MXPA99004661A - Laminate tape - Google Patents

Abstract

There is provided a laminate strip (20) with a support layer coated on one face with an adhesive (37) and divided into three portions (34, 36 and 38). A mechanical fastening member (44) with one face connected to the adhesive layer (32) in the second or third portions (36 and 38). The laminate strip (20) is folded so that the adhesive layer in the second and third portions are opposing each other with the mechanical fastening member (44) therebetween and a second face of the mechanical fastening member is releasably connected to the adhesive layer in the second or third portions opposite that to which the first face is connected.

Description

A BAND OF LAMINATE Field of Invention The present invention relates to a lamination tape which can be used in disposable absorbent articles such as diapers for adults and children and which is particularly suitable as a closure tape for disposable diapers but which can also be used as a closure means for other items that must be kept in a folded position. The lamination tape forming the object of the present invention comprises a mechanical fastening element that cooperates with a mechanical fastening element complementary to a two-part mechanical fastening device. The rolling tape is attached to one end of the article or object to be held in a condition bent by the rolling tape, and the mechanical fastening element complementary to the mechanical fastening element of the rolling tape is attached to the other end of the article. or object to be kept in a bent condition.

REF .: 30122 Background of the Invention.

In disposable diaper closure systems, it is known to perform the diaper cohesion by the use of mechanical fastening devices. The diapers provided with such fastening devices are known from U.S. Patent Nos. 4,869,724 and 5,053,028 as well as from EP 0,321,232 Bl, EP 0,324,578 Al, EP 0,374,730 A3 and EP 0,563,457. Al. All of these known closure systems are structured in the configuration of a "Y" comprising three fins joined in a "Y" shape. Two of said three fins have their inner sides facing each other provided with adhesive faces by which the "Y" shaped closure is fixed by adhesion in the region of its edge on both sides of the diaper. The third flap, which projects from the edge in the closed condition of the diaper, on one side bears an element of a two-part mechanical fastening device and is hooked with the other complementary mechanical fastening element. In the respective unused or closed condition of the diaper, said (closing) flap comprising said mechanical fastening element is placed in one of the fins fixedly attached to the diaper. In this condition, the closure flap is attached in a detachable manner with the other respective flap by means of a pressure sensitive adhesive or a similar adhesive. This adhesive connection exists outside that region of the closing flap where said mechanical fastening element is located.

Apart from the "Y" shaped closure systems mentioned above, the technique also includes adhesive closure tapes bent into a "Z" shaped configuration. These adhesive closure tapes comprise a lamination band composed of a backing layer and an adhesive layer located on one of the two sides of the backing layer. When viewed in the longitudinal direction, the laminate strip is divided into three portions, and in the "Z" condition, said three portions are located one above the other. One of the two outer portions of the lamination band is fixedly connected to the outer layer of the diaper by the adhesive layer of the support layer. Thus, in the "Z" condition of the adhesive closure band, "the adhesive faces of the other two portions are facing each other." To allow easy detachment of the adhesive tape folded into a "Z" shape, a release layer between the facing adhesive faces This layer is provided with a film of which one side is fixedly connected to the adhesive layer of one of said two portions of the closure band and of which the other side It has detachment properties and in the folded condition "Z" is located opposite to the adhesive layer of the last portion of the closure band, due to the requirement to provide one of the three portions of this known closure band with a film having an upper release side and which is connected with the adhesive layer, this known type of "Z" -adhesive closure bands is relatively expensive in its manufacture.

From EP 0 648 483 Al, a "Z" shaped bent closure band is known, provided, for example, for disposable diapers, which in the longitudinal direction of the band comprises successive portions separated from each other by lines of folded or folded. The first portion can be attached to one end of the diaper by an adhesive layer. Within the second portion after the first portion, the closure band is substantially free of adhesive. On the inner side of the third portion, which in the "Z" -shaped condition of the closure band is located opposite the second portion, a mechanical fastening element is provided. The cohesion of the "Z" shaped structure of this known closing band is obtained by small adhesive zones which serve for the mutual detachable connection of the respectively facing side faces of the three portions. In this configuration, the adhesive zone by which the third portion comprising the mechanical fastening element is fastened in a detachable manner in the second portion of the fastener strip, is located outside the mechanical fastening element. The manufacture of this known closure band is not without problems since it is required to use a support band that is only partially provided with adhesive. In this regard, it is more convenient and therefore less expensive for the manufacture and supply of the materials to start with a support material having an adhesive layer located on the total surface area of one side. In addition, the mechanical fastening element of this known locking strip that can be bent into a "Z" shape is formed as an integral component of the support band. In addition, this feature makes the manufacturing process more complicated and increases the costs of manufacturing materials. An object of the invention is to provide a lamination band, adapted to be folded into a "Z" shaped configuration and useful as a closure system partially for liquid absorbing articles such as baby or adult diapers, which is provided with one of the two mechanical fastening elements of a two-part mechanical fastening device and can be manufactured in a simple and therefore inexpensive manner.

