Elastomer manufacturing system

Abstract

The utility model discloses a manufacturing system of an elastic body, the elastic body comprises an upper layer of sheet, a lower layer of sheet and a group of elastic yarns located between the two layers of sheets, the elastic yarns are arranged at intervals, and the distance between the adjacent elastic yarns is 1.2-2.8 mm; when the elastic body is in a non-stretching state, the section size of the elastic yarn is 0.05-0.6 mm; the manufacturing system comprises a warping unit and a composite unit, wherein the warping unit comprises an unwinding assembly for unwinding a group of elastic yarns and a drawing roller assembly for drawing and warping the unwinding group of elastic yarns; and the group of elastic yarns are respectively compounded with the upper and lower sheets through a compounding unit to finally form the elastic body. A large number of elastic yarns with dense intervals are drawn and warped through the warping unit, the elastic yarns are glued after being warped, and then the elastic yarns are compounded with the upper sheet and the lower sheet respectively, so that the process is simple, the elastic yarns after being warped are uniform and stable in tension, and the compounding effect is relatively good.

Description

Technical Field

[0001] The utility model relates to the technical field of composite elastic material manufacturing, in particular to a manufacturing system of an elastomer. Background Art

[0002] During people's daily travel and business trips, it is inconvenient to change clothes, and disposable clothing has good practicality and convenience. At present, in order to ensure elasticity in clothing and sanitary products, elastomeric composite materials are used in many parts of the products. For example, Chinese patent application No. 2024208090522 provides a kind of disposable shorts, which provides a substrate layer, which includes a first sheet on the outside, a second sheet on the inside, and a plurality of laterally extending elastic threads between the first sheet and the second sheet. The elastic threads are arranged at intervals in the longitudinal direction, and the spacing between adjacent elastic threads is 1.2 to 2.8 mm. When the substrate layer is in a non-stretched state, the cross-sectional size of the elastic threads is 0.05 to 0.6 mm. Due to the large number of elastic threads and narrow spacing in the substrate layer, traditional manufacturing processes are difficult to apply, and the tension of the elastic threads in the traditional process is unstable when applying glue, which seriously affects the composite effect.

[0003] For example, Chinese patent CN116968326A discloses an elastic material composite equipment and a composite process thereof, wherein the equipment includes a surface non-woven fabric unwinding and feeding device for unwinding and feeding the surface non-woven fabric, a bottom non-woven fabric unwinding and feeding device for unwinding and feeding the bottom non-woven fabric, and a glue gun assembly for spraying hot melt adhesive on the surface non-woven fabric, and also includes an elastic band unwinding device, an elastic band traction and pressure guide wheel assembly, an elastic band glue rolling device and a first composite traction and pressure guide wheel assembly sequentially arranged along the conveying direction of the elastic band; although the above patent provides an elastic material composite equipment, the process is difficult for products with a large number of elastic threads and narrow spacing, and it is difficult to ensure the product composite effect. Utility Model Content

[0004] In view of the shortcomings of the prior art, the utility model provides an elastomer manufacturing system, which is suitable for manufacturing elastomers with a large number of elastic threads and narrow spacing, and has stable and reliable composite.

[0005] In order to solve the above technical problems, the technical solution adopted by the utility model is:

[0006] The manufacturing system of the elastic body comprises an upper and a lower layer of sheets and a group of elastic threads between the two layers of sheets, wherein the elastic threads are arranged at intervals, and the interval between adjacent elastic threads is 1.2 to 2.8 mm; the manufacturing system comprises:

[0007] a warping unit, comprising an unwinding assembly for unwinding a group of elastic yarns and a drafting assembly for drafting and warping the unwinding group of elastic yarns;

[0008] The compounding unit compounds the group of elastic threads with the upper and lower sheets respectively to finally form an elastic body.

[0009] Further:

[0010] When the elastic body is in a non-stretched state, the cross-sectional size of the elastic wire is 0.05-0.6 mm.

[0011] The drafting assembly is a group of pre-drafting roller structures arranged side by side.

[0012] The group of pre-drafting roller structures includes four pre-drafting rollers, the first two pre-drafting rollers are staggered up and down to form a front roller unit, the second two pre-drafting rollers are staggered up and down to form a rear roller unit, and the front roller unit and the rear roller unit are arranged side by side.

[0013] The unwinding assembly is a frame structure or an elastic disc unwinding structure integrated with a group of elastic unwinding rollers.

[0014] The composite unit comprises a glue-applying structure for applying glue to the elastic thread, which is arranged in sequence along the running direction, a first composite roller for combining the glue-applied elastic thread with a layer of sheet material, and a second composite roller for combining another layer of sheet material with the elastic thread.

[0015] The system can choose to manufacture the elastomer online or offline according to actual needs. When manufacturing offline, a winding unit for winding the elastomer is provided behind the composite unit, and the winding unit includes an insulation box and a winding assembly located behind the insulation box.

[0016] A de-elasticating unit for cutting off part of the elastic threads in the elastic body is also provided behind the composite unit.

