CN108914686A - A kind of leaching membrane paper and its production technology - Google Patents
A kind of leaching membrane paper and its production technology Download PDFInfo
- Publication number
- CN108914686A CN108914686A CN201810779884.3A CN201810779884A CN108914686A CN 108914686 A CN108914686 A CN 108914686A CN 201810779884 A CN201810779884 A CN 201810779884A CN 108914686 A CN108914686 A CN 108914686A
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- CN
- China
- Prior art keywords
- leaching membrane
- paper
- lamination
- polypropylene
- body paper
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- 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.)
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Classifications
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
- B32B27/10—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of paper or cardboard
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/32—Layered products comprising a layer of synthetic resin comprising polyolefins
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B29/00—Layered products comprising a layer of paper or cardboard
- B32B29/002—Layered products comprising a layer of paper or cardboard as the main or only constituent of a layer, which is next to another layer of the same or of a different material
-
- 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
- D21H19/80—Paper comprising more than one coating
- D21H19/84—Paper comprising more than one coating on both sides of the substrate
Abstract
The present invention provides a kind of leaching membrane paper and its production technologies, are related to field of packaging material.The leaching membrane paper includes body paper and leaching membrane layer, wherein the leaching membrane layer is coated on the surface of the body paper, and the leaching membrane layer is made by polypropylene material.It is coated since leaching membrane layer of the invention uses polypropylene material, the leaching membrane paper transparency being thusly-formed is good, contraction is small, heat-sealing temperature is low, adhesion strength is high, so that lamination paper product have the advantages that external form it is well-pressed it is beautiful, waterproof performance is good, intensity is high, can microwave heating, and it is low in cost.
Description
Technical field
The present invention relates to field of packaging material, more particularly, to a kind of high temperature resistant leaching membrane paper and its production technology.
Background technique
Paper packaging material used at present is usually that leaching membrane layer is equipped on any side plane of cardboard or on two sided planar, after
And the paper container of body is preset in machine-shaping, is used for containing hot water or ice water or warm-served food or dry product etc., existing product
Traditional PE coating film or PE material.
Applicants have discovered that at least there is following technical problem in existing procucts：1, permeance property is poor, using PE coating film shape
At lamination paper wood when carrying out grease penetration testing, bonding place will appear different degrees of infiltrating area, the barrier of product
Performance and sealing performance are poor；2, intensity and toughness are poor, main production material of the existing product for convenience of facial tissue bowl, convenience
Face is generally fried food and equipped with oil plant packet, is influenced individual face block edges by external force and easily punctures PE layers, when brewing instant noodles
When grease stain can infiltrate into outer surface therefrom, make that product seems unsightly and there are security risks.3, compound fastness is poor, easily occurs
Demoulding or lamination, have the product of capping after taking off lid, and the PE film for epiphragma easily occur together with product body paper tears it down, and break
The beauty of bad product and the safety used；4, facilitate facial tissue bowl made of the leaching membrane paper using PE coating film, usually in appearance
Prompt " can not microwave " in the font at position is printed, it is in use and its inconvenient.5, existing material coat display cream
White-opalescent, printing appearance true feeling effect are affected；6, in coating film process aspect, existing PE material melts flow velocity and leaching
Film speed is slow, and production efficiency is low.In addition, using production made of PE coating film, the cost is relatively high.
Summary of the invention
Deficiency based on the prior art, the purpose of the present invention is to provide a kind of leaching membrane paper and its production technologies, to solve
Leaching membrane paper in the prior art is using PE material as numerous defects existing for leaching membrane layer, and to achieve the above object, the present invention mentions
Following technical scheme is supplied：
The present invention provides a kind of leaching membrane paper, the leaching membrane paper includes body paper and leaching membrane layer, wherein the leaching membrane layer coating
In the surface of the body paper, the leaching membrane layer is made by polypropylene material.
According to a kind of preferred embodiment, the leaching membrane layer is through laminating machine extrusion coated by polypropylene material in the original
The surface of paper.
According to a kind of preferred embodiment, the polypropylene material includes atactic copolymerized polypropene.
According to a kind of preferred embodiment, the melt mass flow rate of the atactic copolymerized polypropene is 28g/10min.
According to a kind of preferred embodiment, the melting temperature of the atactic copolymerized polypropene is 142 degree.
