CN112497763A - Thick glue multilayer laminating process - Google Patents

Thick glue multilayer laminating process Download PDF

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Publication number
CN112497763A
CN112497763A CN202011031241.4A CN202011031241A CN112497763A CN 112497763 A CN112497763 A CN 112497763A CN 202011031241 A CN202011031241 A CN 202011031241A CN 112497763 A CN112497763 A CN 112497763A
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China
Prior art keywords
layer
release film
layer film
film
laminating
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Pending
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CN202011031241.4A
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Chinese (zh)
Inventor
王小莉
梁明月
张欢
朱传杰
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Nanjing Huixin Photoelectric Material Co ltd
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Nanjing Huixin Photoelectric Material Co ltd
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Publication of CN112497763A publication Critical patent/CN112497763A/en
Pending legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/48—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/78—Means for handling the parts to be joined, e.g. for making containers or hollow articles, e.g. means for handling sheets, plates, web-like materials, tubular articles, hollow articles or elements to be joined therewith; Means for discharging the joined articles from the joining apparatus
    • B29C65/7858—Means for handling the parts to be joined, e.g. for making containers or hollow articles, e.g. means for handling sheets, plates, web-like materials, tubular articles, hollow articles or elements to be joined therewith; Means for discharging the joined articles from the joining apparatus characterised by the feeding movement of the parts to be joined
    • B29C65/7861—In-line machines, i.e. feeding, joining and discharging are in one production line
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/02—Preparation of the material, in the area to be joined, prior to joining or welding
    • B29C66/022—Mechanical pre-treatments, e.g. reshaping
    • B29C66/0224—Mechanical pre-treatments, e.g. reshaping with removal of material
    • 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
    • C09J133/062—Copolymers with monomers not covered by C09J133/06
    • C09J133/066—Copolymers with monomers not covered by C09J133/06 containing -OH groups
    • 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
    • C09J7/10—Adhesives in the form of films or foils without carriers
    • 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
    • C09J7/38—Pressure-sensitive adhesives [PSA]
    • C09J7/381—Pressure-sensitive adhesives [PSA] based on macromolecular compounds obtained by reactions involving only carbon-to-carbon unsaturated bonds
    • C09J7/385—Acrylic polymers
    • 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
    • C09J7/40—Adhesives in the form of films or foils characterised by release liners
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2033/00—Use of polymers of unsaturated acids or derivatives thereof as moulding material
    • B29K2033/04—Polymers of esters
    • B29K2033/08—Polymers of acrylic acid esters, e.g. PMA, i.e. polymethylacrylate
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2007/00—Flat articles, e.g. films or sheets
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2009/00—Layered products

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Organic Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Manufacturing & Machinery (AREA)
  • Laminated Bodies (AREA)

Abstract

The invention provides a thick glue multilayer laminating process which comprises the following steps: firstly, preparing a single-layer film: the optical acrylic adhesive is made into a non-base material, and then a layer of release film is respectively attached to the upper bottom layer and the lower bottom layer to form a single-layer pressure-sensitive adhesive; secondly, membrane separation: separating the single-side release films of the two single-layer films in the step one; thirdly, laminating: and pressing the single-layer film with the single-side release film removed in the step two through an extruding device. According to the invention, the pressure-sensitive adhesive is coated on the release film and then the release film is jointed, so that the pressure-sensitive adhesive is fully dried, and the process of multiple coating and compound production has the advantages of better filling effect, no adhesive overflow during die cutting and the like.