Description of the invention The present invention comprises a lamination strip having a longitudinal direction and comprising a support layer and an adhesive layer on a first side of the support layer, the laminate strip comprising a first, a second and a third portion, the that in that order they are located successively when viewed in the longitudinal direction, and a first mechanical fastening element of a two-part mechanical fastening device, said two-part mechanical fastening device comprising two mechanical fastening elements that can be joined together yes while generating a holding force, where: the first mechanical fastening element comprises a lower side and an upper side, said upper side being able to cooperate with the second mechanical fastening element of the two-part mechanical fastening device, the first mechanical fastening element has its lower side fixedly connected to the adhesive layer within the second or third portions of the rolling band, and the rolling band is bent into a zigzag shape such that said second and said third portions of the lamination strip have their adhesive layers located opposite each other on the first face of the support layer and that the first mechanical fastener is located between said second and third portion of the laminate strip, wherein the upper side of the first mechanical fastening element is releasably attached to the adhesive layer of that portion of the laminate strip which is located opposite to the portion of the laminate band fixedly attached to the lower side of the first mechanical fastening element.

The lamination tape of the invention comprises a lamination band provided with a support layer and an adhesive layer located thereon. Particularly, the adhesive layer extends over the entire width and length of the support layer of the laminate strip, i.e., the adhesive layer is continuous. This rolling band can be folded into a zigzag or "Z" shaped structure, thus generating three portions that follow each other in the longitudinal direction of the rolling band and have folding or folding lines located in between transversely to each other. said longitudinal direction. Preferably, these three portions have substantially the same dimension in the longitudinal direction of the rolling band. As a result of the "Z" or "S" folded structure of the lamination strip, the adhesive layer in one of the two lateral end portions is located on the outside of the bent laminate strip. In this portion, the folded laminate strip can be fastened to one end of the article (diaper) provided for absorption of, for example, liquid, and which is held by the lamination band. To facilitate a further explanation of the invention, it will be assumed that this end portion is the first portion of the rolling band.

In the second or third portions of the lamination strip of the lamination tape of the invention, a first mechanical fastening element of a two-part mechanical fastening device is located. Said first mechanical fastening element has a lower side by which the mechanical fastening element is fixedly attached to the adhesive layer of the second or third portion. The upper side facing the lower side of the first mechanical fastening element has a structured configuration so as to cooperate with the upper side of the second mechanical fastening element which is formed complementary to the first mechanical fastening element. The upper side of the first mechanical fastening element comprises pins which are provided, for example, with enlarged hooks or heads, while the upper side of the second mechanical fastening element is provided, for example, with eyelets, so that when The upper sides of the two mechanical fastening elements are in contact with each other, the enlarged hooks or heads of the pins will be joined to the loops by means of a hook connection. The hooks or pins comprising the enlarged heads may be located in a regular manner, par- ticularly at equal distance from each other, or irregularly, again particularly at equal distance from one another. Preferably, mechanical fastening devices are used, of which one element comprises pins having heads located at their ends, these pins being located with heads with a density of approximately 80-800 cm2, preferably 200-500 cm2 and more preferably approximately 400 per cm2.

In this context, it should be emphasized that the use of the laminated tape of the invention does not depend on the specific configuration of the two-part mechanical fastening device. Therefore, the rolling tape can be used in each type of mechanical fastening system.

