CN211847784U - Cotton layer structure of character form narrow limit VHB bubble returns - Google Patents

Abstract

The utility model provides a rectangular narrow-edge VHB foam layer structure, which comprises upper release paper, VHB foam, inner frame release paper and PET low-adhesive film; the VHB bubble cotton be the single-sided glued membrane cotton, the upper portion is glued, and upper strata from type paper and VHB bubble cotton are the font of returning, and upper strata from type paper glues in VHB bubble cotton top, and the inside casing is from type paper and PET low viscose film and is the rectangle, and the inside casing is from type paper and glues the inboard in the mouth that returns the font VHB bubble cotton, and the PET low viscose film is pasted to the inside casing from type paper below. And a notch cutter breaking line is arranged in the width direction of the Chinese character 'hui' of the upper layer separated paper and is used as a tearing position. The low mucosa of one deck PET and inside casing are from type paper more, have changed the form of tearing the hand simultaneously, prevent that the VHB bubble is cotton to be elongated, to the pulling force of single face glue during greatly reduced separation to further restrain gluey ductility, improve assembly efficiency.

Description

Cotton layer structure of character form narrow limit VHB bubble returns

Technical Field

The utility model relates to a LCD display technical field, in particular to return cotton layer structure of font narrow limit VHB bubble.

Background

Some devices, for example: need carry out the laminating of product with the bubble cotton on the user's glass of LCD product and the product chase of LCD, because the sealed or waterproof requirement of equipment and product, the shape of returning the font is often made to the bubble cotton, be completely unanimous with gluey shape except tearing the hand from the traditional design form of type paper (see figure 1), because the cotton edge of bubble is very narrow (width 1.4mm-2mm) and the ductility of VHB bubble is fabulous, when the separation of type paper and bubble cotton of adhesive side, can produce a tearing force to the bubble cotton, length just is not accorded with the drawing size when making the bubble cotton not bond with other material yet, lead to the poor assembly, and incidence and defective rate are high.

Disclosure of Invention

In order to solve the technical problem that the background art provided, the utility model provides a return cotton layer structure of font narrow limit VHB bubble has had one deck PET low mucosa and inside casing more from type paper, has changed the form of tearing the hand simultaneously, prevents the VHB bubble cotton to lengthen, to the pulling force that the single face was glued during greatly reduced separation to further restrain gluey ductility, improve assembly efficiency.

A rectangular narrow-edge VHB foam layer structure comprises upper release paper, VHB foam, inner frame release paper and a PET low-adhesive film; the VHB bubble cotton be the single-sided glued membrane cotton, the upper portion is glued, and upper strata from type paper and VHB bubble cotton are the font of returning, and upper strata from type paper glues in VHB bubble cotton top, and the inside casing is from type paper and PET low viscose film and is the rectangle, and the inside casing is from type paper and glues the inboard in the mouth that returns the font VHB bubble cotton, and the PET low viscose film is pasted to the inside casing from type paper below.

And a notch cutter breaking line is arranged in the width direction of the Chinese character 'hui' of the upper layer separated paper and is used as a tearing position.

The width of the VHB foam is 1.4-2 mm.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the PET low-viscosity film is bonded below the foam to increase the supporting hardness of the foam; meanwhile, an inner frame release paper with a slightly smaller size than the inner side is bonded above the low adhesive film and on the inner side of the opening of the foam, so that the bending strength and the torsional strength of the PET are further increased. Therefore, when the top release paper is separated from the foam, the PET low-adhesive film and the inner frame release paper at the bottom can generate a force resisting the extension deformation of the PET low-adhesive film and the inner frame release paper on the single-sided adhesive glue-free side, and the VHB foam is prevented from being elongated.

2. The position and the form of the tearing hand are also improved, the hand can be taken out after the traditional corner is removed, and meanwhile, a notch is formed in the width direction of the top zigzag release paper. When the tearing hand is pulled to separate the release paper from the Chinese character hui-shaped foam, the traditional tearing hand form is compared, and the peeling force is assembled from the original length direction and the original width direction, the Chinese character hui-shaped release paper is peeled from the tearing hand, and the Chinese character hui-shaped foam with the glue on the single side is attached to the material to be bonded while the release paper is peeled; because the foam tape rubber surface is arranged below the notch, the pulling force on the single-sided rubber during separation is greatly reduced in the form, and the ductility of the rubber is further inhibited.

