CN109094160A - A kind of FFS packaging film and preparation method thereof - Google Patents
A kind of FFS packaging film and preparation method thereof Download PDFInfo
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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
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/32—Layered products comprising a layer of synthetic resin comprising polyolefins
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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
- 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
- B32B27/08—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 synthetic resin
-
- 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
- B32B27/18—Layered products comprising a layer of synthetic resin characterised by the use of special additives
-
- 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
- B32B27/18—Layered products comprising a layer of synthetic resin characterised by the use of special additives
- B32B27/20—Layered products comprising a layer of synthetic resin characterised by the use of special additives using fillers, pigments, thixotroping agents
-
- 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
- B32B2250/00—Layers arrangement
- B32B2250/24—All layers being polymeric
- B32B2250/242—All polymers belonging to those covered by group B32B27/32
-
- 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
- B32B2307/00—Properties of the layers or laminate
- B32B2307/50—Properties of the layers or laminate having particular mechanical properties
- B32B2307/54—Yield strength; Tensile strength
-
- 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
- B32B2307/00—Properties of the layers or laminate
- B32B2307/50—Properties of the layers or laminate having particular mechanical properties
- B32B2307/582—Tearability
-
- 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
- B32B2307/00—Properties of the layers or laminate
- B32B2307/70—Other properties
- B32B2307/746—Slipping, anti-blocking, low friction
-
- 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
- B32B2553/00—Packaging equipment or accessories not otherwise provided for
Abstract
The present invention provides a kind of FFS packaging films and preparation method thereof.FFS packaging film of the invention, it is (1~2): (1~3) including the weight ratio that sets gradually from outside to inside: 1 outer layer, middle layer, internal layer three parts, wherein, by weight, outer layer includes 30~40 parts of LDPE 2420H and 60~70 parts of LLDPE LL0220AA；Middle layer includes 30~40 parts of LDPE 2426H and 60~70 parts of LLDPE LL0220AA；Internal layer includes the smooth master batch of 30~40 parts of LDPE 2426H, 60~70 parts of LLDPE 1002BU, 1~2 part of opening agent 10063 and 1~2 part.The preparation method of FFS packaging film of the invention, simple production process, device requirement are not harsh, at low cost, high-efficient, and film obtained has good mechanical property and surface friction property, and adhesion when use.
Description
Technical field
The invention belongs to pack technical field of membrane, it is related to a kind of packaging film and preparation method thereof more particularly to a kind of FFS packet
Fill film and preparation method thereof.
Background technique
FFS (Form-Fill-Seal) three-layer co-extruded multilayer packing membrane is a kind of domestic novel package to grow up in recent years
Material, since it can be realized disposable automatic moulding (Form), automatic open charge (Fill) and the heating sealing of automatic sack
(Seal) multiple working procedure high speed is worked continuously, especially suitable for large batch of industrialization high-speed packet wiring.
In order to guarantee multilayer packing membrane mechanical strength with higher and heat seal strength, multilayer packing membrane usually select hexene or
The linear low density polyethylene of the metallocene linear-low density polyethylene resin (m-LLDP) of octene copolymer, hexene or octene copolymer
Olefine resin (LLDPE), the ldpe resin (LDPE) of homopolymerization and the high-density polyethylene resin of butene
(HDPE) mixture is made.Not only raw material is more for existing multilayer packing membrane formula, and the multilayer packing membrane intensity prepared is undesirable.Also there is choosing
With the linear low density polyethylene resin (m-LLDPE) of a large amount of hexenes or octene copolymer, the ldpe resin of homopolymerization
(LDPE) with the high-density polyethylene resin of butene (HDPE) mixture be made, but multilayer packing membrane obtained due to intensity it is higher
LLDPE, m-LLDPE and rigidity biggish HDPE equipment processing ability is required it is harsh, it is difficult to production is widely applied, and current
Common solution is LDPE to be added to improve the working ability of whole raw material, however the addition of LDPE is greatly reduced and packed again
Film-strength reduces the economic value of product.