Therefore, in the folded condition in the form of the rolling tape of the invention, the upper side of the mechanical fastening element fixedly attached to the rolling band in the second or third portions, is positioned as to face the another respective portion, that is, the third or second respective portion. In this configuration, the upper side of this mechanical fastening element is attached in a detachable manner to the adhesive layer of the respective portion of the lamination strip. Thus, this connection that can be detached from the second and third portions of the rolling band in the bent condition of the rolling tape is obtained by the first mechanical fastening element provided on the rolling tape, particularly because the lower side of the first mechanical fastening element is fixedly attached - that is, in a manner that prevents unintentional detachment - to the second (or alternatively, the third) portion of the rolling band, while the upper side of the mechanical fastening element is detachably attached to the third (or alternatively to the second) portion of the rolling band, ie to the portion of the rolling band which is located opposite to the portion that is fixedly attached to the lower side of the mechanical fastening element. As on the upper side of the mechanical fastening element a full-face connection can not be generated with the adhesive layer of the portion of the laminate strip opposite this upper side, the bent laminate strip can be removed, ie deployed , using only a slight force of detachment.

It is characteristic of the lamination tape of the invention that the manufacture thereof can be started with a lamination strip that is provided with an adhesive layer over the entire surface thereof. It is only required that the mechanical fastening element be fixedly attached to one of the two portions having their adhesive layers facing each other in the folded "S" or "Z" shape of the lamination band. No additional special adhesive zones are required to obtain the cohesion between these two portions of the lamination strip, which due to the mechanical fastening element can not come into contact with each other directly, so that, in this respect, the manufacturing process It will not require additional measures to apply adhesives only in special areas.

To simplify the handling of the lamination tape of the invention to be used as a closure strip, the adhesive force between the upper side of the mechanical fastening element of the lamination strip and the portion of the laminate strip that is located opposite on this upper side, it should be as small as possible. In this respect it is useful to provide the upper side of the mechanical fastening element of the lamination strip with release properties. This can be done, for example, by applying a release coating on the upper side of the mechanical fastening element of the rolling band. A suitable material for such a coating is, for example, a poly (dimethyl siloxane) (PDMS) degraded by poly condensation (for example, the SylOff 294 material from Dow Corning).

As an alternative to the application of a release coating, it is also possible to shape the structure of the upper side of the mechanical fastening element of the lamination strip in such a way that it generates only a few contact points with the adhesive layer of the lamination strip. the portion of the laminate band located opposite the upper side of the folded condition of the lamination band.

According to a further alternative, the upper side of the mechanical fastening element of the rolling band can have parts thereof - that is, not its total surface area provided with a release coating. The relation between the coated surface and the uncoated surface of the upper side of the mechanical fastening element should be selected according to the desired release force, the materials for the adhesive layer and the release coating and, if desired, the configuration on the upper side of the mechanical fastening element fixedly connected to the rolling band.

To further facilitate the handling of the lamination band of the invention when the lamination band is moved from the folded condition to the stretched condition, the final portion of the lamination band that is not joined with said part of the article to be fastened the laminating tape can advantageously be provided with a free manipulation end of adhesive or tongue ("fingerlift"). This adhesive-free tongue can be generated, for example, by leaving the laminate band without an adhesive layer in this region. Another possibility resides in the provision of a protruding fin on the respective free edge of the portion, said fin being fixedly attached to the adhesive layer of the respective portion. A particularly suitable material for such a tongue comprising a separate fin fixedly attached to the laminate band is polypropylene. Alternatively, the tongue can also be made by bending the laminate band at that end.

In order to also maintain the first and second portions of the laminate strip in its superimposed condition in the folded state of the lamination strip, it is advantageous to provide a zone of adhesive in the region of one of those two portions on the second side of the laminate strip. Support layer that looks opposite to the adhesive layer. This adhesive zone provides a releasable joint between the first and second portions of the laminate strip on the second side of the support layer of the laminate strip. In this way, in the bent condition of the rolling band, the respectively adjacent portions are joined in a detachable manner while being secured against unwanted detachment.

Suitably, the bent laminate strip is provided with an endless laminate strip in the direction transverse to its longitudinal dimension. The individual laminate strips are produced by cutting individual strips of the endless laminate tape folded into a zigzag shape, the width of said strips being identical to the width of the desired lamination strips. Suitably, the endless rolling belt is wound on a roll, with the winding direction of the roll extending transversely to the longitudinal direction of the individual rolling bands, ie, in the longitudinal direction of the endless rolling belt.

Brief Description of the Drawings One embodiment of the lamination band of the invention will be described in greater detail below with reference to the Figures; by way of example, the lamination band will be mainly explained as used for closing a disposable diaper.

