CN106555365B - A kind of wet pressed pulp support and preparation method thereof of rub resistance and losing fibre preventing dust - Google Patents
A kind of wet pressed pulp support and preparation method thereof of rub resistance and losing fibre preventing dust Download PDFInfo
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- CN106555365B CN106555365B CN201611046689.7A CN201611046689A CN106555365B CN 106555365 B CN106555365 B CN 106555365B CN 201611046689 A CN201611046689 A CN 201611046689A CN 106555365 B CN106555365 B CN 106555365B
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- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H23/00—Processes or apparatus for adding material to the pulp or to the paper
- D21H23/02—Processes or apparatus for adding material to the pulp or to the paper characterised by the manner in which substances are added
- D21H23/22—Addition to the formed paper
- D21H23/50—Spraying or projecting
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- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H19/00—Coated paper; Coating material
- D21H19/10—Coatings without pigments
- D21H19/14—Coatings without pigments applied in a form other than the aqueous solution defined in group D21H19/12
- D21H19/18—Coatings without pigments applied in a form other than the aqueous solution defined in group D21H19/12 comprising waxes
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H19/00—Coated paper; Coating material
- D21H19/10—Coatings without pigments
- D21H19/14—Coatings without pigments applied in a form other than the aqueous solution defined in group D21H19/12
- D21H19/20—Coatings without pigments applied in a form other than the aqueous solution defined in group D21H19/12 comprising macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21J—FIBREBOARD; MANUFACTURE OF ARTICLES FROM CELLULOSIC FIBROUS SUSPENSIONS OR FROM PAPIER-MACHE
- D21J5/00—Manufacture of hollow articles by transferring sheets, produced from fibres suspensions or papier-mâché by suction on wire-net moulds, to couch-moulds
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- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Paper (AREA)
Abstract
The present invention provides a kind of rub resistance and the wet pressed pulp supports and preparation method thereof of losing fibre preventing dust, the described method comprises the following steps: (1) wet embryo are made successively through mashing, with slurry and forming processes in raw material and water；(2) the sprayed protection coating in wet embryo；(3) wet embryo for having sprayed protective coating obtains wet pressed pulp support finished product through hot pressing and subsequent processing.The present invention is by increasing spraying process in the preparation process of wet pressed pulp support; one layer of smooth and wear-resisting protective coating is formed on wet pressed pulp support surface; it can be during packed and transported be tested with actual shipment; paper pulp is avoided to hold out phenomena such as existing wiping is used up mao; the dust and plant fiber that there will be no friction to generate are detached from paper pulp support main body; the problem of polluting package interior space environment, it is possible to prevente effectively from electronic goods is because of failure caused by dust and plant fiber invasion, the risk damaged or scrapped.
Description
Technical field
The invention belongs to paper pulp technical field, it is related to a kind of wet pressed pulp support and preparation method thereof more particularly to one
The wet pressed pulp support and preparation method thereof of kind rub resistance and losing fibre preventing dust.
Background technique
Paper pulp support also known as paper mould are with carton leftover pieces, newsprint and the pure wood pulp of white etc. for raw material, and process is broken
The slurry for starching and deploying proportional concentration, according to product design, on the numerical control mould of customization, through vacuum adsorption molding,
The dry afterwards and environment-friendlypaper paper product of variety classes and purposes that is formed.
By the development of decades, paper pulp support is widely applied in packaging applications field, and technology is comparatively mature, packet
Include dry-pressing paper pulp support and wet pressed pulp support.Dry-pressing paper pulp support itself is more coarse, in terms of packaging applications, be suitable for larger part and
The product not high to packaging effect requirements；Wet pressed pulp support is suitable for more small-sized product, higher to packaging effect requirements interior
Support and outer box.With the raising of international community and consumer's environmental consciousness, wet pressed pulp support communicating terminal, miniature electric and
It is daily etc. to widely apply.
