CN1038474A - Filter paper made from mulberry bark biber and manufacture method thereof - Google Patents
Filter paper made from mulberry bark biber and manufacture method thereof Download PDFInfo
- Publication number
- CN1038474A CN1038474A CN 88103605 CN88103605A CN1038474A CN 1038474 A CN1038474 A CN 1038474A CN 88103605 CN88103605 CN 88103605 CN 88103605 A CN88103605 A CN 88103605A CN 1038474 A CN1038474 A CN 1038474A
- Authority
- CN
- China
- Prior art keywords
- paper
- filter paper
- synthetic resin
- fiber
- thermoplasticity synthetic
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
Landscapes
- Paper (AREA)
Abstract
A kind of filter paper made from mulberry bark biber and manufacture method thereof that contains thermoplastic resin.Adopt mulberry fibre to make raw material and slurry flow path direction and the vertical method manufacturing of the paper captain net direction of motion.By to the composition of the synthetic resin emulsion that is coated with and the control of content, can make heat sealable respectively or the filter paper of heat sealability not.This kind contains the filter paper made from mulberry bark biber of thermoplastic resin, in boiling water, have enough wet strengths, each to etc. epistasis, hygroscopicity and permeability.
Description
The present invention relates to a kind of composition and manufacture method thereof of filter paper, promptly can in boiling water, work, make it can have thermo-compression bonding or do not have the filter paper made from mulberry bark biber and the manufacture method thereof of cementability by the content of grasping thermoplastic resin in the fiber about a kind of.
Existing filter paper, for improve intensity, drainability and Thermoadhesive under its hygrometric state (promptly usually meaning heat sealability), all be to adopt the natural plant fibre cellulose fiber, as abaca, jute, abaca or other wood pulp fibre and artificial synthetic thermoplastic fibre, ethylene-propylene composite fibre etc. evenly mix or the layering starching comes papermaking.For increasing wet strength, often need to add wet strength agent.And then make the synthetic fiber fusion through heat treatment, cling string and form a kind of multi-ply paper with thermal adhesive layer and string basic unit.Because this paper purposes the most widely is to make packing tealeaves, so that the pouch that brews, so the commercial tea filter paper of often being called.And be divided into heat sealability and heat sealability not according to the content and structure of distribution character of thermoplastic fibre wherein, can heat pressure adhesive and two kinds of heat pressure adhesives not.
Most typical example, as U.S. Pat 2,414, the method for the 833 manufacturing heat sealability multi-layer fiber paper of being addressed.The principle of this method is to make non-heat-sealable fiber suspension flow through an elementary flow box, and And constantly tiltedly is deposited as a basic ply of paper on the net one.The heat-sealable fiber raw material near or just enter elementary flow box in the oblique position of online deposition at non-heat-sealable fiber.Heat-sealable fiber mixes slightly with non-heat-sealable fiber, flows through elementary flow box.Non-heat-sealable fiber had an opportunity to form a basic unit or non-hot sealing layer before the heat-sealable fiber deposition.Then, heat-sealable fiber just forms hot sealing layer in basic unit.The paper of Xing Chenging in this way, the one side that contacts with oblique net is topped by non-hot sealing layer, and the upper surface of paper has one deck heat-sealable fiber.Constitute by two kinds of fibre blends therebetween.Therefore, this paper only has the Thermoadhesive of single face.
Synthetic thermal viscosity fiber generally all is smooth shaft-like fibrous material, and this is heavy little than string, for improving its dispersiveness, needs to add dispersing agent for fibre.
For improving the wettability and the seepage of water of this kind multi-layer fiber paper, often adopt chemical method or physical method to handle.As add surfactant or lubricant etc.In addition, before heat treatment, adopt processing such as making hot sticky layer breaks, rearrangement usually.Use a kind of controllable little water droplet or water smoke directly to spray hot sticky layer as Canadian Patent CA1 138 239, make the hot sticky fiber on the fibrous suspension upper strata that is in the System of Paper Machine Head Box produce local displacement, form many controlling the size and the small pit of size, and basic unit's fiber at this place is come out, not topped by hot sticky fibrage.Thereby obtain required infiltration and moisture sorption effect.