According to a kind of preferred embodiment, the swell ratio of the atactic copolymerized polypropene is 1.3.
According to a kind of preferred embodiment, it is provided with adhesion coating on a surface of the body paper, by corona
The leaching membrane layer is coated on the adhesion coating of reason, wherein the adhesion coating is aqueous poly- third type coat.
The present invention also provides a kind of production technology of leaching membrane paper, the production technology is used to prepare leaching membrane paper above-mentioned；
Wherein the production technology includes the following steps：
Polypropylene random copolymer material is poured into hopper, by the suction device of laminating machine by the atactic copolymerized polypropene
The progressive sucking hopper of material；
Body paper is packed into laminating machine, and carries out leading paper；Wherein, body paper is carried out at corona before lamination to lamination face
Reason, corona are set as 35-50 dynes；
Laminating machine is by polypropylene random copolymer material hot melt from die head Extrusion Coating lamination in the body paper through sided corona treatment
Single or double on；
It is formed after lamination through cooling and pressing；Wherein, cooling temperature is 20-25 DEG C, air pressure 6-7Pa.
According to a kind of preferred embodiment, wherein the extrusion temperature of the laminating machine is 320 DEG C, die head temperature 320
DEG C, the melt temperature of polypropylene random copolymer material is 325 DEG C.
According to a kind of preferred embodiment, the lamination speed of the laminating machine is 200m/min, and when lamination, lamination grammes per square metre is
12-33gsm。
The body paper includes brown paper, art paper, art post paperboard, white duplex board or cultural paper or preferred, the body paper
It can be body paper made of the chemical wood pulp of various specifications.Preferably, body paper has two opposite surfaces.
Based on the above-mentioned technical proposal, a kind of leaching membrane paper provided by the invention, the leaching membrane paper include body paper and leaching membrane layer,
In, the leaching membrane layer is coated on the surface of the body paper, and the leaching membrane layer is formed by polypropylene material.Due to leaching of the invention
Film layer uses polypropylene material and coats, and the leaching membrane paper transparency being thusly-formed is good, contraction is small, heat-sealing temperature is low, bonding
Intensity is high so that lamination paper product have the advantages that the well-pressed beauty of external form, waterproof performance is good, intensity is high, can microwave heating, and
It is low in cost.
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.
The present invention provides a kind of leaching membrane paper, the leaching membrane paper includes body paper and leaching membrane layer, wherein the leaching membrane layer coating
In the surface of body paper, leaching membrane layer is formed by polypropylene material.Preferably, body paper can be the package paper of any material, former
Paper is also possible to brown paper, art paper, art post paperboard, white duplex board or cultural paper.Using polypropylene PP material as food packaging,
Such as disposable paper cup or facilitate covering material on facial tissue bowl internal chamber wall, edible safety, due to the high temperature resistance of PP material
So that the product high temperature resistance of manufacture is good, it can be used for microwave heating.
Preferably, leaching membrane layer is through laminating machine extrusion coated by polypropylene material in the surface of body paper.Preferably, polypropylene
Material includes atactic copolymerized polypropene or homopolymer polypropylene.Preferably, polypropylene material of the invention is random copolymerization poly- third
Alkene.In the present invention, atactic copolymerized polypropene of the present invention can be the atactic copolymerized polypropene of this field any conventional.
In situations where it is preferred, the polypropylene material is 3.3g/10min~28g/ in the melt mass flow rate of molten condition
10min.Preferably, the melt mass flow rate of atactic copolymerized polypropene is 28g/min, it is preferred that homopolymer polypropylene
Melt mass flow rate is 3.3g/min.The melt mass flow rate of the polypropylene material in GB/T3682 according to providing
Method be measured, wherein test temperature be 230 DEG C, load 2.16kg.
Preferably, in the present invention, the atactic copolymerized polypropene can be the random copolymer of propylene and ethylene.It is excellent
Choosing, wherein the content of ethylene unit unit is 0.1-8 weight %.
Preferably, the melting temperature of polypropylene material of the invention is 142~165 degree.Preferably, the random copolymerization is poly-
The melting temperature of propylene is 142 degree.Preferably, the melting temperature of the homopolymer polypropylene is 165 degree.
Preferably, the swell ratio of polypropylene material of the invention is 1.19~1.3.Preferably, the random copolymerization is poly-
The swell ratio of propylene is 1.3.Preferably, the swell ratio of the homopolymer polypropylene is 1.19.
