DE2332758C2 - Self-adhesive material - Google Patents

Description

The invention relates to a self-adhesive material, consisting of a self-adhesive film or layer, which lies on a carrier film

The self-adhesive film of the layer should be na.-r ± n

Af'.i'iii «vyr titr"'' iuitrl-.iiit au srmn Cis-Kaumm. Ve a smooth Oberiaciie julwesst, 3eispie! Swe: tc .ml = nc polished glass tarpaulin, a plastic bestei ^ c plate or a siah 'piarte and>de> - zJ

ne glass plate and paper onr.e add-on (C.eces..net can be glued on. In addition, the self-contained Foil or layer can be stuck on repeatedly and removed again from the surface can be.

From DE-OS 21 04 370 a process for He ^r position of film-forming latexes from a graft polymer by emulsion polymerization is known in which a vinyl acetate-ethylene copolymerizate with vinyl chloride in the presence of a water-soluble polymerization is polymerized. The latices obtained in this way are used as binders for paints, as adhesives on paper surfaces and as adhesives in the traditional sense. The use of such graft polymers as self-adhesive films or layers is not addressed. Furthermore, from DE-OS 15 94 062 the production of pressure-sensitive adhesive layers on paper, fabric, tile and film substrates is known. A polyvinyl chloride powder with a plasticizer component leading to adhesive bonding is made into a paste and applied to the carrier material and heat-gelled. There are 100 to 400 parts by weight of plasticizer for every 100 parts by weight of polyvinyl chloride. By adding such a large amount of plasticizer there is a risk that the plasticizer will penetrate the surface of plastic objects, so that their surface is impaired. Silencing properties on micro-rough surfaces cannot be achieved in this way. In addition, there is a risk that the residues of the adhesive layer will remain on the bonded objects when they are removed again.

The object of the invention is therefore to create a self-adhesive material of the type mentioned at the beginning, in which the self-adhesive film or layer on an object with a smooth surface or on a Object with a micro-roughened surface without additional adhesives can be stuck on, with repeated peeling and resurgence is possible. without discoloration or soiling of the surface or tearing occurs.

This object is achieved according to the invention by the features specified in claim I. Advantageous further developments of the invention are specified in the subclaims.

Overall advantages of the invention are that the self-adhesive material does not allow the plasticizer to penetrate the surface of the stuck Object or discoloration or crack formation the surface of the object. The% further shows the self-adhesive material if it rolled up or stacked, no cold flow in Direction towards the edge of the role or the slapcl. the Adhesive strength is also achieved at room temperature decreased.

The self-adhesive material can, for example, as Sticky notes, or as a protective cover. The like. Can be used,

The invention is illustrated in connection with preferred exemplary embodiments with the aid of the accompanying drawings explained. It shows

Fig. I is an enlarged cross-section of a self-adhesive Materialsund · j

Figs. 2 and 3 show an enlarged cross-section of a another embodiment of the self-adhesive material.

In FIG. 1 is designed as a release paper 3 Carrier film, which has an iti peel layer 2 on a base paper 1, with a self-adhesive Layer or film 4 coated so that a self-adhesive material 11 is formed, depending on the In use, patterns 6 and 7 are printed or raised. π

In FIG. 2 the release paper 3 is coated with the release layer 2 on a base paper 1 with a self-adhesive layer or film 4. A cover sheet 5, with or without an adhesive, is placed on the self-adhesive layer or film 4. 2 "This is another embodiment of a self-adhesive material 12 is formed. The patterns 6 and 7 are located on the cover sheet 5 and are either printed or embossed, depending on the intended use.

When using the self-adhesive material 11 and 12, self-adhesive sheets 8, 9 of the Release paper 3 peeled off and stuck to the surface of an object.

In Fig. 3 is a self-adhesive layer or jo film 4 on the cover sheet 5 without additional adhesive upset. This results in a further embodiment of a self-adhesive material 13. The self-adhesive material 13 results in a self-adhesive sheet 10 which is used as such J5 will.

The base paper I, which is used for the release paper 3 and on the surface of which the release agent is applied, contains a paper with a smooth surface, for example a paper coated on one side with M a cover material or with clay, a tracing paper, a parchment paper, wood-free paper and Art paper. The release agents for the release layer 2 contain synthetic resins such as polyethylene, polypropylene. Polyamide, saturated or unsaturated polyester resins. Urea alkyd chloride. Phonol resin and silicone resin. Such release agents are applied to the base paper with or without an edge layer, such as polyvinyl alcohol. Starch and carboxymethyl cellulose.

