CN108673982A - A kind of manufacturing method of Environment-friendlywoven woven bag - Google Patents
A kind of manufacturing method of Environment-friendlywoven woven bag Download PDFInfo
- Publication number
- CN108673982A CN108673982A CN201810499124.7A CN201810499124A CN108673982A CN 108673982 A CN108673982 A CN 108673982A CN 201810499124 A CN201810499124 A CN 201810499124A CN 108673982 A CN108673982 A CN 108673982A
- Authority
- CN
- China
- Prior art keywords
- woven bag
- film layer
- layer
- mucous membrane
- machine
- Prior art date
- 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.)
- Granted
Links
Classifications
-
- 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
- B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
- B32B5/02—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer
-
- 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
- B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
- B32B5/18—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by features of a layer of foamed 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
- B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
- B32B5/22—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed
- B32B5/24—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer
-
- 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
- B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
- B32B5/22—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed
- B32B5/32—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed at least two layers being foamed and next to each other
-
- 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
- B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
- B32B2262/02—Synthetic macromolecular fibres
- B32B2262/0253—Polyolefin fibres
-
- 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
- B32B2266/00—Composition of foam
- B32B2266/02—Organic
- B32B2266/0214—Materials belonging to B32B27/00
- B32B2266/0221—Vinyl 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
- B32B2266/00—Composition of foam
- B32B2266/02—Organic
- B32B2266/0214—Materials belonging to B32B27/00
- B32B2266/025—Polyolefin
Landscapes
- Shaping By String And By Release Of Stress In Plastics And The Like (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
- Wrappers (AREA)
- Laminated Bodies (AREA)
Abstract
The present invention provides a kind of manufacturing method of Environment-friendlywoven woven bag, and interior mucous membrane woven bag includes successively from outside to inside polypropylene woven bag, eva film layer and film layer, is included the following steps：S1：Drying is blended in raw material；S2：Drawing process；S3：Foam process；S4：EVA80% 90%, foaming agent 10% 20% are added after heating in double-layer coextrusion inflation film machine, melting again and are blow molded 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；S6：Compound working procedure；S7：Bag making.The purpose of the present invention is to provide a kind of manufacturing methods for containing good, good water insulation effect the woven bag of permeability of the beings such as fruit, seed, sapling.
Description
Technical field
The present invention relates to Polywoven Bag processing technique field, more particularly to a kind of manufacturing method of Environment-friendlywoven woven bag.
Background technology
Polywoven Bag is formed by extrusion, wire drawing, then through weaving, braiding, bag making using polypropylene as primary raw material.
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 and single layer inner lining film bag are using being manually set in together, low production efficiency, 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.
Invention content
The purpose of the present invention is to provide it is a kind of for contain the beings such as fruit, seed, sapling permeability is good, water proof
The manufacturing method of the good ventilating water proof woven bag woven bag of effect.
The present invention provides a kind of manufacturing method of Environment-friendlywoven woven bag, and interior mucous membrane woven bag includes polypropylene successively from outside to inside
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 steps is dry enters extruder, the heating by barrel and spiral shell
The shearing of bar and machine barrel is extruded as film by die head molding, after 30-40 DEG C of water cooling, embryo silk is cut into blade,
And be stretched to form flat filament by drying-plate, it is coiled that flat filament receives silk after thermal finalization by receive silk machine；
S3：Foam process：Low density polyethylene (LDPE) 75%-90%, wheat 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 is eva film layer, and internal layer is polyethylene foamed film layer；
S5：Knitting process：By coiled flat filament by circular weaving machine at cylindrical shape woven bag, by examining, it is qualified to examine
Afterwards, mucous membrane in bilayer is sleeved in cylindrical shape woven bag, then is wound by winder；
S6：Compound working procedure：The woven bag for being cased with interior mucous membrane passes through interior mucous membrane compounding machine, and 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 by 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 carried by printing, cutting and sew as finished product
Interior viscid film plastic woven bag.
As a further improvement on the present invention, heating temperature is 80 DEG C -90 DEG C in step S3.