Before packaging scheme design, all considers to reduce plastic material to the greatest extent, improve resource utilization, reduce energy consumption and subtract
Few packing materials, so i.e. energy conservation and environmental protection, and achieve the effect that packaging is brief；Secondly, the artificial behaviour in terms of reducing packaging applications
Make, to save the packing cost of enterprise again.It is all that mobile phone, attachment are packed using Plastic bag before so that mobile phone is packed as an example
And specification, it places into plastic tray, additional gift box；Present Plastic bag is gradually cancelled, and paper card gradually substitutes former plastic cement
Support is used in the packaging of low and middle-end mobile phone, and paper pulp support substitution plastic cement support in middle and high end mobile phone packaging for holding in the palm.To subtract as far as possible
Less or plastic cement packing articles are substituted, to reach energy conservation and environmental protection, brief packaging effect and the target for saving packing cost.
Switch currently, High Tier Brand is completed from plastic tray to the packaging of wet pressed pulp support, as High Tier Brand is to packaging
The pursuit of effect.
CN 104074105A discloses a kind of method for paper pulp molding production, the described method comprises the following steps: (1) will be former
Feed powder is broken, desanding, milled processed, and paper pulp fiber is made；(2) by binder, auxiliary agent and water according to 10~15:1:10 of weight ratio~
Thickener is made in 15 mixings；(3) batch mixer is added in the paper pulp fiber of above-mentioned preparation and thickener and carries out mixing；(4) by above-mentioned mixing
It carries out blank and obtains mixing particle；(5) mould is injected into after foaming agent being added in above-mentioned mixing particle；(6) it forms；(7) cooling
Demoulding.
CN 105908578A discloses a kind of production method of moulded paper pulp product, and described method includes following steps:
(1) after being mixed and stirred for paper pulp fiber, water and polyacrylamide resin solution, slurry is obtained；(2) under condition of negative pressure, to slurry
Material carries out midge and is dehydrated, and obtains the wet base of paper mould of moisture content 60%~70%；(3) by the paper pulp of moisture content 60%~70%
It molds wet base and carries out thermal finalization, obtain the paper mould dry body of moisture content 6%~10%.
However the wet pressed pulp support that is prepared of the above method in terms of packaging applications there are still increasingly prominent deficiency and
Defect: by the practical application of industrialization, find existing wet pressed pulp support in packed and transported test and meeting in practical application and production
Product generation vibration friction generates wiping flower, and (such as dyeing paper pulp support toner, plant fiber and dust are detached from paper pulp support master with hair loss
Body), cause paper pulp support by the dyeing of packaging commodity, package interior space environment is polluted, with High Tier Brand environmental protection package
Theory is uncoordinated, seriously affects packaging effect.Meanwhile if dust enters in packaging electronic goods, there are electronic goods events
The risk for hindering, damaging or scrapping.
Therefore, how by upgrading wet pressed pulp support technique, commodity and wet pressed pulp support is solved and is tested by packed and transported
Generate that wipe the phenomenon that using up mao particularly important because vibration rubs during with actual shipment.
Summary of the invention
It can be generated with product generation vibration friction in packed and transported test with practical application for existing wet pressed pulp support
Colored and hair loss is wiped, causes paper pulp support by the dyeing of packaging commodity, pollutes package interior space environment, with High Tier Brand environmental protection
The problems such as theory of packaging is uncoordinated, seriously affects packaging effect, the present invention provides a kind of rub resistance and losing fibre preventing dust
Wet pressed pulp support and preparation method thereof.The present invention is by increasing spraying process in the preparation process of wet pressed pulp support, in wet pressing
Paper pulp support surface forms one layer of smooth and wear-resisting protective coating, can keep away during packed and transported is tested with actual shipment
Exempt from paper pulp and hold out phenomena such as existing wiping is used up mao, the dust and plant fiber that there will be no friction to generate are detached from paper pulp support main body, dirty
The problem of contaminating package interior space environment, it is possible to prevente effectively from electronic goods is because of event caused by dust and plant fiber invasion
The risk for hindering, damaging or scrapping.
To achieve this purpose, the present invention adopts the following technical scheme:
In a first aspect, the described method comprises the following steps the present invention provides a kind of wet pressed pulp support preparation method:
(1) wet embryo is made successively through mashing, with slurry and forming processes in raw material and water；
(2) sprayed protection coating in the wet embryo made from step (1)；
(3) wet embryo that protective coating has been sprayed in step (2) obtains wet pressed pulp support finished product through hot pressing and subsequent processing.