As mentioned above, the graft polymer is made with the grafted vinyl chloride monomer used for the self-adhesive layer or film 4 according to the invention. The graft polymer is used alone or as a mixture, the mixture of two or more of the substances EVA / VC Graft polymer. Polyvinyl ether / vinyl chloride graft polymer and polyacrylic ester / vinyl chloride graft polymer consists. Of these graft polymers, the EVA'VC graft polymer is preferred for the self-adhesive layer or film 4. The weight ratio the vinyl chloride to the EVA copolymer in this EVA / VC graft polymer is 20 to 80; 80 to 20, while that from Ethylefi to vinyl acetate 20 to 60: 80 to 40. Furthermore, the relationship is from vinyl chloride to EVA copolymer is preferably 40 up to 60:60 to 40, while that of ethylene to vinyl acetate is 30 to 60: 70 to 40,

These graft polymers are applied to the release paper 3 or the cover sheet 5 independently, so that a self-adhesive material is obtained. However, if these graft polymers are used with a plasticizer, the self-adhesive film has a higher adhesive strength than a graft polymer alone. Any plasticizer that is known in the field of polyvinyl chloride conversion and is compatible with the aforementioned graft polymer can be used for this purpose. The plasticizer can be used alone or in admixture and can be selected from various liquid organic compounds. Typical examples of this are phthalates, for example ditutyl phthalate, di-n-octyl phthalate, di-iso-octyl phthalate and di (2-ethylhexyl) phthalate: dibasic acid esters such as di (2-ethylhexyl) adipate, di (2-eth>) Ihexyl) sebacate (sebacic acid ester) and di (2-ethylhexyl) azelate: phosphates, for example tri (2-ether> lhexyl) phosphate. Diphenyl-2-ethylhexyl phosphate and trif-enyl phosphate; Polyesters, for example Pol ropylenauip; t (adipic acid ester) and polypropylene sebacal (sebacic acid ester): Butylphthorylbutylglyculat and Methylucetyinzinolat. Such plasticizers can be mixed with the graft polymer in small amounts. In order to obtain an optimal result, the plasticizer is ^{mixed with the graft polymer in a ratio of 5 parts by weight or more, based on a 1} to 100 parts of the graft polymer. For the self-adhesive material that is to be adhered to a finely roughened (micro-roughened) surface, the plasticizer is used in a ratio of 20 parts by weight or more, based on 100 parts by weight of the graft polymer. mixed in. If more than 100 parts are added of the plasticizer for 100 parts of the Pfropfpolymensa.es, the plasticizer migrates η the surface of the object, from which Verfä ^r advertising results. The wanderlig ces softening is different, however, and depends on the graft polymer and the conditions under which the self-adhesive material is used. The maximum amount of plasticizer must therefore be determined taking into account the graft polymer and the conditions under which the self-adhesive material is used. If, for example, the self-adhesive material is to be used at a room temperature of up to 50 ° C, the maximum amount of plasticizer is 75 parts by weight of an EVA / VC graft polymer. 100 parts in the polyvinylether / VC graft polymer and 60 parts in the polyacrylic ester / If, on the other hand, the self-adhesive material is used at a temperature above 50 ° C., in particular successively at 60 ° C., the amount of plasticizer in the self-adhesive composition must be below 20 parts because of migration The (micro-roughened) surface of an object is to be glued on, the plasticizer is used in conjunction with a tackifying agent. The self-adhesive composition then consists of the graft polymer, the plasticizer and the tackifying agent. The tackifying agent should preferably be combined with the FlYopfpolymcrisat and the plasticizer be compatible. However, a tackifying agent can also be used, either with the graft polymer or with the plasticizer

is tolerable. The tackifying agent used in the invention contains rosin, modified resin and its derivatives, for example glycerol ester rosin, penlacrythritol ester rosin, Polyterpene rosin, modified terpene such as terpene phenol, aliphatic Hydrogen resin and phenolic resin such as Alkyl phenolic resin, modified phenolic resin. Such tackifying agents are used alone or in a mixture used. The amount of in Tackifying agents have a ratio of 5 to 200 parts for 100 parts of the graft polymer. However, the amount of mixture must depend on. the type of graft polymer to be determined. For example, there are 5 to 150 parts in one ι ϊ EVA / VC graft polymer, 40 to 200 parts in a polyvinyl ether / VC graft polymer and 5 to 120 Parts in a polyacrylic ester / VC graft polymer for Use. The plasticizer for the self-adhesive

is the same as described above. To an optimal To obtain result, the amount of plasticizer used is that of the tackifying agent is used, preferably 5 parts or more. The maximum amount of plasticizer is the same as Öbenstchend in connection with the self-adhesive composition, which the graft polymer and contains the plasticizer.

