CN114851665A - Anti-tearing blow-moulding film and preparation process thereof - Google Patents
Anti-tearing blow-moulding film and preparation process thereof Download PDFInfo
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- CN114851665A CN114851665A CN202210586894.1A CN202210586894A CN114851665A CN 114851665 A CN114851665 A CN 114851665A CN 202210586894 A CN202210586894 A CN 202210586894A CN 114851665 A CN114851665 A CN 114851665A
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Images
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- 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
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- 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
- B29C48/0021—Combinations of extrusion moulding with other shaping operations combined with joining, lining or laminating
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- 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
- B29C48/022—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the choice of material
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- 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
- B29C48/09—Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels
- B29C48/10—Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels flexible, e.g. blown foils
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B32B3/26—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer
- B32B3/30—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer characterised by a layer formed with recesses or projections, e.g. hollows, grooves, protuberances, ribs
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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
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B32B2307/00—Properties of the layers or laminate
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B32B2307/00—Properties of the layers or laminate
- B32B2307/50—Properties of the layers or laminate having particular mechanical properties
- B32B2307/582—Tearability
- B32B2307/5825—Tear resistant
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B32B2439/00—Containers; Receptacles
- B32B2439/02—Open containers
- B32B2439/06—Bags, sacks, sachets
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)
Abstract
The invention discloses an anti-tearing stretch blow-molded film and a preparation process thereof, relates to a packaging bag, and aims to solve the problem that the normal use of a film bag is influenced due to the fact that the film bag is easy to deform under the pulling action of hands and seriously deformed and damaged, and the technical scheme is as follows: including being formed with the base member that is tubular structure through the blow molding, the base member includes inlayer and skin, and outer surface is formed with and is located base member periphery wall upper abrasive portion, and a plurality of abrasive portion set up along the length direction of base member, are equipped with the cloth layer that bonds with the base member between the adjacent abrasive portion. According to the invention, through the arrangement of the cloth layer, the tear resistance and puncture resistance of the film can be improved, the service life of the film and the film bag is prolonged, the high-density outer layer is made of polyvinyl chloride, and the polyvinyl chloride has the advantages of flame retardance (the flame retardant value is more than 40), high chemical resistance, good mechanical strength and good electrical insulation, can improve the comprehensive capacity of the film, and has good strength.
Description
Technical Field
The invention relates to a packaging bag, in particular to a tear-resistant stretch blow molding film and a preparation process thereof.
Background
The plastic packaging bag is a packaging bag which uses plastic as a raw material and is used for producing various articles in daily life, and is widely used in daily life and industrial production.
The film bag on the market is made of a blown film, and can play a good dustproof role after the film bag is used for packaging articles, but when people carry and pull articles such as quilts, the film bag is easy to deform under the pulling effect of hands, so that the serious deformation and damage are caused, and the normal use of the film bag is influenced.
Therefore, a new solution is needed to solve this problem.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide an anti-tearing stretch blow-molded film and a preparation process thereof.
The technical purpose of the invention is realized by the following technical scheme: the utility model provides an anti-tear drawing blown film and preparation technology thereof, includes that it is the base member of tubular structure to be formed with through the blow molding, the base member includes inlayer and skin, outer surface is formed with and is located the dull polish portion on the base member periphery wall, and is a plurality of the length direction setting of dull polish portion along the base member is adjacent be equipped with the cloth layer that bonds with the base member between the dull polish portion.
Through adopting above-mentioned technical scheme, the basic unit adopts inlayer and outer complex to be a body structure, good wholeness has, when making the film bag with this film, good bulk strength has, because outer surface forms dull polish portion, can increase the roughness on base member surface, dull polish portion sets up along base member length direction simultaneously, can realize people when carrying and drawing the film bag, improve the tensile strength of the bag body along base member length direction, and through the setting on cloth layer, can improve tearing of film, the performance of puncture, the life of improvement film and film bag.
The invention is further configured to: the density of the outer layer is greater than that of the inner layer, the outer layer comprises a convex portion located on the frosted portion and a concave portion bonded with the cloth layer, and the thickness of the convex portion is greater than that of the concave portion.
By adopting the technical scheme, because the density of the outer layer is greater than that of the inner layer, the strength of the film can be improved through the high-density outer layer under the condition of keeping the thickness of the film, the texture of the inner layer with low density is soft, the integral strength of the base body can be integrated, the thicker convex part and the smaller concave part are formed in the outer layer during blow molding, when the cloth layer is adhered to the concave part, the flatness of the surface of the base body is improved, and the cloth layer is accommodated to improve the integrity of the film.