The method of the invention in the preparation process of wet pressed pulp support, formed wet embryo and it is hot-forming during, increase
Add spraying process, sprays one layer of smooth and wear-resisting protective coating on wet embryo surface, the protective coating of spraying is through hot press molding
Afterwards, one layer of smooth and wear-resisting protective layer can be formed on wet pressed pulp support surface, makes wet pressed pulp support obtained through hundreds of times
Frictional experiment test, though surface has and relatively dabs trace and do not lose powder still, fade, falling the case where bits or hair loss (plant fiber)
Occur.
It is used as currently preferred technical solution below, but not as the limitation of technical solution provided by the invention, passes through
Following technical scheme can preferably reach and realize technical purpose and beneficial effect of the invention.
As currently preferred technical solution, raw material described in step (1) is reed, straw, sugarcane, Wheat Straw, tree
Wood, bamboo or the combination for recycling any one in corrugated paper or at least two, the combination is typical but non-limiting example has: reed
The combination of the combination of reed and straw, sugarcane and Wheat Straw, bamboo and recycling corrugated paper combination, reed, straw and sugarcane group
Close, the combination of straw, sugarcane, Wheat Straw and bamboo, the combination of reed, straw, sugarcane, Wheat Straw and bamboo, reed, log,
Straw, sugarcane, Wheat Straw, trees, bamboo and the combination for recycling corrugated paper etc..
In the present invention, the raw material is not limited in raw material described above using recyclable and reproducible raw material, can
It is packed with changing from source, save the cost, while environmental protection and sustainable economic development can be taken into account.
Preferably, water described in step (1) is clear water and/or recirculated water.
Preferably, the solid-to-liquid ratio of raw material and water is (1.5~3) in step (1): 1000, such as 1.5:1000,1.7:
1000,2:1000,2.3:1000,2.5:1000,2.7:1000 or 3:1000 etc., it is not limited to cited numerical value, it should
Other unlisted numerical value are equally applicable in numberical range.
As currently preferred technical solution, toner and/or auxiliary agent is added during with slurry described in step (1).
In the present invention, toner, the color of adjustable slurry, with according to the needs of practical application are added during with slurry
Produce the wet pressed pulp support of different colours.
Preferably, the auxiliary agent be waterproofing agent, wet strength agent, fungicide, brightening agent or color fixing agent in any one or at least
Two kinds of combination, the combination is typical but non-limiting example has: the combination of waterproofing agent and wet strength agent, fungicide and brightening agent
Combination, the combination of brightening agent and color fixing agent, the combination of waterproofing agent, wet strength agent and fungicide, wet strength agent, fungicide, brightening agent and
The combination of color fixing agent, waterproofing agent, wet strength agent, fungicide, brightening agent and combination of color fixing agent etc..
As currently preferred technical solution, the spraying method of protective coating described in step (2) be hand spray and/
Or mechanically spraying.
As currently preferred technical solution, the spray head and table to be sprayed that are sprayed in spraying process described in step (2)
Face is in 80 °~90 °, such as 80 °, 81 °, 82 °, 83 °, 84 °, 85 °, 86 °, 87 °, 88 °, 89 ° or 90 ° etc., it is not limited to
Cited numerical value, other interior unlisted numerical value of the numberical range are equally applicable, and preferably 90 °.Heretofore described spray
Applying angle can need to be adjusted according to the structure and production of different product.But spray angle can not deviation it is excessive, if spraying
Angular deviation is excessive, and spray coating became uneven can be made even, influences the effect of protective coating.
Preferably, the uniformity of protective coating that control spraying obtains in spraying process described in step (2) is 75%~
95%, such as 75%, 77%, 80%, 83%, 85%, 87%, 90%, 93% or 95% etc., it is not limited to cited
Numerical value, other interior unlisted numerical value of the numberical range are equally applicable, and preferably 85~95%.The spraying of its protective coating includes
Product plane and side structure.
