CN103469694B - Paper making equipment and papermaking process - Google Patents
Paper making equipment and papermaking process Download PDFInfo
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- CN103469694B CN103469694B CN201310391736.1A CN201310391736A CN103469694B CN 103469694 B CN103469694 B CN 103469694B CN 201310391736 A CN201310391736 A CN 201310391736A CN 103469694 B CN103469694 B CN 103469694B
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Abstract
A kind of paper, including basic unit and the patterned layer that is combined with basic unit, described patterned layer occupies the local area of basic unit, described basic unit is formed by the first slurry, described patterned layer is formed by the second slurry, the first slurry has difference with the retention of whiteness of the second slurry, so that producing aberration between described basic unit and patterned layer and making the pattern of patterned layer be presented in basic unit.The present invention utilizes the feature of the easy brightness reversion of slurry of retention of whiteness difference, the patterned layer that the slurry that this kind of molding is differed from by retention of whiteness in the basic unit formed by the slurry that retention of whiteness is good is formed, make patterned layer have the whiteness different from basic unit thus show this kind of pattern form, to play effect attractive in appearance, thus the slurry of the retention of whiteness differences such as high yield pulp can be made full use of, and without using especially the process technique of suppression brightness reversion, make consumer will not produce the understanding that paper wears and the wish with consumption simultaneously.The present invention also provides for a kind of paper making equipment and papermaking process.
Description
Technical field
The present invention relates to a kind of paper, particularly to a kind of slurry making full use of retention of whiteness difference
The paper manufactured and the paper making equipment of this kind of paper of manufacturing paper with pulp and papermaking process.
Background technology
High yield pulp generally refers to wood raw material, yield can be utilized largely to may be up to
The slurry of more than 90%.Owing to taking full advantage of raw material, high yield pulp answering in paper manufactures
With more and more universal.But the inherent shortcoming that high yield pulp has, i.e. high yield pulp contains
The quick brightness reversion of the paper manufactured paper with pulp that causes of a large amount of lignins.Due to the brightness reversion of paper, cause
Paper White Degree reduces, and makes people produce the sensation of paper " old " and lose the wish of consumption.
Industry typically uses two kinds of methods to tackle the Paper White Degree that high yield pulp is manufactured paper with pulp at present
The problem of poor stability (brightness reversion).The first adds yellowing inhibition agent in the slurry, and it two is
Filler or other materials is used to cover at paper surface.But currently used yellowing inhibition
Agent can only the generation of portion retards paper from yellowing, namely can not thoroughly solve asking of paper from yellowing
Topic, but also improve the production cost of paper.And use the materials such as use filler to cover
Method, can only apply in specific paper kind, range is limited.
Summary of the invention
In view of this, it is desirable to provide a kind of make full use of retention of whiteness difference slurry system
The paper become, and relevant paper making equipment and papermaking process, it is steady that this kind of paper can make full use of whiteness
The characteristic of the easy brightness reversion of paper that the slurry of qualitative difference is made, and make consumer have the wish of consumption.
A kind of paper, including basic unit and the patterned layer that is combined with basic unit, described patterned layer occupies base
The local area of layer, described basic unit is formed by the first slurry, and described patterned layer is starched by the second
Material is formed, and the retention of whiteness of the first slurry has difference with the retention of whiteness of the second slurry
Different, so that producing aberration between described basic unit and patterned layer and making the pattern of patterned layer in basic unit
On presented.
A kind of paper making equipment for manufacturing above-mentioned paper, including forming part, wet transfer portion and be dried
Portion, described forming part includes basic unit's forming section and patterned layer laying portion, described basic unit forming section
Including flow box and the fabric of correspondence, described flow box is used for the first slurry at fabric
Being configured to basic unit, described patterned layer laying portion includes that at least one cloth spills head, described at least one
Cloth spills head for the second slurry is formed in basic unit the pattern of the local area occupying basic unit
Layer, the retention of whiteness of the first slurry described has difference with the retention of whiteness of the second slurry
Different, described wet transfer portion is for being transferred to be dried by the above-mentioned basic unit's paper web being formed with patterned layer
Portion, described drying section is for being dried this paper web.