CN103059402A discloses a kind of FFS single layer multilayer packing membrane and preparation method thereof, by using ethyl vinyl acetate second
Enoate copolymer, metallocene linear-low density polyethylene and ultra-low density polyethylene improve the mechanics of FFS single layer multilayer packing membrane
Performance；CN103029388A discloses a kind of three-layer co-extruded multilayer packing membrane and preparation method thereof, and by selecting m- appropriate
LLDPE, MDPE (medium density polyethylene) and EVA (ethylene-vinyl acetate copolymer) raw material improve three-layer co-extruded multilayer packing membrane
Mechanical property, the surface friction property of heat sealability and film, but above-mentioned patent obtain FFS single layer multilayer packing membrane reprocessing
It is also easy to produce adhesion in the process.
CN102452204A disclose it is a kind of it is heavy be packed for FFS film, with three-decker, wherein outer layer: middle layer: interior
The thickness ratio of layer is between 1:1:1 between 1:3:1；Outer layer m-LLDPE containing there are two types of, matches by a certain percentage with LDPE,
A certain amount of processing aid, antistatic agent etc. can also be added；1 kind of m-LLDPE is contained in middle layer, presses one with HDPE, LDPE, titanium white
Certainty ratio proportion；Internal layer contains 2 kinds of m-LLDPE, matches by a certain percentage with LDPE, and a certain amount of processing can also be added and help
Agent, opening agent etc.；M-LLDPE involved in the invention is hervene copolymer m-LLDPE.This is heavy to be packed for what FFS film used
LDPE amount is more, influences the integral strength of film, meanwhile, HDPE needs to buy subscription specific equipment, no to equipment requirement harshness
It increases only the production cost of multilayer packing membrane and producting process difficulty is big, it is difficult to promote the use of.
Therefore it provides a kind of surface friction property and FFS easy to process simultaneously with excellent mechanical property and film
Packaging film is necessary.
Summary of the invention
In view of the deficiencies of the prior art, the purpose of the present invention is to provide a kind of FFS packaging films and preparation method thereof, are made
FFS packaging film, adhesion when use, the surface friction property with good mechanical property and film.
To achieve this purpose, the present invention adopts the following technical scheme:
One of the objects of the present invention is to provide a kind of FFS packaging film, the FFS packaging film includes successively setting from outside to inside
The outer layer set, middle layer, internal layer three parts, the outer layer, middle layer, internal layer weight ratio be (1~2): (1~3): 1, wherein press
Parts by weight meter,
The outer layer includes 30~40 parts of LDPE 2420H and 60~70 parts of LLDPE LL0220AA；
The middle layer includes 30~40 parts of LDPE 2426H and 60~70 parts of LLDPE LL0220AA；
The internal layer includes 30~40 parts of LDPE 2426H, 60~70 parts of LLDPE 1002BU, 1~2 part of opening
The smooth master batch of agent 10063 and 1~2 part.
In the present invention, using three layers of different material, and by adjusting every layer of ratio, makes FFS packaging film obtained, make
Used time adhesion, the surface friction property with good mechanical property and film；Wherein, outer layer using LDPE 2420H and
LLDPE LL0220AA is raw material, and middle layer uses LDPE 2426H and LLDPE LL0220AA for raw material, and by adjusting above-mentioned
The dosage of raw material improves the mechanical property of film, and internal layer is using LDPE 2426H, LLDPE 1002BU, opening agent 10063 and slides
Refreshing master batch is raw material, and by adjusting the dosage of above-mentioned raw materials, and film is made to have a good processing performance, and when processing and use does not glue
Even, the frictional behaviour with FFS packaging film obtained.
Specifically, by weight, the outer layer includes 30~40 parts of LDPE 2420H and 60~70 parts of LLDPE
LL0220AA, such as the parts by weight of LDPE 2420H are 30 parts, 31 parts, 32 parts, 33 parts, 34 parts, 35 parts, 36 parts, 37 parts, 38
Part, 39 parts, 40 parts, the parts by weight of LLDPE LL0220AA are 60 parts, 61 parts, 62 parts, 63 parts, 64 parts, 65 parts, 66 parts, 67 parts,
68 parts, 69 parts, 70 parts.
The middle layer includes 30~40 parts of LDPE 2426H and 60~70 parts of LLDPE LL0220AA, such as LDPE
The parts by weight of 2426H are 30 parts, 31 parts, 32 parts, 33 parts, 34 parts, 35 parts, 36 parts, 37 parts, 38 parts, 39 parts, 40 parts, LLDPE
The parts by weight of LL0220AA are 60 parts, 61 parts, 62 parts, 63 parts, 64 parts, 65 parts, 66 parts, 67 parts, 68 parts, 69 parts, 70 parts.
