CN114044265A - Antibacterial plastic packaging bag for paper diaper and preparation method thereof - Google Patents
Antibacterial plastic packaging bag for paper diaper and preparation method thereof Download PDFInfo
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- CN114044265A CN114044265A CN202111365773.6A CN202111365773A CN114044265A CN 114044265 A CN114044265 A CN 114044265A CN 202111365773 A CN202111365773 A CN 202111365773A CN 114044265 A CN114044265 A CN 114044265A
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- 230000000844 anti-bacterial effect Effects 0.000 title claims abstract description 59
- 238000004806 packaging method and process Methods 0.000 title claims abstract description 31
- 239000004033 plastic Substances 0.000 title claims abstract description 20
- 229920003023 plastic Polymers 0.000 title claims abstract description 20
- 238000002360 preparation method Methods 0.000 title abstract description 6
- 239000000835 fiber Substances 0.000 claims abstract description 56
- 239000004745 nonwoven fabric Substances 0.000 claims abstract description 54
- 239000002985 plastic film Substances 0.000 claims abstract description 17
- 229920006255 plastic film Polymers 0.000 claims abstract description 17
- 229920002678 cellulose Polymers 0.000 claims abstract description 7
- 239000001913 cellulose Substances 0.000 claims abstract description 7
- 229920001661 Chitosan Polymers 0.000 claims abstract description 6
- 239000004372 Polyvinyl alcohol Substances 0.000 claims abstract description 6
- 229920002451 polyvinyl alcohol Polymers 0.000 claims abstract description 6
- 239000000126 substance Substances 0.000 claims abstract description 6
- WRIDQFICGBMAFQ-UHFFFAOYSA-N (E)-8-Octadecenoic acid Natural products CCCCCCCCCC=CCCCCCCC(O)=O WRIDQFICGBMAFQ-UHFFFAOYSA-N 0.000 claims abstract description 5
- LQJBNNIYVWPHFW-UHFFFAOYSA-N 20:1omega9c fatty acid Natural products CCCCCCCCCCC=CCCCCCCCC(O)=O LQJBNNIYVWPHFW-UHFFFAOYSA-N 0.000 claims abstract description 5
- QSBYPNXLFMSGKH-UHFFFAOYSA-N 9-Heptadecensaeure Natural products CCCCCCCC=CCCCCCCCC(O)=O QSBYPNXLFMSGKH-UHFFFAOYSA-N 0.000 claims abstract description 5
- ZQPPMHVWECSIRJ-UHFFFAOYSA-N Oleic acid Natural products CCCCCCCCC=CCCCCCCCC(O)=O ZQPPMHVWECSIRJ-UHFFFAOYSA-N 0.000 claims abstract description 5
- 239000005642 Oleic acid Substances 0.000 claims abstract description 5
- QXJSBBXBKPUZAA-UHFFFAOYSA-N isooleic acid Natural products CCCCCCCC=CCCCCCCCCC(O)=O QXJSBBXBKPUZAA-UHFFFAOYSA-N 0.000 claims abstract description 5
- ZQPPMHVWECSIRJ-KTKRTIGZSA-N oleic acid Chemical compound CCCCCCCC\C=C/CCCCCCCC(O)=O ZQPPMHVWECSIRJ-KTKRTIGZSA-N 0.000 claims abstract description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 80
- 238000003860 storage Methods 0.000 claims description 18
- 239000004925 Acrylic resin Substances 0.000 claims description 11
- 229920000178 Acrylic resin Polymers 0.000 claims description 11
- 229920006378 biaxially oriented polypropylene Polymers 0.000 claims description 11
- 239000011127 biaxially oriented polypropylene Substances 0.000 claims description 11
- 230000007246 mechanism Effects 0.000 claims description 11
- 230000001133 acceleration Effects 0.000 claims description 8
- 238000000034 method Methods 0.000 claims description 7
- 238000001467 acupuncture Methods 0.000 claims description 4
- 238000005452 bending Methods 0.000 claims description 4
- 238000004519 manufacturing process Methods 0.000 claims description 4
- 238000007493 shaping process Methods 0.000 claims description 4
- 238000007664 blowing Methods 0.000 claims description 3
- 230000003116 impacting effect Effects 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 3
- 238000000465 moulding Methods 0.000 claims description 3
- 230000003115 biocidal effect Effects 0.000 claims description 2
- 239000003242 anti bacterial agent Substances 0.000 claims 1
- 239000004744 fabric Substances 0.000 abstract description 6
- 230000000694 effects Effects 0.000 abstract description 3
- 239000004743 Polypropylene Substances 0.000 abstract description 2
- -1 polypropylene Polymers 0.000 abstract description 2
- 229920001155 polypropylene Polymers 0.000 abstract description 2
- 239000010409 thin film Substances 0.000 abstract 1
- 238000001704 evaporation Methods 0.000 description 6
- 230000008020 evaporation Effects 0.000 description 6
- 238000009792 diffusion process Methods 0.000 description 5
- 238000002834 transmittance Methods 0.000 description 5
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Images
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D65/00—Wrappers or flexible covers; Packaging materials of special type or form
- B65D65/38—Packaging materials of special type or form
- B65D65/40—Applications of laminates for particular packaging purposes
- B65D65/403—Applications of laminates for particular packaging purposes with at least one corrugated layer
-
- 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
