CN108016110B - Packaging sealing easy-to-tear composite film - Google Patents

Packaging sealing easy-to-tear composite film Download PDF

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Publication number
CN108016110B
CN108016110B CN201711486024.2A CN201711486024A CN108016110B CN 108016110 B CN108016110 B CN 108016110B CN 201711486024 A CN201711486024 A CN 201711486024A CN 108016110 B CN108016110 B CN 108016110B
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China
Prior art keywords
composite film
layer
film
package
granules
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Application number
CN201711486024.2A
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Chinese (zh)
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CN108016110A (en
Inventor
戈应仓
王茂刚
吴方奴
孙震
胡敬慈
丁志雄
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Yunnan Mingbo Industrial Co ltd
Original Assignee
YUNNAN MINGBO PACKAGE PRINTING CO Ltd
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Priority to CN201711486024.2A priority Critical patent/CN108016110B/en
Publication of CN108016110A publication Critical patent/CN108016110A/en
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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
    • B32B27/32—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
    • B32B15/00—Layered products comprising a layer of metal
    • B32B15/04—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B15/08—Layered products comprising a layer of metal comprising metal 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
    • B32B15/085—Layered products comprising a layer of metal comprising metal 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 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
    • B32B15/00—Layered products comprising a layer of metal
    • B32B15/20—Layered products comprising a layer of metal comprising aluminium or copper
    • 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
    • B32B27/34—Layered products comprising a layer of synthetic resin comprising polyamides
    • 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
    • B32B27/36—Layered products comprising a layer of synthetic resin comprising polyesters
    • 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
    • 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
    • B32B7/10—Interconnection of layers at least one layer having inter-reactive properties
    • 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
    • B32B2307/30—Properties of the layers or laminate having particular thermal properties
    • B32B2307/31—Heat sealable
    • 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
    • B32B2307/70—Other properties

Abstract

The invention relates to a composite film for easily tearing off a package seal, relates to the technical field of package seals, and solves the problem that how to carry out heat sealing on prefabricated package cups or trays made of different materials and the composite film is easy to tear off in the prior art. This complex film includes from outer to interior in proper order range upon range of printing layer, the barrier layer that sets up and can with the inlayer of the prefabricated package heat-seal of different materials, the printing layer the barrier layer with it is compound through the bond line between the adjacent two-layer in the inlayer. The invention can be heat-sealed with prefabricated packages made of different materials, widens the application range of the composite film, reduces the storage cost of different raw and auxiliary materials for manufacturing the prefabricated packages, and further improves the resource utilization rate.