The method of the invention also needs strict control spray uniformity simultaneously in spraying process, if being unable to satisfy certain
The uniformity, can make product surface locally without processing to or handling blocked up makes surface touch smoothness have an impact.
As currently preferred technical solution, thickness≤100 μm of the spraying of protective coating described in step (2), such as
100 μm, 95 μm, 90 μm, 85 μm, 80 μm, 75 μm, 70 μm, 65 μm or 60 μm etc. and lower, it is not limited to cited
Numerical value, other interior unlisted numerical value of the numberical range are equally applicable.
As currently preferred technical solution, protective coating described in step (2) is aqueous oil mixture.
Preferably, the aqueous oil mixture mainly by synthetic resin, acrylic emulsion, wax additive, dehydrated alcohol and
Water composition, wherein the content of synthetic resin be 40wt%~50wt%, such as 40wt%, 42wt%, 44wt%, 46wt%,
48wt% or 50wt% etc., it is not limited to cited numerical value, other interior unlisted numerical value of the numberical range are equally suitable
With；The content of acrylic emulsion be 38wt%~45wt%, such as 38wt%, 39wt%, 40wt%, 41wt%, 42wt%,
43wt%, 44wt% or 45wt% etc., it is not limited to cited numerical value, other interior unlisted numerical value of the numberical range
It is equally applicable；The content of dehydrated alcohol be 2wt%~5wt%, such as 2wt%, 2.5wt%, 3wt%, 3.5wt%, 4wt%,
4.5wt% or 5wt% etc., it is not limited to cited numerical value, other interior unlisted numerical value of the numberical range are equally suitable
With；The content of wax additive is 3wt%~6wt%, such as 3wt%, 4wt%, 5wt% or 6wt% etc., it is not limited to institute
The numerical value enumerated, other interior unlisted numerical value of the numberical range are equally applicable；Surplus is water.In the present invention, the protection is applied
The material of layer is not any materials (for example, when only spraying wax, being then unable to reach protecting effect), needs to keep certain
Concentration.
Preferably, the concentration of the aqueous oil mixture be 40wt%~60wt%, such as 40wt%, 43wt%,
45wt%, 47wt%, 50wt%, 53wt%, 55wt%, 57wt% or 60wt% etc., it is not limited to cited numerical value,
Other unlisted numerical value are equally applicable in the numberical range, preferably 50wt%.
The concentration of aqueous oil mixture has a significant impact for the formation of protective coating in the method for the invention, if its is dense
It spends greatly, spray equipment can be made to block, and high humidity hot pressing is easy discoloration；If its concentration is too small, abrasion-resistant surface performance will affect.
As currently preferred technical solution, the temperature of hot pressing described in step (3) is 120 DEG C~170 DEG C, such as
120 DEG C, 125 DEG C, 130 DEG C, 135 DEG C, 140 DEG C, 145 DEG C, 150 DEG C, 155 DEG C, 160 DEG C, 165 DEG C or 170 DEG C etc., but simultaneously not only
It is limited to cited numerical value, other unlisted numerical value are equally applicable in the numberical range.
Preferably, the time of hot pressing described in step (3) be 50s~120s, such as 50s, 60s, 70s, 80s, 90s,
100s, 110s or 120s etc., it is not limited to cited numerical value, other interior unlisted numerical value of the numberical range are equally suitable
With.
As currently preferred technical solution, subsequent processing described in step (3) includes trimming, inspection, packaging or goes out
Any one in goods or at least two combination.
More specifically, above-mentioned wet pressed pulp support preparation method can are as follows:
(1) color is added during with slurry successively through mashing, with slurry and forming processes in raw material and clear water and/or recirculated water
Wet embryo is made in powder and/or auxiliary agent；
(2) after drying, hand spray and/or mechanically spraying concentration are the water of 50wt% to the wet embryo made from step (1)
Property oil mixture aqueous solution form protective coating, the spray angle in spraying process is 80~90 °, and the protection sprayed applies
The uniformity of layer is 85%~95%；
(3) wet embryo that protective coating has been sprayed in step (2) is handled through hot pressing and trimming, inspection, packaging and shipment
To wet pressed pulp support finished product.
