CN108859263A - A kind of manufacturing method of interior viscid film plastic woven bag - Google Patents
A kind of manufacturing method of interior viscid film plastic woven bag Download PDFInfo
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- CN108859263A CN108859263A CN201810499116.2A CN201810499116A CN108859263A CN 108859263 A CN108859263 A CN 108859263A CN 201810499116 A CN201810499116 A CN 201810499116A CN 108859263 A CN108859263 A CN 108859263A
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- woven bag
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
- B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
- B31B70/00—Making flexible containers, e.g. envelopes or bags
- B31B70/74—Auxiliary operations
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C55/00—Shaping by stretching, e.g. drawing through a die; Apparatus therefor
- B29C55/28—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of blown tubular films, e.g. by inflation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
- B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
- B31B70/00—Making flexible containers, e.g. envelopes or bags
- B31B70/60—Uniting opposed surfaces or edges; Taping
- B31B70/64—Uniting opposed surfaces or edges; Taping by applying heat or pressure
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
- B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
- B31B70/00—Making flexible containers, e.g. envelopes or bags
- B31B70/74—Auxiliary operations
- B31B70/88—Printing; Embossing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
- B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
- B31B2155/00—Flexible containers made from webs
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
- B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
- B31B2170/00—Construction of flexible containers
- B31B2170/20—Construction of flexible containers having multi-layered walls, e.g. laminated or lined
Abstract
The present invention provides a kind of manufacturing method of interior viscid film plastic woven bag, and interior mucous membrane woven bag includes successively from outside to inside polypropylene woven bag, eva film layer and film layer, includes the following steps：S1：Drying is blended in raw material；S2：Drawing process；S3：Foam process；S4：It is blow molded into mucous membrane in columnar two layers after heating in double-layer coextrusion inflation film machine, melting is added in EVA80%-90%, foaming agent 10%-20% again, wherein outer layer is eva film layer, and internal layer is polyethylene foamed film layer；S5：Knitting process；S6：Compound working procedure；S7：Bag making.The manufacturing method of good, good water insulation effect the interior viscid film plastic woven bag of the permeability that the purpose of the present invention is to provide a kind of for containing the beings such as fruit, seed, sapling.
Description
Technical field
The present invention relates to Polywoven Bag processing technique field, in particular to a kind of manufacturer of interior viscid film plastic woven bag
Method.
Background technique
Polywoven Bag is to form using polypropylene as primary raw material by extrusion, wire drawing, then through weaving, braiding, bag making.
Polywoven Bag, which is often used in, contains the object that flour, seed, sugar, fruits and vegetables, sapling, fertilizer, chemical reagent etc. cannot make moist
Matter, so polybag is needed to have one layer of waterproof and dampproof interior mucous membrane.Currently, woven bag of China's mass production containing interior mucous membrane is will to compile
Plastic outer bag made of knitting is with single layer inner lining film bag using being manually set in together, and production efficiency is low, high labor cost, and
Inner lining film is waterproof and dampproof polyethylene film, but existing polyethylene film is also prevented from air stream while waterproof and dampproof
It is logical, when contained in Polywoven Bag be fruit, seed, sapling etc. need the being of oxygen often because no oxygen circulation and
Corruption, death cause economic loss, it is therefore desirable to a kind of moisture-proof ventilative interior viscid film plastic woven bag and its manufacturing method are researched and developed,
To contain the beings such as fruit, seed, sapling.
Summary of the invention
The permeability that the purpose of the present invention is to provide a kind of for containing the beings such as fruit, seed, sapling is good, water proof
The manufacturing method of the good interior viscid film plastic woven bag of effect.