A kind of papermaking process utilizing above-mentioned paper making equipment to carry out papermaking, step includes:
The first slurry is utilized to manufacture paper with pulp molding basic unit in basic unit's forming part；
Utilize the second slurry to form patterned layer at basic unit's local location in patterned layer laying portion, and
This is formed with basic unit's web transfers of patterned layer to wet transfer portion, the first slurry described white
Degree stability has difference with the retention of whiteness of the second slurry；And
This paper web is transferred to drying section from wet transfer portion and paper web is dried.
The present invention utilizes retention of whiteness to have discrepant two kinds of slurries and forms basic unit and figure respectively
Pattern layer, makes to occupy the patterned layer of basic unit's local area because the difference of retention of whiteness is by correspondence
Pattern is apparent in basic unit, to play effect attractive in appearance, thus can make full use of retention of whiteness
The slurry of difference, and make consumer will not produce the understanding that paper wears.Furthermore, the present invention is profit
The whiteness difference phenomenon presented after slurry brightness reversion by retention of whiteness difference, therefore in papermaking
During, it is not necessary to use for suppressing the specific aim of this kind of slurry brightness reversion to process technique, can be relative
Reduce the tradition technique of papermaking, cost requirement.
With reference to the accompanying drawings, the invention will be further described in conjunction with specific embodiments.
Accompanying drawing explanation
Fig. 1 is the cross section structure schematic diagram of the paper of one embodiment of the invention.
Fig. 2 is the planar representation of the paper in Fig. 1.
Fig. 3 is the structural representation of the paper making equipment of one embodiment of the invention.
Fig. 4 is the view utilizing paper making equipment of the present invention to manufacture paper.
Fig. 5 and Fig. 6 is the structural representation of the paper making equipment of other embodiments of the invention.
Main element symbol description
| Basic unit | 10 |
| Patterned layer | 11 |
| Forming part | 20、21、22 |
| Flow box | 201、211、221 |
| Fabric | 202、212、214、222、224 |
| Cloth spills head | 203、213、223 |
| Roll body | 215、225 |
| Wet transfer portion | 30 |
| Drying section | 40 |
Following detailed description of the invention will further illustrate the present invention in conjunction with above-mentioned accompanying drawing.
Detailed description of the invention
As depicted in figs. 1 and 2, a kind of paper that one embodiment of the invention provides, including basic unit
10 and the patterned layer 11 that is combined with basic unit 10.
Described basic unit 10 is formed by the first slurry, and described patterned layer 11 is by the second slurry shape
Become.The retention of whiteness of the first slurry is better than the retention of whiteness of the second slurry.Such as,
In one embodiment, the first slurry can be chemical pulp, and the second slurry can be high yield pulp1
Slurry.
Chemical pulp refers to employingization during be made up slurry of paper making raw material such as timber etc.
Method remove from plant fiber material major part non-cellulose components and prepared paper pulp.By
Non-cellulose components in plant is removed significantly, plant plant during slurry
Raw material loss is more, namely so-called yield is relatively low.Such as, some technique gained is used
Chemical pulp, the wood conversion of 45-50% can only be slurry by its manufacture process.Chemical pulp is made
Its retention of whiteness of paper become is preferable, will not produce chromatic aberration because of reasons such as illumination bigger
Problem.
Relative, high yield pulp mainly uses the method for physics to come from paper making raw material timber and separates
Fiber, therefore can farthest utilize paper making raw material.The production process of high yield pulp can be by
The raw material of more than 65% is converted into slurry, it might even be possible to reach more than 90%.High yield pulp is because of relatively
The good lignin preserved in raw material, and lignin easy brightness reversion under the environment such as illumination, therefore
For the paper manufactured paper with pulp by high yield pulp is compared to the paper manufactured paper with pulp by chemical pulp, its whiteness
Less stable.
The retention of whiteness utilizing described patterned layer 11 in the present invention is more stable than the whiteness of basic unit 10
Property poor, so that producing aberration make patterned layer 11 between described basic unit 10 and patterned layer 11
Pattern presented in basic unit 10.
Described basic unit 10 and patterned layer 11 are entangled by during sizing material forming, each institute is fibrous
Twine consolidation and combine.This process system is because of the drainage of fiber, again in forming process
Arrangement and complete, therefore basic unit 10 and patterned layer 11 essence can regard as one indivisible whole
Use the means formation such as gluing, mechanical press after body, with Web forming again has multi-layer web
Paper product different.It is to be appreciated that according to the actual needs, it is also possible to again by gluing,
The means such as mechanical press are by the list combining basic unit 10 and patterned layer 11 of multiple present invention of having
Layer paper combines.
