CN109098037A - A kind of compound BioPBS resin of lamination and the technique for preparing leaching membrane paper - Google Patents
A kind of compound BioPBS resin of lamination and the technique for preparing leaching membrane paper Download PDFInfo
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- CN109098037A CN109098037A CN201810970913.4A CN201810970913A CN109098037A CN 109098037 A CN109098037 A CN 109098037A CN 201810970913 A CN201810970913 A CN 201810970913A CN 109098037 A CN109098037 A CN 109098037A
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- biopbs
- leaching membrane
- paper
- resin
- lamination
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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
- D21H23/52—Addition to the formed paper by contacting paper with a device carrying the material
- D21H23/64—Addition to the formed paper by contacting paper with a device carrying the material the material being non-fluent at the moment of transfer, e.g. in form of preformed, at least partially hardened coating
-
- 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
-
- 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
- D21H19/24—Coatings without pigments applied in a form other than the aqueous solution defined in group D21H19/12 comprising macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- D21H19/28—Polyesters
-
- 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
- D21H21/00—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties
- D21H21/14—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties characterised by function or properties in or on the paper
-
- 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
- D21H21/00—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties
- D21H21/14—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties characterised by function or properties in or on the paper
- D21H21/38—Corrosion-inhibiting agents or anti-oxidants
-
- 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
- D21H25/00—After-treatment of paper not provided for in groups D21H17/00 - D21H23/00
- D21H25/04—Physical treatment, e.g. heating, irradiating
- D21H25/06—Physical treatment, e.g. heating, irradiating of impregnated or coated paper
Abstract
The present invention provides a kind of compound BioPBS resins of lamination and the technique for preparing leaching membrane paper, are related to organic high molecular compound technical field, solve the technical problem of production bad adaptability and peel strength difference.Include the following steps, S1, the compound BioPBS resin of lamination is mixed, into barrel and being gradually heated to 220-270 DEG C and keep so that lamination with compound BioPBS resin is melting charge；S2, is delivered to extrusion die for melting charge and squeezes out and be coated on paper and form leaching membrane layer, coat it is initial improve lamination grammes per square metre, preset standard grammes per square metre is gradually decrease to after stable；S3, the cooling pressing and forming of the cooling cylinder that the composite roll and coolant water temperature that the paper coated with the leaching membrane layer is successively 0.4-0.6MPa through pressure are 16-22 DEG C is leaching membrane paper.The present invention can make the melting charge squeezed out squeeze out stabilization, to improve the uniformity of lamination grammes per square metre；Improve the de- cylinder effect and peel strength of leaching membrane layer；And then improve the production adaptability and peel strength of leaching membrane paper.
Description
Technical field
The present invention relates to organic high molecular compound technical fields, more particularly, to a kind of compound BioPBS resin of lamination
With the technique for preparing leaching membrane paper.
Background technique
Poly butylene succinate (PBS), also referred to as polybutylene succinate or poly- succinic acid fourth diester contain in its main chain
There is the ester bond of facile hydrolysis, and main chain is submissive, is a kind of half crystalline thermoplastic resin with completely biodegradable energy, fusing point 114
DEG C, crystallinity is between 40~60%.Its performance, can be directly as plastic processing between polyethylene and polypropylene.It
With good processing performance, processing and forming can be carried out in common equipment, can also be molded, be blow molded, blown film, suction
The processing and formings such as modeling, lamination, foaming, spinning.Since poly butylene succinate has good biodegradable properties, can make
For full biodegradable material, it is applied to table ware, various household supplies articles, agricultural materials, biological medical polymer material etc.,
It can also be used as material toy, household electrical appliances, daily use chemicals, food, pharmaceutical packing material.
BioPBS biodegradable is produced by lamination technique using biological poly succinic acid-butanediol ester (BioPBS) to drench
Film paper hereinafter referred to as leaching membrane paper.Biological poly succinic acid-butanediol ester in a manner of melting charge lamination on paper and on paper
Form leaching membrane layer.