The self-adhesive film according to the invention can be a heat stabilizer, a lubricant, a UV jo Contain absorber, a pigment and the like.

Examples of the heat stabilizer are stearates, such as dibasic lead stearate, zinc, calcium and barium stearate; Dibutyltin di-maleai, dibutyltin dilaurate and epoxidized soybean oil. The stabilizer prevents the self-adhesive film from degrading during extrusion and calendering or when applying or coating as a solution.

Examples of the lubricants are stearylamide, methylene-bis-stearylamide, Paraffin wax. Stearic acid and glycerol monooleate. Metal soaps such as lead, cadmium, Zinc stearate have the properties of both heat stabilizer and lubricant, so that they can also be used as lubricants. Examples of the pigment are titanium dioxide, Aluminum hydroxide. Calcium carbonate and the like

The self-adhesive composition is applied to the release paper 3 or the cover sheet 5 in various ways such as calendering, extrusion molding or coating. When calendering or extrusion molding is used, the self-adhesive composition is milled or kneaded in a roller mill. Then, a selbstklcbender film of 50 μ to 200 μ thickness is at a temperature of 100 ° C to 140 ⁰ C is formed and then applied as a layer on the Abziehpapicr 3 and the cover sheet 5 when the coating compositions, for example, air brushes. Reversing rollers, doctor blades are used, is applied seibstklebende the composition in the form of a solution on the release paper or on the base sheet and dried at a temperature of 100 ⁰ C to 140 ° C, wherein the self-adhesive composition is gleichzeitis gelled. Covering by means of a solution is preferably used when the self-adhesive film is to have a thickness of less than 50 μ.

Examples of the solvent used in such a solution for coating are cyclohexanone, Tetrahydrofuran, dioxane, benzene, mono- and di-chlorobenzene, nitrobenzene. Toluene, xylene, dimethylformamide, ethylene dichloride, trichlorethylene, tetrachlorethylene, Acetone, methyl ethyl ketone, methyl acetate, ethyl acetate, butyl acetate and cellulose acetate. The amount of The solvent used to prepare the coating solution is 300 to 1000 parts by weight per 100 parts of graft polymer, with less solvent giving a more viscous solution, which Difficulty in the coating work, while a larger amount of solvent one causes thinner solution, which has only low film-forming property.

The thickness of the self-adhesive film Peel-off paper or on your cover sheet is made, is preferably 10 to 200 μ; a thinner film is not practical in practice because of the poor adhesive strength advantageous and a film thicker than 200 μ does not guarantee any further advantages.

In this way, the self-adhesive material according to the invention is obtained, as shown in FIGS. 1 and 3 is shown. The self-adhesive material in Fig. 1 can be printed and / or it can in Depending on the intended use, raised areas on the self-adhesive with conventional means Film. In use, the self-adhesive sheet 8 is peeled off from the release paper 3 or glued stripped to the surface of the object. Ir the Fig. 3 will be the self-adhesive Material for the self-adhesive sheet 10, for protection or covering, as shown. is used.

On the other hand, if the self-adhesive material also has an improved printability and To have treatability, the self-adhesive composition is coated on the release paper or covered. A cover sheet, for example paper, is then applied to the self-adhesive film regenerated cellulose film or cellulose scfolic, woven or non-woven cloth. Art paper, a metal foil or a synthetic resin sheet containing a thermoplastic synthetic resin such as vinyl chloride resin, Acrylic resin polyamide. Polystyrene, saturated polyester and the like applied as a layer. If paper, cloth or it is a resin film that has poor adhesive properties necessary to use a specific glue or adhesive and / or a specific one Treatment, for example a surface oxidation, to carry out. Such adhesives are of the solution type and examples thereof are nitrile, polychloroprene. Polyvinyl acetate, epoxy resin and polyurethane resin. They can also be of the emulsion type. Examples of these are ethylene / vinyl acetate, copolymers and vinyl chloride / vinyl acetate copolymer. the Solution type adhesives may contain a crosslinking agent such as toluene diisocyanate to to increase the adhesive strength.