The present invention provides a kind of manufacturing method of interior viscid film plastic woven bag, and interior mucous membrane woven bag successively includes from outside to inside
Polypropylene woven bag, eva film layer and film layer, include the following steps：
S1：Drying is blended in raw material：PP GRANULES, filling master batch, auxiliary agent are put into dry blender and stir drying；
S2：Drawing process：Material after the blending of S1 step is dry enters extruder, the heating and spiral shell by barrel
The shearing of bar and machine barrel is extruded as film by die head molding, after 30-40 DEG C of water is cooling, is cut into embryo silk with blade,
And be stretched to form flat filament by drying-plate, it is coiled that flat filament receives silk by receive silk machine after thermal finalization；
S3：Foam process：Low density polyethylene (LDPE) 75%-90%, maize oxidized starch 9%-20%, AC foaming agent 1%-
5% is added heating in double-layer coextrusion inflation film machine, melting stirring, forms polyethylene foamed melt；
S4：Heating in double-layer coextrusion inflation film machine, melting is added in EVA80%-90%, foaming agent 10%-20% again
After be blow molded into mucous membrane in columnar two layers, wherein outer layer be eva film layer, internal layer be polyethylene foamed film layer；
S5：Knitting process：By coiled flat filament by circular weaving machine at cylinder-shaped woven bag, by examining, it is qualified to examine
Afterwards, mucous membrane in bilayer is covered in cylinder-shaped woven bag, then is wound by winder；
S6：Compound working procedure：The woven bag of interior mucous membrane is cased with by interior mucous membrane compounding machine, eva film layer passes through melted by heating
With viscosity, the foaming agent of eva film layer is thermally decomposed, and forms foaming eva film layer for polyethylene foamed film layer and braiding
Bag is bonded to the interior mucous membrane woven bag bonded；
S7：Bag making：The interior mucous membrane woven bag bonded in step S5 is had by printing, cutting and sew as finished product
Interior viscid film plastic woven bag.
As a further improvement of the present invention, heating temperature is 80 DEG C -90 DEG C in step S3.
As a further improvement of the present invention, the heating temperature in step S6 is 90 DEG C -100 DEG C.
As a further improvement of the present invention, foaming agent is sodium bicarbonate.
As a further improvement of the present invention, the raw material components that eva film layer is prepared in step S3 are EVA85%, foam
Agent 15%, the raw material components for preparing polyethylene layer are polyethylene foamed 83%, maize oxidized starch 15%, AC foaming agent 2%.
Compared with prior art, the invention has the advantages that：
1. interior mucous membrane of the invention is made of film layer and eva film layer, inner layer polyethylene film layer is to use
Polyethylene foamed, maize oxidized starch and dispersing agent are blow molded after heating, melting, and are added to the hair of maize oxidized starch
There is numerous Small Holes gap in bubble film layer, and maize oxidized starch particle periphery can be formed more interconnected
Tiny hole or channel form reticular structure between the hole in tiny hole and channel and polyethylene foamed, so that entirely
Film layer has excellent gas penetration performance, can be conducive to the biggish substance of this compressed coefficient of gas and quickly spread
By film layer, the diameter better than the hole of film is smaller, and droplet can effectively be stopped to pass through hole, therefore interior strata second
Alkene film can play the effect of air-permeable dampproof, keep oxygen stream in the being that long-time contains the needs such as fruit, seed, sapling
Logical supply, extends the time-to-live of being, reduces loss.
2. the polarity due to polyethylene is very weak, it is therefore desirable to which eva film layer is by film layer and polypropylene woven bag
Bonding fastening, eva film layer of the invention are using EVA and foaming agent by heating, when melting, and foaming agent does not decompose generation gas
Body, foaming agent are dispersed in eva film layer, when eva film layer enters the heating of interior mucous membrane compounding machine, EVA melted by heating, but
It is the melting temperature that temperature is not up to polyethylene, then EVA is by inner layer polyethylene film layer and polypropylene woven bag tight bond,
Foaming agent in eva film layer is thermally decomposed, and is generated bulk gas, is formed the hole being largely relatively large in diameter in eva film layer, both
The cementation that EVA can be played can enable extraneous gas to run through eva film again.
3. polyethylene film of the invention, using maize oxidized starch, oxidized starch is starch in acid, alkali, neutral Jie
It is acted in matter with oxidant, makes a kind of converted starch obtained from starch oxidation, oxidized starch is after soda acid processing degradation
Product, molecular weight is smaller than starch, can be more compared to the dosage for starch in the film, the tiny hole of formation
More, the gas permeability of film is more preferable, is that the hydroxymethylation in starch is formed methylol, reduces between hydroxyl and hydrone
Active force further increases the hydrophobic performance of polyethylene film, wherein maize oxidized starch compared to potato oxidized starch have compared with
Good viscosity, stability and anti-freezing property, can improve the freezing tolerance of woven bag.
Specific embodiment
Technical solution of the present invention is clearly and completely described below in conjunction with specific embodiment.Obviously, described
Embodiment be only a part of the embodiments of the present invention, instead of all the embodiments.Based on the embodiment of the present invention, ability
Domain those of ordinary skill every other embodiment obtained without creative efforts, belongs to guarantor of the present invention
The range of shield.
