CN110293734A - A kind of formula and its technique increasing the aluminum extruded compound interlaminar strength of paper - Google Patents
A kind of formula and its technique increasing the aluminum extruded compound interlaminar strength of paper Download PDFInfo
- Publication number
- CN110293734A CN110293734A CN201910567744.4A CN201910567744A CN110293734A CN 110293734 A CN110293734 A CN 110293734A CN 201910567744 A CN201910567744 A CN 201910567744A CN 110293734 A CN110293734 A CN 110293734A
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- Prior art keywords
- ldpe
- low density
- density polyethylene
- layer
- increasing
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Classifications
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- 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
- B32B15/00—Layered products comprising a layer of metal
- B32B15/04—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material
- B32B15/12—Layered products comprising a layer of metal comprising metal 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
- B32B15/00—Layered products comprising a layer of metal
- B32B15/20—Layered products comprising a layer of metal comprising aluminium or copper
-
- 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
-
- 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
-
- 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
- B32B33/00—Layered products characterised by particular properties or particular surface features, e.g. particular surface coatings; Layered products designed for particular purposes not covered by another single class
-
- 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
- B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
- B32B7/04—Interconnection of layers
- B32B7/12—Interconnection of layers using interposed adhesives or interposed materials with bonding properties
Landscapes
- Laminated Bodies (AREA)
Abstract
The invention discloses a kind of formulas and its technique for increasing the aluminum extruded compound interlaminar strength of paper, including the cardboard layer set gradually from outside to inside, binder course, aluminium foil layer and composite layer, the composite layer is directly coated on the aluminium foil layer, the composite layer is made of low density polyethylene (LDPE) (LDPE) and metallocene-linear low density polyethylene (M-LLDPE), wherein, the weight ratio of the low density polyethylene (LDPE) (LDPE) and metallocene-linear low density polyethylene (M-LLDPE) is 100:30~100:40.The present invention can be avoided adhesive resin generation pyrolysis in the prior art and cause to corrode to equipment inner flow passage, and material cost is greatly reduced, further reduces the time that worker replaces raw material and cleaning at high temperature, reduces labor intensity while shortening the working time.
Description
Technical field
The present invention relates to a kind of formulas and its technique for increasing the aluminum extruded compound interlaminar strength of paper.
Background technique
Referring to attached drawing 1, existing paper aluminium packaging structure generally utilize Extrusion Coating PE adhesive layer 2 ' bond paper 1 ' and
Aluminium foil layer 3 ' coats the adhesive resin (linea low density of such as modified by maleic acid anhydride graft in the other side of aluminium foil layer 3 ' later
Polyethylene) or glue layer (such as AC agent) 4 ', the adhesive resin or glue layer are Nian Jie with 3 ' surface of aluminium foil layer, utilize heat-sealing later
Layer 5 ' is sealed, this kind of structure is complex and technique is cumbersome, is not conducive to the reduction of production costs and is simplified with technique.
Meanwhile in the prior art, when compound above-mentioned " exPE//AL/ of paper // 1./2. exPE " structure of Extrusion Coating, PE
Usually compound interlaminar strength is lower between AL, easily can remove AL from the face PE with hand, ask to solve or improve this
Topic, people pass through many exploration and research, substantially improve answering between PE layers and AL layers of Extrusion Coating in the following ways
Close interlaminar strength:
1., squeezed out in the equipment that unit or tool squeeze out unit there are two single layer with two layers co-extrusion, close to the side AL
Extruder investment adhesive resin (linear low density polyethylene of such as modified by maleic acid anhydride graft) is Nian Jie with the surface AL, another
Extruder then squeezes out common low density polyethylene (LDPE)；Or there are two single layers to squeeze having two layers of co-extrusion extrusion unit or tool
Out in the equipment of unit, a certain proportion of adhesive resin is blended (such as in PE raw material by the single layer extruder of previous unit
The linear low density polyethylene of modified by maleic acid anhydride graft) it is Nian Jie with the surface AL, another extruder then squeezes out common low close
Spend polyethylene.
At this point, because of adhesive resin price than about three times of common LDPE high, simultaneously as adhesive resin can generate
It is pyrolyzed and corrodes extrusion equipment, so needing to consume a large amount of time and a large amount of LDPE from equipment before production and after production every time
Middle displacement cleans up, and causes the raising of production cost, while worker needs to do raw material replacement operator, work in an environment of high temperature
The labor intensity of people is high.
