CN105838046B - A kind of three-layer co-extruded high temperature resistant resistance glue mould release membrance and its production technology - Google Patents

A kind of three-layer co-extruded high temperature resistant resistance glue mould release membrance and its production technology Download PDF

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CN105838046B
CN105838046B CN201610317171.6A CN201610317171A CN105838046B CN 105838046 B CN105838046 B CN 105838046B CN 201610317171 A CN201610317171 A CN 201610317171A CN 105838046 B CN105838046 B CN 105838046B
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resistance glue
high temperature
mould release
release membrance
layer
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CN105838046A (en
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牛军强
詹浩
周学军
陈百怀
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Long Yu Electronic Technology (jiangsu) Co Ltd
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Long Yu Electronic Technology (jiangsu) Co Ltd
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    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L67/00—Compositions of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Compositions of derivatives of such polymers
    • C08L67/02—Polyesters derived from dicarboxylic acids and dihydroxy compounds
    • 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
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/001—Combinations of extrusion moulding with other shaping operations
    • B29C48/0013—Extrusion moulding in several steps, i.e. components merging outside the die
    • 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
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/001—Combinations of extrusion moulding with other shaping operations
    • B29C48/0018—Combinations of extrusion moulding with other shaping operations combined with shaping by orienting, stretching or shrinking, e.g. film blowing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B27/08—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/18—Layered products comprising a layer of synthetic resin characterised by the use of special additives
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/36—Layered products comprising a layer of synthetic resin comprising polyesters
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
    • C08J5/18—Manufacture of films or sheets
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2367/00—Characterised by the use of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Derivatives of such polymers
    • C08J2367/02—Polyesters derived from dicarboxylic acids and dihydroxy compounds
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2423/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
    • C08J2423/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
    • C08J2423/04—Homopolymers or copolymers of ethene
    • C08J2423/08—Copolymers of ethene
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2477/00—Characterised by the use of polyamides obtained by reactions forming a carboxylic amide link in the main chain; Derivatives of such polymers
    • C08J2477/06—Polyamides derived from polyamines and polycarboxylic acids
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2201/00—Properties
    • C08L2201/08—Stabilised against heat, light or radiation or oxydation
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2203/00—Applications
    • C08L2203/16—Applications used for films
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2203/00—Applications
    • C08L2203/20—Applications use in electrical or conductive gadgets
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2205/00—Polymer mixtures characterised by other features
    • C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2205/00—Polymer mixtures characterised by other features
    • C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
    • C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2207/00—Properties characterising the ingredient of the composition
    • C08L2207/06—Properties of polyethylene
    • C08L2207/066—LDPE (radical process)

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)

Abstract

The invention discloses a kind of three-layer co-extruded high temperature resistant resistance glue mould release membrance and its production technology, it is combined by two layers of outer membrane and one layer of resistance glue filling film, outer membrane includes release top film and release lower membrane, and resistance glue filling film is arranged between release top film and release lower membrane；The mass fraction of each component is as follows in outer membrane：PBT polybutylene terephthalate (PBT)s 49~51%, PA66 polyamides 24~26%, compatilizer 5% and fiberglass reinforced plastics 20%；The mass fraction for hindering each component in glue filling film is as follows：PBT polybutylene terephthalate (PBT)s 68~72%, EVA ethylene-vinyl acetate copolymers 14~16%, LDPE low density polyethylene (LDPE)s 9~11%, compatilizer 3% and stabilizer 2%；The 30% of release top film and the equal mould release membrance gross thickness of the thickness of release lower membrane in high temperature mould release membrance；The mould release membrance of the present invention improves it and hinders colloidality energy, its plastic emitting length is 0.9mm, can be effectively improved the qualification rate of FPC flexible PCBs when ensureing its resistance to elevated temperatures.

