CN204174475U

CN204174475U - Shoe press felt

Info

Publication number: CN204174475U
Application number: CN201420624678.2U
Authority: CN
Inventors: 李荣刚; 赵传山; 谭学强; 于法民; 许建民
Original assignee: Liaocheng Jingwei Industrial Fabrics & Felts Co Ltd
Current assignee: Liaocheng Jingwei Industrial Fabrics & Felts Co Ltd
Priority date: 2014-10-27
Filing date: 2014-10-27
Publication date: 2015-02-25
Anticipated expiration: 2024-10-27

Abstract

The utility model relates to a kind of shoe press felt.This shoe press felt, comprises the surface fibre layer, core fibers layer, spacer screen layer and the backing layer fibrage that superpose connection in turn; Spacer screen layer at least comprises upper strata spacer screen, middle level spacer screen and lower floor's spacer screen Tipple Bottom net, and Tipple Bottom net is by warp and parallel composition, and warp is arranged perpendicular to parallel; The warp of upper strata spacer screen is nylon monofilament, and parallel is the twines of many superfine nylon monofilaments through plying composition; The warp of middle level spacer screen is the twines of many superfine nylon monofilaments through plying composition, and parallel is nylon monofilament; The warp of lower floor's spacer screen is nylon monofilament, and parallel is the twines of many superfine nylon monofilaments through plying composition.The utility model can not cause inlaying between spacer screen layer, has water space capacity large, good permeability and the characteristic such as elastic recovery is good; During shoe press extra high for linear pressure, resistance to compaction capacity is strong, and drainability is good, the linear pressure that ability is high, long service life.

Description

Shoe press felt

Technical field

The utility model relates to a kind of press fabric for paper machine press dewatering, particularly a kind of shoe press felt.

Background technology

Shoe press is a kind of Novel compressing mode that Modern High-Speed paper machine press section adopts, its nip width is large, linear pressure high (can reach more than 1000KN/m), and page is long at nip pressing times, go out press section web dryness high, thus the steam consumption of paper machine speed or reduction drying section can be improved.The shoe press felt used to press section is had higher requirement, and requires that woollen blanket has good elasticity and water space capacity, especially require that woollen blanket has the performance of higher resistance to high linear pressure, otherwise woollen blanket will lose drainage capacity at short notice.

Felt is a kind of drainage facilities for paper machine press section, is a kind of fabrics for industrial use, and Main Function is dehydration, support wet page, modification page, transmission page etc., and wherein dehydration is Main Function.In current production, most popular felt is spacer screen needled flocking felt (also referred to as BOM felt).BOM felt is made up of spacer screen layer and fibrage two large divisions, and its spacer screen layer adopts different weaving technology to be made by warp and parallel.

Spacer screen layer is the skeleton forming BOM felt, and it directly determines the stability of woollen blanket, drainability, resistance to pressure, elastic recovery and ultimate strength performance etc.Material many employings polyamide (polyamide fibre) of warp and parallel or polyester (terylene), use specification to mainly contain the twine of monofilament through plying composition and the monofilament of 0.2 mm ~ 0.5 mm of φ 0.15mm ~ 0.25mm.On same layer spacer screen, warp adopts the yarn of identical material same size, and parallel adopts the yarn of identical material same size equally.This spacer screen, has certain compressive property and stable result of use, is generally used in present stage.

But because this spacer screen is when manufacturing lamellar structure's structure, two and above spacer screen stacked together, warp and the parallel of upper and lower two-layer spacer screen are completely corresponding, when press section of a paper machine adopts shoe press, under very high linear pressure repeated action, easily cause inlaying between spacer screen layer, the warp of upper strata spacer screen is made to embed in the gap of lower floor's spacer screen warp, woollen blanket elastic recovery properties is declined, and dehydration resistance increases, thus reduces water filtering performance and the service life of woollen blanket.

Summary of the invention

The technical problems to be solved in the utility model is the above-mentioned defect how overcoming prior art, provides a kind of shoe press felt.

The utility model is achieved through the following technical solutions:

This shoe press felt, comprises the surface fibre layer, core fibers layer, spacer screen layer and the backing layer fibrage that superpose connection in turn;

Described spacer screen layer at least comprises upper strata spacer screen, middle level spacer screen and lower floor's spacer screen Tipple Bottom net, and described Tipple Bottom net is by warp and parallel composition, and warp is arranged perpendicular to parallel;

The warp of described upper strata spacer screen is nylon monofilament, and parallel is the twines of many superfine nylon monofilaments through plying composition;

The warp of described middle level spacer screen is the twines of many superfine nylon monofilaments through plying composition, and parallel is nylon monofilament;

The warp of described lower floor spacer screen is nylon monofilament, and parallel is the twines of many superfine nylon monofilaments through plying composition.

