Plastic packaging film

Abstract

The utility model discloses a plastic packaging film, and relates to the technical field of plastic packaging, the plastic packaging film comprises a base body, the base body is used for being attached to the surface of an object to be subjected to plastic packaging, a first end part and a second end part are distributed on the base body in the length direction, and at least one of the first end part and the second end part is provided with an exhaust part; the exhaust part is located between the surface of the base body and the surface of the object to be plastically packaged and used for exhausting gas between the surface of the base body and the surface of the object to be plastically packaged, and the exhaust part is additionally arranged on the base body and used for exhausting the gas between the surface of the base body and the surface of the object to be plastically packaged, so that bubbles are prevented from occurring between the plastic packaging film and the surface of the object to be plastically packaged; and the plastic packaging efficiency is improved.

Description

Technical Field

[0001] This application relates to the field of encapsulation technology, and more specifically to an encapsulation film. Background Art

[0002] Various paper items such as books and paper pages are prone to wrinkling and damage during long-term use. Therefore, it is often necessary to perform cover wrapping on various paper items such as books and paper pages. Currently, most book covers are wrapped by book covers. Some book covers need to be manually folded and pasted according to the size of the book, which is relatively cumbersome to use and has poor neatness. There are also some finished book covers with two insertion pockets. The two covers of the book are respectively inserted into the two insertion pockets. However, since the thickness and size of each book are different, when the size of the book cover is larger than the size of the book, the book cover is likely to fall off the book, and the aesthetics is poor. To address the aforementioned problems, for example, the utility model patent with the publication (announcement) number: CN202608285U discloses an adjustable book cover, including a surface layer and side edges connected to both sides of the surface layer. The side edges and the surface layer form an insertion pocket. One of the side edges of the surface layer is an open side edge. There are only two parallel sides connecting the open side edge and the surface layer. A connected open insertion pocket is formed between the open side edge and the surface layer; a flap extends from the edge of this side of the surface layer. After the flap is folded, it covers the side of the book page, and the flap and the open side edge cooperate to wrap the book page; in this technical solution, the open side edge is only connected to the surface layer by two parallel sides, so a connected open insertion pocket is formed. The book page can pass through this open insertion pocket, so that the insertion pocket formed by the surface layer and the side edge will not affect the book page. If the horizontal width of the book is large, the book page can pass through the open insertion pocket. After the flap is folded, it is inserted into the open side edge to wrap the book page, thus realizing the wrapping of book covers of multiple specifications; however, in this solution, the open insertion pocket is mainly for the book page to pass through, and the book cover does not fit well with the surface of the book page. There will be a hollow between the book cover and the book page. It is easy to wrinkle or even break when storing, and it is difficult for this kind of book cover to isolate the influence of the environment on the book page. The book page is prone to problems such as oxidation, yellowing, and mildew deformation.

[0003] In view of the above problems, there is also a method of wrapping the surface of book pages with a plastic film. As a common composite film in our daily life, the plastic film is widely used for protecting various paper items such as photos, paper pages, book covers, etc., protecting the paper items from being easily damaged, and being able to avoid problems such as oxidation and yellowing of paper items and mildew and deformation due to the influence of a humid environment. For example, the utility model patent with the publication number CN201244971Y discloses a plastic film for the inner surface of a book cover with a hollowed-out spine bonding part. The plastic film is provided with a plastic film reserved edge, which is used to be removed after being bonded to the book core, so as to be able to fit the covers of books of various specifications. The plastic film is tightly attached to the surface of the book pages through plastic sealing methods such as heating, achieving the effect of effectively preventing books from oxidizing and mildewing. However, it is difficult to timely discharge the air between the plastic film and the surface of the book pages by using the conventional plastic sealing method for this plastic film, and air bubbles are likely to appear between the plastic film and the surface of the book pages, thus affecting the plastic sealing effect. Summary of the Invention

[0004] The technical problem to be solved by this application is to provide a plastic film, which is provided with an exhaust part on the base body to discharge the gas between the surface of the base body and the surface of the object to be plastic-sealed, thereby preventing air bubbles from appearing between the plastic film and the surface of the object to be plastic-sealed and improving the plastic-sealing efficiency.