Description

A kind of three-layer co-extruded high temperature resistant resistance glue mould release membrance and its production technology
Technical field
The present invention relates to the auxiliary equipment field of flexible PCB production, more particularly to a kind of flexible PCB that is applied to give birth to The three-layer co-extruded high temperature resistant resistance glue mould release membrance and its production technology of production.
Background technology
Flexible PCB is that have height reliability to be a kind of made of base material using polyimides or polyester film, excellent Flexible printed circuit.Abbreviation soft board or FPC, there is the characteristics of high Distribution density, in light weight, thickness of thin.It is mainly used in Many products such as mobile phone, notebook computer, PDA, digital camera, LCM.
Mould release membrance determines the quality of lamination in the pressing of FPC flexible PCBs, and it is also that FPC plates factory is most important to be laminated Processing procedure.Therefore choosing for mould release membrance is very crucial, mould release membrance used wants high temperature resistant to cut difficult deformation, and flatness is good, and renaturation effect is good, Grown using effective time.Here it is three most basic big requirements of FPC lamination mould release membrances：Separation property, temperature tolerance, ductility.
1）Separation property.So-called separation property, refer to flexible PCB lamination after, mould release membrance can easily with flexible circuit Plate separates, and the separating property of mould release membrance and the roughness of release surface have much relations.
2）Temperature tolerance.Mould release membrance is under continuous warming in lamination（190 DEG C of temperature；Precompressed 10S；It is molded 200S；Pressure 100kg/cm2）Do not allow friability.
3）Ductility, that is, hinder colloidality.It is mainly used in consent in the lamination of FPC flexible PCBs, prevents glue penetration to sheet material, Sheet material is polluted, improves the success rate and production efficiency of wiring board.
Presently relevant product can not meet above-mentioned requirements simultaneously, it is necessary to which collocation uses.Also it is equal on surface to have portioned product One layer of very thin silica gel mould release of even coating forms, and can produce silicone oil precipitation in use, pollute circuit board.
The content of the invention
For above-mentioned problem, present invention aims at providing, a kind of resistance to elevated temperatures is good, has good separation Property and ductility be applied to flexible PCB and produce three-layer co-extruded mould release membrance.
In order to achieve the above object, the technical solution adopted by the present invention is as follows：A kind of three-layer co-extruded high temperature resistant resistance glue is release Film, described high temperature mould release membrance are combined by two layers of outer membrane and one layer of resistance glue filling film, and described outer membrane includes release top Film and release lower membrane, described resistance glue filling film are arranged between release top film and release lower membrane.
The mass fraction of each component is as follows in outer membrane of the present invention：PBT polybutylene terephthalate (PBT)s 49~ 51%th, PA66 polyamides 24~26%, compatilizer 5% and fiberglass reinforced plastics 20%.
The PBT polybutylene terephthalate (PBT)s of the present invention are the condensation polymers of terephthalic acid (TPA) and 1,4- butanediols；It is Those semi-crystalline materials, there are extraordinary chemical stability, mechanical strength, electrical insulation characteristics and heat endurance；Because PBT is in molten condition Lower good fluidity, viscosity is low, and " curtain coating " phenomenon easily occurs；Therefore from PBT as base material in technical scheme；PBT has There is high-fire resistance, its fusion temperature is 225~275 DEG C；If one is improved by modification, its tensile strength, bending strength to PBT More than times, heat distortion temperature greatly improves；Can the long-term work at 140 DEG C.
The PA66 polyamides of the present invention are the total of the high polymer containing amide group in macromolecular main chain repeat unit Claim；PA66 has higher fusing point in polyamide material, and it is semi-crystal-crystalline material, can also keep stronger in higher temperature Strength and stiffness, it is heat-resist, can at 150 DEG C long-term phase use.
