CN1840324A - Method of manufacturing release film - Google Patents
Method of manufacturing release film Download PDFInfo
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- CN1840324A CN1840324A CN 200510059659 CN200510059659A CN1840324A CN 1840324 A CN1840324 A CN 1840324A CN 200510059659 CN200510059659 CN 200510059659 CN 200510059659 A CN200510059659 A CN 200510059659A CN 1840324 A CN1840324 A CN 1840324A
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- release membrance
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Abstract
The invention discloses a parting film preparing method, which is characterized by the following: using one kind or at least one inlay of pressed plastic material for base material; coating parting agent on base material film with surface applying technique to get lacerative parting film on at least one side; keeping the design of tearing without burr and chip.
Description
Technical field
The present invention relates to a kind of preparation method of mould release membrance; be meant self-adhesive label, paster one side adhesive-layer especially; or adhesive-layer surface, the two-sided tape positive and negative mould release membrance that temporary protection viscose face is used in combination before pasting use; it has good tear characteristics in the use, and can not produce burr, chip at its tear fracture edge.
Background technology
At present; general various adhesive tape, label or paster (the adhesive tapes that uses; labels or stickers); normal combination applying one has temporary protection, and it sticks together a release base material (release liner) of glue face; as release liners (releasepaper) or mould release membrance (release film), make stick together the glue face can be not contaminated before affixed object is sticked together in applying and lose tackness.Release substrate surface has at least one side to be coated with mould release, so that a lower surface energy to be provided.When the viscose applying contacted release, release interface provides two major functions: 1, temporary protection glue face was not lost the function of adhesive properties by extraneous contamination; 2, with next-door neighbour's viscose when release face is peeled off, can peel off or remove separated type material easily, and not injure the viscose rerum natura.Conventional junction rubber alloy band, kind from release base material (release liner) material that sticks uses such as label (self-adhesive labelstock) or paster is a lot of, for example north America region country uses superpressure light brown paper (super calendered Kraft paper) mostly, European countries are then based on glassine paper (glassinepaper), the country that borders on the sea such as Asian countries such as Japan then adopts the single or double plastics to drench the brown paper of film coating mostly because of environment for use humidity is higher, then use nonhygroscopic plastic foil always as release base material, because of it has the high resistant water-based as for other area.In addition, also begin this year to widely apply gradually polyethylene (PE), polypropylene (PP), agate to draw plastic foils (plastic film) such as polyester film (PET), polystyrene, polyvinyl chloride as release base material.In all release base materials of the whole world in 2003, be that the mould release membrance demand of base material has reached 12% of aggregate demand with the plastic foil, and still in shooting up.Above-mentioned release liners is because of being subjected to historic evolution use habit more of a specified duration, paper base material has easy-to-rupture, its convenience is arranged in the use, if as in conjunction with having self-adhesive label or the paster application that easy-to-rupture adhesive tape such as two-sided cotton paper adhesive tape maybe can be write, the user can directly tear by needed two-sided tape length.But in actual application; release liners regular meeting in tearing the process of getting produces fiber fragment (fiber debris); environment arround regular meeting drops and pollutes; particularly in scientific and technological electronic product and biochemical technology process of producing product; require dustless with clean operating environment; this moment, the fiber fragment that drops just had its negative effect, therefore, and electronics industry or the world of medicine or require the industry of dustfree environment condition not use.With the plastic material is the mould release membrance that base material makes, often be selected from as agate draw polyester film (Mylar polyester film, PET), the mould release membrance that makes of biaxial stretched polypropylene film (BOPP) and polyethylene (PE) film.When using general polyester, plastic foil as mould release membrance, though there are not to have when tearing off the misgivings that the edge falls bits in the use as release liners, the pollution of also can the association chip not dropping, but because of the extensibility plastic foil has high tear resistance, the user is difficult for tearing by Len req.For intercepted length meets required adhesive tape, just must cooperate cutting appliances such as scissors or blade to use, this measure not only bothers, and often need purchase cutter in addition, do not have convenience when causing adhesive tape to use, and the user also must spend the utensil that dicing tape is bought in extra spending, on actual the use its inconvenience is arranged.When particularly using the soft in essence material (high elongation characteristic) that is stretched easily, extends to blow a bag film and make mould release membrance as polyethylene, the intrinsic propesties that its material extends because of height, can form when being difficult for tearing and tearing by force extremely rough and the not concordant rupture cross-section, also can influence and take the adhesive tape operation and go up puzzlement with not attractive in appearance.
Therefore; cooperate known no base material or have base material easily to tear two-sided tape the release liner base material (release liner) that is used in combination; for cooperating the tearing type utilization of adhesive tape; the material of selected release liner is generally stationery; yet paper is the material with fiber and other additive; in tearing the process of getting adhesive tape, there is the generation of fiber and chip in regular meeting.Therefore, when use has the tearing type adhesive tape of this type of release liners in dust free room, not only can increase the contamination of products chance by the fiber fragment that release liners produced, cause reducing the qualification rate in the production process, more can increase the maintenance load of dust free room, improve cost of manufacture.And the application of release liners is for the lenten area of the forest reserves, the cost that obtains paper is higher relatively, owing to the high various organic and inorganic additive of content is arranged in the composition of paper, if will organicly separate from release liners with inorganic additive various, required cost is higher when reclaiming.Moreover, in actual applications, for avoiding release liners be out of shape by environment temperature and humidity effect, often by at the list of release liners base material film or two-sidedly carry out the plastic-coated coating, make the release liners of good weatherability, for example the polyethylene T type extruder with melting carries out the processing of molten polyethylene (PE) coating pouring film back cover on single face or two surface of release liners base material film, its shortcoming is that the surface is difficult for separating recovery for the release liners that plastics drench film after use is abandoned, only can finally handle with combustion system.
Summary of the invention
At the problems referred to above, first purpose of the present invention is to provide a kind of preparation method of mould release membrance, not only structural strength is enough for the mould release membrance that makes with this method, easy fracture not on the packaging, and can tear by the length of tape of any needs, and the section of the adhesive tape of getting that tears is smooth, in addition, can not produce fiber fragment in use, be very suitable for dust free room scientific and technological industry and medical clean environment and use.