The invention is further configured to: the cloth layer is a non-woven fabric layer, and the non-woven fabric layer is in a net structure formed by tiling a plurality of tensile filaments.
By adopting the technical scheme, the fabric layer is the non-woven fabric layer, and the non-woven fabric layer has the characteristics of light weight and softness, so that the tensile strength and puncture resistance of the film are improved, and meanwhile, the softness of the film is ensured.
The invention is further configured to: the tensile filament is polyester filament, polypropylene filament or Kevlar filament.
By adopting the technical scheme, the long fibers made of the terylene, the polypropylene or the Kevlar are selected as the materials of the non-woven fabric layer, so that the tensile strength and the wear-resisting property of the fabric layer can be improved, and the service life of the film is further prolonged.
The invention is further configured to: the inner layer is formed by blow molding of low-density polyethylene or polypropylene, and the outer layer is of an integral structure formed by blow molding of high-density polyethylene.
By adopting the technical scheme, the inner layer is made of the low-density polyethylene material or the polypropylene material, the heat adhesiveness and the low-temperature heat sealability of the film can be improved, the film can be conveniently sealed when a bag is made, the high-density polyethylene material is selected for the high-density outer layer, has the advantages of flame retardance (the flame retardant value is more than 40), high chemical resistance, good mechanical strength and electrical insulation property, can improve the comprehensive capacity of the film, and has good strength.
The invention is further configured to: the frosted part is made of an aluminum-plated film and is adhered to the convex part along the length direction of the base body.
By adopting the technical scheme, the frosted part is made of the aluminum-plated film, so that the effects of good shading and ultraviolet resistance can be achieved, the brightness of the film is improved, and a good distinguishing effect is achieved.
A preparation process of a tear-resistant stretch blow-molded film is used for preparing the tear-resistant stretch film and comprises the following preparation steps:
s1 material preparation, respectively preparing master batch raw materials of an inner layer and an outer layer according to the proportion, wherein the master batch raw materials of the outer layer comprise:
80-91% of high-density polyethylene;
1-2% of antioxidant;
1 to 2 percent of ultraviolet absorbent
5-8% of a toughening agent;
the master batch of the inner layer comprises the following raw materials:
65-70% of low-density polyethylene;
10-25% of linear low-density polyethylene;
5-8% of a coupling agent;
2-5% of short fiber mixture;
s2, mixing the materials, respectively feeding the master batch materials of the outer layer and the inner layer into two screw extruders for melt extrusion to obtain a blow molding material in a molten state, and setting the melting temperatures of the two screw extruders to be 105-115 ℃ and 130-135 ℃ respectively;
s3, performing extrusion blow molding, namely simultaneously blowing the melted blow molding materials of the inner layer and the outer layer through a blow molding die head to form a film semi-finished product with a double-layer structure, and cooling;
s4 compounding cloth layers, coating viscose glue on the concave part of the outer layer before the non-woven cloth is coiled on the semi-finished film, compounding the non-woven cloth on the outer layer in parallel, drying by low-temperature hot air and then coiling.
By adopting the technical scheme, the short fiber mixture is added into the master batch raw material of the inner layer, and is mixed with the low-density polyethylene and the linear low-density polyethylene according to the proportion, the inner layer film is enhanced and modified, and the fiber short fibers are fully mixed with the low-density polyethylene and the linear low-density polyethylene in the heating and melting stage, so that the strength and the hardness are greatly improved, and the shrinkage temperature is reduced.
The invention is further configured to: the blow molding die head comprises an outer core and an inner core which are sleeved with each other, an inner blow molding flow channel used for containing blow molding materials under the hot melting condition is formed between the outer core and the inner core, an inner air outlet is formed in the axis of the inner core and is coaxial with the inner blow molding flow channel, an outer blow molding flow channel and a balance air outlet are formed in the outer core and are coaxial with the inner blow molding flow channel, and the balance air outlet is formed between the outer blow molding flow channel and the inner blow molding flow channel.
Through adopting the above-mentioned technical scheme, the blowing die head that adopts the outer core and the inner core that the cover was established, interior blowing runner and outer blowing runner through the formation, realize that the blowing material of extruding through twice screw extruder hot melt carries out the blown film shaping operation in step through interior blowing runner and outer blowing runner respectively, and set up interior air outlet and balanced air outlet, when interior air-out carries out the blown film to inlayer and skin, air outlet is to outer wind pressure in balancing through balanced air outlet, realize that inlayer and outer blowing anterior segment can the mutual noninterference blow up, because outer surface temperature is greater than the temperature of inlayer in the back end stage, realize inlayer and outer complex.
The invention is further configured to: the wind pressure of the balance air outlet is smaller than that of the inner air outlet.
Through adopting above-mentioned technical scheme, the wind pressure of balanced air outlet is less than the wind pressure of interior air outlet, realizes integrative blowing to the integrity of outer layer blowing effect is ensured.
In conclusion, the invention has the following beneficial effects:
the basic unit adopts inlayer and outer complex to be a body structure, good wholeness has, when making the film bag with this film, good bulk strength has, because outer surface forms dull polish portion, can increase the roughness on base member surface, dull polish portion sets up along base member length direction simultaneously, can realize people when carrying and draw the film bag, improve the tensile strength of the bag body along base member length direction, and through the setting on cloth layer, can improve tearing of film, the performance of puncture, improve the life of film and film bag.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a cross-sectional view of the present invention;
FIG. 3 is a schematic structural view of a cloth layer of the present invention;
FIG. 4 is a perspective view of a blow mold head of the present invention;
FIG. 5 is an enlarged schematic view at A in FIG. 4;
FIG. 6 is a schematic diagram of the construction of a blow mold head according to the present invention;
fig. 7 is a cross-sectional view at B-B in fig. 6.
In the figure: 1. a substrate; 2. an inner layer; 3. an outer layer; 4. a frosted portion; 5. a cloth layer; 6. a convex portion; 7. a recess; 8. a tensile filament; 9. an outer core; 10. an inner core; 11. an internal blow molding runner; 12. an inner air outlet; 13. An outer blow molding runner; 14. and balancing the air outlet.
Detailed Description
The invention is described in detail below with reference to the figures and examples.
The utility model provides an anti tear stretch blow molding film and preparation technology, as shown in fig. 1 and fig. 2, including being formed with the base member 1 that is the tubular structure through the blow molding, base member 1 includes inlayer 2 and skin 3, the density of skin 3 is greater than the density of inlayer 2, skin 3's surface is formed with dull polish portion 4 that is located base member 1 periphery wall, a plurality of dull polish portions 4 set up along the length direction of base member 1, be equipped with the cloth layer 5 that bonds with base member 1 between the adjacent dull polish portion 4, wherein, inlayer 2 is formed by low density polyethylene or polypropylene material blow molding, skin 3 is become an organic whole structure by polyvinyl chloride material blow molding, specifically, in this embodiment, choose low density polyethylene material and polyvinyl chloride material for use to throw respectively to two hot melt extruders, extrude the blow molding through same mold core and form compound bilayer structure.
As shown in fig. 2 and 3, the outer layer 3 includes a convex portion 6 located on the frosted portion 4 and a concave portion 7 adhered to the fabric layer 5, the thickness of the convex portion 6 is greater than that of the concave portion 7, specifically, the size of the opening of the extrusion opening of the outer layer 3 of the mold core is adjusted, when hot-melt material is extruded through the extrusion opening, the structure of the convex portion 6 and the concave portion 7 integrated with the outer layer 3 is realized, and the fabric layer 5 is a non-woven fabric layer, the non-woven fabric layer is tiled by a plurality of tensile filaments 8 to form a net structure, wherein the tensile filaments 8 are polyester filaments, polypropylene filaments or kevlar filaments, and the frosted portion 4 is made of an aluminum-plated film and is pasted to the convex portion 6 along the length direction of the base 1.