As a further improvement on the present invention, the heating temperature in step S6 is 90 DEG C -100 DEG C.
As a further improvement on the present invention, foaming agent is sodium bicarbonate.
As a further improvement on 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%, wheat oxidized starch 15%, AC foaming agents 2%.
Compared with prior art, the invention has the advantages that：
1. the interior mucous membrane of the present invention is made of film layer and eva film layer, inner layer polyethylene film layer is to use
Polyethylene foamed, wheat oxidized starch and dispersant are blow molded after heating, melting, and are added to the hair of wheat oxidized starch
There is numerous Small Holes gap in bubble film layer, and wheat 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 entire
Film layer has excellent gas penetration performance, can be conducive to the larger substance of this compressed coefficient of gas and quickly spread
By film layer, the diameter better than the hole of film is smaller, can effectively stop that droplet passes through hole, therefore interior strata second
Alkene film can play the effect of air-permeable dampproof, and the being that the needs such as fruit, seed, sapling are contained in long-time keeps oxygen stream
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
Fastening is bonded, eva film layer of the invention is 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
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 of EVA can be played can enable extraneous gas to run through eva film again.
3. the polyethylene film of the present invention, using wheat oxidized starch, oxidized starch is starch in acid, alkali, neutral Jie
It is acted on oxidant in matter, it is after soda acid processing degradation to make a kind of converted starch obtained from starch oxidation, oxidized starch
Product, molecular weight, can be more compared to the dosage for starch in the film than starch smaller, 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, and wherein wheat oxidized starch has more compared to potato oxidized starch
Good solid dispersibility, and the transparency of wheaten starch is high, and the easy enzyme of wheat oxidized starch decomposes, and can improve the environmental protection of woven bag
Performance.
Specific implementation mode
Technical scheme of the present invention is clearly and completely described below in conjunction with specific embodiment.Obviously, described
Embodiment be only the present invention a part of the embodiment, instead of all the embodiments.Based on the embodiment of the present invention, ability
The every other embodiment that domain those of ordinary skill is 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 Environment-friendlywoven woven bag, specific implementation mode is as follows.
Embodiment 1
A kind of manufacturing method of Environment-friendlywoven woven bag, woven bag include polypropylene woven bag, eva film layer successively from outside to inside
And film layer, include the following steps：
S1：Drying is blended in raw material：100kg PP GRANULESs, 10kg filling master batch, 20g antioxidants are put into drying
Drying is stirred in blender；
S2：Drawing process：Material after the blending of S1 steps is dry enters extruder, the heating by barrel and spiral shell
The shearing of bar and machine barrel is extruded as film by die head molding, after 30-40 DEG C of water cooling, embryo silk is cut into blade,
And be stretched to form flat filament by drying-plate, it is coiled that flat filament receives silk after thermal finalization by receive silk machine；
S3：Foam process：Low density polyethylene (LDPE) 20kg, wheat 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 cylindrical shape woven bag, by examining, it is qualified to examine
Afterwards, mucous membrane in bilayer is sleeved in cylindrical shape woven bag, then is wound by winder；
S6：Compound working procedure：The woven bag for being cased with interior mucous membrane passes through interior mucous membrane compounding machine, and eva film layer adds by compounding machine
Heat to temperature is 90 DEG C, and eva film layer melted by heating has viscosity, heated point of the sodium hydroxide of eva film layer at this temperature
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 carried by printing, cutting and sew as finished product
Interior viscid film plastic woven bag.
Embodiment 2
A kind of manufacturing method of Environment-friendlywoven woven bag, woven bag include polypropylene woven bag, eva film layer successively from outside to inside
And film layer, include the following steps：
S1：Drying is blended in raw material：100kg PP GRANULESs, 10kg filling master batch, 20g antioxidants are put into drying
Drying is stirred in blender；
S2：Drawing process：Material after the blending of S1 steps is dry enters extruder, the heating by barrel and spiral shell
The shearing of bar and machine barrel is extruded as film by die head molding, after 30-40 DEG C of water cooling, embryo silk is cut into blade,
And be stretched to form flat filament by drying-plate, it is coiled that flat filament receives silk after thermal finalization by receive silk machine；
S3：Foam process：Double-layer coextrusion is added in low density polyethylene (LDPE) 20kg, wheat 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 cylindrical shape woven bag, by examining, it is qualified to examine
Afterwards, mucous membrane in bilayer is sleeved in cylindrical shape woven bag, then is wound by winder；
S6：Compound working procedure：The woven bag for being cased with interior mucous membrane passes through interior mucous membrane compounding machine, and 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 sew
Viscid film plastic woven bag.
