speed between the supply roller 820 and the pressing roller 840. For example, the rotational speed of the supply roller 820 may be made slower than the rotational speed of the pressing roller 840.
In a not shown embodiment, a tension adjustment wheel (not shown) may be provided between the supply roller 820 and the pressing roller 840 along the conveying direction of the carrier tape 120. The tension adjustment wheel may be adapted to convey the carrier tape 120, and may cause the carrier tape 120 to be imparted with a corresponding tension in its conveyance direction by adjusting a relative rotational speed between the tension adjustment wheel and the pressing roller 840 and/or adjusting a relative position between the tension adjustment wheel and the pressing roller 840.
In the present embodiment, the width of the composite film 110 (e.g., defined by the width 112w of the metal foil 112) in the width direction D1 may be smaller than the width 120w of the carrier tape 120. For example, the width 112w of the metal foil 112 may be about 85% -95% of the width 120w of the carrier tape 120.
In the present embodiment, after the composite film 110 is disposed on the carrier tape 120, the composite film 110 is not overlapped with any one of the protrusions 123 in the width direction D1 and/or the thickness direction (e.g., the direction corresponding to the thickness 120 h) of the carrier tape 120.
In this embodiment, the carrier tape 120 is substantially free of any holes where it is suitable for disposing the composite film 110. Specifically, after the composite film 110 is disposed on the carrier tape 120, the carrier tape 120 located on both sides of the composite film 110 or at the place where the composite film 110 is disposed does not substantially have any holes in the width direction D1 of the carrier tape 120. For example, metal strips are often formed by a stamping process (stamping process) to form holes and/or to form a large number of holes over a large distribution area. However, if other layers (e.g., the same or similar to the composite film 110) are to be disposed on the perforated metal tape, defects (e.g., burrs, waviness, or tearing) formed during the stamping process may damage or destroy the layers disposed thereon.
In the present embodiment, the relationship between the tension applied to the carrier tape 120 and the cross-sectional area of the carrier tape 120 (about: thickness 120h×width 120 w) has a first ratio (i.e., the tension applied to the carrier tape 120/the cross-sectional area of the carrier tape 120), the relationship between the tension applied to the composite film 110 and the cross-sectional area of the metal foil 112 (about: thickness 112h×width 112 w) has a second ratio (i.e., the tension applied to the composite film 110/the cross-sectional area of the metal foil 112), and the first ratio is smaller than the second ratio. In one embodiment, the material of the carrier tape 120 has a first linear thermal expansion coefficient, the material of the metal foil 112 has a second linear thermal expansion coefficient, the ratio of the first linear thermal expansion coefficient to the second linear thermal expansion coefficient (i.e., the first linear thermal expansion coefficient/the second linear thermal expansion coefficient) is between 0.6 and 1.2, and the ratio of the first ratio to the second ratio (i.e., the first ratio/the second ratio) is between 0.01 and 0.18. In this way, the quality of the formed rolled laminate can be improved in the subsequent heating step.
In one embodiment, the first ratio may be between 0.006kg/mm 2 ～0.056kg/mm 2 The method comprises the steps of carrying out a first treatment on the surface of the And/or the second ratio may be between 0.309kg/mm 2 ～0.720kg/mm 2 。
Continuing with fig. 1, the edge strip 130 may be provided via a feed roller 830. The edge strip 130 may be disposed on the carrier tape 120, and the edge strip 130 overlaps the plurality of protrusions 123 in the thickness direction of the carrier tape 120. The material of the edging 130 may comprise a common or commonly used steel material. The thickness 130h of the edging 130 is greater than the thickness 110h of the composite membrane 110.
Continuing with fig. 1, the carrier tape 120, the composite film 110 disposed on the carrier tape 120, and the edge strip 130 disposed on the carrier tape 120 are rolled up to form a rolled laminated intermediate 109.
It should be noted that in the embodiment shown in fig. 1, the composite film 110 is first disposed on the carrier tape 120; then, the edge strip 130 is disposed on the carrier tape 120, but the present invention is not limited thereto. In an embodiment not shown, the edge strip 130 may be first disposed on the carrier tape 120; then, the composite film 110 is disposed on the carrier tape 120.
