CN108025837A - Woven bag for granular materials - Google Patents
Woven bag for granular materials Download PDFInfo
- Publication number
- CN108025837A CN108025837A CN201680012854.9A CN201680012854A CN108025837A CN 108025837 A CN108025837 A CN 108025837A CN 201680012854 A CN201680012854 A CN 201680012854A CN 108025837 A CN108025837 A CN 108025837A
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- Prior art keywords
- sack
- valve
- polymer
- granular materials
- presented
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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
- B65D31/00—Bags or like containers made of paper and having structural provision for thickness of contents
- B65D31/14—Valve bags, i.e. with valves for filling
- B65D31/142—Valve bags, i.e. with valves for filling the filling port being formed by folding a flap connected to a side, e.g. block bottoms
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Bag Frames (AREA)
Abstract
For the sack (10) of granular materials (12), the sack (10) includes：Body (20),The body (20) limits volume and is made of textile polymer material,Body (20) includes the laminate layers set at least along the outer surface (22) of the opposite side positioned at volume of body (20),The end (30) for being arranged on its opposite extremity (24) is presented in body (20),One end (30) forms a kind of structure (34),The structure (34) is presented inner surface (37) and is configured to accommodate the outer match surface (44) of valve (40),The interior filling surface (42) with outer match surface (44) opposition is presented in valve (40),Valve (40) is made of non-woven fabric (46) and first position and the second place is presented,Opened in the first position lower valve (40) and form the path (36) limited by interior filling surface (42) so as to allow to use granular materials (12) packing volume,Closed in the second place lower valve (40) and path (36) so as to seal sack (10),When granular materials (12) abutting arrangement (34) in body (20),Valve (40) is moved to the second place from first position.
Description
Technical field
The present invention is broadly directed to sack, more particularly, to the woven bag filled with granular materials (such as cement).
Background technology
Sack for storing with transport particles material is made of a variety of materials.Such as consider to be used to storing and transporting drying
The sack of finished ground cement.The sack can be made by the paper product of relative thick, its advantage is by relatively inexpensive raw material system
.However, paper bag can only bear moisture within the relatively limited period, degrade afterwards or content be exposed to water so that
Content is not suitable for selling and uses.
In addition, during from producing to distributing to end user, paper bag may be because carrying and damage.
In order to overcome the shortcoming, some bag manufacturers manufacture the sack being made of plastics.Polybag generally compares paper bag
More resistant to water, but cost is manufactured with respect to higher.
Especially when with when compared with sack made of paper product, polybag is relatively firmly and lightweight.When by finished ground cement
During filling, sack expansion.This makes the plastics of sack stretch and its hole is become larger.This some holes allows air to be discharged out of sack,
So as to adjust pressure in sack in the filling process.If the size bigger of the size ratio finished ground cement particle of this some holes, cement
Powder may be leaked from sack.In order to avoid the leakage, most of polybags include at least one laminate layers.Laminate layers limit
The pore size of the sack of expansion is made, and reduces seepage discharge of the finished ground cement by this some holes.Laminate layers are usually covered in all sides
The whole outer surface of lid sack and its inner surface.In order to allow air to be discharged out of lamination sack while filling, sack
Some surfaces have micron perforation or nanometer perforation.
In addition, some polybags have the bottom patch of the exterior opposite extremity applied to sack.Bottom patch resistance rubs
These ends of enhancing sack are wiped, and each bottom patch includes laminate layers on either side of it.However, on the whole surface
Applying the quantity for the step of different laminate layers add manufacture sack on the body and its bottom patch of polybag, thus it is aobvious
Write the cost for adding manufacture sack.
Regardless of the material that sack is made, most of sacks have valve, and when sack is opened, the valve is used for filling baggy fabric
Son and when sack is closed the valve for sealing sack.No matter it is made of plastics or paper product, the valve all the time cannot
Form perfect sealing.
Therefore, when being filled and sealing, finished ground cement may be oozed out or leaked by valve, this may cause harmful work
Environment, and caused damages due to waste of materials.