Embodiment 3
A kind of manufacturing method of Environment-friendlywoven woven bag, woven bag include polypropylene woven bag, eva film layer successively from outside to inside
And film layer, include the following steps：
S1：Drying is blended in raw material：100kg PP GRANULESs, 10kg filling master batch, 20g antioxidants are put into drying
Drying is stirred in blender；
S2：Drawing process：Material after the blending of S1 steps is dry enters extruder, the heating by barrel and spiral shell
The shearing of bar and machine barrel is extruded as film by die head molding, after 30-40 DEG C of water cooling, embryo silk is cut into blade,
And be stretched to form flat filament by drying-plate, it is coiled that flat filament receives silk after thermal finalization by receive silk machine；
S3：Foam process：Low density polyethylene (LDPE) 20kg, wheat 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；
S4：85 DEG C of temperature in double-layer coextrusion inflation film machine are added in EVA%20kg, foaming agent sodium hydroxide 3.5kg again
Mucous membrane in columnar two layers is blow molded into after lower 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 cylindrical shape woven bag, by examining, it is qualified to examine
Afterwards, mucous membrane in bilayer is sleeved in cylindrical shape woven bag, then is wound by winder；
S6：Compound working procedure：The woven bag for being cased with interior mucous membrane passes through interior mucous membrane compounding machine, and eva film layer adds by compounding machine
Heat to temperature is 95 DEG C, and eva film layer melted by heating has viscosity, heated point of the sodium hydroxide of eva film layer at this temperature
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 sew
Viscid film plastic woven bag.
Comparative example 1
A kind of manufacturing method of Environment-friendlywoven woven bag, woven bag include polypropylene woven bag, eva film layer successively from outside to inside
And film layer, include the following steps：
S1：Drying is blended in raw material：100kg PP GRANULESs, 10kg filling master batch, 20g antioxidants are put into drying
Drying is stirred in blender；
S2：Drawing process：Material after the blending of S1 steps is dry enters extruder, the heating by barrel and spiral shell
The shearing of bar and machine barrel is extruded as film by die head molding, after 30-40 DEG C of water cooling, embryo silk is cut into blade,
And be stretched to form flat filament by drying-plate, it is coiled that flat filament receives silk after thermal finalization by receive silk machine；
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 cylindrical shape woven bag, by examining, it is qualified to examine
Afterwards, mucous membrane in bilayer is sleeved in cylindrical shape woven bag, then is wound by winder；
S6：Compound working procedure：The woven bag for being cased with interior mucous membrane passes through interior mucous membrane compounding machine, and 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 sew
Viscid film plastic woven bag.
Comparative example 2
A kind of manufacturing method of Environment-friendlywoven woven bag, woven bag include polypropylene woven bag, eva film layer successively from outside to inside
And film layer, include the following steps：
S1：Drying is blended in raw material：100kg PP GRANULESs, 10kg filling master batch, 20g antioxidants are put into drying
Drying is stirred in blender；
S2：Drawing process：Material after the blending of S1 steps is dry enters extruder, the heating by barrel and spiral shell
The shearing of bar and machine barrel is extruded as film by die head molding, after 30-40 DEG C of water cooling, embryo silk is cut into blade,
And be stretched to form flat filament by drying-plate, it is coiled that flat filament receives silk after thermal finalization by receive silk machine；
S3：Foam process：It is thin that double-layer coextrusion blowing 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 cylindrical shape woven bag, by examining, it is qualified to examine
Afterwards, mucous membrane in bilayer is sleeved in cylindrical shape woven bag, then is wound by winder；
S6：Compound working procedure：The woven bag for being cased with interior mucous membrane passes through interior mucous membrane compounding machine, and 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 sew
Viscid film plastic woven bag.