Description

Packaging sealing easy-to-tear composite film
Technical Field
The invention relates to the technical field of package sealing, in particular to an easy-to-tear composite film for the package sealing.
Background
The composite film for sealing the existing package on the market can only meet the heat sealing of the yoghurt cup or the tray made of any one material or two materials of PP (polypropylene), PS (polystyrene) and PVC (polyvinyl chloride). The existing composite membrane has the defects that: (1) in order to meet the requirements of heat sealing of different material structures, a plurality of raw and auxiliary materials are required to be purchased; (2) as a plurality of raw and auxiliary materials need to be reserved, the capital is also overstocked, and the storage space is occupied. (3) The composite film produced due to the fact that the information of the prefabricated packaging materials of the customers is obtained wrongly cannot be subjected to heat sealing with the prefabricated packaging cup or the tray, and therefore resource waste is caused. For example, the yogurt cup of the customer is actually a PP cup, but the obtained information is a PS cup, and the composite film made according to the heat sealing requirement of the PP cup cannot be discarded due to heat sealing with the PS cup, which brings great loss to both parties.
Disclosure of Invention
The technical problem to be solved by the invention is to provide the composite film for easily tearing off the package seal, which can be thermally sealed with prefabricated package cups or trays made of different materials and is easy to tear off.
The technical scheme for solving the technical problems is as follows: the utility model provides a package sealing easily takes off complex film, includes from outer printing layer, the barrier layer to interior in-order range upon range of setting and can with the inlayer of different material prefabricated package heat-sealings, the printing layer the barrier layer with it is compound through the bond line between adjacent two-layer in the inlayer.
The invention has the beneficial effects that: through the setting of printing layer, barrier layer and inlayer to the printing layer can print required content as required, and the barrier layer can be with the outer object separation of prefabricated packing outside the heat-seal back, and the inlayer can be with the prefabricated packing heat-seal of different materials, has widened the application range of complex film, has reduced the storage cost that is used for making the different raw and auxiliary materials of prefabricated packing, and then has improved resource utilization.
On the basis of the technical scheme, the invention can be further improved as follows.
Further, the packaging seal is an easy-to-tear composite film, and the inner layer is a modified PE film.
The modified PE film has the advantages of good tensile rate, medium resistance and excellent heat sealability, so that the modified PE film can be subjected to heat sealing with prefabricated packages made of different materials.
Further, the packaging seal is easy to uncover the composite film, and the modified PE film is subjected to blending extrusion blow molding by adopting two or more polyethylene granules with different types.
The beneficial effect of adopting the above further scheme is that the formed modified PE film can be thermally sealed with prefabricated packages made of different materials through blending modification.
Further, the packaging seal is easy to uncover the composite film, and the blending is that two or more than two polyethylene granules with different types are uniformly stirred at normal temperature.
Further, the composite film with the package seal and the easy uncovering function is characterized in that the modified PE film comprises, by weight, 80-90 parts of 2426H granules, 70-80 parts of 2420H granules, 100-120 parts of 30E714 granules, 50-60 parts of XB753 granules and 80-90 parts of 30E734 granules.
Further, the packaging sealing opening is easy to uncover, and the heat sealing strength of the modified PE film and the prefabricated package is 8-15N/15 mm.
Further, the package sealing is easy to tear off the composite film, and the prefabricated package is made of any one of PP polypropylene, PS polystyrene and PVC polyvinyl chloride.
Further, the packaging seal easy-to-tear composite film, the printing layer is made of one of biaxially oriented polypropylene, biaxially oriented polyester or biaxially oriented nylon.
Further, the packaging sealing opening is easy to uncover the composite film, and the barrier layer is made of one of vacuum aluminum plating biaxially oriented polyester, silicon plating biaxially oriented polyester or aluminum foil.
Further, the packaging seal is an easy-to-tear composite film, and the bonding layer is made of polyurethane adhesive.
Drawings
FIG. 1 is a schematic cross-sectional view of the present invention
In the drawings, the components represented by the respective reference numerals are listed below:
1. Printing layer, 2, barrier layer, 3, inner layer, 4, adhesive layer, 41, first adhesive layer, 42, second adhesive layer.
Detailed Description
The principles and features of this invention are described below in conjunction with the following drawings, which are set forth by way of illustration only and are not intended to limit the scope of the invention.
Referring to fig. 1, the present invention provides a composite film for easy-to-tear package closure, which comprises a printed layer 1, a barrier layer 2 and an inner layer 3, wherein the printed layer 1, the barrier layer 2 and the inner layer are sequentially stacked from outside to inside, and the inner layer can be heat-sealed with prefabricated packages made of different materials. Adjacent two layers of the printing layer 1, the barrier layer 2 and the inner layer 3 are compounded through an adhesive layer 4.
According to the composite film, the printing layer 1 can print required contents as required through the arrangement of the printing layer 1, the blocking layer 2 and the inner layer 3, objects outside the prefabricated package after heat sealing can be blocked outside through the blocking layer 2, and the inner layer 3 can be heat-sealed with prefabricated packages made of different materials, so that the application range of the composite film is widened, the storage cost of different raw and auxiliary materials for manufacturing the prefabricated package is reduced, and the resource utilization rate is further improved.
In one embodiment, the inner layer 3 is a modified PE film.
Further, the modified PE film is subjected to blending extrusion blow molding by adopting two or more polyethylene pellets of different types.
Further, the blending is that two or more than two polyethylene grains with different types are evenly stirred at normal temperature. Thereby reducing the processing difficulty of the modified PE film and being beneficial to reducing the processing cost.
Further, the modified PE film comprises, by weight, 80-90 parts of 2426H granules, 70-80 parts of 2420H granules, 100-120 parts of 30E714 granules, 50-60 parts of XB753 granules and 80-90 parts of 30E734 granules.
Specifically, 2426H pellets, 2420H pellets, 30E714 pellets, XB753 pellets, 30E734 pellets, among others, were each a variety of pellet sizes for polyethylene.