Drawings

FIG. 1 is a prior art VHB foam layer structure diagram;

fig. 2 is the structure diagram of the VHB foam layer of the present invention.

In the figure: 1-VHB foam 2-prior art upper release paper 3-prior art tear 4-prior art upper release paper 5-incision line 6-inner frame release paper 7-PET low mucosa.

Detailed Description

The following detailed description of the embodiments of the present invention will be made with reference to the accompanying drawings.

Fig. 1 is a narrow-side VHB foam layer structure in the prior art, the VHB foam 1 only has upper release paper 2, and the upper release paper 2 has a tearing handle 3 protruding from the edge, and this structure will generate a tearing force to the foam when the release paper attached with the adhesive surface is separated from the foam, so that the length of the foam is not consistent with the drawing size before being bonded with other materials, resulting in poor assembly and extremely high occurrence rate and defective rate.

As shown in fig. 2, the VHB foam layer structure with a square-shaped narrow side of the present invention comprises upper release paper 4, VHB foam 1, inner frame release paper 6 and PET low-viscosity film 7; VHB bubble cotton 1 be the one-sided adhesive tape cotton, the upper portion is glued, and upper strata from type paper 4 and VHB bubble cotton 1 are the font of returning, and upper strata from type paper 4 glues in VHB bubble cotton 1 top, and the inside casing is from type paper 6 and PET low viscidity membrane 7 and is the rectangle, and the inside casing is from type paper 6 and is slightly less than the font of returning inside casing size of VHB bubble cotton 1, glues in the inboard of the font of returning of VHB bubble cotton 1, and the PET low viscidity membrane 7 is pasted to the inside casing from type paper 6 below.

And a notch cutter line 5 is arranged in the width direction of the Chinese character 'hui' of the upper layer separated paper 4 and is used as a tearing position.

The width of the VHB foam 1 is 1.4-2 mm.

The low-viscosity PET film 7 is bonded below the VHB foam 1 and is used for increasing the supporting rigidity of the foam. Meanwhile, an inner frame release paper 6 with a slightly smaller size than the inner side is bonded above the PET low-viscosity film 7 and on the inner side of the opening of the foam, so that the bending strength and the torsional strength of the PET are further increased. Therefore, when the top release paper is separated from the foam, the PET low-adhesive film 7 and the inner frame release paper 6 at the bottom generate a force resisting the extension deformation of the single-sided adhesive glue-free side, and the VHB foam 1 is prevented from being elongated.

The position and the form of the tearing hand are also improved, the traditional corner part can be removed, and meanwhile, a notch 5 is formed in the width direction of the top square-shaped upper layer release paper 4 to serve as the tearing hand. When the tearing hand is pulled to separate the upper release paper 4 from the reversed-square VHB foam 1, the traditional tearing hand 3 is compared in form, and the reversed-square release paper 4 is peeled from the original direction when the peeling force is assembled from the original direction of length and width, and the reversed-square VHB foam 1 with the glue on the reversed-square single surface is attached to the adhered material while the release paper 4 is peeled. Because the VHB foam 1 is provided with the adhesive surface below the notch 5, the pulling force on the single-sided adhesive during separation is greatly reduced in the form, and the ductility of the adhesive is further inhibited.

The above embodiments are implemented on the premise of the technical solution of the present invention, and detailed implementation and specific operation processes are given, but the protection scope of the present invention is not limited to the above embodiments. The methods used in the above examples are conventional methods unless otherwise specified.

Claims (2)

1. A rectangular narrow-edge VHB foam layer structure is characterized by comprising upper release paper, VHB foam, inner frame release paper and PET low-adhesive film; the VHB foam is single-sided adhesive foam, the upper part of the VHB foam is provided with adhesive, both upper release paper and the VHB foam are in a shape like a Chinese character 'hui', the upper release paper is adhered above the VHB foam, both inner frame release paper and a PET low-viscosity film are rectangular, the inner frame release paper is adhered to the inner side of a hui-shaped opening of the VHB foam, and the PET low-viscosity film is adhered below the inner frame release paper;

and a notch cutter breaking line is arranged in the width direction of the Chinese character 'hui' of the upper layer separated paper and is used as a tearing position.

2. The VHB foam layer structure with clip-shaped narrow sides according to claim 1, wherein the width of the VHB foam is 1.4mm-2 mm.

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