CN114181636A - Adhesive tape and laminating method thereof - Google Patents
Adhesive tape and laminating method thereof Download PDFInfo
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- CN114181636A CN114181636A CN202111580918.4A CN202111580918A CN114181636A CN 114181636 A CN114181636 A CN 114181636A CN 202111580918 A CN202111580918 A CN 202111580918A CN 114181636 A CN114181636 A CN 114181636A
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- adhesive tape
- adhesive
- edge
- wire
- layer
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- 239000002390 adhesive tape Substances 0.000 title claims abstract description 102
- 238000000034 method Methods 0.000 title claims description 15
- 238000010030 laminating Methods 0.000 title claims description 5
- 239000012790 adhesive layer Substances 0.000 claims abstract description 62
- 239000010410 layer Substances 0.000 claims abstract description 37
- 239000000758 substrate Substances 0.000 claims abstract description 22
- 239000000463 material Substances 0.000 claims description 7
- 239000002216 antistatic agent Substances 0.000 claims description 5
- 239000003795 chemical substances by application Substances 0.000 claims description 5
- 229920000058 polyacrylate Polymers 0.000 claims description 5
- 229920005989 resin Polymers 0.000 claims description 5
- 239000011347 resin Substances 0.000 claims description 5
- 239000002904 solvent Substances 0.000 claims description 5
- 238000010023 transfer printing Methods 0.000 claims description 3
- 238000012545 processing Methods 0.000 abstract description 3
- 229920000139 polyethylene terephthalate Polymers 0.000 description 6
- 238000012360 testing method Methods 0.000 description 5
- 230000001070 adhesive effect Effects 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- KXGFMDJXCMQABM-UHFFFAOYSA-N 2-methoxy-6-methylphenol Chemical compound [CH]OC1=CC=CC([CH])=C1O KXGFMDJXCMQABM-UHFFFAOYSA-N 0.000 description 3
- 229920002799 BoPET Polymers 0.000 description 3
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 description 3
- 239000000853 adhesive Substances 0.000 description 3
- 238000009826 distribution Methods 0.000 description 3
- 230000017525 heat dissipation Effects 0.000 description 3
- 239000005011 phenolic resin Substances 0.000 description 3
- 229920001568 phenolic resin Polymers 0.000 description 3
- 238000007639 printing Methods 0.000 description 3
- 150000003505 terpenes Chemical class 0.000 description 3
- 235000007586 terpenes Nutrition 0.000 description 3
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- DVKJHBMWWAPEIU-UHFFFAOYSA-N toluene 2,4-diisocyanate Chemical compound CC1=CC=C(N=C=O)C=C1N=C=O DVKJHBMWWAPEIU-UHFFFAOYSA-N 0.000 description 2
- 241001149900 Fusconaia subrotunda Species 0.000 description 1
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical class [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000012298 atmosphere Substances 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 230000009477 glass transition Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 238000002834 transmittance Methods 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
Images
Classifications
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J7/00—Adhesives in the form of films or foils
- C09J7/20—Adhesives in the form of films or foils characterised by their carriers
- C09J7/22—Plastics; Metallised plastics
- C09J7/25—Plastics; Metallised plastics based on macromolecular compounds obtained otherwise than by reactions involving only carbon-to-carbon unsaturated bonds
- C09J7/255—Polyesters
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
- C09J11/02—Non-macromolecular additives
- C09J11/06—Non-macromolecular additives organic
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
- C09J11/08—Macromolecular additives
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J133/00—Adhesives based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Adhesives based on derivatives of such polymers
- C09J133/04—Homopolymers or copolymers of esters
- C09J133/06—Homopolymers or copolymers of esters of esters containing only carbon, hydrogen and oxygen, the oxygen atom being present only as part of the carboxyl radical
- C09J133/08—Homopolymers or copolymers of acrylic acid esters
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J5/00—Adhesive processes in general; Adhesive processes not provided for elsewhere, e.g. relating to primers
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J7/00—Adhesives in the form of films or foils
- C09J7/30—Adhesives in the form of films or foils characterised by the adhesive composition
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J2301/00—Additional features of adhesives in the form of films or foils
- C09J2301/10—Additional features of adhesives in the form of films or foils characterized by the structural features of the adhesive tape or sheet