Figure 1 is an elevation view on the outer side of a disposable diaper.

Figure 2 is a disposable diaper, is a sectional view along the line II-II of Figure 1, with Figure 2A showing an enlarged representation of the mechanical fastening element.

Figure 3 is a plan view of the waist region of the diaper in the closed condition.

Figure 4 is a view of the rolled strip bent in the rolled position.

Figures 5 to 7 are views to illustrate some of the steps of the process for producing the laminate band.

Detailed description of the invention.

Figure 1 shows a plan view of the outer side of a disposable diaper 10 for babies. The diaper 10 has its outer side provided with a film 12 impervious to moisture.

Beneath said film 12, a soft non-woven intermediate layer 14 is located in the central region of the diaper 10. On the side of said non-woven intermediate layer 14 facing the opposite side of the outer film 12, one or numerous films are located. tear resistant 15, of which the general cut shape is equal to the shape of the outer film 12 and which, in the edge region projecting beyond the nonwoven intermediate layer 14, are bonded to the outer film 12. In the upper edge portion 16 of the diaper 10 as seen in the orientation of Figure 1, two closure strips 20 folded in an "S" or "Z" shape are located on the two side edges 18 of the edge portion 16. These closure bands 20 are attached to the outer film 12. Located in the lower portion 22 of the diaper 10 according to Figure 1 are two central mechanical fastening elements 24 which are located on the outside. sma form from the outside to the outer film 12 and are fixedly attached to the diaper 10. Said two mechanical fastening elements 24 respectively form a part of a two-part mechanical fastening device, forming the second part or complementary fastening element of the fastening device a part of each fastening strip 20. As shown schematically in Figure 1, the fastening mechanical elements 24 located in the lower portion 22 of the diaper 10 comprises numerous projecting eyelets 26. In combination with hooks projecting from the fasteners. fastening elements of the closing bands 20, these eyelets 26 form a mechanical fastening device that operates in the manner of a hook-and-eye fastener. The arrangement of the fastening elements of the closing bands 20 will be explained in more detail below in connection with the description of the design of the closing bands 20.

The design of a closure band 20 will be explained with reference to Figure 2. The closure band 20 is a laminate band bent into a "Z" shaped configuration, comprising a support layer 28 made of a synthetic material and having a side 30 provided with an adhesive layer 32 over the entire surface thereof. The laminate band 20 is divided into three portions of substantially equal length, particularly a first portion 34, a second portion 36 that follows the first portion 34, and a third portion 38 that follows the second portion 36. The first and third portions 34 and 38 form the end portions of the rolling strip 20. while the second portion 36 is located in the middle between these two end portions. In the transition regions 40 and 42 between the portions 34 and 36 and respectively the portions 36 and 38, the lamination band 20 is folded respectively approximately 180 °, resulting in the folded structure in the form of "Z" shown in the Figure 2 wherein the three portions 34 to 38 are located substantially parallel to each other.

In the folded condition of the lamination band '20, its adhesive layer 32 in the region of the first portion 34 is located externally, ie on the side of the support layer 28 facing the opposite side of the second portion 36. As a result, the adhesive layer 32 in the region of the second intermediate portion 36 of the adhesive layer 32 is located opposite to the lamination band in the region of the third portion 38 when the lamination band has been folded in the form of "Z" As already mentioned above, the lamination band 20 comprises one of the two mechanical fastening elements of a two-part mechanical fastening device of which the second fastening element 24 is externally attached to the diaper 10. In the Figures, the The first mechanical fastening element attached to the rolling band 20 is named with the reference number 44. This first mechanical fastening element 44 has a lower side 46 by which it is fixedly connected to the adhesive layer 32 in the region of the third portion 38 of the lamination strip 20. On the upper side 48 facing the opposite side of the lower side 46, the first mechanical fastening element 44 comprises numerous pins 50 which are secured in a substrate layer 52 of the mechanical element 44, having the free ends of the pins 50, facing the opposite side of the substrate layer 52, an enlarged shape as shown in the FIGS. at 54. The first mechanical fastening element 44 is produced by a synthetic material using a technique known as such.