The content of the invention
Present invention aim to address all or some above-mentioned shortcoming.
For this purpose, the present invention relates to the sack for granular materials, the sack includes：Body, the body limit
Volume and it is made of textile polymer material, body includes setting at least along the outer surface of the opposite side positioned at volume of body
The laminate layers put, body, which is presented, is arranged on the end of its opposite extremity, and an end forms a kind of structure, in the structure is presented
The interior filling surface with outer match surface opposition is presented in surface and the outer match surface for being configured to accommodate valve, valve, and valve is by non-
Yarn fabric is made and first position and the second place is presented, and opens and is formed by interior filling table in the first position lower valve
The path that face limits is so as to allow to use granular materials packing volume, in the second place lower valve and path blockade so as to hermetic bag
Son, when intrinsic granular materials abutting arrangement, valve is moved to the second place from first position.
Non-woven fabric is geotextile, by putting together small fiber in the form of piece, then passes through heat bonding, machine
Tool bonds, is bonded to its interlocking using adhesive or by zigzag pin so that fibre-fibre friction causes firmly
Fabric.
Valve is improved with the pressure of smaller more completely to inner folds or the ability collapsed using non-woven fabric manufacture valve, because
This provides improved sealing for sack.
Leakage less in sack when this causes to fill and seals, improves the health of working environment and wastes less
Granular materials.
According to an aspect of the present invention, non-woven fabric is polymer fabrics.
According to an aspect of the present invention, polymer fabrics are polypropylene.
According to an aspect of the present invention, non-woven fabric is spunbond non-woven fabric.
Spunbond non-woven fabric can be easier and more completely fold or collapse, therefore provide for sack more preferable close
Envelope.
According to an aspect of the present invention, valve has the polymer laminate layer for being only applied to outer match surface.
Due to only having laminate layers on a surface of valve, therefore sack can be made with opposite lower cost.It is excellent
Selection of land, laminate layers are air-tightness.
According to an aspect of the present invention, polymer laminate layer is made by polypropylene or polyethylene.Preferably, laminate layers by
The polymer identical with the polymer non-woven fabric of valve.Preferably, the laminate layers of valve by with the appearance at least along body
The identical polymer of laminate layers that face is set.
According to an aspect of the present invention, the bottom patch formed by textile polymer material is set on each end,
Each bottom patch has the basal surface for applying surface and exposure engaged with the respective end surface of end.
The bottom patch strengthens the end of sack and improves its durability.
According to an aspect of the present invention, each bottom patch has the polymer laminate layer for being only applied to apply surface.
Due to only having laminate layers on a surface of each bottom patch, sack therefore can with relative to it is lower into
This is made.
According to an aspect of the present invention, the textile polymer material of body includes being made of weaving polypropylene flat strip
Fabric.Preferably, textile fabric is made of the polymeric tapes of uniaxial tension, and especially by polyolefin or polypropylene strap
Composition.These bands are usually by strained polymer thin slice (particularly polyolefin or polypropylene sheet) with the 4- of their size
10 times of size is made, and wherein strand is alignd with the longitudinal direction of band and had in those directions compared to original thin
The intensity of 6-10 times of agreement that contracts a film or TV play to an actor or actress.The width of band is typically about 1.5 to 10mm, and thickness is 20 to 80 μm.
According to an aspect of the present invention, the outer surface of body includes printing ink.
Subject of the present invention further includes the method for manufacturing the above-mentioned sack for granular materials, and the described method includes following step
Suddenly：The valve made of non-woven fabric is provided；Only apply polymer laminate layer on the outer match surface of valve；And in the knot of sack
Apply valve in structure.
According to the method embodiment, the described method includes provide bottom to each opposite end of sack to mend
The step of fourth, each bottom patch have the basal surface for applying surface and exposure.
The bottom patch strengthens the end of sack and improves its durability.
According to the method embodiment, there is provided including only applying in each bottom patch the step of the patch of bottom
Add and apply polymer laminate layer on surface.
