DE202011051166U1 - Double-sided self-adhesive tape - Google Patents

Abstract

Double-sided self-adhesive tape, characterized in that the adhesive tape (1, 5) has at least three firmly connected, each hardened functional layers (2, 3, 4; 6, 7, 8, 9, 10) that the at least three functional layers (2, 3, 4; 6, 7, 8, 9, 10) are each designed as an adhesive layer such that the at least two functional layers (2, 3; 7, 9) arranged on the at least one middle functional layer (4; 6, 8, 10) have a surface tack (tack) of at least 30 Newtons (N) at + 20 ° C according to DIN EN 1719, and that the at least one middle functional layer (4; 6, 8, 10) has a peel strength Finax at a tear speed of 300 mm / min + 20 ° C of at least 60 N / 25 mm, according to DIN EN 28510-2.

Description

The invention relates to a double-sided self-adhesive tape.

From practice, it is known to provide air-tight, windproof and rainproof bonding of single-layer and multi-layer films in dry construction (for sealing vapor barriers and barriers) as well as vapor-permeable webs (for roof and facade sealing) and joint sealing (in the case of windows, for example). and door assembly) to ensure controlled energy consumption. In the field of film overlaps, the films are usually overlapped in addition to the mechanical fixation on the usual building substrates with one-sided adhesive tapes to achieve the necessary airtightness. In the known from practice Anschlussverklebung in which films are placed on building substrates, the sealing layers are prepared according to a first known embodiment with non-cured adhesive sealants based on dispersion. Here is a cure by the physical drying. A second embodiment of a known from practice Anschlussverklebung provides reactive adhesive sealants, for example on polyurethane, silicone or silane-terminated polymer-based, in which a curing by reaction with moisture takes place. These known from practice methods work with adhesive sealing compounds, which are stored in cartridges. These adhesive compositions on a dispersion and reactive basis wet the building substrates well. Depending on the application, they have good adhesion to the respective films used and, after curing, achieve permanently age-resistant bond strengths. However, the processing of these masses, which are placed in cartridges, is limited in application to unmanageable cure times (cure), and may take up to several days to achieve the required application strength, depending on environmental conditions, material moisture and material wicking. In part, these known from practice masses during processing, for example, in wet weather only limited use.

From the prior art ( DE 203 15 592 U1 ) is a single-sided or double-sided adhesive tape is known, which is made for example on the basis of synthetic polymers. Here, the curing of the adhesive, as far as possible, takes place. Residual hardening is partly due to additional UV radiation or air humidity during processing. However, these prior art adhesive compositions generally achieve significantly lower and less age-stable bond strengths than the masses described above.

Another known from practice type of Anschlussverklebung consists of adhesive tapes or adhesive sealants on butyl or bitumen-based. These masses are hereby largely cured, the remaining curing is carried out by dispensing small amounts of solvent. In practice, these compositions are used only to a very limited extent for the abovementioned applications, since these compositions can only be used to a limited extent in applications, in particular at temperature ranges greater than + 25 ° C., because of their then clearly decreasing bond strengths.

The technical problem underlying the invention is to provide a self-adhesive tape, which can be easily processed in the field of bonding of single or multi-layer films in drywall and vapor permeable webs and in the joint seal and beyond durable durable and on the most diverse Building surfaces very well liable.

This technical problem is solved by a self-adhesive tape with the features of claim 1.

The double-sided self-adhesive tape according to the invention is characterized in that the adhesive tape has at least three firmly bonded, each cured functional layers, that the at least three functional layers are each formed as an adhesive layer, that at least two arranged on the at least one middle functional layer functional layers a Tkle ) of at least 30 Newton (N) at + 20 ° C according to DIN EN 1719 and that the at least one middle functional layer has a peel strength Finax at a breaking speed of 300 mm / min, at + 20 ° C of at least 60 N / 25 mm, after DIN EN 28510-2 , having.

A further double-sided self-adhesive tape according to the invention is characterized in that the adhesive tape has at least three permanently bonded functional layers, that the at least three functional layers are each formed as an adhesive layer, that at least two functional layers arranged on the at least one middle functional layer have a surface tackiness ( Tack) of at least 30 Newton (N) at + 20 ° C according to DIN EN 1719 and that the at least one middle functional layer has a peel strength Finax at a breaking rate of 100 mm / min, at + 20 ° C of at least 45 N / 25 mm, after DIN EN 28510-2 , having.