In the bent condition of the lamination band 20, the enlarged head portions 54 of the first mechanical fastening element 44 abut the adhesive layer 32 of the lamination band 20 in the region of the second portion 36 of the lamination band. 20 so that said head portions 54 are releasably attached to the adhesive layer 32. As the contact area of the upper side 48 of the first mechanical fastening element 44 with the adhesive layer 32 is smaller than the contact area of the lower side 46 of the mechanical fastening element 44, the two portions 36 and 38 of the rolling band 20 can be detached relatively easily from one another while the first mechanical fastening element 44 with its lower side 46 it is fixedly attached to the adhesive layer 32 in the region of the third portion 38 of the lamination strip 20.

As illustrated in Figure 2, the lamination band 20 comprises a flap 58 projecting behind the free end 56 of the third portion 38 facing the opposite side of the second portion 36, said flap 58 being like the first mechanical clamping element 44, fixedly attached to the adhesive layer 32 in the region of the third portion 38 of the lamination strip 20. The flap 58 serves as the tongue of the lamination strip 20 where the lamination strip 20 is grasped to be moved from the folded condition to the unfolded condition. To secure the first two and second portions 34 and 36 of the lamination band against undesired unfolding in the folded condition of the lamination band, a small adhesive band 60 is located between the facing regions of the support layer of the first layer. and the second portions 34 and 36. By this adhesive band 60, the second side 62 of the support layer 28 facing the opposite side of the adhesive layer 32 is joined in the region of the first and second portions 34 and 36. The second side 62 of the support layer 28 has its contact areas attached releasably to the adhesive strip 60.

Basically, the second side 62 is provided with release properties that are obtained by means of a corresponding coating on this side of the support layer 28. (Typically, said coating is provided by a silicone compound or a polyurethane release agent. ). Alternatively, it can be provided that the material for the support layer 28 has intrinsic release properties and that the side of the support layer 28 carrying the adhesive layer 32 is coated with an adhesive agent ("primer") on which it is applied. then adhere the material of the adhesive layer 32.

As already mentioned briefly above, the adhesive layer 32 of the region of the second portion 36 of the rolling band 20 has the main purpose of holding the second and third portions 36 and 38 of the rolling band 20 in their positions according to Figure 2 making stop on upper side 48 of the mechanical fastening element 44 and preventing said portions from unfolding unintentionally. While the adhesive strength of the adhesive layer 32 in the second portion 36 of the lamination strip 20 should therefore be relatively low, so that the lamination strip 20 can be unfolded with the application of a not very strong force, the material of the adhesive layer in the first and third portions 34 and 38 of the lamination strip 20 should have a maximum adhesive force. Particularly, according to Figure 2, the adhesive bond to the outer film 12 of the diaper 10 occurs in the first portion 34 of the laminate band 20. In this region, the adhesive force has to be large to maintain the band of the adhesive. laminate 20 reliably joined to the diaper 10. Also the attachment of the underside 46 of the first mechanical fastening element 44 to the lamination band 20 has to be reliable; for this reason, the adhesive layer 32 has to ensure an adhesive strength with unusually high also in the region of the third portion 38 of the lamination strip 20. To allow the upper side 48 of the first mechanical fastening element 44 to be detached from the adhesive layer 32 without the use of any significant force even when an adhesive has been used which generates a high adhesive strength for the adhesive layer 32, the upper side 48 of the first mechanical fastening element 44, i.e., the enlarged head portions of the first mechanical fastening element 44, is provided with a release coating, illustrated in the Figures at 64. Said release coating 64 reduces the adhesion between the upper side 48 of the first mechanical fastening element 44 and the adhesive layer 32 in the region of the intermediate portion 36 of the laminate strip 20. Thus, the strip of laminate 20 can be stretched without application of considerable force ndola on the flap 58 forming the tab. In this method, also the first portion 34 or resp., The second portion 36 of the lamination band 20 are easily detached from the adhesive band 60, where this effect can be obtained by corresponding characteristics of the surface of the support layer 28 and / or the appropriate selection of the adhesive material for the adhesive strip 60.

Figure 3 shows a plan view of the waist region of the closed diaper 10, said waist region being defined by the upper and lower portions 16 and 22 according to Figure 1. Figure 3 illustrates the manner in which wherein the hook elements, formed as the pins 50 of the first mechanical fastening element 44 of the rolling band 20 provided with enlarged head portions 54, are hooked into the eyelets 26 of the second mechanical fastening element 24 on the outer side of the diaper 10. This manner of a union that can be detached from the lamination bands 20 to the diaper 10 allows a repeated opening and closing of the diaper 10 without decreasing the closing force. In addition, this mechanical locking mechanism will work advantageously even when the mechanical fastening elements have been accidentally stained with grease or oil, as is easily done when the diaper is placed on a baby or a small child. After the diaper 10 has been used, the adhesive layer 32, which is exposed in the central portion 36 of the stretched lamination band 20, can be used to hold the folded diaper.