Due to only having laminate layers on a surface of each bottom patch, sack therefore can with relative to it is lower into
This is made.
According to the method embodiment, polymer laminate layer is made by polypropylene or polyethylene.
In another aspect, there is provided for the sack of granular materials, the sack includes：Body, the body limit body
Accumulate and be made of textile polymer material, body includes setting at least along the outer surface of the opposite side positioned at volume of body
Laminate layers, body, which is presented, is arranged on the end of its opposite extremity, and each end has the end surface of exposure, polymerize by weaving
The bottom patch that thing material is formed and is arranged on the end surface of each end, each bottom patch has and respective end
Surface engagement apply surface and exposure basal surface, each bottom patch have be only applied to apply surface by polymer system
Into laminate layers；One end forms a kind of structure, and the structure is presented inner surface and is configured to accommodate the outer matching of valve
The interior filling surface with outer match surface opposition is presented in surface, valve, and first position and the second place is presented in valve, at described first
Put lower valve to open and form the path limited by interior filling surface so as to allow to use granular materials packing volume, described second
Position lower valve and path blockade are so as to seal sack, and when intrinsic granular materials abuts the structure, valve is moved from first position
Move to the second place.
Bottom patch strengthens the end of sack and improves its durability.Due to only on a surface of each bottom patch
Upper to have laminate layers, sack is equally made with opposite lower cost.
Brief description of the drawings
Referring now to attached drawing, wherein：
- Figure 1A is the stereogram according to the sack filled with granular materials of embodiment of the present invention；
- Figure 1B is another stereogram of the sack of Figure 1A, wherein exposed inner so as to show that sack is filled out by granular materials
Fill；
- Fig. 2A is the figure of the sack of Figure 1A, is shown in the form of emptying and flattening；
- Fig. 2 B are another stereogram of the sack of Figure 1A, in addition show the valve of the part as sack；
- Fig. 2 C are the amplification stereogram of the valve of Fig. 2 B；
- Fig. 3 is blocki diagram of the manufacture for the method for the sack of granular materials.
Embodiment
Figure 1A and 1B is shown for receiving, storing and the sack of transport particles material 12 10.As shown in Figure 1B, when vertical
During orientation, sack 10 can be filled with granular materials 12.Can by the opening end set of sack 10 that is pressing and/or emptying
The filling pipe 14 of insertion.Granular materials 12 is supplied to sack 10 via pipe 14, causes sack 10 to be filled and expands.Work as bag
Son 10 expand when, its from flatten alteration of form into Figure 1B shown in filling shape.When thinking that sack 10 is fully filled, pipe 14
Stop supply granular materials 12.Sack 10 can have any size, and can have except the rectangular shape shown in figure
Outside shape.Sack 10 shown in Figure 1A and 1B is intended to be stored and transported with the side with maximum surface area, should
Understand that sack 10 can be stored and transported with different sides.
Any material that granular materials 12 can be made of the cereal, particle or seed of any particle diameter.Granular materials 12
Some non-limiting examples include：Flowing under finished ground cement, chemical reagent, animal feed, plastic grain and drying regime
Dynamic material.Granular materials 12 can include the material (such as powder) with superfine particle diameter, or the material (example with greater particle size
Such as vegetable seeds).Therefore, although granular materials disclosed herein 12 is usually finished ground cement, it should be understood that granular materials 12 also may be used
To be other materials or a mixture of these materials.
Fig. 2A show empty, the sack 10 (not filled by granular materials 12) under state of applanation.Sack 10 usually with
The state manufactures, and empty bag 10 has the side stacked on top of maximum surface area along it.This contributes to empty bag 10
Storage and transport.With reference to figure 2A and 2B, sack 10 includes body 20.Body 20 includes the end of the opposite extremity 24 positioned at body 20
Portion 30.One end 30 forms the structure 34 for accommodating valve 40.Discuss now to it.