[0017] The de-bullet unit is an ultrasonic de-bullet component or a pre-cutting knife de-bullet component.

[0018] Compared with the prior art, the utility model has the following advantages:

[0019] The manufacturing system of the elastomer is reasonably designed. A large number of elastic threads are stretched and warped by a warping unit, which is suitable for the production of elastomers with a large number of elastic threads. The process is relatively simple. Moreover, the tension of the elastic threads after warping is uniform and stable, and the composite effect is relatively good. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The following is a brief description of the contents and symbols in the drawings of this specification:

[0021] Figure 1 This is a schematic diagram of the online system of the utility model Figure 1 .

[0022] Figure 2 This is a schematic diagram of the online system of the utility model Figure 2 .

[0023] Figure 3 This is a schematic diagram of the belt rewinding system of the utility model Figure 1 .

[0024] Figure 4 This is a schematic diagram of the belt rewinding system of the utility model Figure 2 .

[0025] In the figure:

[0026] A. Warping unit, B. Compounding unit, C. De-elasticizing unit, D. Winding unit;

[0027] 1. Rubber band unwinding rack, 2. Pre-stretching roller I, 3. Pre-stretching roller II, 4. Pre-stretching roller III, 5. Pre-stretching roller IV, 6. Sheet outer layer unwinding assembly, 7. Sheet inner layer unwinding assembly, 8. Rubber band gluing wheel, 9. Ultrasonic de-elastication assembly, 10. Insulation box, 11. Rewinding assembly. DETAILED DESCRIPTION

[0028] The specific implementation of the utility model will be further explained in detail below through the description of embodiments with reference to the accompanying drawings.

[0029] like Figures 1 to 4 As shown, the manufacturing system of the elastomer is suitable for the field of clothing and sanitary products manufacturing. The elastomer includes two layers of upper and lower sheets and a group of multiple elastic threads extending laterally between the two layers of sheets. The elastic threads are arranged at intervals along the longitudinal direction, and the spacing between adjacent elastic threads is 1.2 to 2.8 mm. When the elastomer is in a non-stretched state, the cross-sectional size of the elastic threads is 0.05 to 0.6 mm.

[0030] Its manufacturing system includes a warping unit A and a compounding unit B; a large number of elastic threads are stretched and warped by the warping unit, which is suitable for online elastomer production with a large number of elastic threads, and the process is relatively simple; and the tension of the elastic threads after warping is uniform and stable, and the compounding effect is relatively good.

[0031] The warping unit includes an unwinding assembly for unwinding a group of elastic threads and a drawing assembly for drawing and warping the unwinding group of elastic threads; preferably, the drawing assembly is a group of pre-drawing roller structures arranged side by side, and the drawing and warping process for a large number of elastic threads is relatively simple.

[0032] The group of elastic threads are respectively compounded with the upper and lower sheets by the compounding unit to finally form an elastic body. Preferably, the compounding unit includes a rubber coating wheel 8, an elastic band, a layer of sheet compounding rollers, and a two-layer sheet compounding roller arranged in sequence according to the running direction; it also includes a sheet outer layer unwinding component 6 and a sheet inner layer unwinding component 7, which are integrated and compact in structure.

[0033] The elastic thread is first compounded with a layer of sheet material by hot melt adhesive, preferably the adhesive is applied intermittently on the elastic thread. After the compounding with one layer of sheet material is completed, it is compounded with another layer of sheet material to form an elastomer. This patent provides a manufacturing process for a special elastomer suitable for the elastomer in a non-stretched state, the cross-sectional size of the elastic thread is 0.05 to 0.6 mm, and the distance between adjacent elastic threads is 1.2 to 2.8 mm. The process has the advantages of stable tension control and low cost.

[0034] There is also an anti-elasticity unit C behind the composite unit for cutting off part of the elastic threads in the elastic body; the anti-elasticity unit C is generally suitable for online manufacturing for the purpose of composite absorbent bodies or for the manufacture of special shorts products (partial anti-elasticity), and the winding unit D may not be set at this time.

[0035] The unwinding assembly is a frame structure or an elastic band reel unwinding structure integrated with a group of elastic band unwinding rollers, and the frame structure is an elastic band unwinding frame 1. There are many ways to unwind the elastic wire, such as Figures 1 to 3 The creel shown in the figure may be a rubber band unwinding mechanism known in the industry, or may be a rubber band unwinding mechanism as shown in the figure. Figure 4 The rubber band reel unwinding structure shown in the figure. If the rubber band reel unwinding is adopted, the "creel stand and pre-drafting roller structure" can be omitted. If the creel stand or rubber band unwinding mechanism is adopted, the pre-drafting roller structure can be configured on the downstream side.