Second purpose of the present invention is to provide a kind of preparation method of mould release membrance, and it utilizes spreading (impression) technology to be processed processing in manufacturing process, makes mould release membrance have tearable property on using.Therefore, when the mould release membrance made from the present invention is applied to the tearing type adhesive tape, the principle of concentrating at tear place stress by the mould release membrance base material, can be easily by the place of tearing take easily desire to tear the length of getting.
The 3rd purpose of the present invention is to provide a kind of manufacture method of mould release membrance, and it can make off-type force obtain good control, and any place on the mould release membrance of manufacturing all can be concentrated characteristic be torn by stress to get.
The 4th purpose of the present invention is to provide a kind of manufacture method of mould release membrance, it is with the base material of plastics as the making mould release membrance, have the easy tear fracture characteristics of release liners (Release Paper) in the use, and the advantage that the edge does not have burr, fiber and chip to drop when keeping tear fracture simultaneously.
The 5th purpose of the present invention is to provide a kind of manufacture method of mould release membrance, its employed mould release membrance material range of choice is wider, temperature applicable range is relatively large, can make the mould release membrance of single face coating mould release (Release agent coating), or the two sides all is coated with the two-sided mould release membrance with the difference off-type force with acquisition tool single face off-type force; The single face mould release membrance is used as the protection mucilage glue surface for being useful in self-adhesive label or paster, in addition two-sided mould release membrance then is applied on being used in combination of two-sided tape.
The 6th purpose of the present invention is to provide a kind of manufacture method of mould release membrance, its the coating processing and manufacturing that can continue to use existing general release liners or mould release membrance is equipped with, and need not increase new equipment again, simultaneously, to area, the country of famine forest paper wood resource, can provide splendid paper substitution material.
For achieving the above object, the preparation method of a kind of mould release membrance provided by the present invention, it includes the following step:
A, there is the press nips of the prominent shape structure of plural number point that rete is carried out spreading on monofilm or compound tunic apparatus, obtains a film substrate with a plurality of gaps;
B, the monofilm of again spreading being finished or compound tunic carry out the mould release coating of at least one outer surface;
C, afterwards to the dried or cured film formation reaction that the monofilm that is coated with the coating of single face mould release or two-sided mould release or compound tunic carry out release coating layer, makes a mould release membrance with easy tear fracture characteristics.
The preparation method of another kind of mould release membrance provided by the invention, it includes the following step:
A, carry out the mould release coating at monofilm or at least one outer surface of compound tunic;
B, will be coated with the monofilm of single face mould release or two-sided mould release or the dried or cured film formation reaction that compound tunic carries out release coating layer again;
C, then monofilm with single face mould release or two-sided mould release or compound tunic to finishing dried or cured film formation reaction, with press nips rete is carried out spreading with the prominent shape structure of plural number point, acquisition one has the film substrate in a plurality of gaps, makes a mould release membrance with easy tear fracture characteristics.
The preparation method of the third mould release membrance provided by the invention, it includes the following step:
A, there is the press nips of the prominent shape structure of plural number point that rete is carried out spreading on monofilm or compound tunic apparatus, makes a film substrate with a plurality of gaps;
B, at described at least one surperficial coating one blank medium of film substrate with a plurality of gaps;
C, at least one outer surface that more at least one surface with a plurality of gaps is combined with the monofilm of blank medium or compound tunic carry out single face mould release or the coating of two-sided mould release;
D, with the described monofilm of single face mould release or two-sided mould release or the dried or cured film formation reaction that compound tunic carries out the mould release coating layer of being coated with, make mould release membrance with easy tear fracture characteristics.
The mould release membrance that adopts technical scheme provided by the present invention to make has the characteristics of easy tear fracture during use, and the tear fracture edge can not produce burr and the situation of falling bits, is applicable to dust free room environment, medical environment, electronics industry manufacturing environment or general environment.Can replace the high release liners of manufacturing cost, and reduce because of obtaining paper material, and cause destroying the pressure of forest ecological environment.In addition, mould release membrance is not changed by humidity can when using influence, and it is comparatively even to make last its material thickness, and processing procedure is convenient, and can improve the working modulus of its good finished product.
Description of drawings
Fig. 1 is the process block diagram of the present invention's first implementation method;
Fig. 2 is the making schematic diagram of the present invention's first implementation method;
Fig. 3 is the process block diagram of the present invention's second implementation method;
Fig. 4 is the making schematic diagram of the present invention's second implementation method;
Fig. 5 is the process block diagram of the present invention's the 3rd implementation method;
Fig. 6 is the making schematic diagram of the present invention's the 3rd implementation method.
The specific embodiment
According to embodiments of the invention and conjunction with figs., the concrete steps of the preparation method of mould release membrance provided by the present invention are described below.
The base material that mould release membrance is used is easily torn in preparation, has many spreading technology to use, and comprising: a base material rete is provided; And the processing procedure of this base material rete of spreading, on this base material rete, to form a plurality of gaps (gap).In its design, can decide by the factors such as number, shape, distribution density, distributing position, base material film layer thickness and base material film layer material of controlling gap on this base material rete, the spreading processing procedure also comprises comprehensive spreading or regioselectivity spreading, in the spreading processing procedure required process equipment can adopt continous way to press nips or batch to flattening platform prescription formula, under the automated process demand, has favorable economic benefit with the former especially.Wherein to press nips or to flatten that one in the platform group taken turns or the surface of a platform on have the prominent shape structure of a plurality of points, point prominent shape structure in surface can be made by following method: (I) the protruding wire wheel of tool high rigidity point (wire brush) or pinwheel (needleroller); (II) with electro-plating method (electroplating) the similar uniform particles of polyhedron diamond grains or high rigidity is being plated on the surface; (III) high rigidity is organic with radium-shine cutting mode, metal or ceramic material engraving (engraving) becomes to have the spreading face of the prominent shape structure of even plural number point, the pottery that for example radium-shine cutting forms (anilox roll) wheel; (IV) utilize mechanically rolling type (tooling) processing mode, the metal surface die mould of one demand hardness is become required surperficial even sharp male structure, again by methods such as high tempering, ultrasonic wave surperficial cure process (hardening treatment) in addition, make last required spreading face subsequently; (V) metal surface is carried out carry out surperficial cure process again and become hard spreading face after chemical electrolysis is etched into even sharp male structure.Corresponding with roll milling wheel in addition can be the materials such as metal, plastic-steel or pottery with suitable hardness to pinch roller or to the pressure surface material.As the above-mentioned roll milling wheel that no matter uses pinwheel, wire wheel, electroplated diamond wheel, mechanical die mould (tooling) processing wheel or surperficial laser engraving.