In this way, a self-adhesive material according to the invention is obtained, as shown in FIG is shown. This material can be printed on and / or it can be used in a conventional manner Depending on the intended use, surveys should be worked out on the cover sheet. The self-loving one Sheet 9 is peeled off the release paper 3 and adhered to the surface of an object.

Furthermore, the invention is to be explained in more detail with the aid of the following examples.

example Tabel

A self-adhesive composition contains the following ingredients:

Graft polymer (50 parts

desAlhylnvinyiacetat-

Kopofymerisates (55/45)

grafted with 50 parts

of a vinyl chloride monomer)

Stearic acid

Cadmium stearate

Barium stearate

Di-n-octyl phthalate

Epoxidized soybean oil

Parts by weight

iOO

0.7
0.7
20th
3

The composition was ingredients on a roller mill

Deispiclc No.
3 4

(Weight ¹
parts)

(Weight (rush)

100

100

Kalandricranordnungbei about 110 ⁰ C to 12O ⁰ μ was formed to a C selbstklcbcnden layer having a thickness of 100 and applied as a layer to a plastifiziefle polyvinyl chloride sheet containing a plasticizer 20% of a thickness of 80 s. Then, a release paper having an unsaturated polyester resin layer was applied to the self-adhesive layer, so that a self-adhesive material was obtained. The properties of this self-adhesive material are shown in Table IV below.

Example 2

A self-adhesive composition consisted of the following components:

40

■ »5 ·

Parts by weight

Graft polymer (50 parts
of an ethylene vinyl acetate copolymer (55/45)
grafted with 50 parts

of a vinyl chloride monomer) 100

Stearic acid 13

Cadmium searate 0.7

Barium stearate 0.7

Di-n-octyl phthalate 20

Epoxidized soybean oil 3

Titanium dioxide 6.5

Modified rosin 10

'The composition was kneaded in a ball mill and molded under pressure in a Kaiandrieranordnung at about 120 ° C to 130 ⁰ C to form a layer of 100 μ thickness, and then contained in a 100 μ pigmented and plastifizicrtc polyvinyl chloride sheet, the plasticizer is 25%, layered. Then, the release paper having an unsaturated polyester resin layer was laminated on the self-adhesive layer, whereby the self-adhesive material was obtained. This self-adhesive material was printed on the polyvinyl chloride film. ω

The properties of the self-adhesive material are shown in Table IV below.

Examples 3 and 4

From the in the following table I visible components coating solutions prepared:

60 60 100 - 250 250 150 150

Graft polymer (70 parts
ίο an Athylenvinylacetatkapolymcrisntes (45/55) grafted with 30 parts of a
Vinyl chloride monomers)

Dibutylphlhalut

Hydrogenated rosin ester
Methyl ethyl ketone
Tetrahydrofuran

A pigmented and plasticized polyvinyl chloride film (100 μ thick) was with 50 g / m ² (wet) one

Coating solution by means of a return roller device coated, and then the coated film was dried. Then a release paper with a Silicone resin layer laminated on the coated film. The properties of the self-adhesive thus obtained

jö materials are listed in Table IV below shown.

35

Example 5

A self-adhesive composition contained the following ingredients:

Parts by weight

Polyvinyl ether / polyvinyl chloride

Graft polymer 100

Stearic acid 1.3

Cadmium stearal 0.7

Barium stearate 0.7

Di-n-octyl phthalate 20

Pentearyihritol ester rosin 40 '

The composition was kneaded in a ball mill and in a μ Kaiandrieranordnung into a layer having a thickness of 100 was pressed at 110 ⁰ C to 120 ⁰ C. The composition was then laminated to a plasticized polyvinyl chloride film containing a plasticizer 20% with a thickness of 80 μ. Then, a release paper having an unsaturated polyester resin layer was laminated on the self-adhesive layer, so that a self-adhesive material was obtained. The properties of this self-adhesive material are shown in Table IV below.