Make the thermal viscosity fiber filter paper in the past, and be to use mixing of string cellulose fiber and synthetic fiber or layering to copy paper.So need to adopt the raising synthetic fiber decentralization of many complexity and the measure of the uniformity of mixing, paper wet strength, hygroscopicity and permeability thereof with string.For multi-ply paper, be hot sticky layer if having only one side, its direction to be considered when then hot sticky, otherwise enough adhesion strengths can not be guaranteed.In addition, the heat treatment process of this paper needs to break away from the paper machine and carries out on other Equipment for Heating Processing.Thereby the production efficiency of paper often is limited by inefficient heat treatment process.
The present invention be intended to utilize extensive plant in the paper mulberry bark fiber in area, temperate zone as raw material make fiber filter paper ， And provide a kind of filter paper is had be suitable in boiling water, soak and the manufacture method of strainability.This filter paper made from mulberry bark biber is to copy the body paper of making that does not contain wet strength agent by mulberry fibre, then the not dry thing-resin emulsion of painting synthetic resin and making.By control, can make filter paper make hot sticky type or two kinds of filter paper of non-hot sticky type (being heat-sealing type and non-heat-sealing type) to emulsion composition and content.Hot sticky type filter paper can be bonded into heat-sealing type and soak packaging material under high temperature (155～170 ℃) pressurized state, as make the decoction bag of containing Chinese medicine or coffee, the filter bag of making tea bag, fast-food soup stock etc., also can be used for filling the packaging bag of volatility or gas permeability requirements.As hold the packaging bag of active carbon, drier, deodorant, camphor etc.
The present invention is a raw material with the paper mulberry bark fiber, adopt the slurry flow path direction defeated slurry mode vertical to make filter paper made from mulberry bark biber with the fourdrinier wire direction of motion of paper machine, semi-finished product-the synthetic resin emulsion of painting synthetic resin undried on the filter paper made from mulberry bark biber of the wet strength reason without any increase then becomes through the heat treatment typing and a kind ofly to have bigger wet strength, permeability, wettability and each is to characteristics such as equal strength.By control with select the kind and the content thereof of thermoplastic resin in the mulberry fibre, making can be hot sticky or the filter paper of hot sticky type not.
The filter paper made from mulberry bark biber that contains thermoplastic resin of the present invention, it is raw material that employing contains the mulberry fibre of alpha cellulose more than 92%, the technological process of its pulping and paper-making is as follows:
Mulberry skin → cut-out → boiling → wash material
↓
Cut ← copy paper ← bleaching ← making beating
↓
Coating → plasticizing → washing → drying
↓
Pack ← cut
The mulberry skin that at first will meet the slurrying requirement is cut to the length of regulation, after alkali lye and vapour cooking, and residual alkali of flush away and fiber fines.Then, with the mulberry fibre making beating of gained, make it to disperse to be the paper pulp of high free state.This paper pulp does not add the additive of any increase wet strength and injects the stock tank of fourdrinier machine after bleaching, makes paper pulp copy paper on the fourdrinier wire along delivering to perpendicular to the fourdrinier wire travel direction then.After the extruding oven dry, promptly become the body paper of mulberry skin long fiber filter paper again.
Because the fourdrinier wire that the present invention uses is copied the paper method, its slurry stream is perpendicular to the fourdrinier wire direction of motion, starching, so slurry is subjected to net confidential little to the general paper of influence of pulling motion, fiber is not to arrange along the fourdrinier wire direction of motion singlely, thereby improves into the cross directional tensile of paper under the condition that does not add any wet strength agent.
The present invention selects for use a kind of suitable, emulsion-like synthetic resin without the processing of pneumatic conveying drying method, as the vinyl chloride-vinyl acetate copolymer resin emulsion, or the emulsion of oleic series polymer, as the heat adhesive of fiber, it is applied on the body paper of filter paper made from mulberry bark biber, owing to contain the water about 64% in the emulsion form resin, thereby but the permeability of nationality water brings all the other resins of about 36% in the emulsion form resin inner chamber of mulberry fibre into, and And is rolled in the outer surface of mulberry fibre.In heat treatment plasticizing process subsequently, be distributed in the inside and outside resin of fiber and be cross-linked with each other, form little space frame of porous, make the fiber of filter paper made from mulberry bark biber have certain hydrophobicity, and interfibrous space have hygroscopicity and permeability.After washing, dry and cut and to be packaged as finished paper.
