CN210341486U

CN210341486U - Production system of two adhesive tapes

Info

Publication number: CN210341486U
Application number: CN201920817914.5U
Authority: CN
Inventors: 韩冲; 杨文恒
Original assignee: Nine Dragons Paper Holdings Ltd
Current assignee: Nine Dragons Paper Holdings Ltd
Priority date: 2019-05-31
Filing date: 2019-05-31
Publication date: 2020-04-17
Anticipated expiration: 2029-05-31

Abstract

The application provides a double-offset paper production system, which comprises a waste white paper pulping system, a softwood pulping system and a paper machine approach flow system, wherein the waste white paper pulping system sequentially comprises a rotary drum pulper for defibering waste white paper, a first impurity removal system for removing impurities, a first multi-disc for concentrating paper pulp, a first thermal dispersion device, a second impurity removal system for further removing impurities and a pulp tower for storing pulp along a production flow; the softwood pulping system comprises a hydrapulper, a wood pulp disc mill and a wood pulp pool for storing wood pulp in sequence, and pulp in the pulp tower and the wood pulp in the wood pulp pool are conveyed to the paper machine approach system. The utility model provides a two adhesive tape production systems uses waste paper as main raw and other materials, through multichannel edulcoration process, and the colour reaches the index requirement, and the two adhesive tape of soft light eyeshield true qualities of making have the residual effect of even single fibre, and the paper is fine and smooth soft simultaneously, gives other people the sensation of nature.

Description

Production system of two adhesive tapes

Technical Field

The application relates to a double-sided offset paper production system, in particular to a manufacturing process of soft eye-protecting natural-color double-sided offset paper.

Background

The technical scheme includes that ① the paper surface requires obvious natural fiber raw material retention to create a feeling close to nature, ② unique color indexes include a whiteness and a color value of 63% ISO, a L value of 89, an a value of-0.8 (greenish) and a b value of 10.0 (yellow), and the soft light eye-protecting base paper on the market is imported from Japan mainly and is manufactured by whole wood pulp, so that the use cost is high.

Disclosure of Invention

The technical problem that this application will be solved provides a two adhesive tape production systems.

In order to solve the technical problem, the application provides a double offset paper production system, which comprises a waste white paper pulping system, a softwood pulping system and a paper machine approach flow system, wherein the waste white paper pulping system sequentially comprises a rotary drum pulper for defibering waste white paper, a first impurity removal system for removing impurities, a first multi-disc for concentrating paper pulp, a first heat dispersion device, a second impurity removal system for further removing impurities and a pulp tower for storing pulp along a production flow; the softwood pulping system comprises a hydrapulper, a wood pulp disc mill and a wood pulp pool for storing wood pulp in sequence, and pulp in the pulp tower and the wood pulp in the wood pulp pool are conveyed to the paper machine approach system.

Preferably, the first impurity removing system comprises a high-concentration sand remover for removing heavy impurities, a coarse screen device for removing light impurities, an intermediate screen for removing large-size impurities, a first flotation tank for removing particle impurities and a fine screen for removing stickies in sequence along the direction of the production flow.

Preferably, the second impurity removing system comprises a second flotation tank, a second multi-disc and a second heat dispersion device in sequence along the direction of the production flow.

Preferably, the approach flow system of the paper machine is communicated with an auxiliary agent adding device, and the auxiliary agent adding device is used for adding calcium carbonate, dye and sizing agent in the pulp to the approach flow system of the paper machine.

Preferably, the production system further comprises a papermaking system, the papermaking system comprises a head box, a net part, a press part, a front drying part, a surface sizing device, a rear drying part and a calender, and the paper machine approach system conveys paper pulp to the head box.

Preferably, the papermaking system further comprises a winding machine, and the winding machine is arranged behind the calender and used for winding the double offset paper.

According to the double-sided offset paper production system, waste paper is used as a main raw material, and through a plurality of impurity removal processes, the color meets the index requirement, the manufactured soft-light eye-protecting natural-color double-sided offset paper has a uniform single fiber residue effect, and meanwhile, the paper is fine and soft and gives people a natural feeling; the invention does not need bleaching process, has low production cost and good printing effect, and can be used for manufacturing notebook paper.

Drawings

FIG. 1 is a schematic view of a two-ply paper production system of the present application.

Detailed Description

The present application is further described below in conjunction with the following figures and specific examples to enable those skilled in the art to better understand the present application and to practice it, but the examples are not intended to limit the present application.

As shown in the figure, the raw materials for manufacturing the soft-light eye-protecting natural-color double-sided offset paper are waste white paper and softwood bleaching mechanical pulp, wherein the mass of the waste white paper accounts for 80-85%; the mass of the softwood bleached mechanical pulp accounts for 15-20%.