But leaching membrane paper has the problem of production bad adaptability and peel strength difference in the prior art.Wherein production adapts to
Property difference include following problem, one, since melting charge squeezes out unstable, the both ends of paper will appear discontinuity and lack material feelings when production
Condition, i.e. part paper are without melting BioPBS.Two, the lamination grammes per square metre fluctuation of BioPBS melting charge is big, the two sides grammes per square metre senior middle school of paper
Between grammes per square metre it is low, deviation reach 8g/m2.Three, lamination grammes per square metre is high, and lamination grammes per square metre is arranged in 25-30g/m2Even if being maintained at the lamination gram
The case where lower production again, both ends also have discontinuity to lack material situation, i.e., part paper is without melting BioPBS.Lamination grammes per square metre is lower, takes out
It is abnormal more serious that material, discontinuity lack material.Four, BioPBS melting charge squeezes out many small crystal points of appearance appearance, influences leaching membrane paper
Final product quality.The problem of peel strength difference is BioPBS melting charge Extrusion Coating on paper, being easier to BioPBS leaching membrane layer
It is removed with paper, and few paper hair adhesions on BioPBS leaching membrane layer.Using pulling force instrument detection peel strength in 0.2-
0.9N/15mm, data fluctuations are big and unstable.
Summary of the invention
First aspect present invention is designed to provide a kind of compound BioPBS resin of lamination, to solve in the prior art
The technical problem of existing production bad adaptability and peel strength difference.Optimization technique in many technical solutions provided by the invention
Many technical effects elaboration as detailed below that scheme can be generated.
To achieve the above object, the present invention provides following technical schemes:
A kind of compound BioPBS resin of lamination provided by the invention, in terms of quality percentage accounting, including following mass ratio
Material be prepared, BioPBS resin PZ71PM:BioPBS Resin FZ 91PM: antioxidant: remover=(5%-90%):
(5%-90%): (1%-5%): (1%-5%).
The beneficial effects of the invention are as follows by the lamination proportion of compound each material of BioPBS resin, can make compound
The melting charge that BioPBS resin is squeezed out when making lamination, which squeezes out, to be stablized, to improve the uniformity of leaching membrane layer grammes per square metre；Improve leaching
The de- cylinder effect and peel strength of film layer；And then improve the production adaptability and peel strength of leaching membrane paper.
Based on the above technical solution, the present invention can also be improved as follows.
Further, a kind of lamination includes antioxidant with compound BioPBS resin, the antioxidant
MZ7A0101 or antioxidant MB92AM；The remover includes remover MB71BM or remover MZ7C0201.
Further, the compound BioPBS resin of a kind of lamination, the BioPBS resin PZ71PM:BioPBS tree
Rouge FZ91PM: antioxidant: remover=(48%-56%): (40%-48%): (1%-3%): (1%-3%).
Second aspect of the present invention is designed to provide a kind of technique for preparing leaching membrane paper, to solve to exist in the prior art
Production bad adaptability and peel strength difference technical problem.Optimal technical scheme in many technical solutions provided by the invention
The many technical effects elaboration as detailed below that can be generated.
To achieve the above object, the present invention provides following technical schemes:
The compound BioPBS resin of lamination is mixed by a kind of technique preparing leaching membrane paper provided by the invention, S1, into
Enter in barrel and is gradually heated to 220-270 DEG C and keeps so that lamination with compound BioPBS resin is melting charge.S2 will be melted
Material, which is delivered to extrusion die and squeezes out and be coated on paper, forms leaching membrane layer, the initial raising lamination grammes per square metre of coating, after stable
It is gradually decrease to preset standard grammes per square metre.S3, the paper coated with the leaching membrane layer are successively the compound of 0.4-0.6MPa through pressure
The cooling pressing and forming of the cooling cylinder that roller and coolant water temperature are 16-22 DEG C is leaching membrane paper.Wherein lamination is this with compound BioPBS resin
The compound BioPBS resin of lamination described in invention first aspect.
The beneficial effects of the invention are as follows by step S1 to S3, the melting charge squeezed out can be made to squeeze out stabilization, to improve
The uniformity of leaching membrane layer grammes per square metre；Improve the de- cylinder effect and peel strength of leaching membrane layer；And then improve the production adaptability of leaching membrane paper
And peel strength.