It should be noted that in the embodiment shown in fig. 1, the edge strips 130 are first contacted with the protrusions 123 on the carrier tape 120, but the invention is not limited thereto. As long as, as shown in fig. 3 or 4, in the rolled laminated intermediate body 109, the inner side of the edge strip 130 may contact the plurality of protrusions 123 of the carrier tape 120 of the inner layer, and the outer side of the edge strip 130 may contact the second carrier surface 120b of the carrier tape 120 of the outer layer.
Referring to fig. 2, the rolled laminated intermediate 109 may be placed in an oven 980 for the baking step. The corresponding cutting, fixing, handling or other finishing steps can be found in a generally conventional roll-to-roll process prior to placing the rolled laminated intermediate 109 in the oven, and are not described in detail herein. The solvent may be volatilized and/or the polymeric material may be polymerized or cured (curing) via the baking step described above.
In the foregoing baking step, the highest temperature of baking is 300 ℃ or higher, and the baking time is 1 hour or longer.
In the baking step, the direction D2 of the hot air flow for baking can be substantially parallel to the width direction D1 of the carrier tape 120 by the guiding device 990, and the hot air can flow between the composite film 110 and the carrier tape 120.
In the present embodiment, the protrusion 123 of the carrier tape 120 and the edge strip 130 corresponding to the protrusion 123 can reduce the possibility that the polymer material that is not completely polymerized or cured is adhered to the first carrier surface 120a of the carrier tape 120. Further, since the thickness 130h of the edge strip 130 is larger than the thickness 110h of the composite film 110, when the rolled laminated intermediate body 109 is rolled up, a gap is provided between the carrier tapes 120, and therefore, the hot air flow can be easily circulated between the rolled carrier tapes 120. In this way, the solvent can be volatilized easily, and/or the quality of the polymer material polymerization or curing (curing) can be improved.
For example, the oven 980 may have corresponding gas inflow and outflow holes, and the deflector 990 may be disposed within the oven 980. The deflector 990 may be a plate body 991 having air holes 992 and a deflector wall 993 corresponding to the air holes 992. The rolled laminated intermediate body 109 may be placed in correspondence with the air holes 992 with the width direction D1 substantially parallel to the extending direction of the guide wall 993 and/or the normal direction of the surface of the plate body 991. As such, among the air flows in the oven 980, a portion of the air flow F1 corresponding to the air holes 992 may pass through the air holes 992, and other portions of the air flow F3 corresponding to the air holes 992 may be blocked by the plate 991. And, the direction D2 of the air flow F2 passing through the air holes 992 may be made substantially parallel to the width direction D1 of the carrier tape 120 by the guiding of the guide wall 993. In this way, the directionality of the air flow flowing between the composite film 110 and the carrier tape 120 can be made to be consistent, and the efficiency or effect of solvent evaporation and/or polymerization or curing of the polymer material can be improved.
It is noted that in fig. 2, the directions of the respective air flows are only schematically shown. That is, the direction of the air flow may be understood by those having ordinary skill in the art depending on the corresponding device and placement state, and may be equally understood or implemented based on what is schematically shown in fig. 2 and corresponds thereto.
In this embodiment, the carrier tape 120 and the composite film 110 are first subjected to the corresponding tensile forces during the process of forming the rolled laminated intermediate 109. In this way, in the baking step, the influence of internal stress caused by material expansion can be reduced, and the process quality can be improved.
The rolled laminate intermediate 109 may already substantially form a corresponding rolled laminate after the foregoing baking step. The roll stack may be similar in appearance or shape to the roll stack intermediate 109 and is not repeated.
In one embodiment, the carrier tape 120 in the rolled laminate may be separated from the composite film 110 (which includes the metal foil 112 and the cured polymeric layer 111). After the composite film 110 is properly cut, a flexible copper foil substrate of a proper size can be formed.
Examples and comparative examples
The present invention will be specifically described with reference to examples and comparative examples, but the present invention is not limited at all by the examples.
Each example and comparative example may be a roll-shaped laminate formed in the above manner.
In each of the examples and comparative examples, the metal foil used was a copper foil having a width of about 540 cm (micrometer, mm) and a thickness of about 12 to 18 μm.
