CN210759301U - Inflatable product with drawstring - Google Patents

Abstract

The utility model discloses an inflatable product with a drawstring, which comprises an airbag body and the drawstring; the adhesive sheet of the drawstring or the fixing drawstring has an adhesive surface and a non-adhesive surface; the drawstring and the bag body are simultaneously extruded and bonded by a method including hot stamping or high-frequency welding, after the bonding operation is finished, the bonding surface is bonded to the bag body at a preset high temperature, and the surfaces extruded on the non-bonding surface are not bonded with each other; the utility model converts the production process of the inflatable product with the drawstring which is originally manufactured by multi-step three-dimensional ironing into a plane production process which can be ironed for one time; the pneumatic product can be produced in a mechanized, automatic, batch, continuous and uninterrupted flow line. The prepared inflatable product has the advantages of low comprehensive cost, high product consistency, stable and reliable quality, high production efficiency and the like, and has good application prospect and wide application range.

Description

Inflatable product with drawstring

Technical Field

The utility model relates to an aerify goods automation, mass production technical field, more specifically the utility model relates to an aerify pad with stretching strap that says so.

Background

The inflatable cushions in the current market are mainly divided into two types: with and without a draw tape.

The air cushion without the pull belt can be pressed out by a die at one time, so that the labor cost is low, and the production efficiency is high; however, the thickness of the finished product after inflation is low, and the size of the product before inflation and after inflation is greatly changed, so that the product is only suitable for being made into products with small thickness.

The air cushion with the drawstring needs to be manually bonded to the air cushion body step by step, the steps are multiple, the process is complicated, the labor cost is high, the quality stability is not easy to control, and the automatic production is difficult to realize.

Therefore, it is an urgent problem for those skilled in the art to provide a structure for conveniently and quickly fixing a drawstring to the body of an inflatable product.

SUMMERY OF THE UTILITY MODEL

In view of the above, the present invention provides an inflatable product with a drawstring, which aims to solve the above problems.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

an inflatable article with a pull strap comprising: a bag body and a drawstring;

the capsule body comprises a capsule body upper sheet and a capsule body lower sheet which are arranged up and down correspondingly;

the drawstring is positioned between the upper bag body sheet and the lower bag body sheet, and the drawstring or the adhesive sheet for fixing the drawstring is provided with an adhesive surface and a non-adhesive surface; the bonding surface is bonded with the upper bag body sheet and the lower bag body sheet respectively, the non-bonding surfaces are not bonded together after being pressed, the non-bonding surfaces can be separated from each other after being pressed, and a drawstring structure for limiting the separation gap between the upper bag body sheet and the lower bag body sheet is formed after the non-bonding surfaces are stretched.

Preferably, in the inflatable product with the drawtape, the drawtape comprises a drawtape body and an isolation layer; the drawstring body is of a cylindrical structure; the isolating layer is filled in the drawstring body and is parallel to the bag body; or the isolation layer is partially or completely coated and covered on the inner side surface of the drawstring body; the outer side surface of the drawstring body is respectively bonded with the upper bag body sheet and the lower bag body sheet, and the isolation layer is used for preventing the inner side surface of the drawstring body from being bonded.

Preferably, in the inflatable product with the drawtape, the drawtape comprises a drawtape body and an isolation layer; the drawstring body is of a strip-shaped structure; the isolation layer is partially or completely coated on one side surface of the drawstring body, and the isolation layer is folded inside or arranged oppositely after the drawstring body is folded; after folding the both ends of stretching strap body respectively with the utricule upper strata with the utricule lower part bonds, the isolation layer is used for preventing the medial surface of stretching strap body bonds.

Preferably, in the inflatable product with the drawtape, the drawtape comprises a drawtape body and an isolation layer; the drawstring body is of a plane structure; the isolating layers are of strip structures, are coated at intervals or are integrally connected to the drawstring body, and the isolating layers which are adjacently arranged are respectively positioned on two side surfaces of the drawstring body; the two side surfaces of the drawstring body are respectively bonded with the upper bag body sheet and the lower bag body sheet, and the isolation layer is used for preventing the drawstring body from being bonded with the upper bag body sheet and the lower bag body sheet.