Examples 6 and 7

There have been coating solutions from the following Components, which are shown in Table II, produced:

Table II

Coating solution

Example No. 6 7

(Weight '(weight styles) parts)

Polyvinyl ether / polyvinyl 100 100

chloride graft polymer

Dibulyl phthalate 100 60

Modified rosin 200 100

Methyl ethyl ketone 300 300

Tetrahydrofuran 100 100

Toluene 100 100

A release paper with a silicone resin layer was coated with 150 g / m * (wet) of the coating solutions by means of a Rücklsuis'ji '.'.- alzvorrichiijng bcschfchic-i and the be layered paper was dried. Then a plasticized polyvinyl chloride film (contained 30 parts Plasticizer for 100 parts of polyvinyl chloride resin) laminated to the coated paper, the properties of the self-adhesive materials thus obtained are in Table IV below.

Example 8

A self-adhesive composition contained the following ingredients:

Parts by weight

Polyacrylic ester / polyvinyl chloride

Graft polymer 100

Stearic acid 13

Cadmium clearate 0.7

Barium stearate 0.7

Di-n-octyl phthalate 5

Modified rosin 5

The composition was kneaded in a ball mill and ^{pressed in a calendering device at about UO 0} C to 120 ⁰ C to form a layer with a thickness of ίθθμ and then laminated onto a plasticized polyvinyl chloride film (contained a plasticizer 20%) with a thickness of 80μ. Then, a release paper having an unsaturated polyester resin layer was laminated on the self-adhesive layer, so that a self-adhesive material was obtained. The properties of this self-adhesive material are shown in Table IV below.

Examples 9 and 10

Coating solutions were prepared from the following ingredients listed in Table III shown are:

Table III

Components

JO

Components Examples No.
9 10

(Weight parts)

(Gcwichls- (cile)

Pentaerythritolstcr-Tefpentinhafz

Methyl ethyl ketone

Tetrahydrofuran

Tcluene

120

220
320
220

200
140
100

A 100 µm-thick release paper having a silicone resin ^{layer was coated with 150 g / m 2} (wet) of a coating solution by means of a return roller, and then the coated paper was dried. On the coated paper, a plasticized polyvinyl

2Vi nylciiluriufuiie (cnihicii 30 Tciie plasticizer for 100 parts of polyvinyl chloride resin) laminated on. The properties of the self-adhesive material thus obtained are shown in Table IV below.

^2S example 11

A self-adhesive composition contained the following ingredients:

40 graft polymer (30 parts
of an ethylene vinyl acetate copolymer (30/70)
grafted with 70 parts
of a vinyl chloride monomer)
Stearic acid
Cadmium stearate '
Barium clearate
Di-n-octyl phthalate
Epoxidized soybean oil

Parts by weight

100
1.3
0.7
0.7
20th
3

The composition was kneaded in a ball mill and pressed μ in a Kalandriervorrichlung at about 110 ⁰ C to 12O ⁰ C to form a layer having a thickness of 100 and then applied to a plasticized polyvinyl chloride (containing a plasticizer 20%) with a thickness of 80 μ laminated . Then became? a release paper with an unsaturated polyester resin layer is laminated onto the self-adhesive layer and

thus a self-adhesive material is obtained. The properties of this self-adhesive material are in Table IV as shown below.

Example 12

A coating solution was prepared from the following ingredients:

Parts by weight

Examples No.-

9 10

(Parts by weight (parts by weight))

Polyacrylic ester / polyvinyl 100 100

chloride graft polymer

Di-n-octyl phthalate 60 60

65

Graft polymer (45 parts 100 of an ethylene vinyl acetate 35 Copolymers (30/70) 35 grafted with 55 parts 100] of a vinyl chloride monomer) ~ "' 200 i Di-n-octyl phthalate 100 Dibutyl phthalate Tetrahydrofuran Methyl ethyl ketone toluene

A 100 μm thick pigmented and plasticized polyvinyl chloride film was ^{coated with 50 g / m 2} (wet) of a coating solution by means of a return roller device and then dried. A release paper with a silicone resin layer was then laminated onto the coated film.

The properties of the self-adhesive material thus obtained are shown in Table IV below.

Example 13

A self-adhesive composition contained the following ingredients:

Weight parts

Graft polymer (30 parts

of an ethylene vinyl acetate

Copolymers (60/40)

grafted with 70 parts

of a vinyl chloride monomer) 100

Stearic acid 1.3

Cadmium stearate 0.7

Barium stearate 0.7

Di-n-octylphlhalal 5

Titanium dioxide 6.5

Modified rosin 5

The coating solution; was used as in example \ i and a self-adhesive material was obtained in this way.