In order to not affect the combination of patterned layer 11 and basic unit 10 in forming process, and combine
After do not affect follow-up wet transfer, the production process such as be dried, the thickness of patterned layer 11 is preferably controlled
It is made as the 1/20～1/2 of basic unit 10 thickness.
Patterned layer 11 is placed only on basic unit 10 surface of part, rather than basic unit is completely covered
10.Described patterned layer 11 occupies the local in basic unit 10 horizontal (crossdirection, CD)
Area.It is to say, the area that the area that patterned layer 11 occupies occupies less than basic unit 10.As
In embodiment shown in Fig. 2, described patterned layer 11 forms the pattern of linear, in basic unit 10
Longitudinal direction on, namely on paper machine direction (machine direction, MD), there is seriality,
But the most spaced in basic unit 10 of this patterned layer 11, namely this patterned layer 11 exists
Same lateral position only occupies the local area of basic unit 10.
In some other embodiments, for considering of the factor such as attractive in appearance, this patterned layer 11
Also the pattern of other shapes can be formed.Therefore patterned layer 11 can basic unit 10 transversely or
The vertical continuous pattern that is upwardly formed, but no matter how the pattern of patterned layer 11 changes, patterned layer
11 local area finally occupying basic unit 10, so that the pattern that patterned layer 11 has can
Can be presented in basic unit 10 because of the difference of retention of whiteness.
Further, described patterned layer 11 can include the first patterned layer and the second patterned layer,
Described first patterned layer uses different slurries to be formed with the second patterned layer, thus at the first pattern
Aberration is produced between layer and the second patterned layer.First patterned layer can be divided parallel with the second patterned layer
Cloth is in basic unit 10, to form the patterned layer 11 with various aberration.Such as, institute in Fig. 2
In the structure shown, the pattern of part striated can be the first patterned layer, additionally part striated
Pattern can be the second patterned layer.It addition, also can be formed in basic unit 10 it in the first patterned layer
After, then in the first patterned layer, form the second patterned layer, to constitute the pattern with hierarchical structure
Layer 11.
The present invention makes full use of the difference of high yield pulp and the retention of whiteness of chemical pulp, and
By the distribution pattern of the patterned layer 11 that default high yield pulp is formed so that high yield pulp because of
Easily brightness reversion and in basic unit 10, show the pattern corresponding to patterned layer 11, must be able to starch high
Inferior position change into advantage, thus avoid the overall brightness reversion of paper, improve the effect attractive in appearance of paper
Really, thus counteract consumer's negative impression to this kind of paper.
Based on spirit of the invention, the slurry forming described basic unit 10 and patterned layer 11 does not limit
In certain high yield pulp specific or chemical pulp, as long as patterned layer 11 is because of its retention of whiteness
Differ from and cause the generation of aberration and the pattern of correspondence can be shown in basic unit 10.This
The bright easy yellowing property substantially utilizing high yield pulp, the therefore retention of whiteness of patterned layer 11
Difference mainly have employed the high yield pulp that ratio is more, and the retention of whiteness of basic unit 10 is relative
The most mainly have employed the relatively small number of high yield pulp of ratio for opposed patterns layer 11.By
In this one embodiment of the invention, described basic unit 10 is formed by chemical pulp, described patterned layer 11
Formed by high yield pulp, but do not limited by this embodiment.
Such as, in certain embodiments, described basic unit 10 is formed by chemical pulp, described pattern
Layer 11 is formed by the mixed slurry of chemical pulp and high yield pulp.Preferably, patterned layer 11 is for changing
Learning slurry when being formed with the mixing of high yield pulp slurry, wherein high yield pulp accounts for mixing slurry mass ratio and is more than
Equal to 20%, be more highly preferred to for more than 50%.
The most such as, in certain embodiments, described basic unit 10 is by chemical pulp and high yield pulp
Mixed slurry is formed, and described patterned layer 11 is formed by high yield pulp.Preferably, basic unit 10
When being formed for the mixing slurry of chemical pulp and high yield pulp, the mass ratio that high yield pulp accounts for mixing slurry is little
In equal to 50%, more preferably 10%-30%.
