CN113459619A - PVDC sandwich casing packaging film printed with external heat sealing edge and preparation method thereof - Google Patents
PVDC sandwich casing packaging film printed with external heat sealing edge and preparation method thereof Download PDFInfo
- Publication number
- CN113459619A CN113459619A CN202110806795.5A CN202110806795A CN113459619A CN 113459619 A CN113459619 A CN 113459619A CN 202110806795 A CN202110806795 A CN 202110806795A CN 113459619 A CN113459619 A CN 113459619A
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- packaging film
- pvdc
- layer
- film
- printing
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- 229920006280 packaging film Polymers 0.000 title claims abstract description 24
- 239000012785 packaging film Substances 0.000 title claims abstract description 24
- 229920001328 Polyvinylidene chloride Polymers 0.000 title claims abstract description 23
- 239000005033 polyvinylidene chloride Substances 0.000 title claims abstract description 23
- 238000007789 sealing Methods 0.000 title claims description 20
- 238000002360 preparation method Methods 0.000 title abstract description 7
- 238000003466 welding Methods 0.000 claims abstract description 6
- 238000007639 printing Methods 0.000 claims description 24
- 238000013329 compounding Methods 0.000 claims description 6
- 238000004519 manufacturing process Methods 0.000 claims description 5
- 238000005520 cutting process Methods 0.000 claims description 4
- 238000007646 gravure printing Methods 0.000 claims description 4
- 238000010025 steaming Methods 0.000 claims description 3
- 235000013580 sausages Nutrition 0.000 claims description 2
- 238000000034 method Methods 0.000 claims 3
- 230000000968 intestinal effect Effects 0.000 claims 1
- 230000032798 delamination Effects 0.000 abstract description 2
- 239000010410 layer Substances 0.000 description 21
- 239000011229 interlayer Substances 0.000 description 5
- 239000002702 enteric coating Substances 0.000 description 4
- 238000009505 enteric coating Methods 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 235000013305 food Nutrition 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Images
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
- 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
- B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
- B32B27/08—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
-
- 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
- B32B27/18—Layered products comprising a layer of synthetic resin characterised by the use of special additives
- B32B27/20—Layered products comprising a layer of synthetic resin characterised by the use of special additives using fillers, pigments, thixotroping agents
-
- 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
- B32B33/00—Layered products characterised by particular properties or particular surface features, e.g. particular surface coatings; Layered products designed for particular purposes not covered by another single class
-
- 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
- B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
- B32B37/06—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the heating method
-
- 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
- B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
- B32B37/10—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the pressing technique, e.g. using action of vacuum or fluid pressure
-
- 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
- B32B38/00—Ancillary operations in connection with laminating processes
- B32B38/14—Printing or colouring
- B32B38/145—Printing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D65/00—Wrappers or flexible covers; Packaging materials of special type or form
- B65D65/38—Packaging materials of special type or form
- B65D65/40—Applications of laminates for particular packaging purposes
-
- 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
- B32B2307/40—Properties of the layers or laminate having particular optical properties
- B32B2307/402—Coloured
- B32B2307/4023—Coloured on the layer surface, e.g. ink
-
- 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
- B32B2307/40—Properties of the layers or laminate having particular optical properties
- B32B2307/402—Coloured
- B32B2307/4026—Coloured within the layer by addition of a colorant, e.g. pigments, dyes
-
- 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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W90/00—Enabling technologies or technologies with a potential or indirect contribution to greenhouse gas [GHG] emissions mitigation
- Y02W90/10—Bio-packaging, e.g. packing containers made from renewable resources or bio-plastics
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Laminated Bodies (AREA)
- Packages (AREA)
Abstract
The invention provides a PVDC sandwich casing packaging film printed with an external hot sealed edge and a preparation method thereof. According to the invention, the outer heat-sealed edge printed character layer improves the binding force between two films, prevents delamination, and the inner heat-sealed edge does not print ink, so that the influence of the ink on the heat seal strength is reduced, and the problem of blister after high-frequency welding of the PVDC sandwich casing is avoided.