2, the drawbacks of also someone considers above-mentioned technique, then use and squeeze out compound tense at " paper // 1. exPE//AL " and use
LDPE extrusion is compound, and compound tense is squeezed out at second and is first coated with silane coupling agent (industry is interior to be referred to as AC agent) on the surface AL, by drying tunnel
The drawbacks of Extrusion Coating LDPE is such technique of 2. exPE above again after drying is poor for 1. exPE and AL interlaminar strength, can be with
It peels away easily；Environmental pollution can be caused because silane coupling agent makees diluent using organic solvent by first applying silane coupling agent re-coating LDPE；
Because organic solvent is inflammable and explosive hidden fire-fighting danger；Drying is not thorough the sanitation performances such as the dissolvent residual that can generate packaging material
Problem；It is coated with after silane coupling agent simultaneously and is easy to generate viscous side when Extrusion Coating LDPE on the roller of recombiner unit and causes to give birth to
Production has some setbacks；If squeezing out edge breakage when width control is improper also to generate compound semi-finished product edge Adhesion formation uncoiling to cause
Loss or scrap of the product.
Summary of the invention
In order to solve the above-mentioned technical problem, the purpose of the present invention is to provide a kind of aluminum extruded compound interlaminar strengths of increase paper
Formula and its technique.
The present invention is achieved through the following technical solutions: a kind of formula increasing the aluminum extruded compound interlaminar strength of paper, including
The cardboard layer set gradually from outside to inside, binder course, aluminium foil layer and composite layer, the composite layer are directly coated on the aluminium foil layer
On, the composite layer is made of low density polyethylene (LDPE) (LDPE) and metallocene-linear low density polyethylene (M-LLDPE), wherein
The weight ratio of the low density polyethylene (LDPE) (LDPE) and metallocene-linear low density polyethylene (M-LLDPE) be 100:30~
100:40。
Preferably, the binder course is PE adhesive layer.
Preferably, the binder course is formed with the composite layer using same material.
The present invention also provides a kind of techniques for increasing the aluminum extruded compound interlaminar strength of paper, and steps are as follows: utilizing blender
Low density polyethylene (LDPE) (LDPE) and the stirring of the two kinds of particles shape raw material of metallocene-linear low density polyethylene (M-LLDPE) is equal
It is even；The weight ratio of the low density polyethylene (LDPE) (LDPE) and metallocene-linear low density polyethylene (M-LLDPE) be 100:30~
100:40；It is drawn into extruder using the raw material that automatic feeding device stirs evenly this from blender, the extruder
The processing temperature of resin is arranged between 330--340 DEG C；By raw material from the die head Extrusion Coating of extruder in the aluminium foil layer
On.
Preferably, the die orifice being connected with the runner of the machine barrel of the extruder is offered on the die head, the die orifice
Pressing area between the first roller of face and the second roller.
Preferably, position tangent between first roller and second roller forms a pressing point, the die head
Die orifice to the distance between the pressing point be 18-25cm.
Preferably, the position close to the die orifice is equipped with an assisted heating device being connected to the die head.
Preferably, first roller is cooling wheel, the second tin roller is silica gel roller.
The present invention can be avoided existing skill by increasing the formula of the aluminum extruded compound interlaminar strength of paper and its improvement of technique
Adhesive resin generates pyrolysis and causes to corrode to equipment inner flow passage in art, meanwhile, the adhesive resin avoided in equipment is raw
Displacement after antenatal and production, cleaning are greatly saved material, further reduce worker and replace raw material and cleaning at high temperature
Time, reduce labor intensity while shortening the working time.In addition, this kind of mode is also without generating environmentally harmful row
It puts, eliminates inflammable and explosive hidden fire-fighting danger, while influencing the hidden danger of Environmental security, safety and environmental protection without generating solvent residues
Property is further enhanced.
Detailed description of the invention
It, below will be to required in embodiment or description of the prior art in order to illustrate more clearly of technical solution of the present invention
The attached drawing used is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the invention, right
For those of ordinary skill in the art, without creative efforts, it can also be obtained according to these attached drawings
Its attached drawing.
Fig. 1 is the folded structure schematic diagram of the prior art.
Fig. 2 is folded composition of the invention.
Fig. 3 is the structural schematic diagram of extruder of the present invention.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, carries out to the technical solution in inventive embodiments clear, complete
Ground description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.Based on this
The embodiment of invention, those of ordinary skill in the art's every other reality obtained without making creative work
Example is applied, shall fall within the protection scope of the present invention.
A kind of reference book attached drawing 1, formula increasing the aluminum extruded compound interlaminar strength of paper, is followed successively by cardboard from outside to inside
Layer 1, binder course 2, aluminium foil layer 3 and 4 extrusion cladding of composite layer are into a single integrated structure, which is directly coated on the aluminium foil
The outside of layer 3；The binder course 2 can be PE adhesive layer, through extruder Extrusion Coating between 3 inside of cardboard layer 1 and aluminium foil layer,
So that cardboard layer 1 and aluminium foil layer 3 are bonded, certain binder course 2 can also be formed with the composite layer 4 using same material.