According to another preferred method of implementation of the present invention, the present invention also provides a kind of production technology of leaching membrane paper, institutes
It states technique and is used to prepare leaching membrane paper above-mentioned；Wherein the production technology includes the following steps：
Polypropylene random copolymer material is poured into hopper, by the suction device of laminating machine by the atactic copolymerized polypropene
The progressive sucking hopper of material；
Body paper is packed into laminating machine, and carries out leading paper；Wherein, body paper is carried out at corona before lamination to lamination face
Reason, corona are set as 35-50 dynes；
Laminating machine is by polypropylene random copolymer material hot melt through die head Extrusion Coating lamination in the body paper through sided corona treatment
Single or double on；
It is formed after lamination through cooling, pressing；Wherein, cooling temperature is 20-25 DEG C, air pressure 6-7Pa.
Preferably, wherein the extrusion temperature of the laminating machine is 320 DEG C, and die head temperature is 320 DEG C, random copolymerization poly- third
The melt temperature of alkene material is 325 DEG C.
Preferably, the lamination speed of the laminating machine is 200m/min, and when lamination, lamination grammes per square metre is 12-33gsm.It is preferred that
, lamination grammes per square metre is 26-30gsm.It is furthermore preferred that lamination grammes per square metre is 26gsm.Preferably, lamination grammes per square metre can be according to practical need
It asks and is set.
Preferably, the laminating machine that the present invention uses includes hopper, Screw Extrusion area, strainer area, die head, corona zone, silica gel
Roller, cooling wheel, counter-pressure cylinder etc..The hopper, Screw Extrusion area, strainer area, die head are sequentially connected setting.The random copolymerization
Polypropylene material enters laminating machine from hopper, heats and squeezes by Screw Extrusion area, so that material becomes molten condition.At this
In invention, the extrusion temperature in control Screw Extrusion area is 320 DEG C, and the temperature setting of die head is 320 DEG C, and melt temperature is 325 DEG C.
The material of the molten state squeezed out from Screw Extrusion area injects in die head after the filtering of filtering barrier, and equal in film-form from die head
Uniform flow goes out.Silica gel roller is located at below die head, for transmitting and carrying body paper substrate.Wherein, paper is led by the corona system of corona zone
System, first carries out sided corona treatment, corona is set as 35-50 dynes before lamination.The material of the film-form molten state flowed out from die head
Continuous curtain coating is coated in the body paper substrate surface after sided corona treatment, then presses cooling and shaping rapidly through composite part.Wherein
Composite part is combined into the technique for pressing, cooling down by cooling wheel, silica gel roller and counter-pressure cylinder.
A preferred embodiment of the invention sets the speed of lamination as 200m/min in lamination.Setting leaching
Film grammes per square metre is 12-33gsm.Preferably, lamination grammes per square metre is 26-30gsm.It is furthermore preferred that when lamination, set lamination grammes per square metre as
26gsm.Then the body paper substrate after lamination successively passes through counter-pressure cylinder and chill roll, successively presses the body paper substrate after lamination
It closes and cooling, to obtain leaching membrane paper.The two-sided leaching membrane paper for being each formed with leaching membrane layer may be used also after this step in order to obtain
To use identical method, leaching membrane layer is formed in the another side of body paper substrate.
A preferred embodiment of the invention, the lamination temperature of the laminating machine are 320--325 DEG C.
A preferred embodiment of the invention, the body paper include brown paper, art paper, art post paperboard, white duplex board
Or cultural paper.
Leaching membrane paper made of polypropylene material of the applicant to two kinds of different characteristics is tested, and is shown in Table 1：
Table 1
As can be seen from Table 1, relative to the leaching membrane layer being made using homopolymer polypropylene material, using random copolymerization
The leaching membrane layer process velocity of polypropylene material is higher, product adhesive strength is stronger, heat sealability is stronger.Therefore leaching of the invention
The preferred polypropylene random copolymer material of film layer is made.