[0005] This application provides a plastic film, including a base body, the base body is used to fit the surface of the object to be plastic-sealed, the base body is distributed with a first end and a second end along the length direction, at least one of the first end and the second end is provided with an exhaust part, and the exhaust part is located between the surface of the base body and the surface of the object to be plastic-sealed to discharge the gas between the surface of the base body and the surface of the object to be plastic-sealed.

[0006] In this technical solution, the plastic film can be plastic-sealed by fitting the base body to the surface of the object to be plastic-sealed. The base body is respectively provided with a first end and a second end along the length direction. The first end and the second end are respectively connected to the boundaries on both sides of the base body. An exhaust part is provided on at least one of the first end and the second end, and the exhaust part is located on the side surface where the base body fits the surface of the object to be plastic-sealed. Thus, when the base body fits the surface of the object to be plastic-sealed, the exhaust part is located between the surface of the base body and the surface of the object to be plastic-sealed. The gas between the surface of the base body and the surface of the object to be plastic-sealed can be discharged through the exhaust part, thereby preventing air bubbles from appearing between the plastic film and the surface of the object to be plastic-sealed and improving the plastic-sealing efficiency of the plastic film.

[0007] As an improvement, both the first end and the second end are provided with exhaust parts. In this technical solution, by providing an exhaust part at both the first end and the second end, the gas between the surface of the base body and the surface of the object to be plastic-sealed can be discharged on both sides of the base body, and the exhaust is uniform and the exhaust efficiency is higher.

[0008] As an improvement, the exhaust part is an exhaust film arranged on the substrate. An exhaust channel and an opening are formed between the exhaust film and the substrate, and the exhaust channel is communicated with the opening. In this technical solution, the exhaust part is set as an exhaust film arranged on the substrate, and both the exhaust part and the substrate are films, so that both the exhaust film and the substrate can be plastic-sealed on the surface of the object to be plastic-sealed, with better integrity. An interconnected exhaust channel and opening are formed between the exhaust film and the substrate, and the gas between the surface of the substrate and the surface of the object to be plastic-sealed is discharged through the exhaust channel and the opening, improving the exhaust efficiency.

[0009] As an improvement, the length of the exhaust part is the same as the width dimension of the substrate. In this technical solution, the length of the exhaust film is set to be the same as the width of the substrate, with better integrity and higher exhaust efficiency.

[0010] As an improvement, the present application can provide a specific structure of the opening. Among them, the opening is a first through hole arranged on the boundary between the exhaust film and the substrate, and the first through hole is strip-shaped; the length of the first through hole is the same as the width dimension of the substrate. In this technical solution, the opening is set as the first through hole on the boundary between the exhaust part and the substrate. The first through hole is strip-shaped to match the exhaust channel. The opening structure is simple and reliable, and the length of the first through hole is the same as the width dimension of the substrate. The size of the first through hole is large, and the exhaust efficiency is higher.

[0011] As an improvement, the present application can also provide a specific structure of the opening. Among them, the opening is a second through hole arranged on the boundary between the exhaust part and the substrate, and the second through hole is strip-shaped; at least two second through holes are symmetrically arranged, and the second through holes are arranged near the corners of the substrate. In this technical solution, the opening is set as the second through hole on the boundary between the exhaust film and the substrate. The second through hole is strip-shaped to match the exhaust channel. The opening structure is simple and reliable, and at least two second through holes are symmetrically arranged up and down near the corners on the same side of the substrate, so that the gas between the surface of the substrate and the surface of the object to be plastic-sealed can be discharged through the second through holes at the corners, with uniform exhaust and higher exhaust efficiency.

[0012] As an improvement, the present application can also provide a specific structure of the opening. Among them, the opening is a third through hole arranged on the boundary between the exhaust part and the substrate, and a plurality of third through holes are evenly distributed along the boundary of the substrate. In this technical solution, the opening is composed of a plurality of third through holes evenly distributed along the boundary of the substrate. The opening structure is simple and reliable, with uniform exhaust and higher exhaust efficiency.