Prepared by test bars respectively according to GB/T1038-2000 to woven bag in embodiment 1- embodiments 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 wheat 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 wheat 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 with the increase of middle wheat oxidized starch dosage dosage in enclosing, from comprehensive performance embodiment 2 be interior mucous membrane most
Good proportioning.
From comparative example 1 the difference from example 2 is that comparative example 1 uses starch, and is used in embodiment 2 small
Wheat oxidized starch, the test woven bag of comparative example 1 are more poor than the permeability of the test woven bag of embodiment 2, and compare water proof
Performance is worse, is acted on oxidant in acid, alkali, neutral medium this is because oxidized starch is starch, makes starch oxidation and obtain
A kind of converted starch arrived, oxidized starch are the products after soda acid processing degradation, molecular weight than starch smaller, 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 finds that 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 of 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
Water performance ratio embodiment 1 and embodiment 3 are good, but its permeability greatly reduces, and are unsatisfactory for the present invention and prepare woven bag of breathing freely
Purpose.
In summary factor considers that best embodiment is embodiment 3.
A kind of manufacturing method of Environment-friendlywoven woven bag provided by the present invention is described in detail above.It is used herein
Principle and implementation of the present invention are described for specific embodiment, and the explanation of above example is only intended to help to manage
Solve the method and its core concept of the present invention.It should be pointed out that for those skilled in the art, not departing from
, can be with several improvements and modifications are made to the present invention under the premise of the principle of the invention, these improvement and modification also fall into this hair
In bright scope of the claims.
Claims (5)
1. a kind of manufacturing method of Environment-friendlywoven woven bag, it is characterised in that：Woven bag from outside to inside successively include 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 steps 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 cooling, cuts 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 after thermal finalization by receive silk machine；
S3：Foam process：Low density polyethylene (LDPE) 75%-90%, wheat 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 cylindrical shape woven bag
Mucous membrane is sleeved in cylindrical shape woven bag in bilayer, then is wound by winder；
S6：Compound working procedure：The woven bag for being cased with interior mucous membrane passes through interior mucous membrane compounding machine, and 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 sew
Film Polywoven Bag.
2. a kind of manufacturing method of Environment-friendlywoven woven bag according to claim 1, it is characterised in that：The step S3 and step
Heating temperature is 80 DEG C -90 DEG C in S4.
3. a kind of manufacturing method of Environment-friendlywoven woven bag according to claim 1, it is characterised in that：Adding in the step S6
Hot temperature is 90 DEG C -100 DEG C.
4. a kind of manufacturing method of Environment-friendlywoven woven bag according to claim 1, it is characterised in that：The foaming agent is carbonic acid
Hydrogen sodium.
5. a kind of manufacturing method of Environment-friendlywoven woven bag according to claim 1, it is characterised in that：The step S3 and step
The raw material components that eva film layer is prepared in S4 are EVA85%, foaming agent 15%, and the raw material components for preparing polyethylene layer are foaming
Polyethylene 83%, wheat oxidized starch 15%, AC foaming agents 2%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810499124.7A CN108673982B (en) | 2018-05-23 | 2018-05-23 | Manufacturing method of environment-friendly woven bag |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810499124.7A CN108673982B (en) | 2018-05-23 | 2018-05-23 | Manufacturing method of environment-friendly woven bag |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108673982A true CN108673982A (en) | 2018-10-19 |
| CN108673982B CN108673982B (en) | 2020-07-10 |
Family
ID=63807913
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810499124.7A Active CN108673982B (en) | 2018-05-23 | 2018-05-23 | Manufacturing method of environment-friendly woven bag |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108673982B (en) |
