A composite process for covering film

Abstract

A composite process for a covering film, comprising the following steps: providing a tear film and a fixed film; respectively bonding parts of the fixed film to both sides of the tear film; providing a backing paper; bonding the tear film bonded with the fixed film to the release paper surface of the backing paper; providing a waste discharge film; bonding the waste discharge film to one of the two fixed films; performing a first die-cutting; tearing off the waste discharge film to expose a die-cutting opening on one side of the tear film; providing a product film; bonding and covering the product film on the other of the two fixed films, the tear film, and the backing paper; performing a second die-cutting: cutting out the required covering film on the product film, and forming the covering film only from the product film and the tear film through die-cutting; tearing off the product film other than the covering film to obtain the covering film. This composite process can be performed by a laminating machine for continuous laminating, die-cutting, and waste discharge, so that the covering film can be prepared at a low cost.

Description

Technical Field

[0001] The invention relates to a preparation technology of a protective film, in particular to a composite process of a covering film. Background Art

[0002] Cars are becoming more and more an indispensable means of transportation for people. In order to improve the appearance of cars, there are more and more external decorative parts. The most common decoration is the increase in chrome strips. For example, door frames, window frames, air intake grilles, etc. all use a large number of decorative strips. Car decoration refers to the addition of some accessories to improve the appearance of the car surface and interior. The added accessories are called decorations. According to the authoritative definition of CAR2100, car decoration refers to the addition or replacement of some accessories to improve the appearance, practicality and comfort of the car surface and interior. This behavior is called car decoration.

[0003] Before using these decorative strips, the side facing the user needs to be covered with a protective film. When in use, the protective film is torn off and then attached to the corresponding position to complete the assembly of the decorative strip. These protective films also need to be cut according to different models and formed into different shapes for use on different vehicles.

[0004] However, how to attach this protective film to the automotive part without contaminating its adhesive layer is a problem that the industry needs to consider. At present, the method used is to set an ear on the side of the protective film with the adhesive layer for manual or equipment clamping. The ear should be a non-stick layer added to the side of the protective film with the adhesive layer. After the ear is clamped by manual or equipment, the protective film can be attached to the automotive part without contaminating the adhesive layer. Therefore, how to quickly and cost-effectively set the above-mentioned ear on the side of the adhesive layer with the adhesive layer has become a problem that the industry must solve. It can be imagined that it is impossible to attach the non-stick layer manually because that will result in too high a cost. Summary of the invention

[0005] In view of this, the present invention provides a composite process for a covering film that can solve the above-mentioned problems.

[0006] A composite process for a covering film comprises the following steps:

[0007] A tearing film and two fixing films are provided, wherein no adhesive is provided on both sides of the tearing film, and an adhesive is provided on one side of the fixing film;

[0008] Bonding parts of the two fixed films to the two sides of the tearing film respectively, and the two fixed films are arranged at intervals;

[0009] Providing a base paper, wherein the base paper has a release paper surface;

[0010] Adhere the tear-off film with the fixing film to the release paper surface of the base paper so that the tear-off film is fixed to the base paper through the fixing film;

[0011] Providing a waste discharge film, wherein one side of the waste discharge film is provided with an adhesive;

[0012] Bonding the waste discharge film to one of the two fixed films;

[0013] Performing the first die-cutting: die-cutting at least one independent tearing ear on the tearing film between the two fixed films;

[0014] Tearing off the waste discharge film to expose the die cut on one side of the tear film;

[0015] Providing a product film, wherein one side of the product film is provided with an adhesive;

[0016] The product film is bonded and covered on the other of the two fixed films, the tear film, and the base paper;

[0017] Performing a second die-cutting: cutting out a required covering film on the product film, so that the covering film is formed only by the product film and the tear film through die-cutting;

[0018] The product films other than the cover film are torn off to prepare a cover film.

[0019] Furthermore, the covering film consists of an adhesive portion and a tear-off portion, the adhesive portion is made of the product film, and the tear-off portion is formed by bonding the product film and the tear-off film.

[0020] Furthermore, the width of the tearing portion is between 1 cm and 2 cm to facilitate finger gripping.

[0021] Furthermore, the fixing film is used to fix the hand-tear film on the base paper.

[0022] Furthermore, during the first die-cutting, the tear-off film is cut to separate the tear-off film from one of the two fixed films.

[0023] Furthermore, after the first die-cutting, the tearing film is still bonded to the other of the two fixing films.

