High-temperature resistant shrink-fit protective film and its preparation apparatus

Abstract

This invention discloses a high-temperature resistant shrinkable protective film and its preparation apparatus. The film includes a protective base film, which is connected to a rubber band via a connecting adhesive, allowing for significant shrinkage. The base film is then heat-pressed together using the preparation apparatus to increase the adhesion between the base film and the rubber band, thereby improving the overall shrinkage performance of the protective film. A support plate located at the inlet end of the worktable is equipped with a grooving component to perform a long, perforated grooving process on the protective base film. A heat-pressing component is located at the outlet end of the support plate near the worktable to perform a heat-pressing process on the rubber bands connected to the protective base film by the connecting adhesive, thus producing a protective film with good shrinkage properties.

Description

Technical Field

[0001] This invention relates to the field of protective film technology, specifically to a high-temperature resistant shrink-type protective film and its preparation apparatus. Background Technology

[0002] Protective films can be categorized by their application into digital product protective films, automotive protective films, household protective films, food preservation protective films, and large-scale protective films for vegetable cultivation. Protective films are characterized by high light transmittance, good sealing, good toughness, and some even have good high-temperature and fire resistance.

[0003] However, the high-temperature resistant protective film used in agricultural greenhouses today has poor tensile and shrinkage resistance. When in use, if water collects at the top of the protective film or if soil falls, the protective film is prone to being crushed or broken due to insufficient toughness, thus failing to achieve the protective effect and causing property damage.

[0004] To address the aforementioned problems, a high-temperature resistant shrink-resistant protective film and its preparation apparatus are proposed. Summary of the Invention

[0005] The purpose of this invention is to provide a high-temperature resistant protective film with enhanced shrinkage by adding a rubber band sheet and an apparatus for preparing the same, thereby solving the problems in the prior art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a high-temperature resistant shrinkable protective film, comprising a protective base film, wherein the protective base film is connected to a rubber band by a connecting adhesive, thereby enabling the protective base film to have great shrinkage, and is hot-pressed together by a preparation device to increase the adhesion between the protective base film and the rubber band.

[0007] Preferably, the rubber band includes a lower rubber band and an upper rubber band located on the other side of the protective film, which is connected in the middle by a connecting adhesive. The inner sides of both ends of the upper rubber band and the lower rubber band are connected to the protective film by the connecting adhesive.

[0008] Preferably, the rubber band is segmented on the protective film, with each segment of the protective film being one meter long.

[0009] Preferably, the protective film has elongated perforations on its segmented portions.

[0010] Preferably, the apparatus for preparing the high-temperature shrink-resistant protective film includes a workbench and a support column set on the upper part of the workbench. A groove pressing component is provided at the inlet end of the support plate on the workbench to perform a groove pressing process for the protective film with long strip perforations. A hot pressing component is provided at the outlet end of the support plate near the workbench to perform a hot pressing connection process for the rubber bands connected on the protective film with the connecting adhesive.

[0011] Preferably, the worktable has an alignment groove on one side of its upper end and a lower hot press component on the other side of its upper end.

[0012] Preferably, the pressing component includes a first hydraulic cylinder and a connecting cone located at the lower end of the support plate, and the lower end of the connecting cone is provided with a pressing head corresponding to the alignment groove.

[0013] Preferably, the hot pressing component includes a second hydraulic cylinder and a hollow center portion located at the lower end of the support plate, with an upper hot pressing head corresponding to the lower hot pressing component provided at the lower end of the hollow center portion.

[0014] Preferably, both the upper end of the connecting cone and the upper end of the hollow center are provided with a movable rod, and the upper end of the movable rod is fixedly connected to the support plate.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0016] 1. The high-temperature shrink-resistant protective film and its preparation device proposed in this invention involve the protective film passing through the upper end of the lower hot press component. After the protective film passes through the upper end of the lower hot press component, the movement of the protective film is paused. The first hydraulic cylinder is activated, causing the protective film to be pressed into a long strip of perforation. At the same time, rubber bands are laid on the worktable, and a movable dispensing device is used to apply adhesive to the upper rubber bands, causing the protective film to move again. When the long strip of perforation reaches the upper end of the lower hot press component, the protective film stops moving again. At the same time, the upper and lower rubber bands are laid flat. Then, the first and second hydraulic cylinders are activated. The grooving component grooves the protective film a second time, while the hot press component heat-presses the protective film and the rubber bands together. This process is repeated to complete the connection of the shrink-fit component for a roll of protective film, producing a protective film with good shrinkage properties.

[0017] 2. The high-temperature shrink-resistant protective film and its preparation device proposed in this invention are prepared by dividing the rubber band into a lower rubber band and an upper rubber band. The inner sides of both ends of the upper rubber band and the lower rubber band are connected to the original protective film through a connecting adhesive, and the middle part is directly connected through a connecting adhesive. The shrinkage of the protective film is improved by adding a rubber band. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall partial side view of the protective film of the present invention;

[0019] Figure 2 This is a partial top view of the protective film structure of the present invention;

[0020] Figure 3 This is a schematic diagram of the overall three-dimensional structure of the shrink-type protective agent preparation equipment of the present invention;

[0021] Figure 4 This is a three-dimensional structural diagram of the hot-pressing component of the present invention.

[0022] In the diagram: 1. Protective film; 11. Long perforated strip; 2. Connecting adhesive; 3. Rubber band; 31. Upper rubber band; 32. Lower rubber band; 4. Workbench; 41. Alignment groove; 42. Lower hot press component; 5. Support column; 6. Support plate; 7. Pressing groove component; 71. First hydraulic cylinder; 72. Connecting cone; 73. Press head; 8. Hot press component; 81. Second hydraulic cylinder; 82. Hollow center part; 83. Upper hot press head; 84. Movable rod. Detailed Implementation

[0023] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0024] Please see Figure 1-2 The high-temperature shrink-resistant protective film consists of a protective film 1 and rubber bands 3. The rubber bands 3 are divided into a lower rubber band 32 and an upper rubber band 31. The inner sides of the two ends of the upper rubber band 31 and the lower rubber band 32 are connected to the protective film 1 through a connecting adhesive 2, and the middle is directly connected through the connecting adhesive 2 for easy hot pressing. The rubber bands 3 are segmented on the protective film 1, each segment being at least one meter long. Each segment of the protective film 1 has a long strip perforation 11, the length of which is less than the width of the protective film 1, for the connecting adhesive 2 to pass through. This allows the rubber bands 3 to achieve a better shrinkage effect when the protective film 1 is stretched. The film is then hot-pressed together by a preparation device to increase the adhesion between the protective film 1 and the rubber bands 3.

[0025] Please see Figure 3-4 A high-temperature shrink-resistant protective film preparation device includes a workbench 4 and four support columns 5 set on the upper end of the workbench 4. The support columns 5 are used to support the support plate 6 at their upper end. The support plate 6 is provided with a grooving component 7 at the entrance end of the workbench 4. The grooving component 7 includes a first hydraulic cylinder 71 and a connecting cone 72 located at the lower end of the support plate 6. The lower end of the connecting cone 72 is provided with a pressing head 73 corresponding to the alignment groove 41 opened on one side of the upper end of the workbench 4. The grooving component 7 is arranged in a through-type manner with the end of the first hydraulic cylinder 71 located at the upper end of the support plate 6 and the end of the connecting cone 72 located at the lower end of the support plate 6, to perform grooving treatment of the protective film 1 with long strip perforations 11.

[0026] A hot pressing component 8 is provided at the outlet end of the support plate 6 near the workbench 4. The hot pressing component 8 includes a second hydraulic cylinder 81 and a hollow center part 82 located at the lower end of the support plate 6. The lower end of the hollow center part 82 is provided with an upper hot pressing head 83 corresponding to the lower hot pressing component 42 provided on the other side of the upper end of the workbench 4. The hot pressing component 8 and the pressing groove component 7 are connected to the support plate 6 in the same way, and the rubber band 3 connected to the protective film 1 by the connecting adhesive 2 is hot-pressed.

[0027] Both the upper ends of the connecting cone 72 and the hollow center part 82 are provided with movable rods 84. The upper ends of the movable rods 84 are fixedly connected to the support plate 6 to stabilize the connecting cone 72 and the hollow center part 82 when they move up and down.

[0028] Preparation principle: The protective film 1 enters from the end of the worktable 4 near the alignment groove 41. After the protective film 1 passes through the upper end of the lower hot press 42, the movement of the protective film 1 stops. The first hydraulic cylinder 71 is activated, which causes the protective film 1 to be pressed out with a long strip perforation 11. At the same time, the upper rubber band 31 is laid on the worktable 4, and the upper rubber band 31 is dispensed with glue by a movable glue dispensing device in the prior art, which causes the protective film 1 to move again. When the long strip perforation 11 reaches the upper end of the lower hot press 42, the protective film 1 stops moving again. At the same time, the upper and lower rubber bands 32 are laid flat. Then, the first hydraulic cylinder 71 and the second hydraulic cylinder 81 are activated. The groove pressing component 7 grooves the protective film 1 for the second time. At the same time, the hot press component 8 heat presses the protective film 1 and the rubber band 3 to connect them. This process is repeated to complete the connection of the shrink component of a roll of protective film 1.

[0029] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0030] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A high-temperature resistant shrinkable protective film comprising a protective base film (1), characterized in that: The protective original film (1) is connected with the rubber band (3) through the connecting glue (2), so that the protective original film (1) has shrinkability, and the adhesion between the protective original film (1) and the rubber band (3) is increased through hot-pressing connection of the preparation device; The rubber band (3) includes the lower rubber band (32) and the upper rubber band (31) connected with the lower rubber band (32) through the connecting glue (2) and located on the other side of the protective original film (1), and the inner sides of the two ends of the upper rubber band (31) and the lower rubber band (32) are connected with the protective original film (1) through the connecting glue (2), The preparation device includes a workbench (4) and a support column (5) arranged at the upper end of the workbench (4), and a support plate (6) is arranged at the inlet end of the workbench (4) and provided with a pressing groove component (7), the pressing groove component (7) includes a first hydraulic cylinder (71) and a connecting cone head (72) arranged at the lower end of the support plate (6), the lower end of the connecting cone head (72) is provided with a pressing head (73) corresponding to the alignment groove (41), the rubber band (3) is arranged on the protective original film (1) in sections, the segmented part of the protective original film (1) is pressed with a long perforation (11), and the pressing head (73) performs pressing groove processing on the long perforation (11) of the protective original film (1); The upper end of the workbench (4) is provided with the alignment groove (41) on one side, and the lower hot-pressing part (42) is arranged on the other side of the upper end; The support plate (6) is provided with a hot-pressing component (8) near the outlet end of the workbench (4), the hot-pressing component (8) includes a second hydraulic cylinder (81) and a hollow center part (82) arranged at the lower end of the support plate (6), the lower end of the hollow center part (82) is provided with an upper hot-pressing head (83) corresponding to the lower hot-pressing part (42), and the upper hot-pressing head (83) performs hot-pressing connection processing on the rubber band (3) connected with the connecting glue (2) on the protective original film (1).

2. The high temperature resistant shrinkable protective film according to claim 1, characterized in that: Each segment of the protective original film (1) is one meter long.

3. The high temperature resistant shrinkable protective film according to claim 1, wherein: The upper ends of the connecting cone head (72) and the hollow center part (82) are provided with movable rods (84), and the upper ends of the movable rods (84) are fixedly connected with the support plate (6).

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