The internal layer includes 30~40 parts of LDPE 2426H, 60~70 parts of LLDPE 1002BU, 1~2 part of opening
The smooth master batch of agent 10063 and 1~2 part, such as the parts by weight of LDPE 2426H are 30 parts, 31 parts, 32 parts, 33 parts, 34 parts, 35
Part, 36 parts, 37 parts, 38 parts, 39 parts, 40 parts, the parts by weight of LLDPE 1002BU are 60 parts, 61 parts, 62 parts, 63 parts, 64 parts, 65
Part, 66 parts, 67 parts, 68 parts, 69 parts, 70 parts, the parts by weight of opening agent 10063 are 1 part, 1.1 parts, 1.2 parts, 1.3 parts, 1.4 parts,
1.5 parts, 1.6 parts, 1.7 parts, 1.8 parts, 1.9 parts, 2 parts, the parts by weight of smooth master batch are 1 part, 1.1 parts, 1.2 parts, 1.3 parts, 1.4
Part, 1.5 parts, 1.6 parts, 1.7 parts, 1.8 parts, 1.9 parts, 2 parts.
In the present invention, the outer layer, middle layer, internal layer weight ratio be (1~2): (1~3): 1, such as outer layer, middle layer, interior
The weight ratio of layer is 1:1:1,1:2:1,1:3:1,2:1:1,2:2:1,2:3:1 etc..
By weight, the outer layer includes 30~35 parts of LDPE 2420H and 65~70 parts of LLDPE
LL0220AA, such as the parts by weight of LDPE 2420H are 30 parts, 31 parts, 32 parts, 33 parts, 34 parts, 35 parts, LLDPE LL0220AA
Parts by weight be 65 parts, 66 parts, 67 parts, 68 parts, 69 parts, 70 parts.
By weight, the outer layer includes 33 parts of LDPE 2420H and 67 parts of LLDPE LL0220AA.
By weight, the middle layer includes 30~35 parts of LDPE 2426H and 65~70 parts of LLDPE
LL0220AA, such as the parts by weight of LDPE 2426H are 30 parts, 31 parts, 32 parts, 33 parts, 34 parts, 35 parts, LLDPE LL0220AA
Parts by weight be 65 parts, 66 parts, 67 parts, 68 parts, 69 parts, 70 parts.
By weight, the middle layer includes 33 parts of LDPE 2426H and 67 parts of LLDPE LL0220AA.
By weight, the internal layer includes 30~35 parts of LDPE 2426H, 65~70 parts of LLDPE 1002BU, 1
The smooth master batch of~1.5 parts of opening agent 10063 and 1~1.5 part, such as the parts by weight of LDPE 2426H are 30 parts, 31 parts, 32
Part, 33 parts, 34 parts, 35 parts, the parts by weight of LLDPE 1002BU are 65 parts, 66 parts, 67 parts, 68 parts, 69 parts, 70 parts, opening agent
10063 parts by weight are 1 part, 1.1 parts, 1.2 parts, 1.3 parts, 1.4 parts, 1.5 parts, the parts by weight of smooth master batch are 1 part, 1.1 parts,
1.2 parts, 1.3 parts, 1.4 parts, 1.5 parts.
By weight, the internal layer include 33 parts of LDPE 2426H, 67 parts of LLDPE 1002BU, 1.2 parts open
The smooth master batch of mouth agent 10063 and 1.2 part.
The addition of smooth master batch can effectively avoid the adhesion of film, it is preferable that the smooth master batch is smooth master batch 505E.
The second object of the present invention is to provide a kind of preparation method of FFS packaging film as described in the first purpose, including
Following steps:
1) mixing: preparing the outer layer of formula ratio to be delivered to be kneaded in extruder after raw material mixes and obtain outer layer raw material and mix
Close object, by the middle layer of formula ratio prepare raw material mix after be delivered in extruder be kneaded obtain middle layer raw mixture, will match
The internal layer just measured prepare raw material mixing after be delivered in extruder be kneaded obtain internal layer raw mixture；
2) ingredient: by the outer layer raw mixture, middle layer raw mixture, internal layer raw mixture of step 1) preparation by matching
Than carrying out ingredient；
3) film extrusion: being delivered to extrusion molding in three-layer co-extruded extruder simultaneously for the membrane material after step 2) ingredient,
Obtain the FFS packaging film.
