CN217515960U

CN217515960U - High-stripping conveying belt

Info

Publication number: CN217515960U
Application number: CN202122640921.2U
Authority: CN
Inventors: 费海峰
Original assignee: Shanghai Yongli Conveying System Co ltd
Current assignee: Shanghai Yongli Conveying System Co ltd
Priority date: 2021-11-01
Filing date: 2021-11-01
Publication date: 2022-09-30
Anticipated expiration: 2031-11-01

Abstract

The utility model discloses a high conveyer belt that peels off, including framework layer, adhesive linkage and the top layer that connects gradually, the framework layer is the PET fabric, and the adhesive linkage is spandex and low temperature PET union fabric that interweaves, and framework layer and adhesive linkage melting bond, top layer and adhesive linkage melting bond. Compared with the conventional conveyer belt, the utility model, improved peel strength between the layer between the conveyer belt can resist abominable service behavior, has prolonged the life of conveyer belt, has reduced the belt and has changed maintenance duration and cost, uses the physics butt fusion method to improve peel strength between the layer, has reduced the manufacturing cost of conveyer belt has guaranteed the safety in utilization of conveyer belt.

Description

High-stripping conveying belt

Technical Field

The utility model belongs to the technical field of the conveyer belt, specifically be a high conveyer belt of peeling off.

Background

The conveying belt used in the baking food industry is generally a PU conveying belt, the PU conveying belt avoids the risk of plasticizers, and meanwhile, the PU conveying belt is superior to a PVC conveying belt in the aspects of breaking, peeling, roller passing and the like. However, in the baked food conveying industry, the working condition of the conveyor belt during working belongs to a high-temperature and heavy-oil environment, and the conventional PU conveyor belt is continuously used in the environment, so that the interlayer peeling strength of the belt is easily reduced. Tests prove that the normal peel strength of a PU conveyer belt glue layer and a cloth layer bonded by PU glue in the food industry at present is about 2.5N/mm, when the PU conveyer belt is used in a high-temperature heavy oil environment, the bonding strength of a PU layer and the cloth layer of the conveyer belt can be reduced by about 40-60 percent generally, and the delamination risk can be generated when the peel strength is reduced to 1.5N/mm.

SUMMERY OF THE UTILITY MODEL

The above-mentioned problem to prior art exists, the utility model aims at providing a high conveyer belt of peeling off compares with conventional conveyer belt, has improved peeling strength between the layer between the conveyer belt can resist abominable use operating mode, has prolonged the life of conveyer belt, has reduced belt change maintenance duration and cost, uses physics butt fusion method to improve peeling strength between the layer, has reduced the product cost of conveyer belt has guaranteed the safety in utilization of conveyer belt.

In order to realize the purpose, the utility model discloses the technical scheme who adopts is:

a high-stripping conveying belt comprises a framework layer, an adhesive layer and a surface layer which are sequentially connected, wherein the framework layer is made of PET fabric, the adhesive layer is made of spandex and low-temperature PET interwoven blended fabric, the framework layer and the adhesive layer are in melt adhesion, and the surface layer and the adhesive layer are in melt adhesion.

As a further improvement of the technical scheme:

the density of the adhesive layer fabric is 36X 32 pieces/2.54 cm, and the warp direction: 500D spandex filament, twisting: 100 turns/m, with the warp yarns S, Z twisted at intervals; weft direction: 0.25mm low temperature PET monofilament, weave: 1/1 plain weave.

And the low-temperature PET of the framework layer and the bonding layer is melted and bonded.

The low-temperature PET is PET with a melting point of 140-150 ℃.

The spandex of the surface layer and the bonding layer is melted and bonded.

The melting point of the spandex is 160-170 ℃.

The material of the surface layer includes but is not limited to PU, PVC, TPE.

The utility model has the advantages that: compared with the conventional conveying belt, the interlayer peeling strength between the conveying belts is improved, severe use working conditions can be resisted, the service life of the conveying belts is prolonged, the belt replacement and maintenance time and cost are reduced, the interlayer peeling strength is improved by using a physical welding method, the production cost of the conveying belts is reduced, and the use safety of the conveying belts is ensured.

Drawings

Fig. 1 is a schematic structural diagram of an embodiment of the present invention.

Detailed Description

The following detailed description of the embodiments of the present invention will be made with reference to the accompanying drawings. It is to be understood that the description of the embodiments herein is for purposes of illustration and explanation only and is not intended to limit the invention.

Spatially relative terms, such as "above … …," "above … …," "above … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

A high-stripping conveyer belt comprises a framework layer 1, an adhesive layer 2 and a surface layer 3 which are connected in sequence as shown in figure 1. The framework layer 1 and the adhesive layer 2 are fused and bonded, and the surface layer 3 and the adhesive layer 2 are fused and bonded.

The framework layer 1 is made of PET fabric, the used PET is conventional PET, and the melting point is 250-255 ℃.

The surface layer 3 is made of PU, PVC, TPE and the like. Preferably, PU is selected.

The bonding layer 2 is an interwoven blended fabric of spandex and low-temperature PET, and the low-temperature PET is PET with a melting point of 140-150 ℃. The melting point of the spandex is 160-170 ℃. The framework layer 1 and the adhesive layer 2 are fused and bonded by low-temperature PET. The spandex of the surface layer 3 and the bonding layer 2 is melted and bonded.