The waste white paper passes through pulping equipment such as a rotary drum pulper, a high-concentration desander, a coarse screening device, an intermediate screen, a first flotation tank, a fine screen, a first multi-disc, a first heat dispersion device, a second flotation tank, a second multi-disc, a second heat dispersion device and the like. Wherein the drum pulper is used for defibering the waste paper, the defibering temperature is 50 ℃, and the defibering whiteness is required to reach 50-55% ISO; the high-concentration desander removes heavy impurities such as gravel, iron nails and the like through rotary centrifugation; the coarse screening system is mainly used for removing light impurities such as foam, plastic and the like; the middle sieve further reduces the aperture of the sieve plate and screens and removes impurities with larger size; the first flotation tank removes fine particles through a froth flotation process; the fine screen is used for further reducing the gaps of the screen plates and removing impurities such as stickies, the concentration of paper pulp is only 1-1.5%, multiple discs are needed for concentration in order to meet the requirement of a thermal dispersion process, the concentration of the paper pulp can reach 10% -15% through multiple discs, the thermal dispersion process is used for kneading dust and the stickies into particles invisible to naked eyes, and the dust and the impurity points on the paper surface of the finished paper are reduced. The second flotation cell and the second thermal dispersion device are further used for removing impurities. The treated slurry is sent to a slurry tower for storage. At the moment, the whiteness of the paper pulp can reach 65-70% ISO, the cleanliness of the finished waste paper is high, and the paper pulp does not pass through disc grinding in order to achieve the effect that the finished paper surface has single fiber residues.

The whiteness of the softwood bleaching mechanical pulp needs to reach 70-75% ISO, and the softwood bleaching mechanical pulp is fluffed by a wood pulp millstone and then sent to a wood pulp pool for storage. The bleached mechanical softwood pulp has a lower a value and a higher b value, and the consumption of dye can be reduced.

The paper machine approach flow system is the location for dilution, trash removal, and addition of paper making aids prior to entering the headbox. The main additive is calcium carbonate filler, and the addition amount of the calcium carbonate filler is 150-200 kg/ton paper, so that the smoothness of the paper surface is improved; the dye is mainly yellow dye, the addition amount of the yellow dye is 0.5-0.7 kg/ton paper, the internal sizing agent is mainly ASA sizing agent, the addition amount is 1.0-1.5 kg/ton paper, and the water resistance is endowed to the paper.

The pulp enters a conventional papermaking process after passing through a head box, and the conventional papermaking process comprises wire part dehydration, press part dehydration, front drying part dehydration and surface sizing, rear drying part dehydration and calendaring processes. Wherein the surface sizing is starch sizing, and the sizing amount is 0.8-1.0 g/(m)²Surface), further improving water resistance and surfaceSurface strength. The calender is preferably supercalendered, so that the paper surface is endowed with higher smoothness, the smoothness reaches 40-50s, and the printing and writing are facilitated.

The above-described embodiments are merely preferred embodiments for fully illustrating the present application, and the scope of the present application is not limited thereto. The equivalent substitution or change made by the person skilled in the art on the basis of the present application is within the protection scope of the present application. The protection scope of this application is subject to the claims.

Claims

1. The double-sided offset paper production system is characterized by comprising a waste white paper pulping system, a softwood pulping system and a paper machine approach flow system,

the waste white paper pulping system sequentially comprises a rotary drum pulper for defibering the waste white paper, a first impurity removal system for removing impurities, a first multi-disc for concentrating paper pulp, a first heat dispersion device, a second impurity removal system for further removing impurities and a pulp tower for storing pulp along a production flow;

the softwood pulping system comprises a hydrapulper, a wood pulp disc mill and a wood pulp pool for storing wood pulp in sequence, and pulp in the pulp tower and the wood pulp in the wood pulp pool are conveyed to the paper machine approach system.

2. The double-offset paper production system as claimed in claim 1, wherein the first impurity removing system comprises a high-consistency sand remover for removing heavy impurities, a coarse screening device for removing light impurities, an intermediate screen for removing large-size impurities, a first flotation tank for removing particulate impurities, and a fine screen for removing stickies in sequence along the production flow direction.

3. The double-offset paper production system as claimed in claim 2, wherein the second impurity removing system comprises a second flotation tank, a second multi-disc and a second heat dispersion device in sequence along the production flow direction.

4. The offset paper manufacturing system of claim 1, wherein the approach-paper machine system is in communication with an additive adding device for adding calcium carbonate, dye, and internal size to the approach-paper machine system.

5. The double-offset paper production system as claimed in claim 4, wherein said production system further comprises a paper making system, said paper making system comprising a headbox, a wire section, a press section, a pre-dryer section, a surface sizing device, a post-dryer section, a calender, said machine approach system delivering pulp to said headbox.

6. The offset paper production system as claimed in claim 5, wherein the papermaking system further comprises a winder, and the winder is arranged behind the calender for winding the offset paper.