Preferably, in the inflatable product with the drawstring, the drawstring body is made of a material which is fused and bonded with the bag body; the isolation layer is any one of non-melting materials including PTFE braided fabric, cotton cloth and paper, or is high-temperature-resistant ink or coating printed or coated on the surface of the drawstring body, or is passivated surface obtained by a method including corona striking and surface passivation. That is, the barrier layer may be either a material of a different composition or structure that is visible to the naked eye, or a material that does not appear to the naked eye to be distinct but has been surface modified in microstructure by corona, surface passivation, erosion, penetration, or the like to obtain a structure and/or material change that is not visible to the naked eye.

The method of coating, printing or attaching an isolation layer on the surface of a pulling belt material of the existing PVC flocking air bed or TPU cloth composite inflatable cushion, printing high-temperature-resistant ink on the surface of the existing PE/PA co-extrusion film material, coating invisible silicone oil and the like is a mature technical scheme which can be selected.

A method of manufacturing an inflatable article having a drawstring, the drawstring and a bag body being simultaneously press bonded by a method including blanching or high frequency welding, the bonding face being bonded to the bag body at a predetermined high temperature after the bonding operation is completed, the drawstring pressed on the non-bonding face being separated from each other.

Preferably, in the above method for manufacturing an inflatable article with a draw tape, the non-adhesive face is obtained by printing or coating a non-adhesive layer, or by a method including corona discharge and surface passivation, or by a method including sandwiching a PTFE fabric, cotton cloth, paper.

Preferably, in the above method for manufacturing an inflatable product with a drawstring, the bladder body and the drawstring can be simultaneously unreeled and/or transported in the bonding process. When the bag body and the drawstring are synchronously unreeled and/or conveyed in the bonding process, the bag body and the drawstring are bonded in an all-around way; when the bag body and the drawstring are not unreeled and/or conveyed synchronously in the bonding process, the drawstring can intermittently appear according to rules in the production process; various "hand swing" or "wind pocket inflation" large opening inflatable structures and large opening sealing structures are obtained, including those shown in chinese patent application nos. 201711181733.X, 201810068160.8, 201810233922.5. The large opening part is of a structure without a drawstring, and the inflatable cushion body is of a structure with a drawstring.

Preferably, in the above method for manufacturing an inflatable product with a drawstring, the bladder body and the drawstring are made of polar polymer materials including PVC and TPU through a high-frequency ironing process; or the material is a nonpolar high polymer material including PE/PA co-extrusion film and is prepared by a hot ironing process.

The equipment for manufacturing the inflatable product with the drawstring comprises a pressing bearing platform, a pressing die and a planar isolation layer;

the pressing bearing platform is positioned below the lower capsule piece and is used for containing the lower capsule piece laid on the surface of the lower capsule piece;

the pressing die is positioned above the upper bag body sheet and corresponds to the drawstring and the positions to be bonded of the edges of the upper bag body sheet and the lower bag body sheet;

the isolating layer is positioned between the folded drawstring bodies to prevent the contact surfaces of the lower capsule piece pressed by the pressing platform and the upper capsule piece pressed by the pressing die in the drawstring bodies from being fused together;

after the pressing is finished, the planar isolation layer withdraws the drawstring body in a mode of relative movement with the drawstring body.

Holes of various shapes can also be arranged on the drawstring body in order to save material consumption, reduce the weight and the containing volume of the final product and/or increase the ventilation performance inside the air cushion. Including but not limited to puncturing. Also can adopt the gauze that cost, weight and storage volume are all minimum to make the utility model provides a stretching strap.

According to the technical scheme, compared with the prior art, the utility model discloses an inflatable product with a drawstring converts the production process of the inflatable product with the drawstring, which is originally manufactured by three-dimensional ironing in multiple steps, into a plane production process capable of ironing in one step; the pneumatic product can be produced in a mechanized, automatic, batch, continuous and uninterrupted flow line. The prepared inflatable product has the advantages of low comprehensive cost, high product consistency, stable and reliable quality, high production efficiency and the like, and has good application prospect and wide application range.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.