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/001—Combinations of extrusion moulding with other shaping operations
- B29C48/0018—Combinations of extrusion moulding with other shaping operations combined with shaping by orienting, stretching or shrinking, e.g. film blowing
-
- 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
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/001—Combinations of extrusion moulding with other shaping operations
- B29C48/0019—Combinations of extrusion moulding with other shaping operations combined with shaping by flattening, folding or bending
-
- 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
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
- B29C48/05—Filamentary, e.g. strands
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D29/00—Sacks or like containers made of fabrics; Flexible containers of open-work, e.g. net-like construction
- B65D29/04—Net-like containers made of plastics material
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D01F1/00—General methods for the manufacture of artificial filaments or the like
- D01F1/02—Addition of substances to the spinning solution or to the melt
- D01F1/10—Other agents for modifying properties
- D01F1/103—Agents inhibiting growth of microorganisms
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D01F8/00—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof
- D01F8/02—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof from cellulose, cellulose derivatives, or proteins
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D01F8/00—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof
- D01F8/04—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof from synthetic polymers
- D01F8/06—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof from synthetic polymers with at least one polyolefin as constituent
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D01F8/00—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof
- D01F8/04—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof from synthetic polymers
- D01F8/10—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof from synthetic polymers with at least one other macromolecular compound obtained by reactions only involving carbon-to-carbon unsaturated bonds as constituent
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D01F8/00—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof
- D01F8/18—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof from other substances
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Textile Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Absorbent Articles And Supports Therefor (AREA)
Abstract
The invention discloses an antibacterial plastic packaging bag for a paper diaper, which comprises a plastic film layer and an antibacterial non-woven fabric layer, wherein the antibacterial non-woven fabric layer comprises the following substances in parts by weight: 80 to 120 parts of polypropylene fiber; 15 to 30 parts of polyvinyl alcohol fiber; 5 to 15 parts oleic acid; 10-20 parts of chitosan; 5-10 parts of nano-cellulose; the antibacterial non-woven fabric layer is provided with a stretchable structure matched with the plastic film layer to deform under external force along the length direction of the antibacterial non-woven fabric layer; the invention discloses a preparation method of the paper diaper plastic packaging bag; according to the invention, the antibacterial lining non-woven thin cloth layer is matched with the plastic thin film base layer, so that the waterproof and moistureproof effects are effectively achieved, and the structural stability and antibacterial property of the packaging bag are improved.
Description
Technical Field
The invention relates to the technical field of production of paper diaper packaging bags, in particular to a paper diaper antibacterial plastic packaging bag and a preparation method thereof.
Background
Plastic bags are essential items in daily life, are often used for containing other items, and are widely used due to the advantages of low price, extremely light weight, large capacity and convenient storage. The plastic bag is also often used for splendid attire fruit, vegetables, and traditional plastic bag's antibacterial ability is relatively poor, breeds the bacterium easily, if use its splendid attire article such as fruit, vegetables for a long time, its rot is accelerated easily.
In daily life, no matter in business and super, the paper diapers are often stocked in families, the storage environment is different according to the region or season, and the antibacterial plastic packaging bag for the paper diapers, which is high in antibacterial capacity and not easy to breed bacteria, is beneficial to stable storage of the paper diapers in the quality guarantee period and is reserved for later use.
Disclosure of Invention
The invention aims to provide an antibacterial plastic packaging bag for paper diapers.