The present invention discloses a kind of manufacturing method of interior viscid film plastic woven bag, specific embodiment is as follows.
Embodiment 1
A kind of manufacturing method of interior viscid film plastic woven bag, interior mucous membrane woven bag successively include polypropylene woven from outside to inside
Bag, eva film layer and film layer, include the following steps：
S1：Drying is blended in raw material：100kg PP GRANULES, 10kg filling master batch, 20g antioxidant are put into drying
Drying is stirred in blender；
S2：Drawing process：Material after the blending of S1 step is dry enters extruder, the heating and spiral shell by barrel
The shearing of bar and machine barrel is extruded as film by die head molding, after 30-40 DEG C of water is cooling, is cut into embryo silk with blade,
And be stretched to form flat filament by drying-plate, it is coiled that flat filament receives silk by receive silk machine after thermal finalization；
S3：Foam process：Low density polyethylene (LDPE) 20kg, maize oxidized starch 5.3kg, AC foaming agent 1.3kg are added double-deck
It is heated to 80 DEG C, melting stirring in coextrusion blow film machine, forms polyethylene foamed melt；
S4：EVA20kg, foaming agent sodium hydroxide 5kg are added in double-layer coextrusion inflation film machine at a temperature of 80 DEG C again and melted
Mucous membrane in columnar two layers is blow molded into after melting, wherein outer layer is eva film layer, and internal layer is polyethylene foamed film layer；
S5：Knitting process：By coiled flat filament by circular weaving machine at cylinder-shaped woven bag, by examining, it is qualified to examine
Afterwards, mucous membrane in bilayer is covered in cylinder-shaped woven bag, then is wound by winder；
S6：Compound working procedure：The woven bag of interior mucous membrane is cased with by interior mucous membrane compounding machine, eva film layer adds by compounding machine
Heat to temperature is 90 DEG C, and eva film layer melted by heating has viscosity at this temperature, and the sodium hydroxide of eva film layer is heated to be divided
Solution forms foaming eva film layer and polyethylene foamed film layer and woven bag is bonded to the interior mucous membrane woven bag bonded；
S6：Bag making：The interior mucous membrane woven bag bonded in step S5 is had by printing, cutting and sew as finished product
Interior viscid film plastic woven bag.
Embodiment 2
A kind of manufacturing method of interior viscid film plastic woven bag, interior mucous membrane woven bag successively include polypropylene woven from outside to inside
Bag, eva film layer and film layer, include the following steps：
S1：Drying is blended in raw material：100kg PP GRANULES, 10kg filling master batch, 20g antioxidant are put into drying
Drying is stirred in blender；
S2：Drawing process：Material after the blending of S1 step is dry enters extruder, the heating and spiral shell by barrel
The shearing of bar and machine barrel is extruded as film by die head molding, after 30-40 DEG C of water is cooling, is cut into embryo silk with blade,
And be stretched to form flat filament by drying-plate, it is coiled that flat filament receives silk by receive silk machine after thermal finalization；
S3：Foam process：Double-layer coextrusion is added in low density polyethylene (LDPE) 20kg, maize oxidized starch 2kg, AC foaming agent 200g
It is heated to 90 DEG C, melting stirring in inflation film machine, forms polyethylene foamed melt；
S4：EVA20kg, foaming agent sodium hydroxide 2.2kg are added in double-layer coextrusion inflation film machine at a temperature of 90 DEG C again
Mucous membrane in columnar two layers is blow molded into after melting, wherein outer layer is eva film layer, and internal layer is polyethylene foamed film layer；
S5：Knitting process：By coiled flat filament by circular weaving machine at cylinder-shaped woven bag, by examining, it is qualified to examine
Afterwards, mucous membrane in bilayer is covered in cylinder-shaped woven bag, then is wound by winder；
S6：Compound working procedure：The woven bag of interior mucous membrane is cased with by interior mucous membrane compounding machine, eva film layer adds by compounding machine
Heat to temperature is 100 DEG C, and at this temperature, eva film layer has viscosity, the sodium hydroxide of eva film layer by melted by heating
It is thermally decomposed, forms foaming eva film layer and polyethylene foamed film layer and woven bag are bonded to the interior mucous membrane braiding bonded
Bag；
Bag making：The interior mucous membrane woven bag bonded in step S5 is become into finished product with interior by printing, cutting and sewing
Viscid film plastic woven bag.
