CN1376826A - Light offset paper - Google Patents
Light offset paper Download PDFInfo
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- CN1376826A CN1376826A CN 02111581 CN02111581A CN1376826A CN 1376826 A CN1376826 A CN 1376826A CN 02111581 CN02111581 CN 02111581 CN 02111581 A CN02111581 A CN 02111581A CN 1376826 A CN1376826 A CN 1376826A
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- pulp
- paper
- groundwood
- light offset
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Abstract
A light offset paper features that its paper pulp is composed of mechanical wood pulp (70-80%) and ink-removed pulp (20-30%), and features that said wood pulp consists proportionally of coniferous wood and broad leaf wood. Its advantages are low tightness, light weight, low cost and high print quality.
Description
Technical field
The present invention relates to the papermaking class, particularly a kind of light offset paper.
Background technology
This century, the mankind were faced with resource scarcity, the day by day serious situation of environmental pollution day by day.The raw material that traditional mode of production adopted of offset paper are mainly derived from timber at present, therefore to consume a large amount of timber, and the wood pulp that uses of offset paper production chemical wood pulp normally, promptly through log remove the peel, chip, operations such as boiling, washing, bleaching, making beating make, in pulping process, can produce a large amount of pollutants, the waste paper enormous amount of all trades and professions generation simultaneously, above-mentioned situation is apparent to the waste and the environment damage of resource.The development of kownledge economy simultaneously, people are to knowledge craving for more, especially vast student, the books reading matter in the school bag is more and more, and the weight of school bag is also more and more heavier, and people are expecting to have a kind of light-duty books to appear on the market.
Summary of the invention
The objective of the invention is provides a kind of light offset paper according to above-mentioned the deficiencies in the prior art part, and the characteristics of this light offset paper are the low and bulk height, in light weight of tightness, i.e. the present invention quantitatively is 80g/mm being equivalent to traditional product
2During the thickness of paper, it quantitatively has only 60g/mm
2, having reduced paper grade (stock) timber significantly, cost is lower.
The object of the invention realizes being finished by following technical scheme:
When the present invention joined slurry, the chemical addition agent of interpolation was: rosin 1.3%, and lead sulfate 7%, starch 1.1%, wet strength agent 0.2%, all the other are the main component paper pulp of raw material.
The component of main component paper pulp is that groundwood pulp accounts for 70-80%, and the deinking slurry accounts for 20-30%.Wherein groundwood pulp is made up of a certain proportion of softwood and broadleaf, and this ratio can determine according to actual needs, and the deinking slurry in the component also can adopt other slurries kind to substitute according to actual conditions simultaneously, and this be the understandings easily of persons skilled in the art institute.
Production method of the present invention is:
The preparation of groundwood pulp of the present invention is commercially available groundwood pulp to be carried out wood pulp through equipment such as pulper, disassociation machine, double plate mills discongest, discongest, cut off, divide operations such as silk, fiber broomization, just can obtain the required groundwood pulp of pulping; The preparation of deinking slurry is that waste paper is obtained required deinking slurry through pulper, the floating operations such as deinking, scummer, pressurized screen, garden net washing, double plate mill of making.Pulp quality: groundwood pulp, i.e. degree of separating 45-50 ° of SR, weight in wet base 3.4-3.8 gram; Deinking slurry, i.e. degree of separating 55-60 ° of SR, weight in wet base 4.5-5.0 gram.
With above-mentioned material according to rosin 1.3%, lead sulfate 7%, starch 1.1%, wet strength agent 0.2%, all the other join slurry for the proportioning of paper pulp, again with paper pulp through lightweight scummer, selectifier, online manufacture paper with pulp, the whole operation such as cut paper of selecting gets product.
Groundwood pulp, the preparation technology of deinking slurry and the papermaking process of paper are known technology in the above technology, do not repeat them here.
Advantage of the present invention is, quantitatively light, paper bulk height, tightness are low, and whiteness is moderate, and the smooth appearance cleaning, very property is good, and it is good to be easy to printing and quality, and low cost of manufacture is easy to environmental protection.