In order to solve the technical problem, the technical scheme of the invention is as follows: the antibacterial plastic packaging bag for the paper diapers comprises a plastic film layer and an antibacterial non-woven fabric layer, wherein the antibacterial non-woven fabric layer comprises the following substances in parts by weight:
the antibacterial non-woven fabric layer is provided with a stretchable structure which is matched with the plastic film layer to deform under external force along the length direction of the antibacterial non-woven fabric layer.
In a further improvement, the stretchable structure comprises a wave structure along the length direction of the fibers of the non-woven fabric and V-shaped structures uniformly arranged at equal intervals along the length.
Preferably, the plastic film layer is made of a BOPP (biaxially-oriented polypropylene) base material, and the plastic film layer and the antibacterial non-woven fabric layer are bonded through acrylic resin.
The invention also aims to provide a preparation method of the antibacterial plastic packaging bag for the paper diaper, and the antibacterial non-woven fabric layer and the plastic film base layer are synchronously deformed under the action of external extrusion force by improving the ductility of the antibacterial non-woven fabric layer, so that the structural strength is effectively improved, and the waterproof and moistureproof effects are realized.
In order to solve the technical problem, the technical scheme of the invention is as follows: a preparation method of an antibacterial plastic packaging bag for a paper diaper comprises the steps of bonding an antibacterial non-woven fabric layer on the surface of a plastic film layer through acrylic resin;
the antibacterial non-woven fabric layer is prepared by the following steps:
step one, uniformly mixing fibers, polyvinyl alcohol fibers, oleic acid, chitosan and nano-cellulose according to the mass parts to prepare master batches, and slicing the master batches for later use;
step two, obtaining fibers from the slices obtained in the step one through a screw extruder;
step three, the fiber obtained in the step two is drafted by air blowing, and the drafted air flow blows the fiber to a guide roller; the guide rollers and the drafting airflow clamp the fibers to move downwards, and the fibers form a wave shape through the plurality of guide rollers;
and step four, impacting water flow to enable the wavy fibers to enter the forming through holes, enabling the middle of the fibers to be bent towards the direction far away from the water flow through water flow impact, and limiting and bending the upper end and the lower end of the fibers entering the forming through holes respectively by the upper end and the lower end of the forming through holes so as to obtain the V-shaped fibers at equal intervals.
The molding equipment for the tensile structure of the preferred antibacterial non-woven fabric layer comprises a water-air drafting mechanism positioned below the screw extruder, wherein the water-air drafting mechanism comprises a body, and an air outlet and a water outlet hole which are arranged on the body;
the body is arranged along the width direction of the screw extruder, one side opposite to the air outlet hole and the water outlet hole is provided with a baffle plate, and the baffle plate is provided with guide rollers at uniform intervals along the vertical direction; the guide roller rotates relative to the baffle;
air flow and water flow sprayed by the air outlet holes and the water outlet holes and the fibers produced by the screw extruder are clamped by the guide rollers;
the baffle is provided with a forming through hole corresponding to the water outlet hole, and water sprayed from the water outlet hole can pass through the forming through hole.
Preferably, the surface of the guide roller is uniformly distributed with acupuncture points.
Preferably still include the return water tank, apopore spun water warp the shaping through-hole gets into the return water tank.
Preferably, a water-stop plate is arranged outside the water outlet hole, and the water-stop plate blocks or concedes the water outlet hole through a driving assembly; the water-stop sheet comprises a horizontal shielding part and a vertical shielding part which are positioned on the upper side.
Preferably, an air channel and a water channel are respectively arranged in the body of the water-air drafting mechanism;
the air channel comprises a first storage area with a larger inner diameter and a first acceleration area with a smaller inner diameter;
the water channel comprises a second storage area with a larger inner diameter and a second acceleration area with a smaller inner diameter;
the first storage area is communicated with the gas supply unit;
the second storage area is communicated with the water supply unit.
The antibacterial non-woven fabric layer ensures the antibacterial property of the obtained non-woven fabric through the selection and the matching of the components and the using amount, simultaneously ensures the structural characteristics of the obtained non-woven fabric, has basically consistent deformation under the action of external force, effectively prevents water and moisture, and improves the structural stability and the antibacterial property of the packaging bag.
Thereby achieving the above object of the present invention.