The present invention improves PA66 heat distortion temperatures by the fiberglass reinforced plastics in formula, while to the resistance to height of PBT Temperature, high rigidity are improved, and reduce the adhesive with FPC.Fiberglass reinforced plastics are on the basis of original pure plastics On, glass fibre and other auxiliary agents are added, so as to improve the use range of material, after fiberglass reinforced, glass is high temperature resistant material Material, therefore, the heat resisting temperature ratio of reinforced plastics are not added with improving much before glass, especially nylon-type plastics.Glass increases simultaneously After strong, due to the addition of glass, being mutually shifted between the macromolecular chain of plastics, therefore, the shrinkage factor of reinforced plastics are limited Decline a lot, rigidity also greatly improves.
The mass fraction of each component is as follows in resistance glue filling film of the present invention：PBT polybutylene terephthalate (PBT)s 68~72%, EVA ethylene-vinyl acetate copolymers 14~16%, LDPE low density polyethylene (LDPE)s 9~11%, compatilizer 3% and stabilizer 2%。
LDPE low density polyethylene (LDPE)s in the present invention are using ethene as monomer, under 98. 0~294MPa high pressure, are used Oxygen or organic peroxide are initiator, the polymer of aggregated gained；It is the waxy solid that a kind of milky is translucent Resin, nontoxic, softening point is relatively low；Being melted more than softening point, its heat sealability, moulding processability are fine, and flexibility is good, Toughness, lower temperature resistance are fine.
The EVA added in the present invention causes product to have good flexibility and elasticity, still has at -50 DEG C preferable Pliability, the transparency and lustrous surface, chemical stability is good, and anti-aging and resistance to ozone intensity is good, nontoxicity.
Release top film and the equal mould release membrance gross thickness of the thickness of release lower membrane in high temperature mould release membrance of the present invention 30%, the thickness of resistance glue filling film is the 40% of mould release membrance gross thickness.
Compatilizer of the present invention is AX8900 resins, and described AX8900 resins are ethene, methyl acrylate, methyl The terpolymer of glycidyl acrylate three.
Stabilizer of the present invention is one or more kinds of mixing in sulfur-bearing antioxidant and phosphite antioxidant Thing.Described sulfur-bearing antioxidant includes 2,4- bis--(n-octylthiomethylene) -6- methylphenols, (dodecanes of 2,4- bis- Base sulfidomethyl) -6- methylphenols, dilauryl thiodipropionate, the double stearyls of thio-2 acid.Described phosphite ester Kind antioxidant includes three (2,4- di-tert-butyl-phenyl) phosphite esters, four (2,4- di-tert-butyl-phenyl -4,4 '-biphenyl Base) bis-phosphite, three (nonyl phenyl) phosphite ester, distearyl pentaerythritol diphosphite or pentaerythrites Diphosphite two (2,4- di-tert-butyl phenyl) ester.
The production technology of three-layer co-extruded high temperature resistant resistance glue mould release membrance of the present invention, its production technology include following operation Step：
1）Being put into according to its mass ratio in high-speed mixer for each component in outer membrane is mixed 3 times, incorporation time is 3min/ times, melt blending is carried out using double screw extruder, temperature control screw speed 280r/min, passes through at 270 DEG C Shearing, mixing, the tie rod pelletizing of screw rod, it is standby after outer membrane granule is dried 3 hours in dryer with 140 DEG C；
2）Being put into according to its mass ratio in high-speed mixer for each component it will mix 3 times in resistance glue filling film, during mixing Between be 3min/ time, using double screw extruder progress melt blending, temperature control at 260 DEG C, screw speed 260r/min, By the shearing of screw rod, mixing, tie rod pelletizing, resistance glue is filled standby after membrane granule is dried 3 hours in dryer with 70 DEG C；
3）Produced using the combination of three extruders and casting machine, wherein extruder A and extruder C are outer for conveying Film, extruder B are used to conveying resistance glue filling film, the product of three extruders extrusion have by high temperature T-shaped mould carry out it is compound outside film, Then three-layer co-extruded shaping, cooling and stretching are carried out in casting machine, finally by adjusting bolt rotating speed and tension adjustment, is drawn Thickness is 100~190 μm of product.