Further, the technique for preparing leaching membrane paper, the step S2 further include existing for stablizing the leaching membrane layer
The small side thickness of breadth direction two sides and adjust the flow deflector and Y type copper bar positioned at the die lip two sides of extrusion die.
Further, the technique for preparing leaching membrane paper, the step S2 further include the mould for reducing the extrusion die
Interlabial gap.
Further, the technique for preparing leaching membrane paper, further include in the step S3 using preceding to the cooling cylinder
Surface cleaning is clean.
Further, the technique for preparing leaching membrane paper, institute is pasted with to avoid the leaching membrane layer in the step S3
The coolant water temperature can be reduced or/and increase the quality percentage accounting of remover by stating cooling cylinder.
Further, the technique for preparing leaching membrane paper, in the step S2 and S3, the conveying of the paper produces speed
Degree is 100 ± 50m/min.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
It obtains other drawings based on these drawings.
Fig. 1 is leaching membrane paper produced with combination structural schematic diagram of the present invention；
Fig. 2 is extrusion die adjustment process structural schematic diagram of the present invention；
Fig. 3 is the present invention small side thickness change schematic diagram corresponding with Fig. 2.
1- body paper in figure, 2- composite roll, 3- extrusion die, 4- extrusion melting charge, 5- leaching membrane layer, 6- cooling cylinder, 7- rectifier,
8- flow deflector, 9-Y type copper bar.
Specific embodiment
To make the object, technical solutions and advantages of the present invention clearer, technical solution of the present invention will be carried out below
Detailed description.Obviously, described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.Base
Embodiment in the present invention, those of ordinary skill in the art are obtained all without making creative work
Other embodiment belongs to the range that the present invention is protected.
First aspect present invention provides a kind of compound BioPBS resin of lamination, in terms of quality percentage accounting, including such as
The material of lower mass ratio is prepared, BioPBS resin PZ71PM:BioPBS Resin FZ 91PM: antioxidant: remover=
(5%-90%): (5%-90%): (1%-5%): (1%-5%).
Specifically, lamination coats substrate by laminating machine with compound BioPBS resin, base is coated on leaching membrane layer
On material.Substrate can use body paper.
BioPBS resin PZ71PM and BioPBS Resin FZ 91PM is respectively PTTMCC company of Thailand development & production
Two kinds of models of BioPBS resin are the prior art, and details are not described herein.The wherein sticky ratio of BioPBS resin PZ71PM
BioPBS Resin FZ 91PM viscosity is good, the removing of BioPBS resin PZ71PM proportion higher prepared leaching membrane layer and paper
Intensity is better, but compound BioPBS resin is serious with the extruded stock reduced amplitude of molten condition from extrusion die when coating paper,
Material is lacked so as to cause Extrusion Coating, takes out material problem, and stability is poor, and how at high cost manufacturing scrap is, it is difficult to enter volume production.But
BioPBS Resin FZ 91PM stability is good, and extruded stock is stablized, but viscosity is poor, and the peel strength of leaching membrane layer and paper is poor, can not
Meet product quality requirement.Anti-oxidant and in laminating machine the demoulding of antioxidant and remover being added with conducive to leaching membrane layer
Technique.
By the way that the ratio of BioPBS resin PZ71PM and BioPBS Resin FZ 91PM is rationally arranged, squeezed out so as to reduce
Material contracting material, lamination holiday and leaching membrane layer grammes per square metre are unstable, and can improve the phenomenon that leaching membrane layer glues cylinder, improve leaching membrane layer and substrate
The peel strength of contact surface.
BioPBS biodegradable leaching membrane paper, hereinafter referred to as BioPBS leaching membrane paper made by compound BioPBS resin are
A kind of environment-friendly materials, shaped article in use stablize by performance, in burial, compost, soil, water and activated sludge after use
Carbon dioxide and water are finally decomposed to by microorganism or the intracorporal enzyme of animals and plants under equal environment, it is environmentally friendly, it is substitution tradition
PE lamination paper product generates the preferred materials of " white pollution ".And as PE leaching membrane paper, BioPBS leaching membrane paper also has very well
Heat resistance, heat distortion temperature is close to 100 DEG C.BioPBS leaching membrane paper is widely used, and is used to prepare cold and hot drink container and cutlery box
Equal packing containers field (it is -30-100 DEG C that temperature range, which can be used).The processing temperature of BioPBS leaching membrane paper is drenched than traditional PE
Film paper is low, to save equipment energy consumption.