- C09J2301/12—Additional features of adhesives in the form of films or foils characterized by the structural features of the adhesive tape or sheet by the arrangement of layers
- C09J2301/122—Additional features of adhesives in the form of films or foils characterized by the structural features of the adhesive tape or sheet by the arrangement of layers the adhesive layer being present only on one side of the carrier, e.g. single-sided adhesive tape
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J2301/00—Additional features of adhesives in the form of films or foils
- C09J2301/10—Additional features of adhesives in the form of films or foils characterized by the structural features of the adhesive tape or sheet
- C09J2301/12—Additional features of adhesives in the form of films or foils characterized by the structural features of the adhesive tape or sheet by the arrangement of layers
- C09J2301/124—Additional features of adhesives in the form of films or foils characterized by the structural features of the adhesive tape or sheet by the arrangement of layers the adhesive layer being present on both sides of the carrier, e.g. double-sided adhesive tape
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J2433/00—Presence of (meth)acrylic polymer
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J2467/00—Presence of polyester
- C09J2467/006—Presence of polyester in the substrate
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Adhesive Tapes (AREA)
Abstract
The invention discloses an adhesive tape, which comprises a substrate layer and an adhesive layer arranged on the surface of the substrate layer, wherein a plurality of wire grooves are formed in the surface of the adhesive layer, which is far away from the substrate layer, at least one end of each wire groove extends to the edge of the adhesive tape, and an included angle used for identifying the edge of the adhesive tape is formed between each wire groove and the edge of the adhesive tape and is 5-85 degrees; wherein the depth of the wire groove is 0.001 mm-0.01 mm, and the width of the wire groove is 0.03 mm-0.08 mm; the adhesive tape edge is identified according to an included angle formed by a wire groove on the adhesive layer and the adhesive tape edge; the recognized adhesive tape is moved, and the edge of the adhesive tape is opposed to the edge of the adherend, so that the two are superposed after being adhered. The adhesive tape can improve the accuracy of the automatic equipment for identifying the edge of the adhesive tape, thereby improving the processing efficiency of products.
Description
Technical Field
The invention relates to the field of adhesive tapes, in particular to an adhesive tape and a laminating method thereof.
Background
The adhesive tape is widely applied to the OLED screen buffering and heat dissipation composite material. The heat dissipation structure can be bonded with the PET plate by the adhesive tape, and heat dissipation of the OLED screen in the using process is facilitated. However, when an OLED module is manufactured, the edge of the adhesive tape is required to be completely overlapped with the PET plate with the same size. In the existing automatic production, the edges of target adhesive tapes are not easy to distinguish in rows of adhesive tapes, so that the phenomena of mistaken grabbing, missed grabbing, inaccurate tape edge alignment and the like of automatic equipment are caused, and the production efficiency of products is seriously influenced.
Moreover, for some high-end models, when the OLED panel fails and needs to be repaired, the assembly plant expects the panel body material to have reworkable properties to reduce the scrap of the whole OLED panel. The rework conditions are usually carried out at high temperatures, and thus, the high temperature tack requirements for the tape are high. The viscosity of the prior adhesive tape at high temperature can not meet the requirement.
Disclosure of Invention
In order to overcome the defects in the prior art, the embodiment of the invention provides the adhesive tape and the bonding method thereof, and the adhesive tape can improve the accuracy of the automatic equipment in identifying the edge of the adhesive tape, so that the processing efficiency of a product is improved.
In order to achieve the purpose, the invention adopts the technical scheme that: the adhesive tape comprises a base material layer and an adhesive layer arranged on the surface of the base material layer, wherein a plurality of wire grooves are formed in the surface, deviating from the base material layer, of the adhesive layer, at least one end of each wire groove extends to the edge of the adhesive tape, and the wire grooves and the edges of the adhesive tape form included angles used for identifying the edges of the adhesive tape, and the included angles are 5-85 degrees.