Preferably, the preparation method comprises the following steps:
1) mixing: preparing the outer layer of formula ratio to be delivered to be kneaded in extruder after raw material mixes and obtain outer layer raw material and mix
Close object, by the middle layer of formula ratio prepare raw material mix after be delivered in extruder be kneaded obtain middle layer raw mixture, will match
The internal layer just measured prepare raw material mixing after be delivered in extruder be kneaded obtain internal layer raw mixture；Wherein, the extrusion
The extruder temperature of machine is 120~150 DEG C, and head temperature is 130~160 DEG C, and screw speed is 20~50r/min, the pressure of extrusion
Power is 20~40MPa；Such as the extruder temperature of extruder be 120 DEG C, 130 DEG C, 140 DEG C, 150 DEG C, head temperature be 130 DEG C,
140 DEG C, 150 DEG C 160 DEG C, screw speed 20r/min, 25r/min, 30r/min, 35r/min, 40r/min, 45r/min,
50r/min, the pressure of extrusion is 20MPa, 21MPa, 22MPa, 23MPa, 24MPa, 25MPa, 26MPa, 27MPa, 28MPa,
29MPa,30MPa,31MPa,32MPa,33MPa,34MPa,35MPa,36MPa,37MPa,38MPa,39MPa,40MPa；
2) ingredient: by the outer layer raw mixture, middle layer raw mixture, internal layer raw mixture of step 1) preparation by matching
Than carrying out ingredient；
3) film extrusion: being delivered to extrusion molding in three-layer co-extruded extruder simultaneously for the membrane material after step 2) ingredient,
Obtain the FFS packaging film.
Compared with prior art, the invention has the benefit that
(1) FFS packaging film of the invention is selected three layers of different material and the ratio by adjusting every layer, is made obtained
Film has good mechanical property and surface friction property, and adhesion when use；The stretching for the FFS packaging film being prepared is strong
Degree is 65MPa or more, and elongation at break is 600% or more, and tearing strength is in 125kN/m or more, and coefficient of friction is 0.3~0.6
Between, when use, will not adhesion.
(2) preparation method of FFS packaging film of the invention, simple production process, device requirement be harsh, at low cost, effect
Rate is high.
Specific embodiment
The technical scheme of the invention is further explained by means of specific implementation.
Unless specific instructions, various raw materials of the invention are commercially available buys, or is prepared according to the conventional method of this field
It obtains.
Embodiment 1
A kind of FFS packaging film of the present embodiment, the FFS packaging film include the outer layer set gradually from outside to inside, middle layer,
Internal layer three parts, the outer layer, middle layer, internal layer weight ratio be 1:2:1, wherein by weight,
The outer layer includes 33 parts of LDPE 2420H and 67 parts of LLDPE LL0220AA；
The middle layer includes 37 parts of LDPE 2426H and 67 parts of LLDPE LL0220AA；
The internal layer includes 33 parts of LDPE 2426H, 67 parts of LLDPE 1002BU, 1.2 parts of 10063 and of opening agent
1.2 parts of smooth master batch.
The preparation method of the FFS packaging film of the present embodiment, comprising the following steps:
1) mixing: by the outer layer of above-mentioned formula ratio prepare raw material mix after be delivered in extruder be kneaded obtain outer layer original
Expect mixture, by the middle layer of formula ratio prepare raw material mix after be delivered in extruder be kneaded obtain middle layer raw mixture,
By the internal layer of formula ratio prepare raw material mix after be delivered in extruder be kneaded obtain internal layer raw mixture；Wherein, described
The extruder temperature of extruder is 130 DEG C, and head temperature is 140 DEG C, screw speed 40r/min, and the pressure of extrusion is 30MPa；
2) ingredient: by the outer layer raw mixture, middle layer raw mixture, internal layer raw mixture of step 1) preparation by matching
Than carrying out ingredient；
3) film extrusion: being delivered to extrusion molding in three-layer co-extruded extruder simultaneously for the membrane material after step 2) ingredient,
Obtain the FFS packaging film.