Another double-sided self-adhesive tape is characterized in that the adhesive tape has at least three firmly bonded, each cured functional layers, that the at least three functional layers are each formed as an adhesive layer, that at least two arranged on the at least one middle functional layer functional layers a Oberflächenklebrigkeit (Tack ) of at least 30 Newton (N) at + 20 ° C according to DIN EN 1719 and that the at least one middle functional layer has a peel strength Finax at a breaking rate of 10 mm / min, at + 20 ° C of at least 20 N / 25 mm, after DIN EN 28510-2 , having.

The fact that the functional layers arranged on the middle functional layer have a high surface tackiness and that the at least one middle functional layer has a high peel strength at the same time, the adhesive tape according to the invention has the advantage that it can be used on very uneven surfaces such as on stone or woodchip wallpaper or textured plaster adheres very well and that a permanent bonding, which meets the requirements in the construction sector, is achieved.

An essential feature of the adhesive tape according to the invention is that the individual functional layers of the adhesive tape are very well and permanently compatible with each other and are optimally interconnected / laminated in the manufacturing process.

The test after DIN EN 1719 was performed with PET-film-coated adhesive film on glass, loop test with adhesive surface 25 × 25 mm, at a test speed of 300 mm / min.

Thus, the adhesive tape according to the invention is distinguished by the fact that it has, on the one hand, a high peel strength and, on the other hand, a high surface tack.

According to the invention, an adhesive tape with a double-sided adhesive cured compound is specified, with the necessary adhesion to all the usual materials in drywall, in the roof and facade waterproofing or in the window and door assembly is achieved, with all the films can be glued and with immediate adhesion to the films and to the slightly rough building materials.

The adhesive tape according to the invention can be used in fluctuating processing conditions in indoor use and in outdoor use.

The adhesive tape of the invention is compatible with all construction materials, with the usual films and film composites. The adhesive tape according to the invention has a very high initial adhesion of the glued foil, allows the blowerdoor test for a short time (less than 16 hours) after the adhesive has been applied, and achieves age-resistant, durable and high bond strengths and impermeability. In addition, the adhesive tape according to the invention is not to be labeled according to the regulation of hazardous working materials for specialist companies and end users. Furthermore, it is easy and efficient to handle.

According to a particularly preferred embodiment of the invention, the adhesive tape is formed without a carrier layer. This means that all functional layers of the adhesive tape are formed as adhesive layers. As a result, the high peel strength and the high surface tack are achieved.

The total thickness of the adhesive tape is advantageously at least 500 μm. According to a further advantageous embodiment, the total thickness of the adhesive tape is a maximum of 4 mm.

This selected range of thickness of the tape allows the tape to handle well and still achieves the required high bond strength and tightness.

According to a particularly preferred embodiment of the invention, the total thickness of the adhesive tape is between 0.8 mm and 3 mm. Particularly preferred is a total thickness of 1.5 mm.

A further advantageous embodiment of the invention provides that the functional layers arranged on the at least one middle functional layer each have a minimum thickness of 100 μm. The functional layers arranged on the at least one middle functional layer have a high surface tack. In order to achieve this surface tack, it is sufficient to provide a layer thickness of at least 100 μm.

A further advantageous embodiment of the invention provides that the at least one middle functional layer has a minimum thickness of 300 μm. The at least one middle functional layer serves to ensure the high peel strength of the self-adhesive tape. For this purpose, a layer thickness of at least 300 microns is sufficient.

A further preferred embodiment of the invention provides that the adhesive tape has at least two functional layers arranged on the at least one middle functional layer and having a minimum thickness of 100 μm in each case. For example, on one side of the at least a middle functional layer two functional layers and on the other side of the at least one middle functional layer three functional layers may be provided. It is also possible to construct the self-adhesive tape symmetrically, so that at least two functional layers are arranged on the middle functional layer on each side.

The middle functional layer advantageously has a greater minimum thickness than the functional layers arranged on the at least one middle functional layer.

A further advantageous embodiment of the invention provides that the adhesive tape has a minimum width of 8 mm. As a result, many meters adhesive bond are possible.

According to a particularly preferred embodiment, the adhesive tape has a maximum width of 80 mm. Larger latitudes become unwieldy.

According to a preferred embodiment of the invention, the adhesive tape has a width between 10 and 40 mm, more preferably a width between 15 and 25 mm is provided. This width ensures easy work with a good manageability of the tape.

A particularly preferred embodiment of the invention provides that the adhesive tape is torn off by hand.

For this purpose, fibers can advantageously be arranged in the adhesive tape. The fiber structure, which is arranged in the self-adhesive tape, may be formed, for example, as a rectangular or rhombus-like textile structure.