The preparation process of the modified PE film is a PE film preparation process known by the technical personnel in the field, but the modified PE film has different components. On a PE film blowing machine, various types of material particles are loaded on a hopper according to the weight proportion, and are uniformly stirred at normal temperature. Then plasticizing and extruding the uniformly mixed material particles at the extrusion temperature of 180-210 ℃. And then sequentially performing inflation traction → air ring cooling → herringbone traction → corona treatment → film rolling and blowing process to finally prepare the modified PE film. Wherein the rotating speed of the screw is 300r/min to 320r/min, and the blow-up ratio is 2.5: 1.
Further, the heat seal strength of the modified PE film and the prefabricated package is 8-15N/15 mm.
Specifically, the heat seal strength which cannot be uncovered by sealing is more than or equal to 40N/15mm, and poor heat seal and air leakage are easy to occur when the heat seal strength is less than or equal to 3N/15 mm. Therefore, the heat sealing strength of the invention can achieve the purposes of heat sealing and easy tearing in the using process.
Furthermore, the prefabricated package adopts any one of PP polypropylene, PS polystyrene and PVC polyvinyl chloride.
In the first embodiment, the formula and the main process parameters of the modified PE film are as follows: and 80 parts of 2426H granules, 70 parts of 2420H granules, 100 parts of 30E714 granules, 50 parts of XB753 granules and 80 parts of 30E734 granules are subjected to blending, extrusion and blow molding, wherein the extrusion temperature is 185 ℃, the screw rotation speed is 300r/min, and the blow-up ratio is 2.5: 1. A modified PE film was produced with a thickness of 60 μm (conventionally applied thickness). The heat sealing strength of the modified PE film and the PVC material is 8-10N/15mm, the heat sealing strength of the modified PE film and the PP material is 9-11N/15mm, and the heat sealing strength of the modified PE film and the PS material is 8-9N/15 mm. PVC, PP and PS are all materials for manufacturing prefabricated packages, so that the modified PE can be thermally sealed with prefabricated packages made of different materials.
Example two, the formula and the main process parameters of the modified PE film were as follows: 90 parts of 2426H granules, 80 parts of 2420H granules, 120 parts of 30E714 granules, 60 parts of XB753 granules and 90 parts of 30E734 granules, and carrying out blending extrusion blow molding at the extrusion temperature of 185 ℃, the screw rotation speed of 300r/min and the blow-up ratio of 2.5: 1. A modified PE film was produced with a thickness of 60 μm (conventionally applied thickness). The heat sealing strength of the modified PE film and the PVC material is 10-12N/15mm, the heat sealing strength of the modified PE film and the PP material is 13-15N/15mm, and the heat sealing strength of the modified PE film and the PS material is 10-12N/15 mm. Thus, the modified PE can be heat-sealed with prefabricated packages made of different materials.
In the third embodiment, the formula and the main process parameters of the modified PE film are as follows: 90 parts of 2426H granules, 80 parts of 2420H granules, 120 parts of 30E714 granules, 60 parts of XB753 granules and 90 parts of 30E734 granules, and carrying out blending extrusion blow molding at the extrusion temperature of 220 ℃, the screw rotation speed of 320r/min and the blow-up ratio of 2.5: 1. A modified PE film was produced with a thickness of 60 μm (conventionally applied thickness). The heat sealing strength of the modified PE film and the PVC material is 10-12N/15mm, the heat sealing strength of the modified PE film and the PP material is 13-15N/15mm, and the heat sealing strength of the modified PE film and the PS material is 10-12N/15 mm. Thus, the modified PE can be heat-sealed with prefabricated packages made of different materials.
As can be seen from the comparison between the second example and the third example, under the condition that the formula components of the modified PE film are the same, the parameters of the production process are changed, and the heat seal strength is not influenced.
As can be seen from the comparison of the first to third examples, the heat seal strength of the modified PE film and various materials can meet the expected packaging requirements within the range of formulation components and process parameters, and the heat seal strength of the modified PE film tends to increase with the increase of the components of the 30E714 granules, the XB753 granules and the 30E734 granules.
In some embodiments, the printing layer 1 is made of any one of biaxially oriented polypropylene, biaxially oriented polyester, or biaxially oriented nylon. Thereby being capable of having excellent tensile strength and printability.
In some embodiments, the barrier layer 2 is any one of vacuum aluminized biaxially oriented polyester, silicon-plated biaxially oriented polyester, or aluminum foil. Thereby enabling replacement of the barrier against oxygen and water vapor.
In some embodiments, the adhesive layer 4 is a polyurethane adhesive.
The adhesive layer 4 includes a first adhesive layer 41 and a second adhesive layer 42. Wherein the first adhesive layer 41 is located between the printed layer 1 and the barrier layer 2 and the second adhesive layer 42 is located between the barrier layer 2 and the inner layer 3. The main function of the adhesive layer 4 is to bond the raw materials together and to make the outer layer 1, the barrier layer 2 and the inner layer 3 a firmly bonded unit. The polyurethane adhesive has the characteristics of strong adhesion, good heat resistance, good sanitary safety, stable chemical performance and the like.
The preparation method of the composite film comprises the step of selecting a film made of any one of biaxially oriented polypropylene, biaxially oriented polyester or biaxially oriented nylon as the printing layer 1. The barrier layer 2 is made of a film made of any one of vacuum aluminum plated biaxially oriented polyester, silicon plated biaxially oriented polyester or aluminum foil. A modified PE film was formed as the inner layer 3 by blending modification. The outer surface of the printing layer 1 is printed, and the inner surface of the printing layer 1 and the outer surface of the barrier layer 2 are adhesively combined by the first adhesive layer 41. The inner surface of the barrier layer 2 and the outer surface of the inner layer 3 are then adhesively compounded by the second adhesive layer 42.
When in use, the inner layer 3 can be heat sealed with different prefabricated packaging cups or trays and is easy to tear. Therefore, the composite film can be thermally sealed with prefabricated packages made of different materials, the application range of the composite film is widened, the storage cost of different raw and auxiliary materials for manufacturing the prefabricated packages is reduced, and the resource utilization rate is further improved.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "inside", "outside", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are only for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. In the description of the present invention, "a plurality" means two or more unless explicitly defined otherwise.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; either directly or indirectly through intervening media, either internally or in any other suitable relationship. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
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 (7)