Body 20 is the major part of sack 10 and provides the structure of sack 10.Its along length and width extension so as to
Restriction can be partially filled with by granular materials 12 or complete filling of maximum internal volume.Body 20 is also closing, i.e., it is logical
Cross its end 30 and form volume to maintain and store granular materials 12.Opened or closed according to valve 40, the size of the volume
It can change.As a rule, but not necessarily in all cases, body 20 is tubular fabric.Similarly, body 20 can
To be slender body.
Body 20 is made of textile polymer material.Textile polymer material is by by separated polymer yarn, bar
The fabric that band or silk thread are woven together and are formed.This is in the outer surface 22 of the opposite side positioned at volume of body 20 (i.e. not purport
On the surface that contacts with granular materials 12 and can see when being observed in the top of sack 10) on produce net-like pattern.Such as
If fruit needs, outer surface 22 can serve as basic unit, can apply printing ink in the basic unit so as to provide and sack 10
The relevant information of content.Depending on the intended application of sack 10, the polymeric material used in braid can be any
Suitable polymer.For example, if sack 10 needs improved moisture resistance, the polymer with strong repellency can be used.
Similarly, if sack 10 allows for bearing hot environment, can use has more dystectic polymer.This can be made
Some examples of the polymeric material of body 20 include the polypropylene (PP) and polyethylene (PE) of all ranks and density.With by spinning
Knit commonly known as weaving polypropylene (WPP) sack 10 of sack 10 of body 20 made of polypropylene flat strip.
Especially when compared with the sack with papery body, textile polymer body 20 relatively firmly and lightweight.For
Hole leakage is avoided passing through, applies at least on the outer surface 22 of body 20 and is laminated made of suitable polymeric layer tabletting
Layer.Laminate layers are closed or the pore size of the body 20 of limitation expansion, and reduce seepage discharge of the granular materials 12 by this some holes.
Outer surface 22 can have perforation, and the size of the perforation can change.For example, perforation can each have micron or nanoscale
Diameter.When sack 10 is filled by granular materials 12, perforation allows air to be discharged from the volume of body 20.Laminate layers are usual
The whole outer surface 22 of body 20 is covered on all sides of body 20, but can also only cover the selected portion of outer surface 22
Point.If desired, laminate layers can also apply to the inner surface with volume opposition of body 20.
The body 20 shown in figure only has two ends 30, it should be understood that can have with body 20 of different shapes
There are multiple ends 30, and the sack 10 also falls into the scope of the present invention.Also (such as spun by textile polymer material end 30
Knit polypropylene flat strip or PE) it is made.As shown in Figure 2 A, when sack 10 is stacked, flattens and emptied, end 30 is substantially
It is flat.In the flaser structure, end 30 fold inward so that store and transportational process in the volume that is occupied by sack 10
Reach minimum.End 30 each includes the end surface 32 of exposure.One end 30 has structure 34, that is, tubular shape is presented
Shape, introduces valve 40 in the structure 34, and can fill this via filling pipe 14 granular materials 12 by the valve 40
The shape complementary with structure 34 is presented in body 20, the filling pipe 14.
When sack 10 be in it is vertically-oriented when, exposed end surface 32 forms the sack being filled through also in the form of interchangeable
10 upper and lower surface.Therefore exposed end surface 32 more generally corresponds to the distal end of sack 10.
35 limiting structure 34 of opening in one of distal end by selecting end 30, and when manufacturing sack 10 by not
The inner surface of the distal end of the selected end 30 of sealing is so as to form a kind of structure 34.Structure 34 can prolong along any suitable length
Stretch, and there is cylindrical shape or other suitable shapes.Therefore structure 34 is the hollow sleeve for having single opening 35, and limit
Determine inner surface 37.
Sack 10 further includes valve 40, as illustrated by figures 2 b and 2 c.For illustrative purposes, valve 40 is discretely shown with end 30
Show, it should be understood that valve 40 can be any conduit surrounded in structure 34 and by structure 34.Valve 40 allows to use particle
12 filled bag 10 of material, and sealed after filling finishes.
Valve 40 usually has circular cross section, above-mentioned any other suitable transversal it is also possible to have the function of to provide
Face.