[0013] As an improvement, the present application can also provide a specific mechanism for the opening. Among them, the opening is a fourth through hole provided on the surface of the exhaust part, and a fifth through hole opposite to the fourth through hole is provided on the surface of the base body. The fourth through hole, the exhaust passage, and the fifth through hole are sequentially connected. In this technical solution, the fourth through hole on the exhaust film and the fifth through hole on the surface of the base body are penetrated front and back, and the gas between the surface of the base body and the surface of the object to be encapsulated can be discharged through the fourth through hole and the fifth through hole, with uniform exhaust and higher exhaust efficiency.

[0014] As an improvement, at least two fourth through holes are symmetrically arranged, and at least two fifth through holes are symmetrically arranged. Both the fourth through hole and the fifth through hole are arranged near the corners of the base body. In this technical solution, at least two fourth through holes are symmetrically arranged up and down near the corners on the same side of the base body, and at least two fifth through holes are correspondingly arranged for the fourth through holes, improving the exhaust efficiency.

[0015] As an improvement, the present application can also provide a specific mechanism for the opening. Among them, the opening is a notch structure provided at the corner of the exhaust part and the base body; at least two notch structures are symmetrically arranged. In this technical solution, the opening is set as a notch structure at the corner of the exhaust film and the base body, and the gas between the surface of the base body and the surface of the object to be encapsulated can be discharged through the notch structure, and at least two notch structures are symmetrically arranged up and down, with uniform exhaust and higher exhaust efficiency. Description of the Drawings

[0016] Figure 1 It is a front view schematic diagram of a plastic encapsulation film of the present application.

[0017] Figure 2 It is a three-dimensional structure schematic diagram of Embodiment 2 of the present application.

[0018] Figure 3 For the present application Figure 2 The partial enlarged schematic diagram at A in it.

[0019] Figure 4 It is a three-dimensional structure schematic diagram of Embodiment 3 of the present application.

[0020] Figure 5 For the present application Figure 4 The partial enlarged schematic diagram at B in it.

[0021] Figure 6 It is a three-dimensional structure schematic diagram of Embodiment 4 of the present application.

[0022] Figure 7 For the present application Figure 6 The partial enlarged schematic diagram at C in it.

[0023] Figure 8 It is a three-dimensional structure schematic diagram of Embodiment 5 of the present application.

[0024] Figure 9 For the present application Figure 8 is a partially enlarged schematic view of the position D in this application.

[0025] Figure 10 is a three-dimensional structural schematic diagram of Embodiment 6 of the present application.

[0026] Figure 11 For the present application Figure 10 is a partially enlarged schematic view of the position E in this application.

[0027] As shown in the figure: 1, matrix; 11, first end; 12, second end; 13, exhaust part; 131, first through hole; 132, second through hole; 133, third through hole; 134, fourth through hole; 135, notch structure; 14, fifth through hole. Detailed implementation manners

[0028] To better understand the present application, more detailed descriptions of various aspects of the present application will be made with reference to the accompanying drawings. It should be understood that these detailed descriptions are only descriptions of the exemplary embodiments of the present application and do not limit the scope of the present application in any way. Throughout the specification, the same reference numerals refer to the same elements.

[0029] In the accompanying drawings, for the sake of clarity, the thickness, dimensions, and shapes of the objects have been slightly exaggerated. The drawings are only examples and are not drawn to an exact scale.

[0030] It should also be understood that the terms "comprise", "include", "have", "contain", "include with", when used in this specification, indicate the presence of the described features, wholes, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, wholes, steps, operations, elements, components, and / or combinations thereof. The terms "first", "second", etc. are mainly used to distinguish different devices, elements, or components (the specific types and structures may be the same or different), and do not indicate or imply the relative importance and quantity of the indicated devices, elements, or components. Unless otherwise specified, the meaning of "a plurality" is two or more.

[0031] In addition, it should be noted that: The terms "installed", "set up", "equipped with", "connected", and "linked" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or there can be internal communication between two devices, components, or parts; it can be directly set on another component or there may be another intermediate component at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used in this article are only for the purpose of illustration. Unless otherwise defined, all technical and scientific terms used in this article have the same meaning as those commonly understood by those skilled in the technical field to which the present invention belongs. The terms used in the description of the present invention in this article are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used in this article includes any and all combinations of one or more of the related listed items.