Figure 4 shows a laminated band 66 folded in a zigzag shape wound in its folded condition into a roll 68. As evident from Figure 4, the laminate tape 66 comprises all the components of the laminate band 20 of the Figure 2. The individual laminate strips 20 are generated by cutting the laminate tape 66 into its length, i.e. cutting individual pieces of laminate tape 66 transversely to its longitudinal direction, as shown schematically in Figure 4.

The manufacture of the lamination tape 66 according to Figure 4 starts with a support layer 28 in the form of a strip having a side 30 provided with the adhesive layer 32 (Figure 5). In one of the two side bands of the band of the support layer 28, a small band is attached which is fixedly attached to the adhesive layer 32 and projects laterally behind the support layer 28 (Figure 6). This protruding band forms the flanges 58 or tongues of the last lamination strip 20. Laterally with respect to the protruding band attached to the adhesive layer 32 is attached a mechanical fastening element 44 with a band shape which is attached at its bottom 46 in a fixed manner to the adhesive layer 32.

When viewed in the wide direction of the band of the stretched support layer 28, the first mechanical band-holding member 44 extends within a third side portion 38. Subsequently, in the middle third 36 or the other lateral third 34 of the band of the support layer 28, the side 62 of the band of the support layer 28 facing the opposite side of the adhesive layer 32 is provided with the strip of detachable adhesive 60. Then, this structure is bent into a "Z" shaped laminate tape 60 (Figure 7) which will then be rolled up to form a roll 68 to be processed or transported later. To produce the diaper 10, small bands 20 of the lamination tape 66 of the roll 68 are cut; these bands will then be joined as closure bands on the outer side of the diaper 10 according to Figures 1 and 2.

Example .

A strip of laminate 20 was produced according to the teachings of the invention. This lamination band 20 had a longitudinal dimension of 9.3 cm and a width dimension of 2.5 cm. The support layer 28 of the lamination strip was composed of a polypropylene material having a thickness of 0.11 mm. An adhesive layer 32 having a thickness of 0.035 mm was applied on a "side 30 of this support layer 28. This adhesive layer 32 was composed of a synthetic rubber / adhesive resin material.

The flap 58 attached to the adhesive layer 32 had the same width as the laminate band 20 and a dimension of 0.8 cm in the longitudinal direction of the laminate strip 20. This flap 58 had a thickness of 0.11 mm and it was composed of a polypropylene material that was provided with a release layer of poly id 1 if 1 oxane on that side that was not bonded to the adhesive layer 32. The tab 58 protruded 0.1 cm behind the lamination band 32. Laterally with respect to the flange 58, a first mechanical fastening element 44 was attached, having a dimension of 2.7 cm in the longitudinal direction of the rolling strip 20. The first mechanical fastening element 44 had a thickness of 0.40 mm. The first mechanical fastening element 44 was provided with a substrate layer 52 of a thickness of 0.12 mm, with pins 50 having enlarged head portions protruding from one side of the substrate layer 52. The height of these pins 50 inclusive of the enlarged head portions 54 was 0.28 mm. The hook elements of the first mechanical fastening element 44, composed of the pins 50 and the enlarged head portions 54 were located on the substrate 52 in a regular orthogonal matrix structure. The number of hook elements per unit area was 390 / cra '. The substrate 52, the pins 50 and the enlarged head portions 54 were composed of a polypropylene material.

For the release coating 64 on the upper side 48 of the first mechanical fastening element 44 attached to the hook elements, a PDMS material was selected. In the bent condition and under contact of the upper side 58 coated with the first mechanical fastening element 44 with the adhesive layer 32, the release force was 0.10 N for a detachment movement at an angle of 900, and 0.15 N for a detachment movement at an extremely obtuse angle of 1800.

The material selected for the adhesive strip 60 was a synthetic rubber / adhesive resin material. The adhesive strength of this material for bonding with the support layer 28 was 2.5.