In each of the examples and comparative examples, the width of the polymer layer formed on the copper foil was about 535 cm, and the thickness of the polymer layer was about 12 to 50. Mu.m. The polymer layer may be made of polyimide.
In each of the examples and comparative examples, the carrier tape used was a steel tape having a width of about 600 cm (mm) and a thickness of the steel tape was as shown in Table 1. The protrusions formed on the steel strip have a height of about twice the thickness of the steel strip.
In each example and comparative example, the corresponding production parameters and the corresponding roll laminate results are shown in [ table 1 ].
In the method of evaluating each corresponding rolled laminate, the corresponding evaluation can be performed in the following manner.
The process comprises the following steps: the adhesive area ratio was roughly estimated by randomly sampling the roll stack to a range of about 200mm by 250 mm.
Test piece tensile test (tensile): the finished test pieces of about 200mm by 250mm were taken and tested and evaluated directly or indirectly with a general commercial universal tester for tensile Strength (tensile Strength), elongation (elongation) and Young's modulus (Young's modulus) according to ASTM D3039/D3039M standard (Standard Test Method for Tensile Properties of Polymer Matrix Composite Materials).
Appearance quality of the test piece: the cyclization ratio (hybridization rate) of a polymer layer (e.g., polyimide) can be quantitatively determined by a generally used method (e.g., infrared characteristic peak spectrum comparison). In general, if the cyclization ratio is more than 70%, the appearance of the polymer layer film layer is an acceptable degree of color difference in human eye observation.
As shown in Table 1, the roll-like layered body according to the present invention has a low sticking ratio during the production process and a good process quality.
As shown in Table 1, the roll-like laminate formed by the method of the present invention can have a better quality (e.g., a better tensile strength, elongation and/or Young's modulus).
As shown in Table 1, the rolled laminate formed by the method of the present invention can have a good product appearance (e.g., a low degree of color difference).
As shown in table 1, it is clear from examples 1 and comparative example 1 that when the steel strip was baked, gaps were formed between the rolled laminated bodies, and the cyclization ratio of the film was slightly improved.
As shown in table 1, from examples 2 to 6, when the tension of the steel strip and the material is increased and the thickness of the steel strip and the edge strip is increased, the interlayer gap in the rolled laminate is increased, the sticking ratio of the film material can be effectively reduced, and the cyclization ratio of the film material can be gradually increased.
As shown in table 1, it can be seen from examples 7 to 10 that when the material tension is within a specific range, the tension is sufficient to eliminate the sticking caused by thermal expansion of the material during baking, so that the cyclization ratio of the film material can be significantly improved and the sticking ratio can be significantly improved.
As shown in Table 1, in example 11, when the tension of the material is too high, the film material is wrinkled and sticky.
In summary, the method for manufacturing a rolled laminate according to the present invention can have a better process quality, and the formed rolled laminate can have a better quality and/or product appearance.
[ practicality ]
The method for producing a roll-shaped laminate of the present invention can be used to form a corresponding roll-shaped laminate. The rolled laminated body can be subjected to corresponding steps to form a flexible copper foil substrate with proper size. The flexible copper foil substrate is one of the raw materials for manufacturing the flexible electronic device.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and not for limiting the same; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the invention.
Claims (10)
1. A method for producing a rolled laminate, comprising:
providing a composite film, wherein the composite film comprises a metal foil and at least one polymer layer, the metal foil is provided with a first metal surface and a second metal surface opposite to the first metal surface, and the polymer layer is positioned on the second metal surface of the metal foil;
providing a carrier tape, wherein the carrier tape is provided with a first carrier surface and a second carrier surface opposite to the first carrier surface, and the first carrier surface of the carrier tape is provided with a plurality of protrusions;
disposing the composite film on the carrier tape with the first metal surface facing the second carrier surface;
disposing at least one edge strip on the carrier tape so as to correspond to the plurality of protrusions; and
at least the carrier tape, the composite film disposed on the carrier tape, and the edge strip disposed on the carrier tape are rolled up to constitute the rolled laminate.
2. The method of manufacturing a roll stack according to claim 1, wherein the plurality of protrusions are separated from each other.