Its concrete operations is：Extruder A and C screw rod are first opened, die cavity is rinsed, after die orifice film surface is complete Extruder B screw rod is opened, after die orifice film surface is smooth, follow-up each driving drum is opened, carries out wearing film according to Fig. 2；At this moment The temperature control of rubber roll 5 is at 30 DEG C, and the temperature control of format roll 6 is at 50 DEG C, and chill roll 7,8 temperature controls are at 150 DEG C；During should see Calibrator curve is examined, by adjusting bolt rotating speed and tension adjustment, draws the product that thickness is 100~190 μm；Film surface flatness Leveling can be carried out by die orifice adjustment bolt.
Raw materials for production PBT in outer membrane of the present invention and resistance glue filling film, using drying process is preceding needed, 110 2.5~3.5h is dried at a temperature of~120 DEG C, raw material PBT humidity ＜ 0.03% after drying.
Raw materials for production PA66 in outer membrane of the present invention, it is using preceding needing drying process, it is empty in 85 DEG C of heat 4~6h of drying process in gas.
The step 3 of the present invention）Production process in extruder A and extrusion C screw rod heating-up temperature for 260~ 270 DEG C, the temperature that device is collaborated on casting machine is 245~255 DEG C, and the temperature of T-shaped mould tool is 230~235 DEG C.
The advantage of the invention is that：The mould release membrance of the present invention can be expired simultaneously by the control of component reasonable distribution and technique The various demands of sufficient FPC flexible PCBs, especially for its resistance to elevated temperatures, at the same time the separation property of product of the invention and Ductility also improves a lot, and its plastic emitting length is 0.9mm, can be effectively improved the qualification rate of FPC flexible PCBs, meets The production requirement of FPC flexible PCBs.
PBT is most tough and tensile thermoplastic in outer membrane, the easy casting film-forming of its good fluidity, its temperature tolerance, mechanical strength Height, by the modification of fibre resin, it is a little more prominent；PA66 fusing points are high, and excellent intensity and rigidity, are avoided at high temperature Bonding processes are Nian Jie with other materials, and the addition of fibre resin, its performance further improves, and increase its stability；Pass through phase Holding agent can be such that PBT, PA66 more preferably merges；Elasticity and LDPE shock resistance in internal layer mainly using EVA play filling Effect, and adhesion is carried out by PBT molecules contained by internal layer and outer membrane PBT molecules, form three-layer thin-film.
Brief description of the drawings
Fig. 1 is the structure diagram of the mould release membrance of the present invention；
Fig. 2 is the device connection figure in the production technology of the present invention；
Wherein, a release tops film, b resistance glue filling films, the release lower membranes of c, 1 extruder A screw rods, 2 extruder B Screw rod, 3 extruder C screw rods, 4 T-shaped moulds tool, 5 rubber rolls, 6 format rolls, 7 chill roll A, 8 chill roll B, 9 survey Thick instrument, 10 tensioners, 11 reels.
Embodiment
The present invention is described in further detail with embodiment for explanation below in conjunction with the accompanying drawings.
Unless otherwise instructed, the raw materials for production mentioned in following examples of the invention and plant equipment are on the market Commercially available convenient source and plant equipment.This patent uses the PA3018 modelings that fiberglass reinforced plastics are that E.I.Du Pont Company produces Material.
Embodiment 1：As shown in figure 1, a kind of three-layer co-extruded high temperature resistant resistance glue mould release membrance, the mass fraction of each component in outer membrane It is as follows：PBT polybutylene terephthalate (PBT)s 49%, PA66 polyamides 26%, AX8900 resins 5% and glass fibre increase Strong plastics 20%；The mass fraction for hindering each component in glue filling film is as follows：PBT polybutylene terephthalate (PBT)s 68%, EVA second Alkene-acetate ethylene copolymer 16%, LDPE low density polyethylene (LDPE)s 11%, AX8900 resins 3% and stabilizer 2%；It is of the present invention The 30% of release top film and the equal mould release membrance gross thickness of the thickness of release lower membrane in high temperature mould release membrance, hinder the thickness of glue filling film For the 40% of mould release membrance gross thickness.
