CN201762608U

CN201762608U - High-transverse-stiffness three-layer paper making forming screen

Info

Publication number: CN201762608U
Application number: CN2010202842463U
Authority: CN
Inventors: 董华伟; 王友保
Original assignee: Henan Huafeng Polyester Net Industrial Co Ltd
Current assignee: Henan Huafeng Polyester Wire Mesh Science & Technology Co., Ltd.
Priority date: 2010-08-06
Filing date: 2010-08-06
Publication date: 2011-03-16
Anticipated expiration: 2020-08-06

Abstract

The utility model discloses a high-transverse-stiffness three-layer paper making forming screen, which comprises a surface screen and a bottom screen, wherein the surface screen and the bottom surface are formed by crossing and weaving warp threads and weft threads, and are connected and compounded through connecting threads, the surface screen adopts a dual-trace tabby weaving structure, the bottom screen adopts a six-trace broken sateen weaving structure, the warp threads comprise surface screen warp threads and bottom screen warp threads, the surface screen warp threads and the bottom screen warp threads respectively have the thread diameters of 0.18mm and 0.22mm, the weaving density of both the surface screen warp threads and the bottom screen warp threads is 24/cm, and the weft threads comprise surface screen weft threads and bottom screen weft threads, wherein the surface screen weft threads are formed by nylon surface screen weft threads and polyester surface screen weft threads, the thread diameter of both the nylon surface screen weft threads and the polyester surface screen weft threads is 0.18mm, the nylon surface screen weft threads are adopted as the connecting threads, and an asymmetrical connecting manner is adopted for connecting and compounding the surface screen and the bottom screen. The utility model improves the transverse stiffness of the forming screen, enhances the deformation resistance capability when in use, and is more suitable for the operation of high-vehicle-speed paper machines.

Description

A kind of three-layer paper making forming net with high lateral stiffness

Technical field

The utility model relates to pulp technology for making paper, especially relates to a kind of three-layer paper making forming net with high lateral stiffness.

Background technology

At present, routine manufacture paper with pulp quantitative 55 grams/square metre more than the 2B5616 series net of cultural paper, veil and spacer screen through be usually used in manufacturing paper with pulp cultural paper and paper machine of the laminated network, this series net warp-wise density is 56 pieces/centimeter, warp line footpath 0.17mm, face picks is eight comprehensive satin weave weaves, one thick (0.18mm polyester) thin (0.13mm polyester) parallel, back weft is isometrical (0.35mm polyester), (0.35mm nylon) 16 is combined broken satin weave, latitudinal density can reach 60 pieces/centimeter, this series net net structure is stable, air permeability and fiber retention are medium, the dehydration that is shaped is good, life-span is also better, but owing to be two and half braided structures, and warp interts surface layer (one-tenth paper, also be paper) and bottom (machine side, also be flour milling), selecting for use of wire range is restricted, if the line grade is thick, then tensile strength increases, but influence surface formable layer effect; If the line grade is thin, the surface forming effect is better, but the net endwise tensile strength is affected, and therefore two and half nets structurally are difficult to address the above problem.Simultaneously, latitudinal density can be accomplished 60 pieces/centimeter under the situation of back weft use 0.35mm, and it will be very difficult improving latitudinal density again, and the lateral stiffness of wet end is restricted like this, is difficult to adapt to manufacturing paper with pulp of high-speed paper machine; Simultaneously, the wear-resisting volume 12/16 that the net bottom latitude is provided, the back weft structure is pine, has limited net stability and service life.

The utility model content

In view of this, the purpose of this utility model is to provide a kind of three-layer paper making forming net with high lateral stiffness, improves the forming net lateral stiffness, and the non-deformability that strengthens when using is strong, is more suitable for high speed of a motor vehicle paper machine operation.

For achieving the above object, the utility model by the following technical solutions:

A kind of three-layer paper making forming net with high lateral stiffness of the present utility model, comprise the veil and the spacer screen that become with the parallel weaving by warp, it is compound that veil and spacer screen are connected by connecting line, and veil adopts two to combine the plain weave structures, and spacer screen adopts six to combine broken satin weave structures; Described warp comprises veil warp and spacer screen warp, and the line of veil warp and spacer screen warp directly is respectively 0.18mm and 0.22mm, and the count of veil warp and spacer screen warp is 24/cm; Described parallel comprises veil parallel and spacer screen parallel, and wherein, the veil parallel is made up of nylon veil parallel and polyester veil parallel that line directly is 0.18mm; Employing nylon veil parallel is as connecting line and adopt asymmetric connected mode to connect compound veil and spacer screen.

Further, described spacer screen parallel employing line directly is that 0.40mm polyester spacer screen parallel and line directly are the collocation of 0.42mm nylon spacer screen parallel.