Second aspect, the present invention provides wet pressed pulp support made from above-mentioned wet pressed pulp support preparation method, the wet pressings
Paper pulp support surface is covered with protective coating.
Preferably, the uniformity of the protective coating be 75%~95%, such as 75%, 77%, 80%, 83%, 85%,
87%, 90%, 93% or 95% etc., it is not limited to cited numerical value, other interior unlisted numerical value of the numberical range
It is equally applicable, preferably 85%~95%.
Preferably, the protective coating is aqueous oil mixture.
Preferably, the aqueous oil mixture mainly by synthetic resin, acrylic emulsion, wax additive, dehydrated alcohol and
Water composition, wherein the content of synthetic resin be 40wt%~50wt%, such as 40wt%, 42wt%, 44wt%, 46wt%,
48wt% or 50wt% etc., it is not limited to cited numerical value, other interior unlisted numerical value of the numberical range are equally suitable
With；The content of acrylic emulsion be 38wt%~45wt%, such as 38wt%, 39wt%, 40wt%, 41wt%, 42wt%,
43wt%, 44wt% or 45wt% etc., it is not limited to cited numerical value, other interior unlisted numerical value of the numberical range
It is equally applicable；The content of dehydrated alcohol be 2wt%~5wt%, such as 2wt%, 2.5wt%, 3wt%, 3.5wt%, 4wt%,
4.5wt% or 5wt% etc., it is not limited to cited numerical value, other interior unlisted numerical value of the numberical range are equally suitable
With；The content of wax additive is 3wt%~6wt%, such as 3wt%, 4wt%, 5wt% or 6wt% etc., it is not limited to institute
The numerical value enumerated, other interior unlisted numerical value of the numberical range are equally applicable；Surplus is water.
Preferably, the concentration of the aqueous oil mixture be 40wt%~60wt%, such as 40wt%, 43wt%,
45wt%, 47wt%, 50wt%, 53wt%, 55wt%, 57wt% or 60wt% etc., it is not limited to cited numerical value,
Other unlisted numerical value are equally applicable in the numberical range, preferably 50wt%.
Compared with prior art, the invention has the following advantages:
The present invention forms one by increasing spraying process in the preparation process of wet pressed pulp support, on wet pressed pulp support surface
The smooth and wear-resisting protective coating of layer can avoid paper pulp support because vibration rubs during packed and transported is tested with actual shipment
It wipes and occurs wiping phenomena such as using up mao.Through wet pressed pulp support made from the method for the invention through wear-resisting test, mantle friction 200
Wiped when secondary spend it is slight, without without losing powder, fall bits and hair loss phenomenon；Flower is wiped when the mantle friction of wear-resisting test product 1000 times to aggravate, but
Still without losing powder, fall bits and hair loss phenomenon.
Will not occur the dust and plant fiber that generate by friction again through wet pressed pulp support made from the method for the invention
Be detached from paper pulp support main body, and then pollute package interior space environment the problem of, it is possible to prevente effectively from electronic goods because dust with
Failure caused by plant fiber is invaded, the risk damaged or scrapped.Under the premise of not influencing original packing design concept and effect,
Wiping will not be generated and use up a mao phenomenon by vibration friction by reaching wet pressed pulp support packaging.
Specific embodiment
In order to better illustrate the present invention, it is easy to understand technical solution of the present invention, below further specifically to the present invention
It is bright.But following embodiments is only simple example of the invention, does not represent or limit the scope of the present invention, this
Invention protection scope is subject to claims.
Specific embodiment of the invention part provides a kind of wet pressed pulp support and preparation method thereof, the wet pressed pulp support table
Face is covered with protective coating.
It the described method comprises the following steps:
(1) wet embryo is made successively through mashing, with slurry and forming processes in raw material and water；
(2) sprayed protection coating in the wet embryo made from step (1)；
(3) wet embryo that protective coating has been sprayed in step (2) obtains wet pressed pulp support finished product through hot pressing and subsequent processing.