As optimization, the warp of described upper strata spacer screen is φ 0.2 ~ 0.5mm nylon monofilament, and parallel is φ 0.1 ~ 0.25mm × 19 nylon monofilament twines; The warp of described middle level spacer screen is φ 0.1 ~ 0.25mm × 19 nylon monofilament twines, and parallel is φ 0.2 ~ 0.5mm nylon monofilament; The warp of described lower floor spacer screen is φ 0.2 ~ 0.5mm nylon monofilament, and parallel is φ 0.1 ~ 0.25mm × 19 nylon monofilament twines.

As optimization, the warp of described upper strata spacer screen is φ 0.25mm nylon monofilament, and parallel is φ 0.1mm × 19 nylon monofilament twines; The warp of described middle level spacer screen is φ 0.1mm × 19 nylon monofilament twines, and parallel is φ 0.25mm nylon monofilament; The warp of described lower floor spacer screen is φ 0.25mm nylon monofilament, and parallel is φ 0.1mm × 19 nylon monofilament twines.

As optimization, described upper strata spacer screen, middle level spacer screen and lower floor's spacer screen are endless and weave.

As optimization, described surface fibre layer, core fibers layer and the fibrolaminar material of backing layer are polyamide fibre short fiber.

As optimization, the fibre fineness of described surface fibre layer is 3.3 ~ 22dtex, and core fibers layer and the fibrolaminar fibre fineness of backing layer are 22 ~ 44dtex.

The beneficial effect of the utility model shoe press felt is:

This shoe press can not cause inlaying between spacer screen layer with felt, has water space capacity large, good permeability and the characteristic such as elastic recovery is good; During shoe press extra high for linear pressure, resistance to compaction capacity is strong, and drainability is good, the linear pressure that ability is high, long service life; There is good actual application value and promotional value.

Accompanying drawing explanation

Below in conjunction with accompanying drawing, this shoe press felt is described further:

Fig. 1 is structural representation of the present utility model;

Fig. 2 is the plan structure schematic diagram of upper strata spacer screen and lower floor's spacer screen;

Fig. 3 is the A-A sectional structure schematic diagram of Fig. 2;

Fig. 4 is the plan structure schematic diagram of middle level spacer screen;

Fig. 5 is the B-B sectional structure schematic diagram of Fig. 4;

In figure: 1, surface fibre layer, 2, core fibers layer, 3, upper strata spacer screen, 4, middle level spacer screen, 5, lower floor's spacer screen, 6, backing layer fibrage, 7, warp, 8, parallel.

Detailed description of the invention

For making the purpose of this utility model, technical scheme and advantage clearly understand, to develop simultaneously embodiment referring to accompanying drawing, the utility model is further described.

As shown in Figures 1 to 5, this shoe press felt, comprises the surface fibre layer 1, core fibers layer 2, spacer screen layer and the backing layer fibrage 6 that superpose connection in turn; Described spacer screen layer comprises upper strata spacer screen 3, middle level spacer screen 4 and lower floor's spacer screen 5 Tipple Bottom net, is 1+1+1 lamellar structure structure, and effectively improve the water space capacity of woollen blanket, described Tipple Bottom net forms by warp 7 and parallel 8, and warp 7 is arranged perpendicular to parallel 8.

The warp 7 of described upper strata spacer screen 3 is φ 0.25mm nylon monofilament, and parallel 8 is φ 0.1mm × 19 nylon monofilament twines; The warp 7 of described middle level spacer screen 4 is φ 0.1mm × 19 nylon monofilament twines, and parallel 8 is φ 0.25mm nylon monofilament; The warp 7 of described lower floor spacer screen 5 is φ 0.25mm nylon monofilament, and parallel 8 is φ 0.1mm × 19 nylon monofilament twines.

First, by the design to woollen blanket spacer screen layer, make Tipple Bottom net when superposing, the warp 7 of upper strata spacer screen 3 can not embed in the gap of warp 7 of middle level spacer screen 4, the warp 7 of same middle level spacer screen 4 can not embed in the gap of warp 7 of lower floor's spacer screen 5, can not cause inlaying between spacer screen layer.

Secondly, in above-mentioned upper strata spacer screen 3, middle level spacer screen 4 and lower floor's spacer screen 5, the specification of nylon monofilament twine is φ 0.1mm × 19, and compared with the twine formed through pooling capital with the monofilament of normally used φ 0.15mm ~ 0.25mm, per share filament diameter is little, twine's circularity is good, many with fibrage attachment point, thus make woollen blanket in use, not easily there is felt mark in page, Incoercibility is good, good springiness, elastic recovery capability is strong, and drainability is good.

In addition, this felt adopts thicker nylon monofilament twine as parallel 8 on the spacer screen upper strata of contact sheet side, the moisture squeezed out from l Water Paper page can be scraped off fast just as scraper plate with the transversely arranged parallel 8 that paper machine operation direction is perpendicular, then force moisture fast and effeciently to enter in the inner and perforate entering the pressure roller surface of shoe press through woollen blanket of woollen blanket or rill, the flow resistance of woollen blanket inside can be reduced thus.