[0036] Preferably, the above-mentioned group of pre-stretching roller structures includes four pre-stretching rollers, the pre-stretching roller Ⅰ2 and the pre-stretching roller Ⅱ3 located at the front are staggered up and down to form a front roller unit, the pre-stretching roller Ⅲ4 and the pre-stretching roller Ⅳ5 located at the rear are staggered up and down to form a rear roller unit, and the front roller unit and the rear roller unit are arranged side by side; the elastic wire passes around the pre-stretching roller Ⅰ, the pre-stretching roller Ⅱ, the pre-stretching roller Ⅲ, and the pre-stretching roller Ⅳ in turn to form a wrap angle, the tension of the elastic wire is uniform and stable, and the composite effect is relatively good.

[0037] The preferred specific embodiments of the present utility model are:

[0038] like Figure 1 In the embodiment shown, the system only includes a warping unit and a compounding unit; Figure 2 In the embodiment shown, a de-elasticating unit C for cutting off part of the elastic filaments in the elastomer is provided behind the composite unit. Preferably, the de-elasticating unit C is an ultrasonic de-elasticating component 9 or a pre-cutting knife de-elasticating component.

[0039] like Figure 1 and Figure 2 The system does not need to set up a winding process. The composite elastomer is directly transported online for the manufacture of disposable shorts. It has good fit and flatness, maintains a relatively flat surface under pressure, and is not prone to wrinkles.

[0040] In addition, the application area of ​​the elastic thread between the upper and lower sheets is relatively flexible, and it can be applied only in the upper and lower waist areas, but not in the middle crotch position. Therefore, in this embodiment, the above-mentioned "spacing between adjacent elastic threads" refers to the spacing between adjacent elastic threads at the waist; the aforementioned "elastic-eliminating unit" can select the cutting area as needed, for example, the elastic thread can be partially cut off at the front and rear waist parts, or it can be cut through the front and rear waist parts; partial cutting means that only the part at the waist position is cut off, without penetrating.

[0041] like Figure 3 and Figure 4 In the embodiment shown, the system includes a warping unit A, a compounding unit B and a winding unit D; that is, a winding unit D for winding the elastomer is provided behind the compounding unit, and the winding unit D includes a heat preservation box 10 and a winding assembly 11 located behind the heat preservation box.

[0042] If a winding unit is added after the compounding unit, it is suitable for offline manufacturing of the above elastomers. If it is online manufacturing, there is no insulation box and winding components.

[0043] The above is only an explanation of the preferred embodiments of the present invention. The above technical features can be arbitrarily combined to form multiple embodiments of the present invention.

[0044] The utility model is described above by way of example in conjunction with the accompanying drawings. It is obvious that the specific implementation of the utility model is not limited to the above-mentioned method. As long as various non-substantial improvements are made using the concept and technical solution of the utility model, or the concept and technical solution of the utility model are directly applied to other occasions without improvement, they are all within the protection scope of the utility model.

Claims

1. A system for manufacturing an elastic body, the elastic body comprising two layers of sheets, an upper layer and a lower layer, and a group of elastic threads between the two layers of sheets, the elastic threads are arranged at intervals, and the interval between adjacent elastic threads is 1.2 to 2.8 mm, characterized in that: The manufacturing system comprises: a warping unit, comprising an unwinding assembly for unwinding a group of elastic yarns and a drafting assembly for drafting and warping the unwinding group of elastic yarns; The compounding unit compounds the group of elastic threads with the upper and lower sheets respectively to finally form an elastic body.

2. The system for manufacturing an elastic body according to claim 1, characterized in that: When the elastic body is in a non-stretched state, the cross-sectional size of the elastic wire is 0.05-0.6 mm.

3. The system for manufacturing an elastic body according to claim 1, characterized in that: The drafting assembly is a group of pre-drafting roller structures arranged side by side.

4. The system for manufacturing an elastic body according to claim 1, characterized in that: The unwinding assembly is a frame structure or an elastic disc unwinding structure integrated with a group of elastic unwinding rollers.

5. The system for manufacturing an elastic body according to claim 1, characterized in that: The composite unit comprises a glue-applying structure for applying glue to the elastic thread, which is arranged in sequence along the running direction, a first composite roller for combining the glue-applied elastic thread with a layer of sheet material, and a second composite roller for combining another layer of sheet material with the elastic thread.

6. The system for manufacturing an elastic body according to claim 1, characterized in that: A de-elasticating unit for cutting off part of the elastic threads in the elastic body is also provided behind the composite unit.

7. The system for manufacturing an elastic body according to claim 1, characterized in that: A winding unit for winding the elastomer is arranged at the rear of the composite unit, and the winding unit comprises a heat preservation box and a winding assembly located at the rear of the heat preservation box.

8. The system for manufacturing an elastic body according to claim 3, characterized in that: The group of pre-drafting roller structures includes four pre-drafting rollers, the first two pre-drafting rollers are staggered up and down to form a front roller unit, the second two pre-drafting rollers are staggered up and down to form a rear roller unit, and the front roller unit and the rear roller unit are arranged side by side.

9. The system for manufacturing an elastic body according to claim 6, characterized in that: The de-bullet unit is an ultrasonic de-bullet component or a pre-cutting knife de-bullet component.

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