In the technical scheme, the depth of the wire groove is 0.001 mm-0.01 mm.
In the technical scheme, the width of the wire groove is 0.03-0.08 mm.
Preferably, two ends of the wire groove respectively extend to two adjacent adhesive tape edges.
Preferably, the wire grooves include first wire grooves arranged in parallel.
Further preferably, the wire grooves further comprise second wire grooves arranged in parallel, the second wire grooves are arranged in a manner of intersecting with the first wire grooves, and a grid is formed on the surface of the adhesive layer.
In the technical scheme, the distance between the adjacent first wire grooves and the adjacent second wire grooves is 0.1-0.3 mm.
Preferably, the adhesive tape further comprises a release film arranged on one side, away from the substrate layer, of the adhesive layer, wherein the surface, opposite to the adhesive layer, of the release film is provided with a mesh line protruding towards the adhesive layer, and the mesh line is formed by transfer printing on the surface of the adhesive layer after the release film is attached to the adhesive layer.
In the technical scheme, the adhesive layer comprises, by weight, 60-80 parts of an acrylate polymer, 20-40 parts of tackifying resin, 1.5-2.5 parts of a curing agent, 0.5-0.8 part of an antistatic agent and 150-400 parts of a solvent.
A method for attaching an adhesive tape is provided, wherein the adhesive tape is the adhesive tape; the attaching method comprises the following steps:
identifying the edge of the adhesive tape according to an included angle formed by the line slot on the adhesive layer and the edge of the adhesive tape;
the recognized adhesive tape is moved, and the edge of the adhesive tape is opposed to the edge of the adherend, so that the two are superposed after being adhered.
Due to the application of the technical scheme, compared with the prior art, the invention has the following advantages:
1. according to the invention, the plurality of wire grooves are formed in the surface of the adhesive layer, which is far away from the substrate layer, so that the end parts of the wire grooves extend to the edge of the adhesive tape, and the wire grooves and the edge of the adhesive tape form an included angle of 5-85 degrees.
2. The depth of the wire groove is set to be 0.001 mm-0.01 mm, the width of the wire groove is set to be 0.03 mm-0.08 mm, the wire groove can be clearly identified by the automation equipment, and after the adhesive layer is attached to the adhered sheet, the wire groove can disappear rapidly, and the adhering effect of the adhered sheet is ensured.
3. The plurality of wire grooves are arranged on the surface of the adhesive layer in a staggered mode to form a grid, air between binding surfaces can be discharged in the binding process of the adhesive layer and the bound sheet body by means of the staggered wire grooves, and the binding effect is improved.
4. The thickness of the formed adhesive layer is adjusted by adjusting the components and the content of the adhesive layer, so that the high-temperature viscosity of the adhesive layer is improved.
In order to make the aforementioned and other objects, features and advantages of the invention comprehensible, preferred embodiments accompanied with figures are described in detail below.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic view of a tape structure according to a first embodiment of the present invention;
FIG. 2 is a schematic view of an adhesive layer having a wire chase according to an embodiment of the present invention;
fig. 3 is a partially enlarged view of a portion a in fig. 2.
Reference numerals of the above figures: 1. a substrate layer; 2. an adhesive layer; 3. a release film; 4. a wire slot; 41. a first wire slot; 42. a second wire slot; 5. the edges of the tape; α: and (4) an included angle.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The first embodiment is as follows: referring to fig. 1-3, an adhesive tape comprises a substrate layer 1 and an adhesive layer 2 arranged on the surface of the substrate layer 1, wherein the adhesive layer 2 deviates from the substrate layer 1, a plurality of wire slots 4 are arranged on the surface of the substrate layer 1, at least one end of each wire slot 4 extends to an adhesive tape edge 5, each wire slot 4 and the adhesive tape edge 5 form an included angle alpha identified by the adhesive tape edge 5, and the included angle alpha is 5-85 degrees.