Specifically, which is to utilize low density polyethylene (LDPE) (LDPE) and metallocene-linear low density polyethylene (M-LLDPE)
Made of configuring in certain proportion, the low density polyethylene (LDPE) (LDPE) and metallocene-linear low density polyethylene (M-LLDPE)
Weight ratio are as follows: 100:30≤LDPE:M-LLDPE≤100:40, and then compound interlayer can be enhanced using the characteristic of M-LLDPE
Intensity；In addition, the composite layer is integrated with the characteristic of both adhesive layer and hot sealing layer in the prior art simultaneously, both make itself and aluminium
The adhesive strength of layers of foil enhances, and the processing step of hot sealing layer coating is omitted.
The experiment proved that the interlayer between aluminium foil layer is strong after the composite layer carries out Extrusion Coating using above-mentioned raw materials
Du≤1.5N/15mm can satisfy the performance requirement of subsequent packages materials'use completely.Wherein, if the low density polyethylene (LDPE)
(LDPE) and the weight ratio of metallocene-linear low density polyethylene (M-LLDPE) is less than 100:30, then will lead to its layers cementing
Intensity is on the weak side, is easy to be stripped；If the low density polyethylene (LDPE) (LDPE) and metallocene-linear low density polyethylene (M-LLDPE)
Weight ratio be greater than 100:40 and then will lead to its processability variation and such as squeeze out in uneven thickness, edge thickness is uneven etc..
It, will first with special blender when needing to coat the composite layer 4 on the aluminium foil layer 3 in production technology
Low density polyethylene (LDPE) (LDPE) and the two kinds of particles shape raw material of metallocene-linear low density polyethylene (M-LLDPE) stir in proportion
It mixes uniformly, is then drawn into extruder using the raw material that automatic feeding device stirs evenly this from blender, the extruder
On the processing temperature of resin be arranged between 330--340 DEG C, referring to attached drawing 2, which includes machine barrel 51 interconnected
With die head 52, it is provided with runner in the die head 52, and by being connected inside runner and the machine barrel 51, is offered on the die head 52
The die orifice being connected with runner, the pressing area between die orifice face first roller 31 and the second roller 32,31 He of the first roller
Tangent position forms a pressing point 3a between second roller 32, which can be cooling wheel, which can
For silica gel roller；Preferably, adjustment extruder processing air gap distance be 18--25cm, i.e., the die orifice of die head 52 to press point 3a it
Between distance be 18-25cm.
Further, an auxiliary heating dress being connected to the die head is equipped in the position of the die orifice close to the die head 52
It sets, the material surface which is capable of the convection current molten condition that goes out die orifice heat and high-temperature oxydation, the auxiliary
Heating device can be higher than the die head temperature with persistent fever and temperature, carry out while playing heating to the LDPE film of extrusion high
Temperature oxidation, since 52 self-temperature of die head also acts as the important function of thickness uniformity in adjusting breadth other than guaranteeing processability
Can, so cannot only modify die head temperature removes enhancing Hot Tack strength, and by increasing the installation auxiliary heating system, can both it increase
Strong Hot Tack strength, and will not influence thickness uniformity, it is thus possible to guarantee the performance of product.In this way, in addition to the mould of the extruder
Head itself has heated raw material, and the material that die orifice is further gone out by increasing assisted heating device convection current add again
Heat heat preservation, while surface oxidation is carried out, play the role of auxiliary and increase Hot Tack strength, so that each interlaminar strength increases.Pass through
Increase the formula of the aluminum extruded compound interlaminar strength of paper and its improvement of technique, can be avoided adhesive resin generation in the prior art
Pyrolysis causes to corrode to equipment inner flow passage, meanwhile, the preceding displacement with after production of adhesive resin production in equipment is avoided,
Cleaning, is greatly saved material, further reduces the time that worker replaces raw material and cleaning at high temperature, and it is strong to reduce labour
It spends while shortening the working time.In addition, this kind of mode eliminates inflammable and explosive disappear also without generating environmentally harmful discharge
Anti- hidden danger, while the hidden danger of Environmental security is influenced without generating solvent residues, safety and the feature of environmental protection are further enhanced.
Test discovery, same process condition by contrast, open the assisted heating device, composite layer and substrate (aluminium foil layer 3)
Between peel strength compared to closing under the assisted heating device state, peel strength between the two differs 1.0 newton or so,
As it can be seen that increasing the assisted heating device, interfacial bonding strength can be further increased.Under the collective effect of above scheme, paper
The combined strength bination of aluminium packaging material can satisfy the interlaminar strength requirement that packaging material finally uses and comprehensive mechanical property requirements, work
Skill is easy, raw material and low processing cost, and the drawbacks of avoid current technology processes.