Embodiment 2：As shown in figure 1, a kind of three-layer co-extruded high temperature resistant resistance glue mould release membrance, the mass fraction of each component in outer membrane It is as follows：PBT polybutylene terephthalate (PBT)s 51%, PA66 polyamides 24%, AX8900 resins 5% and glass fibre increase Strong plastics 20%；The mass fraction for hindering each component in glue filling film is as follows：PBT polybutylene terephthalate (PBT)s 72%, EVA second Alkene-acetate ethylene copolymer 14%, LDPE low density polyethylene (LDPE)s 9%, AX8900 resins 3% and stabilizer 2%；Height of the present invention The 30% of release top film and the equal mould release membrance gross thickness of the thickness of release lower membrane in warm mould release membrance, the thickness of resistance glue filling film are The 40% of mould release membrance gross thickness.
Embodiment 3：As shown in figure 1, a kind of three-layer co-extruded high temperature resistant resistance glue mould release membrance, the mass fraction of each component in outer membrane It is as follows：PBT polybutylene terephthalate (PBT)s 50%, PA66 polyamides 25%, AX8900 resins 5% and glass fiber reinforcement Plastics 20%；The mass fraction for hindering each component in glue filling film is as follows：PBT polybutylene terephthalate (PBT)s 70%, EVA ethene- Acetate ethylene copolymer 15%, LDPE low density polyethylene (LDPE)s 10%, AX8900 resins 3% and stabilizer 2%；High temperature of the present invention The 30% of release top film and the equal mould release membrance gross thickness of the thickness of release lower membrane in mould release membrance, the thickness of resistance glue filling film be from The 40% of type film gross thickness.
Embodiment 4：The production technology of three-layer co-extruded high temperature resistant resistance glue mould release membrance of the present invention, its production technology include Following operating procedure：
1）By the raw materials for production PBT in outer membrane of the present invention and resistance glue filling film, using preceding needing drying process, 110~ 2.5~3.5h is dried at a temperature of 120 DEG C, raw material PBT humidity ＜ 0.03% after drying.
2）By the raw materials for production PA66 in outer membrane, using drying process is preceding needed, it is dried in 85 DEG C of hot-air Handle 4~6h.
3）Being put into according to its mass ratio in high-speed mixer for each component in outer membrane is mixed 3 times, incorporation time is 3min/ times, melt blending is carried out using double screw extruder, temperature control screw speed 280r/min, passes through at 270 DEG C Shearing, mixing, the tie rod pelletizing of screw rod, it is standby after outer membrane granule is dried 3 hours in dryer with 140 DEG C.
4）Being put into according to its mass ratio in high-speed mixer for each component it will mix 3 times in resistance glue filling film, during mixing Between be 3min/ time, using double screw extruder progress melt blending, temperature control at 260 DEG C, screw speed 260r/min, By the shearing of screw rod, mixing, tie rod pelletizing, resistance glue is filled standby after membrane granule is dried 3 hours in dryer with 70 DEG C.
5）Produced using the combination of three extruders and casting machine, wherein extruder A and extruder C are outer for conveying Film, extruder B are used to conveying resistance glue filling film, the product of three extruders extrusion have by high temperature T-shaped mould carry out it is compound outside film, Then three-layer co-extruded shaping, cooling and stretching are carried out in casting machine, finally by adjusting bolt rotating speed and tension adjustment, is drawn Thickness is 100~190 μm of product；Extruder A and extrusion C screw rod heating-up temperature are 260~270 DEG C, are collaborated on casting machine The temperature of device is 245~255 DEG C, and the temperature of T-shaped mould tool is 230~235 DEG C.