Drawings
FIG. 1 is a schematic view of a cross-sectional structure of an antibacterial plastic packaging bag for a paper diaper according to the present invention;
FIG. 2 is a schematic view of an apparatus for manufacturing a nonwoven fabric layer according to the present invention;
FIG. 3 is an enlarged view at A in FIG. 2;
FIG. 4 is a perspective view of a water-air drawing mechanism for forming a nonwoven fabric layer according to the present invention;
fig. 5 is a schematic view of a water-stop sheet according to the present invention.
In the figure:
a screw extruder 1; a water-gas drawing mechanism 2; an air outlet hole 21; a water outlet hole 22; an air passage 23; a first storage area 231; a first acceleration zone 232; a water passage 24; a second storage area 241; a second acceleration region 242; a baffle 3; a guide roller 31; forming the through-hole 32; a water return tank 4; a water-stop sheet 5; a horizontal shielding portion 51; the vertical shade 52; a drive assembly 6; a plastic film layer 100; an antibacterial non-woven fabric layer 200; an acrylic resin layer 300.
Detailed Description
In order to further explain the technical solution of the present invention, the present invention is explained in detail by the following specific examples.
Example 1
The embodiment discloses an antibacterial plastic packaging bag for a paper diaper, which comprises a plastic film layer 100 and an antibacterial non-woven fabric layer 200, wherein the antibacterial non-woven fabric layer 200 comprises the following substances in parts by weight:
the antibacterial non-woven fabric layer is provided with a stretchable structure which is matched with the plastic film layer to deform under external force along the length direction of the antibacterial non-woven fabric layer.
In the embodiment, the antibacterial non-woven fabric layer is bonded to the surface of the plastic film layer through acrylic resin; wherein the thickness of the BOPP is 35 μm, the thickness of the acrylic resin is 10 μm, and the thickness of the antibacterial non-woven fabric layer is 20 μm, wherein the protruding portions of the V-shaped fibers of the non-woven fabric extend into the acrylic resin layer 300.
The antibacterial non-woven fabric in the embodiment is prepared by the following steps:
step one, uniformly mixing fibers, polyvinyl alcohol fibers, oleic acid, chitosan and nano-cellulose according to the mass parts to prepare master batches, and slicing the master batches for later use;
secondly, the slices obtained in the first step are processed by a screw extruder 1 to obtain fibers;
step three, the fiber obtained in the step two is drafted by air blowing, and the drafted air flow blows the fiber to a guide roller; the guide roller 31 and the drafting airflow clamp the fibers to move downwards, and the fibers form a wave shape through a plurality of guide rollers;
and step four, impacting water flow to enable the wavy fibers to enter the forming through holes, bending the fiber middle in the direction away from the water flow direction through water flow impact, and limiting and bending the upper end and the lower end of the fiber entering the forming through holes 32 by the upper end and the lower end of the forming through holes respectively to obtain the V-shaped fibers with equal intervals.
The molding equipment for the tensile structure of the preferred antibacterial non-woven fabric layer comprises a screw extruder 1 and a water-air drafting mechanism 2 positioned below the screw extruder 1, wherein the water-air drafting mechanism 2 comprises a body, and an air outlet 21 and an water outlet 22 which are arranged on the body; the body is arranged along the width direction of the screw extruder 1, one side of the body opposite to the air outlet hole 21 and the water outlet hole 22 is provided with a baffle 3, and the baffle 3 is provided with guide rollers 31 at uniform intervals along the vertical direction; the guide roller 31 rotates relative to the baffle 3; the air flow and the water flow sprayed from the air outlet holes 21 and the water outlet holes 22 and the guide roller 31 clamp the fibers produced by the screw extruder 1; baffle 3 be equipped with the corresponding shaping through-hole 32 of apopore 22, shaping through-hole 32 supplies the rivers of apopore 22 spun to pass through.
In the process of forming the fibers used in the lining nonwoven thin fabric layer 100in this embodiment, the air flow, the guide roller 31 and the water flow are all favorable for fiber opening, the fibers prepared by the invention have small diameters, the contact area of the antibacterial component of the lining nonwoven thin fabric layer 100 with the external environment is large, and the obtained lining nonwoven thin fabric layer 100 is also favorable for adsorbing more water molecules, so that the phenomenon that water vapor condenses inside the package along with the change of temperature to pollute the diaper is avoided.
In this embodiment, the surface of the guide roller 31 is uniformly distributed with needle pricks. The acupuncture cooperates fibrous removal at the pivoted in-process of guide roll 31, also improves fibrous pore-forming effect simultaneously through the acupuncture, further improves the antibiotic effect and the structural strength of inside lining non-woven fabrics layer 100. The present invention further provides more sites and spaces for the adsorption of water molecules by providing the specific surface area and the hollow structure inside the nonwoven fibers.
