Full adhesive film for laminated pet index sticker

Abstract

This utility model relates to the field of full-adhesive film technology and discloses a full-adhesive film for multi-layer PET index stickers, including a full-adhesive film body. The full-adhesive film body is composed of a hot melt adhesive layer, a 2.3-mil PET glossy film layer, a color printing layer, and a 5-mil PET glossy film layer. The full-adhesive film uses a composite of the 2.3-mil and 5-mil PET glossy film layers to increase the thickness of the PET full-adhesive film and improve its tear resistance. At the same time, a color printing layer is provided between the layers. The 5-mil PET glossy film layer is fully printed, and the hot melt adhesive layer is located at the top of the full-adhesive film body. The full-adhesive film for multi-layer PET index stickers of this utility model has good temperature resistance, heat resistance, no pollution, no adhesive residue, and aging resistance; the adhesive layer has good transparency, is easy to apply, and is not easy to peel off; the substrate has good strength and is easy to process; the product has good holding force during deep processing or bending processing; it is durable and can withstand a certain amount of wear and folding.

Description

Technical Field

[0001] This utility model relates to the field of adhesive film technology, specifically to an adhesive film for multilayer PET indexing. Background Technology

[0002] Plastic index stickers are office supplies primarily made of plastic, a material known for its durability and stability. Compared to paper index stickers, plastic index stickers are more water- and oil-resistant, less prone to breakage, and have a longer lifespan. Furthermore, the plastic material gives them a degree of transparency, allowing users to quickly find and locate information. Plastic index stickers feature vibrant colors and eye-catching markings, making them stand out in documents and materials for easy identification. They also come in various shapes and sizes to suit different needs. Clearly, plastic index stickers excel in practicality. Therefore, they can be easily affixed to various documents, books, or materials, helping users quickly mark and find important information. In addition, plastic index stickers are reusable, making them both environmentally friendly and economical. In daily life, plastic index stickers have a wide range of applications. For example, students can use them to mark key chapters or paragraphs in textbooks for easy review and retrieval; professionals can use them to manage complex project documents or reports, improving work efficiency.

[0003] However, existing plastic index stickers produce an odor during use, which can persist for months, affecting the user experience. They also tend to crack during use, impacting the appearance and usability of the journal. Furthermore, edges may peel off, affecting their durability and aesthetics. Therefore, a multi-layered PET index sticker with a full adhesive film is needed. Utility Model Content

[0004] The purpose of this invention is to provide a full-coverage adhesive film for multilayer PET indexing, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A multi-layered PET indexing film includes a full-film body, which is composed of a hot melt adhesive layer, a 2.3-mil PET glossy film layer, a color printing layer, and a 5-mil PET glossy film layer. The full-film body uses a composite of the 2.3-mil and 5-mil PET glossy film layers to increase the thickness of the PET full-film body and improve its tear resistance. At the same time, a color printing layer is provided between the layers. The 5-mil PET glossy film layer is fully printed, and the hot melt adhesive layer is located at the top of the full-film body.

[0007] Preferably, the uncoated side of the 2.3 mil PET glossy film layer is laminated with the printed side of the 5 mil PET glossy film layer, with the printed side sandwiched in the middle and the hot melt adhesive side facing outwards.

[0008] Preferably, the fully coated film is cut into rolls, and the finished film width is 41mm.

[0009] Preferably, a water-based polyurethane material is used to coat one side of the full-film body.

[0010] Preferably, the full-film is made by adding an appropriate amount of PET plastic deodorizer during the melt mixing stage of plastic production to remove odors from PET plastic products.

[0011] Compared with the prior art, the present invention has the following advantages: The multilayer PET indexing adhesive of the present invention uses a full adhesive film, which is resistant to temperature and heat, non-polluting, leaves no residue, and is resistant to aging; the adhesive layer has good transparency, is easy to stick, and is not easy to peel off; the substrate has good strength and is easy to process; the product has good holding force during deep processing or bending processing; it is durable and can withstand a certain amount of wear and folding. Attached Figure Description

[0012] Other features, objects, and advantages of this application will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0013] Figure 1 This is a schematic diagram of the structure of the full-film adhesive used for multilayer PET indexing in this utility model;

[0014] In the diagram: 1-Full-film body, 2-Hot melt adhesive layer, 3-2.3 mil PET glossy film layer, 4-Color printing layer, 5-5 mil PET glossy film layer. Detailed Implementation

[0015] The present application will now be described in further detail with reference to the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are for illustrative purposes only and are not intended to limit the scope of the utility model. Furthermore, it should be noted that, for ease of description, only the parts relevant to the utility model are shown in the accompanying drawings. In the embodiments of the present utility model, the different types of cross-sectional lines are not labeled according to national standards, nor do they specify material requirements for the components; they are used to distinguish the cross-sectional views of the components in the drawings.