Outer match surface 44 and the interior filling surface 42 with outer match surface opposition is presented in valve 40.The inner surface 37 of structure 34
It is configured to accommodate the outer match surface 44 of valve 40.First position and the second place is presented in valve 40, in the first position lower valve
40 open and are formed by the interior filling path 36 that limits of surface 42 so as to allow to use 12 packing volume of granular materials, described the
Two position lower valves 40 and path 36 are closed so as to seal sack 10.
Valve 40 is made of non-woven fabric 46, as shown in Figure 2 B.Non-woven fabric be by by various processes (such as chemistry
Reason, mechanical treatment, heat treatment and solvent processing) material made of bonding or the fiber that is similarly attached together.Non-woven fabric
It is not made by working out or being knitted.They can be considered to be by fiber or long filament tangle or by with machinery, heat, change
Learn or the film perforated of solvent mode and the piece or web frame that are formed.Non-woven fabric 46 disclosed herein can have by by non-spinning
The circular cross section that the piece or net volume of textile material are formed into general tube shape.
Non-woven fabric can have many materials property, including at least increased soft compared to paper and textile polymer fabric
Softness.The increased pliability is conducive to valve 40, because it allows valve 40 easily with lower pressure and more completely inside
Fold collapses, so as to provide improved sealing for sack 10.Leakage less in sack 10, changes when this causes to fill or seals
Into working environment health and waste less granular materials 12.
Non-woven fabric 46 can be polymer fabrics, such as PP, PE, polyester or polyamide.It is poly- when being discussed in the present invention
When compound material and polymer fabrics, it should be understood that the material and fabric can include suitable additive so as to reinforcing material or
The material character of fabric.Some examples of additive include making the masterbatch of polymer coloration, PE and work for increasing elasticity
For the calcium carbonate and recycling polymer (such as PP) of filler.
Non-woven fabric 46 can also be spunbond non-woven fabric.Most of non-woven fabrics are manufactured with three phases：Networking, bonding
Handled with finishing.The manufacture of the fabric start from by the polymer fiber or long filament extruded by polymer beads arrangement in flakes or
Net.The formation of piece or net can be realized by any following technology：Dry-laying, filature fleece formation or spunbond and wet-laying.
Spunbond non-woven fabric can be made as described below.The particle vacuum of required polymer is supplied to and is arranged on extrusion
Charging station at the top of machine.Extruder makes melting of polymer pellets and homogenizes, and then transports molten polymer and passes through filter
And spinning pump.Polymer filaments curtain is formed in filament spinning component.Long filament carries out air cooling and stretches.For non-thermoplastic
Thing, without further drawing process, polymer filaments coil and are deposited on silk screen in the form of random non-thermoplastic pattern
Take, therefore form net.The net is transported to bonding calender, the bonding calender and uses heat and pressure setting final products
Physical property, such as tensile strength and elongation.Fabric can be wound after cooling.
It was observed that the spunbond non-woven fabric it is soft and in terms of sense of touch with paper and textile polymer fabric compared with it is relatively easypro
It is suitable.As described above, therefore spunbond non-woven fabric 40 can be easier and more completely fold or collapse, therefore carried for sack 10
For better seal.In addition, depending on manufacture, non-woven fabric 46 can have sufficiently high porosity to allow air
By valve 40, but porosity is still sufficiently low so as to avoid the smallest particles of granular materials 12 from passing through.
Valve 40 can be optionally laminated.More specifically, polymer laminate layer can be only applied to the outer matching list of valve 40
On face 44.In the construction, laminate layers do not apply to the interior filling surface 42 of valve 40 or its any other part.
The filling and sealing of sack 10 usually carry out as described below.When via filling 12 obturator of granular materials of pipe 14
During product, body 20 is vertically-oriented, and the filling pipe 14 is inserted into the path 36 of valve 40 and the opening 35 of structure 34.Fill the use of pipe 14
Grain material 12 fills body 20 until reaching the certain level in body 20.Via wearing in body 20 while packing volume
Air is discharged from body 20 in hole.Once filling, to required level, sack 10 is released and is fallen with its big or narrow side
On the conveyor, so that horizontal orientation be presented.