Have a plurality of interstitial structures on the release base material that makes by the spreading procedure for processing, the interstitial structure shape can be various geometries gaps.And can make to be had required involution and airing function characteristic and structural design on the film of spreading (stabbed film) by actual demand, wherein can obtain a best of breed with cooperating different roll milling wheel, spreading mechanism and condition by selecting suitable material.The gap area of setting of the present invention can have different distribution design according to the actual requirements, for example can be comprehensive distribution, regional area distribution, systematicness distribution or scrambling distributes, as for actual using time and involution application device, then to decide according to factors such as the material of processed base material film, processing conditions.
Have after the spreading processing on the base material film in a plurality of gaps and need the coating mould release, be convenient coating processing of using mould release in the different coating manufacturing process, can cover shape one barrier blank medium 8 (as shown in Figure 6) carrying out a low extensibility material or the mechanical strength material a little less than than former film substrate at least one outer surface on the film substrate that after spreading processing, have a plurality of gaps in the practical operation, this cladding material can cover at least one outer surface of base material by different processing methods, preparation method can adopt pointing coating (sealant coating), thin-film material is fitted (lamination) or PUR drenches methods such as film coating, has formation one spacer dielectric layer 8 on the base material film in a plurality of gaps.
Have the base material film in a plurality of gaps after the spreading processing or be coated with on the composite membrane of a spacer dielectric layer 8, carry out the manufacturing process of mould release coating at least one outer surface.In fact, mold release agent solution has solvent-borne type, water-based and no-solvent type, coating process commonly used has single or many roller coating, intaglio printing (Gravure), line rod (Mayer bar), scraper (coma coater), impregnation (dipping), surperficial coating technique such as spraying (spray coating) is handled, the drying of coating back solvent and the curing of mould release film forming are built bridge and are reacted and can carry out back chemistry bridge formation reaction (chemical post curing reaction) engineering by heating high temperature (thermal) or radioactive ray (radiation), the former heats by high temperature and comes contained solvent or moisture content in dry out solvent type mold release agent solution and the water-based emulsion, and the chemical reaction of building bridge simultaneously; The latter by ultraviolet ray (ultraviolet radiation, UV) or electron beam (electron beam EB) will be coated on the reaction of directly building bridge of no-solvent type mold release agent solution on the base material film, and form the release rete of a low-surface-energy.Wherein the latter is because the needs of the no high temperature drying solvent in coating back, and the bridge formation chemical time is extremely short, be fit to very much heat and the temperature manufacturing process of the release film substrate of plastics of responsive (thermal sensitive), for example will be coated on the single face of above-mentioned base material film or the two sides as the base material mould release, after the reaction of building bridge, make the mould release membrance that a single or double has release than the twin shaft extensibility polypropylene screen (BOPP) of low melting point characteristic.
In the mould release coating process, base material film is before the coating mould release, often through a surface treatment process, to improve the intensity that mould release adheres to, surface treatment method commonly used has corona discharge processing (corona discharge), flame combustion is handled (Flame treatment), and electricity slurry discharge (plasma discharge), primer coating (primercoating), etching methods such as (etching) are wherein comparatively generally used with corona discharge processing (corona discharge).
Following conjunction with figs. explanation concrete steps of the present invention.As shown in Figure 1 and Figure 2, be the procedure of processing of first kind of preparation method of the present invention, it comprises:
A, monofilm or composite membrane are processed press nips to have the prominent shape structure of plural number point, produce the base material film of a plurality of microcosmic interstitial structures.As shown in Figure 2, as the monofilm 1 of base material film or composite membrane 2 spreading process, make monofilm 1 or composite membrane 2 in the entire area of default base material film or subregion, form a plurality of gaps (gap) 4 through a pair of press nips 3.
Carry out coating engineering in mold release agent solution surface on the single side of b, the monofilm with a plurality of microcosmic interstitial structures 1 that again spreading is machined or composite membrane 2 or the upper and lower two sides, as shown in Figure 2, promptly on the single side of monofilm 1 with a plurality of microcosmic interstitial structures or composite membrane 2 or upper and lower two sides, be coated with one deck mould release 5.
C, afterwards carries out drying, curing and film formation reaction to single side or the monofilm or the composite membrane that are coated with mold release agent solution up and down on the two sides, makes a release base material film with easy-to-rupture at last.Promptly to the monofilm 1 that is coated with single face mould release 5 or two- sided mould release 5 or 2 of composite membranes are dried or chemistry is built bridge reaction.After general emulsification water-based and the coating of solvent-borne type mold release agent solution, can adopt the traditional drying case with the circulating air drying, air-flotation type (air floating) drying system is newer processing procedure, another solvent-free mold release agent solution coating is used and is then adopted radioactive ray, as ultraviolet irradiation or electron beam irradiation reaction (ultraviolet or electron beam reaction), carry out the film-forming of mould release 5,, finish a release base material 6 with easy tear fracture characteristics with definite complete reaction and oven dry.
Certainly, the geometry of various protrusions can be line segment type in the prominent spreading mechanism of the selected point of the present invention, pyramid type, pyramid, the four directions is tapered, the polyhedral angle taper, cross column type or other pattern, after the spreading procedure for processing, also can have corresponding line segment type on most interstitial structures before reverting back to false plane, pyramid type, pyramid, the four directions is tapered, the polyhedral angle taper, the corresponding clearance type shape of cross column type gap shape or other pattern, after spreading, because the memory effect of viscoplasticity (viscoelasticity) material itself, the structural macroscopic structure of base material film, the outward appearance macroscopic structure on most of plane will be recovered, leaving gap material structure, for example different shape slight crack or the gap that is produced through the spreading step.