It below is the technical indicator that the present invention reaches
| Project | Unit | Test result |
| Quantitatively | ????g/mm 2 | ????60.1 |
| Thickness | ????Mm | ????0.105 |
| Tightness | ????g/cm 3 | ????0.572 |
| Whiteness | ????％ | ????71.0 |
| Fracture length | ????M | ????3480 |
| Folding strength | Inferior | ????20 |
| The surface absorbs weight | ????g/m 2 | ????3.2 |
| Ash content | ????％ | ????7.5 |
| Moisture | ????％ | ????6.0 |
Concrete technical scheme
By the following examples feature of the present invention and other correlated characteristic are described in further detail, so that technical staff's of the same trade understanding:
When the present invention joins slurry, in paper pulp, add rosin 1.3%, lead sulfate 7%, starch 1.1%, wet strength agent 0.2%.Wherein the component of paper pulp is that groundwood pulp accounts for 80%, and the deinking slurry accounts for 20%.The ratio of softwood and broadleaf is 85: 15 in the groundwood pulp.
Production method of the present invention is:
The preparation of groundwood pulp of the present invention is commercially available groundwood pulp to be carried out wood pulp through equipment such as pulper, disassociation machine, double plate mills discongest, discongest, cut off, divide operations such as silk, fiber broomization, just can obtain the required groundwood pulp of pulping; The preparation of deinking slurry is that waste paper is obtained required deinking slurry through pulper, the floating operations such as deinking, scummer, pressurized screen, garden net washing, double plate mill of making.Pulp quality: groundwood pulp: promptly degree of separating 45-50 ° of SR, weight in wet base 3.4-3.8 restrain; The deinking slurry: promptly degree of separating 55-60 ° of SR, weight in wet base 4.5-5.0 restrain.
Above-mentioned material is pressed rosin 1.3%, lead sulfate 7%, starch 1.1%, wet strength agent 0.2%, all the other join slurry for the proportioning of paper pulp, and the slurry that will prepare is manufactured paper with pulp, is put in order operations such as selecting cut paper through lightweight scummer, selectifier, online and gets product again.
Groundwood pulp, the preparation technology of deinking slurry and the papermaking process of paper are known technology in the above technology, do not repeat them here.
Though below design and embodiment according to the object of the invention are described in detail, but those of ordinary skills can recognize, under the precondition that does not break away from the claim limited range, still can make various improvement and conversion to the present invention, other slurries kind of alternative deinking slurry or the like is perhaps adopted in for example conversion of groundwood pulp kind.
Claims (3)
1. light offset paper, form by paper pulp and chemical addition agent, it is characterized in that described paper pulp is made up of groundwood pulp and pulp from decoloured waste paper, its proportioning is that groundwood pulp accounts for 70-80%, pulp from decoloured waste paper accounts for 20-30%, and wherein groundwood pulp is made up of a certain proportion of softwood and broadleaf.
2. a kind of light offset paper according to claim 1 is characterized in that the ratio of softwood and broadleaf is 85: 15 in the described groundwood pulp.
3. a kind of light offset paper according to claim 1 is characterized in that described pulp content is that groundwood pulp accounts for 80%, pulp from decoloured waste paper accounts for 20%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB021115818A CN1186496C (en) | 2002-05-08 | 2002-05-08 | Light offset paper |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB021115818A CN1186496C (en) | 2002-05-08 | 2002-05-08 | Light offset paper |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1376826A true CN1376826A (en) | 2002-10-30 |
| CN1186496C CN1186496C (en) | 2005-01-26 |
Family
ID=4741649
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB021115818A Expired - Fee Related CN1186496C (en) | 2002-05-08 | 2002-05-08 | Light offset paper |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1186496C (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102644215A (en) * | 2012-04-12 | 2012-08-22 | 陕西科技大学 | Preparation method of offset paper |
| CN106835796A (en) * | 2017-04-01 | 2017-06-13 | 安徽山鹰纸业股份有限公司 | Using the method for regenerated fiber production technology product processing paper |
-
2002
- 2002-05-08 CN CNB021115818A patent/CN1186496C/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102644215A (en) * | 2012-04-12 | 2012-08-22 | 陕西科技大学 | Preparation method of offset paper |
| CN102644215B (en) * | 2012-04-12 | 2014-07-02 | 陕西科技大学 | Preparation method of offset paper |
| CN106835796A (en) * | 2017-04-01 | 2017-06-13 | 安徽山鹰纸业股份有限公司 | Using the method for regenerated fiber production technology product processing paper |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1186496C (en) | 2005-01-26 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20050126 Termination date: 20170508 |