When sack 10 is in a horizontal position from vertical position transfer, the granular materials 12 in sack 10 also shifts.Work as particle
During 12 horizontal transfer of material, its final part for abutting the structure 34 in face of body 20.The part of structure 34 abuts granular material
Material 12.The part of the horizontal transfer impact structure 34 of granular materials 12 and to its apply pressure.The pressure apply successively to
The valve 40 being arranged in structure 34.Pressure forces valve 40 by being closed to inner folds or collapse, therefore avoids granular materials 12
Leakage, therefore seal sack 10.
Therefore, first position and the second place is presented in valve 40, opens and is formed by interior in the first position lower valve 40
The path 36 that filling surface 42 limits is so as to allow to use 12 packing volume of granular materials, in the second place lower valve 40 and path
36 close so as to sealing sack 10, and during 12 abutting arrangement 34 of granular materials in body 20, valve 40 is moved to from first position
The second place.
Just as discussed in more detail below, valve 40 disclosed herein can be with the pressure of smaller more completely by invaginate
Wrinkle or collapse and close, therefore improved sealing is provided for sack 10.
The length of valve 40 can greatly depend on the size of sack 10 and/or end 30.It was observed that shorter valve 40 more holds
Easily collapse, therefore provide faster and more completely seal.Shorter valve 40 also allows filling pipe 14 to penetrate structure 34 deeper into ground,
So as to reduce the possibility of remaining residual particulate material 12 in valve 40 and/or structure 34 when valve 40 is closed.One of valve 40
Possible length range includes 130mm to 150mm, and other scopes fall into the scope of the present invention.In addition, when sack 10 is transformed into water
When calming down to the second place, shorter valve 40 also facilitates ensuring that the pressure produced by the granular materials 12 in sack 10 just
Hit the opening of valve 40 and help its sealing.
In another aspect of the present invention, with reference to figure 2A and Fig. 2 B, sack 10 can have above-mentioned body 20 and bottom to mend
Fourth 33, the bottom patch 33 are formed by textile polymer material and are arranged on the end surface 32 of each end 30.Often
A end patch 33 have exposure basal surface 39 and opposition interior application surface (not shown), it is described it is interior application surface bonding or
It is otherwise attached to corresponding end surface 32.Each bottom patch 33 has the polymeric layer for being only applied to apply surface
Laminate layer.As described above, the sack 10 can also have the valve 40 being arranged in structure 34.
Bottom patch 33 strengthens the end surface 32 of sack 10.Bottom patch 33 is usually several textile polymer fabrics,
The size for the end surface 32 that the size matching of the textile polymer fabric applies.Using any suitable heat bonding technology or
Chemical bonding techniques apply bottom patch 33 to end surface 32.
Polymer laminate layer can apply to the interior application surface of each bottom patch 33.This helps sealing end surface 32
Hole, patch 33 hot weld in bottom is connected to end surface 32, to improve the durability of the end of sack 10.Polymer laminate layer
(can be polymeric layer tabletting) be only applied to the application surface of each bottom patch 33, without applying to exposed basal surface 39
Or the other parts of bottom patch 33.It is able to will be polymerize by bonding or being adhered to bottom patch 33 by polymer laminate layer
Nitride layer laminate layer is only applied to the application surface of textile polymer bottom patch 33, without applying laminate layers to bottom patch 33
Exposed to outer basal surface 39, the intensity and durability of sack 10 will not be damaged.
It is therefore to be understood that bottom patch 33 and valve 40 can optionally include laminate layers only in one surface.
Type for the polymer of " one side " lamination can change.For example, polymer laminate layer can be by controlled hot-air
Apply to PP the or PE laminates of the outer match surface 44 for applying surface and valve 40 of bottom patch 33.Mended when being only applied to bottom
During the application surface of fourth 33, polymer laminate layer contributes to the thermal weld of bottom patch 33 and the end surface 32 of sack 10.
It was observed that important economy can be realized when manufacture has the sack 10 of selective layer casting die, without significantly affecting
Structural intergrity, intensity or the durability of sack 10.Cost savings in the manufacturing process of sack 10 are usually denoted as the every of manufacture
The saving of a sack.In extensive sack manufacturing process, cost savings are notable.
According on the other hand and with reference to figure 3, there is provided method 100 of the manufacture for the sack 10 of granular materials 12.Institute
Stating method 100 includes providing the first step i of the valve 40 as made from non-woven fabric 46, so that with 12 filled bag of granular materials
10, as shown in Fig. 3 102.The method 100 further includes only applies the of polymer laminate layer in the outer match surface 44 of valve 40
Two step ii, as shown in Fig. 3 104.The method 100 is additionally included in the third step for applying valve 40 in the structure 34 of sack 10
Iii, as shown in Fig. 3 106.
The step of the method 100 can also be included to the offer bottom patch 33 of each opposite end 30 of sack 10, often
A bottom patch 33 has the basal surface 39 for applying surface and exposure.
The method 100 can also be included only to the step for applying surface and applying polymer laminate layer of each bottom patch 33
Suddenly.Polymer laminate layer can be the laminate made of polypropylene or polyethylene.
Described above is exemplary only, it will be appreciated by those skilled in the art that can modify to the embodiment above and
Without departing from invention disclosed scope.By reading the present invention, other modifications of the scope of the invention are fallen into for this area skill
Be for art personnel it will be apparent that and the modification be intended to fall under in the scope of the appended claims.
Claims (14)
1. for the sack (10) of granular materials (12), the sack (10) includes：Body (20), the body (20) limit body
Accumulate and be made of textile polymer material, body (20) includes the outer of the opposite side positioned at volume at least along body (20)
The end (30) for being arranged on its opposite extremity (24), an end (30) is presented in the laminate layers that surface (22) is set, body (20)
A kind of structure (34) is formed, the structure (34) is presented inner surface (37) and is configured to accommodate the outer match surface of valve (40)
(44), the interior filling surface (42) with outer match surface (44) opposition is presented in valve (40), and valve (40) is made of non-woven fabric (46)
And first position and the second place is presented, opens and is formed by interior filling surface (42) in the first position lower valve (40)
The path (36) of restriction is so as to allow to use granular materials (12) packing volume, in the second place lower valve (40) and path (36)
Close so as to seal sack (10), when granular materials (12) abutting arrangement (34) in body (20), valve (40) is from first
Put and be moved to the second place.
2. sack (10) according to claim 1, wherein, non-woven fabric (46) is polymer fabrics.
3. sack (10) according to claim 2, wherein, polymer fabrics are polypropylene.
4. sack (10) according to any one of claims 1 to 3, wherein, non-woven fabric (46) is spunbond non-woven fabric.
5. sack (10) according to any one of claims 1 to 4, wherein, valve (40), which has, is only applied to outer match surface
(44) polymer laminate layer.
6. sack (10) according to claim 5, wherein, polymer laminate layer is made of polypropylene or polyethylene.
7. sack (10) according to any one of claims 1 to 6, wherein, set on each end (30) poly- by weaving
There is the respective end surface (32) with end (30) to connect for the bottom patch (33) that compound material is formed, each bottom patch (33)
The basal surface (39) for applying surface and exposure of conjunction.
8. sack (10) according to claim 7, wherein, each bottom patch (33), which has, to be only applied to apply surface
Polymer laminate layer.
9. according to claim 1 to 8 any one of them sack (10), wherein, textile polymer material is included by weaving poly- third
Fabric made of alkene flat strip.
10. according to claim 1 to 9 any one of them sack (10), wherein, the outer surface (22) of body (20) includes printing
Ink.
11. the method for manufacturing the sack (10) for granular materials (12) described according to any of claims 1 to 10
(100), include the following steps：
- i- (102) provides the valve (40) made of non-woven fabric (46)；
- ii- (104) only applies polymer laminate layer on the outer match surface (44) of valve (40)；And
- iii- (106) applies valve (40) in the structure (34) of sack (10).
12. according to the method for claim 11 (100), further include to each opposite end (30) of sack (10) and bottom is provided
The step of portion's patch (33), each bottom patch (33) have the basal surface (39) for applying surface and exposure.
13. according to the method for claim 12 (100), wherein, the bottom patch (33) provided is included only at each bottom
The polymer laminate layer applied on the application surface of portion's patch (33).
14. according to claim 12 to 14 any one of them method (100), wherein, polymer laminate layer is by polypropylene or poly-
Ethene is made.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP15305343.4A EP3064444A1 (en) | 2015-03-05 | 2015-03-05 | Woven bag for granular materials |
| EP15305343.4 | 2015-03-05 | ||
| PCT/IB2016/000212 WO2016139525A1 (en) | 2015-03-05 | 2016-03-02 | Woven bag for granular materials |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108025837A true CN108025837A (en) | 2018-05-11 |
Family
ID=52627147
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201680012854.9A Pending CN108025837A (en) | 2015-03-05 | 2016-03-02 | Woven bag for granular materials |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP3064444A1 (en) |
| CN (1) | CN108025837A (en) |
| PH (1) | PH12017501587A1 (en) |
| WO (1) | WO2016139525A1 (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4049191A (en) * | 1976-02-02 | 1977-09-20 | Great Plains Bag Corporation | Block bottom valve bag |
| US4132347A (en) * | 1976-07-07 | 1979-01-02 | Showa Seitai Kogyo Kaisha Ltd. | Moisture proof bags provided with blow-in ports and method of manufacturing the same |
| DE3236770A1 (en) * | 1981-10-23 | 1983-06-16 | Barmag Barmer Maschinenfabrik Ag, 5630 Remscheid | Valve bag |
| CN1602269A (en) * | 2001-06-22 | 2005-03-30 | 鲍勃迪买提斯公司 | Flowing bag filling system and bag therefor |
| CN201660189U (en) * | 2010-02-10 | 2010-12-01 | 重庆润丰塑料制品有限公司 | Closed inclined valve port woven bag |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1868982U (en) * | 1963-01-10 | 1963-03-14 | Dynamit Nobel Ag | SACK OR BAG MADE OF PLASTIC. |
| DE3700392A1 (en) * | 1987-01-08 | 1988-07-21 | Rosewicz Horst Dipl Chem Dr | Valve for filling and automatically closing bags containing solid materials in any state |
-
2015
- 2015-03-05 EP EP15305343.4A patent/EP3064444A1/en not_active Withdrawn
-
2016
- 2016-03-02 WO PCT/IB2016/000212 patent/WO2016139525A1/en active Application Filing
- 2016-03-02 CN CN201680012854.9A patent/CN108025837A/en active Pending
-
2017
- 2017-09-04 PH PH12017501587A patent/PH12017501587A1/en unknown
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4049191A (en) * | 1976-02-02 | 1977-09-20 | Great Plains Bag Corporation | Block bottom valve bag |
| US4132347A (en) * | 1976-07-07 | 1979-01-02 | Showa Seitai Kogyo Kaisha Ltd. | Moisture proof bags provided with blow-in ports and method of manufacturing the same |
| DE3236770A1 (en) * | 1981-10-23 | 1983-06-16 | Barmag Barmer Maschinenfabrik Ag, 5630 Remscheid | Valve bag |
| CN1602269A (en) * | 2001-06-22 | 2005-03-30 | 鲍勃迪买提斯公司 | Flowing bag filling system and bag therefor |
| CN201660189U (en) * | 2010-02-10 | 2010-12-01 | 重庆润丰塑料制品有限公司 | Closed inclined valve port woven bag |
Also Published As
| Publication number | Publication date |
|---|---|
| PH12017501587A1 (en) | 2018-02-05 |
| EP3064444A1 (en) | 2016-09-07 |
| WO2016139525A1 (en) | 2016-09-09 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20180511 |
|
| WD01 | Invention patent application deemed withdrawn after publication |