Through adhesive layer 2 deviates from substrate layer 1 establishes a plurality ofly on the surface wire casing 4 makes at least one end of wire casing 4 extends to adhesive tape edge 5, wire casing 4 with adhesive tape edge 5 forms 5 ~ 85 contained angle alpha, before automation equipment removes the sticky tape, can be by visual equipment according to the crossing department of wire casing 4 and adhesive tape edge 5, wire casing 4 sets up the relative adhesive tape edge 5 slope, discerns adhesive tape edge 5's accurate position, improves the exactness of discernment. And the automatic equipment sucks and moves the target adhesive tape according to the obtained accurate position of the edge 5 of the target adhesive tape, so that the edge of the target adhesive tape is opposite to the edge of the adhered sheet body at the specified position, and the target adhesive tape and the adhered sheet body are overlapped and bonded.
Preferably, the included angle α between the thread groove 4 and the tape edge 5 is set to 35 ° to 55 °. If the included angle alpha between the thread groove 4 and the adhesive tape edge 5 is set to 45 degrees, the distinction is convenient.
In order to further ensure that the automation equipment can clearly obtain the included angle alpha formed by the wire slot 4 and the adhesive tape edge 5, the depth of the wire slot 4 is set to be 0.001-0.01 mm. Guarantee at the in-process of vision equipment discernment sticky tape edge 5, wire casing 4 can be clear exist on the surface of adhesive layer 2, promptly, make the acquisition that vision equipment can be clear wire casing 4 and sticky tape edge 5's contained angle alpha position to the position of discernment sticky tape edge 5. In the process of adhering the adhesive tape to the adhered sheet body by the automatic equipment, the wire slot 4 can disappear rapidly, and the adhesive tape is completely adhered to the adhered sheet body. Preferably, the width of the wire groove 4 may be set to 0.03mm to 0.08 mm. Specifically, the width of the wire groove 4 may be set to 0.05 mm.
The line groove 4 may be in a dotted line shape on the surface of the adhesive layer 2, and an end of a short line of the dotted line, which is close to the tape edge 5, extends to the tape edge 5. The thread groove 4 may also be a long solid line shape, and two ends of the thread groove respectively extend to two adjacent adhesive tape edges 5. Preferably, the wire chase 4 includes first wire chases 41 arranged in parallel. Such that the thread grooves 4 form an angle α of 45 ° with the tape edge 5. A plurality of the wire grooves 4 may be arranged at equal intervals. Further preferably, the linear grooves 4 further include second linear grooves 42 arranged in parallel, and the second linear grooves 42 intersect with the first linear grooves 41 to form a grid on the surface of the adhesive layer 2. And forming grids on the surface of the adhesive layer 2 by using the staggered wire grooves 4, so that residual gas between the adhesive layer 2 and the adhered sheet body can be discharged from the grid grooves in the process of adhering the adhesive layer 2 and the adhered sheet body, and the adhesion of the adhesive layer and the adhered sheet body without bubbles is realized. Specifically, the first line groove 41, the second line groove 42 and the tape edge 5 form an included angle α of 45 °. The first wire groove 41 and the second wire groove 42 are vertically intersected, and a rectangular bump is enclosed by the first wire groove 41 and the second wire groove 42. The distance between the adjacent first wire grooves 41 and the adjacent second wire grooves 42 is 0.1 mm-0.3 mm. The first wire grooves 41 are arranged in parallel at equal intervals, the second wire grooves 42 are arranged in parallel at equal intervals, and when the intervals between the first wire grooves 41 and the second wire grooves 42 are equal, the first wire grooves 41 and the second wire grooves 42 are surrounded to form square bumps.
The wire groove 4 can be directly processed and formed on the surface of the adhesive layer 2. Preferably, the adhesive tape further comprises a release film 3 arranged on one side of the adhesive layer 2 departing from the substrate layer 1. And the surface of the release film 3 opposite to the adhesive layer 2 is provided with a reticulate pattern line which is raised towards the adhesive layer 2, and the reticulate pattern line is matched with a line groove 4 to be formed on the adhesive layer 2. The wire casing 4 by from the laminating of type membrane 3 in back on the adhesive layer 2, the net grain line is in the transfer printing of adhesive layer 2 surface forms, and its processing is convenient, easy operation.