Description

Thick glue multilayer laminating process
Technical Field
The invention relates to the field of pressure-sensitive adhesive manufacturing, in particular to a thick adhesive multilayer laminating process.
Background
The existing coating method is a composite technology, and by the coating method, pressure-sensitive adhesive can be coated on various substrates to prepare various composite materials. The current domestic pressure-sensitive adhesive is a thick adhesive produced by a one-time coating mode, and cannot meet the filling requirement and the using effect of the touch screen material in the market.
Disclosure of Invention
Aiming at the problems mentioned in the background technology, the invention provides a thick glue multilayer laminating process which is implemented according to the following steps: firstly, preparing a single-layer film: the optical acrylic adhesive is made into a non-base material, and then a layer of release film is respectively attached to the upper bottom layer and the lower bottom layer to form a single-layer pressure-sensitive adhesive; secondly, membrane separation: separating the single-side release films of the two single-layer films in the step one; thirdly, laminating: and pressing the single-layer film with the single-side release film removed in the step two through an extruding device.
Further, the acrylic adhesive is synthesized according to the following steps: firstly, adding ethyl acrylate, butyl acrylate, isooctyl acrylate, hydroxyethyl acrylate and methyl acrylate into a reaction kettle, and uniformly mixing to form a raw material; secondly, uniformly mixing the raw materials, the solvent and the initiator, and pouring the mixture into a four-neck flask provided with a thermometer, a mechanical stirrer and a condenser pipe; thirdly, heating the flask to raise the temperature of reactants in the flask to 80 ℃, carrying out heat preservation stirring reaction, timing when the viscosity of the system begins to increase, and continuing the heat preservation reaction for 1-1.5 hours; adding 1-20 parts of solvent into the reaction system, and adjusting the rotating speed to accelerate the stirring speed for stirring for 20 min; and fifthly, cooling and discharging, and adding a curing agent and other auxiliary agents to obtain the colloid A.
Further, the solvent includes at least one of: toluene, ethyl acetate; the initiator includes at least one of: oxidant ammonium persulfate, potassium persulfate, reducer sodium bisulfite and azodiisobutyronitrile; the mass of the solvent is 45-65% of that of the raw material, and the mass of the initiator is 40-60% of that of the raw material.
Further, the auxiliary agent comprises: defoaming agent, coupling agent, the auxiliary agent can improve the colloid laminating effect.
Further, the single-layer film is manufactured according to the following steps: firstly, coating colloid A with the thickness of 50-100 mu on a first release film, and putting the first release film into an oven for 5-10 min; and secondly, attaching a second release film on the surface of the dry glue.
The invention also provides a processing device for thick glue multilayer lamination, which comprises: the first single-layer film-laminated release film laminating machine comprises a first peeling device, a second peeling device and a laminating device, wherein the first peeling device separates a first single-layer film-laminated release film, the second peeling device separates a second single-layer film-laminated release film, and the laminating device tightly and closely leans against the removed parts of the first single-layer film and the second single-layer film-laminated release film and bonds the first single-layer film and the second single-layer film-laminated release film together by using pressure.
Further, the first peeling apparatus includes: the first cloth rolling wheel, the first cloth rolling wheel of receiving of releasing, first single layer membrane is placed on first cloth rolling wheel of releasing, the one deck of first single layer membrane is from the type membrane and carries out the rolling through first cloth rolling wheel of receiving.
Further, the second peeling apparatus includes: the second is put cloth rolling wheel, second and is received the cloth rolling wheel, the second single-layer membrane is placed the second is put on the cloth rolling wheel, the one deck of second single-layer membrane is from the type membrane and is received the cloth rolling wheel through the second and carry out the rolling.
Further, the laminating equipment comprises a first extrusion roller shaft, a second extrusion roller shaft and a laminating cloth winding wheel, wherein the first extrusion roller shaft and the second extrusion roller shaft are horizontally arranged, a gap is reserved between the first extrusion roller shaft and the second extrusion roller shaft, the first single-layer film and the second single-layer film pass through the gap after being separated and are extruded and bonded with the second extrusion roller shaft through the first extrusion roller shaft, and the first single-layer film and the second single-layer film are wound through the laminating cloth winding wheel after being bonded.
Compared with the prior art, the invention provides a thick glue multilayer laminating process which has the following beneficial effects:
according to the invention, the pressure-sensitive adhesive is coated on the release film and then the release film is jointed, so that the pressure-sensitive adhesive is fully dried, and the process of multiple coating and compound production has the advantages of better filling effect, no adhesive overflow during die cutting and the like.
Drawings
Fig. 1 is a schematic structural diagram of a thick glue multilayer lamination process processed product.
Fig. 2 is a schematic structural view of a processing apparatus for thick adhesive multilayer lamination.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, specific embodiments accompanied with figures are described in detail below, and it is apparent that the described embodiments are a part of the embodiments of the present invention, not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without making creative efforts based on the embodiments of the present invention, shall fall within the protection scope of the present invention.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, but the present invention may be practiced in other ways than those specifically described and will be readily apparent to those of ordinary skill in the art without departing from the spirit of the present invention, and therefore the present invention is not limited to the specific embodiments disclosed below.
Furthermore, reference herein to "one embodiment" or "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one implementation of the invention. The appearances of the phrase "in one embodiment" in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments.
The present invention will be described in detail with reference to the drawings, wherein the cross-sectional views illustrating the structure of the device are not enlarged partially in general scale for convenience of illustration, and the drawings are only exemplary and should not be construed as limiting the scope of the present invention. In addition, the three-dimensional dimensions of length, width and depth should be included in the actual fabrication.
Meanwhile, in the description of the present invention, it should be noted that the terms "upper, lower, inner and outer" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation and operate, and thus, cannot be construed as limiting the present invention. Furthermore, the terms first, second, or third are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. The terms "mounted, connected and connected" in the present invention are to be understood broadly, unless otherwise explicitly specified or limited, for example: can be fixedly connected, detachably connected or integrally connected; they may be mechanically, electrically, or directly connected, or indirectly connected through intervening media, or may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Example 1
And uniformly mixing ethyl acrylate, butyl acrylate, isooctyl acrylate, hydroxyethyl acrylate and methyl acrylate to a reaction kettle. Uniformly mixing an ethyl acetate solvent accounting for 45 percent of the total weight of the mixture and an azodiisobutyronitrile initiator, pouring the mixture into a four-neck flask provided with a thermometer, a mechanical stirrer and a condenser pipe, heating the mixture to 80 ℃ for reaction, timing when the viscosity of a reaction system begins to increase, adding 20 parts of the ethyl acetate solvent into the reaction system after carrying out heat preservation reaction for 1.5 hours, adjusting the rotating speed to 150rap/min to 300rap/min, and stirring for 20 min; and finally, cooling and discharging to obtain the acrylic pressure-sensitive adhesive with the solid content of 30%.
Adding 0.05% of aliphatic polyisocyanate (hexamethylene diisocyanate trimer), 0.2% of polyoxypropylene glycerol ether, 0.2% of polyoxypropylene polyoxyethylene glycerol ether and 0.2% of gamma- (methacryloyloxy) propyl trimethoxy alkane into the prepared pressure-sensitive adhesive in sequence, mixing and stirring uniformly, coating 50 mu of dry adhesive on a release film, placing the release film in a drying oven at 100 ℃ for drying for 5 minutes, taking out, and attaching another layer of release film to finish the preparation of the semi-finished pressure-sensitive adhesive. And then compounding in multiple layers according to the thickness requirement. And finishing the final product.
The product of example 1 was tested for performance and compared to the product performance before process adjustment to obtain the following data:
example of a 200 μ product Peeling force Retention force Fixed load Initial adhesion
Before adjustment 1500 18min 1H 33#
After adjustment 2300 2H 8H 33#
The product in example 1 was filled with PET of different thicknesses, and the defoaming performance was tested under 45 ℃/5KG/20min defoaming parameters and compared with the product before process adjustment to obtain the following data:
Figure BDA0002703731950000031
glue overflow test
Pressure sensitive adhesive sample: 10cm by 10cm, and cutting the periphery regularly.
Vertical samples, both hands rubbing symmetrically left and right (50/25 times) on the glass panel
Weighing clean glass (W1), weighing the residual glue and the clean glass after the glue surface end surface rubs the glass (W2), and obtaining the net weight of the residual glue (W3) from W2 to W1;
and testing the glue overflow degree by a plurality of groups of parallel tests.
As a result: the glue overflowing effect of the product with multiple layers of lamination is better than that of the product with high thickness coated at one time.