The working principle is as follows: people seal the film which is blown into an integral structure and is a double-layer composite by a sealing machine, because the inner layer 2 adopts a low-density polyethylene material or a polypropylene material, the film has good connection strength when the sealing machine seals, and the outer layer 3 with high density adopts a polyvinyl chloride material, because the polyvinyl chloride has the advantages of flame retardance (the flame retardance value is more than 40), high chemical resistance, good mechanical strength and good electrical insulation, the comprehensive capacity of the film can be improved, the integral strength of the film can be improved, and the film has good flame retardance, corrosion resistance and mechanical strength, because the outer layer 3 is integrally formed into a cylindrical structure by a convex part 6 and a concave part 7 during the blowing process, the aluminized film on the surface of the convex part 6 can play the roles of reflecting light, shading and preventing ultraviolet rays, can play a good marking role during the packaging and transportation, and the cloth layer 5 which is positioned on the surface of the concave part 7 and is bonded by a non-woven cloth layer, the film bag has the advantages that the film bag can well protect the surface of a film, the non-woven fabric layer has the characteristics of light weight and softness, the tensile strength and puncture resistance of the film are improved, meanwhile, the softness of the film is guaranteed, people can hold the aluminized film or the fabric layer 5 when packaging and pulling the film bag, the holding acting force of people is increased, the tear resistance and deformation resistance of the film in the pulling process are improved, and the service life of the film is prolonged.
Example II,
As shown in fig. 4 to 7, a process for preparing a tear-resistant blown film, which is used to prepare the tear-resistant film of the first embodiment, includes the steps of:
s1 preparing materials, respectively preparing master batch raw materials of the inner layer 2 and the outer layer 3 according to the proportion, wherein the master batch raw material of the outer layer 3 comprises:
80% of high-density polyethylene;
1% of antioxidant;
ultraviolet absorbent 1%
5% of a toughening agent;
the master batch of the inner layer 2 comprises the following raw materials:
65% of low-density polyethylene;
25% of linear low density polyethylene;
5% of a coupling agent;
5% of short fiber mixture;
s2, mixing the materials, respectively feeding the master batch materials of the outer layer 3 and the inner layer 2 into two screw extruders for melt extrusion to obtain a blow molding material in a molten state, and setting the melting temperatures of the two screw extruders to be 105-135 ℃ and 130-135 ℃ respectively;
s3, extrusion blow molding, simultaneously blow molding the melted blow molding materials of the inner layer 2 and the outer layer 3 through a blow molding die head to form a film semi-finished product with a double-layer structure, cooling, wherein, the blow molding die head comprises an outer core 9 and an inner core 10 which are mutually sleeved, an inner blow molding runner 11 for containing blow molding materials under the hot melting condition is formed between the outer core 9 and the inner core 10, an inner air outlet 12 which is coaxial with the inner blow molding runner 11 is arranged at the axis of the inner core 10, an outer blow molding runner 13 which is coaxial with the inner blow molding runner 11 and a balance air outlet 14 which is positioned between the outer blow molding runner 13 and the inner blow molding runner 11 are arranged on the outer core 9, and the wind pressure of the balance air outlet 14 is smaller than that of the inner air outlet 12, the outer blow molding flow channel is provided with symmetrically arranged flow expansion parts, the thickness of the flow expansion parts is larger than the caliber of the rest parts of the outer blow molding flow channel, and the outer layer 3 naturally forms the concave part 7 and the convex part 6 when the molten material is blown.
S4 compounding cloth layers, coating viscose on the concave part 7 of the outer layer 3 before winding the non-woven cloth on the semi-finished film, compounding the non-woven cloth on the outer layer 3 in parallel, drying by low-temperature hot air, and winding.
Example III,
As shown in fig. 4 to 7, a process for preparing a tear-resistant blown film, which is used to prepare the tear-resistant film of the first embodiment, includes the steps of:
s1 preparing materials, respectively preparing master batch raw materials of the inner layer 2 and the outer layer 3 according to the proportion, wherein the master batch raw material of the outer layer 3 comprises:
91% of high-density polyethylene;
1% of antioxidant;
2 percent of ultraviolet absorbent
5% of a toughening agent;
the master batch of the inner layer 2 comprises the following raw materials:
70% of low-density polyethylene;
10% of linear low density polyethylene;
8% of a coupling agent;
2% of short fiber mixture;
s2, mixing the materials, respectively feeding the master batch materials of the outer layer 3 and the inner layer 2 into two screw extruders for melt extrusion to obtain a blow molding material in a molten state, and setting the melting temperatures of the two screw extruders to be 105-135 ℃ and 130-135 ℃ respectively;
s3, extrusion blow molding, simultaneously blow molding the melted blow molding materials of the inner layer 2 and the outer layer 3 through a blow molding die head to form a film semi-finished product with a double-layer structure, cooling, wherein, the blow molding die head comprises an outer core 9 and an inner core 10 which are mutually sleeved, an inner blow molding runner 11 for containing blow molding materials under the hot melting condition is formed between the outer core 9 and the inner core 10, an inner air outlet 12 which is coaxial with the inner blow molding runner 11 is arranged at the axis of the inner core 10, an outer blow molding runner 13 which is coaxial with the inner blow molding runner 11 and a balance air outlet 14 which is positioned between the outer blow molding runner 13 and the inner blow molding runner 11 are arranged on the outer core 9, and the wind pressure of the balance air outlet 14 is smaller than that of the inner air outlet 12, the outer blow molding flow channel is provided with symmetrically arranged flow expansion parts, the thickness of the flow expansion parts is larger than the caliber of the rest parts of the outer blow molding flow channel, and the outer layer 3 naturally forms the concave part 7 and the convex part 6 when the molten material is blown.