Polypropylene random copolymer material and the performance of the existing PE material as leaching membrane layer are as shown in table 2：
Table 2
| Classification | Polypropylene random copolymer material | Existing PE material |
| Flow velocity g/10min | 28 | 7 |
| Density g/cm3 | 0.900 | 0.918 |
| Swell ratio- | 1.3 | 1.75 |
| Fusing point DEG C | 142 | 108 |
| Speed m/min | 200 | 100 |
| Compound fastness | By force | It is weak |
| Intensity | It is high | It is low |
| Stiffness | It is high | It is low |
| Transparency | It is high | It is low |
| Heat sealability | By force | Difference |
It can thus be seen that the present invention is using its processing dissolution good fluidity of polypropylene random copolymer material, processing technology
Speed is fast, can greatly improve coating film production efficiency.As can be seen from the above table, polypropylene random copolymer material relative to
Its compound fastness of existing PE material is stronger, intensity is relatively higher, stiffness is higher, transparency is higher, heat sealability is stronger.
Since the fusing point of the polypropylene material of the invention used is higher by 30~40 than the existing PE material as leaching membrane layer
DEG C, it is therefore, relatively more stiffening using the leaching membrane paper after polypropylene material especially polypropylene random copolymer material processing, it will not be as PE
Leaching membrane paper made of material is so soft, and it is not in asking for heavy infiltration that therefore, leaching membrane paper barrier property of the invention is higher
Topic.And since the high temperature resistant degree of leaching membrane paper exceeds 120 DEG C that tableware for microwave oven limits, belonging to high temperature resistant can microwave heating material
Material.
The leaching membrane paper flexibility with super strength being made by polypropylene material of the invention, stiffness are high, waterproof and anti-
Permeance property is good；Specifically：1) its flexibility is strong, and when tearing is not easy to be torn；2) quality is stiffening, resistance to drop resistant resistance to compression, using this
The leaching membrane paper that the production technology and material of invention are made its stiffness and compression strength in equivalent specifications/grammes per square metre are super
1/3 times of existing procucts out.3) there is certain flexibility, in molding heating production, coating film shrinkage is small, adhesive strength
Height, the bonding of product abutting edge securely, are not easy to be pulled, and waterproof, seepage control permeability can be good.
The peel strength that coating film and body paper are improved by the leaching membrane paper that polypropylene material is made of the invention；By
It is impregnated after a certain period of time after coating with alcohol, oil-based liquid, coating is consolidated very much with the compound fastness of body paper to be not easy to be stripped, solution
The leakproofness of instant noodles of having determined capping, when tearing lid, epiphragma, by leukorrhagia, takes off usual instant noodles easily together with paper bowl coating film
The problem of film, stratification state, and the leaching that the present invention uses polypropylene material especially polypropylene random copolymer material to be made
Film paper is not in the above problem.
In addition, leaching membrane paper density of the invention is low, light specific gravity；Because paper container is to throw goods, the entrucking area of occupancy is big, material
Material density is low to cause made finished product specific gravity lighter, can be reduced under equal volume Packing Condition vehicle load reduce transport at
This.
A preferred embodiment of the invention, there are two opposite surfaces for leaching membrane paper tool of the invention, in body paper
A surface on be provided with adhesion coating, be provided with leaching membrane layer on the surface of adhesion coating.Preferably, to be processed in adhesion coating
Surface is through sided corona treatment.Preferably, adhesion coating is aqueous polyacrylamide coat.Preferably, it is coated on a surface of body paper
Then aqueous polyacrylamide coat dries moisture and forms aqueous polyacrylamide adhesion coating, by adhesion coating after sided corona treatment, then
Lamination atactic copolymerized polypropene forms leaching membrane layer on aqueous polyacrylamide adhesion coating.It can also be depending on the application with demand in leaching membrane layer
Upper formation functional layer.Increase adhesion coating in the present embodiment between body paper and leaching membrane layer, since the similar compatibility of adhesion coating is situated between
Between paper and plastics, can play the role of further being bonded body paper and leaching membrane layer, can effectively avoid original paper layer and
Leaching membrane layer is mutually removed.
Leaching membrane paper of the invention belongs to environmentally protective recyclable material, can preferably degrade, and more than other materials
Good recycling and degradation；With cost advantage, it is opposite with other materials price will compared with it is cheap.
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 (10)
1. a kind of leaching membrane paper, which is characterized in that the leaching membrane paper includes body paper and leaching membrane layer, wherein the leaching membrane layer is coated on
The surface of the body paper, the leaching membrane layer are made by polypropylene material.
