CN102373649B

CN102373649B - Production technology of paper and products thereof

Info

Publication number: CN102373649B
Application number: CN201010260812.1A
Authority: CN
Inventors: 王都义; 王坤; 陆春宇; 仲维武; 刘加
Original assignee: KUNSHAN BANKNOTE PAPER CO Ltd; China Banknote Printing and Minting Corp
Current assignee: Kunshan Banknote Paper Co ltd; China Banknote Printing and Minting Group Co Ltd
Priority date: 2010-08-23
Filing date: 2010-08-23
Publication date: 2016-11-16
Anticipated expiration: 2030-08-23
Also published as: CN102373649A

Abstract

The invention discloses production technology of a kind of paper and products thereof, production technology mainly includes refining step, step with slurry, step of manufacturing paper with pulp, drying steps, applying glue step, ornamenting procedure of processing, and before approach flow is manufactured paper with pulp, adding carboxymethyl hydroxypropyl cellulose (being called for short CMHPC) in slurry, it is 0.01～3.0% that this carboxymethyl hydroxypropyl cellulose (being called for short CMHPC) accounts for the mass ratio of paper pulp oven-dry weight.The one-tenth paper obtained according to above-mentioned technique adds a small amount of CMHPC, and owing to CMHPC is the auxiliary agent that a kind of character is similar to CMC, this chemical assistant introduces hydroxylpropyl groups, makes CMHPC include carboxymethyl and hydroxypropyl.While retaining the original every character of CMC, reach to promote fiber to disperse further by introducing non-ionic polar group on carboxymethyl cellulose strand thus improve retention aid and filtering aid and improve the purpose of paper strength.

Description

Production technology of paper and products thereof

Technical field

The present invention relates to production technology of a kind of paper and products thereof, particularly relate to a kind of use In improve slurry system retention and drainage effect and the production technology of paper strength performance and Its product.

Background technology

The production of paper is a complicated process, improves the intensity of paper, improves paper Evenness, improve fiber retention, improve the numerous characteristics such as de-watering of slurries usually through at paper Slurry adds what auxiliary agent obtained, but owing to the interpolation of auxiliary agent frequently can lead to obtaining Producing contradiction with production reality while performance boost, how guarantee obtains multiple Superperformance ensure normally to produce simultaneously properly functioning, to improve production run efficiency be new One of key of research success of type paper making additive.

In current paper technology, by adding CMC in the slurry, (carboxymethyl is fine Dimension element) interior keys that can improve fiber is made a concerted effort, uniformly dispersing fibre to be to reach more preferable Molding, thus improve the physical strength of papery；CMC is also used as a kind of dispersion Agent, opens fully dispersed to the filler particles used with its compatibility and fiber fines, makes whole Individual slurry forms the system of a stable uniform.But paper pulp is helped by this CMC additive Stay drainage characteristic to need further to improve, and the paper strength produced is relatively low.

Summary of the invention

In order to overcome drawbacks described above, the invention provides a kind of paper production technology and It is original every that product, this technique and the paper produced according to this technique not only remain CMC Characteristic, and further increase the auxiliary agent retention aid and filtering aid performance to slurry paper with to become paper strong Degree.

The present invention is to solve that its technical problem be the technical scheme is that a kind of paper Production technology, mainly include refining step, step with slurry, step of manufacturing paper with pulp, be dried Step, applying glue step, ornamenting procedure of processing, before approach flow is manufactured paper with pulp, to slurry Material adds carboxymethyl hydroxypropyl cellulose (being called for short CMHPC), and this carboxymethyl hydroxyl It is 0.01～3.0 that propyl cellulose (being called for short CMHPC) accounts for the mass ratio of paper pulp oven-dry weight %.

As a further improvement on the present invention, before approach flow is manufactured paper with pulp, adding Carboxymethyl hydroxypropyl cellulose adds wet strength agent before or after (being called for short CMHPC), And mix homogeneously with carboxymethyl hydroxypropyl cellulose (being called for short CMHPC).

As a further improvement on the present invention, described wet strength agent be at least Lauxite, Melamine formaldehyde resin, Polyamide-Polyamsne-Epichlorohydrin resin, polyamide table Epichlorohydrin resin, polycarboxylic acids, chitosan, dialdehyde starch, Biformyl one acrylamide connect One of graft copolymer and polymine.The addition of described wet strength agent accounts for paper pulp over dry The mass ratio of amount is 0.01%～5.0%

Additionally the present invention also provides for a kind of paper manufactured such as said method, and by this paper The file produced.