The following are typical but non-limiting embodiments of the invention:
Embodiment 1:
A kind of wet pressed pulp support and preparation method thereof is present embodiments provided, the preparation method comprises the following steps:
(1) raw material and clear water are successively beaten, with slurry and forming processes by solid-to-liquid ratio 2:1000, wet embryo is made；
(2) after drying, hand spray concentration is the water-soluble of the aqueous oil mixture of 50wt% to wet embryo made from step (1)
Liquid forms protective coating, wherein the aqueous oil mixture is mainly by synthetic resin, acrylic emulsion, wax additive, anhydrous second
Alcohol and water composition, wherein the content of synthetic resin is 45wt%, the content of acrylic emulsion is 40wt%, the content of dehydrated alcohol
Content for 3wt%, wax additive is 4wt%, and surplus is water；The spray head of spraying in spraying process is in surface to be sprayed
90 °, the uniformity of the protective coating sprayed is 95%, protective coating with a thickness of 80 μm；
(3) sprayed in step (2) wet embryo of protective coating at 150 DEG C hot pressing 100s and trimming, inspection, packaging and
Shipment handles to obtain wet pressed pulp support finished product.
Embodiment 2:
A kind of wet pressed pulp support and preparation method thereof is present embodiments provided, the preparation method comprises the following steps:
(1) raw material and recirculated water are successively beaten by solid-to-liquid ratio 1.5:1000, with slurry and forming processes, during with slurry
Toner and auxiliary agent is added, the auxiliary agent is binder, and wet embryo is made；
(2) aqueous solution shape of the wet embryo made from step (1) through the aqueous oil mixture that mechanically spraying concentration is 40wt%
At protective coating, wherein the aqueous oil mixture mainly by synthetic resin, acrylic emulsion, wax additive, dehydrated alcohol and
The material mixings such as water allotment composition；Wherein the content of synthetic resin is 40wt%, the content of acrylic emulsion is 38wt%, anhydrous
The content of ethyl alcohol is 2wt%, and the content of wax additive is 3wt%, and surplus is water；The spray head of spraying in spraying process with it is to be painted
Applying surface is in 90 °, and the uniformity of the protective coating sprayed is 90%, protective coating with a thickness of 100 μm；
(3) sprayed in step (2) wet embryo of protective coating at 120 DEG C hot pressing 120s and trimming, inspection, packaging and
Shipment handles to obtain wet pressed pulp support finished product.
Embodiment 3:
A kind of wet pressed pulp support and preparation method thereof is present embodiments provided, the preparation method comprises the following steps:
(1) raw material and recirculated water are successively beaten, with slurry and forming processes by solid-to-liquid ratio 3:1000, are added during with slurry
Enter toner and auxiliary agent, the auxiliary agent is foaming agent, and wet embryo is made；
(2) wet embryo made from step (1) is formed through the aqueous solution for the water-based gloss oil that mechanically spraying concentration is 60wt% and is protected
Protect coating, wherein the aqueous oil mixture is mainly by synthetic resin, acrylic emulsion, wax additive, dehydrated alcohol and water etc.
Material mixing allotment composition；Wherein the content of synthetic resin is 50wt%, the content of acrylic emulsion is 45wt%, dehydrated alcohol
Content be 5wt%, the content of wax additive is 6wt%, and surplus is water；The spray head of spraying in spraying process and table to be sprayed
Face is in 80 °, and the uniformity of the protective coating sprayed is 90%, protective coating with a thickness of 90 μm；
(3) sprayed in step (2) wet embryo of protective coating at 170 DEG C hot pressing 50s and trimming, inspection, packaging and
Shipment handles to obtain wet pressed pulp support finished product.
Embodiment 4:
A kind of wet pressed pulp support and preparation method thereof is present embodiments provided, the preparation method is in addition to shield in step (2)
The uniformity of coating is outside 80%, and unclassified stores dosage is in the same manner as in Example 1 with preparation process, and wet pressed pulp support is made
Finished product.
Embodiment 5:
A kind of wet pressed pulp support and preparation method thereof is present embodiments provided, the preparation method is in addition to shield in step (2)
The uniformity of coating is outside 75%, and unclassified stores dosage is in the same manner as in Example 1 with preparation process, and wet pressed pulp support is made
Finished product.