In addition, when nip bears high linear pressure, the felt of said structure can keep not compressed for a long time, thus makes woollen blanket have better resistance to compaction capacity and water permeability.

Described upper strata spacer screen 3, middle level spacer screen 4 and lower floor's spacer screen 5 are endless and weave.Endless weaves the requirement that can meet modern high-speed paper machine shoe press and operate steadily to felt.

The material of described surface fibre layer 1, core fibers layer 2 and backing layer fibrage 6 is polyamide fibre short fiber; The fibre fineness of described surface fibre layer 1 is 11dtex, and the fibre fineness of core fibers layer 2 and backing layer fibrage 6 is 33dtex.

This shoe press felt can adopt conventional method manufacture, Tipple Bottom net respectively on heavy loom endless weave, then three stackedly add obtained spacer screen layer, again the polyamide fibre short fiber of different fineness is laid on spacer screen layer, process through needing machine acupuncture, surface fibre layer, core fibers layer and backing layer fibrage and spacer screen layer are fixed together, eventually pass the production that HEAT SETTING and precompressed machine the utility model shoe press felt.This shoe press can not cause inlaying between spacer screen layer with felt, has water space capacity large, good permeability and the characteristic such as elastic recovery is good; During shoe press extra high for linear pressure, resistance to compaction capacity is strong, and drainability is good, the linear pressure that ability is high, long service life.

Above-mentioned detailed description of the invention is only concrete case of the present utility model, be not restriction the utility model being made to other form, any those skilled in the art may utilize the technology contents of above-mentioned announcement to be changed or be modified as the equivalent implementations of equivalent variations.But every do not depart from the prerequisite of the utility model know-why under, any simple modification, equivalent variations and the remodeling done above embodiment according to technical spirit of the present utility model, all should fall into scope of patent protection of the present utility model.

Claims

1. a shoe press felt, is characterized in that: comprise the surface fibre layer (1), core fibers layer (2), spacer screen layer and the backing layer fibrage (6) that superpose connection in turn;

Described spacer screen layer at least comprises upper strata spacer screen (3), middle level spacer screen (4) and lower floor's spacer screen (5) Tipple Bottom net, and described Tipple Bottom net is by warp (7) and parallel (8) composition, and warp (7) is arranged perpendicular to parallel (8);

The warp (7) on described upper strata spacer screen (3) is nylon monofilament, and parallel (8) is for many superfine nylon monofilaments are through the twine of plying composition;

The warp (7) in described middle level spacer screen (4) is for many superfine nylon monofilaments are through the twine of plying composition, and parallel (8) is nylon monofilament;

The warp (7) of described lower floor spacer screen (5) is nylon monofilament, and parallel (8) is for many superfine nylon monofilaments are through the twine of plying composition.

2. shoe press felt as claimed in claim 1, is characterized in that: the warp (7) on described upper strata spacer screen (3) is φ 0.2 ~ 0.5mm nylon monofilament, and parallel (8) is φ 0.1 ~ 0.25mm × 19 nylon monofilament twine; The warp (7) in described middle level spacer screen (4) is φ 0.1 ~ 0.25mm × 19 nylon monofilament twine, and parallel (8) is φ 0.2 ~ 0.5mm nylon monofilament; The warp (7) of described lower floor spacer screen (5) is φ 0.2 ~ 0.5mm nylon monofilament, and parallel (8) is φ 0.1 ~ 0.25mm × 19 nylon monofilament twine.

3. shoe press felt as claimed in claim 2, is characterized in that: the warp (7) on described upper strata spacer screen (3) is φ 0.25mm nylon monofilament, and parallel (8) is φ 0.1mm × 19 nylon monofilament twine; The warp (7) in described middle level spacer screen (4) is φ 0.1mm × 19 nylon monofilament twine, and parallel (8) is φ 0.25mm nylon monofilament; The warp (7) of described lower floor spacer screen (5) is φ 0.25mm nylon monofilament, and parallel (8) is φ 0.1mm × 19 nylon monofilament twine.

4. the shoe press felt as described in as arbitrary in claims 1 to 3, is characterized in that: described upper strata spacer screen (3), middle level spacer screen (4) and lower floor's spacer screen (5) are endless and weave.

5. shoe press felt as claimed in claim 4, is characterized in that: the material of described surface fibre layer (1), core fibers layer (2) and backing layer fibrage (6) is polyamide fibre short fiber.

6. shoe press felt as claimed in claim 5, it is characterized in that: the fibre fineness of described surface fibre layer (1) is 3.3 ~ 22dtex, the fibre fineness of core fibers layer (2) and backing layer fibrage (6) is 22 ~ 44dtex.