Block-up strip for die cutting product

Abstract

The invention relates to a block-up strip for a die-cutting product. The die-cutting product at least comprises a soft main material and protective layers attached to the upper surface and the lower surface of the soft main material. Wherein the heightening strips are also arranged between the upper protection layer and the lower protection layer and located between the adjacent soft main materials, the function of isolating and supporting the upper protection layer and the lower protection layer is achieved, and the thickness of the heightening strips is not smaller than that of the soft main materials. And one of two surfaces, in contact with the upper protective film and the lower protective film, of the heightening strip is an adhesive surface, and the other surface is an anti-adhesive surface. And the heightening strip is formed by compounding and die-cutting a PET release film and a double-sided adhesive layer attached to the non-release surface of the PET release film. The heightening strip is applied to a die cutting product of a soft main material, the probability that the main material product deforms due to pressure is reduced, and the yield of the product is increased; in addition, the heightening strip is provided with the sticky face and the non-sticky face, the position of the heightening strip can be kept stable, displacement of the main material caused by contact with the main material is avoided, the heightening strip has good peelability, and convenience is brought to use.

Description

Technical Field

[0001] The invention relates to the technical field of precision die-cut products, in particular to a padding strip used for die-cut products. Background Art

[0002] Many die-cut products are made of soft materials and are prone to deformation during storage and transportation. The conventional solution is to deliver the product to customers in time after production before it deforms, or to add extra materials on both sides of the product to extend it and reduce the pressure on the product during storage and transportation. However, if the padding strip itself is deformed or displaced, its pressure-bearing function will be affected, and it will lose its function of protecting the product. In addition, the existing padding strips are not convenient to use. Summary of the invention

[0003] The purpose of the present invention is to address the above-mentioned deficiencies in the prior art and to provide a padding strip for easily deformed die-cut products to solve the problem that the die-cut main material is compressed and deformed by the adsorption force between the protective layers or external forces during transportation or storage.

[0004] The technical solution adopted by the present invention is: a padding strip for die-cut products, the die-cut products at least include a soft main material and protective layers attached to the upper and lower surfaces thereof; wherein the padding strip is also arranged between the upper and lower protective layers and located between adjacent soft main materials, playing the role of isolating and supporting the upper and lower protective layers, and the thickness of the padding strip is not less than the thickness of the soft main material; of the two sides of the padding strip in contact with the upper and lower protective films, one side is a sticky side and the other side is an anti-sticky side.

[0005] The distance between the raising strip and the adjacent soft main material is not more than 1.5mm, 1mm-1.5mm is more appropriate, and too far a distance will affect the raising and supporting effects.

[0006] The difference between the thickness of the padding strip and the thickness of the soft main material is 0.05mm-0.5mm, that is, the thickness difference does not need to be too large, otherwise the protective film will easily separate from the main material, affecting the protective effect of the protective film on the main material; preferably 0.15mm.

[0007] Preferably, the tensile strength of the heightening strip is greater than or equal to 160 Mpa.

[0008] Preferably, of the two surfaces of the raising strip in contact with the upper and lower protective films, one surface is a sticky surface and the other surface is an anti-sticky surface.

[0009] The heightening strip is formed by composite die-cutting of a PET release film and a double-sided adhesive layer attached to a non-release surface of the PET release film.

[0010] Preferably, the peel strength of the adhesive surface of the raising strip is greater than or equal to 3.2 N / cm.

[0011] Preferably, the anti-adhesive surface peeling force of the raising strip is less than or equal to 49mN / 25mm.

[0012] The padding strip of the present invention is used in die-cut products of soft main materials, which is beneficial to reducing the probability of deformation of the main material products due to pressure and improving the yield of the products; in addition, the padding strip itself has a sticky surface and a non-sticky surface, which can not only maintain its own position stable and avoid contact with the main material and displacement of the main material, but also has good removability, which brings convenience to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 is a schematic diagram of a heightening strip according to an embodiment of the present invention; Figure 2 , Figure 3 They are respectively schematic diagrams of decomposition and assembly of a die-cut product of an embodiment of the present invention. DETAILED DESCRIPTION