As everyone knows, the filter paper of working under hygrometric state should have certain permeability to need enough wet strengths again.Thereby the structure of inevitable requirement page is one deck micronetwork structure as thin as a wafer that is made of the strong long fiber of brooming ability.Usually adopt the flax fibre of the torrid zone and subtropical zone growth, come slurrying as the Manila harl.Thereby raw material sources are subjected to certain region restriction.The present invention adopts and is widely distributed in the paper mulberry bark in temperate zone as raw material.This abaca of the length of paper mulberry bark fiber is big 3.5 times, and the tension stress of single fiber is big 1 times.Other physical properties and abaca are approximate, as follows Lie Gebiao.Therefore available makes filter paper as raw material.
Common filter paper all follows papermaking process commonly used, adopts the tiltable fourdrinier wire of forming table and the paper machine of cylinder combination to copy paper, because its speed of a motor vehicle is generally all about 100 meters/minute, it is consistent with the fourdrinier wire direction of motion to starch flow path direction.Slurry stream is subjected to the influence of net to pulling motion, and fiber is vertical arrangement basically, thereby the ratio of the endwise tensile strength of page and transverse tensile strength can reach 6: 1.Because page has directionality, thereby must consider its this anisotropy during page reprocessing.
The single fiber tension stress of mulberry skin and abaca (unit: gram)
| The mulberry skin | Abaca | |
| Max min mean value | 44.50 3.00 19.30 | 13.00 5.00 9.00 |
The chemical analysis of mulberry skin and abaca (%)
| The mulberry skin | Abaca | |
| Moisture content ash lignocellulose | 13 5.15 20.5 60.4 | 11.3 10.2 63.72 |
Special slurry flow path direction of the present invention is perpendicular to the paper technology of the fourdrinier wire direction of motion, under the condition that does not add any wet strength agent, can make the fibr tissue of filter paper almost be direction-free arranging, its tensile strength is about 0.8 kilogram, and cross directional tensile is about about 0.78 kilogram, and both are equal substantially.
Common thermal viscosity filter paper will add the fiber of thermoplasticity synthetic resin, and for obtaining this kind fiber, synthetic resin need pass through series of processes such as granulation, section, stretching, heat treatment, cut-out respectively.And the structure of filter paper is a string and the mixing or hierarchy of synthetic fiber.Because the proportion of synthetic fiber is little than string, so synthetic fiber run off greatly in paper-making process, heat treatment technics complexity, expense height.
The present invention adopts the synthetic resin emulsion dewater without pneumatic conveying drying to be coated on the filter paper, and the permeability of utilizing the moisture content in the emulsion is brought resin the inner chamber of mulberry fibre into, and And evenly is rolled in the outer surface of fiber, and heating plasticizing forms on same coating machine then.Thereby a series of procedures and the energy consumption of saving the manufacturing resin fibre.The coating weight that And can control emulsion is made two kinds of filter paper of hot sticky type or non-hot sticky type (being heat sealability and non-heat sealability) respectively.
The present invention will be described in more detail by the following examples.
One of embodiment: the raw material of filter paper made from mulberry bark biber body paper and performance.
Employing meets the raw material of the mulberry skin of following quality requirement as manufacturing filter paper made from mulberry bark biber body paper:
Moisture content is not more than 15%
Cold water extract 8.1%
The hot water extract 17.01%
1%NaOH extract 50.10%
Alcohol-benzene extractive 15.10%
Lignin 20.50%
Alpha cellulose 94%
The mulberry skin that meets above-mentioned quality, the body paper performance of the uncoated thermoplastic resin that the paper process that adopts the present invention to use is made is as follows:
Quantitative 10～11 gram/rice
2
PH value 6～7
Ash is less than 0.5%
Moisture content 7～8%
Vertically dry tensile strength 200 grams are/15 millimeters
Peculiar smell such as no free chlorine.