FIG. 1 is a schematic perspective view of a method and apparatus for manufacturing a tubular drawstring according to the present invention;

FIG. 2 is a schematic cross-sectional view of the method and apparatus for making the tubular draw tape of FIG. 1;

FIG. 3 is a schematic cross-sectional view of the inflated cushion after the tubular pull strip of FIGS. 1 and 2 is completed;

FIG. 4 is a schematic cross-sectional view of another method and apparatus for making a tubular drawstring in accordance with the present invention;

FIG. 5 is a schematic cross-sectional view of the inflated air cushion after the tubular drawstring of FIG. 4 has been formed;

FIG. 6 is a schematic cross-sectional view of another method and apparatus for manufacturing a tubular drawstring according to the present invention;

FIG. 7 is a schematic cross-sectional view of the inflated air cushion after the tubular pull strip of FIG. 6 is manufactured;

FIG. 8 is a schematic view of a method and apparatus for manufacturing a strip-shaped drawstring of the present invention;

FIG. 9 is a schematic view of the inflated air cushion after the elongated drawstring of FIG. 8 is manufactured;

FIG. 10 is a schematic view of the manufacturing method and apparatus for a wavy drawstring of the present invention;

FIG. 11 is a schematic view of the air mattress shown in FIG. 10 after the wavy pull strip has been formed and the air mattress has been inflated;

FIG. 12 is a schematic cross-sectional view of a flat drawstring with alternately printed high temperature resistant isolation layers according to the present invention;

FIG. 13 is a cross-sectional view of the cushion as shown in FIG. 12 with the flat pull strap in the inflated condition;

FIG. 14 is a schematic cross-sectional view of the air cushion after holes are punched in the drawstring of the present invention;

FIG. 15 is a schematic cross-sectional view of the air cushion of the flat pull belt made of gauze according to the present invention;

FIG. 16 is a cross-sectional view of the cushion of FIG. 15 shown inflated;

FIG. 17 is a schematic illustration of an adhesive sheet not treated in accordance with the teachings of the present invention;

FIG. 18 is a schematic view of an adhesive sheet coated with a release layer according to the present invention;

fig. 19 is a schematic view of the adhesive sheet after the release layer is coated and cut into strips.

Wherein:

1-capsule body upper piece; 2-lower capsule body; 3-pressing a bearing platform; 4-pressing the die; 5-a drawstring body; 6-an isolating layer; 7-holes; 8-gauze; 9-adhesive sheet.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Example 1

The currently known manufacturing method of the inflatable cushion drawstring comprises the following steps: firstly, the upper bag body sheet 1 and the drawstring body 5 are bonded together, then the lower bag body sheet 2 and the drawstring body 5 are bonded together, and materials such as surrounding edges and the like are sequentially hot-stamped. The process is realized by a plurality of steps and mainly adopts manual operation.

The inner surfaces of the upper and lower sheets of the bag body material and the surface of the drawstring material are both adhesive surfaces, if the bag body material is not formed by ironing and pressing step by step, the drawstring bodies 5 which are pressed together are adhered together, and the bag body material is not different from the drawstring bodies which are directly adhered together with the upper and lower surfaces, so that the effects of increasing the thickness, the attractiveness and/or the pressure bearing capacity of the bag body by the drawstring cannot be exerted.

In the utility model, only an isolation layer 6 is needed to be added in the tubular drawstring body 5 as shown in fig. 1 and 2; the isolation layer 6 separates the fused drawstring body 5 when being hot-pressed or high-frequency-pressed, so that the fusion drawstring body is not bonded together, and the bag body upper sheet 1, the bag body lower sheet 2 and the drawstring body 5 are bonded together by synchronous pressing because of no isolation layer. Moreover, the operation can be performed synchronously in the same plane; namely: the pressing die 4 presses the upper bag body sheet 1, the lower air cushion bag body sheet 2, the isolating layer 6 and the upper and lower sides of the cylindrical drawstring body 5 on the pressing bearing platform 3 for heating (including heat transfer heating or high-frequency oscillation heating) at one time. In case the heating finishes, remove pressing and scalding mould 4 and isolation layer 6 and with 1 upward movement of utricule upper part and/or 2 downstream of utricule lower part, the upper and lower both sides of the stretching strap body 5 of tube-shape can be separated, can become common circle stretching strap in the PVC flocking air bed.

The adhesive surface may be bonded to the inflatable cushion body by a method including hot stamping or high frequency welding, the non-adhesive surface may not be bonded when pressed together by a method including hot stamping or high frequency welding, and the surfaces of the drawstring body 5 pressed at the non-adhesive surface may be separated from each other by removing the press die 4 (shown as a cylindrical press die 4 in this embodiment) or by inflating. FIG. 3 is a schematic cross-sectional view of an inflatable cushion made by the method and apparatus after inflation.

Fig. 1 and 2 show the same process, but for ease of understanding, fig. 1 is shown in perspective view and fig. 2 is shown in cross-section.