Embodiment 3
A kind of manufacturing method of interior viscid film plastic woven bag, interior mucous membrane woven bag successively include polypropylene woven from outside to inside
Bag, eva film layer and film layer, include the following steps：
S1：Drying is blended in raw material：100kg PP GRANULES, 10kg filling master batch, 20g antioxidant are put into drying
Drying is stirred in blender；
S2：Drawing process：Material after the blending of S1 step is dry enters extruder, the heating and spiral shell by barrel
The shearing of bar and machine barrel is extruded as film by die head molding, after 30-40 DEG C of water is cooling, is cut into embryo silk with blade,
And be stretched to form flat filament by drying-plate, it is coiled that flat filament receives silk by receive silk machine after thermal finalization；
S3：Foam process：Low density polyethylene (LDPE) 20kg, maize oxidized starch 3.6kg, AC foaming agent 480g are added double-deck total
It squeezes in inflation film machine and is heated to 85 DEG C, melting stirring, form polyethylene foamed melt；
S4：EVA20kg, foaming agent sodium hydroxide 3.5kg are added in double-layer coextrusion inflation film machine at a temperature of 85 DEG C again
Mucous membrane in columnar two layers is blow molded into after melting, wherein outer layer is eva film layer, and internal layer is polyethylene foamed film layer；
S5：Knitting process：By coiled flat filament by circular weaving machine at cylinder-shaped woven bag, by examining, it is qualified to examine
Afterwards, mucous membrane in bilayer is covered in cylinder-shaped woven bag, then is wound by winder；
S6：Compound working procedure：The woven bag of interior mucous membrane is cased with by interior mucous membrane compounding machine, eva film layer adds by compounding machine
Heat to temperature is 95 DEG C, and eva film layer melted by heating has viscosity at this temperature, and the sodium hydroxide of eva film layer is heated to be divided
Solution, it forms foaming eva film layer and polyethylene foamed film layer and woven bag is bonded to the interior mucous membrane woven bag bonded；
Bag making：The interior mucous membrane woven bag bonded in step S5 is become into finished product with interior by printing, cutting and sewing
Viscid film plastic woven bag.
Comparative example 1
A kind of manufacturing method of interior viscid film plastic woven bag, interior mucous membrane woven bag successively include polypropylene woven from outside to inside
Bag, eva film layer and film layer, include the following steps：
S1：Drying is blended in raw material：100kg PP GRANULES, 10kg filling master batch, 20g antioxidant are put into drying
Drying is stirred in blender；
S2：Drawing process：Material after the blending of S1 step is dry enters extruder, the heating and spiral shell by barrel
The shearing of bar and machine barrel is extruded as film by die head molding, after 30-40 DEG C of water is cooling, is cut into embryo silk with blade,
And be stretched to form flat filament by drying-plate, it is coiled that flat filament receives silk by receive silk machine after thermal finalization；
S3：Foam process：Double-layer coextrusion inflation film is added in low density polyethylene (LDPE) 20kg, starch 2kg, AC foaming agent 200g
It is heated to 90 DEG C, melting stirring in machine, forms polyethylene foamed melt；
S4：EVA20kg, foaming agent sodium hydroxide 2.2kg are added in double-layer coextrusion inflation film machine at a temperature of 90 DEG C again
Mucous membrane in columnar two layers is blow molded into after melting, wherein outer layer is eva film layer, and internal layer is polyethylene foamed film layer, is seen
It examines and finds that internal layer polyethylene foamed film layer film forming is poor, there are more breaking parts in film；
S5：Knitting process：By coiled flat filament by circular weaving machine at cylinder-shaped woven bag, by examining, it is qualified to examine
Afterwards, mucous membrane in bilayer is covered in cylinder-shaped woven bag, then is wound by winder；
S6：Compound working procedure：The woven bag of interior mucous membrane is cased with by interior mucous membrane compounding machine, eva film layer adds by compounding machine
Heat to temperature is 100 DEG C, and at this temperature, eva film layer has viscosity, the sodium hydroxide of eva film layer by melted by heating
It is thermally decomposed, forms foaming eva film layer and polyethylene foamed film layer and woven bag are bonded to the interior mucous membrane braiding bonded
Bag；
Bag making：The interior mucous membrane woven bag bonded in step S5 is become into finished product with interior by printing, cutting and sewing
Viscid film plastic woven bag.
