CN103290716A - Process for manufacturing improved pulp net - Google Patents

Abstract

The invention discloses a process for manufacturing an improved pulp net. The process includes steps of thread purchasing, thread inspection, warping, drafting, net weaving, net inspection, primary setting, net cutting, splicing, secondary setting, finished product inspection, packaging, warehousing and the like. The process has the advantages that owing to scientific and reasonable thread diameters and densities of warps and wefts and the process for weaving and manufacturing the improved pulp net by the aid of proper tension, a net of the improved pulp net is compact and stable in structure, meshes of the improved pulp net are regular and uniform, the improved pulp net is not easy to deform, excellent dehydration is guaranteed, and the process is applicable to low-speed pulp machine for manufacturing heavy-weight pulp boards.

Description

The production technology of slurry net is copied in a kind of improvement

Technical field

The present invention relates to a kind of improvement and copy the production technology of slurry net.

Background technology

Because the pulpboard grammes per square metre is generally greater than 500g/m ², intensive abundant, the dehydration difficulty makes the speed of pulp machine be difficult to improve.Present domestic low speed pulp machine also is being extensive use of, and the employed slurry net of copying mostly is single-layer products greatly, but exist that fiber loss is big, mesh is yielding, insufficient strength, short problem of life-span.My company copies the slurry net to individual layer and improves through test of many times, use on the paper machine back in pulpboard evenness, prevent that aspects such as fiber loss, dehydration, life-span from obtaining positive effect.

Summary of the invention

The object of the present invention is to provide a kind of improvement to copy the production technology of slurry net, prevent fiber loss, improve the pulp washing net life-span.

For achieving the above object, the technical solution used in the present invention is as follows:

The production technology of slurry net is copied in a kind of improvement, may further comprise the steps:

(1) wire rod is bought

According to production schedule requirement, by model, quality, quantity import Germany high-quality monofilament;

(2) wire rod check

Indexs such as the line footpath that requires according to the production schedule, pyrocondensation, TENSILE STRENGTH, acid-alkali-resistant degree are checked item by item, inspect by random samples in batches and examine entirely according to concrete production requirement, and the wire rod test stone is as follows:

Warp: Ф 0.70-0.80mm, TENSILE STRENGTH: 550-600N/mm ², pyrocondensation value: 10-12%;

Parallel: Φ 0.70-0.80mm, TENSILE STRENGTH: 500-550N/mm ², pyrocondensation value: 2-4%;

(3) warping

Require every monofilament even tension unanimity, speed of beaming: 25-30m/min, tension force: 75-80 kilogram/ring;

(4) pass head

According to the fabric drafting plan, gait on request;

(5) knitmesh

Carry out knitmesh according to fabric organization chart, the complete organization warp adopts 6 heddle (heald)s to weave, and the complete organization parallel is 6 row, through close 7-8 root/cm, and 7-8/cm of filling density, Air permenbility: 8000-9000m ³/ m ²H;

(6) test net

Woven webs is carried out Pre-testing, handle dictyosome flaw, the registration of the market of going forward side by side condition, provide foundation for rationally cutting net;

(7) once typing

According to the number of turns typing faller speed, heating-up temperature are set, longitudinal tension force multiply by setting value according to the net width, calculate vertically the control that stretches of total tension force input setting machine, horizontal tentering device shrinks control by set point value input setting machine, makes the stability and the service life that reach the regulation elongation, shrink and breathe freely, improve net after the net typing;

(8) cut net

Cut net by the net type of customer requirements, ventilative, specification, must carry out strict preliminary examination according to the production work ticket before cutting net, avoid problematic dictyosome, assembly is rationally cut, and guarantees into the net rate;

(9) peg graft

Peg graft according to customer requirements, for guaranteeing the dictyosome quality, automatically the grafting machine is pegged graft, speed is fast, slotting point is evenly distributed, wire side is smooth, quality good to adopt external import;