Using above-mentioned formula and method, the performance parameter of the high temperature mould release membrance finally given is as shown in the table：
。
Embodiment 5：It is formulated contrast test；In the case where process conditions and formula dosage are constant, to the formula of the present invention In in each component carry out contrast test, obtained result is as shown in the table：
As seen from the above table：PBT contents in the outer membrane of the present invention should not be excessive, can excessively cause the comprehensive of final products It can be decreased obviously, particularly it moulds fusing point and resistance colloidality energy, and when content is excessive, it hinders glue hydraulic performance decline, when its content mistake When few, it, which hinders colloidality, to rise, but it is moulded fusing point and can be greatly reduced, and it is broken occurrence rate and increased, and plastic emitting length is long；In This simultaneously, the resistance glue of product filling film thickness can also influence the performance of final products with mould release membrance gross thickness ratio, excessively or The very few combination property that can cause final products declines.
Embodiment 6：Method contrast test；It is formulated in using embodiment 3, the constant situation of other process conditions variables Under, contrast test is carried out to the parameter in the production technology of the present invention, obtained result is as shown in the table：
As seen from the above table：In the present invention in technological temperature, the film of 100~190 μ m thicks has preferably synthesis Performance, when its thickness changes, the fracture occurrence rate and plastic emitting length of its final products can have an impact, and can not meet The production requirement of FPC flexible PCBs, and when the production temperature of product changes, the heat resistance of final products is sent out Raw considerable influence, particularly collaborate the temperature of device and T moulds.
It should be noted that above-mentioned is only presently preferred embodiments of the present invention, not it is used for limiting the protection model of the present invention Enclose, any combination or equivalents made on the basis of above-described embodiment belong to protection scope of the present invention.

Claims (8)

  1. A kind of 1. three-layer co-extruded high temperature resistant resistance glue mould release membrance, it is characterised in that described high temperature resistant hinder glue mould release membrance by two layers outside Film and one layer of resistance glue filling film combine, and described outer membrane includes release top film and release lower membrane, and described resistance glue is filled out Film is filled to be arranged between release top film and release lower membrane；
    The mass fraction of each component is as follows in described outer membrane：PBT polybutylene terephthalate (PBT)s 49~51%, PA66 polyamides Polyimide resin 24~26%, compatilizer 5% and fiberglass reinforced plastics 20%；
    The mass fraction of each component is as follows in described resistance glue filling film：PBT polybutylene terephthalate (PBT)s 68~72%, EVA ethylene-vinyl acetate copolymers 14~16%, LDPE low density polyethylene (LDPE)s 9~11%, compatilizer 3% and stabilizer 2%；
    Release top film and the thickness of release lower membrane are mould release membrance gross thickness in described high temperature resistant resistance glue mould release membrance 30%, the thickness of resistance glue filling film is the 40% of mould release membrance gross thickness；
    Described three-layer co-extruded high temperature resistant resistance glue mould release membrance is produced using the combination of three extruders and casting machine, wherein squeezing Go out machine A and extruder C to be used to convey outer membrane, extruder B is used to convey resistance glue filling film, and the product of three extruder extrusions passes through It is compound outside high temperature T-shaped mould tool progress film, three-layer co-extruded shaping, cooling and stretching are then carried out in casting machine, finally by tune Whole screw speed and tension adjustment, draw the product that thickness is 100~190 μm, wherein extruder A and extrusion C screw rod heating Temperature is 260~270 DEG C, and the temperature that device is collaborated on casting machine is 245~255 DEG C, and the temperature of T-shaped mould tool is 230~235 DEG C.
  2. 2. three-layer co-extruded high temperature resistant resistance glue mould release membrance according to claim 1, it is characterised in that described compatilizer is AX8900 resins, described AX8900 resins are ethene, methyl acrylate, the ternary of GMA three are total to Polymers.
  3. 3. three-layer co-extruded high temperature resistant resistance glue mould release membrance according to claim 1, it is characterised in that described stabilizer be containing One or more kinds of mixtures in sulphur antioxidant and phosphite antioxidant.