[0032] Embodiment 1

[0033] As Figures 1 to 11 shown, the present application discloses a plastic sealing film, which includes a base body 1. The base body 1 is used to fit the surface of the object to be plastic-sealed. The base body 1 is distributed with a first end 11 and a second end 12 along the length direction. At least one of the first end 11 and the second end 12 is provided with an exhaust part 13. The exhaust part 13 is located between the surface of the base body 1 and the surface of the object to be plastic-sealed for exhausting the gas between the surface of the base body 1 and the surface of the object to be plastic-sealed. The plastic sealing film is attached to the surface of the object to be plastic-sealed through the base body 1 so as to be able to perform plastic sealing. The base body 1 is respectively provided with a first end 11 and a second end 12 along the length direction. The first end 11 and the second end 12 are respectively connected to the boundaries on both sides of the base body 1. An exhaust part 13 is provided on at least one of the first end 11 and the second end 12, and the exhaust part 13 is located on the side surface where the base body 1 is attached to the surface of the object to be plastic-sealed. Thus, when the base body 1 is attached to the surface of the object to be plastic-sealed, the exhaust part 13 is located between the surface of the base body 1 and the surface of the object to be plastic-sealed. Through the exhaust part 13, the gas between the surface of the base body 1 and the surface of the object to be plastic-sealed can be exhausted, thereby preventing bubbles from appearing between the plastic sealing film and the surface of the object to be plastic-sealed and improving the plastic sealing efficiency of the plastic sealing film.

[0034] More specifically, the exhaust part 13 is an exhaust film provided on the base body 1. An exhaust channel and an opening are formed between the exhaust film and the base body 1. The exhaust channel is communicated with the opening. The exhaust part 13 is set as an exhaust film provided on the base body 1. Both the exhaust part 13 and the base body 1 are films, so that both the exhaust film and the base body 1 can be plastic-sealed on the surface of the object to be plastic-sealed, and the integrity is better. An exhaust channel and an opening that communicate with each other are formed between the exhaust film and the base body 1. The gas between the surface of the base body 1 and the surface of the object to be plastic-sealed is exhausted through the exhaust channel and the opening, improving the exhaust efficiency.

[0035] More specifically, the length of the exhaust film is the same as the width dimension of the substrate 1. Setting the length of the exhaust film to be the same as the width of the substrate 1 results in better integrity and higher exhaust efficiency.

[0036] Embodiment 2

[0037] As Figure 2 and Figure 3 shown, based on Embodiment 1, this embodiment provides a plastic-sealed film with the same structure as that of Embodiment 1. Among them, the opening is the first through-hole 131 provided at the boundary between the exhaust portion 13 and the substrate 1. The first through-hole 131 is strip-shaped. Setting the opening as the first through-hole 131 at the boundary between the exhaust portion 13 and the substrate 1, and this first through-hole 131 is strip-shaped to adapt to the exhaust channel, the opening structure is simple and reliable; the length of the first through-hole 131 is the same as the width dimension of the substrate 1, and the length of the first through-hole 131 is the same as the width dimension of the substrate 1. The size of the first through-hole 131 is relatively large, and the exhaust efficiency is higher.

[0038] More specifically, as Figure 2 and Figure 3 shown, both the first end portion 11 and the second end portion 12 are provided with an exhaust portion 13. By providing an exhaust portion 13 at both the first end portion 11 and the second end portion 12, gases between the surface of the substrate 1 and the surface of the object to be plastic-sealed can be exhausted from both sides of the substrate 1, the exhaust is uniform and the exhaust efficiency is higher; the exhaust portions 13 on the first end portion 11 and the second end portion 12 are both provided with first through-holes 131, and two first through-holes 131 are symmetrically arranged left and right, the exhaust is uniform and the exhaust efficiency is higher.