The density of the adhesive layer 2 fabric was 36 × 32/2.54 cm, and the warp direction: 500D spandex filament, twisting: 100 turns/m, with the warp yarns S, Z twisted at spaced intervals; weft direction: 0.25mm low temperature PET monofilament, weave: 1/1 has plain weave. Wherein 36 × 32 pieces/2.54 cm means that 36 pieces of warp and 32 pieces of weft in the range of length by width of 2.54cm × 2.54cm are respectively present.

The peeling strength of the conveyer belt based on the structure is not less than 6.5N/mm. The conventional PU belts and the high peel belts of this example were subjected to oil bath immersion at 100 ℃ and their peel strengths were measured before immersion and at 10 th, 20 th, 30 th, 40 th, 50 th and 60 th days after immersion, respectively, and the results obtained are shown in the following table (unit: N/mm).

	Before soaking	10 days	20 days	30 days	40 days	50 days	60 days
								Conventional PU conveyer belt	2.8	2.5	2	1.8	1.5	1.4	1.4
High-stripping conveying belt	6.9	6.8	6.2	5.4	5.5	5.4	5.2

As can be seen from the above table, the peel strength of the high peel belt of the present solution is approximately 2.5 times that of the conventional PU belt before soaking. After soaking in an oil bath at 100 ℃, the peel strength of the two materials decreases with increasing soaking time, but the peel strength decreases in different ranges for the same soaking time. For the conventional PU conveyor belt, the reduction of peel strength after 10 days, 20 days, 30 days, 40 days, 50 days, and 60 days of soaking was 10.7%, 28.6%, 35.7%, 46.4%, 50%, and 50%, respectively. For the high-peeling conveyer belt of the scheme, the reduction range of the peeling strength after soaking for 10 days, 20 days, 30 days, 40 days, 50 days and 60 days is respectively 1.4%, 10.1%, 21.7%, 20.3%, 21.7% and 24.6%. Obviously, the reduction range of the peeling strength of the high-peeling conveyer belt of the scheme under the severe working conditions (100 ℃ oil bath) is far smaller than that of the conventional PU conveyer belt.

Based on above-mentioned structure, the high conveyer belt of peeling off of this scheme has improved peel force between surface glue film and the cloth layer, even uses in adverse circumstances such as high temperature heavy oil, and interlaminar peel strength does not descend or peel strength after the decline still can satisfy the belt and use, can not produce the layering condition.

The manufacturing process of the conveying belt comprises the following steps:

step 1: and (5) drying and shaping the PET fabric.

In the step, the PET fabric is the framework layer 1, the cloth drying is shaped by infrared heating, the cloth drying speed is 12 m/min, and the temperature is 120 ℃.

And 2, step: the material of the surface layer 3 is cast on the adhesive layer 2 to obtain a cloth-adhesive structure.

In this embodiment, the surface layer 3 is made of PU, and the adhesive layer 2 is an interwoven blended fabric of spandex and low-temperature PET. In the step, the PU material is cast on the bonding layer 2 through a casting machine, and the casting speed is 3.5 m/min. The PU material used has a hardness of 92 degrees Shore A.

And 3, step 3: and (3) attaching and heating the cloth-glue structure obtained in the step (2) and the PET fabric obtained in the step (1).

In this step, after the lamination, the adhesive layer 2 is located between the PET fabric and the surface layer 3. The automobile is heated by infrared rays, the speed of the automobile is 4-5 m/min, and the heating temperature is 180-200 ℃.

Because the melting point of the low-temperature PET is 140-150 ℃, the melting point of the spandex is 160-170 ℃, and the heating temperature is 180-200 ℃, the low-temperature PET and the spandex are melted, the low-temperature PET is bonded with the PET fabric layer, and the spandex is bonded with the surface layer 3.

And 4, step 4: and (4) pressing matt patterns on the surface layer 3 of the structure obtained in the step (3) to obtain the high-stripping conveying belt.

In the step, the pattern pressing speed is 4.5-5.5 m/min.

Finally, it must be said here that: the above embodiments are only used for further detailed description of the technical solutions of the present invention, and the technical solutions of the present invention are not understood to be limited to the protection scope of the present invention, and some non-essential improvements and adjustments made by those skilled in the art according to the above-mentioned contents of the present invention all belong to the protection scope of the present invention.

Claims

1. The utility model provides a high conveyer belt that peels off which characterized in that, includes framework layer (1), adhesive linkage (2) and top layer (3) that connect gradually, and framework layer (1) is the PET fabric, and adhesive linkage (2) are spandex and low temperature PET interweave blending fabric, and the density of adhesive linkage (2) fabric is 36 x 32/2.54 cm, warp direction: 500D spandex filament, twisting: 100 turns/m, the warp yarn S, Z is twisted at intervals, the weft: 0.25mm low temperature PET monofilament, weave: 1/1 plain weave, the low temperature PET of the framework layer (1) and the adhesive layer (2) are melt bonded, and the spandex of the surface layer (3) and the adhesive layer (2) is melt bonded.