FIG. 3 is a schematic cross-sectional view of an inflatable cushion made by the method and apparatus after inflation. For easy understanding, the bag upper sheet 1 (or the bag lower sheet 2) in fig. 3 has a larger gap between the ironing patterns of the drawstring body 5; the gaps between the hot-pressed lines in the actual product are not so large, but are attached together, and only not hot-pressed (the four sides are hot-pressed together, the middle is attached but not hot-pressed).

The isolation layer 6 in this embodiment may be a PTFE fabric or sheet that does not affect the permeability of the high frequency electromagnetic waves. The isolating layer 6 is fixed on the production line, and the upper bag body 1, the lower bag body 2 and the cylindrical drawstring body 5 move synchronously on the pressing bearing platform 3; therefore, after the pressing and ironing are finished, the isolating layer 6 can be separated from the cylindrical drawstring body 5 in a relative movement mode along with the upward movement of the upper bag body 1, the downward movement of the lower bag body 2 and the synchronous movement of the bonded cylindrical drawstring body 5.

Of course, if the manufacturing cost of the production line is not considered, the isolating layer 6 can be removed from the pressed cylindrical drawstring body 5 through a mechanical arm or other clamping devices.

The production steps can realize automatic and mechanized production with high efficiency and low cost.

Example 2

The above embodiment 1 is relatively troublesome in the process of adding or removing the separator 6, and may require an aligning, fixing or pulling device. To avoid this disadvantage, the release layer 6 may be attached directly to the drawtape body 5 by printing or coating, etc., as shown in fig. 4. Therefore, the insertion or the extraction of the isolation layer 6 can be avoided, and the upper side and the lower side of the air cushion capsule upper sheet 1, the capsule lower sheet 2, the isolation layer 6 and the cylindrical drawstring body 5 are pressed on the pressing bearing platform 3 for heating (including heat transfer heating or high-frequency oscillation heating) at one time by the pressing die 4. Once the heating finishes, remove the pressure and scald mould 4 and with 1 upward movement of utricule upper segment and/or 2 downward movements of utricule lower segment, the upper and lower both sides of sleeve form stretching strap body 5 can be separated, become common circle stretching strap in the PVC flocking air bed. The adhesive surface may be bonded to the inflatable cushion bladder by a method including heat staking or high frequency welding, the non-adhesive surfaces may not be bonded when pressed together by a method including heat staking or high frequency welding, and the surfaces of the drawstring material pressed against the non-adhesive surfaces may be separated from each other after the press mold is removed or the inflatable bag is inflated. FIG. 5 is a schematic cross-sectional view of an inflatable cushion made by the method and apparatus after inflation.

The isolation layer 6 in this embodiment may be high temperature resistant ink printed on the surface of the drawstring material (that is, ink which does not reach the melting point when the surface of the drawstring material is melted), or isolation liquid, isolation glue, isolation powder, isolation cloth or isolation paper coated or adhered on the surface of the drawstring. These barrier layers 6 can be enclosed within the inflatable cushion after the inflatable cushion has been manufactured without significant negative impact on the product quality and performance of the inflatable cushion.

The production steps in the embodiment are simpler and more controllable, and automatic and mechanical production with high efficiency and low cost is easier to realize.

Example 3

While fig. 4 and 5 show the draw tape body 5 with the barrier layer 6 partially printed or coated on the inside, for ease of production, the barrier layer 6 may be printed or coated entirely on the inside of the draw tape body 5 as shown in fig. 6. Especially, under the conditions that the printing and coating cost of the isolation layer 6 in the existing PE/PA co-extrusion film air column bag air valve production technology is very low and the technology is mature and reliable, the embodiment is easy to realize automatic flow line production.

FIG. 7 is a schematic cross-sectional view of an inflatable cushion made by the method and apparatus after inflation.

Example 4

The drawstring of the utility model is not only a tubular drawstring.

As shown in fig. 8, the pressing mold 4 in the above embodiment is replaced with a long strip, the tubular drawstring material is replaced with a strip-shaped drawstring body 5 partially coated with the isolation layer 6, and the isolation layer 6 is folded on the inner side of the strip-shaped drawstring body 5 by folding and pressing, so that the straight drawstring can be obtained.

FIG. 9 is a schematic cross-sectional view of a straight pull strap inflatable cushion made by the method and apparatus after being inflated.