1. The composite film is characterized by comprising a printing layer (1), an isolation layer (2) and an inner layer (3) which can be prefabricated and packaged and heat-sealed with different materials, wherein the printing layer (1), the isolation layer (2) and two adjacent layers in the inner layer (3) are compounded through an adhesive layer (4), the inner layer (3) is a modified PE film, the modified PE film comprises 2426H granules 80-90 parts, 2420H granules 70-80 parts, 30E714 granules 100-120 parts, XB753 granules 50-60 parts and 30E734 granules 80-90 parts by weight in proportion, and the granules are subjected to blending extrusion blow molding.
2. The easy-to-tear composite film for packaging and sealing as claimed in claim 1, wherein the blending is carried out by stirring the polyethylene pellets at room temperature.
3. a package closure easy-open composite film according to claim 1, wherein the heat seal strength of the modified PE film to the prefabricated package is 8-15N/15 mm.
4. The easy-open composite film for package closures as claimed in claim 1, wherein the prefabricated package is made of any one of PP polypropylene, PS polystyrene and PVC polyvinyl chloride.
5. The easy-to-tear composite film for package closures as claimed in claim 1, wherein the printing layer (1) is made of any one of biaxially oriented polypropylene, biaxially oriented polyester or biaxially oriented nylon.
6. The easy-to-tear composite film for package closures according to claim 1, wherein the barrier layer (2) is made of any one of vacuum aluminized biaxially oriented polyester, silicon-plated biaxially oriented polyester or aluminum foil.
7. A composite film for easy-to-tear package closures as claimed in claim 1, wherein said adhesive layer (4) is a polyurethane adhesive.
CN201711486024.2A 2017-12-29 2017-12-29 Packaging sealing easy-to-tear composite film Active CN108016110B (en)

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Application Number Priority Date Filing Date Title
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CN108016110B true CN108016110B (en) 2019-12-17

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Publication number Priority date Publication date Assignee Title
CN109156597A (en) * 2018-09-21 2019-01-08 广西来宾滋乐美食品有限公司 A kind of red bean ice lolly and preparation method thereof with fragrance of osmanthus
CN112706430A (en) * 2019-10-25 2021-04-27 内蒙古蒙牛乳业（集团）股份有限公司 Yogurt eight-connecting-cup, modified PP sheet for manufacturing yogurt eight-connecting-cup and preparation method of modified PP sheet
JP2023514478A (en) * 2019-12-20 2023-04-06 ダウ グローバル テクノロジーズ エルエルシー Barrier laminate film for lap seal

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Address after: 650000 plot b-4-7, high tech industrial base, new town, high tech Zone, Kunming City, Yunnan Province

Patentee after: Yunnan Mingbo Industrial Co.,Ltd.

Address before: 650000 plot b-4-7, high tech industrial base, new town, high tech Zone, Kunming City, Yunnan Province

Patentee before: YUNNAN MINGBO PACKAGING AND PRINTING CO.,LTD.