[0014] like Figure 1-Figure 3 As shown, the present invention describes a padding strip for die-cut products, and the die-cut products at least include a soft main material 1 and protective layers attached to the upper and lower surfaces thereof. In this embodiment, the protective layers are an upper release film 2 and a lower release film 3; the soft main material 1 is a circular hot melt adhesive, and its thickness is 0.3mm, and its ring width is 0.25mm, that is, the thickness is greater than the ring width, so it is easy to deform, and the lower release film 3 is also formed with a through hole 31 corresponding to the inner ring of the annular soft main material 1; in this embodiment, the padding strip 4 is also arranged between the upper and lower protective layers, namely the upper release film 2 and the lower release film 3, and is located between adjacent soft main materials 1, which plays the role of isolating and supporting the upper release film 2 and the lower release film 3, and the thickness of the padding strip 4 is not less than the thickness of the soft main material 1. Of the two sides of the raising strip 4 that contact the upper and lower protective films, one side is a sticky side and the other side is an anti-sticky side. In the present embodiment, the raising strip 4 is die-cut from a PET release film 41, and its release side serves as an anti-sticky side, which is compounded with the lower release film 3 downward, while the non-release side is compounded with a double-sided adhesive layer 42, and the sticky side of the raising strip 4 is compounded with the upper release film 2, thereby forming a die-cut product containing a raising layer 4.

[0015] When the die-cut product of this embodiment is produced, the hot-melt adhesive layer is compounded with the lower release film and then die-cut to form a ring-shaped soft main material 1 and a lower release film with holes, which is a semi-finished product A. The PET release film is then compounded with the double-sided adhesive layer and die-cut into strips, and then compounded with the upper release film at equal intervals through the double-sided adhesive layer to form a semi-finished product B. The semi-finished product A and the semi-finished product B can then be aligned and combined.

[0016] The distance between the raising strip 4 and the adjacent soft main material 1 is not greater than 1.5 mm, and 1 mm-1.5 mm is more appropriate. Too far a distance will affect the raising and supporting effects.

[0017] The difference between the thickness of the raising strip 4 and the thickness of the soft main material is 0.05mm-0.5mm, that is, the thickness difference does not need to be too large, otherwise the protective film will easily separate from the main material, affecting the protective effect of the protective film on the main material; in this embodiment, the thickness of the PET release film 41 of the raising strip 4 is 0.2mm, the thickness of the double-sided adhesive layer 42 is 0.15mm, and the overall thickness of the raising strip 4 is 0.35mm, which is 0.05mm higher than the thickness of the hot melt adhesive of the soft main material 1 of 0.3mm.

[0018] Preferably, the tensile strength of the raising strip 4 is greater than or equal to 160 Mpa, and it has strong compression and tension resistance to achieve an ideal supporting effect; the peel strength of the adhesive surface of the raising strip 4 is greater than or equal to 3.2 N / cm, so as to fix the position of the raising strip 4 itself to avoid displacement and contact with the soft main material 1; the peel force of the anti-adhesive surface of the raising strip 4 is less than or equal to 49 mN / 25 mm, so that the raising strip 4 as a whole has better removability and is easy to use.

[0019] In summary, the padding strip of the present invention is used in die-cut products of soft main materials, which is beneficial to reduce the probability of deformation of the main material products due to pressure and improve the yield of the products; in addition, the padding strip itself has a sticky surface and a non-sticky surface, which can not only maintain its own position stable and avoid contact with the main material and displacement of the main material, but also has good removability, which brings convenience to use.

[0020] The above embodiments are merely exemplary embodiments used to illustrate the principles of the present invention, but the present invention is not limited thereto. For those skilled in the art, various modifications and improvements can be made without departing from the spirit and essence of the present invention, and these modifications and improvements are also considered to be within the scope of protection of the present invention.

Claims

1. A heightening strip for die-cut products, the die-cut products at least comprising a soft main material and protective layers attached to the upper and lower surfaces thereof; characterized in that: The raising strip is also arranged between the upper and lower protective layers and between adjacent soft main materials, and the thickness of the raising strip is not less than the thickness of the soft main material; of the two sides of the raising strip that contact the upper and lower protective films, one side is a sticky side and the other side is an anti-sticky side.

2. The heightening strip for die-cutting products according to claim 1, characterized in that: The distance between the heightening strip and the adjacent soft main material is no more than 1.5 mm.

3. The padding strip for die-cutting products according to claim 1, characterized in that: The difference between the thickness of the heightening strip and the thickness of the soft main material is 0.05mm-0.5mm.

4. The padding strip for die-cutting products according to claim 1, characterized in that: The tensile strength of the heightening strip is greater than or equal to 160 Mpa.

5. The padding strip for die-cutting products according to claim 1, characterized in that: The heightening strip is formed by composite die-cutting of a PET release film and a double-sided adhesive layer attached to a non-release surface of the PET release film.

6. The heightening strip for die-cutting products according to claim 5, characterized in that: The peeling strength of the adhesive surface of the padding strip is greater than or equal to 3.2N / cm.

7. The heightening strip for die-cutting products according to claim 5, characterized in that: The anti-adhesive surface peeling force of the pad strip is less than or equal to 49mN / 25mm.

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