The preferred embodiment of the present invention has shown and described in above description, as previously described, it should be understood that the present invention is not office
Be limited to form disclosed herein, should not be regarded as an exclusion of other examples, and can be used for various other combinations, modification and
Environment, and can be changed within that scope of the inventive concept describe herein by the above teachings or related fields of technology or knowledge
It is dynamic.And changes and modifications made by those skilled in the art do not depart from the spirit and scope of the present invention, then it all should be appended by the present invention
In scope of protection of the claims.
Claims (8)
1. a kind of formula for increasing the aluminum extruded compound interlaminar strength of paper, which is characterized in that including the paper set gradually from outside to inside
Plate layer, binder course, aluminium foil layer and composite layer, the composite layer are directly coated on the aluminium foil layer, and the composite layer is by low close
It spends polyethylene (LDPE) and metallocene-linear low density polyethylene (M-LLDPE) is constituted, wherein the low density polyethylene (LDPE)
(LDPE) and the weight ratio of metallocene-linear low density polyethylene (M-LLDPE) is 100:30~100:40.
2. a kind of formula for increasing the aluminum extruded compound interlaminar strength of paper according to claim 1, which is characterized in that the knot
Conjunction layer is PE adhesive layer.
3. a kind of formula for increasing the aluminum extruded compound interlaminar strength of paper according to claim 1, which is characterized in that the knot
It closes layer and is formed with the composite layer using same material.
4. a kind of technique for increasing the aluminum extruded compound interlaminar strength of paper, which is characterized in that steps are as follows:
Using blender by two kinds of low density polyethylene (LDPE) (LDPE) and metallocene-linear low density polyethylene (M-LLDPE)
Granular feedstock stirs evenly；The weight of the low density polyethylene (LDPE) (LDPE) and metallocene-linear low density polyethylene (M-LLDPE)
Amount is than being 100:30~100:40；
It is drawn into extruder using the raw material that automatic feeding device stirs evenly this from blender, the resin of the extruder
Processing temperature be arranged between 330--340 DEG C；
By raw material from the die head Extrusion Coating of extruder on the aluminium foil layer.
5. a kind of technique for increasing the aluminum extruded compound interlaminar strength of paper according to claim 4, which is characterized in that the mould
The die orifice being connected with the runner of the machine barrel of the extruder, first roller of die orifice face and the second roller are offered on head
Between pressing area.
6. a kind of technique for increasing the aluminum extruded compound interlaminar strength of paper according to claim 5, which is characterized in that described the
Tangent position forms a pressing point between one roller and second roller, and the die orifice of the die head is between the pressing point
Distance be 18-25cm.
7. a kind of technique for increasing the aluminum extruded compound interlaminar strength of paper according to claim 5, which is characterized in that close to institute
The position for stating die orifice is equipped with an assisted heating device being connected to the die head.
8. a kind of technique for increasing the aluminum extruded compound interlaminar strength of paper according to claim 5, which is characterized in that described the
One roller is cooling wheel, and the second tin roller is silica gel roller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910567744.4A CN110293734A (en) | 2019-06-27 | 2019-06-27 | A kind of formula and its technique increasing the aluminum extruded compound interlaminar strength of paper |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910567744.4A CN110293734A (en) | 2019-06-27 | 2019-06-27 | A kind of formula and its technique increasing the aluminum extruded compound interlaminar strength of paper |
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| CN110293734A true CN110293734A (en) | 2019-10-01 |
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| CN201910567744.4A Pending CN110293734A (en) | 2019-06-27 | 2019-06-27 | A kind of formula and its technique increasing the aluminum extruded compound interlaminar strength of paper |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111961369A (en) * | 2020-07-08 | 2020-11-20 | 厦门三玺包装材料有限公司 | Formula and process for extruding and coating covering material easy to seal and tear off polyethylene container |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104760361A (en) * | 2012-12-31 | 2015-07-08 | 台州市珠叶机械科技有限公司 | Packaging container |
-
2019
- 2019-06-27 CN CN201910567744.4A patent/CN110293734A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104760361A (en) * | 2012-12-31 | 2015-07-08 | 台州市珠叶机械科技有限公司 | Packaging container |
Non-Patent Citations (2)
| Title |
|---|
| 唐万有等: "《印后加工技术（第二版）》", 30 June 2016, 中国轻工业出版社 * |
| 贾润礼等: "《新型塑料挤出机头设计》", 31 January 2007, 国防工业出版社 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111961369A (en) * | 2020-07-08 | 2020-11-20 | 厦门三玺包装材料有限公司 | Formula and process for extruding and coating covering material easy to seal and tear off polyethylene container |
| CN111961369B (en) * | 2020-07-08 | 2022-08-19 | 厦门三玺包装材料有限公司 | Formula and process for extruding and coating covering material easy to seal and tear off polyethylene container |
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