Description
Technical Field
The invention relates to the field of packaging films, in particular to a PVDC sandwich casing packaging film printed with an external heat edge sealing and a preparation method thereof.
Background
The production mode of the existing PVDC sandwich casing is mainly characterized in that an inner and outer hot edge sealing and no-character printing mode is adopted, for example, patent CN1884007A adopts an inner and outer hot edge sealing and no-character printing mode, the obtained packaging film has good picture layering, brightness and vividness, but the production process discovers that the mode can cause that the produced casing seriously influences the production efficiency due to layering when in use, the casing produced by adopting the inner and outer hot edge sealing and no-character printing mode is easy to form water bubbles at a heat sealing line when in high-frequency welding, so that the product is moldy and deteriorated, the water bubble product accounts for about 142.3/ten thousand, and the annual loss of an enterprise is about 1 million; and the produced products with bubbles can not be removed in the existing automatic picking machine, and only picking is carried out manually, so that the working efficiency of workers is greatly reduced, the mildewing and deterioration rate of the products is continuously increased, and more seriously, the potential safety hazard of food and higher external feedback are caused.
Disclosure of Invention
The invention provides a PVDC sandwich casing packaging film printed with an external heat sealed edge and a preparation method thereof, and solves the technical problems that the heat sealed edge of the existing PVDC sandwich casing is easy to delaminate, and water bubbles are easy to exist at a heat sealing line after high-frequency welding. The invention not only improves the binding force between the PVDC interlayer enteric coating layer films so as to prevent the interlayer enteric coating from layering to influence the production efficiency, but also avoids the influence of printing ink on the heat seal strength of the PVDC interlayer enteric coating and avoids the problem of blister when the PVDC interlayer enteric coating is welded by high frequency.
The technical scheme for realizing the invention is as follows:
the PVDC sandwich casing packaging film with the printed outer heat sealing edge comprises an outer heat sealing edge, a casing body and an inner heat sealing edge, wherein a printed character layer is arranged on the inner side of the outer heat sealing edge.
The weld line is located on the outer heat seal edge. The inner and outer heat-sealed edges of the flaky casing are overlapped together after the flaky casing passes through the forming plate, the outer side of the outer heat-sealed edge is thermally combined with the inner heat-sealed edge under the action of high-frequency current, the welding positions can be all positions on the outer heat-sealed edge and are not fixed at a certain point or a certain line, and characters on the heat-sealed edge are positioned on the inner side of the outer transparent film of the outer heat-sealed edge.
The packaging film comprises an outer transparent film and an inner layer in sequence from outside to inside, and an ink layer is arranged on the inner surface of the outer layer.
The outer layer transparent film is made of a transparent PVDC film with the thickness of 15-30 mu m, and the inner layer is made of a white or other-color PVDC film with the thickness of 15-35 mu m.
The printed text layer is positioned on the inner side of the outer transparent film.
The preparation method of the packaging film comprises the following steps:
a. preparing a printing plate, wherein the outer heat sealed edge is provided with a printing character layer;
the printing plate to be prepared by the invention prints characters by external heat edge sealing and does not print characters by internal heat edge sealing;
b. printing the outer transparent film by using steaming-resistant inner printing ink;
c. and compounding the printed surface of the outer transparent film and the inner transparent film at a certain temperature and pressure.
And cutting the compounded packaging film, and curing after cutting.
In the step c, the compounding temperature is 40-60 ℃, and the compounding pressure is 50-80N. After printing ink on the PVDC transparent film, under the action of 40-80% humidity environment, 45-55 ℃ oven temperature and 60-80N composite pressure, the viscosity and the adhesion fastness of the ink layer are increased, so that the interlayer bonding force between the printing surface of the PVDC transparent film and the base film is improved.
The curing temperature is 20-30 ℃.
The invention has the beneficial effects that: according to the invention, the outer heat-sealed edge printed character layer improves the binding force between two films, prevents delamination, and the inner heat-sealed edge does not print ink, so that the influence of the ink on the heat seal strength is reduced, and the problem of blister after high-frequency welding of the PVDC sandwich casing is avoided.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is an internal schematic view of the present invention.
