CA3099606A1 - Packaging material and method for its production - Google Patents
Packaging material and method for its production Download PDFInfo
- Publication number
- CA3099606A1 CA3099606A1 CA3099606A CA3099606A CA3099606A1 CA 3099606 A1 CA3099606 A1 CA 3099606A1 CA 3099606 A CA3099606 A CA 3099606A CA 3099606 A CA3099606 A CA 3099606A CA 3099606 A1 CA3099606 A1 CA 3099606A1
- Authority
- CA
- Canada
- Prior art keywords
- film
- packaging material
- fringes
- adhesive
- net
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
Links
- 239000005022 packaging material Substances 0.000 title claims abstract description 35
- 238000004519 manufacturing process Methods 0.000 title claims description 9
- 238000000034 method Methods 0.000 title claims description 6
- 229920003023 plastic Polymers 0.000 claims abstract description 30
- 239000004033 plastic Substances 0.000 claims abstract description 30
- 239000012790 adhesive layer Substances 0.000 claims abstract description 7
- 239000000853 adhesive Substances 0.000 claims description 14
- 230000001070 adhesive effect Effects 0.000 claims description 13
- 239000005038 ethylene vinyl acetate Substances 0.000 claims description 5
- 229920001200 poly(ethylene-vinyl acetate) Polymers 0.000 claims description 5
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 claims description 4
- 229920001903 high density polyethylene Polymers 0.000 claims description 4
- 239000004700 high-density polyethylene Substances 0.000 claims description 4
- 229920001684 low density polyethylene Polymers 0.000 claims description 4
- 239000004702 low-density polyethylene Substances 0.000 claims description 4
- 229920000915 polyvinyl chloride Polymers 0.000 claims description 4
- 239000004800 polyvinyl chloride Substances 0.000 claims description 4
- 239000002313 adhesive film Substances 0.000 claims description 2
- 229920000092 linear low density polyethylene Polymers 0.000 claims 2
- 239000004707 linear low-density polyethylene Substances 0.000 claims 2
- 239000004698 Polyethylene Substances 0.000 description 6
- -1 polyethylene Polymers 0.000 description 6
- 229920000573 polyethylene Polymers 0.000 description 6
- DQXBYHZEEUGOBF-UHFFFAOYSA-N but-3-enoic acid;ethene Chemical compound C=C.OC(=O)CC=C DQXBYHZEEUGOBF-UHFFFAOYSA-N 0.000 description 4
- 238000004804 winding Methods 0.000 description 3
- 239000002759 woven fabric Substances 0.000 description 3
- 229920000098 polyolefin Polymers 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000009940 knitting Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
- B32B7/04—Interconnection of layers
- B32B7/12—Interconnection of layers using interposed adhesives or interposed materials with bonding properties
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/12—Layered products comprising a layer of synthetic resin next to a fibrous or filamentary layer
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/30—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers
- B32B27/304—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers comprising vinyl halide (co)polymers, e.g. PVC, PVDC, PVF, PVDF
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/30—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers
- B32B27/306—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers comprising vinyl acetate or vinyl alcohol (co)polymers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/32—Layered products comprising a layer of synthetic resin comprising polyolefins
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
- B32B5/02—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer
- B32B5/028—Net structure, e.g. spaced apart filaments bonded at the crossing points
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
- B32B5/02—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer
- B32B5/04—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer characterised by a layer being specifically extensible by reason of its structure or arrangement, e.g. by reason of the chemical nature of the fibres or filaments
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
- B32B2262/02—Synthetic macromolecular fibres
- B32B2262/0223—Vinyl resin fibres
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
- B32B2262/02—Synthetic macromolecular fibres
- B32B2262/0223—Vinyl resin fibres
- B32B2262/0238—Vinyl halide, e.g. PVC, PVDC, PVF, PVDF
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
- B32B2262/02—Synthetic macromolecular fibres
- B32B2262/0253—Polyolefin fibres
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/50—Properties of the layers or laminate having particular mechanical properties
- B32B2307/514—Oriented
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2405/00—Adhesive articles, e.g. adhesive tapes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2553/00—Packaging equipment or accessories not otherwise provided for
Abstract
The invention relates to a packaging material comprising a pre-stretched and heat-stabilised elastic film (1) and an elastic plastic net arranged flat on the film, which is connected to the film (1) by means of an adhesive layer applied to the film (1), in such a way that a relative movement of the film (1) and the plastic net in relation to one another is permitted in the event of high tensile stresses.