The water-saving device further comprises a water return tank 4, and water sprayed from the water outlet hole 22 enters the water return tank 4 through the forming through hole 32. Water flow sprayed from the water outlet hole 22 flows back to the water return tank 4 through the forming through hole 32, so that contact between water and fibers is effectively controlled, splashing of the water is reduced, and production environment is affected.
In this embodiment the outside of apopore 22 is equipped with a water-stop sheet 5, water-stop sheet 5 shelters from or abdicates through drive assembly 6 apopore 22. According to the invention, the water-stop sheet 5 is intermittently controlled to move up and down, so that the fibers are equally spaced to form a V shape, which is beneficial to realizing the function of the lining non-woven thin fabric layer 100 on one hand, and the obtained lining non-woven thin fabric layer 100 has certain elasticity, which is beneficial to realizing synchronous deformation with a BOPP film on the other hand, and improves the use strength of the obtained packaging bag.
In this embodiment, the driving assembly 6 is located above the water-stop sheet 5; the water-stop sheet 5 includes a horizontal shielding portion 51 and a vertical shielding portion 52 on the upper side. The baffle 3 prevents the shielded water flow from splashing upwards to affect the screw extruder 1.
The air outlet 21 in the embodiment is communicated with an air supply unit; the water outlet 22 is communicated with the water supply unit.
In this embodiment, the body of the water-air drafting mechanism 2 is provided with an air channel 23 and a water channel 24 respectively;
the air passage 23 includes a first storage region 231 having a larger inner diameter and a first acceleration region 232 having a smaller inner diameter;
the water passage 24 includes a second storage region 241 having a larger inner diameter and a second acceleration region 242 having a smaller inner diameter;
the first storage area 231 is communicated with the gas supply unit;
the second storage region 241 is communicated with a water supply unit.
According to the invention, the accelerated change of the flow velocity of air and water flow is realized through the change of the inner diameters of the air channel 23 and the water channel 24, the impact of the air and the water flow on fibers is enhanced, and the formation of drafting, fiber splitting, a porous structure, a wave shape and a V shape is strengthened, so that the antibacterial non-woven fabric layer with a telescopic structure is obtained.
Example 2
The main differences between this embodiment and embodiment 1 are:
in this embodiment, the antibacterial non-woven fabric layer 200 includes the following substances in parts by weight:
example 3
The main differences between this embodiment and embodiment 1 are:
in this embodiment, the antibacterial non-woven fabric layer 200 includes the following substances in parts by weight:
comparative example BOPP films as in example 1 were used.
The moisture evaporation transmittance and the tensile strength of the packaging bags obtained in examples 1 to 3 are shown in table 1.
Table 1 comparison of the properties of the packages obtained in examples 1 to 3 with those of the comparative example
| Item | Comparative example | Example 1 | Example 2 | Example 3 |
| Water evaporation transmittance (g/100 in)2*day) | 0.32 | 0.19 | 0.17 | 0.20 |
| Tensile Strength (MPa) | 93 | 87 | 89 | 86 |
| Elongation at break | 201％ | 176％ | 182％ | 177％ |
The water evaporation transmittance in table 1 is the percentage of water that reaches the other side of the film layer by adsorption, dissolution, diffusion analysis from the outer side of the film layer. In the prior art, moisture passing through the BOPP film directly enters a packaging space, and along with the continuous change of temperature, water vapor is condensed into small water drops on the inner surface of the packaging bag and is absorbed by the paper diapers in the packaging bag, so that the long-time storage of the paper diapers is not facilitated.
According to the packaging bag obtained by the invention, water vapor further diffuses into the acrylic resin layer after passing through the BOPP layer, after water molecules entering the acrylic resin layer contact the non-woven fabric layer with polyvinyl alcohol fibers and chitosan, the non-woven fabric layer type hydrophilic components quickly adsorb the contacted water molecules to form water molecules attached to the BOPP layer, and the fibers in the non-woven fabric layer are uniformly dispersed one by one, so that a network for uniformly dispersing water molecules is formed in the packaging bag, the water vapor is prevented from being condensed on the inner surface of the packaging bag, and the water evaporation transmittance is effectively inhibited.