  4. 4. three-layer co-extruded high temperature resistant resistance glue mould release membrance according to claim 3, it is characterised in that described sulfur-bearing antioxidant Including 2,4- bis--(n-octylthiomethylene) -6- methylphenols, 2,4- bis- (dodecylthiomethyl) -6- methylbenzenes The double stearyls of phenol, dilauryl thiodipropionate, thio-2 acid.
  5. 5. three-layer co-extruded high temperature resistant resistance glue mould release membrance according to claim 3, it is characterised in that described phosphite ester resists It is double that oxygen agent includes three (2,4- di-tert-butyl-phenyl) phosphite esters, four (2,4- di-tert-butyl-phenyl -4,4 '-xenyls) The double phosphorous of phosphite ester, three (nonyl phenyl) phosphite esters, distearyl pentaerythritol diphosphite or pentaerythrite Sour two (2,4- di-tert-butyl phenyl) esters.
  6. 6. a kind of production technology of three-layer co-extruded high temperature resistant resistance glue mould release membrance as claimed in claim 1, it is characterised in that described Production technology include following operating procedure：
    1）Each component in outer membrane to be put into high-speed mixer according to its mass ratio and mixed 3 times, incorporation time is 3min/ times, Melt blending is carried out using double screw extruder, temperature control screw speed 280r/min, passes through cutting for screw rod at 270 DEG C Cut, be kneaded, tie rod pelletizing, it is standby after outer membrane granule is dried 3 hours in dryer with 140 DEG C；
    2）Each component in resistance glue filling film is put into high-speed mixer according to its mass ratio and mixed 3 times, incorporation time is 3min/ times, melt blending is carried out using double screw extruder, temperature control screw speed 260r/min, passes through at 260 DEG C Shearing, mixing, the tie rod pelletizing of screw rod, resistance glue is filled standby after membrane granule is dried 3 hours in dryer with 70 DEG C；
    3）Being produced using the combination of three extruders and casting machine, wherein extruder A and extruder C are used to convey outer membrane, Extruder B is used to conveying resistance glue filling film, and the product of three extruders extrusion has by high temperature T-shaped mould to carry out compound outside film, connects And three-layer co-extruded shaping, cooling and stretching are carried out in casting machine, finally by adjusting bolt rotating speed and tension adjustment, draw thickness Spend the product for 100~190 μm.
  7. 7. the production technology of three-layer co-extruded high temperature resistant resistance glue mould release membrance according to claim 6, it is characterised in that described Raw materials for production PBT in outer membrane and resistance glue filling film, using drying process is preceding needed, dried at a temperature of 110~120 DEG C 2.5~3.5h, raw material PBT humidity ＜ 0.03% after drying.
  8. 8. the production technology of three-layer co-extruded high temperature resistant resistance glue mould release membrance according to claim 6, it is characterised in that described Raw materials for production PA66 in outer membrane, using drying process is preceding needed, by it in 85 DEG C of hot-air 4~6h of drying process.
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CN106273959A (en) * 2016-08-11 2017-01-04 厦门新旺新材料科技有限公司 Three layers of resistance glue mould release membrance
CN111993731B (en) * 2019-05-27 2023-11-14 宁波长阳科技股份有限公司 Foaming release film and preparation method thereof
CN111993734A (en) * 2019-05-27 2020-11-27 宁波长阳科技股份有限公司 High-temperature-resistant release film and preparation method thereof
CN110254012B (en) * 2019-07-20 2021-08-24 福建省凯安包装科技有限公司 Preparation method of hydrophobic three-layer co-extrusion composite film
CN112622312A (en) * 2020-12-29 2021-04-09 宁波长阳科技股份有限公司 Release film and preparation method and application thereof
CN115011277B (en) * 2022-08-09 2022-11-15 宁波长阳科技股份有限公司 PBT release film and preparation method and application thereof
CN117962446A (en) * 2023-11-30 2024-05-03 惠州市贝斯特膜业有限公司 Adhesive-resistant release film for FPC board and production process thereof

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