The most such as, in certain embodiments, described basic unit 10 is by chemical pulp and high yield pulp
Mixed slurry is formed, and described patterned layer 11 is also by the mixed slurry shape of chemical pulp and high yield pulp
Become, but the high yield pulp of patterned layer 11 uses ratio more.High in patterned layer 11
Under rate slurry use ratio this premise more, in preferred basic unit 10, high yield pulp accounts for mixing slurry
Mass ratio less than or equal to 50%, and in patterned layer 11, high yield pulp accounts for the mass ratio of mixing slurry
More than or equal to 30%.It is furthermore preferred that for making basic unit 10 and patterned layer 11 present more obvious color
Difference, in patterned layer 11, the accounting of high yield pulp should be at least than the accounting of high yield pulp in basic unit 10
High by more than 20%.Such as, in certain embodiments, in basic unit 10, high yield pulp accounts for mixing slurry
Mass ratio be 10%-30%, and in patterned layer 11 high yield pulp account for mixing slurry mass ratio big
In equal to 50%.
It is to be appreciated that the retention of whiteness that the present invention makes full use of high yield pulp is relatively poor
Characteristic so that final paper has the patterned layer 11 made containing more high yield pulp, because of white
Spend poor and relative showing in the basic unit 10 of paper lucidly is distributed corresponding with patterned layer 11
Pattern, therefore the paper of the present invention is in the fabrication process without being used for suppressing high yield pulp to return
Yellow treatment measures.
Additionally, above-mentioned all embodiments are all will to have retention of whiteness preferably the first slurry
Form described basic unit 10, the second slurry having retention of whiteness poor is formed described figure
Pattern layer 11.It is appreciated that on the paper formed, as long as basic unit 10 has white with patterned layer 11
The difference of degree stability, so that it may make to present between basic unit 10 and patterned layer 11 aberration, and make figure
Pattern layer 11 shows in the basic unit 10 of paper and is distributed corresponding pattern with patterned layer 11.Also
That is, used in the various embodiments described above to the first slurry can be used for formed patterned layer
11, and used in the various embodiments described above to the second slurry can be used for formed basic unit 10.
The present invention furthermore provides the paper making equipment for manufacturing above-mentioned paper.
As it is shown on figure 3, one embodiment of the invention provide paper making equipment include forming part 20,
Wet transfer portion 30 and drying section 40.Forming part 20 is for by paper making raw material sizing material forming being
Paper web, wet transfer portion 30 is for being transferred to drying section by the paper web of forming part 20 gained molding
40 pairs of paper webs are dried.
Described forming part 20 includes basic unit's forming section and patterned layer laying portion.Described basic unit becomes
Shape portion is for being configured to basic unit by the first slurry.Described patterned layer laying portion is in molding
The second slurry is laid to patterned layer by the localized positions of basic unit.The whiteness of the first slurry is steady
The qualitative retention of whiteness than the second slurry is good.Understandably, it is also possible to be the first slurry
The retention of whiteness of material is poorer than the retention of whiteness of the second slurry.Hereafter to this paper making equipment
In explanation, the first slurry is as a example by the fibrous suspension containing chemical pulp, the second slurry
It is as a example by the fibrous suspension containing high yield pulp, it is possible to understand that ground, the first slurry and
Two kinds of slurries should not be limited by this specific embodiment, the various use hereinbefore mentioned
Slurry in formation basic unit 10 and patterned layer 11 is all feasible.
In embodiment shown in Fig. 3, basic unit's forming section includes flow box 201 and corresponding fabric
202.Flow box 201 receive after scattered slurry, the operation such as with slurry process containing chemical pulp
Fibrous suspension, and the injection fibrous suspension containing chemical pulp on the fabric 202 of movement,
Fibrous suspension is drainage on fabric 202, is configured to the basic unit 10 of hygrometric state.Flow box 201
Along the whole horizontal expansion of fabric 202, for transversely spraying slurry the whole of fabric 202,
Thus formed basic with fabric 202 with wide basic unit 10.