The preparation method of second kind of mould release membrance provided by the present invention, as shown in Figure 3, Figure 4, its procedure of processing comprises:
The single outer surface side of a, monofilm or composite membrane or carry out mold release agent solution surface coating engineering up and down on the two sides.Promptly as shown in Figure 2, on monofilm 1 or composite membrane 2 base materials, carry out mould release 5 coatings of simple layer face, or carry out 5 coatings of the two-sided mould release in upper and lower orientation.
B, monofilm or composite membrane that above-mentioned single or double mold release agent solution is coated with after processing carry out drying, curing and film formation reaction, temporarily obtain a release base material film.Can will be coated with the monofilm 1 of single face mould release 5 or two-sided mould release 5 or compound tunic 2 is dried or chemistry is built bridge reaction, after general emulsification water-based and the coating of solvent-borne type mold release agent solution, can adopt the traditional drying case with the circulating air drying, air-flotation type (air floating) drying box is newer preparation method.In addition, if coating is solvent-free mold release agent solution, then adopt the radioactive ray chemical reaction of building bridge, as ultraviolet irradiation or electron beam irradiation reaction (ultraviolet or electron beam reaction), really cut full response and oven dry to carry out mould release 5, and finish a manufacturing with release base material 7 of easy tear fracture characteristic.
C, press nips is processed above-mentioned monofilm or composite membrane with release, produce a plurality of microcosmic interstitial structures, make a release base material film with easy-to-rupture at last to have the prominent shape structure of plural number point.Promptly there are the monofilm 1 of single face mould release 5 or two-sided mould release 5 or compound tunic 2 press nips 3 to be processed with spreading to the top layer mask of finishing oven dry, make monofilm 1 or compound tunic 2 in the entire area of default base material film or subregion, form a plurality of gaps (gap) 4, according to this, finish a release base material 7 with easy tear fracture characteristic.
The preparation method of the third mould release membrance provided by the present invention, as Fig. 5, shown in Figure 6, its procedure of processing comprises:
A, at first with monofilm or composite membrane to have the prominent shape structure of plural number point press nips is processed, produce base material film with a plurality of microcosmic interstitial structures.As shown in Figure 6, earlier monofilm 1 or composite membrane 2 base materials are processed press nips 3 with a spreading, made monofilm 1 or compound tunic 2 in default entire area or subregion, form a plurality of gaps (gap) 4.
B, in the single side of monofilm after the processing or composite membrane or carry out the coating engineering of another joint filling blank medium material layer up and down on the two sides with a plurality of microcosmic interstitial structures.As shown in Figure 6, on monofilm 1 that is formed with a plurality of gaps or compound tunic 2, carry out the two-sided coating processing and making process that carries out joint filling blank medium material layer 8 in single side aspect or upper and lower orientation, with conveniently follow-up mold release agent solution coating and dry manufacturing engineering, the material selection of joint filling blank medium material layer 8 has with the coating machining manufacture:
(I) applying (laminating) another plastic material can be selected the more weak material of a mechanical strength for use, extrudes macromolecule membranes such as film altogether as low extensibility polyethylene, polypropylene screen (PE or PP films), PE/PP multilayer.
(II) be coated with another pointing, can select for use organic, inorganic, the preparation of oxide or mixing formula material and solution as underfill materials solution, material composition can be that high molecular polymer (polymeric materials) is as the acryl resin, the styrene butadiene co-polymer, polyvinyl acetate, the derivative of starch matter starch-containing (starch and amyloid materials) with it, agar (agar), gelatin (gelatin), wax, aliphatic acid and its derivative (fatty acid and its derivatives), interfacial agent (surfactant) etc., gap filler solution can adopt intaglio plate (gravure), line rod (mayer bar), scraper, impregnation (dipping), roller (roller), air knife different coating processes and dry manufacturing process such as (air knife) make blank medium material layer 8.
(III) heat is melted another hot melt adhesive material of coating, can select the material that generally can hot melt for use, polyethylene as the plastic macromolecule material, polypropylene, hot melt adhesive, polyvinyl acetate, wax or above-mentioned material mix used, preferably a macromolecular material heat being melted the pouring film is coated on the spreading processing plastic film, hot melt adhesive needs sticked together coating layer (tie layer anchor coating) by spreading processing plastic film coating one deck primer before drenching the film coating, to strengthen the tack strength of two interlayers, corona (corona) surface treatment end before the coating according to actual needs, primer sticks together the smears one-pack-type or two liquid types, two liquid types commonly used such as the product T-150/T-122 ethyl acetate solution of Cao Da Co., Ltd. are applicable to polyester film (polyester, PET), extensibility polypropylene (OPP), anti-dragon thin-film material surface upgradings such as (nylon), with coating of 150 order intaglio process brush wheels and online hot melt adhesive such as the polyethylene of carrying out in dry back, 40 ℃ of bridge formation maturation reactions of 1 to 3 day are down carried out in the pouring film coating of materials such as polyvinyl acetate subsequently.
C, again to having a plurality of microcosmic interstitial structures with the single side of outermost or carry out mold release agent solution coating processing on the two sides up and down with the monofilm of joint filling blank medium material layer or composite membrane.As shown in Figure 6, the default single or double mould release 9 of coating in conjunction with the surface of the monofilm 1 of coating single or double blank medium 8 or compound tunic 2.