The preparation of the compound BioPBS resin of lamination can be refering to the work for preparing leaching membrane paper described in second aspect of the present invention
Skill, details are not described herein.
Optionally embodiment, antioxidant include antioxidant MZ7A0101 or antioxidant MB92AM.Demoulding
Agent includes remover MB71BM or remover MZ7C0201.
Specifically, antioxidant is used to improve the extrusion effect of melting charge, presentation quality.Wherein antioxidant MZ7A0101
More suitable for BioPBS resin PZ71PM, antioxidant MB92AM is more suitable for BioPBS Resin FZ 91PM.
Release agent improves de- cylinder for forming leaching membrane paper, that is, is detached from the effect of cooling cylinder.The higher demoulding effect of adding proportion
Fruit is better, but can be lower to peel strength.
Antioxidant MZ7A0101 and antioxidant MB92AM and remover MB71BM and remover MZ7C0201 is Thailand
PTTMCC company of state for antioxidant provided by BioPBS resin PZ71PM and BioPBS Resin FZ 91PM of the invention and
Remover is the prior art, and details are not described herein.
Optionally embodiment, BioPBS resin PZ71PM:BioPBS Resin FZ 91PM: antioxidant: remover
=(48%-56%): (40%-48%): (1%-3%): (1%-3%).
Specifically, if the following table 1 is BioPBS resin PZ71PM:BioPBS Resin FZ 91PM: antioxidant MZ7A0101: de-
The leaching membrane layer and paper peel strength and quantitative detection tables of data of film MB71BM=48%:48%:2%:2%.
Table 1
In table 1 in name of an article specification 740 for leaching membrane paper breadth 740mm, 280 be the grammes per square metre 280g/m of body paper2, 20 be coating
BioPBS grammes per square metre is 20g/m2.The quality of BioPBS is coated on the quantification of every square metre of paper of BioPBS.Wherein, to peel strength
4 groups are taken respectively with quantitative detection, and every group takes 5 samples to be tested.It is every that each name of an article specification, which corresponds to last line data,
The mean value of 5 samples of group.
It is known that peel strength is within the scope of 0.2-0.4N/15mm from table 1, BioPBS quantifies deviation in 18-23g/
m2Range, to can guarantee the stability of production in the case where reducing BioPBS quantitatively.
If the following table 2 is BioPBS resin PZ71PM:BioPBS Resin FZ 91PM: antioxidant MB92AM: remover
The leaching membrane layer and paper peel strength and quantitative detection tables of data of MZ7C0201=56%:40%:2%:2%.
Table 2
663* (BioPBS20+280+BioPBS20) indicates that the breadth of leaching membrane paper is 663mm, grammes per square metre 280g/m in table 22
Body paper two sides be coated with BioPBS grammes per square metre be 20g/m2.740* (300+BioPBS20) indicates that the breadth of leaching membrane paper is
740mm, grammes per square metre 300g/m2Body paper single side coating BioPBS grammes per square metre be 20g/m2.758* (230+BioPBS20) indicates lamination
The breadth of paper is 758mm, grammes per square metre 230g/m2Body paper single side coating BioPBS grammes per square metre be 20g/m2。643*(280+
BioPBS20 the breadth for) indicating leaching membrane paper is 643mm, grammes per square metre 280g/m2Body paper single side coating BioPBS grammes per square metre be 20g/
m2。
By in table 2 it is known that peel strength quantifies deviation in 18.6-21.8g/m in 1N/15mm or more, BioPBS2Model
It encloses.