Described patterned layer laying portion includes that at least one cloth spills 203, described cloth spill 203 with
Flow box 201 is provided separately, and is arranged on the downstream of flow box 201.Described cloth spills 203
Receive the fibrous suspension containing high yield pulp after scattered slurry, the operation such as with slurry process, and
On basic unit 10 breadth in hygrometric state on fabric 202, the injection fiber containing high yield pulp hangs
Supernatant liquid, fibrous suspension is drainage on basic unit 10 breadth, is configured to patterned layer 11, so that
Patterned layer 11 is laid in basic unit 10.Patterned layer 11 and basic unit 10 in forming part 20 to wet
Constantly it is dehydrated during transfer portion 30 so that the fiber in two paper web layers mutually tangles knot
Merge and ultimately form an indivisible monolayer paper web.This process combined is certainly also wet
The transmittance process of transfer portion 30 is carried out, it is considered that, before arriving drying section 40, should
Patterned layer 11 and basic unit 10 have preferably combination, and can regard an overall paper web as.
When cloth spills 203 for time multiple, cloth can be spilt 203 and be optionally disposed on and knit
The same lateral position of thing 202, for the partial lateral at fabric 202, namely basic unit
Spray slurry in the partial lateral of 10, thus in basic unit 10, form patterned layer 11.Can manage
Xie Di, it is also possible to multiple cloth are spilt the 203 non-same lateral position being arranged on fabric 202,
For forming the patterned layer 11 with hierarchical structure.
Be arranged in the partial lateral of fabric 202 it should be understood that though cloth spills 203, a but institute
State cloth to spill the scopes of 203 distributions and can extend to the whole width of basic unit's paper web that flow box 201 is formed
Degree direction, namely substantially extend to the width of whole fabric 202, to select part cloth to spill flexibly
203, spill containing high yield pulp with any local location cloth transversely in basic unit 10
Fibrous suspension, and in basic unit 10, form patterned layer 11.As shown in Figure 4, described figure
Pattern layer laying portion has the spaced arrangement of horizontal direction of the basic unit 10 along paper web and spills head
203, for convenience of describing, it is a, b, c, d, e, f that these cloth spill 203 number consecutively,
G, h, i ..., above-mentioned at least one cloth spill 203 continuously to basic unit 10 cloth spill containing
The fibrous suspension of high yield pulp, can form the linearity parallel with basic unit 10 direction of motion
Pattern.Numbering b shown in Fig. 4, g cloth spill 203 unlatching, thus are formed in basic unit 10
It is rendered as the patterned layer 11 of two linearities.
The explanation of above-mentioned combination Fig. 4 only illustrates the patterned layer 11 formed in the present invention wherein
A kind of concrete pattern, it is possible to understand that ground, as required, one or more cloth spills head
203 can transversely moving at fabric 202, preferably to form various patterned layer 11.Logical
Cross the mobile cloth that arranges and spill 203, make cloth spill 203 and hang at the injection fiber containing high yield pulp
During supernatant liquid, make the transverse shifting of friction speed or track, in combination with the longitudinal direction of fabric 202
Mobile, the pattern of correspondence can be formed on fabric 202.Patterned layer according to required formation
The pattern of 11, optional arranges the mode that cloth spills quantity, position and/or the movement of 203.
In certain embodiments, described patterned layer laying portion also can have that spill 203 to cloth corresponding
Fabric.Such as, shown in Fig. 5, the forming part 21 in an embodiment, its basic unit's forming section
Including flow box 211 and corresponding fabric 212, its patterned layer laying portion includes that cloth spills 213
And the fabric 214 of correspondence.Fabric 212 contacts at a roll body 215 with fabric 214.Net
The fibrous suspension of front case 211 injection is shaped to the basic unit 10 of hygrometric state at roll body 215, and
It is transferred on fabric 214, and cloth spills 213 and sprays corresponding fibrous suspension to knitting subsequently
Patterned layer 11 is formed in basic unit 10 on thing 214.
In certain embodiments, described basic unit forming section can be relative with the fabric in patterned layer laying portion
Independent, after two fabrics are formed basic unit 10 and the patterned layer 11 of hygrometric state respectively, then by basic unit
10 and patterned layer 11 be transferred on same fabric to carry out dehydration combine, drying and other steps.Such as,
Shown in Fig. 6, the forming part 22 in an embodiment, its basic unit's forming section includes flow box 221
With corresponding fabric 222, its patterned layer laying portion includes that cloth spills 223 and the fabric of correspondence
224.Fabric 222 contacts at a roll body 225 with fabric 224.Unlike Fig. 5,
The fibrous suspension of flow box 221 injection is shaped to the basic unit 10 of hygrometric state on fabric 222,
And cloth spills a fibrous suspension of 223 injections and forms the patterned layer 11 of hygrometric state on fabric 224,
And patterned layer 11 is transferred in the basic unit 10 of fabric 222 at roll body 225, then moves to
Constantly it is dehydrated during wet transfer portion 30 and then combines.It is to be appreciated that can be in transfer
Place arranges secondary transfer equipment such as vacuum adsorption box etc. commonly used in the trade, is beneficial to patterned layer
11 are transferred in basic unit 10, and be beneficial to combine after patterned layer 11 and basic unit 10 be transferred to
In wet transfer portion 30.Due to be on different fabrics first distinguish molding, then carry out transfer knot
Close, the fibrous suspension of patterned layer 11 can be avoided the formation of and be sprayed directly on basic unit 10 and cause basic unit
The risk of the destruction of 10.
It addition, described patterned layer laying portion can also include assisting cloth to spill head, at basic unit's paper
Lay on width be different from described cloth spill the slurry of 203,213,223 with formed be different from described
Cloth spills 203,213, a 223 patterned layer paper web formed.These auxiliary cloth spill head and can divide
Cloth spills the downstream of head at cloth, namely is distributed in the different lateral position of fabric.In addition, it is possible to
To spill 203,213,223 for spraying different slurries by controlling the cloth of a portion,
And make the cloth of part spill 203,213,223 and play auxiliary cloth and spill the effect of head.Such as,
These auxiliary cloth spill head and may be used for re-laying one described being equipped with above patterned layer
Layer pattern layer, for the patterned layer 11 of cambium layer aggregated(particle) structure.The most such as, as shown in Figure 4,
Can be by numbered b, the cloth of d spills 203 and is set to assist cloth to spill head, is used for spraying difference
Spill, in other cloth, the fibrous suspension that head is sprayed, thus in basic unit 10, form parallel distributed
The patterned layer 11 with various aberration.
Wet transfer portion 30 in the present invention includes the delivery roll of a system and around the envelope of delivery roll
Loop-like fabric, drying section 40 is as a example by cylinder dried, it is shown that drying cylinder and wet transfer portion
The fabric of 30 connects.Wet transfer portion 30 will combine after basic unit 10 and patterned layer 11 be transferred to
Make on drying section 40 to be further dried.It is appreciated that drying section 40 is not limited to this kind and does
Dry, in prior art, other drying mode also can be used in the present invention.
The present invention also correspondence provides a kind of papermaking process being carried out papermaking by above-mentioned paper making equipment.This
Its step of papermaking process that invention provides includes:
The first slurry is utilized to manufacture paper with pulp molding basic unit in basic unit's forming part；
Utilize the second slurry to form patterned layer at basic unit's local location in patterned layer laying portion, and
This is formed with basic unit's web transfers of patterned layer to wet transfer portion, the first slurry described white
Degree stability has difference with the retention of whiteness of the second slurry；And
This paper web is transferred to drying section from wet transfer portion and paper web is dried.
Hereafter in the explanation of this papermaking process, the first slurry is with the fiber containing chemical pulp
As a example by suspension, the second slurry is as a example by the fibrous suspension containing high yield pulp, permissible
Understanding ground, the first slurry and the second slurry should not be limited by this specific embodiment
System, the various slurries for forming basic unit 10 and patterned layer 11 hereinbefore mentioned are all can
Row.
Owing to patterned layer 11 is that part is laid in basic unit 10, and thickness is thin, it is possible to understand that
The scope more general paper copy paper mistake of the fibre concentration of the suspension containing high yield pulp laid
The scope of the fibrous suspension used in journey is wider, preferably 0.01%～20%, if full
The foot suspension containing high yield pulp is routed in basic unit 10, can form fiber thin after drainage
Layer.