(10) secondary typing

Last setting machine carries out the secondary typing, temperature is 150-160 ℃, length is elongated the 10-12 centimetre by elongating the 5-6 centimetre below 20 meters more than 20 meters, horizontal tension remains on the 140-150 kilogram, speed be 3-4 rice/minute, the burr of pruning then and pegging graft and stay, the use width of pressing user's paper machine excises both sides, holds with electric iron and melts edge sealing, otherwise off-line, with import PPS glue on request heat melt infiltration in the selvage dictyosome;

(11) finished product inspection

With reference to polyester webs forming web industry standard, recheck comprehensively, length and width, ventilative, through close, filling density, net flatness, joint strength etc., undesirable resolutely refusing let pass, what guarantee to offer the client is the high-quality certified products;

(12) packing warehouse-in

Packing case is worn silk, the quality certification, is put in accordance with regulations by standard customization, packing case outward appearance model specification, direction, moistureproof indicate, handle with care etc. identify clear.

Beneficial effect of the present invention:

The present invention adopts scientific and rational thread count and line footpath, and suitable tension force is weaved and production technology, make the dictyosome structure closely, stable, mesh is regular evenly, not yielding, guarantees well dehydration, the production of suitable high grammes per square metre pulpboard low speed pulp machine is used.The present invention has also adopted the complete anti-hydrolysis monofilament of high-quality import, this monofilament is high temperature resistant, antipollution, corrosion-resistant, loss of strength is slow, has ensured intensity and the service life of dictyosome.

Description of drawings

Fig. 1 copies slurry net flow sheet for the present invention improves.

Fig. 2 copies slurry meshi fabric organization chart for the present invention improves.

Fig. 3 is setting process parameter of production technology of the present invention.

The specific embodiment

The production technology of slurry net is copied in a kind of improvement, may further comprise the steps:

(1) wire rod is bought

According to production schedule requirement, by model, quality, quantity import Germany high-quality monofilament;

(2) wire rod check

Indexs such as the line footpath that requires according to the production schedule, pyrocondensation, TENSILE STRENGTH, acid-alkali-resistant degree are checked item by item, inspect by random samples in batches and examine entirely according to concrete production requirement, and the wire rod test stone is as follows:

Warp: Ф 0.80mm, TENSILE STRENGTH: 600N/mm ², pyrocondensation value: 10%;

Parallel: Φ 0.80mm, TENSILE STRENGTH: 550N/mm ², pyrocondensation value: 3%;

(3) warping

Require every monofilament even tension unanimity, speed of beaming: 30m/min, tension force: 80 kilograms/ring;

(4) pass head

According to the fabric drafting plan, gait on request;

(5) knitmesh

Carry out knitmesh according to fabric organization chart, the complete organization warp adopts 6 heddle (heald)s to weave, and the complete organization parallel is 6 row, through close 8/cm, and 8/cm of filling density, Air permenbility: 9000m ³/ m ²H;

(6) test net

Woven webs is carried out Pre-testing, handle dictyosome flaw, the registration of the market of going forward side by side condition, provide foundation for rationally cutting net;

(7) once typing

According to the number of turns typing faller speed, heating-up temperature are set, longitudinal tension force multiply by setting value according to the net width, calculate vertically the control that stretches of total tension force input setting machine, horizontal tentering device shrinks control by set point value input setting machine, makes the stability and the service life that reach the regulation elongation, shrink and breathe freely, improve net after the net typing;

(8) cut net

Cut net by the net type of customer requirements, ventilative, specification, must carry out strict preliminary examination according to the production work ticket before cutting net, avoid problematic dictyosome, assembly is rationally cut, and guarantees into the net rate;

(9) peg graft

Peg graft according to customer requirements, for guaranteeing the dictyosome quality, automatically the grafting machine is pegged graft, speed is fast, slotting point is evenly distributed, wire side is smooth, quality good to adopt external import;

(10) secondary typing

Last setting machine carries out the secondary typing, temperature is 155 ℃, length is elongated 12 centimeters by elongating 6 centimeters below 20 meters more than 20 meters, and horizontal tension remains on 145 kilograms, speed is 4 meters/minute, the burr of pruning then and pegging graft and stay, the use width of pressing user's paper machine excises both sides, holds with electric iron and melts edge sealing, otherwise off-line, with import PPS glue on request heat melt infiltration in the selvage dictyosome;

(11) finished product inspection

With reference to polyester webs forming web industry standard, recheck comprehensively, length and width, ventilative, through close, filling density, net flatness, joint strength etc., undesirable resolutely refusing let pass, what guarantee to offer the client is the high-quality certified products;

(12) packing warehouse-in

Packing case is worn silk, the quality certification, is put in accordance with regulations by standard customization, packing case outward appearance model specification, direction, moistureproof indicate, handle with care etc. identify clear.

The present invention's improvement is copied the slurry net and shown in the use of how tame paper plant: the pulpboard forming quality is good, and dictyosome is easy to clean, has improved the runnability of paper machine, has improved the economic benefit of paper plant, and repercussion is good.Under the speed of a motor vehicle of 60 meters/minute of illustrious and influential, the green hill paper of Teng industries, reach more than 8 months service life in Fujian.

Claims (1)

1. the production technology that slurry is netted is copied in an improvement, it is characterized in that may further comprise the steps:

(1) wire rod is bought

According to production schedule requirement, by model, quality, quantity import Germany high-quality monofilament;

(2) wire rod check

Indexs such as the line footpath that requires according to the production schedule, pyrocondensation, TENSILE STRENGTH, acid-alkali-resistant degree are checked item by item, inspect by random samples in batches and examine entirely according to concrete production requirement, and the wire rod test stone is as follows:

Warp: Ф 0.70-0.80mm, TENSILE STRENGTH: 550-600N/mm ², pyrocondensation value: 10-12%;

Parallel: Φ 0.70-0.80mm, TENSILE STRENGTH: 500-550N/mm ², pyrocondensation value: 2-4%;

(3) warping

Require every monofilament even tension unanimity, speed of beaming: 25-30m/min, tension force: 75-80 kilogram/ring;

(4) pass head

According to the fabric drafting plan, gait on request;

(5) knitmesh

Carry out knitmesh according to fabric organization chart, the complete organization warp adopts 6 heddle (heald)s to weave, and the complete organization parallel is 6 row, through close 7-8 root/cm, and 7-8/cm of filling density, Air permenbility: 8000-9000m ³/ m ²H;

(6) test net

Woven webs is carried out Pre-testing, handle dictyosome flaw, the registration of the market of going forward side by side condition, provide foundation for rationally cutting net;

(7) once typing

According to the number of turns typing faller speed, heating-up temperature are set, longitudinal tension force multiply by setting value according to the net width, calculate vertically the control that stretches of total tension force input setting machine, horizontal tentering device shrinks control by set point value input setting machine, makes the stability and the service life that reach the regulation elongation, shrink and breathe freely, improve net after the net typing;

(8) cut net

Cut net by the net type of customer requirements, ventilative, specification, must carry out strict preliminary examination according to the production work ticket before cutting net, avoid problematic dictyosome, assembly is rationally cut, and guarantees into the net rate;

(9) peg graft

Peg graft according to customer requirements, for guaranteeing the dictyosome quality, automatically the grafting machine is pegged graft, speed is fast, slotting point is evenly distributed, wire side is smooth, quality good to adopt external import;

(10) secondary typing

Last setting machine carries out the secondary typing, temperature is 150-160 ℃, length is elongated the 10-12 centimetre by elongating the 5-6 centimetre below 20 meters more than 20 meters, horizontal tension remains on the 140-150 kilogram, speed be 3-4 rice/minute, the burr of pruning then and pegging graft and stay, the use width of pressing user's paper machine excises both sides, holds with electric iron and melts edge sealing, otherwise off-line, with import PPS glue on request heat melt infiltration in the selvage dictyosome;

(11) finished product inspection

With reference to polyester webs forming web industry standard, recheck comprehensively, length and width, ventilative, through close, filling density, net flatness, joint strength etc., undesirable resolutely refusing let pass, what guarantee to offer the client is the high-quality certified products;

(12) packing warehouse-in

Packing case is worn silk, the quality certification, is put in accordance with regulations by standard customization, packing case outward appearance model specification, direction, moistureproof indicate, handle with care etc. identify clear.

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