S4 compounding cloth layers, coating viscose on the concave part 7 of the outer layer 3 before winding the non-woven cloth on the semi-finished film, compounding the non-woven cloth on the outer layer 3 in parallel, drying by low-temperature hot air, and winding.
The above description is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments, and all technical solutions belonging to the idea of the present invention belong to the protection scope of the present invention. It should be noted that modifications and embellishments within the scope of the invention may occur to those skilled in the art without departing from the principle of the invention, and are considered to be within the scope of the invention.
Claims (9)
1. An anti-tearing stretch blow molding film and a preparation process thereof are characterized in that: including being formed with base member (1) that is tubular structure through the blow molding, base member (1) includes inlayer (2) and skin (3), the surface of skin (3) is formed with and is located base member (1) periphery wall dull polish portion (4), and is a plurality of dull polish portion (4) set up along the length direction of base member (1), and are adjacent be equipped with cloth layer (5) that bond with base member (1) between dull polish portion (4).
2. The tear resistant stretch blow molded film of claim 1, wherein: the density of the outer layer (3) is greater than that of the inner layer (2), the outer layer (3) comprises convex portions (6) located on the frosted portions (4) and concave portions (7) bonded with the cloth layer (5), and the thickness of the convex portions (6) is greater than that of the concave portions (7).
3. The tear resistant stretch blow molded film of claim 1, wherein: the cloth layer (5) is a non-woven cloth layer, and the non-woven cloth layer is formed by tiling a plurality of tensile filaments (8) into a net structure.
4. The tear resistant stretch blow molded film of claim 3, wherein: the tensile filament (8) is a polyester filament, a polypropylene filament or a Kevlar filament.
5. The tear resistant stretch blow molded film of claim 1, wherein: the inner layer (2) is formed by blow molding of low-density polyethylene or polypropylene, and the outer layer (3) is of an integral structure formed by blow molding of high-density polyethylene.
6. The tear resistant stretch blow molded film of claim 2, wherein: the frosted part (4) is made of an aluminum-plated film and is adhered to the convex part (6) along the length direction of the base body (1).
7. A preparation process of an anti-tearing stretch blow molding film is characterized by comprising the following steps: for use in making a tear-resistant film according to any one of claims 1-6, comprising the steps of:
s1 material preparation, wherein master batch raw materials of the inner layer (2) and the outer layer (3) are respectively configured according to the proportion, and the master batch raw materials of the outer layer (3) comprise:
80-91% of high-density polyethylene;
1-2% of antioxidant;
1 to 2 percent of ultraviolet absorbent
5-8% of a toughening agent;
the master batch of the inner layer (2) comprises the following raw materials:
65-70% of low-density polyethylene;
10-25% of linear low-density polyethylene;
5-8% of a coupling agent;
2-5% of short fiber mixture;
s2, mixing the materials, respectively feeding the master batch materials of the outer layer (3) and the inner layer (2) into two screw extruders for melt extrusion to obtain a blow molding material in a molten state, and setting the melting temperatures of the two screw extruders to be 105-115 ℃ and 130-135 ℃ respectively;
s3, performing extrusion blow molding, namely simultaneously blowing the melted blow molding materials of the inner layer (2) and the outer layer (3) through a blow molding die head to form a film semi-finished product with a double-layer structure, and cooling;
s4 compounding cloth layers, coating viscose glue on the concave part of the outer layer (3) before the non-woven cloth is coiled on the semi-finished film, compounding the non-woven cloth on the outer layer (3) in parallel, drying by low-temperature hot air and then coiling.