When utilizing patterned layer laying portion that the slurry containing high yield pulp is formed patterned layer 11, can
So that corresponding slurry is injected directly in the basic unit 10 of molding, can also be by corresponding slurry
Be injected on the fabric of correspondence formed carry out patterned layer 11 again after patterned layer 11 shifting with base
Layer 10 combines.It is to be appreciated that owing to patterned layer 11 and basic unit 10 are hygrometric state, its knot
Conjunction be due to patterned layer 11 and basic unit 10 drainage, be dried during its fiber rearrangement
And occur tangle consolidation.
Owing to basic unit 10 wet web is in the case of undried, its intensity is the lowest, Ke Yili
The described cloth solved spills head and should use up when directly containing the suspension of high yield pulp toward injection in basic unit 10
Possible close basic unit 10, the speed of the injection of the suspension containing high yield pulp simultaneously and basic unit
10 speed run are identical, to reduce high yield pulp as far as possible when being routed on wet web,
Impact to wet web, prevents from causing the product of the paper defects such as basic unit 10 broken hole because laying high yield pulp
Raw.
Further, described cloth spills head directly toward injection hanging containing high yield pulp in basic unit 10
During supernatant liquid, spill the fibrous suspension containing high yield pulp for continuous cloth as far as possible, prevent pulse feature from starching
When material is routed to basic unit 10, basic unit 10 is caused damage.In certain embodiments, spill at cloth
When head is whitewashed continuously, the patterned layer formed on basic unit's paper web is rendered as continuous linear shape or band
Shape.
Further, the papermaking process that the present invention provides also comprises the steps: this paper web of illumination
And make this basic unit produce aberration with patterned layer, so that patterned layer presents correspondence in basic unit
Pattern.It should be understood that due to when paper web is dried and during following process, also
Can accept natural lighting, therefore this step not necessarily needs to process the most targetedly.But
It is, as an optional embodiment, the paper web after molding can be carried out ultraviolet light treatment with irradiation,
So that high yield pulp accelerates brightness reversion, pattern is made quickly to manifest.For example, it is possible in dry process
Operating paper web is irradiated by the corresponding illumination apparatus of middle employing.
The present invention utilizes the spy of slurry (such as high yield pulp) the easily brightness reversion of retention of whiteness difference
Property, the brightness reversion region of regularity is set, makes brightness reversion region present pattern, it is to avoid people are because of paper
Brightness reversion and result in paper for the misunderstanding of " old " paper, the use of high yield pulp can be expanded
Scope, solves the high yield pulp Utilizing question of long-standing problem people.
Claims (9)
1. a papermaking process, step includes:
The first slurry is utilized to manufacture paper with pulp molding basic unit in basic unit's forming part；
Utilize the second slurry to form patterned layer at basic unit's local location in patterned layer laying portion, and
This is formed with basic unit's web transfers of patterned layer to wet transfer portion, the first slurry described white
Between degree stability and the retention of whiteness of the second slurry, there is difference；And
This paper web is transferred to drying section from wet transfer portion and paper web is dried.
2. papermaking process as claimed in claim 1, it is characterised in that: also include this paper of illumination
Fu Bingshigai basic unit produces aberration with patterned layer, so that patterned layer presents correspondence in basic unit
The step of pattern, above-mentioned illumination be the natural lighting that receives during processing of paper web or
Paper web after molding is carried out ultraviolet light treatment with irradiation.
3. papermaking process as claimed in claim 1, it is characterised in that: patterned layer laying portion sprays
The speed penetrating slurry is identical with the speed that basic unit runs.
4. papermaking process as claimed in claim 1, it is characterised in that: described basic unit is by chemistry
Slurry is formed, and described patterned layer is formed by high yield pulp；Or described basic unit is formed by chemical pulp,
Described patterned layer is formed by the mixed slurry of chemical pulp and high yield pulp；Or described basic unit is by changing
The mixed slurry learning slurry and high yield pulp is formed, and described patterned layer is formed by high yield pulp；Or
Described basic unit and patterned layer are formed by the mixed slurry of chemical pulp and high yield pulp.
5. papermaking process as claimed in claim 1, it is characterised in that: utilize patterned layer to lay
When portion forms patterned layer, the second slurry is injected directly in the basic unit of molding so that being formed
Patterned layer is combined with basic unit, or independently formed by the second slurry again will figure after patterned layer
Pattern layer carries out shifting to be combined with basic unit.