[0016] Please see Figure 1A multilayer PET indexing film includes a full-film body 1, which is composed of a hot melt adhesive layer 2, a 2.3-micron PET glossy film layer 3, a color printing layer 4, and a 5-micron PET glossy film layer 5. The full-film body 1 uses a composite of the 2.3-micron PET glossy film layer 3 and the 5-micron PET glossy film layer 5 to increase the thickness of the PET full-film body 1 and improve its tear resistance. At the same time, a color printing layer 4 is provided between the multilayers. The 5-micron PET glossy film layer 5 is fully printed. The hot melt adhesive layer 2 is located at the top of the full-film body 1.

[0017] In this process, the uncoated side of the 2.3-filament PET glossy film layer 3 is laminated with the printed side of the 5-filament PET glossy film layer 5, with the printed side sandwiched in the middle and the hot melt adhesive side facing outwards.

[0018] The fully coated film is cut into rolls, and the finished film width is 41mm.

[0019] Among them, water-based polyurethane material was selected to coat one side of the full-film body 1.

[0020] The full-film coating removes odors from PET plastic products by adding an appropriate amount of PET plastic deodorizer during the melt mixing stage of plastic production.

[0021] It should be noted that, in the preparation of this multi-layer PET indexing film, firstly, a 2.3 mil PET glossy film is fully coated with hot melt adhesive, and then a 5 mil PET glossy film is fully printed. Next, the uncoated side of the 2.3 mil PET glossy film is laminated with the printed side of the 5 mil PET glossy film (the printed side is sandwiched in the middle, with the hot melt adhesive side facing outwards). Finally, it is cut into rolls, and the finished film width is 41mm.

[0022] This multi-layered PET index sticker uses a composite of a 2.3-mil PET glossy film layer 3 and a 5-mil PET glossy film layer 5 to increase the thickness of the PET film and improve its tear resistance. Simultaneously, a color-printed layer 4 is incorporated between the layers for a high-quality design and enhanced visual appeal. Different colored films facilitate document organization and categorization.

[0023] Then, water-based polyurethane material is used to coat one side of the PET film to ensure optimal adhesion. Simultaneously, coating thickness is controlled; during coating, the coating thickness is appropriately increased to improve adhesion and viscosity; and the coating temperature is increased to improve coating smoothness and evenness.

[0024] Simultaneously, a light-sensitive film with added PET plastic deodorizer is selected: This film removes odors from PET plastic products by adding an appropriate amount of PET plastic deodorizer during the melt-mixing stage of plastic production. The deodorizer adsorbs odor molecules and fixes them inside the deodorizer through chemical reaction or physical adsorption, thereby achieving the effect of odor removal.

[0025] The contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0026] The above description is merely a preferred embodiment of this application and an explanation of the technical principles employed. Those skilled in the art should understand that the scope of the utility model involved in this application is not limited to the technical solutions formed by specific combinations of the above-described technical features, but should also cover other technical solutions formed by arbitrary combinations of the above-described technical features or their equivalents without departing from the inventive concept. For example, technical solutions formed by substituting the above features with (but not limited to) technical features with similar functions disclosed in this application.

Claims

1. A full adhesive film for a layered PET index sticker, comprising a full adhesive film main body (1), characterized by: The full-adhesive film body (1) is composed of a hot melt adhesive layer (2), a 2.3-filament PET glossy film layer (3), a color printing layer (4), and a 5-filament PET glossy film layer (5). The full-adhesive film uses a composite of a 2.3-filament PET glossy film layer (3) and a 5-filament PET glossy film layer (5) to increase the thickness of the PET full-adhesive film and improve its tear resistance. At the same time, a color printing layer (4) is provided between the composite layers. The 5-filament PET glossy film layer (5) is printed on the entire surface. The hot melt adhesive layer (2) is located at the top of the full-adhesive film body (1).

2. The full adhesive film for the multi-layer PET index sticker according to claim 1, characterized in that: 2.3 The uncoated side of the PET light film layer (3) is laminated with the printed side of the 5-silk PET light film layer (5), with the printed side sandwiched in the middle and the hot melt adhesive side facing outward.

3. The full adhesive film for the multi-layer PET index sticker according to claim 1, characterized in that: The fully coated film is cut into rolls, and the finished film width is 41mm.

4. The full adhesive film for the multi-layer PET index sticker according to claim 1, characterized in that: Water-based polyurethane material was selected to coat one side of the full-film body (1).

5. The full adhesive film for the multi-layer PET index sticker according to claim 1, characterized in that: This full-film coating removes odors from PET plastic products by adding an appropriate amount of PET plastic deodorizer during the melt mixing stage of plastic production.

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