A further advantageous embodiment of the invention provides that the functional layers consist of synthetic polymers and / or acrylates. These adhesive compositions have proven to be particularly advantageous for the inventive use.

A further advantageous embodiment of the invention provides that the adhesive tape is laminated on one side or on both sides with a non-stick coated release liner. This makes it possible to arrange the adhesive tape on a roll or spool without sticking the adhesive tape to the roll or spool itself. Advantageously, a non-stick coated, for example, silicone-coated paper separator liners can be used.

The embodiment that the adhesive tape is present on a roll or spool is particularly preferred, since this makes the handling of the adhesive tape particularly good.

The coil may advantageously have one or two flanges. The arrangement of a flange is particularly advantageous for handling. With little tape remaining on the spool during use, with the provision of only one flange, it is easy to grasp and peel off the end of the tape by hand. The arrangement of two flanges on the coil complicates the handling of the tape when there is only a little tape on the spool. Two flanges have advantages in the storage of the coil with the tape.

If no flange is provided, at least one nonstick coating paper is advantageously provided laterally on the adhesive tape, so that the adhesive tape arranged on the roll does not unintentionally make an adhesive connection with other materials laterally.

A further advantageous embodiment of the invention provides that the adhesive tape is designed to be processable with a suitable rolling device. As a result, the handling of the adhesive tape according to the invention is optimized.

Further features and advantages of the invention will become apparent from the accompanying drawings, in which several embodiments of an adhesive tape according to the invention are shown by way of example only. In the drawing show:

1 a self-adhesive tape with three layers in cross-section;

2 a self-adhesive tape with five layers in cross section.

1 shows a self-adhesive tape 1 with two outer functional layers 2 . 3 and a middle functional layer 4 , The outer functional layers have a thickness of 200 microns, while the middle functional layer 4 has a thickness of 400 microns.

The outer functional layers 2 . 3 have a particularly high surface tack 4 on. The middle functional layer 4 has a particularly high peel strength. The self-adhesive tape 1 has the advantage that the band 1 can be applied tightly on rough surfaces and building materials and also has a high durability.

2 shows a band 5 , which in turn is a middle functional layer 6 having. On each Side of the middle functional layer 6 are each two more functional layers 7 . 8th . 9 . 10 arranged.

Also in this structure, the functional layers 7 . 9 a high surface tackiness, while the middle functional layer 6 . 8th . 10 has a high peel strength.

The functional layers 7 . 9 have a thickness of 150 microns and the middle functional layer 6 . 8th . 10 a thickness of 300 microns.

The self-adhesive tape 6 has textile fibers 11 on to the band 6 to give a textile structure. Through the textile fibers 11 is the band 6 designed tear off by hand.

LIST OF REFERENCE NUMBERS

1

tape

2

outer functional layer

3

outer functional layer

4

middle functional layer

5

tape

6

middle functional layer

7

outer functional layer

8th

inner functional layer

9

outer functional layer

10

inner functional layer

11

textile fibers

QUOTES INCLUDE IN THE DESCRIPTION

This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Cited patent literature

• DE 20315592 U1 [0003]

Cited non-patent literature

• DIN EN 1719 [0007]
• DIN EN 28510-2 [0007]
• DIN EN 1719 [0008]
• DIN EN 28510-2 [0008]
• DIN EN 1719 [0009]
• DIN EN 28510-2 [0009]
• DIN EN 1719 [0012]

Claims (24)

