CN101597464B - Adhesive tape and use thereof - Google Patents
Adhesive tape and use thereof Download PDFInfo
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- CN101597464B CN101597464B CN200910145346.XA CN200910145346A CN101597464B CN 101597464 B CN101597464 B CN 101597464B CN 200910145346 A CN200910145346 A CN 200910145346A CN 101597464 B CN101597464 B CN 101597464B
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Abstract
The present invention relates to an adhesive bonding system (K) which joins flat webs when changing rolls of such webs. The present invention also relates to a method for conecting two flat webs during a rolled flat webs carries out roll change with high speed, the method uses the adhesive bonding system. The present invention further comprises a winding drum containing the adhesive tape of the adhesive bonding system.
Description
Technical field
The present invention relates to the adhesive tape for the open width material high speed change of lap (flying roll change) of coiling, also relate to the method for the open width material high speed change of lap of coiling.
Background technology
In the processing of open width material (paper, film, non-woven fabrics etc.), high speed change of lap (high speed is bonding) is needn't stop the common method of the machine of fast turn-around with the volume of the old similar unwinding completely of new volume replacement for this reason.In the process of this high speed change of lap (on-the-fly roll change), conventionally adopt (pressure-sensitive) adhesive tape, to the end of old width is engaged to (or bonding) with the start-up portion of new width.
For many years, known in this respect some adhesive tapes with form of straight lines be adhered to the Xin Juan the superiors above or below, and in a band, merge thus the function of rolling (roll closure) and the function of jointing tape (this adhesive tape engages new open width (being more specifically paper web) and the old open width that is about to use up).
In bonding operation, rolling need to be opened wide so that new open width adheres to the end of the open width that is about to use up, and after bonding operation, with continuous operation mode, new open width is hauled out from new volume (run off).
US 5,323, and 981A discloses a kind of double sticky tape for the bonding highly tacky adhesive of high speed that has outside it.Two kinds of tackiness agents are set at its back side and advantageously between this tackiness agent, have the zone (zone) of adhesive-free.At this cloth, deposit, the rear portion tackiness agent (rearadhesive) with permanent adhesive is combined with the superiors of new volume, and repositionable (repositionable) anterior tackiness agent is combined with the second layer via these the superiors.In this scheme, repositionable tackiness agent plays rolling.In the bonding situation of high speed, the width that is about to use up and the new cigarette above adhesive tape are touched.This repositionable tackiness agent separately, will newly be rolled up and draw in machine from second layer material, by the tackiness agent of the permanent adhesive of adhesive tape end, keep (hold).
WO 95/29115A discloses a kind of similar adhesive tape.This double sticky tape has two kinds of tackiness agents and on bottom surface, has a kind of tackiness agent on end face.
This adhesive tape is fixed on the below of the Xin Juan the superiors.In this layout, a kind of tackiness agent keeps the superiors.The second tackiness agent is responsible for the width that contact is about to use up.Going up is overleaf also repositionable tackiness agent, and it exposes the superiors bonding in the situation that.
Two kinds of adhesive tapes all have common shortcoming.While using them, repositionable tackiness agent opens wide by processing machine (finishing machine), and the possibility of result exists width to cling to depart from the situation of roller (deflection roller) or printing coverture (printing blanket).Thereby this may cause width sheet to tear.
DE 196 28 317 has instructed the remedial measures of this problem.The structure of its adhesive tape and WO95/29115's is similar, but repositionable tackiness agent on the back side replaces with double sticky tape, and this double sticky tape is characterised in that to have peelable (splittable) carrier.When bonding, this carrier is torn, and corresponding relic covers tackiness agent, they is remained noncohesive.This prevents from adhering to Surface Rupture Events by generation in the process of processing machine.
DE 199 02 179 has instructed another remedial measures.In this case, the band of tearing is from forward position indentation.This indentation improves bonding efficiency greatly.
DE 198 41 609 has described a kind of double sticky tape adhesion elements.Its carrier is not by single-part stationery but consists of the paper/paper composite body engaging with cure adhesive point.This adhesive tape be also attached to the superiors below.When bonding, adhesive spots extracts the fiber in one of (extract) this Composite Paper, exposes thus the superiors.
All these products have shortcoming.The complex body of the complex body no matter this peelable system is paper, two layers of paper, paper/film composite, two membranes, or peelable polymer layer, because this peelable system is torn on its whole width simultaneously, it all shows the peak value of power when initially tearing.
When enamelled paper (coated paper) upper (especially on intaglio printing enamelled paper) is used this jointing tape, this peak force (force spike) usually causes adhesive tape to lose efficacy especially.One of reason losing efficacy is that the power of tearing can be higher than the power of anchoring paper and coating, and now coating is separated with paper.Or this tears power in fact higher than the internal intensity of paper, and now paper tears.In two kinds of situations, bonding all unsuccessful.
DE 100 58 956 A1 have instructed a kind of improvement.For fear of peak force, tear band and there is spination design.The direct of travel of the most advanced and sophisticated point operation of sawtooth, therefore, when bonding, the tip of sawtooth starts to tear.Because this most advanced and sophisticated area is little, therefore also reduced power value.
Yet the shortcoming of this system is, almost nil at the most advanced and sophisticated bonded area of sawtooth.Therefore, in most advanced and sophisticated bonding strength, be not enough to guarantee tear at this tip.According to the quality of the paper of wanting to tear, below tip, there is breach, especially in bonding strength, higher than the site of the power of tearing, there is breach.In other words, some of this peelable band are not torn part by printing press or paper deep processing machine, and may cause the situation of pollution.Because the bonding strength of this peelable system is relevant with the type of paper, these sizes of not tearing part are changing, and therefore tear needed power and are also changing.