The properties of this self-adhesive painting are shown in Table IV below.

example

A self-adhesive composition contained the following ingredients:

IO

15th

20th

The composition was used as in Example II and was thus a self-adhesive material obtain. The properties of this self-adhesive material are shown in Table IV below

Example 14

A coating solution was prepared from the following ingredients:

Weight parts

Graft polymer

(the same as in Example 13) 100

Di-n-octyl phthalate 30

Dibutyl phthalate 40

Modified rosin 100

Tetrahydrofuran 200

Methyl ethyl ketone 250

Cyclohexanone 150

Graft polymer (45 parts of an ethylene vinyl acetate copolymer (60/40) grafted with 55 parts of a vinyl chloride monomer) stearic acid
Cadmium stearate barium stearate
Di-n-octyl phthalate

Parts by weight

100 1.3 0 ⁷ 0.7

20th

The composition was applied as in the example and thus a self-adhesive material obtain.

The properties of this self-adhesive material are also included in Table IV.

example

A coating solution was prepared from the following ingredients:

Parts by weight

Graft polymer (same as in Example 15) di-n-octyl phthalate dibutyl phthalate Modified terperitin resin tetrahydrofuran methyl ethyl ketone Ethyl acetate

The coating solution was applied as in Example 12 and thereby became a self-adhesive Material received.

The properties of this self-adhesive material are shown in Table IV. . ^

Table IV Example no.

Adhesiveness

Adhesive strength Accelerated migration of the plasticizer

Polystyrene polycarbonate

1
2
3
4th
5
6th
7th
8th
9
10
U

20 cm

13 cm

2.5 cm

5.0 cm

20 cm

5 cm

10 centimeters

15 cm

2 cm

8 cm

> 20cm

15 g / 2.5 cm

50 g / 2.5 cm

450 g / 2.5 cm

70 g / 2.5 cm

10 g / 2.5 cm

250 g / 2.5 cm

120 g / 2.5 cm

100 g / 2.5 cm

400 g / 2.5 cm

170 g / 2.5 cm

3 g / 3 cm OO

, O O O O O

- O O O

O O O O O O O O O O O

Away «.etziine

No.

Adhesiveness

Adhesive force

12th
13th
14th
15th
16

Comparative example 1

Comparative example 2

Here mean:

3 cm

> 20 cm

1 cm

7 cm

l> cm

> 20cm

1.0 cm

100 g / 3 cm

2 g / 3 cm

120 g / 3 cm

20 g / 3 cm

500 g / 3 cm

3 g / 3 cm

Accelerated Hike Polycarbonate of the plasticizer O Polystyrene O O O O O O O O Δ O X

1500 g / 3 cn

1. Adhesion:

A self-adhesive sheet is peeled off the release paper. The self-adhesive layer diei-'s The sheet is placed on a glass plate which is inclined upwards at an angle of Γ. then an iron ball with a diameter of 1.0 cm and a weight of 5.5 g over the self-adhesive layer, which the test piece if. rolled. The ball is removed 5 cm from the upper end of the test piece rolled on jo and it becomes the distance that the iron ball is on has covered the test piece. measured.

2. Adhesion:

A test sample measuring 2.5 cm 15 cm or 3 cm χ 15 cm and the ^{Selbstkle- J5} ber.de sheet are peeled off from the paper and subjected to the following test. The specimen is placed on a stainless steel and pressed on by means of a rubber roller weighing 1.5 kg, the rubber tube being rolled back and forth once. Then 3 cm of the specimen is peeled off the stainless steel. The sample piece and the plate are then attached to the upper and lower bracket of a "Tensilon" tester and the sample piece is pulled off at an angle of 180, namely at a speed of 200 mmS'min. and measured the resistance when drawing off.

3. Accelerated migration of the plasticizer: w F. in self-adhesive sheet is made of a release paper peeled off and on a plastic plate, for example made of polystyrene resin or polycarbonate resin. glued. The sample thus obtained is then placed in an atmosphere for 50 hours Has a temperature of 50 ° C.