Description
Packaging material and method for its production The invention relates to a packaging material according to the preamble of claim 1.
Furthermore, the invention relates to a method for the production of the packaging material according to the invention.
A packaging material with a first film and a woven fabric, which are arranged one above the other and are connected together, is known from the applicant's WO
2017/080609. Here, the first film comprises first areas in which the first film is locally stretched and second areas in which the first film is not locally stretched;
the first areas are each arranged between two second areas and run in a first direction, wherein the woven fabric comprises a thread and wherein a part of the thread runs in a direction which intersects the first direction.
In the case of certain applications in which heavy goods are to be packaged, however, the known packaging material can disadvantageously tear at certain points on account of the different high tensile stress between the film and the woven fabric.
Such packaging materials are used to package pallets, agricultural products, refuse etc., so that a high tear strength and protection against weather influences is required. Furthermore, such packaging materials should contain as little plastic as possible, which on the one hand reduces the environmental burden and on the other hand results in more favourable prices for consumers.
The problem of the present invention is to specify a packaging material with low weight relative to its dimensioning and high tear strength in the presence of high tensile stresses. Furthermore, a method for the production of the packaging material according to the invention is to be specified.
This problem is solved by the features of claim 1. A method for the production of the packaging material according to the invention is the subject-matter of claim 8. Further embodiments according to the invention and advantages emerge from the corresponding sub-claims.
Accordingly, a packaging material is proposed, which comprises a pre-stretched and heat-stabilised elastic film and an elastic plastic net arranged flat on the film, in particular a plastic net constituted as a Raschel net, wherein the plastic net is connected to the film by means of an adhesive layer applied on the film, in such a way that a relative movement of the film and the plastic net in relation to one another is permitted in the event of high tensile stresses.
As a result of the pre-stretching of the elastic film, the packaging material advantageously becomes thinner and lighter relative to a predefined length, wherein the effect of the heat stabilisation of the pre-stretched film is that the film does not exhibit any remaining surface stresses. As a result of the concept according to the invention, local excess stresses, which arise at different points of the packaging material, can be uniformly distributed by a relative movement of the net and the film in relation to one another in the event of high tensile stresses, so that tearing of the packaging material is advantageously prevented. This is made possible by the fact that the adhesive is a water-soluble adhesive, for example a food-grade adhesive, which has a low adhesive strength.
Furthermore, as a result of the prevention of local excess stresses, the packaging material can be wound around lightweight and thin winding cores instead of heavy winding cylinders made of pressboard.
For the production of the packaging material according to the invention, the elastic film is pre-stretched to a defined, predetermined degree and then heat-stabilised, wherein an adhesive layer, for example a water-soluble adhesive having a low adhesive strength, is then applied on the pre-stretched film, for example by means of cylinder axes or high-pressure jets. After the pre-stretching of the film, the latter has a residual elasticity of 20%. In a subsequent step, the film and the plastic net are pressed together by means of rollers, so that a packaging material arises, one side of which is constituted as a self-adhesive film covered by a plastic net without necking points. The self-adhesive embodiment also gives rise to the advantage that closing of the packaging material after receiving the goods is simplified.
Furthermore, the invention relates to a method for the production of the packaging material according to the invention.
A packaging material with a first film and a woven fabric, which are arranged one above the other and are connected together, is known from the applicant's WO
2017/080609. Here, the first film comprises first areas in which the first film is locally stretched and second areas in which the first film is not locally stretched;
the first areas are each arranged between two second areas and run in a first direction, wherein the woven fabric comprises a thread and wherein a part of the thread runs in a direction which intersects the first direction.
In the case of certain applications in which heavy goods are to be packaged, however, the known packaging material can disadvantageously tear at certain points on account of the different high tensile stress between the film and the woven fabric.