[0039] Embodiment 3

[0040] As Figure 4 and Figure 5 shown, based on Embodiment 1, this embodiment provides a plastic-sealed film with the same structure as that of Embodiment 1. Among them, the opening is the second through-hole 132 provided at the boundary between the exhaust portion 13 and the substrate 1. The second through-hole 132 is strip-shaped. Setting the opening as the second through-hole 132 at the boundary between the exhaust portion 13 and the substrate 1, and this second through-hole 132 is strip-shaped to adapt to the exhaust channel, the opening structure is simple and reliable; at least two second through-holes 132 are symmetrically arranged, and the second through-holes 132 are arranged near the corners of the substrate 1, and at least two second through-holes 132 are symmetrically arranged up and down near the corners on the same side of the substrate 1, so that the gases between the surface of the substrate 1 and the surface of the object to be plastic-sealed can be exhausted through the second through-holes 132 at the corners, the exhaust is uniform and the exhaust efficiency is higher.

[0041] More specifically, as Figure 4 and Figure 5As shown, exhaust portions 13 are provided at both the first end portion 11 and the second end portion 12. By providing an exhaust portion 13 at both the first end portion 11 and the second end portion 12, gases between the surface of the substrate 1 and the surface of the object to be encapsulated can be exhausted from both sides of the substrate 1, with uniform exhaust and higher exhaust efficiency. Second through holes 132 are provided in the exhaust portions 13 on the first end portion 11 and the second end portion 12, that is, four second through holes 132 are provided corresponding to the four corners of the substrate 1, with uniform exhaust and higher exhaust efficiency.

[0042] Example Four

[0043] As Figure 6 and Figure 7 As shown, based on Example One, this example provides a plastic encapsulation film, whose structure is the same as that of Example One. Among them, the opening is a third through hole 133 provided at the boundary between the exhaust portion 13 and the substrate 1. A plurality of third through holes 133 are evenly distributed along the boundary of the substrate 1. The opening is composed of a plurality of third through holes 133 evenly distributed along the boundary of the substrate 1. The opening structure is simple and reliable, with uniform exhaust and higher exhaust efficiency.

[0044] More specifically, as Figure 6 and Figure 7 As shown, exhaust portions 13 are provided at both the first end portion 11 and the second end portion 12. By providing an exhaust portion 13 at both the first end portion 11 and the second end portion 12, gases between the surface of the substrate 1 and the surface of the object to be encapsulated can be exhausted from both sides of the substrate 1, with uniform exhaust and higher exhaust efficiency. Third through holes 133 are provided in the exhaust portions 13 on the first end portion 11 and the second end portion 12. Two groups of third through holes 133 are symmetrically arranged left and right, with uniform exhaust and higher exhaust efficiency.

[0045] Example Five

[0046] As Figure 8 and Figure 9 As shown, based on Example One, this example provides a plastic encapsulation film, whose structure is the same as that of Example One. Among them, the opening is a fourth through hole 134 provided on the surface of the exhaust portion 13. A fifth through hole 14 opposite to the fourth through hole 134 is provided on the surface of the substrate 1. The fourth through hole 134, the exhaust channel, and the fifth through hole 14 are sequentially communicated. The fourth through hole 134 on the exhaust portion 13 and the fifth through hole 14 on the surface of the substrate 1 are vertically penetrated. Gases between the surface of the substrate 1 and the surface of the object to be encapsulated can be exhausted through the fourth through hole 134 and the fifth through hole 14, with uniform exhaust and higher exhaust efficiency.

[0047] More specifically, as Figure 8 and Figure 9As shown, there are at least two fourth through-holes 134 symmetrically arranged, and at least two fifth through-holes 14 symmetrically arranged. Both the fourth through-holes 134 and the fifth through-holes 14 are arranged near the corners of the base body 1. There are at least two fourth through-holes 134 symmetrically arranged up and down near the corners on the same side of the base body 1, and at least two fifth through-holes 14 are correspondingly arranged for the fourth through-holes 134, improving the exhaust efficiency.

[0048] More specifically, as Figure 8 and Figure 9 shown, exhaust parts 13 are arranged at both the first end part 11 and the second end part 12. By arranging one exhaust part 13 at both the first end part 11 and the second end part 12, the gas between the surface of the base body 1 and the surface of the object to be encapsulated can be exhausted on both sides of the base body 1, with uniform exhaust and higher exhaust efficiency; four fourth through-holes 134 are arranged on the exhaust parts 13 at the first end part 11 and the second end part 12 corresponding to the four corners of the base body 1, and four fifth through-holes 14 are arranged corresponding to the four corners of the base body 1, with uniform exhaust and higher exhaust efficiency.