After the self-adhesive sheet is peeled off. It can be determined by visual observation whether the plasticizer in the self-sticking sheet has penetrated or migrated into the plastic plate, namely by determining the cloudiness, the regression and the discoloration of the parts which have adversely affected.
The results that were observed here can be divided into four classes as follows: traces of plasticizer

are left behind O

some proportions of the plasticizer

are left behind Δ

most of the plasticizer

is left behind χ

4. Comparative example 1

A coating solution was prepared from the following ingredients:

Weight parts

Polyvinyl chloride
Di-n-octyl phthalate
Tetrahydrofuran
Methyl ethyl ketone

100

60

150

250

■ 15 The Oberzugslösung as has been stated in Example 3 the application and thereby erhallen a self-adhesive material.

5. Comparative example 2 shows the properties of a Adhesive tape with an acrylic resin layer.

Example 17

A composition was made from the following ingredients:

Gcwichlsieilc

Graft polymer (50 parts

of an ethylene vinyl acetal

Copolymers (55/45)

grafted with 50 parts

of a vinyl chloride monomer) 100

Stearic acid 13

Kddmium stearate 0.7

Barium stearate 0.7

No plasticizer
is lagging behind

The composition was kneaded in a ball mill and pressed in a calender device at 110 ° C. to 120 ° C. to form a layer 100 μm thick and laminated onto a plaslificicnc pglyvinyl chloride film (containing 20% plasticizer) 80 μm thick. Then, the peelable paper was laminated with an unsaturated polyester resin layer on the self-adhesive layer, so that a self-adhesive material was obtained. The properties of this self-adhesive material are shown in Table V below.

Example 18

A coating solution became the following Components manufactured:

Weight parts

Graft polymer

(same as in example 17)

Di-n-octyl phihalate

Dibuiylphlhalal

Methyl ethyl ketone

Tetrahydrofuran

toluene

100

10

200

100

100

A 100 µ thick release paper having a silicone resin ^{layer was coated with 150 g / m 2} (wet) of the coating solution by means of a return roller, and the coated paper was dried. A plasticized polyvinyl chloride film (contained 30% plasticizer) was then laminated onto the coated paper. The properties of the self-adhesive material obtained in this way are shown in Table V.

Example 19

One composition contained the following ingredients:

Graft polymerate (30 parts
of an ethylene vinyl acetate copolymer (55/45)
grafted with 70 parts
of a vinyl chloride monomer)
To you. octylphalate

Weight parts

100
9

30th

Dibutyl phthalate
Stearic acid
Cadmium stearate
Barium stearate

10

0.7
0.7

The composition was kneaded in a ball mill and ^{pressed in a calendering device at 110 °} C. to 120 ^° C. to form a layer 100 μ thick and then laminated onto a plasticized polyvinyl chloride film (80 μ thick), whereby a self-adhesive material was obtained. The properties of this self-adhesive material are shown in Table V.

Example 20

A coating solution was prepared from the following ingredients:

Gewichjs-reile

Graft polymer (70 parts
of an ethylene vinyl acetate copolymer (55/45)
grafted with 30 parts
of a vinyl chloride monomer) 100

Methyl ethyl ketone 200

Tetrahydrofuran 100

Toluene 100

A release paper having a silicone resin ^{layer was coated with 150 g / m 2} (wet) of the coating solution by means of a rewind roller and dried. The self-adhesive material thus obtained was printed on the self-adhesive layer.

The properties of this material are in the table V shown.

Table V Example no. Bond strength bond strength

Flexibility

(cm)

(g / 3 cm)

Residual pollution d. Glue

Accelerated plasticizer migration

Polystyrene

17th 13th 18th 5 17th 20th 20th 5 Comparative
bcispicl 3 K Comparative
example 4 O Esbudcten:

20th
1800

O
O
O
O
χ

O
O
O
O
χ

O
O
O
O
χ

Polyvinyl Poly- chloride carbonal O O O O O O ' O O X X

Adhesion:

A self-adhesive sheet is made from a release paper deducted. The self-closing layer of this sheet is directed upwards onto one so-called »Dagracc Rolling Tester«, Ditfin becomes an iron ball with a diameter of 0.5 cm and a weight of 1.05 g on the self-adhesive! Layer rolled, from a point 5 cm from the upper end of the PfobcnslüGkcs! is. The route the Ice ball atlf the trial is back measured.

b0

2. Adhesion:

The same procedure was used here as described in connection with Table IV has been described.