3. The method of manufacturing a roll stack according to claim 1, wherein the plurality of projections are distributed on opposite sides in a width direction of the carrier tape.
4. The method of manufacturing a roll stack according to claim 1, further comprising:
after the carrier tape, the composite film arranged on the carrier tape and the edge strips arranged on the carrier tape are rolled up, a baking step is performed, and in the baking step, the baking airflow direction is parallel to the width direction of the carrier tape.
5. The method of producing a roll-type laminated body according to claim 4, wherein in the baking step, a highest temperature of baking is 300 ℃ or higher, and a baking time is 1 hour or higher.
6. The method of manufacturing a roll stack according to claim 4, further comprising:
in the process of disposing the composite film on the carrier tape, tension is applied to the composite film and the carrier tape in a conveying direction parallel to the composite film or the carrier tape, and after disposing the composite film on the carrier tape, the first metal surface directly contacts the second carrier surface.
7. The method of manufacturing a rolled laminate according to claim 6, wherein a relationship between a tension applied to the carrier tape and a cross-sectional area of the carrier tape has a first ratio, a relationship between a tension applied to the composite film and a cross-sectional area of the metal foil has a second ratio, and the first ratio is smaller than the second ratio.
8. The method of manufacturing a roll stack according to claim 7, wherein:
the material of the carrier tape has a first linear thermal expansion coefficient, the material of the metal foil has a second linear thermal expansion coefficient, and the ratio of the first linear thermal expansion coefficient to the second linear thermal expansion coefficient is 0.6-1.2; and is also provided with
The ratio of the first ratio to the second ratio is between 0.01 and 0.18.
9. The method of manufacturing a rolled laminate according to claim 8, wherein the first ratio is 0.006kg/mm 2 ～0.056kg/mm 2 。
10. The method of manufacturing a rolled laminate according to claim 8, wherein the second ratio is between 0.309kg/mm 2 ～0.720kg/mm 2 。
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| TW111105431A TWI800261B (en) | 2022-02-15 | 2022-02-15 | Method for manufacturing a rolled laminate |
| TW111105431 | 2022-02-15 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116637782A true CN116637782A (en) | 2023-08-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210230657.1A Pending CN116637782A (en) | 2022-02-15 | 2022-03-09 | Method for producing rolled laminate |
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| Country | Link |
|---|---|
| JP (1) | JP7270098B1 (en) |
| CN (1) | CN116637782A (en) |
| TW (1) | TWI800261B (en) |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002118345A (en) * | 2000-10-10 | 2002-04-19 | Taiflex Scientific Co Ltd | Production method for double layer flexible board |
| JP4353153B2 (en) * | 2004-11-18 | 2009-10-28 | セイコーエプソン株式会社 | Display device, manufacturing method thereof, and electronic device |
| JP2008106138A (en) * | 2006-10-25 | 2008-05-08 | Du Pont Toray Co Ltd | Polyimide film and method for producing the same |
| SG184257A1 (en) * | 2010-03-30 | 2012-11-29 | Toray Industries | Metal support flexible board, metal support carrier tape for tape automated bonding using same, metal support flexible circuit board for mounting led, and copper foil-laminated metal support flexible circuit board for forming circuit |
| JP2018132542A (en) * | 2017-02-13 | 2018-08-23 | 株式会社Ｎｓｃ | Display panel |
| KR102018455B1 (en) * | 2017-05-24 | 2019-09-04 | 주식회사 엘지화학 | A roll of polyimide film laminate and a method for producing same |
| JP7248394B2 (en) * | 2017-09-29 | 2023-03-29 | 日鉄ケミカル＆マテリアル株式会社 | Polyimide film and metal-clad laminate |
-
2022
- 2022-02-15 TW TW111105431A patent/TWI800261B/en active
- 2022-03-09 CN CN202210230657.1A patent/CN116637782A/en active Pending
- 2022-06-02 JP JP2022090191A patent/JP7270098B1/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| JP2023118645A (en) | 2023-08-25 |
| TW202335544A (en) | 2023-09-01 |
| JP7270098B1 (en) | 2023-05-09 |
| TWI800261B (en) | 2023-04-21 |
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