Such packaging materials are used to package pallets, agricultural products, refuse etc., so that a high tear strength and protection against weather influences is required. Furthermore, such packaging materials should contain as little plastic as possible, which on the one hand reduces the environmental burden and on the other hand results in more favourable prices for consumers.
The problem of the present invention is to specify a packaging material with low weight relative to its dimensioning and high tear strength in the presence of high tensile stresses. Furthermore, a method for the production of the packaging material according to the invention is to be specified.
This problem is solved by the features of claim 1. A method for the production of the packaging material according to the invention is the subject-matter of claim 8. Further embodiments according to the invention and advantages emerge from the corresponding sub-claims.
Accordingly, a packaging material is proposed, which comprises a pre-stretched and heat-stabilised elastic film and an elastic plastic net arranged flat on the film, in particular a plastic net constituted as a Raschel net, wherein the plastic net is connected to the film by means of an adhesive layer applied on the film, in such a way that a relative movement of the film and the plastic net in relation to one another is permitted in the event of high tensile stresses.
As a result of the pre-stretching of the elastic film, the packaging material advantageously becomes thinner and lighter relative to a predefined length, wherein the effect of the heat stabilisation of the pre-stretched film is that the film does not exhibit any remaining surface stresses. As a result of the concept according to the invention, local excess stresses, which arise at different points of the packaging material, can be uniformly distributed by a relative movement of the net and the film in relation to one another in the event of high tensile stresses, so that tearing of the packaging material is advantageously prevented. This is made possible by the fact that the adhesive is a water-soluble adhesive, for example a food-grade adhesive, which has a low adhesive strength.
Furthermore, as a result of the prevention of local excess stresses, the packaging material can be wound around lightweight and thin winding cores instead of heavy winding cylinders made of pressboard.
For the production of the packaging material according to the invention, the elastic film is pre-stretched to a defined, predetermined degree and then heat-stabilised, wherein an adhesive layer, for example a water-soluble adhesive having a low adhesive strength, is then applied on the pre-stretched film, for example by means of cylinder axes or high-pressure jets. After the pre-stretching of the film, the latter has a residual elasticity of 20%. In a subsequent step, the film and the plastic net are pressed together by means of rollers, so that a packaging material arises, one side of which is constituted as a self-adhesive film covered by a plastic net without necking points. The self-adhesive embodiment also gives rise to the advantage that closing of the packaging material after receiving the goods is simplified.
2 The elastic film can be pre-stretched for example to a thickness of 5 pm, wherein the width can be arbitrary, and for example can lie in a range between 40 cm and cm. The elastic film can be produced from LLDPE (linear polyethylene of low density), LDPE (polyethylene of low density), HDPE (polyethylene of high density), VC (polyvinyl chloride), EVA (ethylene vinyl acetate) or from a similar plastic, in particular from any polyolefin, or can comprise the latter.
The plastic net can be produced from polyolefins such as for example LLDPE
(linear polyethylene of low density), LDPE (polyethylene of low density), HDPE
(polyethylene of high density), PVC (polyvinylchloride), EVA (ethylene vinyl acetate) or from a similar plastic or can comprise the latter. Its weight can for example be 2 to 32 g/running metre, wherein the net density can lie for example in a range between 6 needles/inch to 2 inches needle spacing. The width of the net essentially corresponds to the width of the elastic film.
The net can consist of fringes extending in the flow direction of the net (also called warp threads) and weft threads, which connect the fringes thereby forming a zigzag pattern to form a net, which according to the prior art are interwoven with one another, wherein the fringes are each formed from a thread. Furthermore, provision can be made such that all or part of the fringes, in particular the outer fringes, are each formed from two or more threads to increase the strength.
The distance between the fringes can be arbitrary and for example lie in a range between 4.2 and 50.8 mm. The plastic threads used for the fringes can have a thickness from 10 ¨ 60 pm or less.
Furthermore, at least the outer or any fringes can each comprise two or more partial fringes to increase the strength, which are connected to one another by means of at least one weft thread running in a zigzag manner, in such a way that the partial fringes run directly adjacent parallel to one another. In the case of fringes comprising two partial fringes, the partial fringes are linked with one another in pairs by means of at least one weft thread.