The adhesive tape can be made into a single-sided adhesive tape or a double-sided adhesive tape according to the non-passing use environment. When the adhesive tape is made into a double-sided adhesive tape, the adhesive tape comprises a substrate layer 1 and adhesive layers 2 which are relatively attached to two sides of the substrate layer 1, and a plurality of wire slots 4 are formed in the surface, deviating from the substrate layer 1, of at least one of the adhesive layers 2.
When the adhesive tape is used for manufacturing an OLED module, the high-temperature viscosity requirement of the product is high, and the inventor improves the formula of the adhesive layer 2 to meet the high-temperature viscosity requirement.
Specifically, the adhesive layer 2 comprises, by weight, 60-80 parts of an acrylate polymer, 20-40 parts of tackifying resin, 1.5-2.5 parts of a curing agent, 0.5-0.8 part of an antistatic agent, and 150-400 parts of a solvent. Wherein the weight average molecular weight Mw of the acrylate polymer is 56.9 ten thousand g/mol, and the molecular weight distribution breadth (i.e., polydispersity) is 2.30. The tackifying resin can be terpene phenolic resin, the softening point of the terpene phenolic resin is 130 ℃, the glass transition temperature Tg of the terpene phenolic resin is 82 ℃, the weight average molecular weight is 1080g/mol, and the molecular weight distribution width is 1.15. The curing agent can be TDI (toluene diisocyanate). The antistatic agent can be selected from lithium ion salts. The solvent can be ethyl acetate. The weight average molecular weight and the width of the molecular weight distribution can be obtained by GPC measurement. The storage modulus G 'at 85 ℃ of the formula is 22KPa and the loss modulus G' is 12KPa through a rotational rheometer test. The equipment model used for the rotational rheometer test was Anton Paar MCR302, parallel plate diameter: 8mm, temperature range: -40 ℃ to 150 ℃, rate of temperature rise: 5 ℃/min, strain: 1%, frequency: 1 Hz.
The following description of the adhesive tape applied to the OLED module is taken as an example to illustrate the manufacturing process of the adhesive tape:
selecting a PET film as a base material, and printing black ink on one side of the PET film to form a base material layer 1; the thickness of the substrate layer 1 is 4-14 mu m; the light transmittance is required to be less than 1%, and the impedance between the ink surface and the PET surface is required to be 104Ω～109Omega. The thickness of the substrate layer 1 is 7 μm, the PET film is 5 μm, and the black ink is 2 μm.
70 parts of acrylate polymer, 30 parts of tackifying resin, 2 parts of curing agent, 0.63 part of antistatic agent and 200 parts of solvent are mixed by weight to prepare the adhesive.
A first engineering surface: coating an adhesive on the anti-sticking layer, and drying the anti-sticking layer by an oven to enable the formed first adhesive layer to be attached to the printing ink printing surface of the substrate layer 1; the anti-sticking layer can be an unstructured release film, the thickness of the first adhesive layer is 3-36 micrometers, and the anti-sticking layer can be used as a first anti-sticking layer of a finished adhesive tape.
A second engineering surface: coating an adhesive on the anti-sticking layer, and drying the anti-sticking layer by an oven to ensure that the formed second adhesive layer is attached to the PET surface of the substrate layer 1; the anti-sticking layer can be an unstructured release film, and the thickness of the second adhesive layer is 13-50 micrometers.
The third project surface: and stripping the anti-sticking layer of the second engineering surface under the normal temperature condition to ensure that the exposed second adhesive layer is attached to the grid surface of the grid release film, and the grid release film can be used as the second anti-sticking layer of the finished adhesive tape.
And (3) putting the bonded product into a 40 ℃ oven to be cured for 3 days to prepare the adhesive tape.
The adhesive tapes in the following tables (examples 1 to 4) were prepared using the above preparation method, and the conventional ordinary adhesive tape was used as a comparative example. The prepared adhesive tape was cut into a width of 25mm × 150mm in an atmosphere of 23 ℃ and 50% RH, and was attached to an SUS304 steel plate. A2 kg roller was reciprocated 3 times at a speed of 600 mm/min to obtain a test sample. The test sample is put into a box body of a high-low temperature tensile machine, and after standing for 30min at the temperature of 85 ℃, the stripping force is tested at the speed of 300mm/min, and the stripping force can be understood as the reworked viscosity under the high-temperature condition.