Comparative example 2
A kind of manufacturing method of interior viscid film plastic woven bag, interior mucous membrane woven bag successively include polypropylene woven from outside to inside
Bag, eva film layer and film layer, include the following steps：
S1：Drying is blended in raw material：100kg PP GRANULES, 10kg filling master batch, 20g antioxidant are put into drying
Drying is stirred in blender；
S2：Drawing process：Material after the blending of S1 step is dry enters extruder, the heating and spiral shell by barrel
The shearing of bar and machine barrel is extruded as film by die head molding, after 30-40 DEG C of water is cooling, is cut into embryo silk with blade,
And be stretched to form flat filament by drying-plate, it is coiled that flat filament receives silk by receive silk machine after thermal finalization；
S3：Foam process：It is thin that double-layer coextrusion blow molding is added in low density polyethylene (LDPE) 20kg, starch 0.5kg, AC foaming agent 200g
It is heated to 90 DEG C, melting stirring in film machine, forms polyethylene foamed melt；
S4：EVA20kg, foaming agent sodium hydroxide 2.2kg are added in double-layer coextrusion inflation film machine at a temperature of 90 DEG C again
Mucous membrane in columnar two layers is blow molded into after melting, wherein outer layer is eva film layer, and internal layer is polyethylene foamed film layer；
S5：Knitting process：By coiled flat filament by circular weaving machine at cylinder-shaped woven bag, by examining, it is qualified to examine
Afterwards, mucous membrane in bilayer is covered in cylinder-shaped woven bag, then is wound by winder；
S6：Compound working procedure：The woven bag of interior mucous membrane is cased with by interior mucous membrane compounding machine, eva film layer adds by compounding machine
Heat to temperature is 100 DEG C, and at this temperature, eva film layer has viscosity, the sodium hydroxide of eva film layer by melted by heating
It is thermally decomposed, forms foaming eva film layer and polyethylene foamed film layer and woven bag are bonded to the interior mucous membrane braiding bonded
Bag；
Bag making：The interior mucous membrane woven bag bonded in step S5 is become into finished product with interior by printing, cutting and sewing
Viscid film plastic woven bag.
Prepared by test bars respectively according to GB/T1038-2000 to woven bag in embodiment 1- embodiment 3《Plastic film and
Thin slice gas-premeable test method pressure differential method》And GB1037-70《Plastic film permeability test method》Carry out permeability
With the test of water vapour permeability, as a result such as the following table 1.
The air transmission coefficient and moisture permeable coefficient of the different embodiments of table 1
Embodiment 1, embodiment 2 and embodiment 3 are the modelings that maize oxidized starch dosage is presented in mucous membrane formula in changing
Expect the test result of woven bag permeability and water vapour permeability, wherein the bigger permeability of air transmission coefficient is better, and moisture permeable coefficient is got over
Greatly, the water isolating that blocks water is poorer, it can be deduced that, in a certain range, the increase of maize oxidized starch dosage dosage in formula is compiled
The permeability of bag is knitted into increase tendency, but embodiment 3 is more preferable than the permeability of embodiment 2, water vapour permeability is in certain model
Increase in enclosing with the increase of middle maize oxidized starch dosage dosage, from comprehensive performance embodiment 2 be interior mucous membrane most
Good proportion.
It from comparative example 1 the difference from example 2 is that comparative example 1 uses starch, and is beautiful used in embodiment 2
Rice oxidized starch, it is more poor than the permeability of the test woven bag of embodiment 2 that comparative example 1 tests woven bag, and compares water proof
Performance is worse, this is because oxidized starch is that starch acts in acid, alkali, neutral medium with oxidant, makes starch oxidation and obtains
A kind of converted starch arrived, oxidized starch are the products after soda acid processing degradation, and molecular weight is smaller than starch, compared to
Dosage for starch in the film can be more, and the tiny hole of formation is more, and the gas permeability of film is more preferable, and being will be in starch
Hydroxymethylation form methylol, reduce the active force between hydroxyl and hydrone, further increase the hydrophobic of polyethylene film
Performance.
1 film forming of comparative example is poor, and observation discovery internal layer polyethylene foamed film layer film forming is poor, exists in film more multibreak
Place is split, because starch is coarseer than oxidized starch particle, film forming fracture is more in the case where same dosage, and starch is with more
Hydroxyl, hydrophily is strong, then in mucous membrane water isolating it is poor compared with the water-resisting property of mucous membrane in the woven bag for using oxidized starch, therefore
The filming performance and hydrophobic performance of mucous membrane in same dosage can be improved using oxidized starch.