[0049] Embodiment Six

[0050] As Figure 10 and Figure 11 shown, based on Embodiment One, this embodiment provides a plastic encapsulation film, whose structure is the same as that of Embodiment One. Among them, the opening is a notch structure 135 arranged at the exhaust part 13 and the corner of the base body 1; there are at least two notch structures 135 symmetrically arranged. By setting the opening as the notch structure 135 at the exhaust part 13 and the corner of the base body 1, the gas between the surface of the base body 1 and the surface of the object to be encapsulated can be exhausted through this notch structure 135, and there are at least two notch structures 135 symmetrically arranged up and down, with uniform exhaust and higher exhaust efficiency.

[0051] More specifically, as Figure 10 and Figure 11 shown, exhaust parts 13 are arranged at both the first end part 11 and the second end part 12. By arranging one exhaust part 13 at both the first end part 11 and the second end part 12, the gas between the surface of the base body 1 and the surface of the object to be encapsulated can be exhausted on both sides of the base body 1, with uniform exhaust and higher exhaust efficiency; notch structures 135 are arranged on the exhaust parts 13 at the first end part 11 and the second end part 12, and four notch structures 135 are arranged corresponding to the four corners of the base body 1, with uniform exhaust and higher exhaust efficiency.

[0052] This application is not limited to the above best implementation manner. Anyone can obtain other various forms of products under the inspiration of this application. However, no matter what changes are made in its shape or structure, as long as it has a technical solution identical or similar to this application, it falls within the protection scope of this application.

Claims

1. A plastic sealing film, comprising a substrate (1), wherein the substrate (1) is used to adhere to the surface of an object to be plastic sealed, and is characterized in that: The substrate (1) is provided with a first end (11) and a second end (12) distributed along the length direction, and at least one of the first end (11) and the second end (12) is provided with an exhaust portion (13), and the exhaust portion (13) is located between the surface of the substrate (1) and the surface of the object to be plastic-sealed so as to exhaust the gas between the surface of the substrate (1) and the surface of the object to be plastic-sealed.

2. A plastic sealing film according to claim 1, characterized in that: The first end (11) and the second end (12) are both provided with an exhaust portion (13).

3. A plastic sealing film according to claim 1 or 2, characterized in that: The exhaust portion (13) is an exhaust membrane arranged on the substrate (1), an exhaust channel and an opening are formed between the exhaust membrane and the substrate (1), and the exhaust channel is connected to the opening.

4. A plastic sealing film according to claim 3, characterized in that: The length of the exhaust portion (13) is the same as the width of the base (1).

5. A plastic sealing film according to claim 3, characterized in that: The opening is a first through hole (131) arranged on the boundary between the exhaust portion (13) and the base (1); the first through hole (131) is in the shape of an elongated strip; the length of the first through hole (131) is the same as the width of the base (1).

6. A plastic sealing film according to claim 3, characterized in that: The opening is a second through hole (132) arranged on the boundary between the exhaust portion (13) and the base (1), and the second through hole (132) is in the shape of an elongated strip; at least two second through holes (132) are symmetrically arranged, and the second through holes (132) are arranged close to the corners of the base (1).

7. The plastic sealing film according to claim 3, characterized in that: The opening is a third through hole (133) arranged on the boundary between the exhaust portion (13) and the base (1), and a plurality of the third through holes (133) are evenly distributed along the boundary of the base (1).

8. The plastic sealing film according to claim 3, characterized in that: The opening is a fourth through hole (134) arranged on the surface of the exhaust portion (13); the surface of the base (1) is provided with a fifth through hole (14) opposite to the fourth through hole (134); the fourth through hole (134), the exhaust channel and the fifth through hole (14) are connected in sequence.

9. A plastic sealing film according to claim 8, characterized in that: At least two of the fourth through holes (134) are symmetrically arranged, and at least two of the fifth through holes (14) are symmetrically arranged. Both the fourth through holes (134) and the fifth through holes (14) are arranged close to the corners of the base (1).

10. The plastic sealing film according to claim 3, characterized in that: The opening is a notch structure (135) arranged on the corners of the exhaust portion (13) and the base (1); at least two notch structures (135) are symmetrically arranged.

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