The invention has the beneficial effects as follows: in the production process of paper, to serosity Carboxymethyl hydroxypropyl cellulose (being called for short CMHPC) is added as adding when carrying out with slurry Agent, owing to this CMHPC is the chemical assistant of a kind of similar CMC, this auxiliary agent with CMC compares and introduces hydroxylpropyl groups, makes carboxymethyl hydroxypropyl cellulose include carboxylic Methyl and hydroxypropyl.By introducing nonionic pole on carboxymethyl cellulose strand Property group, reach to promote further fiber retaining while the original every character of CMC Element dispersion, thus improve retention aid and filtering aid and improve the purpose of paper strength.

Detailed description of the invention

The production technology of paper of the present invention, mainly comprises the steps that

1. slurry jordan is carried out refining, it is thus achieved that serosity.Wherein, slurry is for planting Fibres (such as cotton fiber, the wood fiber, grass fiber, flaxen fiber, hide fiber), dynamic The mixing of one or more in fibres, chemical fibre.

2. in the serosity after refining, addition chemical assistant, filler, adjuvant carry out with slurry, Obtain paper pulp.Wherein, (it is called for short containing carboxymethyl hydroxypropyl cellulose in chemical assistant CMHPC), the substitution value DS of this carboxymethyl hydroxypropyl cellulose (being called for short CMHPC) >=0.9, substitution value MS >=0.10, viscosity >=1000mPa.s, and this carboxymethyl hydroxyl It is 0.01～2 that propyl cellulose (being called for short CMHPC) accounts for the mass ratio of paper pulp oven-dry weight %；Filler is titanium dioxide, Kaolin or the like；Adjuvant be anion catching agent, Defoamer, antibacterial or the like.

CMHPC is the auxiliary agent that a kind of character is similar to CMC, and this chemical assistant mainly leads to Cross introducing hydroxylpropyl groups, make carboxymethyl hydroxypropyl cellulose (CMHPC) include carboxylic Methyl and hydroxypropyl.By introducing nonionic pole on carboxymethyl cellulose strand Property group reach to promote further fiber dispersion thus improve retention aid and filtering aid and improve paper The purpose of Zhang Qiangdu.

3. the paper pulp obtained after with slurry is delivered to paper machine manufacture paper with pulp.

4. the l Water Paper obtained after manufacturing paper with pulp is dried, and is tentatively become paper.

5. above-mentioned preliminary one-tenth paper is carried out top sizing.

6. the preliminary one-tenth paper after top sizing is carried out after drying, finally become Paper.

Embodiment 1:

After refining process, add after first adding titanium dioxide, preservative in stock tank Entering CMHPC, controlling CMHPC to one-tenth paper major ingredient fiber mass ratio as shared by it is 0.01%, before delivering to paper machine wet end, add wet strength agent carbamide tree Fat, controls melamine formaldehyde resin to becoming paper major ingredient fiber mass ratio as shared by it Being 0.5%, uniformly after mixing, slurry is transported to paper machine and manufactures paper with pulp, and is manufactured into L Water Paper；Being dried l Water Paper, then carry out top sizing, sizing material used is PVA； Again the preliminary one-tenth paper after top sizing is carried out after drying, finally become paper.

Embodiment 2:

After refining process, add in process with slurry, operation with slurry Kaolin and defoamer, uniformly after mixing, be initially charged wet strength agent at paper machine wet end and gather Polyamide-polyamino epichlorohydrin resin, and control Polyamide-Polyamsne-Epichlorohydrin resin It is 1.0% to becoming paper major ingredient fiber mass ratio as shared by it, is subsequently adding CMHPC, control CMHPC processed is 0.5% to becoming paper major ingredient fiber mass ratio as shared by it, mix homogeneously After, slurry is transported to paper machine and manufactures paper with pulp, and is manufactured into l Water Paper；L Water Paper is carried out Being dried, then carry out top sizing, sizing material used is AKD；After again to top sizing Preliminary one-tenth paper carries out after drying, is finally become paper.

Embodiment 3:

After refining process, add in process with slurry, operation with slurry Calcium carbonate, anion catching agent and preservative, defeated before delivering to paper machine wet end Send in slurry pipe and be initially charged CMHPC, control CMHPC to becoming paper major ingredient fiber as shared by it Mass ratio is 1.5%, is subsequently adding wet strength agent polyamide epichlorohydrin resin, controls poly- Amide epichlorohydrin resins is 2.0% to becoming paper major ingredient fiber mass ratio as shared by it, all After even mixing, slurry is transported to paper machine and manufactures paper with pulp, and is manufactured into l Water Paper；To wet Paper is dried, and the preliminary one-tenth paper being dried processes through further top sizing, then It is fabricated to finally become paper through being dried.

Embodiment 4:

After refining process, the slurry pipe of the conveying slurry after refining adds CMHPC, controlling CMHPC to becoming paper major ingredient fiber mass ratio as shared by it is 2.0%, Pulvis Talci, dyestuff and preservative is added in process with slurry, operation with slurry, After process mix homogeneously with slurry, added wet before delivering to paper machine wet end Strong agent polycarboxylic acids, and control polycarboxylic acids to becoming paper major ingredient fiber mass ratio as shared by it to be After 2.5% is sufficiently mixed, slurry is transported to paper machine and manufactures paper with pulp, and is manufactured into l Water Paper； Being dried l Water Paper, the preliminary one-tenth paper being dried is at further top sizing Reason, drying is fabricated to finally become paper.

Embodiment 5:

After refining process, add in process with slurry, operation with slurry Filler, adjuvant, be initially charged chitosan in header box, and control chitosan to becoming paper master Material fiber mass ratio as shared by it is 3.0%, is subsequently adding CMHPC, controls CMHPC It is 2.5% to becoming paper major ingredient fiber mass ratio as shared by it, after mix homogeneously, slurry quilt It is transported to paper machine manufacture paper with pulp, is manufactured into l Water Paper；L Water Paper is dried, is dried Preliminary become paper process through further top sizing, drying is fabricated to Become paper eventually.

Embodiment 6:

After refining process, add after first adding titanium dioxide, preservative in stock tank Entering CMHPC, controlling CMHPC to becoming paper major ingredient fiber mass ratio as shared by it is 3.0%, Before delivering to paper machine wet end, add wet strength agent dialdehyde starch, and control dialdehyde starch After being 4.0% uniform mixing to becoming paper major ingredient fiber mass ratio as shared by it, slurry quilt It is transported to paper machine manufacture paper with pulp, is manufactured into l Water Paper；L Water Paper is dried, then enters Row top sizing, sizing material used is PVA；Again the preliminary one-tenth paper after top sizing is entered Row after drying, is finally become paper.

Embodiment 7:

After refining process, add in process with slurry, operation with slurry Filler, adjuvant, add CMHPC before neat and well spaced jordan, control in conveyance conduit CMHPC is 1.8% to becoming paper major ingredient fiber mass ratio as shared by it, adds wet strength agent afterwards Biformyl one acrylamide grafted copolymer, and control Biformyl one acrylamide graft Copolymer is 4.5% to becoming paper major ingredient fiber mass ratio as shared by it, after mix homogeneously, Slurry is transported to paper machine and manufactures paper with pulp, and is manufactured into l Water Paper；L Water Paper is dried, The preliminary one-tenth paper being dried processes through further top sizing, drying manufacture For finally becoming paper.

Embodiment 8:

After refining process, add in process with slurry, operation with slurry Filler, adjuvant, be initially charged wet strength agent polyethylene after neat and well spaced jordan in conveyance conduit Imines, and control polymine to become paper major ingredient fiber mass ratio as shared by it be 5.0%, it is subsequently adding CMHPC, controls CMHPC to becoming paper major ingredient fiber as shared by it Mass ratio is 2.8%, and after mix homogeneously, slurry is transported to paper machine and manufactures paper with pulp, It is manufactured into l Water Paper；Being dried l Water Paper, the preliminary one-tenth paper being dried is through further Top sizing processes, and drying is fabricated to finally become paper.

With obtained by above-mentioned technique become paper main component include major ingredient fiber, CMHPC, other chemical assistant, filler, adjuvant, wherein, CMHPC is to becoming paper master Material fiber mass ratio as shared by it is 0.01%～3.0%, and wet strength agent is fine to becoming paper major ingredient Dimension mass ratio as shared by it is 0.01%～5%, other chemical assistant (such as preservative), Filler, adjuvant are all by being added thereto in right amount.

The major ingredient fiber of described one-tenth paper is that Plant fiber is (such as cotton fiber, the wood fiber, grass Fiber, flaxen fiber, hide fiber), animal fiber, one or several in chemical fibre The mixing planted.

Claims

1. a production technology for paper, mainly include refining step, step with slurry, Manufacture paper with pulp step, drying steps, applying glue step, ornamenting procedure of processing, it is characterised in that: Before approach flow is manufactured paper with pulp, in slurry, add carboxymethyl hydroxypropyl cellulose, and It is 0.01～3.0 that this carboxymethyl hydroxypropyl cellulose accounts for the mass ratio of paper pulp oven-dry weight %；Before approach flow is manufactured paper with pulp, adding before carboxymethyl hydroxypropyl cellulose or Add wet strength agent after person, and mix homogeneously with carboxymethyl hydroxypropyl cellulose；Described Wet strength agent is at least Lauxite, melamine formaldehyde resin, polyamide polyamines ring Oxygen chloropropane resin, polyamide epichlorohydrin resin, polycarboxylic acids, chitosan, dialdehyde form sediment One of powder, Biformyl one acrylamide grafted copolymer and polymine；Described wet It is 0.01%～5.0% that the addition of strong agent accounts for the mass ratio of paper pulp oven-dry weight.

2. the paper that the method for claim 1 manufactures.

3. the file produced by the paper described in claim 2.