[0024] Furthermore, two tear-off films are fixed on one base paper, and four fixed films are respectively adhered to both sides of the tear-off films in pairs.

[0025] Furthermore, two rows of the covering films are formed by a second die-cutting.

[0026] Furthermore, the waste discharge film has a different color from the hand-tear film for distinction.

[0027] Furthermore, the prepared covering films are arranged at intervals from each other.

[0028] Compared with the prior art, the composite process of the covering film provided by the present invention successfully achieves the purpose of automatically and continuously preparing the covering film through reasonable process technology and the assistance of auxiliary paper. Specifically, firstly, a tearing film without adhesive on both sides and two fixed films with adhesive on one side are provided, and parts of the two fixed films are bonded to the two sides of the tearing film at intervals, and the remaining parts of the two fixed films are bonded to the base paper, so as to achieve the purpose of fixing the tearing film on the base paper. Then, a waste discharge film is bonded to one of the fixed films, and then the first die cutting is performed. The first die cutting can cut out one side of the shape of the required ear. Finally, the waste discharge film is torn off to complete the molding of one side of the ear. Then, the product film is covered on the remaining part, and the product film covers the other fixed film and the tearing film that have not been torn off, as well as the base paper, and then the second die cutting is performed to cut out the required product shape to form the covering film. The covering film should only consist of the product film and the tear film, so that in the process of tearing off the remaining waste, the remaining fixed film and the tear film waste can be torn off, thereby completing the preparation of the covering film. The above processes can all be performed by a laminating machine for continuous lamination, die-cutting, and waste discharge, so that the covering film can be prepared at a low cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 A schematic structural diagram of a covering film to be prepared by a composite process for a covering film provided by the present invention.

[0030] Figure 2 The present invention provides a flow chart of a composite process for a covering film.

[0031] Figures 3 to 7 for Figure 2 A physical display diagram of each step in the composite process of the covering film.

[0032] Figure 8 for Figure 2 Cross-sectional view of the covering film prepared by the composite process of the covering film. DETAILED DESCRIPTION

[0033] The specific embodiments of the present invention are further described in detail below. It should be understood that the description of the embodiments of the present invention herein is not intended to limit the protection scope of the present invention.

[0034] First of all, it should be noted that the composite process of the covering film provided by the present invention can be prepared on a laminating machine to achieve automation. The laminating machine itself is a prior art, which has a wide range of applications in the fields of label preparation, paper printing, etc. It should be a prior art and will not be described in detail here. Therefore, those skilled in the art can use the laminating machine to prepare it as long as they understand the composite process flow of the present invention. Figure 1 As shown, the covering film to be prepared by the present invention is composed of an adhesive portion 10 and a tearing portion 20. One side of the adhesive portion 10 is provided with an adhesive, such as a self-adhesive sticker, which is used to cover parts such as automobile decorations to protect the parts. The tearing portion 20 is used to be grasped by a human or mechanical hand for taking and placing, so both sides of the tearing portion 20 should be free of adhesive. This is a prior art and will not be described in detail here.

[0035] like Figure 2 As shown, it is a flow chart of the composite process of the covering film provided by the present invention. The composite process of the covering film provided by the present invention comprises the following steps:

[0036] STEP 101: Provide a tear film 30 and two fixed films 40, wherein no adhesive is provided on both sides of the tear film 30, and an adhesive is provided on one side of the fixed film 40;

[0037] STEP 102: respectively adhere two portions of the fixing films 20 to the two sides of the tearing film 10, and the two fixing films 20 are arranged at intervals; Figure 3 shown.

[0038] STEP 103: Provide a base paper 50, wherein the base paper 50 has a release paper surface;

[0039] STEP 104: Adhere the tear film 30 bonded with the fixing film 40 to the release paper surface of the base paper 50 so as to fix the tear film 30 on the base paper 50 through the fixing film 40;

[0040] STEP 105: Provide a waste discharge film 60, wherein one side of the waste discharge film 60 is provided with an adhesive;

[0041] STEP 106: Bond the waste discharge film 60 to one of the two fixed films 40; Figure 4 shown.

[0042] STEP 107: Perform the first die-cutting: die-cut at least one independent tearing ear on the tearing film 30 between the two fixed films 40;

[0043] STEP 108: Tear off the waste discharge film 60 to expose the die cut on one side of the tear film 30; Figure 5shown.