Comparative example 2 be reduce the obtained test woven bag of starch dosage, although from data as can be seen that woven bag every
It is aqueous can be better than embodiment 1 and embodiment 3, but its permeability greatly reduces, and is unsatisfactory for the present invention and prepares ventilative woven bag
Purpose.
In summary factor considers that optimal embodiment is embodiment 3.
A kind of manufacturing method of interior viscid film plastic woven bag provided by the present invention is described in detail above.Herein
In apply specific embodiment principle and implementation of the present invention are described, the explanation of above example is only intended to
It facilitates the understanding of the method and its core concept of the invention.It should be pointed out that for those skilled in the art,
Without departing from the principles of the invention, can be with several improvements and modifications are made to the present invention, these improvement and modification are also fallen
Enter in the protection scope of the claims in the present invention.
Claims (5)
1. a kind of manufacturing method of interior viscid film plastic woven bag, it is characterised in that：Interior mucous membrane woven bag successively includes from outside to inside
Polypropylene woven bag, eva film layer and film layer, include the following steps：
S1：Drying is blended in raw material：PP GRANULES, filling master batch, auxiliary agent are put into dry blender and stir drying；
S2：Drawing process：Material after the blending of S1 step is dry enters extruder, by the heating of barrel and screw rod with
The shearing of machine barrel is extruded as film by die head molding, after 30-40 DEG C of water is cooling, is cut into embryo silk with blade, and pass through
It crosses drying-plate to be stretched to form flat filament, it is coiled that flat filament receives silk by receive silk machine after thermal finalization；
S3：Foam process：Low density polyethylene (LDPE) 75%-90%, maize oxidized starch 9%-20%, AC foaming agent 1%-5% add
Enter in double-layer coextrusion inflation film machine to heat, melt stirring, forms polyethylene foamed melt；
S4：Heating in double-layer coextrusion inflation film machine, melting after-blow is added in EVA80%-90%, foaming agent 10%-20% again
It is moulded into mucous membrane in columnar two layers, wherein outer layer is eva film layer, and internal layer is polyethylene foamed film layer；
S5：Knitting process：It, after the assay was approved, will by examining by coiled flat filament by circular weaving machine at cylinder-shaped woven bag
Mucous membrane covers in cylinder-shaped woven bag in bilayer, then is wound by winder；
S6：Compound working procedure：The woven bag of interior mucous membrane is cased with by interior mucous membrane compounding machine, eva film layer has by melted by heating
The foaming agent of viscosity, eva film layer is thermally decomposed, and is formed foaming eva film layer and is glued polyethylene foamed film layer and woven bag
Form the interior mucous membrane woven bag bonded；
S7：Bag making：The interior mucous membrane woven bag bonded in step S6 is become into finished product with interior viscous by printing, cutting and sewing
Film Polywoven Bag.
2. a kind of manufacturing method of interior viscid film plastic woven bag according to claim 1, it is characterised in that：The step S3
It is 80 DEG C -90 DEG C with heating temperature in step S4.
3. a kind of manufacturing method of interior viscid film plastic woven bag according to claim 1, it is characterised in that：The step S6
In heating temperature be 90 DEG C -100 DEG C.
4. a kind of manufacturing method of interior viscid film plastic woven bag according to claim 1, it is characterised in that：The foaming agent
For sodium bicarbonate.
5. a kind of manufacturing method of interior viscid film plastic woven bag according to claim 1, it is characterised in that：The step S3
It is EVA85%, foaming agent 15% with the raw material components for preparing eva film layer in step S4, prepares the raw material components of polyethylene layer
For polyethylene foamed 83%, maize oxidized starch 15%, AC foaming agent 2%.
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| CN201810499116.2A CN108859263B (en) | 2018-05-23 | 2018-05-23 | Method for manufacturing plastic woven bag with inner adhesive film |
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| CN201810499116.2A CN108859263B (en) | 2018-05-23 | 2018-05-23 | Method for manufacturing plastic woven bag with inner adhesive film |
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| CN108859263B CN108859263B (en) | 2020-07-10 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110217476A (en) * | 2019-05-31 | 2019-09-10 | 应城市新都化工塑业有限公司 | A kind of waterproof and dampproof woven bag and preparation method thereof |
| CN110524837A (en) * | 2019-09-09 | 2019-12-03 | 枣阳市东航塑编彩印有限公司 | A kind of preparation method of toughened plastics woven bag |
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