Example 5

The drawstring of the utility model is not only a tubular drawstring or a strip drawstring.

As shown in fig. 10, the wavy drawstring can be obtained by folding and ironing the isolation layer 6 on the inner side of the strip-shaped drawstring body 5 by using a wavy ironing die 4 (or any other suitable shape). Figure 11 is a schematic cross-sectional view of the corrugated draw tape cushion made by the method and apparatus after inflation.

Therefore, the required drawstrings in various shapes can be obtained by only manufacturing the proper pressing die 4.

Example 6

As shown in fig. 12, high temperature resistant ink stripes may be printed alternately on the planar drawstring body 5 as the isolation layer 6. That is, such inks have a higher melting point than the upper bag sheet 1, the lower bag sheet 2 and the drawstring body 5. When the strip pressing die 4 with a certain temperature presses the three parts onto the pressing bearing platform 3 and keeps the three parts for a certain time, the pressed upper bag body sheet 1, the lower air cushion body material sheet 2 and the drawstring body 5 are melted, and the high-temperature ink clamped in the melted materials does not reach the melting point yet, and keeps solid state and is not welded with the materials; once the pressing mold 4 is removed, the pressed melting layer at the high-temperature ink part is easily separated by the high-temperature ink part after the pressed melting layer at the high-temperature ink part is solidified. The cross-section of the inflatable cushion made by this example is shown in FIG. 13.

The drawstrings in the embodiment are not distributed in a vertical state but have certain inclination, so that the tension on the joint seam is not vertical but has a certain angle, thereby being more beneficial to reducing the stress (tension) concentration at the joint line and being beneficial to improving the pressure resistance of the air cushion.

The high temperature resistant ink printed as the isolation layer 6 in this embodiment and the pressing mold 4 may be pre-set with a position gap. Because the width of the pressing die 4 is generally far smaller than that of the drawstring, there is enough space for printing high-temperature-resistant ink on the planar drawstring body 5.

Example 7

As shown in fig. 14, in order to save material consumption, reduce the weight and storage volume of the final product, and/or increase the ventilation performance inside the air cushion, holes 7 of various shapes can be provided on the planar drawtape body 5 without affecting the function of the drawtape adhesion or use. Including but not limited to perforating, grooving, embossing. The drawstring material at the position of the hole is separated from the planar drawstring body after the treatment, and is finally separated from the finished product of the inflatable cushion, so that the material consumption, the weight of the finished product and the storage volume can be reduced. Moreover, the air bag cavities on the two sides of the drawstring material with the holes 7 punched have more communicated channels, so that the air flow can be smoother, and the rapid inflation and deflation are more facilitated.

Example 8

In order to further reduce the cost, weight and storage volume, even the drawstring of the present invention can be made by the gauze 8 with extremely small cost, weight and storage volume as shown in fig. 15 or fig. 16. The principle is as follows: when the adhesive sheet 9 that can be adhered to the airbag body is ironed, the surface thereof becomes fluid after being in a molten state; these molten fluids can pass through the mesh of the mesh 8 to engage the inner surface of the bladder body, also in the molten state, and can be firmly fused together upon cooling. That is, the melted drawstring material and/or the airbag body material can bypass the gauze material body which is not melted at the ironing temperature through the meshes, and as long as the gauze with proper density is selected, after the melts are cooled to the room temperature, the gauze 8 can be reliably fixed on the inner surfaces of the upper bag body sheet 1 and the lower bag body sheet 2 of the air cushion bag body as shown in fig. 16, so that the drawstring becomes a light and thin drawstring; furthermore, the tensile strength of the mesh 8 woven from textile fibers is much better than that of drawstring film materials generally made by calendering, casting or blown film processes.

The adhesive sheet 9 in this embodiment may be cut into a strip shape, one side being an untreated adhesive side and the other side being a non-adhesive side coated with the separator 6. The adhesive sheet 9 together with the gauze 8 forms a drawstring material. The method for manufacturing the adhesive sheet may comprise: firstly, coating a separation layer 6 on an adhesive sheet material (the adhesive sheet material can be the same as or different from the airbag body material, and can be adopted as long as the adhesive sheet material and the airbag body material can be firmly adhered during hot pressing) shown in FIG. 17 by a proper mode including printing, coating and scraping, so as to obtain an adhesive sheet composite shown in FIG. 18; after the passage, the adhesive sheet composite was cut into narrow strips as shown in fig. 19. The adhesive sheets 9 in strip form and coated with the isolating layer 6 are placed between the air cushion bag upper sheet 1 and the bag lower sheet 2 at proper intervals and in up-and-down orientation (as shown in fig. 15), and the air cushion shown in fig. 16 is obtained after hot-pressing.