The plastic net can be produced from polyolefins such as for example LLDPE
(linear polyethylene of low density), LDPE (polyethylene of low density), HDPE
(polyethylene of high density), PVC (polyvinylchloride), EVA (ethylene vinyl acetate) or from a similar plastic or can comprise the latter. Its weight can for example be 2 to 32 g/running metre, wherein the net density can lie for example in a range between 6 needles/inch to 2 inches needle spacing. The width of the net essentially corresponds to the width of the elastic film.
The net can consist of fringes extending in the flow direction of the net (also called warp threads) and weft threads, which connect the fringes thereby forming a zigzag pattern to form a net, which according to the prior art are interwoven with one another, wherein the fringes are each formed from a thread. Furthermore, provision can be made such that all or part of the fringes, in particular the outer fringes, are each formed from two or more threads to increase the strength.
The distance between the fringes can be arbitrary and for example lie in a range between 4.2 and 50.8 mm. The plastic threads used for the fringes can have a thickness from 10 ¨ 60 pm or less.
Furthermore, at least the outer or any fringes can each comprise two or more partial fringes to increase the strength, which are connected to one another by means of at least one weft thread running in a zigzag manner, in such a way that the partial fringes run directly adjacent parallel to one another. In the case of fringes comprising two partial fringes, the partial fringes are linked with one another in pairs by means of at least one weft thread.
3 The invention is explained in greater detail below by way of example with the aid of the appended figures. In the figures:
Figure la shows a diagrammatic cross-sectional view of a packaging material constituted according to a first embodiment of the invention;
Figure lb shows a diagrammatic plan view of the packaging material according to figure la;
Figure 2 shows a detail view from figure lb;
Figure 3a shows a diagrammatic cross-sectional view of a packaging material constituted according to a second embodiment of the invention;
Figure 3b shows a diagrammatic plan view of the packaging material according to figure 3a; and Figure 4 shows a detail view from figure 3a.
In the figures lb and 2b, MD denotes the machine direction, i.e. the flow direction of the plastic net during production or of the packaging material during winding;
TD
denotes the transverse direction, i.e. the direction at right angles to the machine direction or flow direction.
According to the invention and by reference to the example of embodiment according to figures la and lb, the packaging material comprises a stretched and heat-stabilised elastic film 1 and an elastic plastic net of essentially identical width arranged flat on film 1, which is connected to film 1 by means of an adhesive layer 2 applied on film 1, in such a way that a relative movement of film 1 and the plastic net in relation to one another is permitted in the event of high tensile stresses.
The plastic net constantly remains in contact with adhesive layer 2.
The plastic net arranged on film 1 and connected to film 1 can be constituted as a Raschel net according to the prior art, comprising fringes 3 extending in the flow
Figure la shows a diagrammatic cross-sectional view of a packaging material constituted according to a first embodiment of the invention;
Figure lb shows a diagrammatic plan view of the packaging material according to figure la;
Figure 2 shows a detail view from figure lb;
Figure 3a shows a diagrammatic cross-sectional view of a packaging material constituted according to a second embodiment of the invention;
Figure 3b shows a diagrammatic plan view of the packaging material according to figure 3a; and Figure 4 shows a detail view from figure 3a.
In the figures lb and 2b, MD denotes the machine direction, i.e. the flow direction of the plastic net during production or of the packaging material during winding;
TD
denotes the transverse direction, i.e. the direction at right angles to the machine direction or flow direction.
According to the invention and by reference to the example of embodiment according to figures la and lb, the packaging material comprises a stretched and heat-stabilised elastic film 1 and an elastic plastic net of essentially identical width arranged flat on film 1, which is connected to film 1 by means of an adhesive layer 2 applied on film 1, in such a way that a relative movement of film 1 and the plastic net in relation to one another is permitted in the event of high tensile stresses.
The plastic net constantly remains in contact with adhesive layer 2.
The plastic net arranged on film 1 and connected to film 1 can be constituted as a Raschel net according to the prior art, comprising fringes 3 extending in the flow
4 direction of the net and weft threads 4 which connect the fringes thereby forming a zigzag pattern to form a net. The distance between adjacent fringes 3 can lie for example in a range between 4.2 mm and 50.8 mm The example of embodiment shown in figures 3a, 3b and 4 differs from the example of embodiment according to figures la, lb and 2 in that all fringes 3 each comprise two partial fringes 3a and 3b for increasing the strength, which are connected to a one another by means of a weft thread 4 running in a zigzag manner, in such a way that partial fringes 3a, 3b run directly adjacent parallel to one another. The distance between partial fringe 3a, 3b of a fringe 3, i.e. the distance between the virtual central longitudinal lines of the partial fringes from one another can lie for example in a range between 2 mm and 10 mm, preferably in a range between 2 mm and 5 mm. With such small distances, partial fringes 3a, 3b can come into contact with one another.
The plastic net can be produced by a Raschel machine, which in each case comprises at least two guide needles for guiding in each case a plastic thread for knitting a fringe in each case, wherein the in each case two guide needles are supported by a common guide needle support and wherein two needles supported by a common needle support can be assigned to the in each case two guide needles.
The distance between two adjacent guide needles and/or between two directly adjacent needles can lie here in a range between 2 and 10 mm, in particular between 2 and 5 mm, as a result of which straightforward production of the fringes is enabled in the normal operation of the Raschel machine.
The plastic net can be produced by a Raschel machine, which in each case comprises at least two guide needles for guiding in each case a plastic thread for knitting a fringe in each case, wherein the in each case two guide needles are supported by a common guide needle support and wherein two needles supported by a common needle support can be assigned to the in each case two guide needles.
The distance between two adjacent guide needles and/or between two directly adjacent needles can lie here in a range between 2 and 10 mm, in particular between 2 and 5 mm, as a result of which straightforward production of the fringes is enabled in the normal operation of the Raschel machine.
Claims (9)
received at the International Office on 25th July 2019 (25.07.2019)
1. A packaging material, comprising a pre-stretched and heat-stabilised elastic film (1) and an elastic plastic net arranged flat on the film, characterised in that the plastic net is connected to the film (1) by means of an adhesive layer applied on the film (1), wherein the adhesive is a water-soluble adhesive having a low adhesive strength, in such a way that a relative movement of the film (1) and the plastic net in relation to one another is permitted in the event of high tensile stresses.
2. The packaging material according to claim 1, characterised in that the elastic film (1) can be pre-stretched up to a thickness of 5 pm and has a residual elasticity of at least 20%.
3. The packaging material according to claim 1, characterised in that it has a width of 40 cm to 380 cm.
4. The packaging material according to claim 1, 2 or 3, characterised in that the elastic film (1) is produced from LLDPE, LDPE, HDPE, VC, EVA or from a similar plastic or comprises the latter.
5. The packaging material according to claim 1, 2, 3 or 4, characterised in that the plastic net is produced from LLDPE, LDPE, HDPE, PVC, EVA or from a similar plastic or comprises the latter.
6. The packaging material according to claim 1, 2, 3, 4 or 5, characterised in that the plastic net consists of fringes (3) extending in the flow direction of the net and weft threads (4), which connect the fringes (3) thereby forming a zigzag pattern to form a net, wherein the fringes (3) are each formed from a thread or wherein all or part of the AMENDED SHEETS
fringes (3) are each formed from two or more threads to increase the strength.
fringes (3) are each formed from two or more threads to increase the strength.
7. The packaging material according to claim 6, characterised in that at least the outer fringes (3) each comprised two or more partial fringes (3a, 3b) to increase the strength, which are connected to one another by means of at least one weft thread (4) running in a zigzag manner, in such a way that the partial fringes (3a, 3b) run directly adjacent parallel to one another.
8. A method for producing packaging material executed according to any one of the preceding claims, characterised in that an elastic film (1) is pre-stretched to a defined, predetermined degree and then heat-stabilised, wherein an adhesive layer (2) is then applied on the pre-stretched film (1), wherein the adhesive is a water-soluble adhesive having a low adhesive strength, wherein in a subsequent step the film (1) and the plastic net are pressed together by means of rollers, so that a packaging material arises, one side of which is constituted as a self-adhesive film (1) covered by a plastic net without necking points, wherein a relative movement of the film (1) and the plastic net in relation to one another is permitted in the event of high tensile stresses.
9. The method according to claim 8, characterised in that the adhesive is applied by means of high-pressure jets or cylindrical axes.
AMENDED SHEETS
AMENDED SHEETS
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102018111118.5 | 2018-05-09 | ||
| DE102018111118.5A DE102018111118B4 (en) | 2018-05-09 | 2018-05-09 | Packaging material and process for its manufacture |
| PCT/EP2019/059140 WO2019214893A1 (en) | 2018-05-09 | 2019-04-10 | Packaging material and method for the production thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA3099606A1 true CA3099606A1 (en) | 2019-11-14 |
Family
ID=66105089
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA3099606A Abandoned CA3099606A1 (en) | 2018-05-09 | 2019-04-10 | Packaging material and method for its production |
Country Status (11)
| Country | Link |
|---|---|
| EP (1) | EP3566864B1 (en) |
| JP (1) | JP2021523067A (en) |
| CA (1) | CA3099606A1 (en) |
| DE (1) | DE102018111118B4 (en) |
| DK (1) | DK3566864T3 (en) |
| ES (1) | ES2859666T3 (en) |
| IL (1) | IL278564B1 (en) |
| PL (1) | PL3566864T3 (en) |
| PT (1) | PT3566864T (en) |
| UA (1) | UA126420C2 (en) |
| WO (1) | WO2019214893A1 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102020128480B4 (en) | 2020-10-29 | 2022-10-13 | Karatzis S.A. Industrial & Hotelier Enterprises | Plastic net designed as a rustle net for the cultivation and harvesting of onions |
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|---|---|---|---|---|
| US3758371A (en) * | 1970-04-17 | 1973-09-11 | Foster Grant Co Inc | Plastic net laminate material |
| JPS5211637B1 (en) | 1970-06-09 | 1977-04-01 | ||
| DE4039965A1 (en) | 1990-12-14 | 1992-06-17 | Stewing Gmbh & Co Kg | Heat-shrink film e.g. for cable joints - has two skins of specified polyolefin and core of heat=shrink threads bonded to unstretched stabilising filaments at points of intersection |
| US5712008A (en) * | 1996-02-12 | 1998-01-27 | Transhield Technology Co., L.L.C. | Wrap material with woven fabric |
| JPH10273848A (en) * | 1997-03-28 | 1998-10-13 | Morishita Kagaku Kogyo Kk | Woven fabric and substrate |
| DE29717310U1 (en) * | 1997-07-11 | 1998-01-02 | World Pac International Ag | Packaging film for food |
| JP2004232144A (en) | 2003-01-31 | 2004-08-19 | Kawakami Sangyo Co Ltd | Air-permeable sheet and method for processing the same |
| CN203530205U (en) * | 2013-08-08 | 2014-04-09 | 四川天邑康和通信股份有限公司 | Anticorrosion adhesive tape for viscoelastic bodies |
| DE202013105317U1 (en) | 2013-11-22 | 2014-11-24 | Mayr-Melnhof Karton Ag | Laminate and apparatus for producing a laminate |
| SE540294C2 (en) | 2015-09-04 | 2018-05-22 | Lamiflex Ab | Laminated film with stretched layers and method of manufacturing such film |
| KR101958658B1 (en) | 2015-11-12 | 2019-03-15 | 카라트지스 에스. 아. 인더스트리얼 앤 호텔리어 엔터프라이지스 | How to make packaging materials and packaging materials |
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| PT3566864T (en) | 2021-01-19 |
| DE102018111118A1 (en) | 2019-11-14 |
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| EP3566864B1 (en) | 2020-12-09 |
| UA126420C2 (en) | 2022-09-28 |
| DE102018111118B4 (en) | 2020-01-16 |
| WO2019214893A1 (en) | 2019-11-14 |
| IL278564B1 (en) | 2024-03-01 |
| IL278564A (en) | 2021-01-31 |
| ES2859666T3 (en) | 2021-10-04 |
| EP3566864A1 (en) | 2019-11-13 |
| DK3566864T3 (en) | 2020-12-14 |
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