The beneficial effects of the utility model are: compared with prior art, one group of circular route footpath of three-layer forming net broadwise of the present utility model is respectively: 0.18mm polyester veil parallel, 0.18mm nylon veil parallel, 0.18mm nylon veil parallel, 0.40mm polyester spacer screen parallel or 0.42 nylon spacer screen parallel, and latitudinal density is 63 pieces/centimeter; And one group of circular route footpath of two layers of half form net broadwise is respectively: the 0.13mm(polyester), 0.18mm(nylon), 0.35mm(polyester or nylon), latitudinal density is 60 pieces/centimeter; The thick density height simultaneously in obvious the utility model equator line footpath; And three to the two structure three-layer network weft densities that symmetry connects have only 52 pieces/centimeter, so three-layer forming net lateral stiffness of the present utility model is obviously promoted, when the paper machine is copied the paper use, the net non-deformability is strong, can resist the high vacuum suction of paper machine suction flat box, reduce the degree of paper machine, be fit to high speed of a motor vehicle paper machine operation with the wearing and tearing of selvage portion.Other advantages of the present utility model, target and feature will be set forth to a certain extent in the following description, and to a certain extent, based on being conspicuous to those skilled in the art, perhaps can from practice of the present utility model, obtain instruction to investigating hereinafter.Target of the present utility model and other advantages can realize and obtain by specifically noted structure in following specification and the accompanying drawing.

Description of drawings

Fig. 1 be veil structural representation of the present utility model (along with the section of machine direction vertical direction);

Fig. 2 be spacer screen structural representation of the present utility model (along with the section of machine direction vertical direction);

Fig. 3 be the asymmetric syndeton schematic diagram of veil of the present utility model and spacer screen (along with the section of machine direction vertical direction).

The specific embodiment

Below in conjunction with drawings and Examples the utility model is further described.

In conjunction with Fig. 1, Fig. 2 and shown in Figure 3, during enforcement, veil and spacer screen that three-layer paper making forming net with high lateral stiffness of the present utility model is become with the parallel weaving by warp, veil adopts two to combine the plain weave structure, spacer screen adopts six to combine broken satin weave structure, and it is compound by nylon veil parallel from being formed by connecting by veil and spacer screen, 53 pieces/centimeter of warp-wise density, latitudinal density can select different line footpaths to arrange in pairs or groups mutually with density, conventional filling density is 63 pieces/centimeter, can be applicable to the above cultural paper of 50 grams and manufacture paper with pulp, also can be used for the face of wrapping paper paper machine of the laminated network, lining, spacer screen.The warp of the forming net in the present embodiment comprises veil warp 1 and spacer screen warp 4, and the line of veil warp 1 and spacer screen warp 4 directly is respectively 0.18mm and 0.22mm, and the count of veil warp 1 and spacer screen warp 4 is 24/cm.Described parallel comprises veil parallel 2 and spacer screen parallel 3, wherein, veil parallel 2 is made up of nylon veil parallel and polyester veil parallel that line directly is 0.18mm, the programming structure of veil promptly by a polyester veil parallel and two nylon veil parallels up and down connecting line form one group of plain weave structure.It directly is that 0.40mm polyester spacer screen parallel and line directly are the collocation of 0.42mm nylon spacer screen parallel reducing that described spacer screen parallel 3 adopts line, and promptly spacer screen parallel 3 selection 0.40mm polyester spacer screen parallels and line are directly arranged in pairs or groups mutually for 0.42mm nylon spacer screen parallel or be used alone all right.Veil adopts veil parallel self to be connected with spacer screen, adopts asymmetric connected mode to connect, and line footpath 0.18mm nylon veil parallel is as connecting line, adopt two-to-one structure, i.e. in every group of four steps of circulation, wherein two steps were to connect step number, bonding strength is big, and it is quite firm that veil is connected with spacer screen.(there were two steps to connect in the circulation that six steps were formed) when need to prove employing three to two structures and can design the symmetrical braiding texture structure that connects, and when adopting two-to-one structure, symmetry connects the braiding texture structure to be false, so this difficult problem has been separated soon in the asymmetric connection of ingenious use well.

1), forming effect the advantage of present embodiment forming net:: veil adopts two of fine line diameter parallel to combine the plain weave weaves, the intertwined point, surface is many, forming effect is good when manufacturing paper with pulp, page is easily peeled off, two differences of paper are little, fully satisfy the forming requirements when copying paper, fiber fines and filler retention height have tangible saving green plants and reduce the environment protecting that reduces discharging simultaneously; 2), wear-resisting effect: spacer screen adopts than thick line footpath warp (normally 0.22mm) with than six of thick line footpath parallel (normally 0.40mm) and combines forging line weave, the tensile strength of net MCD direction (machine direction) is big, the floating long line ratio of spacer screen parallel reaches 5/6, obviously be better than ABRASION RESISTANCE 12/16,16 the combining 5/8 and 20 of three-layer network spacer screen parallels and combine 4/5 of three-layer network spacer screen parallels of two layers of net bottom net parallel preferably, ABRASION RESISTANCE is best; Simultaneously enough can produce the bigger wear-resisting volume of spacer screen parallel by HEAT SETTING than thick line parallel stretch bending song directly than thick line footpath warp, thus the life-span of forming net improved fully, this point two and half nets can't be realized; 3), the lateral stiffness effect: one group of circular route of the three-layer forming net broadwise of present embodiment footpath is respectively: the 0.18mm(polyester), 0.18mm(nylon), 0.18mm(nylon), 0.40mm(polyester or nylon), latitudinal density is 63 pieces/centimeter; And one group of circular route footpath of two layers of half form net broadwise is respectively: the 0.13mm(polyester), 0.18mm(nylon), 0.35mm(polyester or nylon), latitudinal density is 60 pieces/centimeter; Obviously, three-layer network on year-on-year basis, the thick density height simultaneously in parallel line footpath; And three to the two structure three-layer network weft densities that symmetry connects have only 52 pieces/centimeter, so the three-layer forming net lateral stiffness of present embodiment is obviously promoted, when the paper machine is copied the paper use, the net non-deformability is strong, can resist the high vacuum suction of paper machine suction flat box, reduce the degree of paper machine, be fit to high speed of a motor vehicle paper machine operation with the wearing and tearing of selvage portion.4), bonding strength effect: four steps of three-layer forming net circulation of present embodiment had two steps to connect, there is the three-layer forming net of two steps connection in six steps of circulation that are different from symmetrical syndeton, bonding strength obviously promotes, avoid friction wear and the layering that may occur between surface layer net and the underlying network effectively, be more suitable for the operation of manufacturing paper with pulp of high-speed paper machine; 5), dehydrating effect: the thickness of the three-layer forming net of present embodiment is strengthened, net free space amount increases, and net is ventilative obviously to be improved with drainage capacity, is better than two layers of half form net, help the raising of paper machine speed and the decline of forming section current capacity, tangible economize on electricity low-carbon (LC) character is arranged.

Need to prove that at last forming net of the present utility model has been converted into actual batch process, use checking through the Duo Jia paper mill, produce a desired effect fully and economy.Be specially:

Example one, the cultural paper of gram is copied more than 70 by Henan Province XX investor group limited company 2640/550, using two and half nets to manufacture paper with pulp under the equal situation of condition, uses three-layer network effect clear superiority: A, becomes paper paper evenness effect to improve; B, fiber fines and filler retention improve; C, drainage capacity improve, and current capacity descends; D, service life rose to 32 days by original 15 days.

Example two, Hunan XX Paper Co., Ltd 3200/550 smart ox paper is using two and half nets to manufacture paper with pulp under the equal situation of condition, and use three-layer network effect clear superiority: A, fiber fines and filler retention improve, and have reduced the use amount of retention and drainage aid agent; Anti-Zhang Nengli is strong for B, net in service, and the net longitudinal extension reduces, and paper machine operation is highly stable; C, drainage capacity improve, and current capacity descends; D, service life rose to 60 days by original 35 days.

Example three, Liaoning XX slurry paper company 2640/500 cultural paper of manufacturing paper with pulp, new paper machine is firstly used three-layer network of the present utility model, and service life was above 60 days.

Claims

1. three-layer paper making forming net with high lateral stiffness, comprise the veil and the spacer screen that become with the parallel weaving by warp, it is compound that veil and spacer screen are connected by connecting line, it is characterized in that: veil adopts two to combine the plain weave structures, and spacer screen adopts six to combine broken satin weave structures; Described warp comprises veil warp and spacer screen warp, and the line of veil warp and spacer screen warp directly is respectively 0.18mm and 0.22mm, and the count of veil warp and spacer screen warp is 24/cm; Described parallel comprises veil parallel and spacer screen parallel, and wherein, the veil parallel is made up of nylon veil parallel and polyester veil parallel that line directly is 0.18mm; Employing nylon veil parallel is as connecting line and adopt asymmetric connected mode to connect compound veil and spacer screen.

2. three-layer paper making forming net with high lateral stiffness according to claim 1 is characterized in that: it directly is that 0.40mm polyester spacer screen parallel and line directly are the collocation of 0.42mm nylon spacer screen parallel that described spacer screen parallel adopts line.