As can be seen from the above test of the high temperature adhesive tape, the adhesive tape prepared by the present application can have a high temperature adhesive property of 600gf/25mm or more.
The adhesive tape is the adhesive tape; the attaching method comprises the following steps:
identifying the edge 5 of the adhesive tape according to an included angle alpha formed by the wire groove 4 on the adhesive layer 2 and the edge 5 of the adhesive tape;
the recognized tape is moved and the tape edge 5 is opposed to the edge of the adherend, and the two are bonded and superposed.
Specifically, when the tape is used for adhering the OLED module, the first adhesive layer without the wire groove 4 is attached to the composite sheet body (formed by combining foam and a metal sheet). And stripping the grid release film on the second adhesive layer to expose the wire groove 4 on the second adhesive layer. The automatic equipment identifies the adhesive tape edge 5 through the included angle alpha between the thread groove 4 and the adhesive tape edge 5, and moves the adhesive tape edge 5 to be aligned with the edge of the PET plate, so that the adhesive tape edge 5 and the PET plate are completely overlapped and adhered to form a whole.
The principle and the implementation mode of the invention are explained by applying specific embodiments in the invention, and the description of the embodiments is only used for helping to understand the method and the core idea of the invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present invention.
Claims (8)
1. An adhesive tape characterized in that: the adhesive tape comprises a substrate layer and an adhesive layer arranged on the surface of the substrate layer, wherein a plurality of wire grooves are formed in the surface, deviating from the substrate layer, of the adhesive layer, at least one end of each wire groove extends to the edge of an adhesive tape, and an included angle used for identifying the edge of the adhesive tape is formed between each wire groove and the edge of the adhesive tape and ranges from 5 degrees to 85 degrees; the depth of the wire groove is 0.001 mm-0.01 mm, and the width of the wire groove is 0.03 mm-0.08 mm.
2. The adhesive tape according to claim 1, wherein: two ends of the wire groove respectively extend to the edges of the two adjacent adhesive tapes.
3. The adhesive tape according to claim 1, wherein: the wire casing includes parallel arrangement's first wire casing.
4. The adhesive tape according to claim 3, wherein: the wire grooves further comprise second wire grooves which are arranged in parallel, the second wire grooves are arranged in a crossed mode with the first wire grooves, and grids are formed on the surface of the adhesive layer.
5. The adhesive tape according to claim 4, wherein: the distance between the adjacent first wire grooves and the adjacent second wire grooves is 0.1 mm-0.3 mm.
6. The adhesive tape according to claim 1, wherein: the adhesive tape is characterized by further comprising a release film arranged on one side, deviating from the base material layer, of the adhesive layer, wherein the surface, opposite to the adhesive layer, of the release film is provided with a direction towards the convex net grain line of the adhesive layer, the wire groove is formed by laminating the release film on the adhesive layer and then forming the net grain line on the surface of the adhesive layer in a transfer printing mode.
7. The adhesive tape according to claim 1, wherein: the adhesive layer comprises, by weight, 60-80 parts of an acrylate polymer, 20-40 parts of tackifying resin, 1.5-2.5 parts of a curing agent, 0.5-0.8 part of an antistatic agent and 150-400 parts of a solvent.
8. A method for attaching an adhesive tape, comprising: the adhesive tape is the adhesive tape according to any one of claims 1 to 7; the attaching method comprises the following steps:
identifying the edge of the adhesive tape according to an included angle formed by the line slot on the adhesive layer and the edge of the adhesive tape;
the recognized adhesive tape is moved, and the edge of the adhesive tape is opposed to the edge of the adherend, so that the two are superposed after being adhered.
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| CN202111580918.4A CN114181636A (en) | 2021-12-22 | 2021-12-22 | Adhesive tape and laminating method thereof |
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