Comparative example 1:
This comparative example provides a kind of wet pressed pulp support and preparation method thereof, and the preparation method comprises the following steps:
(1) wet embryo is made successively through mashing, with slurry and forming processes in raw material and clear water；
(2) wet embryo is made in step (1) to handle to obtain wet pressed pulp support through hot pressing and trimming, inspection, packaging and shipment
Finished product.
As it can be seen that preparation method described in this comparative example is other than the sprayed protection coating not in wet embryo, other steps with
It is identical in embodiment 1.
Wear-resisting test is carried out to wet pressed pulp support finished product obtained in above-described embodiment 1-5 and comparative example 1, test method is such as
Under:
(a) test sample flattened region surface and blank sheet of paper opposite grinding are taken；
(b) 4 pounds of load carry out 43 times per minute；
(c) being rubbed according to the number of regulation back and forth repeatedly, 200 times back and forth.
Test temperature: 23 DEG C；Humidity: 58%.
Criterion: wiping to wear-resisting test product surface and spend but do not lose powder, fall bits and hair loss phenomenon, receives.(note: picking,
Fall bits and hair loss phenomenon, 250mm sighting distance and the 45 ° of observations in test article surface 3 seconds visual dust, clast and plant fibers).
Slight, nothing is spent it is found that wiping at the friction of wet pressed pulp support finished surface 200 times obtained in embodiment 1-5 after tested
Without losing powder, fall bits and hair loss phenomenon；When the mantle friction of wear-resisting test product 1000 times wipe flower aggravate, but still without lose powder, fall bits and
Hair loss phenomenon, test result are qualified.
Flower is wiped at the friction of wet pressed pulp support finished surface 18 times obtained in comparative example 1, has bits phenomenon, test result is not
It is qualified.
In summary result can be seen that of the invention by increasing spraying process in the preparation process of wet pressed pulp support,
One layer of smooth and wear-resisting protective coating is formed on wet pressed pulp support surface, can be tested and actual shipment process in packed and transported
In, avoid paper pulp support from occurring phenomena such as wiping is used up mao because shaking friction.Through wet pressed pulp support made from the method for the invention
Will not occur the dust generated by friction again and plant fiber is detached from paper pulp support main body, and then pollute package interior space environment
Problem, it is possible to prevente effectively from electronic goods is because of failure caused by dust and plant fiber invasion, the risk damaged or scrapped.?
Under the premise of not influencing original packing design concept and effect, wiping flower will not be generated by reaching wet pressed pulp support packaging by vibration friction
Hair loss phenomenon.
The Applicant declares that the present invention is explained by the above embodiments method detailed of the invention, but the present invention not office
Be limited to above-mentioned method detailed, that is, do not mean that the invention must rely on the above detailed methods to implement.Technical field
Technical staff it will be clearly understood that any improvement in the present invention, equivalence replacement and auxiliary element to each raw material of product of the present invention
Addition, selection of concrete mode etc., all of which fall within the scope of protection and disclosure of the present invention.
Claims (21)
1. a kind of wet pressed pulp support preparation method, which is characterized in that the described method comprises the following steps:
(1) wet embryo is made successively through mashing, with slurry and forming processes in raw material and water；
(2) sprayed protection coating in the wet embryo made from step (1)；
(3) wet embryo that protective coating has been sprayed in step (2) obtains wet pressed pulp support finished product through hot pressing and subsequent processing；
Wherein, protective coating described in step (2) is aqueous oil mixture；
The aqueous oil mixture is mainly made of synthetic resin, acrylic emulsion, wax additive, dehydrated alcohol and water, wherein
The content of synthetic resin is 40wt%~50wt%, the content of acrylic emulsion is 38wt%~45wt%, dehydrated alcohol contains
Amount is 2wt%~5wt%, and the content of wax additive is 3wt%~6wt%, and surplus is water；
Concentration 40wt%~60wt% of the aqueous oil mixture.
2. wet pressed pulp support preparation method according to claim 1, which is characterized in that raw material described in step (1) is reed
Reed, straw, sugarcane, Wheat Straw, trees, bamboo or the combination for recycling any one in corrugated paper or at least two.