[0044] STEP 109: Provide a product film 70, wherein an adhesive is disposed on one side of the product film 70;

[0045] STEP 110: Adhere the product film 70 to cover the other of the two fixed films 40, the tear film 30, and the backing paper 50; Figure 6 Shown

[0046] STEP 111: Perform a second die-cutting: cut out the required covering film on the product film 70, and die-cut the covering film so that the covering film is formed only by the product film 70 and the tear film 30;

[0047] STEP 112: Tear off the product film 70 other than the covering film to obtain a covering film. Figure 7 Shown

[0048] In step STEP101, the tearing film 30 is used to prepare the tearing part 20, so there should be no adhesive such as glue on both sides of the tearing film 30. However, the covering film of the finished product is adhered to a release paper for storage and transportation, so the tearing film 30 should be fixed on the release paper during the preparation process. In this embodiment, the release paper is the base paper 50. The component that fixes the tearing film 30 is the fixed film 20. Each tearing film 30 requires two fixed films 40 to fix it, so as to expose the middle part and fit it with the product film 70 to prepare the covering film. Therefore, one side of the fixed film 20 should have an adhesive such as glue. Of course, it is conceivable that, in order to improve the preparation efficiency, two spaced tearing films 30 can be set on a base paper 50. Therefore, four fixed films 40 are required for fixing.

[0049] In step STEP102, when bonding the fixed film 40 and the hand-tear film 30, part of the fixed film 40 should be bonded to the hand-tear film 30, and the rest of the fixed film 40 should be bonded to the backing paper 50, so that the hand-tear film 30 can be fixed to the backing paper 50. It can be imagined that the distance between the two fixed films 40 should be slightly larger than the width of the hand-tear portion 20 to facilitate die-cutting.

[0050] In step STEP 103 , the base paper 50 may be made of tear-resistant kraft paper, with a release layer provided on one side thereof, which is a prior art and will not be described in detail herein.

[0051] In step STEP 104 , one or two tear films 30 may be directly fixed on the base paper 50 by a laminating machine.

[0052] In step STEP105 , the color of the waste discharge film 60 may be blue to distinguish it from the hand-tear film 30 and the fixed film 40 . Therefore, the color of the waste discharge film 60 is different from that of the hand-tear film 30 .

[0053] In step STEP107, during the first die-cutting, one side of the tearing portion 20 is cut out of the tearing film 30, while the other side is still fixed by another fixed film 40, so as to facilitate the process. Therefore, during the first die-cutting, the tearing film 30 is cut to separate the tearing film 30 from one of the two fixed films 40. Therefore, after the first die-cutting, the tearing film 30 is still bonded to the other of the two fixed films 40. After the first die-cutting, in order to discharge waste, a waste discharge film 60 is bonded to the fixed film 40 that needs to be torn off, so as to facilitate automatic waste discharge by the laminating machine.

[0054] In steps STEP106 and STEP108, the waste discharge film 60 should be adhered to the fixed film 40 that needs to be torn off, so that in the subsequent process, the torn fixed film 40 and the die-cut tear film 30 can be torn off together with the waste discharge film 60.

[0055] In step STEP 109 , the product film 70 can be provided according to actual needs, but one side thereof should have an adhesive such as a sticker because the side needs to be bonded to an adherend.

[0056] In step STEP110, the product film 70 is adhered to the base paper 50, and also covers the remaining fixed film 40 and the tear film 30. It can be imagined that the adhesive portion 10 to be provided on the product film 70 should be located on the side of the torn fixed film 40.

[0057] In step STEP111, during the second die cutting, the entire covering film is cut out. During die cutting, the cutter should cut the tear film 30 and the product film 70, and should not cut the fixed film 40 that has not been torn off, so as to avoid the fixed film 40 remaining in the finished product.

[0058] At the same time, through the second die-cutting, the covering film is formed by only the product film 70 and the tearing film 30. In the prepared covering film, it is composed of the adhesive portion 10 and the tearing portion 20. The adhesive portion 10 is made of the product film 70, and the tearing portion 20 is formed by bonding the product film 70 and the tearing film 30. The width of the tearing portion 20 is between 1 cm and 2 cm to facilitate finger gripping. Of course, it does not need to be too wide to avoid waste.

[0059] It is conceivable that when there are two tear-off films 30, two rows of the covering films will be formed by the second die cutting. The covering films prepared should also be arranged at intervals to avoid mutual influence during use.