By Tables 1 and 2 comparison it is found that first, by improving PZ71PM mass percentage accounting, the quality hundred of FZ91PM is reduced
Divide ratio, can be improved peel strength；Second, lamination grammes per square metre more tends to stablize, lamination grammes per square metre uniformity is more preferable；Third, from production
It is intuitively compared in experiment, adjustment demoulding model, de- cylinder effect is more preferable, drenches with polyethylene leaching membrane paper in the prior art i.e. PE
Film paper takes off cylinder effect indifference.
Second aspect of the present invention provides a kind of technique for preparing leaching membrane paper, includes the following steps, S1, by lamination with compound
BioPBS resin be mixed, into barrel and be gradually heated to 220-270 DEG C and keep so that the compound BioPBS of lamination
Resin is melting charge.S2, is delivered to extrusion die for melting charge and squeezes out and be coated on paper and form leaching membrane layer, and coating initially mentions
High lamination grammes per square metre, is gradually decrease to preset standard grammes per square metre after stable.S3, the paper coated with the leaching membrane layer is successively through pressing
The cooling pressing and forming of the cooling cylinder that the composite roll and coolant water temperature that power is 0.4-0.6MPa are 16-22 DEG C is leaching membrane paper.Wherein lamination
It is the compound BioPBS resin of lamination described in first aspect present invention with compound BioPBS resin.
Specifically, the LY-ASP100- that the equipment of production leaching membrane paper is developed using Jiangsu come adopted package packing machine Co., Ltd
1400-P type single side squeezes out PBS specific complex machine.Barrel is used for compound BioPBS resin Hybrid Heating and is delivered to extrusion die
Tool.In order to mix compound BioPBS resin and homogeneous heating, along conveying direction segmentation of the compound BioPBS resin in barrel
The multiple heating zones graduallyd raise the temperature are set, generally can be using five heating zones of outskirt segmentation heating module heating, it will
Granular compound BioPBS resin material softening is molten to flow-like.The heating temperature of first heating zone is 140-180 DEG C,
The heating temperature of second heating zone is 170-220 DEG C, and the heating temperature of third heating zone is 200-240 DEG C, the 4th heating zone
Heating temperature is 220-260 DEG C, and the heating temperature of the 5th heating zone is 220-270 DEG C.To keep compound BioPBS melting charge logical
Over-driving device drives the screw rod in barrel to push to the screen system progress contaminant filter that temperature is maintained at 220-270 DEG C.It is molten
Mesh after melting material is homogenous plasticized through screen system squeezes out, to improve melting uniformity and improve plasticizing effect.From mesh quilt
The melting charge of extrusion is maintained at 220-270 DEG C of connecting passage and mould along the sequentially connected internal temperature of melting charge conveying direction
Neck, mould neck are connect with extrusion die, and melting charge is delivered to extrusion die.In order to improve the mobility of melting charge, extrusion die
Inside is maintained at 220-270 DEG C.The temperature of namely melting charge is maintained in the range of 220-270 DEG C, and temperature is relatively low, is reduced molten
Melting material plasticizing effect is to reduce peel strength；Temperature drift, meeting decomposed after melting charge melting, destroys melting charge and melts material
The leaching membrane layer holiday or contracting material expecting molecular structure, and being formed after extrusion die extrusion, grammes per square metre is uneven, influences the appearance of leaching membrane layer
And peel strength.
Compound BioPBS resin particle is mixed resin and gradually heats and mix during transportation in step S1.When mixing
Between must assure that at 10 minutes or more, so that it is guaranteed that can be uniformly mixed.
In step S2, initial raising lamination grammes per square metre is coated, preset standard grammes per square metre is gradually decrease to after stable.To keep away
The melting charge for exempting from extrusion die extrusion is formed by that leaching membrane layer is unstable, the lamination two sides of paper take out material it is serious caused by holiday
Film and leaching membrane layer grammes per square metre are unstable.Specifically, whole device power-up initial stage, lamination preset standard grammes per square metre can using 18 ±
3g/m2, and the grammes per square metre for coating initial lamination may be set in 20g/m2Or 21g/m2, to improve lamination grammes per square metre, and run in equipment
Lamination grammes per square metre is gradually decreased after stabilization to standard grammes per square metre 18g/m2。
In step S3, as shown in Figure 1, wherein Fig. 1 is leaching membrane paper produced with combination structural schematic diagram of the present invention.2 He of composite roll
Cooling cylinder 6 is disposed adjacent, and gap therebetween is for conveying leaching membrane paper.In the production process, extrusion die 3 is located at composite roll 2 and cold
On the paper of body paper 1 between cylinder 6, that is, the composite part position of paper.Extrusion die 3 by 4 Extrusion Coating of melting charge in
Leaching membrane layer is formed on paper, composite roll 2 and cooling cylinder 6 press cooling leaching membrane layer and body paper 1, to form leaching membrane paper.
