CN116198175A - Ultrasonic welding method for food packaging box - Google Patents
Ultrasonic welding method for food packaging box Download PDFInfo
- Publication number
- CN116198175A CN116198175A CN202310345868.4A CN202310345868A CN116198175A CN 116198175 A CN116198175 A CN 116198175A CN 202310345868 A CN202310345868 A CN 202310345868A CN 116198175 A CN116198175 A CN 116198175A
- Authority
- CN
- China
- Prior art keywords
- paper
- ultrasonic welding
- sheet
- abutting
- food packaging
- 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.)
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
- B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
- B31B50/00—Making rigid or semi-rigid containers, e.g. boxes or cartons
- B31B50/60—Uniting opposed surfaces or edges; Taping
- B31B50/64—Uniting opposed surfaces or edges; Taping by applying heat or pressure, e.g. by welding
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
- B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
- B31B50/00—Making rigid or semi-rigid containers, e.g. boxes or cartons
- B31B50/74—Auxiliary operations
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- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
- D21F11/00—Processes for making continuous lengths of paper, or of cardboard, or of wet web for fibre board production, on paper-making machines
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- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H23/00—Processes or apparatus for adding material to the pulp or to the paper
- D21H23/02—Processes or apparatus for adding material to the pulp or to the paper characterised by the manner in which substances are added
- D21H23/22—Addition to the formed paper
- D21H23/52—Addition to the formed paper by contacting paper with a device carrying the material
Abstract
The invention discloses an ultrasonic welding method for food packaging boxes, which comprises the following steps: 1) Adding an anti-seepage agent into the pulp raw material, and preparing sheet paper; 2) Coating a PE film on the back of the sheet paper by a coating machine; 3) Covering a layer of BOPP paper-plastic composite film on the front surface of the sheet paper by a film covering machine; 4) And abutting the edges of the back surfaces of the two sides, which are required to be adhered, of the sheet paper, and abutting and fusing the abutting and abutting edges of the sheet paper by an ultrasonic welding machine. According to the ultrasonic welding method for the food packaging box, the PE films at the butt joint positions of the edges of the sheet-shaped paper are melted by the ultrasonic welding machine and then mixed and bonded together to finish the welding of one side of the packaging box, and after the welding, the butt joint positions are bonded firmly and are not easy to separate, so that the BOPP paper-plastic composite film at one side of the front face is effectively protected from being damaged, and patterns are printed or modeled on the BOPP paper-plastic composite film more conveniently.
Description
Technical Field
The invention relates to the technical field of packaging box forming processes, in particular to an ultrasonic welding method for food packaging boxes.
Background
For food paper box packaging products, the food paper box packaging products are displayed and sold in a low-temperature cabinet, condensed water can appear in the low-temperature cabinet in summer, and the paper box is permeated, so that the paper box is deformed, and the sales is influenced; some packaging boxes need to be butt-jointed and bonded with two side edges of the same surface of paper, and then modeling, patterns and the like are carried out at the butt-jointed and bonded place, but the general manufacturing method is that the paper raw material in the shape of a sheet is formed by bonding the edges of the paper raw material through glue, but the glue is not firm after bonding, the paper body and the joint bonding place are easy to be soft after being wetted, and the phenomenon of edge opening and separation easily occurs at the bonding edge, so that the paper box cannot be normally used; therefore, the application provides an ultrasonic welding method for food packaging boxes, which is used for solving the problems of infirm bonding and easy deformation of the edges of the paper boxes.
Disclosure of Invention
In view of the foregoing drawbacks or shortcomings in the prior art, it is desirable to provide a method of ultrasonic welding of food packaging boxes.
The invention provides an ultrasonic welding method for food packaging boxes, which comprises the following steps:
1) Adding an anti-seepage agent into the pulp raw material, and preparing sheet paper;
2) Coating a PE film on the back of the sheet paper by a coating machine;
3) Covering a layer of BOPP paper-plastic composite film on the front surface of the sheet paper by a film covering machine;
4) And abutting the edges of the back surfaces of the two sides, which are required to be adhered, of the sheet paper, and abutting and fusing the abutting and abutting edges of the sheet paper by an ultrasonic welding machine.
Preferably, the working temperature of the coating machine is 200-300 ℃.
Preferably, the working temperature of the ultrasonic welding machine is 200-300 ℃.
Preferably, the BOPP paper-plastic composite film is adhered to one side of the front surface of the sheet paper by glue.
Compared with the prior art, the invention has the beneficial effects that:
according to the ultrasonic welding method for the food packaging box, one PE film is coated on one side of the back side of the sheet-shaped paper, then the butt joint positions of the two side edges of the back side of the sheet-shaped paper are subjected to interference fusion through the ultrasonic welding machine, the PE films at the butt joint positions of the edges of the sheet-shaped paper are melted through the ultrasonic welding machine and then mixed and bonded together, the welding of one side of the packaging box is completed, after the welding, the butt joint positions are bonded firmly, the edges are not easy to open and separate, the BOPP paper-plastic composite film on the front side is effectively protected from being damaged, and patterns are printed or molded on the BOPP paper-plastic composite film more conveniently; in addition, by adding the anti-seepage agent into the paper pulp raw material and covering one layer of BOPP paper-plastic composite film on one side of the front surface of the sheet paper, the integral anti-seepage and moisture-proof capacity of the packaging box is enhanced, and the service life of the packaging box is prolonged.
It should be understood that the description in this summary is not intended to limit the critical or essential features of the embodiments of the invention, nor is it intended to limit the scope of the invention. Other features of the present invention will become apparent from the description that follows.
Drawings
Other features, objects and advantages of the present invention will become more apparent upon reading of the detailed description of non-limiting embodiments, made with reference to the accompanying drawings in which:
FIG. 1 is a schematic view of a structure of a sheet-like paper after lamination;
FIG. 2 is a schematic view of the structure of the sheet-like paper after bonding the two sides;
reference numerals in the drawings: 1. sheet-like paper; 2. a PE film; 3. BOPP paper-plastic composite film.
Detailed Description
The invention is described in further detail below with reference to the drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be noted that, for convenience of description, only the portions related to the invention are shown in the drawings.
It should be noted that, without conflict, the embodiments of the present invention and features of the embodiments may be combined with each other. The invention will be described in detail below with reference to the drawings in connection with embodiments.
Referring to fig. 1-2, an embodiment of the present invention provides an ultrasonic welding method for food packaging boxes, including the following steps:
1) Adding an anti-seepage agent into the pulp raw material, and preparing sheet paper 1; adding an anti-seepage agent into paper during the source manufacturing process, and enhancing the anti-seepage capability of the formed paper;
2) Coating a PE film 2 on the back of the sheet-shaped paper 1 through a coating machine;
wherein, the coating machine works at 200-300 ℃, PE plastic is melted at high temperature and coated on one surface of the back side of the sheet paper to form a PE film 2;
3) Covering a layer of BOPP paper-plastic composite film 3 on the front surface of the sheet paper 1 by a film covering machine; the BOPP paper-plastic composite film 3 has moisture-proof capability, so that the service life of the packaging box body is ensured;
4) And abutting the edges of the back surfaces of the two sides of the sheet paper 1 to be adhered, and abutting and fusing the abutting and abutting edges of the sheet paper 1 by an ultrasonic welding machine.
Referring to fig. 2, two opposite sides of the back of the sheet paper 1 are abutted, that is, the PE films 2 on the two opposite sides of the back are abutted, and the PE films 2 abutted on the two opposite sides of the back are melted to form a tightly combined body through high-temperature welding of an ultrasonic welding machine, that is, edges on the two opposite sides of the back are tightly adhered together.
In a preferred embodiment, the coater is operated at a temperature of 200-300 ℃.
In a preferred embodiment, the ultrasonic welder operates at a temperature of 200-300 ℃.
In a preferred embodiment, the BOPP paper-plastic composite film 3 is glued to the front side of the sheet-like paper.
According to the ultrasonic welding method for the food packaging box, one layer of PE film 2 is coated on one side of the back face of the sheet paper 1, the PE film 2 which is abutted against is adhered into a whole after being dissolved by an ultrasonic welding machine, namely, the ultrasonic welding machine is used for preventing and fusing the PE film from being adhered by traditional glue, so that the two sides of the sheet paper are adhered more tightly and firmly, and the service life of the sheet paper is prolonged.
In the description of the present specification, the terms "connected," "mounted," "secured," and the like are to be construed broadly, and for example, "connected" may be a fixed connection, a removable connection, or an integral connection; can be directly connected or indirectly connected through an intermediate medium. The specific meaning of the terms in this application will be understood by those of ordinary skill in the art as the case may be.
In the description of the present specification, the terms "one embodiment," "some embodiments," and the like, mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present application. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The foregoing is merely a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and variations may be made to the present application by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application should be included in the protection scope of the present application.
Claims (4)
1. An ultrasonic welding method for food packaging boxes is characterized by comprising the following steps:
1) Adding an anti-seepage agent into the pulp raw material, and preparing sheet paper;
2) Coating a PE film on the back of the sheet paper by a coating machine;
3) Covering a layer of BOPP paper-plastic composite film on the front surface of the sheet paper by a film covering machine;
4) And abutting the edges of the back surfaces of the two sides, which are required to be adhered, of the sheet paper, and abutting and fusing the abutting and abutting edges of the sheet paper by an ultrasonic welding machine.
2. The ultrasonic welding method of food packaging box according to claim 1, wherein the working temperature of the coating machine is 200-300 ℃.
3. The ultrasonic welding method of food packaging according to claim 1, wherein the operating temperature of the ultrasonic welding machine is 200-300 ℃.
4. The ultrasonic welding method of food packaging box according to claim 1, wherein the BOPP paper-plastic composite film is adhered to the front side of the sheet-shaped paper by glue.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310345868.4A CN116198175A (en) | 2023-04-03 | 2023-04-03 | Ultrasonic welding method for food packaging box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310345868.4A CN116198175A (en) | 2023-04-03 | 2023-04-03 | Ultrasonic welding method for food packaging box |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116198175A true CN116198175A (en) | 2023-06-02 |
Family
ID=86509620
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310345868.4A Pending CN116198175A (en) | 2023-04-03 | 2023-04-03 | Ultrasonic welding method for food packaging box |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116198175A (en) |
-
2023
- 2023-04-03 CN CN202310345868.4A patent/CN116198175A/en active Pending
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