CN112389842A - Plastic bag for food packaging and production method thereof - Google Patents
Plastic bag for food packaging and production method thereof Download PDFInfo
- Publication number
- CN112389842A CN112389842A CN202011380207.8A CN202011380207A CN112389842A CN 112389842 A CN112389842 A CN 112389842A CN 202011380207 A CN202011380207 A CN 202011380207A CN 112389842 A CN112389842 A CN 112389842A
- Authority
- CN
- China
- Prior art keywords
- film
- layer film
- plastic bag
- food packaging
- outer layer
- 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.)
- Pending
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Classifications
-
- 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
- B65D31/00—Bags or like containers made of paper and having structural provision for thickness of contents
- B65D31/02—Bags or like containers made of paper and having structural provision for thickness of contents with laminated walls
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B7/00—Mixing; Kneading
- B29B7/02—Mixing; Kneading non-continuous, with mechanical mixing or kneading devices, i.e. batch type
- B29B7/06—Mixing; Kneading non-continuous, with mechanical mixing or kneading devices, i.e. batch type with movable mixing or kneading devices
- B29B7/10—Mixing; Kneading non-continuous, with mechanical mixing or kneading devices, i.e. batch type with movable mixing or kneading devices rotary
- B29B7/12—Mixing; Kneading non-continuous, with mechanical mixing or kneading devices, i.e. batch type with movable mixing or kneading devices rotary with single shaft
- B29B7/16—Mixing; Kneading non-continuous, with mechanical mixing or kneading devices, i.e. batch type with movable mixing or kneading devices rotary with single shaft with paddles or arms
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B7/00—Mixing; Kneading
- B29B7/02—Mixing; Kneading non-continuous, with mechanical mixing or kneading devices, i.e. batch type
- B29B7/22—Component parts, details or accessories; Auxiliary operations
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C35/00—Heating, cooling or curing, e.g. crosslinking or vulcanising; Apparatus therefor
- B29C35/02—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C69/00—Combinations of shaping techniques not provided for in a single one of main groups B29C39/00 - B29C67/00, e.g. associations of moulding and joining techniques; Apparatus therefore
- B29C69/001—Combinations of shaping techniques not provided for in a single one of main groups B29C39/00 - B29C67/00, e.g. associations of moulding and joining techniques; Apparatus therefore a shaping technique combined with cutting, e.g. in parts or slices combined with rearranging and joining the cut parts
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Oral & Maxillofacial Surgery (AREA)
- Thermal Sciences (AREA)
- Laminated Bodies (AREA)
Abstract
The invention relates to the technical field of packaging bag production, and discloses a plastic bag for food packaging and a production method thereof, wherein the production method comprises the following steps: (1) preparing raw materials: preparing an aluminum foil, a PET film and an adhesive; (2) compounding: compounding the inner layer film and the outer layer film through an adhesive to form a composite film; (3) printing: printing the printing part on the outer layer film by adopting a printing device; (4) bonding: respectively bonding the two films in the step (3); (5) slitting: and (4) cutting the film in the step (4) to form a plastic bag for food packaging. The packaging bag produced by the method has excellent performance, and the quality guarantee period of the product can be prolonged.
Description
Technical Field
The invention relates to the technical field of packaging bag production, in particular to a plastic bag for food packaging and a production method thereof.
Background
The packaging bag is a bag for packaging various articles, so that the goods are convenient to transport and easy to store in the production flow process. In the aspect of medicine, the packaging bag is mainly used for packaging medicines, and is convenient for transportation of batch or quantitative medicine packages.
In order to improve the convenience of using plastic bags for food packaging, a few enterprises put forward bar-shaped composite film bags for liquid packaging, but because flexible packaging is filled with liquid medicines and has high requirements on the barrier property of the liquid medicines, a multilayer composite film is generally adopted, on one hand, the heat sealability is increased, on the other hand, the barrier property is increased, at least three layers of structures, namely an outer layer, a barrier layer and a heat sealing layer, are commonly used at present, representative composite films comprise PET-AL-CPP and PET-AL-PE, and due to the fact that the multilayer flexible plastic is formed by compounding, the tearing is not easy to occur, particularly, the straight tearing property easily causes the spraying of the liquid medicines, and the service performance is poor.
Disclosure of Invention
The invention aims to provide a plastic bag for food packaging, which has excellent performance and can prolong the shelf life of products.
In order to achieve the above objects, the present invention provides a plastic bag for food packaging; a plastic bag for food packaging comprises a packaging bag body, wherein the packaging bag body is formed by bonding composite films, each composite film comprises an outer film, an inner film and an adhesive, and the inner film and the outer film are bonded through the adhesive; the inner film is a vacuum aluminized cast polypropylene film, and the outer film is a biaxially oriented polypropylene film.
The invention also aims to provide a production method of the plastic bag for food packaging, which comprises the following steps: (1) preparing raw materials: preparing an aluminum foil, a PET film and an adhesive;
(2) compounding: compounding the inner layer film and the outer layer film through an adhesive to form a composite film;
(3) printing: printing the printing part on the outer layer film by adopting a printing device;
(4) bonding: respectively bonding the two films in the step (3);
(5) slitting: and (4) cutting the film in the step (4) to form a plastic bag for food packaging.
The principle and the beneficial effect of this scheme of adoption lie in: in this scheme, the bag body comprises the complex film. The composite film is divided into an inner layer film and an outer layer film. The outer layer is a PET film which has excellent optical performance, high transparency, low haze, high glossiness, high tensile strength, good thermal stability and low thermal shrinkage rate, while the inner layer is an aluminum foil which has the advantages of clean and sanitary surface and no growth of any bacteria or microorganisms on the surface, can be directly contacted with food without worry of harming human health, and the aluminum foil is not volatile, and can never dry or shrink as well as the packaged food. The packaging bag has excellent performance and the shelf life of food can be prolonged by compounding the inner layer film and the outer layer film in the scheme.
Further, a printing part is printed on one surface of the outer layer film far away from the inner layer film.
Further, the method comprises the following steps:
further, the step (1) further comprises stirring the adhesive.
Further, in the step (2), the compounding further comprises heating the film.
Further, in the step (2), the heating temperature is 40-50 ℃.
Drawings
FIG. 1 is a schematic structural view of a stirring device in a second embodiment of a plastic bag for food packaging and a method for manufacturing the same according to the present invention;
FIG. 2 is a perspective view of a second embodiment of the plastic bag for food packaging and the method for producing the same;
figure 3 is a top view of a tensioner and belt connection.
Detailed Description
The following is further detailed by way of specific embodiments:
reference numerals in the drawings of the specification include: stirring barrel 1, puddler 2, gravity ball 3, stirring branch 4, limiting plate 6, drive wheel 7, belt 8, support tight piece 9, pivot 10, belt pulley 11, motor 12, connecting rod 13, take-up pulley 15, spring 16, baffle 17, telescopic link 18.
Example one
A production method of a plastic bag for food packaging comprises the following steps:
(1) preparing raw materials: preparing an aluminum foil, a PET film and an adhesive;
(2) compounding: compounding the inner layer film and the outer layer film through an adhesive to form a composite film;
(3) printing: printing the printing part on the outer layer film by adopting a printing device;
(4) bonding: respectively bonding the two films in the step (3);
(5) slitting: and (4) cutting the film in the step (4) to form a plastic bag for food packaging.
The printing part is printed on one surface of the outer layer film, which is far away from the inner layer film. Wherein, in the step (1), the method also comprises the step of stirring the adhesive. The compounding in the step (2) also comprises heating the film; the heating temperature is 40-50 deg.C.
In this scheme, the bag body comprises the complex film. The composite film is divided into an inner layer film and an outer layer film. The outer layer is a PET film which has excellent optical performance, high transparency, low haze, high glossiness, high tensile strength, good thermal stability and low thermal shrinkage rate, while the inner layer is an aluminum foil which has the advantages of clean and sanitary surface and no growth of any bacteria or microorganisms on the surface, can be directly contacted with food without worry of harming human health, and the aluminum foil is not volatile, and can never dry or shrink as well as the packaged food. The packaging bag has excellent performance and the shelf life of food can be prolonged by compounding the inner layer film and the outer layer film in the scheme.
Example two
The difference between this embodiment and the first embodiment is that, in this embodiment, the step (1) further includes stirring with a binder. The stirring is carried out on a stirring device.
Referring to fig. 1, 2 and 3, the stirring device includes a stirring cylinder 1, a connecting frame (not shown), a motor 12 and a stirring shaft, the connecting frame is connected to the stirring cylinder 1 through a bolt, and the connecting frame is connected to the motor 12 through a bolt. Two belt pulleys 11 are rotatably connected to the connecting frame, and an output shaft of the motor 12 is connected with the belt pulleys 11 through a flat key. The embodiment also comprises a driving wheel 7, a belt 8, a telescopic rod 18, a spring 16 and a tension wheel 15. The driving wheel 7 is in a shape of a circular truncated cone. The connecting frame is connected with a baffle 17 through a screw, the telescopic rod 18 penetrates through the spring 16, one end of the telescopic rod is welded with the baffle 17, and the other end of the telescopic rod is rotatably connected with the tension wheel 15. Two ends of the spring 16 are respectively welded with the baffle plate 17 and the tension wheel 15. The tensioner 15 can slide on the connecting frame. The driving wheel 7, the belt pulley 11 and the tension pulley 15 are driven by a belt 8.
In this embodiment, each belt pulley 11 is coaxially connected with a rotating shaft 10, a connecting rod 13 is welded on the side of the rotating shaft 10, and the end part of the connecting rod 13 far away from the rotating shaft 10 is provided with a supporting block 9. One end face of the abutting block 9 is an inclined face, and the end face of the abutting block 9 which is the inclined face abuts against the lower end face of the driving wheel 7. The two pulleys 11 are alternately in contact with the drive wheel 7 when rotating.
The stirring rod 2 is positioned in the stirring cylinder body 1, and the upper end of the stirring rod 2 penetrates through the stirring cylinder body 1 and is coaxially connected with the driving wheel 7. The stirring rod 2 is vertically matched with the stirring cylinder body 1 in a sliding way. A plurality of stirring support rods 4 are arranged at the lower part of the stirring rod 2, one end of each stirring support rod 4 is hinged with the stirring shaft through a connecting pin, and a gravity ball 3 which can be an iron ball is arranged at the other end of each stirring support rod 4. A limit plate 6 is coaxially arranged at the upper end of the stirring rod 2.
In the specific embodiment, when only the adhesive needs to be stirred, various adhesives and solvents are put into the stirring cylinder body 1, then the motor 12 is started, and the motor 12 rotates and drives one of the belt pulleys 11 to rotate. When the belt pulley 11 rotates, the belt 8 drives the driving wheel 7 to rotate. The stirring rod 2 coaxially connected with the driving wheel 7 rotates in the stirring cylinder 1. In the original state, the stirring rod 4 is closely attached to the stirring rod 2, and after the stirring rod 2 rotates, the stirring rod 4 is thrown away under the action of centrifugal force to stir the adhesive in the stirring cylinder 1. When the pulley 11 rotates, the abutment block 9 is also driven to rotate. The abutting block 9 rotates, the inclined plane abuts against the lower end of the driving wheel 7, the driving wheel 7 moves upwards under the action of the abutting block 9, namely, the stirring support rod 4 can stir the adhesives at different positions in the vertical direction. Since the driving wheel 7 is circular truncated cone-shaped, when the driving wheel 7 slides vertically, the position where the driving wheel 7 contacts the belt 8 changes, and the rotating speed of the driving wheel 7 also changes, so that the angle between the stirring rod 4 and the stirring rod 2 changes. Like this at the stirring in-process, stirring branch 4 all can produce the change in the position of level and vertical direction to can make originally stirring of adhesive more even, thereby improved the intensity and the quality of plastic bag. And the arrangement of the tension wheel 15, the telescopic rod 18 and the spring 16 can enable the belt to be always in contact with the driving wheel.
The foregoing is merely an example of the present invention and common general knowledge in the art of designing and/or characterizing particular aspects and/or features is not described in any greater detail herein. It should be noted that, for those skilled in the art, without departing from the technical solution of the present invention, several variations and modifications can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicability of the patent. The scope of the claims of the present application shall be determined by the contents of the claims, and the description of the embodiments and the like in the specification shall be used to explain the contents of the claims.
Claims (6)
1. The plastic bag for food packaging is characterized in that: the packaging bag comprises a packaging bag body, wherein the packaging bag body is formed by bonding composite films, each composite film comprises an outer layer film, an inner layer film and an adhesive, and the inner layer film and the outer layer film are bonded through the adhesive; the inner layer film is aluminum foil, and the outer layer film is PET film.
2. The plastic bag for food packaging according to claim 1, wherein: the printing part is printed on one surface of the outer layer film, which is far away from the inner layer film.
3. A production method for preparing a plastic bag for food packaging according to claim 2, characterized in that: the preparation method comprises the following steps:
(1) preparing raw materials: preparing an aluminum foil, a PET film and an adhesive;
(2) compounding: compounding the inner layer film and the outer layer film through an adhesive to form a composite film;
(3) printing: printing the printing part on the outer layer film by adopting a printing device;
(4) bonding: respectively bonding the two films in the step (3);
(5) slitting: and (4) cutting the film in the step (4) to form a plastic bag for food packaging.
4. The method for producing a plastic bag for food packaging according to claim 3, wherein: in the step (1), the method further comprises stirring the adhesive.
5. The method for producing a plastic bag for food packaging according to claim 4, wherein: in the step (2), the compounding process further comprises heating the film.
6. The method for producing a plastic bag for food packaging according to claim 5, wherein: in the step (2), the heating temperature is 40-50 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011380207.8A CN112389842A (en) | 2020-11-30 | 2020-11-30 | Plastic bag for food packaging and production method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011380207.8A CN112389842A (en) | 2020-11-30 | 2020-11-30 | Plastic bag for food packaging and production method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112389842A true CN112389842A (en) | 2021-02-23 |
Family
ID=74604857
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011380207.8A Pending CN112389842A (en) | 2020-11-30 | 2020-11-30 | Plastic bag for food packaging and production method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112389842A (en) |
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|---|---|---|---|---|
| CN103171817A (en) * | 2013-04-10 | 2013-06-26 | 赵秀雄 | Method for manufacturing flexographic printing high-temperature-resistant food plastic packaging bag |
| CN103434211A (en) * | 2013-07-19 | 2013-12-11 | 河南李烨包装科技有限公司 | Medicinal cold-stamped halogen-free composite aluminum foil packaging material and preparation method thereof |
| CN204916518U (en) * | 2015-06-15 | 2015-12-30 | 香飘飘食品股份有限公司 | Bagging -off of tea with milk aluminium foil package |
| CN204998067U (en) * | 2015-09-09 | 2016-01-27 | 上海贝达包装材料有限公司 | High resistant separates dampproofing vacuum bag |
| CN205470464U (en) * | 2016-03-29 | 2016-08-17 | 浙江新长海新材料股份有限公司 | Food package bag with pearl effect |
| CN205467746U (en) * | 2016-03-02 | 2016-08-17 | 江阴申隆包装材料有限公司 | Stable complex film and wrapping bag that can spout sign indicating number of coefficient of friction |
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| CN109177415A (en) * | 2018-09-29 | 2019-01-11 | 浙江金石包装有限公司 | A kind of package compound film and preparation method thereof |
| CN109618785A (en) * | 2018-12-14 | 2019-04-16 | 贵州永盛农业开发有限公司 | A kind of implantation methods of car li |
| CN110713907A (en) * | 2019-10-31 | 2020-01-21 | 武汉合缘绿色生物股份有限公司 | High-efficient environmental protection's equipment for fermented feed production |
| CN111111523A (en) * | 2019-12-26 | 2020-05-08 | 安徽铭捷讯网络科技有限公司 | Glue preparation device with water bath for decorative plate and preparation method |
| CN111762438A (en) * | 2020-07-16 | 2020-10-13 | 安徽紫金新材料科技股份有限公司 | Easy-to-tear packaging bag |
| CN211811029U (en) * | 2019-10-08 | 2020-10-30 | 苏州思展实业有限公司 | Ultraviolet-proof and damp-proof aluminum foil bag |
-
2020
- 2020-11-30 CN CN202011380207.8A patent/CN112389842A/en active Pending
Patent Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103171817A (en) * | 2013-04-10 | 2013-06-26 | 赵秀雄 | Method for manufacturing flexographic printing high-temperature-resistant food plastic packaging bag |
| CN103434211A (en) * | 2013-07-19 | 2013-12-11 | 河南李烨包装科技有限公司 | Medicinal cold-stamped halogen-free composite aluminum foil packaging material and preparation method thereof |
| CN204916518U (en) * | 2015-06-15 | 2015-12-30 | 香飘飘食品股份有限公司 | Bagging -off of tea with milk aluminium foil package |
| CN204998067U (en) * | 2015-09-09 | 2016-01-27 | 上海贝达包装材料有限公司 | High resistant separates dampproofing vacuum bag |
| CN205467746U (en) * | 2016-03-02 | 2016-08-17 | 江阴申隆包装材料有限公司 | Stable complex film and wrapping bag that can spout sign indicating number of coefficient of friction |
| CN205470464U (en) * | 2016-03-29 | 2016-08-17 | 浙江新长海新材料股份有限公司 | Food package bag with pearl effect |
| CN106393877A (en) * | 2016-08-25 | 2017-02-15 | 惠州兴鑫涂料化工有限公司 | Food packaging film |
| CN109177415A (en) * | 2018-09-29 | 2019-01-11 | 浙江金石包装有限公司 | A kind of package compound film and preparation method thereof |
| CN109618785A (en) * | 2018-12-14 | 2019-04-16 | 贵州永盛农业开发有限公司 | A kind of implantation methods of car li |
| CN211811029U (en) * | 2019-10-08 | 2020-10-30 | 苏州思展实业有限公司 | Ultraviolet-proof and damp-proof aluminum foil bag |
| CN110713907A (en) * | 2019-10-31 | 2020-01-21 | 武汉合缘绿色生物股份有限公司 | High-efficient environmental protection's equipment for fermented feed production |
| CN111111523A (en) * | 2019-12-26 | 2020-05-08 | 安徽铭捷讯网络科技有限公司 | Glue preparation device with water bath for decorative plate and preparation method |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
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| RJ01 | Rejection of invention patent application after publication | ||
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Application publication date: 20210223 |