FIG. 2 is a schematic view of the structure of the present invention.
Fig. 3 is a schematic view of a conventional packaging film.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the following embodiments of the present invention, and it should be understood that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without inventive effort based on the embodiments of the present invention, are within the scope of the present invention.
As shown in fig. 2, the PVDC sandwich casing packaging film with the printed outer heat sealed edge sequentially comprises an outer transparent film 1 and an inner layer 3 from outside to inside, wherein an ink layer 2 is arranged on the inner surface of the outer layer 1, the outer transparent film 1, the inner ink layer 2 and the inner heat sealed edge 6 are compounded to form the packaging film, as shown in fig. 1, the packaging film comprises an outer heat sealed edge 4, a casing body 5 and an inner heat sealed edge 6 after being unfolded, and the outer heat sealed edge 4 is provided with a printed text layer 7. The weld line 8 is located on the outer heat seal edge.
The outer layer transparent film 1 is made of a transparent PVDC film with the thickness of 15-30 mu m, and the inner layer 3 is made of a white or other-color PVDC film with the thickness of 15-35 mu m.
The printed text layer 7 is positioned on the inner side of the outer transparent film 1.
The preparation method of the packaging film comprises the following steps:
a. preparing a gravure printing plate, wherein the outer heat sealed edge is provided with a printing character layer;
the printing of the outer transparent film 1 adopts a gravure printing technology, a special gravure printing plate is prepared according to the design requirements of different products, and ink is transferred to the outer transparent film 1 through a gravure plate, so that the printing effect of the outer transparent film 1 is achieved, and the printing plate to be prepared is used for printing characters by an outer heat edge sealing 4 and not printing characters by an inner heat edge sealing 6; as shown in fig. 3, the condition that the conventional inner and outer heat sealing edges are printed with characters is shown;
b. printing the outer transparent film 1 by using steaming-resistant inner printing ink;
c. the printing surface of the outer transparent film 1 and the inner layer 3 are compounded at 40-60 ℃ and 50-80N.
The following table is the conventional two-side heat seal edge printed text sandwich casing blister problem tracking data in fig. 3
As can be seen from the table, the blister problem is easy to occur on the conventional heat-sealed edges, but by using the technical scheme of the invention, the using condition of 7 batches of sausage casings is tracked in 3-6 months in 2021, about 10 thousands of products are produced, and the blister is not found.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (9)
1. An outer heat sealed edge printed PVDC sandwich sausage casing packaging film is characterized in that: comprises an external heat sealing edge (4), an intestinal body (5) and an internal heat sealing edge (6), wherein the inner side of the external heat sealing edge (4) is provided with a printed text layer (7).
2. The packaging film of claim 1, wherein: and welding lines (8) are arranged on the printed text layer (7).
3. The packaging film according to claim 1 or 2, wherein: the packaging film comprises an outer transparent film (1) and an inner layer (3) from outside to inside in sequence, and an ink layer (2) is arranged on the inner surface of the outer layer (1).
4. The packaging film according to claim 3, wherein: the outer layer transparent film (1) is made of a transparent PVDC film with the thickness of 15-30 mu m, and the inner layer (3) is made of a white or other-color PVDC film with the thickness of 15-35 mu m.
5. The packaging film according to claim 4, wherein: the printed text layer (7) is positioned on the inner side of the outer transparent film (1).
6. The method for producing a packaging film according to claim 5, characterized by comprising the steps of:
a. preparing a gravure printing plate, wherein the outer heat sealed edge (4) is provided with a printing text layer (7);
b. printing the outer transparent film (1) by using steaming-resistant inner printing ink;
c. and compounding the printing surface of the outer transparent film (1) and the inner layer (3) at a certain temperature and pressure.
7. The method of claim 6, wherein: and cutting the compounded packaging film, and curing after cutting.
8. The method of claim 6, wherein: in the step c, the compounding temperature is 40-60 ℃, and the compounding pressure is 50-80N.