DE 102005051181 A1 have instructed a kind of improvement.Herein, the peelable band providing is not spination design, but circular at tip.This causes bonded area to increase, and produces all the time enough bonding strengths, thereby has guaranteed reliably to tear.
Yet the nonlinear geometry structural table of this peelable system reveals weakness.When the adhesive tape of feature with this peelable system is from tape roll during unwinding, there is stress in the leading edge (leadingedge) in this peelable system, this stress is present in the direction of crossing unreeling direction, and in some cases, this peelable band starts to tear.In the geometry that waveform or the high slope of take are feature, especially can occur to tear too early.Because this system of tearing forms coherent two dimensional structure,, even may there is tearing completely of the peelable band of waveform in this undesirable longer part that may involve (run over) this peelable system of tearing in some cases.In user does not notice its situation, this is extrahazardous, because adhesiveproperties declines.If user notices initially tearing or tearing completely too early of band that this is peelable, must again use these adhesive tapes, this is consuming time and productivity is had a negative impact.
In addition, this system is only limited to those application that wherein peelable system can be paper.For particularly film produce and processing industry in application for, paper is the material of not wishing use.Here cannot use above-mentioned system.
In addition, the paper of tearing together with its adhesive coating demonstrates the restriction in the diversity of available tackiness agent.Tackiness agent must be because inappropriate viscosity migrates in peelable paper, because this can change the power of tearing in undesirable mode, so cause the fault in application.
Summary of the invention
The object of the invention is by means of realizing for engaging the bonding system of this open width when changing open width volume, described bonding system comprises Liang Tiao adhesive tape circle limit (boundary edge), the advantageously substantially parallel extension and form especially the long limit of adhesive tape of described Liang Tiao adhesive tape circle limit, comprise in addition at least one roof carrier layer and a bottom carrier layer, in addition two carrier layer are interconnected and are applicable to opening the smooth connect elements (flat connecting element) of this connection in the situation that of static or high speed change of lap, and comprise in addition two binder layers, described binder layer is arranged on the surface of each carrier layer away from this connect elements separately, this connect elements is not binder layer, and is not being connected between connect elements and at least one carrier layer to produce by means of other binder layer.For bonding system of the present invention, the fact is that at least one limit, boundary of described connect elements is not the extension (in other words for nonlinear) that is in line, with respect to this boundary's margin boning out, focus on line (emphasis line) (line of direction,principal), the emphatically line on this limit, boundary extends along privileged direction (preferential direction), and this limit, boundary has and is a plurality ofly positioned at its region of focusing on line one side and is a plurality ofly positioned at the region that it focuses on line opposite side.
Preferably described connect elements does not comprise binder layer; Most preferably described adhesive tape does not have binder layer between carrier layer.
Accompanying drawing explanation
Fig. 1-4 show 4 kinds of different embodiments of bonding system of the present invention with side section, wherein adhesive tape of the present invention infinitely extends generation by the standard that vertically enters the bonding system of paper plane especially.
Embodiment
Inviscid in this specification sheets meaning refer to described layer in application when it is destroyed or can not expose any adhesive surface or the surface of being clamminess when separated with its base material.Therefore, although this layer can for example as adhesive substance, use and can under this state, produce and engage connect, yet occur subsequently in these cases dry, even it is also by no longer adhesive or be clamminess when the layer therefore staying exposes.In other words, being present in layer in adhesive tape, that stay for applying is to have noncohesive layer, no matter it still usings other base material as lining with solid support material.On the contrary, even when pressure sensitive adhesive has made two kinds of materials mutually combine, they itself also keep viscosity; Only has the effect (their bond effect) that hinders their external portions by lining.
Therefore, with regard to this specification sheets, constituting layer is noncohesive, and especially under application state, particularly under drying regime, they do not have self-adhesion, in other words inviscid.
For example, when observing each layer (layer of carrier layer, binder layer or formation connect elements), the path on the limit, corresponding boundary of each layer can be as curve interpretation on mathematics.
With regard to this specification sheets, the line that is called the emphatically line (also referred to as line of direction,principal) at edge is the line that the curve of describing respective edges is separated as follows: make to represent straight line that this focuses on line and this curve itself impale these be positioned at the total area in the region of line one side emphatically and formation this focus on the straight line of line and these total areas that are positioned at the region of focusing on line opposite side that this Curves impales identical.
In a kind of outstanding method, at least the line [line of direction,principal] emphatically of Liang Tiao adhesive tape circle limit (adhesive tape long limit) extends in parallel and extends to privileged direction, the line emphatically of the nonlinear edge of privileged direction that is connect elements equally to the direction of extension.
One of the long limit that can arrange connect elements and at least one carrier layer flushes, and especially so that this connect elements is not the mode that the point of the most protruding (projecting furthest forward) is positioned on respective carrier layer edge forward on edge in line, does not arrange.Yet, for the purposes of the present invention in high speed change of lap, very advantageously, arranged in form connect elements with the long limit from least one carrier layer (the advantageously long limit of two carrier layer) certain intervals, this interval is defined as the line of point through connect elements circle limit (this point be located in the direction at respective carrier layer edge farthest) to the distance at one or more edges of one or more carrier layer, or at this one or more carrier layer edge, is that nonlinear situation is given a definition for the distance of line emphatically to them.
This new bonding system solves three above-mentioned problems.
The tape construction of this innovation prevents from tearing band and starts to tear when unwinding.From rolling up, power plane is positioned between the tackiness agent and separating medium (parting medium) of open side during unwinding; Connecting media be take carrier as lining and is not therefore subject to stress, so there is not too early separation in connection plane.
Because solid support material does not need to be made of paper, therefore can provide the goods that do not contain paper.
Because tackiness agent is all coated and can, on the carrier of migration-stable, therefore can be coated with the tackiness agent of any viscosity on two sides.
Very advantageously a kind of following embodiment: connect elements be not be in line the line emphatically at least one limit, boundary that extends and the limit, boundary of at least one carrier layer focus between line, there is interval.