2. leaching membrane paper according to claim 1, which is characterized in that the leaching membrane layer is to be squeezed by polypropylene material through laminating machine
Extrusion is overlying on the surface of the body paper.
3. leaching membrane paper according to claim 2, which is characterized in that the polypropylene material includes atactic copolymerized polypropene.
4. leaching membrane paper according to claim 3, which is characterized in that the melt mass flow speed of the atactic copolymerized polypropene
Rate is 28g/10min.
5. leaching membrane paper according to claim 4, which is characterized in that the melting temperature of the atactic copolymerized polypropene is 142
Degree.
6. leaching membrane paper according to claim 5, which is characterized in that the swell ratio of the atactic copolymerized polypropene is 1.3.
7. leaching membrane paper according to claim 6, which is characterized in that be provided with adhesion on a surface of the body paper
Layer, coats the leaching membrane layer on the adhesion coating Jing Guo sided corona treatment, wherein the adhesion coating is aqueous poly- third type coating
Layer.
8. a kind of production technology of leaching membrane paper, which is characterized in that the production technology is used to prepare preceding claims 1 to 7
Leaching membrane paper described in one；Wherein the production technology includes the following steps：
Polypropylene random copolymer material is poured into hopper, by the suction device of laminating machine by the polypropylene random copolymer material
Progressive sucking hopper；
Body paper is packed into laminating machine, and carries out leading paper；Wherein, body paper is subjected to sided corona treatment to lamination face before lamination, electricity
It is dizzy to be set as 35-50 dynes；
Laminating machine is by polypropylene random copolymer material hot melt from die head Extrusion Coating lamination in the list of the body paper through sided corona treatment
Face or it is two-sided on；
It is formed after lamination through cooling and pressing；Wherein, cooling temperature is 20-25 DEG C, air pressure 6-7Pa.
9. production technology according to claim 8, which is characterized in that wherein, the extrusion temperature of the laminating machine is 320
DEG C, die head temperature is 320 DEG C, and the melt temperature of polypropylene random copolymer material is 325 DEG C.
10. production technology according to claim 9, which is characterized in that the lamination speed of the laminating machine is 200m/min,
When lamination, lamination grammes per square metre is 12-33gsm.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810779884.3A CN108914686A (en) | 2018-07-16 | 2018-07-16 | A kind of leaching membrane paper and its production technology |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810779884.3A CN108914686A (en) | 2018-07-16 | 2018-07-16 | A kind of leaching membrane paper and its production technology |
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| CN108914686A true CN108914686A (en) | 2018-11-30 |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110004769A (en) * | 2019-04-24 | 2019-07-12 | 中山市旭森涂层材料有限公司 | A kind of plastic-coated lamination device |
| CN110713617A (en) * | 2019-09-18 | 2020-01-21 | 浙江鹏远新材料股份有限公司 | Degradable environment-friendly paper cup and preparation method thereof |
| CN110735360A (en) * | 2019-10-09 | 2020-01-31 | 浙江超凡日用品有限公司 | Production process of degradable paper bags |
| CN111719341A (en) * | 2020-06-27 | 2020-09-29 | 福建益百利包装材料有限公司 | PLA (polylactic acid) film coated paper and production process thereof |
| CN111926621A (en) * | 2020-07-16 | 2020-11-13 | 长沙铭凯纸制品有限公司 | Preparation method of combined environment-friendly paper |
| CN113511422A (en) * | 2021-04-09 | 2021-10-19 | 厦门艾美森新材料科技股份有限公司 | Completely degradable kraft paper buffer air cushion and preparation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110004769A (en) * | 2019-04-24 | 2019-07-12 | 中山市旭森涂层材料有限公司 | A kind of plastic-coated lamination device |
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| CN111719341A (en) * | 2020-06-27 | 2020-09-29 | 福建益百利包装材料有限公司 | PLA (polylactic acid) film coated paper and production process thereof |
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| CN113511422A (en) * | 2021-04-09 | 2021-10-19 | 厦门艾美森新材料科技股份有限公司 | Completely degradable kraft paper buffer air cushion and preparation method thereof |
| CN113752585A (en) * | 2021-08-23 | 2021-12-07 | 苏州市和好塑业有限公司 | Direct-spraying PP (propene Polymer) process for reducing glue layer of plastic box |
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