D, the composite membrane mould release membrance that above-mentioned single or double mold release agent solution is coated with after processing carry out drying, curing and film formation reaction, make one at last and have the release base material film of easy-to-rupture.As shown in Figure 6, will be coated with the monofilm 1 of single face mould release 9 or two-sided mould release 9 or compound tunic 2 is dried or chemistry is built bridge reaction.After general emulsification water-based and the coating of solvent-borne type mold release agent solution, can adopt the traditional drying case to carry out the circulating air drying, also have newer air-flotation type (air floating) drying system available now.In addition, if coating is solvent-free mold release agent solution, then adopt the radioactive ray chemical reaction of building bridge, as ultraviolet irradiation or electron beam irradiation reaction (ultraviolet or electron beam reaction), carrying out the film forming curing reaction and the oven dry of mould release 9, and finish one and have the manufacture process of the release base material 10 of easy tear fracture characteristics.
The mould release membrance base material that can use in the present invention has:
1, polyester film (polyethylene terephthalate, PET).
2, twin shaft extend poly-two alkene films (biaxially oriented polypropylene, BOPP).
3, density polyethylene film with high (high density polyethylene, HDPE).
4, low density polyethylene films (low density polyethylene, LDPE).
5, extrude polyalkenes film (coextruded polyolefin film) altogether.
6, polystyrene (polystyrene, PS).
7, polypropylene or polyethylene synthetic paper.
Other more special high temperature resistant as having, anti-solvent, the mould release membrance base material of characteristics such as acid and alkali-resistance has: polyethylene glycol is to naphthalate (polyethylene naphthalate, PEN), polyether-ketone (poly ether etherketone, PEEK), Merlon (polycarbonate, PC), pi (polyimide, PI), polysulfones (polysulfone), polypropylene cyanogen (polyacrylonitrile, PAN), styrene-acrylonitrile copolymer cyanogen co-polymer (styreneacrylonitrile, SAN), Polyurethane (polyurethane, PU), nylon (nylon), multilayer extrudes stretched PTFE film altogether, multilayer complex films, inorganic matter adds plastic foil etc.
The present invention design have easy tear fracture characteristics and crack edge does not produce the mould release membrance that chip drops, it has following advantage:
When 1, tearing, cutoff edge is agile clean, does not have the problem of drop chip or fiber, and the utmost point is suitable for the application of electronics industry or hospital's dustfree environment.As the mould release membrance that is used in combination with easy tear fracture two-sided tape, the release liners that tradition is used can be replaced fully and do not had a problem that fiber fragment drops, and to natural paper shortage of resources, rely on the country of the very high import paper of cost, the mould release membrance that utilizes the present invention to make then be can yet be regarded as provides the replacement scheme that a cost is lower and supply is sufficient.
2, in the mould release membrance manufacturing process, thickness (thicknees) is easy to control and very even.
3, mould release membrance dimensional thickness and length stability are all good, have overcome mould release membrance preferably and have been subjected to environment temperature and humidity effect and the problem of buckling deformation, do not have general release liners influenced by ambient humidity and are out of shape the consume that perk causes fracture.
4, flatness is good, and very easily processing.
5, cutting property splendid (Die Cuttability).
6, cost is low, does not destroy ecology, and the renewable recovery of environment-friendly materials itself is used.
7, the material heatproof can select the flexible application scope wide.
The mould release (Release Agent) that is coated on above-mentioned monofilm or compound tunic surface used in the present invention has following kind, according to the user requirement of off-type force height is decided:
1, the sharp health mould release (silicone Releage agent) of silicon is the separated type material of main structure with (gather) siloxanes, generally provides a mould release membrance sur-face peeling power to peel off (medium release) off-type force by minimum peeling off (prime release) in extremely.
2, the sharp health mould release (nonsilicone Release agent) of non-silicon.
A, the wrong ionic mould release (Chromium Complexes) of chromium, the wrong ionic compound (Fluorochemical chromium complex) of for example fluorine-containing chromium.
B, the crystallinity of signing an undertaking draw money on credit chain macromolecule (Long Side chain Polymer), for example polyvinyl eight carbon alkyl acryl co-polymers (Polyvinyl Octadecyl carbamates acrylate copolymer).
C, low back of the body adhesion fluorochemical (Fluorochemical Low adhesion Backside).For example has side chain fluoro containing polymers compound (fluorochemical side chain Polymer).
3, the sharp health mould release (Organo-modified silicones) of organic upgrading silicon.
4, heat is melted additive (melt additives) mould release.
Wherein, the various off-type forces that mould release manifested that are coated on the release base material then are divided into:
(1) gently peels off (prime release) power.Peeling force is 5～15g/in.
(2) peel off (medium release) power or upgrading off-type force (Modified Release Systen) in.Peeling force is between between 15～150g/in.General two-sided tape needs the two-sided release base material of usage variance off-type force, and promptly need there be the mould release coating processing of different release peeling forces mould release membrance two sides.
(3) heavily peel off (high release), peeling force is between between 120g/in～500g/in.
Carry out the then Main Ingredients and Appearance prescription of the different mould releases of foundation of dry and bridge formation chemical reaction mode for being coated on mould release on the release base material in addition, select for use different platinum (platium), rhodium (rhodium) or tin (tin) catalyst system capable different with different heating initial action mode and have:
(1) condensation reaction (condensation reaction), the solution type of service can be solvent-borne type or aqueous emulsifying type.
(2) addition reaction (addition reaction), the solution type of service can be solvent-borne type, aqueous emulsifying type or no-solvent type.
(3) radioactive ray reactions (Radiation reaction), ultraviolet light and electron beam (ultraviolet and electronbeam) are more common radiation source, the solution type of service mostly is no-solvent type greatly, and initial action mechanism then is divided into: free radical initial action type (free radical initiated reaction), cationoid reaction type (cationic reaction), alkene-mercaptan (ene-thiol), cation and free radical hybrid reaction type modes such as (hybrid reaction).
There are the sharp health mould release of silicon of each serial mould release of Syl-Off of DOW CORNING (Dow corning), the sharp health mould release (GEsilicones) of unusual silicon, Shin-Etsu Chemial Co., Ltd (Shin-Etsu), China's gram sharp health mould release of silicon (Wacker Silicones) etc. in the sharp health mold release agent solution of the various aqueous emulsifying type that provides on the market, solvent-borne type and no-solvent type silicon key vendor.