3. wet pressed pulp support preparation method according to claim 1, which is characterized in that water described in step (1) is clear water
And/or recirculated water.
4. wet pressed pulp support preparation method according to claim 1, which is characterized in that raw material and water consolidates in step (1)
Liquor ratio is (1.5~3): 1000.
5. wet pressed pulp support preparation method according to claim 1, which is characterized in that process with slurry described in step (1)
Middle addition toner and/or auxiliary agent.
6. wet pressed pulp support preparation method according to claim 5, which is characterized in that the auxiliary agent is waterproofing agent, wet strong
Any one in agent, fungicide, brightening agent or color fixing agent or at least two combination.
7. wet pressed pulp support preparation method according to claim 1, which is characterized in that protective coating described in step (2)
Spraying method be hand spray and/or mechanically spraying.
8. wet pressed pulp support preparation method according to claim 1, which is characterized in that spraying process described in step (2)
The spray head of middle spraying and surface to be sprayed are in 80 °~90 °.
9. wet pressed pulp support preparation method according to claim 8, which is characterized in that spraying process described in step (2)
The spray head of middle spraying and surface to be sprayed are in 90 °.
10. wet pressed pulp support preparation method according to claim 1, which is characterized in that spraying process described in step (2)
The uniformity for the protective coating that middle control spraying obtains is 75%~95%.
11. wet pressed pulp support preparation method according to claim 10, which is characterized in that spray coated described in step (2)
The uniformity for the protective coating that control spraying obtains in journey is 85%~95%.
12. wet pressed pulp support preparation method according to claim 1, which is characterized in that protective coating described in step (2)
Thickness≤100 μm of spraying.
13. wet pressed pulp support preparation method according to claim 1, which is characterized in that the aqueous oil mixture it is dense
Degree is 50wt%.
14. wet pressed pulp support preparation method according to claim 1, which is characterized in that the temperature of hot pressing described in step (3)
Degree is 120 DEG C~170 DEG C.
15. wet pressed pulp support preparation method according to claim 1, which is characterized in that hot pressing described in step (3) when
Between be 50s~120s.
16. wet pressed pulp support preparation method according to claim 1, which is characterized in that subsequent processing described in step (3)
Combination including any one in trimming, inspection, packaging or shipment or at least two.
17. wet pressed pulp support made from -16 described in any item wet pressed pulp support preparation methods according to claim 1, feature
It is, wet pressed pulp support surface is covered with protective coating.
18. wet pressed pulp support made from wet pressed pulp support preparation method according to claim 17, which is characterized in that described
The uniformity of protective coating is 75%~95%.
19. wet pressed pulp support made from wet pressed pulp support preparation method according to claim 18, which is characterized in that described
The uniformity of protective coating is 85%~95%.
20. wet pressed pulp support made from wet pressed pulp support preparation method according to claim 17, which is characterized in that described
Protective coating is aqueous oil mixture.
21. wet pressed pulp support made from wet pressed pulp support preparation method according to claim 20, which is characterized in that described
The concentration of aqueous oil mixture is 50wt%.
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| CN106948224B (en) * | 2017-04-18 | 2019-03-26 | 东莞当纳利印刷有限公司 | A kind of preparation method of moulded paper pulp product |
| CN107190582A (en) * | 2017-06-28 | 2017-09-22 | 常州市诚鑫环保科技有限公司 | A kind of cellulosic paper dish type Manufacturing Method of Products |
| CN107604769B (en) * | 2017-10-17 | 2020-02-21 | 苏州市吴中区华普纸塑包装有限公司 | Paper-plastic manufacturing process and product and application thereof |
| CN109082947B (en) * | 2018-07-17 | 2020-08-11 | 永发（河南）模塑科技发展有限公司 | Preparation method of colored pulp molded product |
| CN111472208A (en) * | 2020-04-13 | 2020-07-31 | 重庆凯成科技有限公司 | Manufacturing process of environment-friendly paper-plastic packaging product sprayed with biological wax |
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| CN101481562A (en) * | 2009-01-23 | 2009-07-15 | 华南理工大学 | Coating for spraying plant fibre paper pulp moulding product, spraying method and use |
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