9. The method of claim 7, wherein: the curing temperature is 20-30 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110806795.5A CN113459619B (en) | 2021-07-16 | 2021-07-16 | PVDC interlayer casing packaging film printed with external heat-sealing edges and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110806795.5A CN113459619B (en) | 2021-07-16 | 2021-07-16 | PVDC interlayer casing packaging film printed with external heat-sealing edges and preparation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113459619A true CN113459619A (en) | 2021-10-01 |
| CN113459619B CN113459619B (en) | 2024-02-06 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110806795.5A Active CN113459619B (en) | 2021-07-16 | 2021-07-16 | PVDC interlayer casing packaging film printed with external heat-sealing edges and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113459619B (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4690843A (en) * | 1986-02-17 | 1987-09-01 | Hiromichi Inagaki | Casings for ham and sausage |
| EP0640289A2 (en) * | 1993-08-25 | 1995-03-01 | Wolff Walsrode Aktiengesellschaft | Conditioned shirred food casings ready for filling |
| CN2286967Y (en) * | 1996-05-19 | 1998-08-05 | 史耀华 | Package for sausage-like food |
| WO2002082912A1 (en) * | 2001-04-12 | 2002-10-24 | Kalle Gmbh & Co. Kg | Clip free closed, tubular-shaped food covering |
| CN1535810A (en) * | 2003-04-10 | 2004-10-13 | 郑州宝蓝包装技术有限公司 | Colour printed PVDC enteric coating film and its production method |
| CN1884007A (en) * | 2005-06-22 | 2006-12-27 | 河南双汇投资发展股份有限公司 | PVDC casing sandwiched printing package film and method for producing same |
| JP2013230843A (en) * | 2012-04-27 | 2013-11-14 | Asahi Kasei Chemicals Corp | Laminated film of vinylidene chloride-based resin and easily openable cylindrical container |
| CN105644936A (en) * | 2014-10-17 | 2016-06-08 | 重庆涵天包装印务有限公司 | Polyvinyl dichloride (PVDC) casing packaging film provided with printed interlayer and production method of PVDC casing packaging film |
| US20170066228A1 (en) * | 2014-01-15 | 2017-03-09 | Cryovac, Inc. | Multilayer pvdc barrier heat shrinkable films |
-
2021
- 2021-07-16 CN CN202110806795.5A patent/CN113459619B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4690843A (en) * | 1986-02-17 | 1987-09-01 | Hiromichi Inagaki | Casings for ham and sausage |
| EP0640289A2 (en) * | 1993-08-25 | 1995-03-01 | Wolff Walsrode Aktiengesellschaft | Conditioned shirred food casings ready for filling |
| CN2286967Y (en) * | 1996-05-19 | 1998-08-05 | 史耀华 | Package for sausage-like food |
| WO2002082912A1 (en) * | 2001-04-12 | 2002-10-24 | Kalle Gmbh & Co. Kg | Clip free closed, tubular-shaped food covering |
| CN1535810A (en) * | 2003-04-10 | 2004-10-13 | 郑州宝蓝包装技术有限公司 | Colour printed PVDC enteric coating film and its production method |
| CN1884007A (en) * | 2005-06-22 | 2006-12-27 | 河南双汇投资发展股份有限公司 | PVDC casing sandwiched printing package film and method for producing same |
| JP2013230843A (en) * | 2012-04-27 | 2013-11-14 | Asahi Kasei Chemicals Corp | Laminated film of vinylidene chloride-based resin and easily openable cylindrical container |
| US20170066228A1 (en) * | 2014-01-15 | 2017-03-09 | Cryovac, Inc. | Multilayer pvdc barrier heat shrinkable films |
| CN105644936A (en) * | 2014-10-17 | 2016-06-08 | 重庆涵天包装印务有限公司 | Polyvinyl dichloride (PVDC) casing packaging film provided with printed interlayer and production method of PVDC casing packaging film |
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| Publication number | Publication date |
|---|---|
| CN113459619B (en) | 2024-02-06 |
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