The alternative materials for the support layer 28 and the fin 58 were polyethylene and polyester films; for the adhesive layer 32, various gums of e s t ireno-i sopr openo-e s t i rein; for the release coating 64, silicone acrylate and polyurethanes; and for adhesive tape 60, the liner, styrene-butadiene rubber-is styrene-styrene-isopropene-styrene rubber.

It is noted that in relation to this date, the best method known by the applicant to carry out the aforementioned invention, is the conventional one for the manufacture of the objects to which it relates.

Having described the invention as above, the content of the following is claimed as property.

Claims (17)

Claims

1. A lamination tape, characterized in that it comprises: - a lamination strip having a longitudinal direction and comprising a support layer and an adhesive layer on a first side of the support layer, the laminate strip comprising a first, a second and a third portion which are located in this order successively when viewed in said longitudinal direction, and a first mechanical fastening element of a two-part mechanical fastening device, said two-part mechanical fastening device comprising two mechanical fastening elements. which can be joined together while generating a retaining force, wherein: the first mechanical fastening element comprises a lower side and an upper side, said upper side being capable of cooperating with the second mechanical fastening element of the mechanical device of two-part clamping, the first mechanical clamping element has its lower side joined fixedly to the adhesive layer within the second or third portions of the rolling band, and the rolling band is bent such that said second and third portions of the rolling band have their adhesive layers located opposite to each other. if on the first face of the support layer and that the first mechanical fastening element is located between said second and third portions of the rolling strip, wherein the upper side of the first mechanical fastening element is attached in a shape that can be detaching the adhesive layer from that portion of the laminate band which is located opposite to the portion of the laminate band fixedly attached to the underside of the first mechanical fastening element.

2. The lamination tape according to claim 1, characterized in that the upper side of the first mechanical fastening element has release properties to facilitate the removal of the second or third portions of the laminate band opposite said upper side of the adhesive layer of the rolling band.

3. The lamination tape according to claim 2, characterized in that the upper side of the first mechanical fastening element has a release coating provided thereon.

4. The rolling tape according to any of claims 1 to 3, characterized in that the first mechanical fastening element has its upper side provided with hook elements for a hook connection with the associated eyelet elements of the second mechanical fastening element of the fastener. mechanical device for holding two parts.

5. The laminate tape according to claim 4 and 2 or 3, characterized in that the hook elements have free ends, at least some of them being provided with a release coating.

6. The lamination tape according to claim 4 or 5, characterized in that the hook elements are distributed in a regular manner.

7. The rolling tape according to claim 6, characterized in that the hook elements are respectively located at equal distances from each other.

8. The lamination tape according to any of claims 3 to 7, characterized in that the hook elements are formed as pins projecting integrally from a carrier substrate and having their free ends provided with enlarged heads.

9. The lamination tape according to any of claims 1 to 8, characterized in that the adhesive layer is continuous in the region of the second or third portions of the laminate band attached releasably to the upper side of the first mechanical element of subject

10. The rolling tape according to any of claims 1 to 9, characterized in that the lower side of the first mechanical fastening element is fixedly attached to the adhesive layer in the third portion of the rolling band.

11. The lamination tape according to any of claims 1 to 10, characterized in that an end portion of the third portion of the lamination strip has an adhesive-free tab.

12. The lamination tape according to any of claims 1 to 11, characterized in that an adhesive zone for releasably attaching the second side of the support layer in the region of the first and second portions of the web Laminated, is located in the region of said first or second portions of the lamination strip on the second side of the carrier layer facing the opposite side of the adhesive layer.

13. The lamination tape according to any of claims 1 to 12, characterized in that the second side of the support layer facing the opposite side of the adhesive layer has release properties.

14. The lamination tape according to any of claims 1 to 13, characterized in that the adhesive layer extends on the support layer in a continuous manner.

15. The rolling tape according to any of the claims 1 to 14, characterized in that the three portions of the rolling band have substantially the same dimension in the longitudinal direction of the rolling band.

16. The rolling tape according to any of claims 1 to 15, characterized in that the rolling band in the longitudinal direction has a considerably smaller dimension than in a direction transverse to the longitudinal direction.

17. The rolling belt according to any of claims 1 to 16, characterized in that the rolling band is wound to form a roll, the longitudinal direction of the rolling band extending transversely to the winding direction of said roll.