The water evaporation transmission rate in table 1 was calculated according to Fick's gas diffusion law as follows:
wherein dm/dt is the air permeability of the packaging bag; d is a diffusion coefficient; c is the diffusion gas concentration; s is a solubility coefficient; x is the thickness of the film; t is diffusion time; and m is the water vapor transmission capacity.
Water evaporation transmittance (g/100 in) in Table 12Day) was tested at 25 ℃ ambient temperature and 50% relative humidity.
The polypropylene fiber of the antibacterial non-woven fabric layer is used as a main material, and the polyvinyl alcohol fiber and the chitosan are matched, so that the hydrophilicity and the antibacterial performance of the non-woven fabric are effectively improved; the nano-cellulose matched with the oleic acid effectively improves the orderly arrangement of the nano-cellulose in the fiber, ensures the orderly combination and the uniform combination of the internal structure and water molecules, effectively inhibits the water molecules from being discharged to the inner side of the packaging bag, keeps the paper diaper in the packaging bag dry, and prolongs the quality guarantee period and the service performance of the paper diaper; meanwhile, the ordered arrangement of the nano-cellulose in the linear fibers of the non-woven fabric also improves the structural strength of the non-woven fabric. Although the non-woven fabric layer is microscopically and uniformly distributed with waves and V-shaped bends facing the acrylic resin layer along the length direction of the fibers, the non-woven fabric layer has a certain deformation amount, and when the packaging bag is pulled by external force, the non-woven fabric layer and the BOPP layer which are bonded with the BOPP layer are deformed in a consistent manner, so that the structural strength is stable and reliable.
Claims (9)
1. The utility model provides an antibiotic plastic packaging bag of panty-shape diapers which characterized in that: the antibacterial non-woven fabric comprises a plastic film layer and an antibacterial non-woven fabric layer, wherein the antibacterial non-woven fabric layer comprises the following substances in parts by weight:
the antibacterial non-woven fabric layer is provided with a stretchable structure which is matched with the plastic film layer to deform under external force along the length direction of the antibacterial non-woven fabric layer.
2. The antibacterial plastic packaging bag for paper diapers as claimed in claim 1, characterized in that: the stretchable structure comprises a wave structure along the length direction of the fibers of the non-woven fabric and V-shaped structures uniformly arranged at equal intervals along the length.
3. The antibacterial plastic packaging bag for paper diapers as claimed in claim 1, characterized in that: the plastic film layer is made of a BOPP base material, and the plastic film layer and the antibacterial non-woven fabric layer are bonded through acrylic resin.
4. A method for preparing the antibacterial plastic packaging bag for the paper diaper as claimed in claim 2, which is characterized in that: bonding the antibacterial non-woven fabric layer on the surface of the plastic film layer through acrylic resin;
the antibacterial non-woven fabric layer is prepared by the following steps:
step one, uniformly mixing fibers, polyvinyl alcohol fibers, oleic acid, chitosan and nano-cellulose according to the mass parts to prepare master batches, and slicing the master batches for later use;
step two, obtaining fibers from the slices obtained in the step one through a screw extruder;
step three, the fiber obtained in the step two is drafted by air blowing, and the drafted air flow blows the fiber to a guide roller; the guide rollers and the drafting airflow clamp the fibers to move downwards, and the fibers form a wave shape through the plurality of guide rollers;
and step four, impacting water flow to enable the wavy fibers to enter the forming through holes, enabling the middle of the fibers to be bent towards the direction far away from the water flow through water flow impact, and limiting and bending the upper end and the lower end of the fibers entering the forming through holes respectively by the upper end and the lower end of the forming through holes so as to obtain the V-shaped fibers at equal intervals.
5. The method of claim 4, wherein: the molding equipment of the stretchable structure of the antibacterial non-woven fabric layer comprises a water-air drafting mechanism positioned below the screw extruder, wherein the water-air drafting mechanism comprises a body, and an air outlet and a water outlet hole which are arranged on the body;
the body is arranged along the width direction of the screw extruder, one side opposite to the air outlet hole and the water outlet hole is provided with a baffle plate, and the baffle plate is provided with guide rollers at uniform intervals along the vertical direction; the guide roller rotates relative to the baffle;
air flow and water flow sprayed by the air outlet holes and the water outlet holes and the fibers produced by the screw extruder are clamped by the guide rollers;
the baffle is provided with a forming through hole corresponding to the water outlet hole, and water sprayed from the water outlet hole can pass through the forming through hole.