[0060] In step STEP112, the product film 70 other than the covering film is torn off, and the finished covering film is left on the base paper 50. Then, the finished covering film can be rolled up and packaged, so that it can be transported to the site for use. The cross-sectional view of the prepared covering film is shown in FIG. Figure 8 shown.

[0061] During use, since the tearing hand portion 20 is not bonded to the base paper, it is convenient for a robot or a human to pick it up, especially convenient for a robot to pick it up without being bonded to the robot, so as to automate the assembly of the entire automobile, etc.

[0062] Compared with the prior art, the composite process of the covering film provided by the present invention successfully achieves the purpose of preparing the covering film in an automated and continuous manner through a reasonable process and the assistance of auxiliary paper. Specifically, firstly, a tearing film 30 without adhesive on both sides and two fixed films 40 with adhesive on one side are provided, parts of the two fixed films 40 are bonded to both sides of the tearing film 30 at intervals, and the remaining parts of the two fixed films 40 are bonded to the base paper 50, so as to achieve the purpose of fixing the tearing film 30 on the base paper 50. Then, a waste discharge film 60 is bonded to one of the fixed films 40, and then the first die cutting is performed. The first die cutting can cut out one side of the shape of the required ear. Finally, the waste discharge film 60 is torn off to complete the molding of one side of the ear. Then, a product film 70 is covered on the remaining part, and the product film 70 covers another fixed film 40 and the tearing film 30 that are not torn off, as well as the base paper 50, and then a second die cutting is performed to cut out the required product shape to form the covering film. The covering film should only consist of the product film 70 and the tear film 30, so that in the process of tearing off the remaining waste, the remaining fixed film 40 and the waste of the tear film 30 can be torn off, thereby completing the preparation of the covering film. The above processes can all be performed by a laminating machine for continuous lamination, die-cutting, and waste discharge, so that the covering film can be prepared at a low cost.

[0063] The above are only preferred embodiments of the present invention and are not intended to limit the protection scope of the present invention. Any modification, equivalent substitution or improvement within the spirit of the present invention is included in the scope of the claims of the present invention.

Claims

1. A composite process for a covering film, comprising the following steps: A tearing film and two fixed films are provided, wherein no adhesive is provided on both sides of the tearing film, and an adhesive is provided on one side of the fixed film; Bonding parts of the two fixed films to the two sides of the tearing film respectively, and the two fixed films are arranged at intervals; Providing a base paper, wherein the base paper has a release paper surface; Adhere the tear-off film with the fixing film to the release paper surface of the base paper so that the tear-off film is fixed to the base paper through the fixing film; Providing a waste discharge film, wherein one side of the waste discharge film is provided with an adhesive; Bonding the waste discharge film to one of the two fixed films; Performing the first die-cutting: die-cutting at least one tearing ear that is independent of each other on the tearing film between the two fixed films, and during the first die-cutting, the tearing ear is cut on the tearing film to separate the tearing film from one of the two fixed films, and after the first die-cutting, the tearing film is still bonded to the other of the two fixed films; Tearing off the waste discharge film to expose the die cut on one side of the tear film; Providing a product film, wherein one side of the product film is provided with an adhesive; The product film is bonded and covered on the other of the two fixed films, the tear film, and the base paper; Performing a second die-cutting: cutting out a required covering film on the product film, so that the covering film is formed only by the product film and the tear film through die-cutting; The product film other than the covering film is torn off to obtain the covering film, wherein the covering film is composed of an adhesive portion and a tearing portion, wherein the adhesive portion is made of the product film, and the tearing portion is formed by bonding the product film and the tearing film.

2. The composite process of covering film according to claim 1, characterized in that: The width of the tearing portion is between 1 cm and 2 cm to facilitate finger gripping.

3. The composite process of covering film according to claim 1, characterized in that: The fixing film is used to fix the hand-tear film on the base paper.

4. The composite process of the covering film according to claim 1, characterized in that: Two tear-off films are fixed on one base paper, and four fixed films are respectively adhered to two sides of the tear-off films.

5. The composite process of covering film according to claim 4, characterized in that: Two rows of the cover film are formed by a second die cutting.

6. The composite process of covering film according to claim 1, characterized in that: The waste discharge film has a different color from the hand-tear film for distinction.

7. The composite process of covering film according to claim 1, characterized in that: The prepared covering films are arranged at intervals from each other.

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