Cited By (2)
| 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 |
| CN114083818A (en) * | 2021-11-24 | 2022-02-25 | 汪文瑞 | Processing technology of double-layer inner-adhesion flexible freight bag |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102504344A (en) * | 2011-11-09 | 2012-06-20 | 青岛科技大学 | Recyclable high-strength biological packaging material |
| CN104477490A (en) * | 2014-11-29 | 2015-04-01 | 安徽顺彤包装材料有限公司 | Production process of plastic woven bag |
| CN105109803A (en) * | 2015-07-16 | 2015-12-02 | 广西鹿寨桂浙塑料包装有限公司 | Method for manufacturing interior film-pasting woven bag |
| CN105566831A (en) * | 2016-03-07 | 2016-05-11 | 惠州市环美盛新材料有限公司 | Water-foamed, antibacterial and air-permeable microporous film masterbatch, film and preparation method thereof |
-
2018
- 2018-05-23 CN CN201810499124.7A patent/CN108673982B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102504344A (en) * | 2011-11-09 | 2012-06-20 | 青岛科技大学 | Recyclable high-strength biological packaging material |
| CN104477490A (en) * | 2014-11-29 | 2015-04-01 | 安徽顺彤包装材料有限公司 | Production process of plastic woven bag |
| CN105109803A (en) * | 2015-07-16 | 2015-12-02 | 广西鹿寨桂浙塑料包装有限公司 | Method for manufacturing interior film-pasting woven bag |
| CN105566831A (en) * | 2016-03-07 | 2016-05-11 | 惠州市环美盛新材料有限公司 | Water-foamed, antibacterial and air-permeable microporous film masterbatch, film and preparation method thereof |
Cited By (2)
| 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 |
| CN114083818A (en) * | 2021-11-24 | 2022-02-25 | 汪文瑞 | Processing technology of double-layer inner-adhesion flexible freight bag |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108673982B (en) | 2020-07-10 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108705784A (en) | A kind of manufacturing method of ventilating water proof woven bag | |
| CN108859263A (en) | A kind of manufacturing method of interior viscid film plastic woven bag | |
| EP1075188B1 (en) | Biodegradable protein/starch-based thermoplastic composition | |
| CA2358255C (en) | Thermoplastic food casing | |
| CN108673982A (en) | A kind of manufacturing method of Environment-friendlywoven woven bag | |
| CN107236167A (en) | A kind of preparation method of high-performance polyethylene ventilated membrane | |
| CN103571013A (en) | Water resistible and breathable plastic film with drying function as well as preparation method and application thereof | |
| CN106883490A (en) | Fretting map master batch and preparation method thereof and refrigerator foaming plate | |
| CN108715055A (en) | A kind of manufacturing method of high ventilative woven bag | |
| CN105566755A (en) | Surface layer-core layer synchronous co-extrusion flame-retardant wood-plastic composite material and manufacturing method thereof | |
| CN110643158B (en) | Polylactic acid foaming material for cigarette filter tip and preparation method thereof | |
| CN106633502A (en) | Aerogel polyvinyl chloride material and preparation method thereof | |
| CN109049919A (en) | A kind of foaming absorbing material and preparation method thereof | |
| CN110511544A (en) | A kind of biodegradable breathable composite film and preparation method thereof | |
| CN105086066A (en) | Moisture absorbing and mold proofing film for packaging fine dried noodles | |
| CN109265825B (en) | Polypropylene or polypropylene compound foamed product and preparation method thereof | |
| CN108034137A (en) | Lightweight polypropylene composite material of plant fiber and preparation method thereof | |
| CN107141557A (en) | A kind of chemical blowing master batch | |
| CN110228261A (en) | A kind of degradable once plastic foil and preparation method thereof | |
| CN110395031A (en) | A kind of fresh transport being folded without breaking bag film and preparation method thereof of double-layer structure | |
| CN113429704B (en) | SiO (silicon dioxide)2Aerogel/fiber heat-insulation bacteriostatic composite packaging material and preparation method thereof | |
| CN106905586A (en) | Fretting map functional agglomerate composition and preparation method thereof and refrigerator foaming plate | |
| CN107226969A (en) | A kind of pvc composite decorating boards | |
| CN106750941A (en) | Modified polypropylene flame redardant foamed board of a kind of hydridization aramid fiber silica aerogel and preparation method thereof | |
| CN106336652A (en) | Manufacturing method of flame-retardant high-barrier polyamide and film thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |