Composite production equipment for non-woven fabric

Abstract

The utility model discloses composite production equipment for non-woven fabric, which comprises a collecting roller with a suction area, a melt-blowing die head arranged on the periphery of the suction area, and a cambered surface pressing block which is arranged on the roller surface of the collecting roller in an abutting manner and is positioned at the downstream of the suction area, the melt-blowing die head is used for spraying melt-blowing fibers so as to form a melt-blowing surface layer on the collecting roller, and an extrusion channel allowing the melt-blowing surface layer to penetrate through is formed between the arc-shaped surface of the arc-surface pressing block and the local roller surface of the collecting roller.

Description

TECHNICAL FIELD

[0001] The utility model relates to non - woven production equipment technical field, specifically a kind of non - woven composite production equipment. BACKGROUND

[0002] In the production process of non-woven fabric, melt-blown technology as an important fiber forming method, because it can produce fiber layer with high filtration, high barrier and soft touch, and is widely used in medical and health, protective products and other fields. However, the melt-blown layer in the prior art often faces the problem of looseness, which seriously affects the overall performance and application effect of non-woven fabric.

[0003] The looseness problem of melt-blown layer mainly manifests as insufficient bonding force between fibers, which leads to easy shedding, deformation or rupture of fiber layer. This looseness not only reduces the strength and stability of non-woven fabric, but also affects its air permeability and moisture absorption. In the field of medical and health, loose melt-blown layer may lead to a decrease in the filtration performance of protective products, thereby increasing the risk of bacterial and viral penetration. In the packaging and building fields, loose melt-blown layer may lead to a decrease in the thermal insulation and waterproof performance of the material, affecting the service life and safety of the product.

[0004] The main reason for the looseness problem of melt-blown layer in the prior art is the lack of effective compaction: after the formation of the melt-blown fiber layer, there is a lack of effective compaction step to enhance the bonding force between the fibers. This leads to a large number of voids and loose structures inside the fiber layer, further exacerbating the looseness problem. SUMMARY

[0005] The utility model aims at overcoming the shortcomings of prior art, providing a kind of non - woven composite production equipment, improve production efficiency by unique structure design, optimize product performance.

[0006] In order to achieve the above-mentioned purpose, the utility model provides a kind of non - woven composite production equipment, including the collection roller with suction area, melt-blown die head arranged in the periphery of suction area and arc surface pressure block arranged close to the roller surface of collection roller and located downstream of suction area, wherein the melt-blown die head is used to spray melt-blown fiber to form melt-blown surface layer on the collection roller, and the arc surface of the arc surface pressure block and the local roller surface of the collection roller form an extrusion channel for the melt-blown surface layer to pass through.

[0007] Further, it further includes a web former and a spun-bond die head arranged above the web former, wherein the web former is arranged adjacent to the outlet position of the extrusion channel and is used to receive the compressed melt-blown surface layer, and the spun-bond die head is used to spray spun-bond fiber to form a spun-bond surface layer above the melt-blown surface layer.

[0008] Further, a hot calendering roller set is arranged downstream of the web former, wherein the coinciding meltblown and spunbond layers are fed into the gap between the rollers of the hot calendering roller set for hot calendering.

[0009] Further, the collecting roller is formed with a plurality of axially arranged groups of annular wave-shaped texture protrusions.

[0010] The above-mentioned scheme has the following beneficial effects: 1) efficient production: through the integration of meltblowing, spunbonding and hot calendering processes, the continuous and efficient production of non-woven fabric is realized; 2) optimization of product performance: the combination of meltblown fibers and spunbond fibers makes the non-woven fabric have excellent strength, air permeability and softness. At the same time, the arrangement of the texture protrusions further improves the uniformity and stability of the fiber layer. BRIEF DESCRIPTION OF DRAWINGS

[0011] Fig. 1 Fig. 1 is a schematic view of a composite production device.

[0012] Fig. 2 Fig. 2 is a schematic view of the composite of non-woven fabric.

[0013] In the figure, 1 is a collecting roller, 11 is a suction area, 13 is a texture protrusion, 2 is an arc-shaped pressure block, 21 is an extrusion channel, 3 is a meltblowing die head, 4 is a web former, 5 is a spunbonding die head, 6 is a hot calendering roller set, 10 is a meltblown layer, and 20 is a spunbond layer. DETAILED DESCRIPTION

[0014] In order to facilitate the understanding of the present application, the present application will be described more fully below with reference to the accompanying drawings. The preferred embodiments of the present application are shown in the drawings. However, the present application can be realized in many different forms and is not limited to the embodiments described herein. The purpose of providing these embodiments is to make the disclosure of the present application more thorough and comprehensive.

[0015] Referring to the drawings Figs. 1-2As shown, in the present embodiment, a composite production device for nonwoven fabric comprises a collection roller 1 with a suction area 11, a meltblown die head 3 arranged at the periphery of the suction area 11, and an arc-shaped pressure block 2 arranged closely to the surface of the collection roller 1 downstream of the suction area 11. The meltblown die head 3 is used to spray meltblown fibers to form a meltblown surface layer 10 on the collection roller 1. Specifically, the surface of the collection roller 1 in the present embodiment is designed with a specific suction area 11 connected by a negative pressure system, which can efficiently adsorb the meltblown fibers sprayed by the meltblown die head 3 on the surface of the roller. Precise control of the negative pressure system ensures uniform distribution of the fibers, avoiding the accumulation or sparseness of the fibers. Secondly, the surface of the collection roller 1 is also shaped with a plurality of sets of axially arranged ring-shaped wavy texture protrusions 13. These texture protrusions 13 not only increase the contact area between the fibers and the surface of the roller, but also increase the friction between the fibers and the roller, effectively preventing the fibers from sliding on the roller, thereby further improving the uniformity and stability of the fiber layer.