0.4-0.6MPa is set by the pressure of composite roll, to improve the attachment force of leaching membrane layer and paper, increases removing
Intensity.Pressure is excessive, bigger to the loss of composite roll, reduces the service life of composite roll；Pressure is too small, and composite roll does not play pressure
Effect is closed, peel strength is reduced.
Coolant water temperature in cooling cylinder is 16-22 DEG C.To avoid lamination face caused by the viscous cylinder of leaching membrane layer from full version pleat occur
It wrinkles or twines cylinder, and then improve de- cylinder effect.
The present invention can be such that the melting charge squeezed out squeezes out and stablize, the case where reducing lamination grammes per square metre by step S1 to S3
The lower uniformity for improving lamination grammes per square metre；Improve the de- cylinder effect and peel strength of leaching membrane layer；And then the production for improving leaching membrane paper is suitable
Answering property and peel strength.
Optionally embodiment, step S2 further include for stablizing the leaching membrane layer on the small side of breadth direction two sides
Thickness and adjust the flow deflector and Y type copper bar positioned at the die lip two sides of extrusion die.
Specifically, as shown in Figure 2 to Figure 3, wherein Fig. 2 is extrusion die adjustment process structural schematic diagram of the present invention.Fig. 3 is
The present invention small side thickness change schematic diagram corresponding with Fig. 2.Rectifier 7, flow deflector 8 and Y type copper bar 9 are successively pacified from top to bottom
Dress, and the die lip two sides lamination web width direction for being respectively positioned on extrusion die is symmetrically installed.To the die cavity two to die lip top
The melting charge of side plays the role of water conservancy diversion.Y type copper bar 9 has upper and lower opening and is connected with die cavity.It will be of the invention in aforementioned
Used equipment development producer and model are announced, therefore details are not described herein specific structure.
In order to shunt the melting charge for the die cavity two sides for flowing to extrusion die effectively, under pressure to stablize
The leaching membrane layer of extrusion is flat compared with leaching membrane layer thickness along width width direction thickness of two sides, that is, the small side thickness of leaching membrane layer two sides
Together, and then avoid small side thickness above leaching membrane layer thickness, that is, other part thickness of the leaching membrane layer adjacent with small side are concordant.
Shown in being corresponding in turn to from top to bottom such as Fig. 2 and Fig. 3, firstly, the position of rectifier 7, flow deflector 8 and Y type copper bar 9 is closed
System does not adjust, flows to the melting charge shunting not yet in effect of die cavity two sides, the leaching membrane layer squeezed out under pressure is along breadth degree side
To thickness of two sides it is partially thick, above leaching membrane layer thickness adjacent thereto.Secondly, inwardly promoting rectifier 7 or pulling out
Flow deflector 8 and Y type copper bar 9 adjust the flow equilibrium of melting charge, thus on the small side of adjusting of die lip two sides larger amplitude wide scope
Thickness.In one embodiment, the amplitude range about 10-30mm of small side protrusion is adjusted.Again, it inwardly promotes rectifier 7 and leads
Flow 8 pulls out Y type copper bar 9 to adjust the flow equilibrium of melting charge, thus in the more small size wide scope in die lip two sides
Adjust small side thickness.In one embodiment, the amplitude range about 5-15mm of small side protrusion is adjusted.But as flow deflector 8 continues
It inwardly pushes, will appear recess at the small side edge 5-15mm of leaching membrane layer in one embodiment, cause the small side of leaching membrane layer thick
The defect of degree.
Optionally embodiment, step S2 further include the die lip gap for reducing extrusion die.