6. The method of claim 5, wherein: and the surface of the guide roller is uniformly distributed with acupuncture points.
7. The method of claim 5, wherein: still include the return water tank, apopore spun water warp the shaping through-hole gets into the return water tank.
8. The method of claim 5, wherein: a water-stop plate is arranged outside the water outlet hole, and the water-stop plate blocks or concedes the water outlet hole through a driving assembly; the water-stop sheet comprises a horizontal shielding part and a vertical shielding part which are positioned on the upper side.
9. The production method according to any one of claims 5 to 8, characterized in that: an air channel and a water channel are respectively arranged in the body of the water-air drafting mechanism;
the air channel comprises a first storage area with a larger inner diameter and a first acceleration area with a smaller inner diameter;
the water channel comprises a second storage area with a larger inner diameter and a second acceleration area with a smaller inner diameter;
the first storage area is communicated with the gas supply unit;
the second storage area is communicated with the water supply unit.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110422309X | 2021-04-20 | ||
| CN202110422309.XA CN113306877A (en) | 2021-04-20 | 2021-04-20 | Preparation method of antibacterial plastic packaging bag for paper diaper |
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| CN114044265A true CN114044265A (en) | 2022-02-15 |
| CN114044265B CN114044265B (en) | 2022-12-09 |
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| CN202111365773.6A Active CN114044265B (en) | 2021-04-20 | 2021-11-18 | Antibacterial plastic packaging bag for paper diaper and preparation method thereof |
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| GB1434946A (en) * | 1972-05-26 | 1976-05-12 | Anic Spa | Process for obtaining fibrid materials |
| CN204822438U (en) * | 2015-06-02 | 2015-12-02 | 佛山市正道中印包装印刷有限公司 | Compound non -woven fabrics health supplies wrapping bag of environmental protection |
| CN105696200A (en) * | 2016-03-03 | 2016-06-22 | 张家港高品诚医械科技有限公司 | Batch-type non-woven fabric melt-blowing method and non-woven fabric |
| CN106948090A (en) * | 2017-04-11 | 2017-07-14 | 大连天马可溶制品有限公司 | The preparation method and process equipment of a kind of low temperature water-soluble polyvinyl alcohol non-weaving cloth |
| CN108239822A (en) * | 2018-03-14 | 2018-07-03 | 天津工业大学 | A kind of Lyocell filament nonwovens material and preparation method thereof |
| CN108729021A (en) * | 2018-07-19 | 2018-11-02 | 铜陵熙成塑料制品有限公司 | A kind of packaging bag degradable nonwoven fabrics and preparation method thereof |
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2021
- 2021-04-20 CN CN202110422309.XA patent/CN113306877A/en not_active Withdrawn
- 2021-11-18 CN CN202111365773.6A patent/CN114044265B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1434946A (en) * | 1972-05-26 | 1976-05-12 | Anic Spa | Process for obtaining fibrid materials |
| CN204822438U (en) * | 2015-06-02 | 2015-12-02 | 佛山市正道中印包装印刷有限公司 | Compound non -woven fabrics health supplies wrapping bag of environmental protection |
| CN105696200A (en) * | 2016-03-03 | 2016-06-22 | 张家港高品诚医械科技有限公司 | Batch-type non-woven fabric melt-blowing method and non-woven fabric |
| CN106948090A (en) * | 2017-04-11 | 2017-07-14 | 大连天马可溶制品有限公司 | The preparation method and process equipment of a kind of low temperature water-soluble polyvinyl alcohol non-weaving cloth |
| CN108239822A (en) * | 2018-03-14 | 2018-07-03 | 天津工业大学 | A kind of Lyocell filament nonwovens material and preparation method thereof |
| CN108729021A (en) * | 2018-07-19 | 2018-11-02 | 铜陵熙成塑料制品有限公司 | A kind of packaging bag degradable nonwoven fabrics and preparation method thereof |
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|---|---|
| CN113306877A (en) | 2021-08-27 |
| CN114044265B (en) | 2022-12-09 |
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Denomination of invention: A paper diaper antibacterial plastic packaging bag and its preparation method Effective date of registration: 20231008 Granted publication date: 20221209 Pledgee: Industrial and Commercial Bank of China Limited Jinhua Jindong sub branch Pledgor: Jinhua Lianbin Plastic Products Co.,Ltd. Registration number: Y2023980060085 |