Except application rate, this interval depends on that tear can (on the width of connect elements) and tear the maximum, force in process.By tearing (T-shaped partition (T-block)) using in direction, in other words, especially, perpendicular to line of direction,principal (it under preferred form corresponding to adhesive tape longitudinally) on tear, thereby measure maximum, force and tear energy.
Two standards are here important for respective application.
Tear the maximum value of power and can pass through the kind of polymkeric substance (forming the layer of connect elements) or the glue spread adjusting of this polymkeric substance.Tear and can by the width of connect elements and the design on limit, boundary that will tear, produce in addition.
Using in direction, in other words perpendicular to the line of direction,principal of the non-linear side of connect elements (in other words, especially, perpendicular to adhesive tape longitudinally), measure and tear power value, and the maximum value of tearing power.In this process, in tensile testing machine, with 90 ° of angles, from bottom carrier, peel off roof carrier, connect elements is (" tearing ") separately.Peeling rate is 300mm/min.The initial value (being the tear power value of connect elements while starting separation) of power torn in record, and extension power (split propagation force) torn in same record, and it can measure in the process of tearing on the width of connect elements.Tear and can be able to use the known width of separation system (connect elements) to determine.
Tear power (process of tearing start after the extension power of tearing) can be equally in the direction of the line of direction,principal of connect elements, in other words on the longitudinal direction of adhesive tape, measure especially.The value of upwards stipulating the party is determined by following measurement: in tensile testing machine, with 180 ° of angles, from bottom carrier, peel off roof carrier, connect elements is (" tearing ") separately; The detachment rate is here also 300mm/min.
The in the situation that of more annotations not, when mentioning in the context of the present specification, tear power value and tear can be worth time, numeral is relevant to the measurement of using in direction in all cases.
For the thin material of easily tearing, the maximum value of tearing power advantageously should not surpass 1N/cm, tears and can should be less than 80Nmm.
In the situation that be not easy to so tear compared with thick material, this value can be higher.
About interval, the fact is in application, to tear operation to occur sooner, should be less from the interval in forward position, and therefore although larger interval will promote to tear and can improve and tear efficiency.The impact that exists on the contrary forward position upset risk to increase under high speed.
Connect elements is not that the be in line described interval between line of focusing on line emphatically and at least one carrier stratum boundary limit on the limit, boundary of extending is particularly advantageously 15mm and preferably should be at least 0.3mm at the most.
For using in the velocity range of about about 15m/s of 33m/s-especially, the interval of 0.3mm (advantageously 0.5mm)-2.5mm is desirable.In particular for the speed of about about 9m/s of 15m/s-, interval preferably should be 2.5mm-5mm.Because there is not the excessive risk of above-mentioned forward position upset compared with the cause of lower velocity, therefore selected interval can be larger.
In particular for the speed of about about 5m/s of 9m/s-, interval advantageously should be 5mm-10mm, and particularly, the in the situation that of similar static application, interval preferably should be 10mm-15mm (comprising end value).
Interval does not rely on the width of adhesive tape.
Schematically and not wish unnecessarily to limit concept of the present invention by the embodiment of describing, Fig. 1-4 show 4 kinds of different embodiments of bonding system of the present invention with side section, wherein adhesive tape of the present invention is extended and produced by the standard unlimited (quasi-infinite) that vertically enters the bonding system of paper plane especially.
Fig. 1 shows bonding system K of the present invention, it has the smooth connect elements 1 between 2 carrier layer 2,2 ' (roof carrier layer 2 and bottom carrier layer 2 '), this carrier layer is coating adhesive 3,3 ' separately again, is coated with especially pressure sensitive adhesive (binder layer 3,3 ' is arranged on the surface of each carrier layer 2,2 ' away from connect elements 1 separately).Optionally binder layer 3,3 ' one of at least on can there is lining 4, particularly on the binder layer on roof carrier layer 23 can there is lining 4 in (in order so to describe in the drawings for example), and this lining 4 is advantageously divided into two sections of 4a, 4b by otch 5, perforation.
This bonding system has outer tape circle limit Ka and Kb.Connect elements circle limit 1a, 1b's is not one of at least the extension (being edge 1a in this case) that is in line, and is positioned at some 1c farthest and is described by the back side point 1d farthest that is positioned at connect elements edge in the direction by bonding system edge Ka in Fig. 1.This connect elements edge 1a can for example extend with wave form, and therefore in this case, in Fig. 1, location label 1c will represent " crest " of this waveform, and location label 1d will represent " trough ".
Fig. 2 shows embodiment of the present invention, wherein limit, the boundary 1a of connect elements 1 recessed distances A (about distance A, equally referring to above-mentioned annotation) advantageously.
Embodiment based on exemplary, Fig. 3 describes following possibility: the limit 1b of relative boundary of connect elements 1 can be similarly from the recessed layout of corresponding tape edge Kb, so connect elements 1 during from limit, boundary 1a only the finite part at adhesive tape K extend.
Fig. 4 is in order to show by another embodiment for example, and Second support 2 ' (bottom carrier in figure) can have narrower design, may be for example substantially consistent with the width of connect elements 1.Also can make in this case bottom carrier 2 ' wider than connect elements 1, but than roof carrier 2 narrow (not describing in the drawings).
Owing to successfully tearing the total energy that depends on the process of tearing, the invention provides the advantage that different connect elements width can flush by wave form.In other words, under different tape widths, by waveform geometrical shape, can set equal total energy value and needn't adjust polymkeric substance used or its glue spread.
Limit, described non-directional boundary can be designed to the form of wave line especially, and it can have design even or heterogeneous.This waveform can be symmetrical or asymmetric.Balancing waveform is produced by the limit, boundary periodically with repeated segments especially, for each repeated segments, can limit mirror shaft, and this mirror shaft is arranged perpendicular to the line emphatically of respective edges especially.
The edge of connect elements can be advantageously by similar in DE 10 2,005 051 181 A the described mode in edge for easily openable adhesive tape be shaped.Therefore,, for this invention embodiment, at least one non-rectilinear circle limit of connect elements is so that the mode that it has the convex part that makes round and smoothization of the most protruding point (furthest-projecting point) designs.
In a kind of improvement of this embodiment, non-straight edges has round and smoothization design equally at its most recessed point (furthestrecessed point), preferably make at the curve of these points than significantly sharp-pointed at the curve of protruding point, the bent curvature of a curve at these points is significantly greater than the bent curvature of a curve in protruding point.
Advantageously, under all situations, between the most protruding point and nearest the most recessed point thereof, non-straight edges can be led continuously, preferably has three flex points.
In another favourable embodiment, under all situations, between the most protruding point and nearest the most recessed point thereof, non-straight edges can be led continuously, has a flex point.
A kind of follow-up, in invention in favourable improvement, described non-straight edges consists of a series of semicircles that replace.
In a kind of favourable embodiment of bonding system of the present invention, at least one non-rectilinear circle limit of connect elements, recessed (negative) of each recessed part has the narrower design of protuberance (positive) than adjacent convex part.
At least one non-rectilinear circle limit that will be advantageous that in addition connect elements for instruction of the present invention has two or more groups convex part, and it is protruding in various degree according to regular pattern.
In a kind of favourable embodiment of the peelable bonding system of the present invention, the Liang Tiao circle limit of connect elements is not the extension that is in line, and has especially identical Cycle Length.
In a kind of favourable improvement of the present invention, for the connect elements of bonding system, the fact is its forward position and its rear end extension that is parallel to each other, to such an extent as to no matter the nonlinearity at two connect elements edges how, the width of connect elements is all identical everywhere.
With reference to corresponding geometrical shape described in DE 10 2,005 051 181 A, wherein about the explanation of edge contour, numeral wherein and accompanying drawing etc., be contemplated as falling with in the disclosure of the specification.
Whether relatively axisymmetric perpendicular to the mirror image of the line emphatically at described edge the advantageously improved salient point of the present invention about at least one non-rectilinear circle cincture exterior feature of connect elements is that this edge is not axisymmetric with respect to mirror image, special.
This can advantageously produce by following: the fact is along focusing in the privileged direction of line, for most of convex parts, until the upcurve region of the most protruding point of this convex part does not have this most protruding some downcurve profile afterwards so steep; Therefore for most convex parts, the curve of describing limit, boundary is until the curve in protruding peaked elevated areas than in decline region is subsequently more smooth.The steepness of each segment of curve (also referred to as curve regions) is here thought through the absolute value of slope value of straight line that defines two points of response curve section.Therefore this steepness is corresponding to the absolute value of the mean value of segment of curve first order derivative on mathematics, and this segment of curve can be expressed as the Riemann integration of its first order derivative in this case.
This " crooked " waveform can be especially as the improvement of embodiment and realize, this embodiment is corresponding to the boundary form type that becomes known for the tape edge of DE 10 2,005 051 181 A (referring to above).
The favourable embodiment of connect elements makes the second relative limit, boundary of its Yu Gai non-rectilinear circle limit design with curve form, the curve that this curve negotiating is described the first limit, boundary is along focus on the line parallel displacement of line-and suitable perpendicular to it, along this, focuses on line simultaneous displacement-and produce.
By wherein, with the adhesive tape of the formal construction connect elements of the vertical upwardly extending many zones of discontinuity (multiply interruptedstrip) at connect elements, produce another understanding to the present invention's instruction.At this cloth, deposit each sections (segment) and have one or more convex parts, particularly those have circular convex part at its most protruding point.
Those of bonding system of the present invention and prior art are different, are that especially two connect elements between carrier layer are inviscid and at least engage with one of carrier layer is inviscid.Particularly advantageously bonding system of the present invention has the connect elements that is not to tear by plane paper realization.
Adhesively be arranged in a carrier layer or in the situation that the connect elements of tearing paper between two carrier layer must be set power as the inherent nature of paper for example comprising.Correspondingly be difficult to find the paper that is applicable to this end-use.As proposed in this specification sheets, provide connect elements, obtain following advantage: by the selection of suitable polymer, lamination composition etc., and by the specific shaping of this element, can to the power of tearing obtaining, exert an influence very expediently, and can set best these power for the end-use of imagination.In addition, this connect elements can be manufactured very thinly: however prior art provides at least two binder layers and peelable layer here, and have there the layer of at least one thin polymkeric substance, lamination composition etc. just enough according to the present invention.
Design as follows especially connect elements: under that stress existing, it separates the joint between two carrier layer reliably in high speed change of lap process.Under this meaning, connect elements represents " predetermined breakpoint " under above-mentioned stress.For this reason, optimize the bonding system that comprises carrier layer and connect elements, make especially it effectively be delivered in those power of substantially crossing its longitudinal extent orientation in the plane of bonding system, yet, as for the power on bonding system thickness direction, just in time on the contrary, be in fact desirably under the level of alap power and lost efficacy.Guarantee that this specific character key is affected by the Choice and design of connect elements.
Connect elements can or separatedly with bottom carrier layer separate to will engage with roof carrier layer; Also be attainable, can with two carrier layer separated embodiment all.Described in the latter modification in the situation that, can there is separated with two carrier layer simultaneously, or statistically occur separated, sometimes separated with a carrier layer, sometimes separated with another carrier layer, and not particularly preferably.In addition, what can realize is following embodiment, and in this scheme Central Plains, going up can be separated with two carrier layer, but preferably separated with one of carrier layer.
A kind of form of connect elements has at least two-layer, and the separation of this system is not to occur by carrying out layering from one of two carrier layer, but by this two-layer disconnected from each other generation.In order to improve the layering behavior of a carrier layer, or-tearing the side that operating period can layering-weaken described layering behavior, can between polymer layer and corresponding carrier layer, provide other layer, this layer produces or promotes corresponding effect.The mode that one of carrier layer advantageously can be promoted with the layering that makes polymer layer is carried out pre-treatment or coating, and the mode that another carrier layer can be enhanced by the tackiness that makes polymer layer and this carrier layer is carried out pre-treatment or coating.
Very advantageously only provide very thin layer or thereby flood these one or more carrier layer itself, to make the total thickness of bonding system low as much as possible.
In addition, can design connect elements by following mode: the process that is separated from each other the breaking by connect elements of two carrier layer, or breaking of layer in connect elements and occurring, in other words, does not exist plane to tear (two-dimensional splitting) about this layer.In this case, the resistates of connect elements disrupted beds remains on roof carrier layer and bottom carrier layer simultaneously.
In a kind of favourable embodiment of bonding system of the present invention, connect elements does not represent successive layers.Connect elements can be comprised of a plurality of isolated area elements that are arranged between carrier layer especially.
This layout can be advantageously for example by connect elements is put in a carrier layer and is produced via silk screen printing or by means of the roller of patterning.
This isolated area element can be especially so that the mode that they are relative to each other contactlessly arranged arrange.Geometric construction via this region element, for example via their geometrical shape, their size and/or their arrangements relative to each other, there is outstanding effect, can set two carrier layer required release forces separated from each other (release force).
The feature of the connect elements between two carrier layer is that it is connected with at least one the non-adhesion in two carrier layer, is particularly advantageously all inviscid connection with two carrier layer.By abandoning using binder layer, can make bonding system very thin, for it, the application in high speed change of lap is particularly advantageous for this.
Therefore paper web for example in printing press or paper finisher with at a high speed through very narrow region, such as roller to, roll gap (nips), roller calender (calendar stat) etc.; In Printing industry, finally also they are for example introduced to folding device (folding apparatus).Adhesive tape can be manufactured thinlyyer, and has the enough qualities to bonding relevant requirement, so in automatic operation unintentional tear or the risk of other fault lower.These faults are relevant to sizable cost separately, because equipment must be shut down and startup again afterwards.By adhesive tape of the present invention, these faults have successfully been avoided to a great extent.
Described connect elements can be opened connection under the condition of static or " at a high speed " (especially, automatization) change of lap, therefore has the effect of " predetermined breakpoint ".Owing to there not being binder layer, with regard to producing sepn process, conventionally can separable paper, this paper is that prior art is known.
In a kind of favourable operation, can use the connect elements that comprises polymer layer, this polymer layer can with roof carrier layer or with the layering of bottom carrier layer.Be attainable,, for example, there is not the difficulty relevant to there is layering in the embodiment that wherein polymer layer and top and bottom carrier layer all can layerings aspect equipment yet.
In the simplest form of this embodiment, polymer layer forms described connect elements.
One or more polymer layers of connect elements can be prepared in the following way: for example by printing, the polymkeric substance (for example varnish) that produces polymer layer is applied over to one of carrier layer upper, or suitable words are applied on middle layer (more particularly intermediate function layer).If do not wish applying polymer layer on whole area, for example can adopt silk screen printing significantly.At undried polymers soln or also can place other layer on uncured polymkeric substance at that time also at that time, or can place Second support layer especially for the connect elements being formed by polymer layer, so that the dry and/or curing assembly that produces carrier layer by means of this polymkeric substance.Chemical property, the amount of polymers applying by polymkeric substance, apply form (whole region, subregion, part etc.) selection, the selection of carrier layer materials and solid support material pre-treatment character, can affect in order to make the needed power of components apart, can also affect in addition polymer layer preferentially separated with which carrier layer.
As the polymer layer for bonding system of the present invention, very advantageously can use WO99/46196A, particularly wherein the 9th page of 15-29 capable in those disclosed polymkeric substance.Therefore the polymkeric substance for this polymer layer can advantageously be selected from the multipolymer of polyvinyl chloride, polyvinylidene dichloride, polyvinyl alcohol, polyvinyl acetate, polyvinylpyrrolidone, vinylchlorid and vinyl-acetic ester especially.As for additive, for example can use wetting agent, defoamer, softening agent and/or mycocide.In above-mentioned publication open but also can be highlightedly for a kind of preferred polymers of the present invention, be the polymkeric substance of the Repulpable based on polyvinyl alcohol for example, it preferably further comprises one or more softening agent.The softening agent particularly preferably using is for example, compound, hydroxyl modification rubber or the combination of the two such as polyvalent alcohol (glycol ether).
Polymer layer for connect elements, as thering is another system unusual effect, that can use according to the present invention, manifested be that building becomes known for preparing finishing paint (paintfinish) in HeDIY department, the priming paint of plaster (render), tackiness agent and Land leveling composition, they are the pre-treatment such as plaster material of construction or fiber board for high absorption material especially for example.Here can mention the priming paint based on polyacrylic ester especially.
A kind of commercially available basic priming paint (deep-down primer) that has manifested the one or more polymer layers that are particularly suitable for connect elements is sold with title " Beste Basis " by the Lugato company of Hamburg, Germany.
In another favourable embodiment, as connect elements, can use especially the system obtaining by drying water based composition and use thereof in packaging (water base lamination composition).In the simplest form of this embodiment, lamination composition layer forms described connect elements.
Select in this case this lamination composition so that assembly meets the requirement of bonding operating period, in other words produce the predetermined breakpoint of expectation.
Preferably select lamination composition so that under its dry film form, even at relatively high temperature, they do not have clinging power yet, to such an extent as to the region of exposing after separation assembly can not polluted mechanical part or be produced material.
For the application in papermaking and Printing industry, expectation process recycling is not interrupted.Therefore advantageously select the aqueous composition of lamination composition, wherein can have the conventional auxiliary agent of papermaking.
As aqueous composition, very advantageously can use based on cellulosic system, particularly based on those of methylcellulose gum.This system can be used as wallpaper paste and buys.
Can there is unusual effect and for example be disclosed in EP 1 076 026 A for the particularly advantageous lamination composition of bonding system of the present invention.This lamination composition that can advantageously adopt except binding agent, also comprise have easy demoulding activity not containing organosilyl additive; Can there is plasticizer additives in addition in necessary words.As binding agent, advantageously can use treated starch, or for a long time for the binding agent of wet type adhesive tape.As releasing agent, lamination composition preferably comprises easy demoulding additive, especially stearyl derivative, particularly calcium stearate, talcum and/or with the polymkeric substance of stearyl-.Advantageously can use the dispersion of polymkeric substance releasing agent as releasing agent, for example the stearyl derivative based on methacrylic acid stearyl ester or toxilic acid for example with the dispersion of cinnamic multipolymer.As softening agent, can for example use water-soluble poly dibasic alcohol.Especially, have 10-90wt% binding agent and 10-90wt% releasing agent and at the most the aqueous compositions of 60wt% softening agent can be used as lamination composition.As binding agent, preferably use starch derivative, negatively charged ion yam starch for example, its minute rate is 30-70wt%.Releasing agent used is preferably talcum, calcium stearate and/or has the demoulding active copolymer of stearyl-(release-active copolymer), and its minute rate is 30-80wt%.For plasticising, confirmed that polypropylene glycol or polyoxyethylene glycol are very applicable, preferable amount is 0-15wt%.About this point, mainly using under room temperature is the higher molecular weight products of solid.Other softening agent that the relatively large ratio of can take has good result to be used is as gum arabic and have the plastics that similar performance distributes.Layer thickness after lamination composition dries is preferably 5-20g/m
2.
As the connect elements of bonding system of the present invention, can be equally very effectively the lamination composition described in unpub DE 10 2,008 023 020 still at present that the applicant submits to recently.
That describe therein and can there is equally outstanding effect and comprise at least one binding agent (more particularly polysaccharide fraction) for the laminating adhesive of the bonding system of this specification sheets, and at least one serves as the surface active agent composition of releasing agent especially.This surface active agent composition can be single tensio-active agent or can comprise two or more tensio-active agents.
Laminating adhesive can advantageously comprise other component if desired, comprises especially plasticizer additives (below also referred to as softening agent).In a kind of scheme very preferably, polysaccharide fraction is the derivative of starch, gum arabic or above-claimed cpd.
In addition, binder component can also be for example stearate, more particularly Magnesium Stearate and calcium stearate.The composition of binder component can be also the mixture that uses starch and one or more other binding agents.Starch has obvious advantage as binding agent, and the silk screen printing that lamination composition has is fine.
According to the polysaccharide minute rate of the particularly preferred lamination composition of the present invention, be 98wt% at the most, more preferably at the most 85wt% to 95wt%, 90wt%-95wt% better.Particularly preferably can use starch derivative, especially the hydroxypropyl ether based on yam starch.A kind of such starch for example can be from
company obtains with title Emsol K55.
Surfactant content is very preferably 2wt%-20wt%, better 5wt%-15wt%, ideally 5wt%-10wt%.For this polysaccharide fraction and surface active agent composition, above-mentioned minute rate value all relates to the mixture of tensio-active agent and polysaccharide, is all the form of the amount based on solid part in all cases.In order to prepare lamination composition, there is in addition solvent, water more especially, within its minute, rate is preferably 50wt%-80wt%.In order to prepare laminating adhesive, can be especially by solid surfactant being added in the aqueous solution of polysaccharide fraction 20-40% concentration, be undertaken.
Other additive of operable lamination composition is for example talcum, calcium stearate and/or the demoulding active copolymer with stearyl-, and its minute rate is 30wt%-80wt%.Can especially talcum be used as to filler to adjust silk screen printing.
For plasticising, confirmed that polypropylene glycol or polyoxyethylene glycol are very applicable, preferable amount is 0wt%-15wt%.About this point, mainly using under room temperature is the product of the relatively high molecular of solid.Other softening agent that the relatively large ratio of can take is effectively used is as gum arabic and have the plastics that similar performance distributes.
Tensio-active agent is as releasing agent.Particularly preferably select nonionic and/or anionic emulsifier.In fact these tensio-active agents can be monomer, oligopolymer or polymkeric substance.Preferably use and there is long side chain, particularly there is the tensio-active agent containing the side chain of 8-18 carbon atom.The polar surfactant with relative chain alkyl has shown particularly preferably, especially has those tensio-active agents that contain at least 8, contain better the alkyl chain of at least 12 carbon atoms.
It is for particularly advantageous releasing agent of the present invention that following compounds has shown:
Octadecyl sodium sulfosuccinate, dialkyl sodium sulfosuccinate, dodecyl sodium sulfate, Sodium Lauryl Sulphate BP/USP, Texapon Special, oleylcetyl alcohol sodium sulfate, poly alkyl alcohol glycol ether, fatty alcohol ethoxylate, nonyl phenol ethoxylate.
It is the releasing agent of giving prominence to especially in the present invention that Octadecane base disodium sulfosuccinate (ODSS) has shown.When use based on it lamination composition time, can make especially successfully (trouble-freely) for the adhesive tape of high speed change of lap.
Can be used as releasing agent and comprise octadecyl sodium sulfosuccinate, dialkyl sodium sulfosuccinate, dodecyl sodium sulfate, Texapon Special, oleylcetyl alcohol sodium sulfate, poly alkyl alcohol glycol ether, fatty alcohol ethoxylate, nonyl phenol ethoxylate for the preparation of compound lamination composition of the present invention, that there is outstanding effect.