Embodiment 2
A kind of FFS packaging film of the present embodiment, the FFS packaging film include the outer layer set gradually from outside to inside, middle layer,
Internal layer three parts, the outer layer, middle layer, internal layer weight ratio be 2:3:1, wherein by weight,
The outer layer includes 30 parts of LDPE 2420H and 70 parts of LLDPE LL0220AA；
The middle layer includes 30 parts of LDPE 2426H and 70 parts of LLDPE LL0220AA；
The internal layer includes 30 parts of LDPE 2426H, 65 parts of LLDPE 1002BU, 1.5 parts of opening agent 10063 and 2
The smooth master batch of part.
The preparation method of the FFS packaging film of the present embodiment is same as Example 1, and details are not described herein.
Embodiment 3
A kind of FFS packaging film of the present embodiment, the FFS packaging film include the outer layer set gradually from outside to inside, middle layer,
Internal layer three parts, the outer layer, middle layer, internal layer weight ratio be 1:3:1, wherein by weight,
The outer layer includes 40 parts of LDPE 2420H and 65 parts of LLDPE LL0220AA；
The middle layer includes 35 parts of LDPE 2426H and 65 parts of LLDPE LL0220AA；
The internal layer includes 40 parts of LDPE 2426H, 62 parts of LLDPE 1002BU, 2 parts of opening agent 10063 and 1 part
Smooth master batch.
The preparation method of the FFS packaging film of the present embodiment is same as Example 1, and details are not described herein.
Embodiment 4
A kind of FFS packaging film of the present embodiment, the FFS packaging film include the outer layer set gradually from outside to inside, middle layer,
Internal layer three parts, the outer layer, middle layer, internal layer weight ratio be 2:1:1, wherein by weight,
The outer layer includes 32 parts of LDPE 2420H and 68 parts of LLDPE LL0220AA；
The middle layer includes 36 parts of LDPE 2426H and 66 parts of LLDPE LL0220AA；
The internal layer includes 35 parts of LDPE 2426H, 70 parts of LLDPE 1002BU, 1 part of opening agent 10063 and 1 part
Smooth master batch.
The preparation method of the FFS packaging film of the present embodiment is same as Example 1, and details are not described herein.
Embodiment 5
A kind of FFS packaging film of the present embodiment, the FFS packaging film include the outer layer set gradually from outside to inside, middle layer,
Internal layer three parts, the outer layer, middle layer, internal layer weight ratio be 1:2:1, wherein by weight,
The outer layer includes 40 parts of LDPE 2420H and 70 parts of LLDPE LL0220AA；
The middle layer includes 35 parts of LDPE 2426H and 70 parts of LLDPE LL0220AA；
The internal layer includes 40 parts of LDPE 2426H, 70 parts of LLDPE 1002BU, 2 parts of opening agent 10063 and 2 part
Smooth master batch.
The preparation method of the FFS packaging film of the present embodiment is same as Example 1, and details are not described herein.
Comparative example 1
This comparative example difference from example 1 is that, outer layer, middle layer, internal layer raw material be LDPE2420H,
His is same as Example 1.
Comparative example 2
This comparative example difference from example 1 is that, outer layer, middle layer, internal layer raw material be LDPE2426H,
His is same as Example 1.
Comparative example 3
This comparative example difference from example 1 is that, do not contain opening agent 10063 in internal layer, it is other with reality
It is identical to apply example 1.
Comparative example 4
This comparative example difference from example 1 is that, do not contain smooth master batch in internal layer, it is other and embodiment
1 is identical.
Embodiment 1-5 and FFS packaging film made from comparative example 1-4 are tested for the property, test result is as shown in table 1.
Table 1
As can be seen from Table 1, relatively with comparative example 1-4, FFS packaging film of the invention, three layers of different material of selection are simultaneously
By adjusting every layer of ratio, adhesion when making film obtained that there is good mechanical property and surface friction property, and using；
The tensile strength for the FFS packaging film being prepared is 65MPa or more, and 600% or more, tearing strength exists elongation at break
125kN/m or more, for coefficient of friction between 0.3~0.6, when use, will not adhesion adhesion.The preparation of FFS packaging film of the invention
Method, simple production process, device requirement are not harsh, at low cost, high-efficient.
Detailed process equipment and process flow of the invention that the present invention is explained by the above embodiments, but the present invention is not
It is confined to above-mentioned detailed process equipment and process flow, that is, does not mean that the present invention must rely on above-mentioned detailed process equipment and work
Skill process could be implemented.It should be clear to those skilled in the art, any improvement in the present invention, to product of the present invention
The equivalence replacement of each raw material and addition, the selection of concrete mode of auxiliary element etc., all fall within protection scope of the present invention and public affairs
Within the scope of opening.
Claims (10)
1. a kind of FFS packaging film, which is characterized in that the FFS packaging film include the outer layer set gradually from outside to inside, middle layer,
Internal layer three parts, the outer layer, middle layer, internal layer weight ratio be (1~2): (1~3): 1, wherein by weight,
The outer layer includes 30~40 parts of LDPE 2420H and 60~70 parts of LLDPE LL0220AA；
The middle layer includes 30~40 parts of LDPE 2426H and 60~70 parts of LLDPE LL0220AA；
The internal layer includes 30~40 parts of LDPE 2426H, 60~70 parts of LLDPE 1002BU, 1~2 part of opening agent
10063 and 1~2 parts of smooth master batch.
2. FFS packaging film according to claim 1, which is characterized in that the outer layer, middle layer, internal layer weight ratio be 1:
2:1。
3. FFS packaging film according to claim 1 or 2, which is characterized in that by weight, the outer layer include 30~
35 parts of LDPE 2420H and 65~70 parts of LLDPE LL0220AA.
4. FFS packaging film described in one of -3 according to claim 1, which is characterized in that by weight, the outer layer includes 33
The LDPE 2420H and 67 parts of LLDPE LL0220AA of part.
5. FFS packaging film described in one of -4 according to claim 1, which is characterized in that by weight, the middle layer includes 30
~35 parts of LDPE 2426H and 65~70 parts of LLDPE LL0220AA.
6. FFS packaging film described in one of -5 according to claim 1, which is characterized in that by weight, the middle layer includes 33
The LDPE 2426H and 67 parts of LLDPE LL0220AA of part.
7. FFS packaging film described in one of -6 according to claim 1, which is characterized in that by weight, the internal layer includes 30
The cunning of~35 parts of LDPE 2426H, 65~70 parts of LLDPE 1002BU, 1~1.5 part of opening agent 10063 and 1~1.5 part
Refreshing master batch.
8. FFS packaging film described in one of -7 according to claim 1, which is characterized in that by weight, the internal layer includes 33
Part LDPE 2426H, 67 parts of LLDPE 1002BU, 1.2 parts of opening agent 10063 and 1.2 part smooth master batch.
9. FFS packaging film described in one of -8 according to claim 1, which is characterized in that the smooth master batch is smooth master batch
505E。
10. a kind of preparation method of FFS packaging film as claimed in one of claims 1 to 9, which is characterized in that the preparation method
The following steps are included:
1) mixing: by the outer layer of formula ratio prepare raw material mix after be delivered in extruder be kneaded obtain outer layer raw material mix
Object, by the middle layer of formula ratio prepare raw material mix after be delivered in extruder be kneaded obtain middle layer raw mixture, will be formulated
The internal layer of amount prepare raw material mixing after be delivered in extruder be kneaded obtain internal layer raw mixture；
2) ingredient: by step 1) preparation outer layer raw mixture, middle layer raw mixture, internal layer raw mixture according to the ratio into
Row ingredient；
3) film extrusion: the membrane material after step 2) ingredient is delivered to extrusion molding in three-layer co-extruded extruder simultaneously, is obtained
The FFS packaging film.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111016371A (en) * | 2019-12-31 | 2020-04-17 | 诚德科技股份有限公司 | High-strength polyethylene composite film and preparation method thereof |
| CN116252534A (en) * | 2023-02-28 | 2023-06-13 | 中天科盛科技股份有限公司 | High-load FFS packaging film and preparation method thereof |
| CN116252534B (en) * | 2023-02-28 | 2024-04-26 | 中天科盛科技股份有限公司 | High-load FFS packaging film and preparation method thereof |
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| CN116252534A (en) * | 2023-02-28 | 2023-06-13 | 中天科盛科技股份有限公司 | High-load FFS packaging film and preparation method thereof |
| CN116252534B (en) * | 2023-02-28 | 2024-04-26 | 中天科盛科技股份有限公司 | High-load FFS packaging film and preparation method thereof |
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