Specifically, reducing the die lip gap of extrusion die to increase extrusion pressure, expand extruded stock coated area, in turn
Be conducive to improve extruded stock reduced amplitude, avoid that leaching membrane layer holiday covers paper and leaching membrane layer grammes per square metre is unstable.Between the die lip of extrusion die
Gap is generally within the scope of 0.8-1mm, in order to increase extrusion pressure, die lip gap can be arranged in 0.75mm or 0.75mm or so
Even more small―gap suture.
Optionally embodiment further includes using preceding clean to cooling cylinder surface cleaning in step S3.
Specifically, cooling cylinder plays the role of cooling and shaping to leaching membrane paper, leaching membrane layer needs to take off after directly contacting sizing with cooling cylinder
From cooling cylinder, that is, de- cylinder.It is before entire lamination equipment is not opened, cooling cylinder surface cleaning is clean in order to improve de- cylinder effect,
The compound BioPBS resin of molten condition from extrusion die with melt state Extrusion Coating on paper, be tightly attached to through cooling cylinder pressing
Cooling cylinder surface is with cooling and shaping.Hygienic quality need to be packed when using due to leaching membrane paper as packaging material for food, therefore cooling cylinder needs to cure
With alcohol cleaning-sterilizing.
Optionally embodiment, in step S3 with to avoid leaching membrane layer paste cooling cylinder can reduce coolant water temperature or/and
Increase the quality percentage accounting of remover.
Specifically, leaching membrane layer need to take off cylinder, therefore first aspect can be cooled down by reducing after cooling cylinder cooling and shaping in step S3
Coolant-temperature gage improves de- cylinder effect to reduce cooling cylinder surface temperature, but cooling water temperature is too low to reduce peel strength, cooling
The raising of coolant-temperature gage is conducive to the raising of peel strength, therefore cooling water temperature need to reduce in a certain range, to improve de- cylinder
Effect and peel strength.
Second aspect can also be mentioned by increasing the quality percentage accounting of compound BioPBS resin total amount shared by remover
The de- cylinder effect of height.Wherein first aspect and second aspect can be all made of or take one using implementation.
Optionally embodiment, in step S2 and S3, the conveying speed of production of paper is 100 ± 50m/min.
Specifically, paper is raw namely for the conveying of the body paper compound with leaching membrane layer in the manufacturing process of leaching membrane paper
It is faster to produce speed, the viscous cylinder of leaching membrane layer is more serious and peel strength can also reduce, because leaching membrane layer and cooling cylinder not up to adequately press
Purpose of the contact to not up to be cooled and shaped.Speed of production is too low, and the compound BioPBS resin of molten condition is as extruded stock
Too long with the pressing time of contact of cooling cylinder on paper, so that the temperature loss of extruded stock is excessive, peel strength can drop after pressing
It is low.Therefore 100 ± 50m/min is set by speed of production, to improve the de- cylinder effect of leaching membrane layer, and it is strong to can be improved removing
Degree.
It can also be by adjusting each in compound BioPBS resin for the production adaptability and peel strength that improve leaching membrane paper
Material mixture ratio is realized.
Here for first choice it should be noted that " inside " is directed towards the direction in accommodating space center, " outside " is far from accommodating
The direction in space center.
In the description of the present invention, it is to be understood that, term " center ", "upper", "lower", "front", "rear", " left side ",
The orientation or positional relationship of the instructions such as " right side ", " transverse direction ", " vertical ", "horizontal", "bottom" "inner", "outside" is based on the figure
Orientation or positional relationship is merely for convenience of description of the present invention and simplification of the description, rather than the device of indication or suggestion meaning or
Element must have a particular orientation, be constructed and operated in a specific orientation, therefore be not considered as limiting the invention.
In addition, term " first ", " second " are used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance
Or implicitly indicate the quantity of indicated technical characteristic.Define " first " as a result, the feature of " second " can be expressed or
Implicitly include at least one this feature.In the description of the present invention, the meaning of " plurality " is at least two, such as two, three
It is a etc., unless otherwise specifically defined.
In the present invention unless specifically defined or limited otherwise, term " installation ", " connected ", " connection ", " fixation " etc.