8. A process for making a tear-resistant, stretch-blown film according to claim 7, wherein: the blow molding die head comprises an outer core (9) and an inner core (10) which are sleeved with each other, an inner blow molding runner (11) used for containing a hot-melt condition blow molding material is formed between the outer core (9) and the inner core (10), an inner air outlet (12) which is coaxial with the inner blow molding runner (11) is arranged at the axis of the inner core (10), an outer blow molding runner (13) which is coaxial with the inner blow molding runner (11) is arranged on the outer core (9), and a balance air outlet (14) which is positioned between the outer blow molding runner (13) and the inner blow molding runner (11) is arranged on the outer core (9).
9. A process for making a tear-resistant, stretch-blown film according to claim 8, wherein: the wind pressure of balanced air outlet (14) is less than the wind pressure of interior air outlet (12), outer blow molding runner (13) are equipped with the expanding flow portion that the symmetry set up, the thickness that expands flow portion is greater than the bore at all the other positions of outer blow molding runner.
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Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008087780A (en) * | 2006-09-29 | 2008-04-17 | Dainippon Printing Co Ltd | Packing material, and self-supporting bag, and gusset bag using the packing material |
| KR100889249B1 (en) * | 2007-10-30 | 2009-03-17 | 주식회사 한스물산 | House wrap film |
| KR20090109262A (en) * | 2008-04-15 | 2009-10-20 | 주식회사 한스물산 | Film for packing materials |
| CN102416746A (en) * | 2011-08-05 | 2012-04-18 | 大连方盛塑料有限公司 | Plastic substrate film for food packaging and processing technology thereof |
| CN102501513A (en) * | 2011-11-24 | 2012-06-20 | 佛山新长盛塑料薄膜有限公司 | Puncture-resistant heavy packaging composite film and preparation thereof |
| CN104191766A (en) * | 2014-09-03 | 2014-12-10 | 黄山永新股份有限公司 | Polyethylene film, packaging composite film and preparation method thereof |
| CN105904783A (en) * | 2016-04-14 | 2016-08-31 | 太仓市源创包装材料厂 | High wear resistant cloth plastic composite packaging bag |
| CN111117050A (en) * | 2019-12-25 | 2020-05-08 | 郑州市祥泰塑业有限公司 | PE blown film and preparation method thereof |
| CN215792317U (en) * | 2020-12-30 | 2022-02-11 | 河南中塑新材有限公司 | Ultra-low temperature heat-seal composite packaging bag |
| CN114347423A (en) * | 2021-12-31 | 2022-04-15 | 华南理工大学 | Multi-layer core multi-direction rotating film blow molding method and device |
-
2022
- 2022-05-26 CN CN202210586894.1A patent/CN114851665A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008087780A (en) * | 2006-09-29 | 2008-04-17 | Dainippon Printing Co Ltd | Packing material, and self-supporting bag, and gusset bag using the packing material |
| KR100889249B1 (en) * | 2007-10-30 | 2009-03-17 | 주식회사 한스물산 | House wrap film |
| KR20090109262A (en) * | 2008-04-15 | 2009-10-20 | 주식회사 한스물산 | Film for packing materials |
| CN102416746A (en) * | 2011-08-05 | 2012-04-18 | 大连方盛塑料有限公司 | Plastic substrate film for food packaging and processing technology thereof |
| CN102501513A (en) * | 2011-11-24 | 2012-06-20 | 佛山新长盛塑料薄膜有限公司 | Puncture-resistant heavy packaging composite film and preparation thereof |
| CN104191766A (en) * | 2014-09-03 | 2014-12-10 | 黄山永新股份有限公司 | Polyethylene film, packaging composite film and preparation method thereof |
| CN105904783A (en) * | 2016-04-14 | 2016-08-31 | 太仓市源创包装材料厂 | High wear resistant cloth plastic composite packaging bag |
| CN111117050A (en) * | 2019-12-25 | 2020-05-08 | 郑州市祥泰塑业有限公司 | PE blown film and preparation method thereof |
| CN215792317U (en) * | 2020-12-30 | 2022-02-11 | 河南中塑新材有限公司 | Ultra-low temperature heat-seal composite packaging bag |
| CN114347423A (en) * | 2021-12-31 | 2022-04-15 | 华南理工大学 | Multi-layer core multi-direction rotating film blow molding method and device |
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