Claims (9)

1. The thick glue multilayer laminating process is characterized by being implemented according to the following steps: firstly, preparing a single-layer film: the optical acrylic adhesive is made into a non-base material, and then a layer of release film is respectively attached to the upper bottom layer and the lower bottom layer to form a single-layer pressure-sensitive adhesive;
secondly, membrane separation: separating the single-side release films of the two single-layer films in the step one;
thirdly, laminating: and pressing the single-layer film with the single-side release film removed in the step two through an extruding device.
2. The thick glue multilayer laminating process according to claim 1, wherein the acrylic glue is synthesized according to the following steps:
firstly, adding ethyl acrylate, butyl acrylate, isooctyl acrylate, hydroxyethyl acrylate and methyl acrylate into a reaction kettle, and uniformly mixing to form a raw material;
secondly, uniformly mixing the raw materials, the solvent and the initiator, and pouring the mixture into a four-neck flask provided with a thermometer, a mechanical stirrer and a condenser pipe;
heating the flask to raise the temperature of reactants in the flask to 80 ℃, carrying out heat preservation stirring reaction, wherein the stirring speed is 150rap/min, timing when the viscosity of the system begins to increase, and continuing the heat preservation reaction for 1-1.5 hours;
adding 1-20 parts of solvent into the reaction system, and adjusting the stirring speed to 300rap/min and stirring for 20 min;
and fifthly, cooling and discharging, and adding a curing agent and other auxiliary agents to obtain the colloid A.
3. The thick glue multilayer lamination process according to claim 2, wherein the solvent comprises at least one of: toluene, ethyl acetate; the initiator includes at least one of: oxidant ammonium persulfate, potassium persulfate, reducer sodium bisulfite and azodiisobutyronitrile; the mass of the solvent is 45-65% of that of the raw material, and the mass of the initiator is 40-60% of that of the raw material.
4. The thick glue multilayer laminating process according to claim 2, wherein the curing agent is an isocyanate curing agent L75, and the auxiliary agent comprises: an antifoaming agent, a coupling agent, the antifoaming agent comprising at least one of: high alcohol fatty acid ester complex, polyoxyethylene polyoxypropylene pentaerythritol ether, polyoxyethylene polyoxypropylene amine ether, polyoxypropylene glycerol ether and polyoxypropylene polyoxyethylene glycerol ether, and polydimethylsiloxane; the coupling agent includes at least one of: gamma- (methacryloyloxy) propyltrimethoxysilane gamma-glycidoxypropyltrimethoxysilane, N-beta- (aminoethyl) -gamma-aminopropylmethyldimethoxysilane, which can improve the adhesive effect.
5. The thick glue multilayer laminating process according to claim 2, wherein the single-layer film is manufactured according to the following steps:
firstly, coating colloid A with the thickness of 50-100 mu on a first release film, and putting the first release film into an oven for 5-10 min;
and secondly, attaching a second release film on the surface of the dry glue.
6. The utility model provides a processing equipment of thick gluey multilayer laminating which characterized in that includes: the first single-layer film-laminated release film laminating machine comprises a first peeling device, a second peeling device and a laminating device, wherein the first peeling device separates a first single-layer film-laminated release film, the second peeling device separates a second single-layer film-laminated release film, and the laminating device tightly and closely leans against the removed parts of the first single-layer film and the second single-layer film-laminated release film and bonds the first single-layer film and the second single-layer film-laminated release film together by using pressure.
7. The thick glue multilayer laminating processing equipment according to claim 6, wherein the first stripping equipment comprises: the first cloth rolling wheel, the first cloth rolling wheel of receiving of releasing, first single layer membrane is placed on first cloth rolling wheel of releasing, the one deck of first single layer membrane is from the type membrane and carries out the rolling through first cloth rolling wheel of receiving.
8. The thick glue multilayer laminating processing equipment according to claim 6, wherein the second stripping equipment comprises: the second is put cloth rolling wheel, second and is received the cloth rolling wheel, the second single-layer membrane is placed the second is put on the cloth rolling wheel, the one deck of second single-layer membrane is from the type membrane and is received the cloth rolling wheel through the second and carry out the rolling.
9. The processing equipment for thick adhesive multilayer lamination according to claim 6, wherein the laminating equipment comprises a first extrusion roller shaft, a second extrusion roller shaft and a lamination cloth winding wheel, the first extrusion roller shaft and the second extrusion roller shaft are horizontally arranged, a gap is reserved between the first extrusion roller shaft and the second extrusion roller shaft, the first single-layer film and the second single-layer film pass through the gap together after being separated and are extruded and bonded through the first extrusion roller shaft and the second extrusion roller shaft, and the first single-layer film and the second single-layer film are wound through the lamination cloth winding wheel after being bonded.
CN202011031241.4A 2020-03-31 2020-09-27 Thick glue multilayer laminating process Pending CN112497763A (en)

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CN114672255A (en) * 2022-04-27 2022-06-28 东莞爵士先进电子应用材料有限公司 Production process of solvent type super-thick substrate-free double faced adhesive tape

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Application publication date: 20210316