The coating method of mould release membrance of the present invention then adopts different coating processes according to the type of service of the mold release agent solution that uses with the viscosity size in addition, is described below respectively:
(1) solvent-borne type solution: intaglio plate directly is coated with (Direct Gravure), scraper (Coma Coater), impregnation (dipping) and line rod (Meyer Bar).
(2) aqueous solution: intaglio plate, scraper, impregnation (dipping), air-blade type (Air Knife) and line rod (Meyer Bar).
(3) solvent-free solution: five take turns coating (5 Roll Coater), skew formula intaglio plate coating (Offset GravureCoater).
First embodiment:
Take KBOPP/AC/PE and drench film and KPET/AC/PE pouring film two mould release membrance base materials, the sharp health mould release of solvent-borne type silicon KS-3703/KS-3800 toluene with Shin-Etsu Chemial Co., Ltd (Shin-Etsu) is solvent, to add 2%CAT-PL-50T platinum type catalyst behind 3: 1 the ratio mixing, the PE that respectively the mould release toluene solution for preparing is coated on above-mentioned mould release membrance base material with No. 8 line rods drenches face, on KBOPP and the KPET face, coated face is the sided corona treatment face, and solidify drying condition as mould release with 100 ℃ of dryings of heated-air circulation oven 1 minute, the amount of being coated with of silicon Li Kang is 0.8 gram/Mi Pingfang, being placed on relative humidity is 60%, temperature be 25 ℃ environment next day after, be fitted on the mould release coated face with the wide Tesa7475 adhesive tape of an inch, utilize two-sided tape that the non-mould release coated face of mould release membrance is pasted on stainless steel substrates, and with the rubber wheel of 2 kilogram weights toward covering roll extrusion 2 times, then 70 ℃ * 20 grams/square metre the condition that overlays under, respectively 0, measure peeling force after 1 and 7 day, with omnipotent tensile test machine with 180 ° peel angle and 12 inch/minute peeling rate, write down the size of its peeling force (gram/inch), in addition with 180 ° tear off angle and 12 inch/minute peeling rate tear from a lateral edges constant speed of mould release membrance, note down the size that it tears off power (gram/inch), result such as following table.
[table one] different mould release membrance base materials use the peeling force of mould release membrance under different condition that solvent-borne type silicon Li Kang makes and tear off power [gram/inch] size
KBOPP/AC/PE drenches film and represents 25 μ m spreading biaxial stretched polypropylene film/5 μ m AC to stick together coating layer/25 μ m molten polyethylenes pouring film.
KPET/AC/PE drenches film and represents 25 μ m spreading twin shafts extension polyester film/5 μ m AC to stick together coating layer/25 μ m molten polyethylenes pouring film.
Coating (Anchor Coating) is sticked together in the AC representative
Second embodiment:
Take KBOPP/AC/PE and drench film and KPET/AC/PE pouring film two mould release membrance base materials, adopt the sharp health mold release agent solution of low temperature bridge formation solvent-borne type silicon of Shin-Etsu Chemial Co., Ltd (Shin-Etsu), with KS-847T is host, toluene is solvent, add 2%CAT-PL-50T platinum type catalyst behind the mixing, the PE that respectively the mould release toluene solution for preparing is coated on above-mentioned mould release membrance base material with No. 8 line rods drenches face, on KBOPP and the KPET face, coated face is the sided corona treatment face, and 1 minute be that mould release solidifies drying condition with 90 ℃ of dryings of heated-air circulation oven, the silicon Li Kang amount of being coated with is 0.7 gram/Mi Pingfang, being placed on relative humidity is 60%, temperature be 25 ℃ environment next day after, be fitted on the mould release coated face with the wide Tesa7475 adhesive tape of an inch, utilize two-sided tape that the non-mould release coated face of mould release membrance is pasted on stainless steel substrates, and with the rubber wheel of 2 kilogram weights toward covering roll extrusion 2 times, then 70 ℃ * 20 grams/square metre the condition that overlays under, respectively 0, measure peeling force after 1 and 7 day, with omnipotent tensile test machine with 180 ° peel angle and 12 inch/minute peeling rate, write down the size of its peeling force (gram/inch), in addition with 180 ° tear off angle and 12 inch/minute peeling rate tear from mould release membrance one lateral edges constant speed, note down the size that it tears off power (gram/inch), result such as following table.
[table two] different mould release membrance base materials use the peeling force of the sharp health mould release membrance of low temperature bridge formation response type silicon under different condition and tear off power [gram/inch] size
KBOPP/AC/PE drenches film and represents 25 μ m spreading biaxial stretched polypropylene film/5 μ m AC to stick together coating layer/25 μ m molten polyethylenes pouring film.
KPET/AC/PE drenches film and represents 25 μ m spreading twin shafts extension polyester film/5 μ m AC to stick together coating layer/25 μ m molten polyethylenes pouring film.
Coating (Anchor Coating) is sticked together in the AC representative
The 3rd embodiment:
Take KBOPP/AC/PE and drench film and KPET/AC/PE pouring film two mould release membrance base materials, with percentage by weight 1% polyvinyl eight carbon alkyl polymers (Polyvinyl Octadecyl Carbamate, the Peeloil of Ipposha Oil Ind Co., Ltd. 1010) non-silicon Li Kang is from toluene solution, with 150 order intaglio printings coating, 0.07 gram/Mi Pingfang, the PE that is coated on above-mentioned mould release membrance base material drenches face, on KBOPP and the KPET face, coated face is the sided corona treatment face, and it is following dry 1 minute at 100 ℃ with heated-air circulation oven, being placed on relative humidity is 60%, temperature be 25 ℃ environment next day after, paste on the mould release coated face of each mould release membrance with Tesa7475 acryl test tape and WQ4012 rubber adhesive tape that an inch is wide, according to the PSTC-6 method of testing, with the peel angle of general-purpose tensile test machine with 180 °, respectively with its peeling force of release of tensile test (Release force) of the peeling rate of 0.3 meter/minute and 50 meters/minute, and the size of its peeling force (gram/inch) under the record different temperatures, the result is as follows.
[table three] PE drenches the release coating of film/AC/KBOPP/, behind applying acryl and the rubber adhesive tape under different peeling rates its peeling force of survey
| Peeling rate | Test tape | Peeling force [gram/inch] | ||
| 25℃ | 40℃ | 50℃ | ||
| 0.3m/min | Tesa7475 | 18 | 20 | 22 |
| WQ4012 | 105 | 124 | 155 | |
| 50m/min | Tesa7475 | 31 | 35 | 38 |
| WQ4012 | 250 | 295 | 329 | |
[table four] PE drenches the release coating of film/AC/KPET/, behind applying acryl and the rubber adhesive tape under different peeling rates its peeling force of survey
| Peeling rate | Test tape | Peeling force [gram/inch] | ||
| 25℃ | 40℃ | 50℃ | ||
| 0.3m/min | Tesa7475 | 29 | 33 | 47 |
| WQ4012 | 195 | 229 | 297 | |
| 50m/min | Tesa7475 | 48 | 54 | 60 |
| WQ4012 | 371 | 439 | 566 | |
[table five] KBOPP/AC/PE drenches film/release coating, surveys its peeling force behind applying acryl and the rubber adhesive tape under different peeling rates
| Peeling rate | Test tape | Peeling force [gram/inch] | ||
| 25℃ | 40℃ | 50℃ | ||
| 0.3m/min | Tesa7475 | 17 | 18 | 20 |
| WQ4012 | 95 | 112 | 129 | |
| 50m/min | Tesa7475 | 31 | 32 | 39 |
| WQ4012 | 206 | 219 | 307 | |
From the above, the invention has the advantages that mould release membrance of the present invention selects for use the plastic foil of high strength, deep drawing quality to work as base material, therefore have high-strength structure, easy fracture not in processing and making process.Combine with various adhesive tapes, label or paster when using, then have as the easy-to-rupture as the paper.Therefore, the enough intensity of the present invention is not torn the problem that back chip fiber drops but do not exist sensitive paper to open, and is highly suitable for the operating environment of dustless and clean demanding product operation of degree or assembling.
Another advantage of the present invention is in mould release membrance manufacturing process, utilizing the spreading technology to carry out easy-to-rupture processing handles, and by spreading density and spreading number of times in the control manufacturing process, selecting for use of mould release material and the base material film material of arranging in pairs or groups again, but make mould release membrance of the present invention in the design of the different off-type forces of needs, have the modulation elasticity of height.
In sum; the present invention has solved mould release membrance simultaneously and has torn drop adjustability two problems with different off-type forces of back chip fiber; the invention provides a plastic basis material mould release membrance with easy-to-rupture; mould release is coated on this easy-to-rupture base material single face or the two sides; make its become a single or double have release from the property film; the single face mould release membrance can be used in conjunction with the protection that is applied to from glutinous label or paster viscose face, and two-sided mould release membrance then can be in conjunction with the application of jelly-roll type (roll stock) or individual stacking-type (sheet stack) of tearable property two-sided tape.Utilize the prepared easy-to-rupture mould release membrance of the present invention, except the characteristics that have easy-to-rupture, do not fall to consider to be worth doing, outside can using for dustless clearing room, also can replace the high application that is difficult for the release liners of recovery of manufacturing cost under the general environment for use, reduce because of the paper wood demand of using release liners to cause, the pressure that destroys environment.The present invention also has many other advantages in addition, for example the size of the thickness of mould release membrance and length changes, and outward appearance influenced by ambient temperature and humidity less, do not have the paper base material release liners easily to cause the defective of warpage because of dry environment, help reducing the bad consume in the manufacture process.In addition in country for the shortage paper raw material, the acquisition mode that easily tears plastics mould release membrance raw material used in the present invention, lack than from forest, obtaining the suffered restriction of the raw-material natural resources of paper, and provide a kind of more much lower than release liners cost, and the application chance of higher more stable another the release base material substitution material of quality, not only environmental protection but also can reduce breakdown pressure to forest plants in the felling natural environment, this measure provides a utmost point that substituting product and technology are arranged for lacking the area of natural forest resource.Moreover, mould release membrance coating mould release institute must the coating computer hardware can use original release liners to be coated with the equipment of mould release, and, because the mould release membrance base material has thickness distribution than the uniform characteristic of paper, and the mechanical strength of material itself is also high, make manufacturing speed significantly to improve and qualification rate (yield) height, production cost also significantly reduces naturally.
Understand as the person skilled in the art, the above only is preferred embodiment of the present invention, be not in order to limiting claim of the present invention, all other do not break away from the equivalence of being finished under the disclosed spirit and changes or modify, and all should be included in the claim of the present invention.
Claims (13)
1, a kind of preparation method of mould release membrance is characterized in that including following procedure of processing:
A, there is the press nips of the prominent shape structure of plural number point that rete is carried out spreading on monofilm or compound tunic apparatus, obtains a film substrate with a plurality of gaps;
B, the monofilm of again spreading being finished or compound tunic carry out the mould release coating of at least one outer surface;
C, afterwards to the dried or cured film formation reaction that the monofilm that is coated with the coating of single face mould release or two-sided mould release or compound tunic carry out release coating layer, makes a mould release membrance with easy tear fracture characteristics.
2, the preparation method of mould release membrance as claimed in claim 1 is characterized in that: the monofilm of described mould release membrance or the material of compound tunic are selected from biaxial stretched polypropylene, the poly terephthalic acid diethylester, polyethylene glycol is to naphthalate, polyether-ketone, Merlon, polysulfones, pi, polypropylene cyanogen, styrene-acrylonitrile copolymer cyanogen co-polymer, Polyurethane, nylon, polyethylene, polypropylene, polyamide, the ethylene styrene co-polymer, ring-type alkene co-polymer, polyvinyl alcohol, ethylene-ethyl acetate, styrene-acrylonitrile copolymer cyanogen co-polymer, Polyurethane, the ion macromolecular material, a synthetic paper or a group that forms by above combination of materials.