3, Residual pollution from glue
on the object;

A self-signed Blaif is given by a badge paper peeled off and on a glass plate or a AcrylbutadicnsiyroI'HarzpIaltc glued on, The so The specimen obtained is placed in an oven for 200 hours which is set to a temperature νοη 6O'C is kept after taking it out

230217/17?

The test specimen is cooled in the oven at room temperature for one hour. Then the self-adhesive Gently peeled off the sheet and the amount of adhesive remaining on the item is observed visually. When removing, ΐ at the same time the peelability was tested.

Peelability

easily removable O

not removable · χ ίο

Dirty glue residue
on the object "

no O

Residues χ

4. Accelerated migration of the plasticizer:

A self-adhesive sheet is peeled off from a release paper and stuck on plastic sheets such as polystyrene resin, polyvinyl chloride resin and polycarbonate resin. The specimens so obtained are for 300 hours, placed in a so-called "weather meter" which is set at a temperature of 60 ⁰ C. After the self-adhesive sheet has been removed, it is determined by visual observation whether the plasticizer in the self-adhesive sheet is in the plastic

has penetrated or migrated, namely by the turbidity, the regression and the discoloration the parts to which the adhesive has stuck can be determined. The results fall into two classes, which are characterized as follows:

No residue of plasticizer O
Most of the plasticizer
remains behind χ

Comparative example 3 is an adhesive tape with a gum layer.

Comparative example 4:

A coating solution was prepared from the following ingredients:

Weight lines Polyvinyl chloride resin 100 Di-n-octyl phthalate CT) Dibutyl phthalate 10 Methyl ethyl ketone 200 Tetrahydrofuran 100 toluene 100

The coating solution was applied as in Example 18, creating an adhesive material was obtained.

Claims (9)

Patent claims: Γ. Mi'lviiVieHefiffes «a« eral. ^H töheTitf au? a self-adhesive film or layer that lies on a carrier film, characterized. that d.tf bclbstHeijend "f'jtie or Sduch" Pi '.- opff /' / iyrfiiriiat or / and polyvinyl ether / vinyl chloride graft polymer or / and polyacrylic ester / vinyl chloride graft polymer, a plasticizer and, if applicable, customary additives 2. Self-adhesive material according to claim 1, characterized in that the self-adhesive film or layer of 100 parts by weight of ethylene vinyl acetate copolymer / Vinyl chloride graft polymer and 1-75 parts by weight of plasticizer and, if necessary, customary additives. 3. Self-adhesive material according to claim 1, characterized in that the self-adhesive Foil or shoe made of 100 parts by weight of polyvinyl ether / vinyl chloride graft polymer and 1 - 100 parts by weight of plasticizer and, if necessary, customary additives 4. Self-adhesive material according to claim 1, characterized in that the self-adhesive Film or layer made of 100 parts by weight of polyacrylic ester / yinyichloride graft polymer and 1-60 parts by weight of plasticizer and, if necessary, customary additives. 5. Self-adhesive material according to claim 2, characterized in that the weight ratio of vinyl chloride to ethylene Wnjlacetat-Kopo-Iymerisat in Äthylenvinyla ^ efat-Kopolymerisai / vinyl chloride graft polymer 20- i0: 80-20 be-Irägl. while that of ethylene to vinyl acetate 20 Ί0 KO 40hriiiiKl ι. '■ <llj \ iV.ltίιπιιΙγη MaliTi.il according to one of the preceding claims, characterized in that the self-adhesive composition contains a tackifier in addition to the graft polymer and the plasticizer 7. Self-adhesive material according to claim 6, characterized in that the self-adhesive Composition 100 parts by weight of ethylene vinyl acetate copolymer / vinyl chloride graft polymer. 5-75 parts by weight of plasticizer and 5-150 Contains parts by weight of tackifier. 8. Self-adhesive material according to claim 6. characterized in that the self-adhesive composition 100 parts by weight of polyvinyl ether / vinyl chloride graft polymer, Contains 5-100 parts by weight plasticizer and 40-200 parts by weight plasticizer. 9. Self-adhesive material according to claim 6, characterized in that the self-adhesive composition 100 parts by weight of polyacrylic / vinyl chloride graft polymer, 5-60 parts by weight of plasticizer and 5- 120 parts by weight to sound makers.