Term shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integral；It can be mechanical connect
It connects, is also possible to be electrically connected；It can be directly connected, can also can be in two elements indirectly connected through an intermediary
The interaction relationship of the connection in portion or two elements, unless otherwise restricted clearly.For those of ordinary skill in the art
For, the specific meanings of the above terms in the present invention can be understood according to specific conditions.
In the present invention unless specifically defined or limited otherwise, fisrt feature in the second feature " on " or " down " can be with
It is that the first and second features directly contact or the first and second features pass through intermediary mediate contact.Moreover, fisrt feature exists
Second feature " on ", " top " and " above " but fisrt feature be directly above or diagonally above the second feature, or be merely representative of
First feature horizontal height is higher than second feature.Fisrt feature can be under the second feature " below ", " below " and " below "
One feature is directly under or diagonally below the second feature, or is merely representative of first feature horizontal height less than second feature.
The above description is merely a specific embodiment, but scope of protection of the present invention is not limited thereto, any
Those familiar with the art in the technical scope disclosed by the present invention, can easily think of the change or the replacement, and should all contain
Lid is within protection scope of the present invention.Therefore, protection scope of the present invention should be based on the protection scope of the described claims.
Claims (9)
1. a kind of compound BioPBS resin of lamination, which is characterized in that in terms of quality percentage accounting, the material including following mass ratio
Material is prepared, BioPBS resin PZ71PM:BioPBS Resin FZ 91PM: antioxidant: remover=(5%-90%):
(5%-90%): (1%-5%): (1%-5%).
2. the compound BioPBS resin of lamination according to claim 1, which is characterized in that the antioxidant includes antioxygen
Agent MZ7A0101 or antioxidant MB92AM；The remover includes remover MB71BM or remover MZ7C0201.
3. the compound BioPBS resin of lamination according to claim 1, which is characterized in that the BioPBS resin
PZ71PM:BioPBS Resin FZ 91PM: antioxidant: remover=(48%-56%): (40%-48%): (1%-3%):
(1%-3%).
4. a kind of technique for preparing leaching membrane paper, which is characterized in that include the following steps,
The compound BioPBS resin of lamination is mixed S1, into barrel and be gradually heated to 220-270 DEG C and keep with
Make lamination with compound BioPBS resin melting charge；
S2, is delivered to extrusion die for melting charge and squeezes out and be coated on paper and form leaching membrane layer, coats and initial improves lamination gram
Weight, is gradually decrease to preset standard grammes per square metre after stable；
S3, the composite roll and coolant water temperature that the paper coated with the leaching membrane layer is successively 0.4-0.6MPa through pressure are 16-22
DEG C the cooling pressing and forming of cooling cylinder be leaching membrane paper.
Wherein the lamination is the described in any item laminations of Claims 1-4 with compound BioPBS tree with compound BioPBS resin
Rouge.
5. the technique according to claim 4 for preparing leaching membrane paper, which is characterized in that the step S2 further includes for stablizing
The leaching membrane layer breadth direction two sides small side thickness and adjust the flow deflector and Y type copper positioned at the die lip two sides of extrusion die
Item.
6. the technique according to claim 4 for preparing leaching membrane paper, which is characterized in that the step S2 further includes described in diminution
The die lip gap of extrusion die.
7. the technique according to claim 4 for preparing leaching membrane paper, which is characterized in that further include using in the step S3
It is preceding clean to the cooling cylinder surface cleaning.
8. the technique according to claim 4 for preparing leaching membrane paper, which is characterized in that with to avoid described in the step S3
Leaching membrane layer, which pastes the cooling cylinder, can reduce the coolant water temperature or/and increase the quality percentage accounting of remover.
9. the technique according to claim 4 for preparing leaching membrane paper, which is characterized in that in the step S2 and S3, the paper
The conveying speed of production in face is 100 ± 50m/min.
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| CN114855507A (en) * | 2022-05-05 | 2022-08-05 | 佛山市九利科技有限公司 | Outdoor pad and preparation process thereof |
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| Publication number | Publication date |
|---|---|
| CN109098037B (en) | 2021-03-23 |
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