In a kind of favourable scheme, especially for the ease of processing, bonding system of the present invention its binder layer one of at least at least temporarily liner have isolated material.Can operation technique personnel be the conventional material of this purposes for this reason; This lining more particularly consists of the material of siliconizing, preferably siliconizing paper, consists of.Can be used in vertical upwardly extending otch or the predetermined breakpoint of adhesive tape, it is more particularly bored a hole, the form of seam (kiss cut), crack (slitting) etc., and lining is divided into two sections or be possible separately preparing.
Can be especially with the form of the adhesive tape of extending, there is (below also referred to as adhesive tape) in privileged direction in bonding system of the present invention.The bonding system of adhesive tape form can have outstanding effect so that the form of its coiling (forming more rightly Archimedean screw from geometric view point) is existed.
The present invention further provides the method with bonding system high speed change of lap of the present invention.
Referring to exemplary embodiment, in the situation that do not wish that theme of the present invention is unnecessarily restricted by the selection of this exemplary, be described in the inventive method that connects two open widths in the high speed change of lap process of open width material of coiling.
In the first modification of the inventive method,
The uppermost open width circle (particularly its end or stub area) with the new volume of bonding system of the present invention is fixed on open width circle below, make to expose a part for the autohension tackiness agent that need to engage with the open width that is about to leave, wherein the applicable acquisition of this bonding system can be with the bonding that does not have the mode of adhesive region again to separate.After this by the new volume being so equipped with and the old volume adjacently placed that needs the almost completely unwinding of replacement, and accelerate to the speed of rotation substantially the same with this old volume, then be pressed in old open width, the autohension tackiness agent that this bonding system exposes when breadth has substantially the same speed is combined with old open width, make simultaneously uppermost open width layer (the end layer of this circle) with below between open width layer to be incorporated into parallel planes separated, after making separately to process, adhesive-free district exposes.In this case, especially by one of separately mechanism of having described for bonding system of the present invention, in other words, by as the connect elements described in detail above separately, the top open width layer and the combination of open width layer are below separated.
Use bonding system of the present invention, in other words comprise the system with lower member: roof carrier layer and bottom carrier layer, make two carrier layer interconnect and be adapted to open under the situation of static or high speed change of lap the smooth connect elements of this connection, and two binder layers, this binder layer is arranged on the surface of each carrier layer away from this connect elements separately, this connect elements is not binder layer, and be not being connected between connect elements and at least one carrier layer to produce by means of other binder layer, in addition, at least one limit, boundary of this connect elements is not in line, with respect to this boundary's margin boning out, focus on line (line of direction,principal), the line emphatically on this limit, boundary extends along privileged direction, and this limit, boundary has and is a plurality ofly positioned at its region of focusing on line one side and is a plurality ofly positioned at the region that it focuses on line opposite side.
In a kind of favourable expansion of the inventive method, make the combination that meets at right angles of adhesive tape and the open width moved.In other favourable scheme of the inventive method, adhesive tape also can with the open width with respect to moving with 30 ° at the most, more specifically with the acute angle combination of 10 ° at the most.
In this case, the particularly combination in the situation that adhesive tape and the open width moved meet at right angles, sepn process preferably with the emphatically line crosscut on connect elements non-rectilinear circle limit occur: namely, sepn process starts in those of connect elements protrude convex part farthest.
Open width is paper web and/or film web and/or textile material width (yarn fabric (woven), cloth (knit), non-woven fabrics etc.) particularly.
Form by connect elements can advantageously be set corresponding separating force or distraction force as the function of material.The form of connect elements or geometrical shape mean at adhesive tape, transversely initially tear overcoming of needs may be little.Yet this power must not be also too small, so as can not cause the boost phase of bonding operation with adhesive tape combination of the present invention treat opening too early of bonding open width material webs, and therefore cause and tear.This is specially adapted to belt-driven production line, and wherein in belt region, specific intensity is necessary.
Adhesive tape of the present invention has demonstrated the application that itself is suitable for expection highlightedly.
Claims (20)
1. when changing open width volume, be used for engaging a bonding system for this open width, it comprises Liang Tiao adhesive tape circle limit, and further comprises
Roof carrier layer and bottom carrier layer,
Smooth connect elements, this smooth connect elements
Two carrier layer are interconnected and
The in the situation that of static or high speed change of lap, be applicable to opening this connection,
Two binder layers, they are arranged on the surface of each carrier layer away from this connect elements separately,
Wherein
This connect elements is not binder layer, and
Be not being connected between connect elements and at least one carrier layer to produce by means of other binder layer,
It is characterized in that
At least one limit, boundary of this connect elements is not the extension that is in line,
And focus on line with respect to this boundary's margin boning out,
The line emphatically on this limit, boundary extends along privileged direction, and
This limit, boundary has and is a plurality ofly positioned at its region of focusing on line one side and is a plurality ofly positioned at the region that it focuses on line opposite side.
2. the bonding system of claim 1, is characterized in that this bonding system takes the adhesive tape form of extending in privileged direction.
3. the bonding system of claim 1, is characterized in that this connect elements takes the form of a plurality of independently two dimensional elements.
4. the bonding system of claim 2, is characterized in that this connect elements takes the form of a plurality of independently two dimensional elements.
5. the bonding system of any one in claim 1-4, is characterized in that the line parallel emphatically at least two long limits extends and extends in privileged direction.
6. the bonding system of any one in claim 1-4, it is characterized in that this connect elements be not be in line the line emphatically at least one limit, boundary that extends and the limit, boundary of at least one carrier layer focus between line, there is interval.
7. the bonding system of any one in claim 1-4, is characterized in that this connect elements is not be the in line line emphatically at least one limit, boundary of extension and the interval of focusing on to have between line 0.5mm-2.5mm on the limit, boundary of at least one carrier layer.
8. the bonding system of any one in claim 1-4, is characterized in that this connect elements is not be the in line line emphatically at least one limit, boundary of extension and the interval of focusing on to have between line 2.5mm-5mm on the limit, boundary of at least one carrier layer.
9. the bonding system of any one in claim 1-4, is characterized in that this connect elements is not be the in line line emphatically at least one limit, boundary of extension and the interval of focusing on to have between line 5mm-10mm on the limit, boundary of at least one carrier layer.
10. the bonding system of any one in claim 1-4, is characterized in that this connect elements is not be the in line line emphatically at least one limit, boundary of extension and the interval of focusing on to have between line 10mm-15mm on the limit, boundary of at least one carrier layer.
The bonding system of any one in 11. claim 1-4, it is characterized in that this connect elements comprise can with roof carrier layer or with the polymer layer of bottom carrier layer layering.
The bonding system of 12. claims 11, it is characterized in that this polymer layer and can and the carrier layer of this polymer layer layering between be provided with other layer.
The bonding system of 13. claim 1-4 any one, is characterized in that this connect elements comprises lamination composition layer, and this lamination composition forms predetermined breakpoint.
The bonding system of 14. claims 13, is characterized in that the additive that this lamination composition comprises the easy demoulding.
The bonding system of 15. claims 14, is characterized in that described additive is calcium stearate, talcum and/or with the polymkeric substance of stearyl-.
The bonding system of 16. claims 13, is characterized in that this lamination composition comprises binding agent and at least one tensio-active agent.
The bonding system of 17. claims 16, is characterized in that this binding agent is compound of polysaccharide.
The bonding system of 18. claims 1, it is characterized in that described smooth connect elements comprise can with roof carrier layer or with bottom carrier layer or with the polymer layer of roof carrier layer and the layering of bottom carrier layer, wherein for the polymkeric substance of described polymer layer, be selected from the multipolymer of polyvinyl chloride, polyvinylidene dichloride, polyvinyl alcohol, polyvinyl acetate, polyvinylpyrrolidone, vinylchlorid and vinyl-acetic ester.
The method that connects two open widths during the high speed change of lap of the 19. open width materials at coiling, the method right to use requires the bonding system of 1-18 any one.
The reel of the adhesive tape of 20. bonding systems that comprise claim 1-18 any one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310743860.XA CN103788885B (en) | 2008-06-03 | 2009-06-03 | Adhesive tape and uses thereof |
Applications Claiming Priority (8)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102008026448 | 2008-06-03 | ||
| DE102008026443.1 | 2008-06-03 | ||
| DE102008026443 | 2008-06-03 | ||
| DE102008026448.2 | 2008-06-03 | ||
| DE102008026447.4 | 2008-06-03 | ||
| DE102008026447 | 2008-06-03 | ||
| DE102008059381A DE102008059381A1 (en) | 2008-06-03 | 2008-11-27 | Adhesive tape and its use |
| DE102008059381.8 | 2008-11-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310743860.XA Division CN103788885B (en) | 2008-06-03 | 2009-06-03 | Adhesive tape and uses thereof |
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| Publication Number | Publication Date |
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| CN101597464A CN101597464A (en) | 2009-12-09 |
| CN101597464B true CN101597464B (en) | 2014-02-12 |
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| CN 200910145344 Expired - Fee Related CN101665667B (en) | 2008-06-03 | 2009-06-03 | Adhesive tape and use thereof |
| CN200910145346.XA Expired - Fee Related CN101597464B (en) | 2008-06-03 | 2009-06-03 | Adhesive tape and use thereof |
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| CN 200910145344 Expired - Fee Related CN101665667B (en) | 2008-06-03 | 2009-06-03 | Adhesive tape and use thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103788885A (en) * | 2008-06-03 | 2014-05-14 | 德莎欧洲公司 | Adhesive tape and its use |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102010029181A1 (en) * | 2010-05-20 | 2011-11-24 | Tesa Se | Splicing tape comprising two splittable fasteners |
| DE102016119520A1 (en) * | 2016-10-13 | 2018-04-19 | Aytec Automation Gmbh | Process for the preparation of strand material for the processing of seals |
| CN107174406A (en) * | 2017-04-10 | 2017-09-19 | 佛山市豪利家卫生用品有限公司 | A kind of paper diaper production method |
| FR3069184B1 (en) * | 2017-07-18 | 2021-10-01 | Sleever Int | CONNECTION DEVICE FOR LINES BY INTERNAL GLUE, ROLL OF ADHESIVE AND CORRESPONDING CONNECTION PROCEDURE |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1675120A (en) * | 2002-09-09 | 2005-09-28 | 普玛司公司 | Splicing tape with separating portions |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5323981A (en) * | 1991-12-13 | 1994-06-28 | Sequa Corporation | Splicer tape system |
| DE10123981A1 (en) * | 2001-05-17 | 2003-01-23 | Tesa Ag | duct tape |
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2009
- 2009-06-03 CN CN 200910145344 patent/CN101665667B/en not_active Expired - Fee Related
- 2009-06-03 CN CN200910145346.XA patent/CN101597464B/en not_active Expired - Fee Related
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1675120A (en) * | 2002-09-09 | 2005-09-28 | 普玛司公司 | Splicing tape with separating portions |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103788885A (en) * | 2008-06-03 | 2014-05-14 | 德莎欧洲公司 | Adhesive tape and its use |
| CN103788885B (en) * | 2008-06-03 | 2016-05-04 | 德莎欧洲公司 | Adhesive tape and uses thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101665667B (en) | 2013-06-12 |
| CN101665667A (en) | 2010-03-10 |
| CN101597464A (en) | 2009-12-09 |
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