Double-sided self-adhesive tape, characterized in that the adhesive tape ( 1 . 5 ) at least three firmly interconnected, respectively cured functional layers ( 2 . 3 . 4 ; 6 . 7 . 8th . 9 . 10 ), that the at least three functional layers ( 2 . 3 . 4 ; 6 . 7 . 8th . 9 . 10 ) are each formed as an adhesive layer, that the at least two on the at least one middle functional layer ( 4 ; 6 . 8th . 10 ) arranged functional layers ( 2 . 3 ; 7 . 9 ) have a surface tack (Tack) of at least 30 Newton (N) at + 20 ° C according to DIN EN 1719, and that the at least one middle functional layer ( 4 ; 6 . 8th . 10 ) a peel strength Finax at tear speed 300 mm / min, at + 20 ° C of at least 60 N / 25 mm, according to DIN EN 28510-2. Double-sided self-adhesive tape, characterized in that the adhesive tape ( 1 . 5 ) at least three firmly interconnected, respectively cured functional layers ( 2 . 3 . 4 ; 6 . 7 . 8th . 9 . 10 ), that the at least three functional layers ( 2 . 3 . 4 ; 6 . 7 . 8th . 9 . 10 ) are each formed as an adhesive layer, that the at least two on the at least one middle functional layer ( 4 ; 6 . 8th . 10 ) arranged functional layers ( 2 . 3 ; 7 . 9 ) have a surface tack (Tack) of at least 30 Newton (N) at + 20 ° C according to DIN EN 1719, and that the at least one middle functional layer ( 4 ; 6 . 8th . 10 ) a peel strength Finax at tear speed 100 mm / min, at + 20 ° C of at least 45 N / 25 mm, according to DIN EN 28510-2. Double-sided self-adhesive tape, characterized in that the adhesive tape ( 1 . 5 ) at least three firmly interconnected, respectively cured functional layers ( 2 . 3 . 4 ; 6 . 7 . 8th . 9 . 10 ), that the at least three functional layers ( 2 . 3 . 4 ; 6 . 7 . 8th . 9 . 10 ) are each formed as an adhesive layer, that the at least two on the at least one middle functional layer ( 4 ; 6 . 8th . 10 ) arranged functional layers ( 2 . 3 ; 7 . 9 ) have a surface tack (Tack) of at least 30 Newton (N) at + 20 ° C according to DIN EN 1719, and that the at least one middle functional layer ( 4 ; 6 . 8th . 10 ) a peel strength Finax at tear speed 10 mm / min, at + 20 ° C of at least 20 N / 25 mm, according to DIN EN 28510-2. Self-adhesive tape according to one of the preceding claims, characterized in that the adhesive tape ( 4 . 6 ) is formed without a carrier layer of non-adhesive material. Adhesive tape according to one of the preceding claims, characterized in that the functional layers ( 2 . 3 . 4 ; 6 . 7 . 8th . 9 . 10 ) consist of synthetic polymers and / or acrylates. Self-adhesive tape according to one of the preceding claims, characterized in that the total thickness of the adhesive tape ( 1 . 5 ) is at least 500 microns. Self-adhesive tape according to one of the preceding claims, characterized in that the total thickness of the adhesive tape ( 1 . 5 ) is a maximum of 4 mm. Self-adhesive tape according to one of the preceding claims, characterized in that the total thickness of the adhesive tape ( 1 . 5 ) is between 0.8 mm and 3 mm. Self-adhesive tape according to one of the preceding claims, characterized in that the on the middle functional layer ( 4 ; 6 . 8th . 10 ) arranged functional layers ( 2 . 3 ; 7 . 9 ) each have a minimum thickness of 100 microns. Self-adhesive tape according to one of the preceding claims, characterized in that the at least one middle functional layer ( 4 ; 6 ) has a minimum thickness of 300 microns. Self-adhesive tape according to one of the preceding claims, characterized in that the adhesive tape ( 1 . 5 ) has a width of at least 8 mm. Self-adhesive tape according to one of the preceding claims, characterized in that the adhesive tape ( 1 . 5 ) has a maximum width of 80 mm. Self-adhesive tape according to one of the preceding claims, characterized in that the adhesive tape ( 1 . 5 ) has a width between 10 and 40 mm. Self-adhesive tape according to one of the preceding claims, characterized in that the adhesive tape ( 1 . 5 ) has a width between 15 and 25 mm. Self-adhesive tape according to one of the preceding claims, characterized in that the adhesive tape ( 1 . 5 ) is torn off. Self-adhesive tape according to claim 15, characterized in that in the adhesive tape fibers ( 11 ) are arranged. Self-adhesive tape according to claim 16, characterized in that in the adhesive tape textile fibers ( 11 ) are arranged. Self-adhesive tape according to one of the preceding claims, characterized in that the adhesive tape ( 1 . 5 ) is laminated on one or both sides with a non-stick coated release liner. Self-adhesive tape according to claim 18, characterized in that a non-stick coated paper separator liner is provided as a release liner. Self-adhesive tape according to one of the preceding claims, characterized in that the adhesive tape ( 1 . 5 ) is in roll form. Self-adhesive tape according to one of the preceding claims, characterized in that the adhesive tape ( 1 . 5 ) can be arranged on a roll or spool. Self-adhesive tape according to one of the preceding claims, characterized in that the adhesive tape ( 1 . 5 ) can be arranged on a spool with one or two flanges. Self-adhesive tape according to one of the preceding claims, characterized in that in the case of the adhesive tape ( 1 . 5 ) is provided laterally at least one non-stick coated masking paper. Self-adhesive tape according to one of the preceding claims, characterized in that the adhesive tape ( 1 . 5 ) is designed processable with a rolling device.

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