[0016] In the present embodiment, the meltblown die head 3 is located at the periphery of the suction area 11 of the collection roller 1. By spraying meltblown fibers at high speed and uniformly onto the collection roller 1, and under the action of negative pressure of the suction area 11, a uniform and dense meltblown surface layer 10 is formed on the collection roller 1.

[0017] In the present embodiment, the arc-shaped pressure block 2 is arranged closely to the surface of the collection roller 1 downstream of the suction area 11, and a narrow extrusion channel 21 is formed between the arc surface of the arc-shaped pressure block 2 and the partial surface of the collection roller 1. When the meltblown surface layer 10 passes through this channel, the arc-shaped pressure block 2 exerts a certain pressure on it, further improving the density and uniformity of the fiber layer. Secondly, the design of the extrusion channel 21 also helps to shape the fibers, so that the meltblown surface layer 10 can maintain a stable form in the subsequent process.

[0018] In the embodiment, a web former 4 and a spunbond die 5 located above the web former 4 are further included. The web former 4 is located below the outlet of the extrusion channel 21 and is used to receive the melt-blown surface layer 10 after extrusion. The design of the web former 4 ensures that the melt-blown surface layer 10 can be smoothly and continuously transferred to the next process, avoiding the breakage or shedding of fibers. The web former 4 also has a fiber conveying function, which can convey the melt-blown surface layer 10 at a constant speed to the position below the spunbond die 5, providing a stable base for the spraying of spunbond fibers. In addition, the spunbond die 5 is located above the web former 4, and the spunbond die 5 is used to spray spunbond fibers to form a spunbond surface layer 20 above the melt-blown surface layer 10, i.e., the spunbond die 5 sprays the spunbond fibers at a high speed and uniformly above the melt-blown surface layer 10. The addition of spunbond fibers not only enhances the strength and stability of the non-woven fabric, but also gives the product better hand feeling and air permeability. The spunbond fibers interweave with the melt-blown fibers during the spraying process, forming a dense spunbond surface layer 20. This spunbond surface layer 20 is tightly combined with the melt-blown surface layer 10, together forming a high-quality non-woven fabric.

[0019] In the embodiment, a hot calender roller set 6 located downstream of the web former 4 is further included. The overlapping melt-blown surface layer 10 and spunbond surface layer 20 are introduced into the gap between the rollers of the hot calender roller set 6 for hot calendering, so as to hot calender the overlapping melt-blown surface layer 10 and spunbond surface layer 20. Through the action of heating and extrusion, the two layers of fibers are tightly combined together, forming a non-woven fabric with excellent performance.

[0020] In summary, the non-woven fabric composite production equipment of the present application integrates the melt-blown, spunbond and hot calendering processes, realizing the continuous and efficient production of non-woven fabric. This not only improves the production efficiency, but also reduces the production cost. In addition, through the combination of melt-blown and spunbond fiber forming technologies and the application of hot calendering process, the non-woven fabric produced by the equipment of the present application has excellent strength, air permeability, softness and moisture absorption. The improvement of these performances makes the non-woven fabric more widely used in medical and health, construction, packaging, agriculture and other fields.

[0021] The above-described embodiments are only preferred embodiments of the present application, and do not limit the present application in any form. Any skilled person in the art, without departing from the technical solution of the present application, can make more possible changes, modifications and decorations to the technical solution of the present application by using the above-mentioned disclosed technical content, or modify them. Therefore, any equivalent equivalent changes made according to the idea of the present application, which do not deviate from the content of the technical solution of the present application, should be covered within the protection scope of the present application.

Claims

1. A composite production equipment for nonwoven fabrics, characterized in that: It includes a collecting roller (1) with a suction area (11), a meltblown die (3) located around the suction area (11), and an arc-shaped pressure block (2) arranged close to the roller surface of the collecting roller (1) and located downstream of the suction area (11), wherein the meltblown die (3) is used to spray meltblown fibers to form a meltblown surface layer (10) on the collecting roller (1), and an extrusion channel (21) is formed between the arc-shaped surface of the arc-shaped pressure block (2) and a partial roller surface of the collecting roller (1) for the meltblown surface layer (10) to pass through.

2. The composite production equipment for nonwoven fabrics according to claim 1, characterized in that: It also includes a web forming machine (4) and a spunbond die (5) located above the web forming machine (4), wherein the web forming machine (4) is located near the outlet of the extrusion channel (21) and is used to receive the pressurized meltblown surface layer (10), and the spunbond die (5) is used to eject spunbond fibers to form a spunbond surface layer (20) above the meltblown surface layer (10).

3. The composite production equipment for nonwoven fabrics according to claim 2, characterized in that: It also includes a hot rolling composite roller group (6) located downstream of the web forming machine (4), wherein the overlapping meltblown surface layer (10) and spunbond surface layer (20) merge into the gap between the roller surfaces of the hot rolling composite roller group (6) for hot rolling composite.

4. The composite production equipment for nonwoven fabrics according to claim 1, characterized in that: The collecting roller (1) has several sets of axially arranged textured protrusions (13) arranged in a ring-shaped wave pattern on its roller surface.

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