The inflatable cushion has lower cost, lighter weight, smaller storage volume and better tensile strength.

The steps of printing/coating the isolation layer and the step of ironing the air cushion can realize automatic and mechanized production with high efficiency and low cost.

The above isolating layer is obtained by plugging, printing or coating, that is, other different materials are attached to the outer surface of the drawstring body 5 during ironing. Of course, the above adhesive material may not be needed, but may be obtained directly by corona, surface modification and/or surface passivation, etc., so that additional printing, coating or plugging processes may be avoided.

The bag body and the drawstring are made of polar polymer materials including PVC and TPU through a high-frequency ironing process; or the material is a nonpolar high polymer material including PE/PA co-extrusion film and is prepared by a hot ironing process.

The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other. The device disclosed by the embodiment corresponds to the method disclosed by the embodiment, so that the description is simple, and the relevant points can be referred to the method part for description.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (5)

1. An inflatable product with a pull strap, comprising: a bag body and a drawstring;

the capsule body comprises a capsule body upper sheet (1) and a capsule body lower sheet (2) which are arranged up and down correspondingly;

the drawstring is positioned between the upper bag body sheet (1) and the lower bag body sheet (2), and the drawstring or an adhesive sheet (9) for fixing the drawstring is provided with an adhesive surface and a non-adhesive surface; the bonding surface is respectively bonded with the upper capsule body sheet (1) and the lower capsule body sheet (2), and the non-bonding surface is positioned between the two bonding surfaces bonded with the upper capsule body sheet (1) and the lower capsule body sheet (2).

2. A drawtape inflatable article as claimed in claim 1, wherein said drawtape comprises a drawtape body (5) and an insulation layer (6), said drawtape body (5) having an outer side which is an adhesive surface, said insulation layer (6) being a non-adhesive surface; the drawstring body (5) is of a cylindrical structure, and the isolation layer (6) is filled in the drawstring body (5) and is parallel to the bag body;

or the isolation layer (6) is partially or completely coated and covered on the inner side face of the drawstring body (5), the outer side face of the drawstring body (5) is respectively bonded with the upper bag body sheet (1) and the lower bag body sheet (2), and the isolation layer (6) is used for preventing the inner side face of the drawstring body (5) from being bonded.

3. A drawtape inflatable article as claimed in claim 1, wherein said drawtape comprises a drawtape body (5) and an insulation layer (6), said drawtape body (5) having an outer side which is an adhesive surface, said insulation layer (6) being a non-adhesive surface; the drawstring body (5) is of a strip-shaped structure; the isolation layer (6) is partially or completely coated on one side surface of the drawstring body (5), and the isolation layer (6) is folded inside or arranged oppositely after the drawstring body (5) is folded; after folding the lateral surface of stretching strap body (5) respectively with utricule upper segment (1) with utricule lower segment (2) bond, isolation layer (6) are used for preventing the medial surface of stretching strap body (5) bonds.

4. A drawtape inflatable article as claimed in claim 1, wherein said drawtape comprises a drawtape body (5) and an insulation layer (6), said drawtape body (5) having an outer side which is an adhesive surface, said insulation layer (6) being a non-adhesive surface; the drawstring body (5) is of a plane structure; the isolating layers (6) are of strip structures, are coated at intervals or are integrally connected to the drawstring body (5), and the isolating layers (6) which are adjacently arranged are respectively positioned on two opposite outer side surfaces of the drawstring body (5); the outer side face of the drawstring body (5) is respectively bonded with the upper bag body sheet (1) and the lower bag body sheet (2), and the isolation layer (6) is used for preventing the drawstring body (5) from being bonded with the inner side faces of the upper bag body sheet (1) and the lower bag body sheet (2).

5. A drawtape inflatable article as claimed in any one of claims 2 to 4, wherein said drawtape body (5) is of a material melt bonded to said bladder; the isolation layer (6) is any one of non-melting materials including PTFE braided fabric, cotton cloth and paper, or is high-temperature-resistant ink or coating printed or coated on the surface of the drawstring body, or is a passivated surface obtained by a method including corona striking and surface passivation.

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