3, the preparation method of mould release membrance as claimed in claim 1 is characterized in that: the mould release material of described mould release membrance is selected from silicon Li Kang, the sharp health derivative of silicon or the sharp health mould release of non-silicon.
4, the preparation method of mould release membrance as claimed in claim 3 is characterized in that: the group that the sharp health mould release of the non-silicon of described mould release membrance is selected from fluorochemical, the crystallinity of signing an undertaking is drawn money on credit the chain macromolecule, the wrong ionic mould release of chromium and above-mentioned derivative are formed.
5, a kind of preparation method of mould release membrance is characterized in that including following procedure of processing:
A, carry out the mould release coating at monofilm or at least one outer surface of compound tunic;
B, will be coated with the monofilm of single face mould release or two-sided mould release or the dried or cured film formation reaction that compound tunic carries out release coating layer again;
C, then monofilm with single face mould release or two-sided mould release or compound tunic to finishing dried or cured film formation reaction, with press nips rete is carried out spreading with the prominent shape structure of plural number point, acquisition one has the film substrate in a plurality of gaps, makes a mould release membrance with easy tear fracture characteristics.
6, the preparation method of mould release membrance as claimed in claim 5 is characterized in that: the monofilm of described mould release membrance or the material of compound tunic are selected from biaxial stretched polypropylene, the poly terephthalic acid diethylester, polyethylene glycol is to naphthalate, polyether-ketone, Merlon, polysulfones, pi, polypropylene cyanogen, styrene-acrylonitrile copolymer cyanogen co-polymer, Polyurethane, nylon, polyethylene, polypropylene, polyamide, the ethylene styrene co-polymer, ring-type alkene co-polymer, polyvinyl alcohol, ethylene-ethyl acetate, styrene-acrylonitrile copolymer cyanogen co-polymer, Polyurethane, the ion macromolecular material, a synthetic paper or a group that forms by above combination of materials.
7, the preparation method of mould release membrance as claimed in claim 5 is characterized in that: the mould release material of described mould release membrance is selected from silicon Li Kang, the sharp health derivative of silicon or the sharp health mould release of non-silicon.
8, a kind of preparation method of mould release membrance is characterized in that including following procedure of processing:
A, there is the press nips of the prominent shape structure of plural number point that rete is carried out spreading on monofilm or compound tunic apparatus, makes a film substrate with a plurality of gaps;
B, at described at least one surperficial coating one blank medium of film substrate with a plurality of gaps;
C, at least one outer surface that more at least one surface with a plurality of gaps is combined with the monofilm of blank medium or compound tunic carry out single face mould release or the coating of two-sided mould release;
D, with the described monofilm of single face mould release or two-sided mould release or the dried or cured film formation reaction that compound tunic carries out the mould release coating layer of being coated with, make mould release membrance with easy tear fracture characteristics.
9, the preparation method of mould release membrance as claimed in claim 8 is characterized in that: the monofilm of described mould release membrance or the material of compound tunic are selected from biaxial stretched polypropylene, the poly terephthalic acid diethylester, polyethylene glycol is to naphthalate, polyether-ketone, Merlon, polysulfones, pi, polypropylene cyanogen, styrene-acrylonitrile copolymer cyanogen co-polymer, Polyurethane, nylon, polyethylene, polypropylene, polyamide, the ethylene styrene co-polymer, ring-type alkene co-polymer, polyvinyl alcohol, ethylene-ethyl acetate, styrene-acrylonitrile copolymer cyanogen co-polymer, Polyurethane, the ion macromolecular material, a synthetic paper or a group that forms by above combination of materials.
10, the preparation method of mould release membrance as claimed in claim 8 is characterized in that: the mould release material of described mould release membrance is selected from silicon Li Kang, the sharp health derivative of silicon or the sharp health mould release of non-silicon.
11, the preparation method of mould release membrance as claimed in claim 8, it is characterized in that: the material of described blank medium is selected from acryl, polyesters, polyethylene, polypropylene, polyamide, polyethylene polypropylene co-polymer, the ethylene styrene co-polymer, ring-type alkene co-polymer, nylon, polyvinyl alcohol, ethylene-ethyl acetate, the ion macromolecular material, epoxy resin, Merlon, polysulfones, polypropylene cyanogen, styrene-acrylonitrile copolymer cyanogen co-polymer, the styrene butadiene co-polymer, PUR, Polyurethane, synthetic paper, or by above combination of materials one have the group that low extensibility material is formed.
12, the preparation method of mould release membrance as claimed in claim 8, it is characterized in that: the material of described blank medium is selected from derivative, agar, gelatin, wax, aliphatic acid and its derivative, the interfacial agent of starch matter starch-containing with it, or by above combination of materials one have the group that low extensibility material is formed.
13, the preparation method of mould release membrance as claimed in claim 8 is characterized in that: the coating method of described blank medium is selected from the group that applying, solution coat and drying, hot melt adhesive coating etc. are formed.
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| CN109627876A (en) * | 2018-12-05 | 2019-04-16 | 香洋新材料（江苏）有限公司 | A kind of thermal transfer mould release and preparation method thereof for digital printing |
| CN109439229A (en) * | 2018-12-28 | 2019-03-08 | 大连大富塑料彩印有限公司 | A kind of Novel release film |
| CN113088059A (en) * | 2021-03-29 | 2021-07-09 | 浙江汉丞新能源有限公司 | Special release film without release agent |
| CN113113650A (en) * | 2021-03-29 | 2021-07-13 | 浙江汉丞新能源有限公司 | Special high-enhancement composite membrane containing fluorine proton or ion exchange membrane |
| CN113113650B (en) * | 2021-03-29 | 2022-07-15 | 浙江汉丞新能源有限公司 | High-enhancement composite membrane containing fluorine proton or ion exchange membrane |
| WO2022206039A1 (en) | 2021-03-29 | 2022-10-06 | 浙江汉丞新能源有限公司 | Composite membrane of special highly-enhanced fluorine-containing proton or ion exchange membrane, composite membrane electrode, special highly-enhanced fluorine-containing chlor-alkali battery membrane, special release membrane, and preparation method therefor |
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