CN111115024A - Impact-resistant high-barrier flexible freight bag - Google Patents

Impact-resistant high-barrier flexible freight bag Download PDF

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Publication number
CN111115024A
CN111115024A CN201911403824.2A CN201911403824A CN111115024A CN 111115024 A CN111115024 A CN 111115024A CN 201911403824 A CN201911403824 A CN 201911403824A CN 111115024 A CN111115024 A CN 111115024A
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China
Prior art keywords
bag
layer
impact
polyester resin
resistant high
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CN201911403824.2A
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Chinese (zh)
Inventor
陈小平
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Griff Flexible Packaging Changzhou Co Ltd
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Griff Flexible Packaging Changzhou Co Ltd
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Priority to CN201911403824.2A priority Critical patent/CN111115024A/en
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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
    • B65D88/00—Large containers
    • B65D88/16—Large containers flexible
    • B65D88/1612—Flexible intermediate bulk containers [FIBC]
    • B65D88/1618—Flexible intermediate bulk containers [FIBC] double-walled or with linings
    • B65D88/1625—Flexible intermediate bulk containers [FIBC] double-walled or with linings with stiffening rigid means between the walls
    • 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
    • B32B15/00—Layered products comprising a layer of metal
    • B32B15/04—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B15/08—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
    • B32B15/09—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin comprising polyesters
    • 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
    • B32B15/00—Layered products comprising a layer of metal
    • B32B15/20—Layered products comprising a layer of metal comprising aluminium or copper
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B27/08—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/12—Layered products comprising a layer of synthetic resin next to 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
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/32—Layered products comprising a layer of synthetic resin comprising polyolefins
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/36—Layered products comprising a layer of synthetic resin comprising polyesters
    • 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
    • B32B3/00—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
    • B32B3/02—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 features of form at particular places, e.g. in edge regions
    • B32B3/08—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 features of form at particular places, e.g. in edge regions characterised by added members at particular parts
    • 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
    • B32B5/02—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
    • B32B5/022—Non-woven fabric
    • 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
    • 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
    • B32B2262/0261—Polyamide 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
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/20—Properties of the layers or laminate having particular electrical or magnetic properties, e.g. piezoelectric
    • B32B2307/206—Insulating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/30—Properties of the layers or laminate having particular thermal properties
    • B32B2307/306—Resistant to heat
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/50—Properties of the layers or laminate having particular mechanical properties
    • B32B2307/51—Elastic
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/50—Properties of the layers or laminate having particular mechanical properties
    • B32B2307/554—Wear resistance
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/50—Properties of the layers or laminate having particular mechanical properties
    • B32B2307/558—Impact strength, toughness
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/70—Other properties
    • B32B2307/724—Permeability to gases, adsorption
    • 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
    • B32B2439/00—Containers; Receptacles

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Bag Frames (AREA)

Abstract

The invention relates to the technical field of flexible freight bags, and aims to provide an impact-resistant high-barrier flexible freight bag, which has the technical scheme that: the flexible freight bag comprises a flexible freight bag body, wherein the flexible freight bag body comprises an outer bag and an inner bag, the outer bag comprises a woven outer layer, the woven outer layer is formed by weaving PE woven wires and nylon woven wires in a mixed mode, the PE woven wires are warp yarns, the nylon woven wires are weft yarns, and the weaving number ratio of the warp yarns to the weft yarns is 1.5 (1.5-3); the inner side of the weaving outer layer is provided with a waterproof breathable film layer, and the waterproof breathable film layer is formed by respectively hot-pressing and compounding PP spun-bonded non-woven fabrics at two sides of the PE high-molecular breathable film; the inner bag comprises an aluminum film bag and a reinforced connecting rib arranged between the aluminum film bag and the waterproof breathable film layer, the aluminum film bag comprises a polyester resin outer layer, an aluminum foil and a polyester resin inner layer, and the thickness ratio of the polyester resin outer layer to the aluminum foil to the polyester resin inner layer is 0.5 (0.8-1) to 0.5. The invention has the advantages of good impact resistance, strong barrier property and excellent waterproof property, and is particularly suitable for safe storage of high-temperature powder.

Description

Impact-resistant high-barrier flexible freight bag
Technical Field
The invention relates to the technical field of flexible freight bags, in particular to an impact-resistant high-barrier flexible freight bag.
Background
The flexible container is a flexible and flexible container, and is suitable for packing granular or powdered bulk goods, and has the advantages of high loading and unloading efficiency, easy packing, low cost, etc. The flexible freight bag is particularly suitable for mechanized operation, is an ideal choice for storage, packaging and transportation, and can be widely applied to the packaging of road, railway and marine transportation of bulk materials such as cement, fertilizer, salt, sugar, chemical raw materials, ore and the like. Therefore, freight bags are widely used in various countries in the world in recent years for transporting powdery and granular goods. The appearance and use of bulk bags is a qualitative revolution in the manner of shipping granular goods.
Chinese patent with publication number CN106697621B discloses an impact-resistant high-barrier composite flexible freight bag, which comprises a flexible freight bag body, wherein the flexible freight bag body is formed by hot ironing, a feed inlet is arranged in the middle of the upper part of the flexible freight bag body, a discharge outlet is arranged in the middle of the lower part of the flexible freight bag body, the flexible freight bag body consists of PE woven cloth and a nylon composite film layer, the PE woven cloth is connected through a coating film layer, the PE woven cloth is woven by PE woven wires according to the warp-weft ratio of 1 (1-2), the nylon composite film layer is formed by sequentially connecting a PE inner layer, an adhesive inner layer, a nylon layer, an adhesive outer layer and a PE outer layer, the thickness ratio of the PE inner layer, the adhesive inner layer, the nylon layer, the adhesive outer layer and the PE outer layer is 1 (0.5-1.5): (2-5) (0.5-1..
Although the PE woven cloth, the coating film layer and the nylon composite film are processed to form the flexible freight bag body through the hot ironing process in the prior art, the flexible freight bag body has better toughness and impact resistance, the vinyl polyurethane adhesive belongs to a water-based polyurethane adhesive in the actual production process, the drying speed is slow, the initial viscosity is low, the wettability to a nonpolar base material is poor, the water resistance is poor, the heat resistance is not high, the defects exist in the storage and transportation of powder with high temperature and high water absorption, the cohesiveness of the vinyl polyurethane adhesive is easily reduced, the toughness and the barrier property of the flexible freight bag are deteriorated, and the storage safety of the powder in the flexible freight bag cannot be effectively maintained. Therefore, further improvements are needed.
SUMMARY OF THE PATENT FOR INVENTION
The invention aims to provide an impact-resistant high-barrier flexible freight bag which has the advantages of good impact resistance, strong barrier property and excellent waterproof property and is suitable for long-time and long-distance safe storage of high-temperature powder.
The technical purpose of the invention is realized by the following technical scheme:
the utility model provides an impact-resistant high separation type flexible container, includes the flexible container body, be provided with the feed inlet in the middle of the flexible container body top, be provided with the discharge gate in the middle of the flexible container body bottom, the flexible container body includes outer bag and inner bag, outer bag is including weaving the skin, set up in weaving outer inboard waterproof ventilative rete, the inner bag includes the aluminium membrane bag, sets up the enhancement splice bar between aluminium membrane bag and waterproof ventilative rete.
Through adopting above-mentioned technical scheme, it forms outer bag with waterproof ventilated membrane layer to weave outer, it is higher to pack the temperature into when the inner bag, and behind the powder of easy absorption, because the gas permeability of waterproof ventilated membrane layer is good, can be fast with the heat conduction that the powder in the inner bag gived off to weaving the outer, thereby help in time with the temperature reduction of inner bag, reduce the high temperature damage of high temperature powder to the inner bag, on the other hand, waterproof ventilated membrane layer's waterproof nature is better, the barrier property of flexible container body has been improved, thereby can effectively reduce steam and get into the inner bag, and then reach the effect of keeping the interior dry nature of powder of bag.
The aluminum film bag has good barrier property and high temperature resistance, and can further enhance the barrier property of the flexible freight bag body to achieve the effect of effectively preserving powder; the reinforced connecting ribs can improve the internal connection strength of the waterproof breathable layer and the aluminum film bag, so that the impact resistance of the flexible freight bag body is further improved.
Furthermore, the inner bag and the outer bag are fixedly connected in a cold ironing mode.
By adopting the technical scheme, the cold-ironing process can effectively solve the problem of connection between the inner bag and the outer bag, and the connection strength between the inner bag and the outer bag is increased.
Further, the outer weaving layer is a mixed weaving layer of PE weaving yarns and nylon weaving yarns.
By adopting the technical scheme, the PE is odorless, nontoxic, excellent in low-temperature resistance, good in chemical stability, capable of resisting corrosion of most of acid and alkali, insoluble in common solvents at normal temperature, small in water absorption and excellent in electrical insulation property; the nylon has high wear resistance, good rebound resilience and good air permeability, and can be mixed with PE for weaving, so that the overall stability and the service durability of the outer layer of the woven fabric can be improved.
Furthermore, the PE weaving yarns are warp yarns, the nylon weaving yarns are weft yarns, and the weaving number ratio of the warp yarns to the weft yarns is 1.5 (1.5-3).
By adopting the technical scheme, the PE has high chemical stability and smaller rebound resilience, and can reduce the tensile deformation of the outer woven bag when used as the warp-wise woven yarn, thereby effectively improving the overall stability of the outer woven layer; nylon has high wear resistance and good resilience, can better adapt to the extrusion of powder to the outer bag as weft-knitted yarns, so that the weft-knitted expansion deformation of the outer bag is larger, the anti-cracking performance when the outer layer of the knitted bag is loaded with powder is improved, the impact resistance of the flexible freight bag is also improved, and the effect of prolonging the service life of the flexible freight bag is further achieved.
Further, waterproof breathable film layer includes that PP glues the non-woven fabrics, PE polymer ventilated membrane, PP glues the non-woven fabrics.
By adopting the technical scheme, the spun-bonded non-woven fabric is a fabric formed without spinning woven fabric, textile short fibers or filaments are directionally or randomly arranged to form a fiber web structure, and then the fiber web structure is reinforced by adopting methods such as mechanical, thermal bonding or chemical and the like. Because the water particles in the water vapor state are very fine, the water particles can smoothly permeate to the other side of the PE high-molecular breathable film according to the capillary motion principle, so that the vapor permeation phenomenon is generated; after the water vapor is condensed into water drops, the particles become large, and water molecules can not smoothly break away from the water drops and permeate to the other side of the PE high-molecular breathable film under the action of the surface tension of the water drops, so that the waterproof function is achieved.
Furthermore, the PP spunbonded non-woven fabric, the PE high-molecular breathable film and the PP spunbonded non-woven fabric are processed in a hot-pressing compounding mode to form the waterproof breathable film.
By adopting the technical scheme, the hot-pressing compounding mode can be used for gluing and jointing three layers of thin materials at one time, so that the production efficiency is obviously improved, and the production cost is reduced; meanwhile, the hot-pressing composite processing technology enables the PP spun-bonded non-woven fabric and the PE high-molecular breathable film to be attached more uniformly and tightly, so that the processed material is softer and has high fastness.
Further, the aluminum film bag comprises a polyester resin outer layer, an aluminum foil and a polyester resin inner layer, wherein the thickness ratio of the polyester resin outer layer to the aluminum foil to the polyester resin inner layer is 0.5 (0.8-1) to 0.5.
Through adopting above-mentioned technical scheme, polyester resin creep resistance is strong, fatigue resistance is high, wear-resisting and dimensional stability is good, is the thermoplastic resin of a high tenacity, can effectively improve the wear resistance of aluminium foil through at aluminium foil both sides hot melt coating polyester resin, and polyester resin is high with the cohesiveness of waterproof ventilated membrane simultaneously, can improve the fastness of being connected between aluminium membrane bag and the outer bag, effectively promotes the use fastness and the life of flexible container body.
Further, a PET film coating layer is further arranged on the inner side of the polyester resin inner layer.
By adopting the technical scheme, the PET film is a packaging film with comprehensive performance, has good transparency, good air tightness and aroma retention, excellent mechanical performance, the toughness of the PET film is the best of all thermoplastic plastics, the tensile strength and the impact strength of the PET film are much higher than those of common films, the stiffness is good, the size is stable, meanwhile, the PET film also has excellent heat resistance and cold resistance, and good chemical resistance and oil resistance, the PET film coating layer is arranged on the inner side of the polyester resin inner layer, the toughness, the impact resistance and the barrier property of the aluminum film bag can be further improved, and the safety and the applicability of the inner bag for storing high-temperature powder are improved.
Furthermore, the reinforced connecting ribs are one or more of nylon and polyester fiber ropes.
Through adopting above-mentioned technical scheme, strengthen the inside joint strength that the splice bar can effectively improve waterproof ventilative layer and aluminium membrane bag, and nylon, dacron fiber's intensity is high, and elasticity is better, and chemical resistance is good to can further improve the intensity of reinforcing splice bar, help improving the whole service strength of flexible container body.
Furthermore, the reinforcing connecting ribs are arranged in a staggered grid shape.
Through adopting above-mentioned technical scheme, set up the reinforcing tie point that the reinforcing tie bar can effectively increase the reinforcing tie bar into crisscross latticed for connection between aluminium membrane bag and the waterproof ventilative rete is more firm, has increased the interior support nature between aluminium membrane bag and the waterproof ventilative rete and has improved, has effectively promoted the firm in connection degree between inner bag and the outer bag.
In conclusion, the invention has the following beneficial effects:
1. the outer bag comprises a woven outer layer, the woven outer layer is formed by mixing and weaving PE woven wires and nylon woven wires, the PE is odorless and nontoxic, has excellent low-temperature resistance, good chemical stability, can resist corrosion of most of acid and alkali, is insoluble in common solvents at normal temperature, and has small water absorption and excellent electrical insulation property; the nylon has high wear resistance, good rebound resilience and good air permeability, and can be mixed with PE for weaving, so that the overall stability and the service durability of the outer layer of the weaving can be improved;
2. according to the invention, the PE braided wires are taken as warp yarns, the nylon braided wires are taken as weft yarns, the PE has high chemical stability and smaller rebound resilience, and the warp braided wires can reduce the tensile deformation of the braided outer bag, so that the overall stability of the braided outer layer is effectively improved; the nylon has high wear resistance and good rebound resilience, and can better adapt to the extrusion of powder on the outer bag as weft knitting yarns, so that the weft expansion deformation of the outer bag is larger, thereby improving the anti-cracking performance when the outer layer is knitted to load the powder, simultaneously improving the impact resistance of the flexible freight bag, and further achieving the effect of prolonging the service life of the flexible freight bag;
3. the inner bag comprises an aluminum film bag, the aluminum film bag comprises a polyester resin outer layer, an aluminum foil and a polyester resin inner layer, the aluminum film bag is good in barrier property and high-temperature resistant, the barrier property of the flexible freight bag body can be further enhanced, the effect of effectively storing powder is achieved, the polyester resin is strong in creep resistance, high in fatigue resistance, good in abrasion resistance and good in size stability, and is high-toughness thermoplastic resin, the abrasion resistance of the aluminum foil can be effectively improved by hot-melting and coating the polyester resin on the two sides of the aluminum foil, meanwhile, the adhesion between the polyester resin and the waterproof breathable film is high, the connection fastness between the aluminum film bag and the outer bag can be improved, the use fastness of the flexible freight bag body is effectively improved, and the service life of the flexible.
Drawings
FIG. 1 is a schematic view of an impact-resistant and high-barrier bulk bag according to an embodiment;
FIG. 2 is a schematic view showing the connection relationship between the woven outer layer, the waterproof breathable film layer and the inner bag in the embodiment;
fig. 3 is a schematic view of the specific internal structure of the waterproof breathable film layer and the inner bag in the embodiment.
In the figure, 1, a flexible freight bag body; 11. a feed inlet; 12. a discharge port; 13. a sling; 2. an outer bag; 21. weaving the outer layer; 22. a waterproof breathable film layer; 221. PP spun-bonded non-woven fabric; 222. a PE high-molecular breathable film; 3. an inner bag; 31. an aluminum film bag; 311. an outer layer of polyester resin; 312. aluminum foil; 313. a polyester resin inner layer; 314. a PET film coating layer; 32. and reinforcing the connecting ribs.
Detailed Description
The present invention will be described in further detail with reference to the following examples.
Example 1:
an impact-resistant high-barrier type flexible freight bag is shown in figures 1 and 2 and comprises a flexible freight bag body 1, a feed inlet 11 is arranged in the middle of the top of the flexible freight bag body 1, a discharge outlet 12 is arranged in the middle of the bottom of the flexible freight bag body 1, a hanging strip 13 is sewn and connected to the two ends of the discharge outlet 12 at the top end of the flexible freight bag body 1, the flexible freight bag body 1 comprises an outer bag 2 and an inner bag 3, and the inner bag 3 is fixedly connected with the outer bag 2 in a cold ironing mode.
As shown in fig. 2 and 3, the outer bag 2 includes a woven outer layer 21, the woven outer layer 21 is formed by weaving a mixture of PE woven filaments and nylon woven filaments, the PE woven filaments are warp filaments, the nylon woven filaments are weft filaments, and the weaving number ratio of the warp filaments to the weft filaments is 1.5: 1.5; the waterproof breathable film layer 22 is formed on the inner side of the woven outer layer 21 in a hot-pressing compounding mode, the waterproof breathable film layer 22 comprises a PP (polypropylene) spun-bonded non-woven fabric 221, a PE (polyethylene) high-molecular breathable film 222, the PP spun-bonded non-woven fabric 221, the PE high-molecular breathable film 222 and the PP spun-bonded non-woven fabric 221, and the waterproof breathable film is formed in a hot-pressing compounding mode.
As shown in fig. 2 and 3, the inner bag 3 includes an aluminum film bag 31, the aluminum film bag 31 includes an outer polyester resin layer 311, an aluminum foil 312, and an inner polyester resin layer 313, a thickness ratio of the outer polyester resin layer 311, the aluminum foil 312, and the inner polyester resin layer 313 is 0.5:0.8:0.5, and a PET film layer 314 is further disposed on an inner side of the inner polyester resin layer 313.
As shown in fig. 3, a reinforced connecting rib 32 is connected between the aluminum film bag 31 and the waterproof breathable film layer 22 by hot pressing, the reinforced connecting rib 32 is one or two of nylon and polyester fiber ropes, and the reinforced connecting rib 32 is arranged in a staggered grid shape. Set up the reinforcing tie bar into crisscross latticed reinforcing tie point that can effectively increase the strengthening tie bar 32 for be connected between aluminium membrane bag 31 and the waterproof ventilative rete 22 more firm, increased the interior stay nature improvement between aluminium membrane bag 31 and the waterproof ventilative rete 22, effectively promoted the firm in connection degree between inner bag 3 (shown in fig. 2) and the outer bag 2.
Example 2: an impact-resistant high-barrier flexible freight bag is different from the embodiment 1 in that the weaving number ratio of warp yarns to weft yarns is 1.5: 1.9.
Example 3: an impact-resistant high-barrier flexible freight bag is different from the embodiment 1 in that the weaving number ratio of warp yarns to weft yarns is 1.5: 2.3.
Example 4: an impact-resistant high-barrier flexible freight bag is different from the embodiment 1 in that the weaving number ratio of warp yarns to weft yarns is 1.5: 3.
Example 5: the difference between the impact-resistant high-barrier container bag and the container bag in example 1 is that the thickness ratio of the polyester resin outer layer 311 to the aluminum foil 312 to the polyester resin inner layer 313 is 0.5:0.9: 0.5.
Example 6: the difference between the impact-resistant high-barrier container bag and the container bag in example 2 is that the thickness ratio of the polyester resin outer layer 311 to the aluminum foil 312 to the polyester resin inner layer 313 is 0.5:0.9: 0.5.
Example 7: the difference between the impact-resistant high-barrier container bag and the container bag in example 3 is that the thickness ratio of the polyester resin outer layer 311 to the aluminum foil 312 to the polyester resin inner layer 313 is 0.5:0.9: 0.5.
Example 8: the difference between the impact-resistant high-barrier container bag and the container bag in example 4 is that the thickness ratio of the polyester resin outer layer 311 to the aluminum foil 312 to the polyester resin inner layer 313 is 0.5:0.9: 0.5.
Example 9: the difference between the impact-resistant high-barrier container bag and the container bag in example 1 is that the thickness ratio of the polyester resin outer layer 311 to the aluminum foil 312 to the polyester resin inner layer 313 is 0.5:1.0: 0.5.
Example 10: the difference between the impact-resistant high-barrier container bag and the container bag in example 2 is that the thickness ratio of the polyester resin outer layer 311 to the aluminum foil 312 to the polyester resin inner layer 313 is 0.5:1.0: 0.5.
Example 11: the difference between the impact-resistant high-barrier container bag and the container bag in example 3 is that the thickness ratio of the polyester resin outer layer 311 to the aluminum foil 312 to the polyester resin inner layer 313 is 0.5:1.0: 0.5.
Example 12: the difference between the impact-resistant high-barrier container bag and the container bag in example 4 is that the thickness ratio of the polyester resin outer layer 311 to the aluminum foil 312 to the polyester resin inner layer 313 is 0.5:1.0: 0.5.
The present embodiment is only for explaining the patent of the present invention, and it is not limited to the patent of the present invention, and those skilled in the art can make modifications of the present embodiment without inventive contribution as required after reading the present specification, but all are protected by the patent law within the scope of the claims of the present patent.

Claims (10)

1. The utility model provides an impact-resistant high separation type flexible container, includes flexible container body (1), be provided with feed inlet (11) in the middle of flexible container body (1) top, be provided with discharge gate (12) in the middle of flexible container body (1) bottom, its characterized in that: the flexible freight bag comprises a flexible freight bag body (1) and is characterized in that the flexible freight bag body (1) comprises an outer bag (2) and an inner bag (3), the outer bag (2) comprises a woven outer layer (21) and a waterproof breathable film layer (22) arranged on the inner side of the woven outer layer (21), and the inner bag (3) comprises an aluminum film bag (31) and a reinforced connecting rib (32) arranged between the aluminum film bag (31) and the waterproof breathable film layer (22).
2. The impact-resistant high-barrier bulk bag according to claim 1, wherein: the inner bag (3) and the outer bag (2) are fixedly connected in a cold ironing mode.
3. The impact-resistant high-barrier bulk bag according to claim 1, wherein: the outer weaving layer (21) is a mixed weaving layer of PE weaving yarns and nylon weaving yarns.
4. The impact-resistant high-barrier bulk bag according to claim 3, wherein: the PE weaving yarns are warp yarns, the nylon weaving yarns are weft yarns, and the weaving number ratio of the warp yarns to the weft yarns is 1.5 (1.5-3).
5. The impact-resistant high-barrier bulk bag according to claim 1, wherein: the waterproof breathable film layer (22) comprises a PP (polypropylene) spun-bonded non-woven fabric (221), a PE (polyethylene) high-molecular breathable film (222) and the PP spun-bonded non-woven fabric (221).
6. The impact-resistant high-barrier bulk bag according to claim 5, wherein: the PP spunbonded non-woven fabric (221), the PE high-molecular breathable film (222) and the PP spunbonded non-woven fabric (221) are processed in a hot-pressing compounding mode to form the waterproof breathable film.
7. The impact-resistant high-barrier bulk bag according to claim 1, wherein: the aluminum film bag (31) comprises a polyester resin outer layer (311), an aluminum foil (312) and a polyester resin inner layer (313), wherein the thickness ratio of the polyester resin outer layer (311), the aluminum foil (312) and the polyester resin inner layer (313) is 0.5 (0.8-1) to 0.5.
8. The impact-resistant high-barrier bulk bag according to claim 7, wherein: the inner side of the polyester resin inner layer (313) is also provided with a PET film coating layer (314).
9. The impact-resistant high-barrier bulk bag according to claim 1, wherein: the reinforced connecting ribs (32) are one or more of nylon and polyester fiber ropes.
10. The impact-resistant high-barrier bulk bag according to claim 9, wherein: the reinforced connecting ribs (32) are arranged in a staggered grid shape.
CN201911403824.2A 2019-12-30 2019-12-30 Impact-resistant high-barrier flexible freight bag Pending CN111115024A (en)

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CN111115024A true CN111115024A (en) 2020-05-08

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CN103010616A (en) * 2013-01-08 2013-04-03 重庆斯托赛克塑业有限责任公司 Reticular reinforcing rib for flexible freight bag and knitting machine for knitting same
CN203318907U (en) * 2013-06-04 2013-12-04 重庆斯托赛克塑业有限责任公司 Netted reinforcing rib
US20140154045A1 (en) * 2012-12-03 2014-06-05 Chi Mei Corporation Flexible freight bag and method of transferring cargo using the same
CN204846698U (en) * 2015-07-20 2015-12-09 宜兴威尼特包装袋有限公司 High-barrier packaging bag with aluminizer
CN105480609A (en) * 2014-10-10 2016-04-13 宜兴威尼特包装袋有限公司 High-barrier anti-expansion container bag
CN106697621A (en) * 2015-07-20 2017-05-24 宜兴威尼特包装袋有限公司 Impact-resistant high-barrier composite flexible freight bag
CN206840871U (en) * 2017-06-22 2018-01-05 上海是大高分子材料有限公司 A kind of macromolecule waterproof membrane
CN108162506A (en) * 2017-12-21 2018-06-15 海宁信诚包装有限公司 A kind of water-proof breathable properties packing film

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004352288A (en) * 2003-05-29 2004-12-16 Sanyo Chem Ind Ltd Flexible container bag
CN2744708Y (en) * 2004-11-17 2005-12-07 常州商隆塑胶制品有限公司 High-strength blended knitting fabrics
CN1818168A (en) * 2006-03-27 2006-08-16 陈成泗 High-strength yarn with polyvinyl coating and warp knitting cloth
US20140154045A1 (en) * 2012-12-03 2014-06-05 Chi Mei Corporation Flexible freight bag and method of transferring cargo using the same
CN103010616A (en) * 2013-01-08 2013-04-03 重庆斯托赛克塑业有限责任公司 Reticular reinforcing rib for flexible freight bag and knitting machine for knitting same
CN203318907U (en) * 2013-06-04 2013-12-04 重庆斯托赛克塑业有限责任公司 Netted reinforcing rib
CN105480609A (en) * 2014-10-10 2016-04-13 宜兴威尼特包装袋有限公司 High-barrier anti-expansion container bag
CN204846698U (en) * 2015-07-20 2015-12-09 宜兴威尼特包装袋有限公司 High-barrier packaging bag with aluminizer
CN106697621A (en) * 2015-07-20 2017-05-24 宜兴威尼特包装袋有限公司 Impact-resistant high-barrier composite flexible freight bag
CN206840871U (en) * 2017-06-22 2018-01-05 上海是大高分子材料有限公司 A kind of macromolecule waterproof membrane
CN108162506A (en) * 2017-12-21 2018-06-15 海宁信诚包装有限公司 A kind of water-proof breathable properties packing film

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Application publication date: 20200508