6. one kind uses in claim 1-5 item the papermaking process described in any one to carry out papermaking
Paper making equipment, including forming part, wet transfer portion and drying section, it is characterised in that: described one-tenth
Type portion includes basic unit's forming section and patterned layer laying portion, and described basic unit forming section includes flow box
And the fabric of correspondence, described flow box is for being configured to base by the first slurry on fabric
Layer, described patterned layer laying portion includes that at least one cloth spills head, and at least one described cloth spills head and uses
In the second slurry being formed in basic unit the patterned layer of the local area occupying basic unit, described
Between retention of whiteness and the retention of whiteness of the second slurry of a kind of slurry, there is difference, institute
State wet transfer portion for the above-mentioned basic unit's paper web being formed with patterned layer is transferred to drying section, described
Drying section is for being dried this paper web.
7. paper making equipment as claimed in claim 6, it is characterised in that: described patterned layer is laid
The described cloth of at least one of portion spills head and is arranged on the downstream of flow box, and for by the second slurry
It is sprayed directly in basic unit to form patterned layer.
8. paper making equipment as claimed in claim 6, it is characterised in that: described patterned layer is laid
Portion has the fabric of corresponding fabric, described patterned layer laying portion and basic unit's forming part at a roll body
Place connects, and described patterned layer laying portion forms patterned layer on its corresponding fabric, and passes through institute
State roll body patterned layer be transferred on the fabric at basic unit place and make patterned layer be combined with basic unit.
9. paper making equipment as claimed in claim 6, it is characterised in that: described patterned layer is laid
Portion also includes assisting cloth to spill head, for injection be different from least one described cloth spill the slurry of head with
Formation is different from least one described cloth and spills the patterned layer that head is formed.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US11802375B2 (en) | 2016-02-08 | 2023-10-31 | Gpcp Ip Holdings Llc | Molding roll for making paper products |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| ES2954273T3 (en) | 2016-02-08 | 2023-11-21 | Gpcp Ip Holdings Llc | Methods of manufacturing paper products using a molding roller |
| CN108779606B (en) | 2016-02-08 | 2021-09-14 | Gpcp知识产权控股有限责任公司 | Method of making paper products using mold roll |
| CN109338785A (en) * | 2018-11-10 | 2019-02-15 | 长沙云聚汇科技有限公司 | A kind of nonwoven paper cloth processing unit (plant) |
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| CN1535343A (en) * | 2001-07-24 | 2004-10-06 | 日本制纸株式会社 | Bulky pulp, method for production thereof and converted paper or multi-ply paper using bulky pulp |
| CN1539043A (en) * | 2001-08-01 | 2004-10-20 | �����ķ-�Ӷ�˹�� | Patterned paper |
| CN2749917Y (en) * | 2004-10-28 | 2006-01-04 | 王吉祥 | Decorative wall paper of grass cutting |
| CN1745212A (en) * | 2003-02-06 | 2006-03-08 | 宝洁公司 | Fibrous structure comprising cellulosic and synthetic fibers and method for making the same |
| CN102677548A (en) * | 2012-05-28 | 2012-09-19 | 金红叶纸业集团有限公司 | Life paper and manufacture method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2006097186A (en) * | 2004-09-29 | 2006-04-13 | Nippon Paper Industries Co Ltd | Backing paper for wallpaper |
| JP5479768B2 (en) * | 2009-03-31 | 2014-04-23 | 大王製紙株式会社 | Kitchen paper |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1535343A (en) * | 2001-07-24 | 2004-10-06 | 日本制纸株式会社 | Bulky pulp, method for production thereof and converted paper or multi-ply paper using bulky pulp |
| CN1539043A (en) * | 2001-08-01 | 2004-10-20 | �����ķ-�Ӷ�˹�� | Patterned paper |
| CN1745212A (en) * | 2003-02-06 | 2006-03-08 | 宝洁公司 | Fibrous structure comprising cellulosic and synthetic fibers and method for making the same |
| CN2749917Y (en) * | 2004-10-28 | 2006-01-04 | 王吉祥 | Decorative wall paper of grass cutting |
| CN102677548A (en) * | 2012-05-28 | 2012-09-19 | 金红叶纸业集团有限公司 | Life paper and manufacture method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US11802375B2 (en) | 2016-02-08 | 2023-10-31 | Gpcp Ip Holdings Llc | Molding roll for making paper products |
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