Two of embodiment: the method for making the filter paper made from mulberry bark biber body paper.
The technological process of papermaking:
Mulberry skin → cut-out → boiling → making beating
↓
Former paper product ← cut ← paper is copied ← is bleached
Technological parameter:
1, the mulberry skin is cut into 0.5～2 centimeter length.
2, total alkalinity be in 23～26% the alkali lye with vapour cooking after 3.5～6 hours, residual alkali of flush away and fiber fines.
3, making beating is 40～60 minutes.
4, with 1～3% effective chlorine, 5～10% sulfuric acid, 25～30 ℃ of bleachings down, total bleaching time is about 7 hours.At last, making the paper pulp pH value is 6～8.
5, discongest, concentration 0.6%, viscosity 75～80 seconds.
6, copy paper, paper pulp is pumped in the storage stock tank of fourdrinier wire both sides, and then from delivering to along on the fourdrinier wire of paper machine lengthwise movement perpendicular to the direction of fourdrinier wire.
Net groove water level: 18～23 centimetres
Online concentration: 0.20～0.25%
Online viscosity: 67～70 seconds (engler)
Drying cylinder vapour pressure: 3 kilograms per centimeter
2
Three of embodiment: filter paper made from mulberry bark biber body paper coating thermoplastic synthetic resin emulsion.
1, with deionized water the thermoplasticity synthetic resin emulsion is made into concentration about 20%.
2, make the body paper of filter paper made from mulberry bark biber absorb synthetic resin emulsion with saturated infusion process, generally should be controlled at every square metre and contain about oven-dry weight 4 grams.
3, get rid of in the page behind the moisture content, be warming up to about 170～210 ℃, make the synthetic resin particulate realize that in moment macromolecule is crosslinked, become a coated is got in touch fiber lumens again in fiber surface the little three-dimensional grid of high polymer.
4, adjust the shrinkage factor of page and tentatively washing.
5, the wet strength of test page.
6, dry, batch, cut and pack.
Four of embodiment. the thermoplasticity synthetic resin of selecting for use the vinyl chloride-vinyl acetate copolymer resin emulsion to use as coating.
In the vinyl chloride-vinyl acetate copolymer resin emulsion that is adopted, vinyl-chloride-containing 89～95%, vinyl acetate 5～11%, solids content is about 36% in the emulsion, and the absolute viscosity of emulsion is 1.60～1.80 centipoises.Coating process is seen three of example.
Five of embodiment. the thermoplasticity synthetic resin of selecting for use the emulsion of oleic series polymer to use as coating.
All belong to the polymer emulsion of oleic series, all can be used as coating and use thermoplasticity synthetic resin, below only lift three examples;
(1) 8% methymethacrylate polymer emulsion;
Methacrylic acid fourth fat-acrylonitrile copolymer emulsion of (2) 8%;
(3) 8% methymethacrylate-styrol copolymer emulsion.
Coating process is seen three of embodiment.
Claims (6)
1, a kind of string filter paper that contains thermoplasticity synthetic resin is characterized in that body paper is to form as the raw material system of copying by containing the paper mulberry bark fiber of alpha cellulose more than 92%.
2, by the described filter paper of claim 1, it is characterized in that body paper is that the perpendicular paper process system of copying of the employing slurry flow path direction and the paper captain net direction of motion forms, slurry stream pumps into the storage stock tank of fourdrinier wire both sides earlier, delivers on the fourdrinier wire by storing stock tank again.
3, by the described filter paper of claim 1, it is characterized in that its contained thermoplasticity synthetic resin is to adopt thermoplasticity synthetic resin, feature is the emulsion that contains 89～95% vinyl chloride and contain 5～11% vinyl acetate copolymer resins, and coating and heat treatment plastify and forms on coating machine.
4, by the described filter paper of claim 1, it is characterized in that contained thermoplasticity synthetic resin, is to adopt thermoplasticity synthetic resin, the particularly emulsion of oleic series polymer, and coating and heat treatment plasticizing forms on coating machine.
5,, it is characterized in that making the temperature of thermoplasticity synthetic resin heat treatment plasticizing is 160～210 ℃ by claim 3 and 4 described filter paper.
6,, it is characterized in that determining that whether it be that the critical content scope of the thermoplasticity synthetic resin of heat sealability is 8～6 gram/rice by claim 3 and 4 described filter paper
2
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 88103605 CN1010329B (en) | 1988-06-17 | 1988-06-17 | Filter paper made from mulberry bark biber and making process thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 88103605 CN1010329B (en) | 1988-06-17 | 1988-06-17 | Filter paper made from mulberry bark biber and making process thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1038474A true CN1038474A (en) | 1990-01-03 |
| CN1010329B CN1010329B (en) | 1990-11-07 |
Family
ID=4832680
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 88103605 Expired CN1010329B (en) | 1988-06-17 | 1988-06-17 | Filter paper made from mulberry bark biber and making process thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1010329B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102011334A (en) * | 2010-11-11 | 2011-04-13 | 梁锋 | Method for pulping and making paper by using eucalyptus bark |
| CN103966911A (en) * | 2014-03-31 | 2014-08-06 | 蚌埠首创滤清器有限公司 | Flexible oil cleaner filter paper with high filtration efficiency and preparation method thereof |
-
1988
- 1988-06-17 CN CN 88103605 patent/CN1010329B/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102011334A (en) * | 2010-11-11 | 2011-04-13 | 梁锋 | Method for pulping and making paper by using eucalyptus bark |
| CN103966911A (en) * | 2014-03-31 | 2014-08-06 | 蚌埠首创滤清器有限公司 | Flexible oil cleaner filter paper with high filtration efficiency and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1010329B (en) | 1990-11-07 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN1141374A (en) | Method of producing fibers from stran and board products made therefrom | |
| CN103201426B (en) | Improve the method for the behavior in service of wet web, purposes and the paper of solution | |
| US11685096B2 (en) | Method for manufacturing fibrous yarn | |
| CA2869609C (en) | Method for preparing a membrane from fibril cellulose and fibril cellulose membrane | |
| CN1324193C (en) | Soft absorbent web material | |
| KR102451611B1 (en) | Method for making fibrous webs containing natural and synthetic fibers | |
| CN107250458B (en) | Thermoplastic fiber materials and preparation method thereof | |
| KR20090109532A (en) | Method of producing a paper product | |
| CN1650068A (en) | Method for making tissue and towel products containing crosslinked cellulosic fibers | |
| CN109790681A (en) | Pre-dispersed half-dried and dry fibers material method is converted by high-consistency paper pulp fiber | |
| CN85104314A (en) | Medical microporous multilayer felt and production method thereof | |
| CN1561187A (en) | Method for producing heat-generating formed product | |
| RU2000102887A (en) | CRAFT PAPER AND METHOD FOR ITS MANUFACTURE | |
| CN111172803B (en) | Method for preparing water-absorbing material | |
| CN110373945A (en) | A kind of ML kraft inner paper and its preparation process | |
| CN1287045C (en) | Bulky pulp, method for production thereof and converted paper or multi-ply paper using bulky pulp | |
| CN1183297C (en) | Method of producing pulp moldings | |
| CN110392699A (en) | Melt-processed material with high-cellulose fiber content | |
| CN1332818A (en) | Kraft wood fibers for carboxyalkyl cellulose | |
| CN1137585A (en) | Spunlace material with high bulk and high absorption capasity and method for producing such material | |
| CN115075058A (en) | Degradable oil-proof barrier paper and preparation process thereof | |
| CN109252415B (en) | A kind of kraft paperboard and its manufacturing method | |
| CN1038474A (en) | Filter paper made from mulberry bark biber and manufacture method thereof | |
| CN107245909B (en) | A kind of medical packing paper with clean stripping performance | |
| CN114575194B (en) | Magnetic material filter paper and production process and application thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C13 | Decision | ||
| GR02 | Examined patent application | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C15 | Extension of patent right duration from 15 to 20 years for appl. with date before 31.12.1992 and still valid on 11.12.2001 (patent law change 1993) | ||
| OR01 | Other related matters | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |