CN102133960B - Manufacturing method of non-woven seamless anti-counterfeiting packing bag - Google Patents
Manufacturing method of non-woven seamless anti-counterfeiting packing bag Download PDFInfo
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- CN102133960B CN102133960B CN 201110022883 CN201110022883A CN102133960B CN 102133960 B CN102133960 B CN 102133960B CN 201110022883 CN201110022883 CN 201110022883 CN 201110022883 A CN201110022883 A CN 201110022883A CN 102133960 B CN102133960 B CN 102133960B
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Abstract
The invention discloses a non-woven seamless anti-counterfeiting packing bag and a manufacturing method thereof. The anti-counterfeiting packing bag is a sealed, seamless and integral non-woven bag; a product to be packed is placed in the non-woven bag which is formed at one time by a bonding method. The manufacturing method of the anti-counterfeiting packing bag comprises the steps of: manufacturing an inner mould and an outer mould of the non-woven seamless anti-counterfeiting packing bag, sticking non-woven fibers with adhesives on the outer surface of the inner mould, pressing and heating the non-woven fibers, de-molding, drying in air and clearing up the non-woven fibers. The non-woven seamless anti-counterfeiting packing bag has the advantages that: it is extremely difficult for a counterfeiter to imitate and duplicate the non-woven seamless anti-counterfeiting packing bags, and the product is disposable and cannot be recovered after being damaged, so the counterfeiter cannot counterfeit for the second time; the cost is low; and the packing bag is suitable for batch production and has no influence to the environment, and ordinary people can tell truth from falsehood quickly.
Description
Technical field
The present invention relates to the anti-counterfeit package bag, the seamless anti-counterfeit package bag of particularly a kind of nonwoven fabrics, and the method for making of the seamless anti-counterfeit package bag of nonwoven fabrics.
Background technology
At present brandname products by counterfeit, to forge be a mondial serious social concern extremely; This has brought great economic loss not only for the manufacturer of brandname products; Also make customer's right be damaged; Make the customer more and more distrust, cause customer's purchasing power to descend gradually, producer has been brought negative effect difficult to the appraisal product itself.The anti-pseudo problem that how to solve brandname products has become a significant problem of our times.False proof means on the existing market; Major part is a laser anti-false sign; But because the laser anti-false sign technology diffuses out already, the anti-false sign that the producer that causes faking can the Direct Production personation uses, so laser anti-false sign itself has not possessed false proof effect; Also has a kind of false proof mode; It is the false proof mode of phone or online enquiries; Each product of manufacturer production all is furnished with one and have only a unique anti-counterfeit number to be complementary with it; Whether the customer can be regular commodity through the product that phone or network inquiry are bought, but this mode is time-consuming, bothersome; Also having another kind of false proof mode is non-returnable container, but most easy imitation, ineffective security, the customer is difficult for telling truth from falsehood.The for example plastic wrapping of bottle can't be reduced in case just be destroyed, thereby reaches false proof effect, but plastic wrapping itself is economical inadequately, and plastics are nondegradable materials, can impact environment.
Summary of the invention
The objective of the invention is to: the deficiency to above-mentioned prior art provides seamless anti-counterfeit package bag of a kind of nonwoven fabrics and preparation method thereof.It has changed understanding and the understanding of people's tradition to " packing ", and disposable use can't be reduced after the destruction, makes the as easy as rolling off a log discriminating authenticity of products of general crowd, reaches false proof purpose.
The present invention is for realizing above-mentioned purpose, and the technical scheme of employing is following:
A kind of nonwoven fabrics is seamless anti-counterfeit package bag, said nonwoven fabrics is seamless, and the anti-counterfeit package bag is the non-woven bag of a sealing, seamless one, and product to be packaged is arranged in the non-woven bag, and said non-woven bag adopts the Method for bonding one-shot forming.
Wherein one or the multinomial combination of sign that has texture, pattern or product on the said nonwoven fabrics package bag surface.
The method for making of a kind of nonwoven fabrics is seamless anti-counterfeit package bag; Said nonwoven fabrics is seamless, and the anti-counterfeit package bag is the non-woven bag of a sealing, seamless one; Product to be packaged is arranged in the non-woven bag, and said non-woven bag adopts the heat viscosity method one-shot forming, and its method for making may further comprise the steps:
(1). make the internal mold of the seamless anti-counterfeit package bag of nonwoven fabrics, product to be packaged is arranged in internal mold inside, and both fit tightly the position is an integral body, and the material of this internal mold is a hot melt material;
(2). make the external mold of the seamless anti-counterfeit package bag of nonwoven fabrics, external mold is provided with temperature booster and temperature controller;
(3). the outside face at internal mold adheres to the non-woven fabrics fiber that contains adhesive;
(4). pressurized, heated, with the external mold heating, and rapidly interior external mold is linked closely, make fiber be bonded into nonwoven fabrics, form non-woven bag at the internal mold uppermost layer;
(5). arrangement is dried in the demoulding.
In the said step (1), said internal mold is an ice sheet, produces the mould of internal mold earlier according to the product to be packaged size; Product to be packaged is put into mould, gapped between mould and the product to be packaged, and water filling in mould; Product to be packaged is suspended from the water, and it is freezing to send cold chamber again to
,When superficial hardness meets the requirements of, take out, open mould afterwards, take out the product to be packaged that surface coverage has internal mold.
In the said step (2), produce external mold according to the internal mold size earlier, but the external mold assembly and disassembly, and external mold and internal mold coincide each other.
In the said step (3), fiber is evenly distributed on the plane, forms fibrage, on top layer of fiber, have the libation at an ancient wedding ceremony fiber top layer of water to contact then and evenly adhesion low amounts of water (water temperature≤30 ℃) libation at an ancient wedding ceremony with each surface of internal mold.
Said step (4) external mold heating-up temperature is not higher than the fiber fusing point, but is higher than the fusing point of adhesive.
Type of heating in said step (2) external mold is oily heating, electro heat or electromagnetism heating.
Beneficial effect of the present invention:
This anti-counterfeit package bag that adopts technique scheme to make, the fake producer extremely is difficult to imitation and duplicates, because of product is a disposal molding; Disposable use can't be restored after the destruction, and the fake producer also can not fake by secondary like this; With low cost; Be fit to producer's batch manufacturing, environment is not had influence, the general population is fine to tell truth from falsehood fast.
Description of drawings
Below in conjunction with accompanying drawing the present invention is further described.
Fig. 1 is a finished product structural representation of the present invention.
Fig. 2 is internal mold of the present invention and mould structure scheme drawing.
Fig. 3 is a cast outer mold structure scheme drawing of the present invention.
Fig. 4 is a fiber layer structure scheme drawing of the present invention.
Code name implication among the figure: 1-bottle; 2-mould; 3-ice sheet; 4-external mold; 5-fibrage; 6-fiber reference plane; A-nonwoven fabrics is seamless anti-counterfeit package bag.
The specific embodiment
Referring to Fig. 1: this nonwoven fabrics is seamless, and anti-counterfeit package bag A is a full closeding state, does not have the vestige of opening, slit and stitching, makes that the seamless anti-counterfeit package bag of nonwoven fabrics A is disposable use, destroys the back and just can't reduce.Nonwoven fabrics is seamless, and anti-counterfeit package bag A adopts Method for bonding (comprising heat viscosity method and chemical adhesion method) one-shot forming; Nonwoven fabrics is seamless, and anti-counterfeit package bag A outside face can have texture, pattern or sign etc.; Can be imprinted on the seamless anti-counterfeit package bag of nonwoven fabrics A outside face to the trade mark of product and some needed patterns, texture; Make product more attractive in appearance, and have the effect of promote products, so more can strengthen customer's purchase interest.
Being used to pack bottle with this anti-counterfeit package bag below is example, and the method for making of this anti-counterfeit package bag is described, this method may further comprise the steps:
(1) make internal mold, referring to Fig. 2: different according to the size of bottle and shape at first, make than bigger mould 2 around the bottle 1 with plastics or metallic, mould 2 can be made two perhaps multi-discs according to actual conditions, but assembly and disassembly.Mould 2 is assembled, place mould 2 middle bottle 1 then, and bottle 1 is suspended in the mould 2 with a fine rule; Keep space (preferred 1-2cm) all around, then water filling to mould 2 in makes water be full of the space (preferably 1-2cm) of 1 of mould 2 and bottle; It is freezing at last entire die 2 to be sent into cold chamber, according to the difference of product to be packaged, chooses different chilling temperatures; And this temperature is controlled at-10 ℃ to-50 ℃, when superficial hardness reaches Mohs 2-4 degree, takes out, open mould 2 afterwards; Take out the internal mold of making the seamless anti-counterfeit package bag of nonwoven fabrics A, outside the bottle 1 the certain thickness ice sheet 3 of one deck is arranged at this moment.The shape of mould 2 and ice sheet 3 can be made difformity as requested.
(2) make external mold 4, referring to Fig. 3: produce external mold according to the internal mold size, but the external mold assembly and disassembly, external mold and internal mold are identical each other, and internal mold is a convex, and external mold 4 is a spill, concavo-convex coupling.Temperature booster and temperature controller are housed in the external mold 4, can control the temperature of external mold 4 as required, type of heating can be selected oily heating, electro heat or electromagnetism heating etc. here.Attractive in appearance for the last seamless anti-counterfeit package bag of nonwoven fabrics in addition; Can on the inboard die wall of external mold 4, carve out texture, pattern or sign one or multinomial combination wherein; Make the seamless anti-counterfeit package bag of the nonwoven fabrics A that produces at last more be added with individual character; Have more the effectiveness of promote products, also play the effect of control and regulation bond area.
(3) internal mold adhering fibre, referring to Fig. 4: the method for adhering fibre has a variety ofly on the ice face, and the method that present embodiment adopts is: use the fiber that contains adhesive; Be evenly distributed in fiber as much as possible on the fiber reference plane 6, existing one-tenth net capable of using, lapping technical equipment form a comparatively fluffy fibrage 5; Packing requirements according to product to be packaged is different; The THICKNESS CONTROL of this fibrage 5 at about 10-140g/ ㎡, and is made a spot of water cellulose reference plane 6 and horizontal surface inclination certain angle on the surperficial libation at an ancient wedding ceremony of fibrage 5, but angle can not excessive (being 0 °～30 °); Not so can make fibrage 5 landings; The angle of inclination is so that water can flow down to be as the criterion, and this moment, fiberfill layer 5 went to contact the lower ice sheet of temperature 3 surfaces, because ice sheet 3 is-10 ℃ to-50 ℃; So a spot of normal-temperature water contact ice sheet 3 can solidify rapidly and stick to fibrage 5 on the ice sheet 3, needs evenly to adhere to and do not stay any space.
(4) pressurized, heated is bonded into screen cloth, and suitable heats to external mold, makes its temperature reach 80 ℃～180 ℃ of bonding required temperature, rapidly internal mold and external mold is snapped together, and makes fibrage 5 sticking reticulating, and makes the internal mold ice sheet 3 outer non-woven bags that form.Fibrous sheet material comprises: low density polyethylene (LDPE), high density polyethylene (HDPE), polypropylene, ES, polyvinylchloride, polyester, polyamide etc.
(5) external mold is taken apart, let the interior ice sheet 3 of non-woven bag melt and outflows from arrange net, dry nonwoven fabrics, and put in order, just produced the seamless anti-counterfeit package bag of nonwoven fabrics A.
Embodiment one
The concrete steps that step of the present invention (1) is made the ice sheet internal mold comprise:
At first different according to the size of bottle and shape make than bigger mould 2 around the bottle 1 with plastics or metallic, and mould 2 can be made two or multi-discs according to actual conditions, but assembly and disassembly.
It is freezing again entire die 2 to be sent into cold chamber, and temperature is controlled at-10 ℃, when superficial hardness reaches Mohs 2-4 degree, takes out.
Open mould 2 at last, take out the internal mold of making the seamless anti-counterfeit package bag of nonwoven fabrics A, outside the bottle 1 the certain thickness ice sheet 3 of one deck is arranged at this moment.
Embodiment two
The concrete steps that step of the present invention (1) is made internal mold comprise:
At first different according to the size of bottle and shape make than bigger mould 2 around the bottle 1 two or multi-disc about mould 2 can be made according to actual conditions, but assembly and disassembly with plastics or metallic.
It is freezing again entire die 2 to be sent into cold chamber, and temperature is controlled at-30 ℃, when superficial hardness reaches Mohs 2-4 degree, takes out.
Open mould 2 at last, take out the internal mold of making the seamless anti-counterfeit package bag of nonwoven fabrics A, outside the bottle 1 the certain thickness ice sheet 3 of one deck is arranged at this moment.
Embodiment three
The concrete steps that step of the present invention (1) is made internal mold comprise:
At first different according to the size of bottle and shape make than bigger mould 2 around the bottle 1 two or multi-disc about mould 2 can be made according to actual conditions, but assembly and disassembly with plastics or metallic.
It is freezing again entire die 2 to be sent into cold chamber, and temperature is controlled at-50 ℃, when superficial hardness reaches Mohs 2-4 degree, takes out.
Open mould 2 at last, take out the internal mold of making the seamless anti-counterfeit package bag of nonwoven fabrics A, outside the bottle 1 the certain thickness ice sheet 3 of one deck is arranged at this moment.
Embodiment four
The concrete steps of the internal mold adhering fibre in the step of the present invention (3) comprise:
At first use the fiber that contains adhesive, be evenly distributed in fiber as much as possible on the fiber reference plane 6, form a comparatively fluffy fibrage 5, about 10g/ ㎡.
Make water (about 5 ℃ of water temperature) on the surperficial libation at an ancient wedding ceremony of fibrage 5 then, fiber reference plane 6 tilts 5 ° with horizontal surface, but angle can not be excessive, not so can make fibrage 5 landings, and the angle of inclination is as the criterion so that normal-temperature water can flow down.
Embodiment five
The concrete steps of the internal mold adhering fibre in the step of the present invention (3) comprise:
At first use the fiber that contains adhesive, be evenly distributed in fiber as much as possible on the fiber reference plane 6, form a comparatively fluffy fibrage 5, about 40g/ ㎡.
Make water (about 10 ℃ of water temperature) on the surperficial libation at an ancient wedding ceremony of fibrage 5 then, fiber reference plane 6 tilts 10 ° with horizontal surface, but angle can not be excessive, not so can make fibrage 5 landings, and the angle of inclination is as the criterion so that normal-temperature water can flow down.
Embodiment six
The concrete steps of the internal mold adhering fibre in the step of the present invention (3) comprise:
At first use the fiber that contains adhesive, be evenly distributed in fiber as much as possible on the fiber reference plane 6, form a comparatively fluffy fibrage 5, about 80g/ ㎡.
Make water (about 20 ℃ of water temperature) on the surperficial libation at an ancient wedding ceremony of fibrage 5 then, fiber reference plane 6 tilts 15 ° with horizontal surface, but angle can not be excessive, not so can make fibrage 5 landings, and the angle of inclination is as the criterion so that normal-temperature water can flow down.
Embodiment seven
The concrete steps of the internal mold adhering fibre in the step of the present invention (3) comprise:
At first use the fiber that contains adhesive, be evenly distributed in fiber as much as possible on the fiber reference plane 6, form a comparatively fluffy fibrage 5, about 120g/ ㎡.
Make water (about 30 ℃ of water temperature) on the surperficial libation at an ancient wedding ceremony of fibrage 5 then, fiber reference plane 6 tilts 20 ° with horizontal surface, but angle can not be excessive, not so can make fibrage 5 landings, and the angle of inclination is as the criterion so that normal-temperature water can flow down.
Embodiment eight
Internal mold adhering fibre in the step of the present invention (3) adopts following method:
At first use the fiber that contains adhesive, be evenly distributed in fiber as much as possible on the fiber reference plane 6, form a comparatively fluffy fibrage 5, about 140g/ ㎡.
Then and make normal-temperature water on the surperficial libation at an ancient wedding ceremony of fibrage 5, fiber reference plane 6 tilts 25 ° with horizontal surface, but angle can not be excessive, not so can make fibrage 5 landings, and the angle of inclination is as the criterion so that normal-temperature water can flow down.
Embodiment nine
Step of the present invention (4) pressurized, heated is bonded into screen cloth and adopts following method: use the ES fiber; Suitable heats to external mold; Make its temperature reach 150 ℃, because the ES fiber comprises polypropylene and high density polyethylene (HDPE), polyacrylic fusing point is about 200 ℃; And the fusing point of high density polyethylene (HDPE) is 120～130 ℃; So rapidly internal mold and external mold are snapped together, make that the viscose glue composition high density polyethylene (HDPE) in the ES fiber melts fibrage 5 sticking reticulating, make internal mold ice sheet 3 form non-woven bags outward.
Embodiment ten
Step of the present invention (4) pressurized, heated is bonded into screen cloth and adopts following method: use the ES fiber; Suitable heats to external mold; Make its temperature reach 180 ℃, because the ES fiber comprises polypropylene and high density polyethylene (HDPE), polyacrylic fusing point is about 200 ℃; And the fusing point of high density polyethylene (HDPE) is 120-130 ℃; So rapidly internal mold and external mold are snapped together, make that the viscose glue composition high density polyethylene (HDPE) in the ES fiber melts fibrage 5 sticking reticulating, make internal mold ice sheet 3 form non-woven bags outward.
Embodiment 11
Step of the present invention (4) pressurized, heated is bonded into screen cloth and adopts following method: use polypropylene, low density polyethylene (LDPE) fiber; Suitable heats to external mold, makes its temperature reach 120 ℃, because polyacrylic fusing point is about 200 ℃; And the fusing point of low density polyethylene (LDPE) fiber is 85-115 ℃; So rapidly internal mold and external mold are snapped together, make that the viscose glue composition low density polyethylene (LDPE) in the fiber melts fibrage 5 sticking reticulating, make internal mold ice sheet 3 form non-woven bags outward.
Embodiment 12
Step of the present invention (4) pressurized, heated is bonded into screen cloth and adopts following method: use polypropylene, low density polyethylene (LDPE) fiber; Suitable heats to external mold, makes its temperature reach 150 ℃, because polyacrylic fusing point is about 200 ℃; And the fusing point of low density polyethylene (LDPE) fiber is 85-115 ℃; So rapidly internal mold and external mold are snapped together, make that the viscose glue composition low density polyethylene (LDPE) in the fiber melts fibrage 5 sticking reticulating, make internal mold ice sheet 3 form non-woven bags outward.
Embodiment 13
Step of the present invention (4) pressurized, heated is bonded into screen cloth and adopts following method: use polypropylene, low density polyethylene (LDPE) fiber; Suitable heats to external mold, makes its temperature reach 180 ℃, because polyacrylic fusing point is about 200 ℃; And the fusing point of low density polyethylene (LDPE) fiber is 85-115 ℃; So rapidly internal mold and external mold are snapped together, make that the viscose glue composition low density polyethylene (LDPE) in the fiber melts fibrage 5 sticking reticulating, make internal mold ice sheet 3 form non-woven bags outward.
Embodiment 14
Step of the present invention (4) pressurized, heated is bonded into screen cloth and adopts following method: use polypropylene, polyvinyl chloride fibre; Suitable heats to external mold, makes its temperature reach 180 ℃, because polyacrylic fusing point is about 200 ℃; And the fusing point of polyvinyl chloride fibre is 115-160 ℃; So rapidly internal mold and external mold are snapped together, make that the viscose glue composition polyvinylchloride in the fiber melts fibrage 5 sticking reticulating, make internal mold ice sheet 3 form non-woven bags outward.
Claims (6)
1. the method for making of the seamless anti-counterfeit package bag of nonwoven fabrics; Said nonwoven fabrics is seamless, and the anti-counterfeit package bag is the non-woven bag of a sealing, seamless one; Product to be packaged is arranged in the non-woven bag, and said non-woven bag adopts the heat viscosity method one-shot forming, and its method for making may further comprise the steps:
(1). make the internal mold of the seamless anti-counterfeit package bag of nonwoven fabrics, product to be packaged is arranged in internal mold inside, and both fit tightly is an integral body, and the material of this internal mold is a hot melt material;
(2). make the external mold of the seamless anti-counterfeit package bag of nonwoven fabrics, external mold is provided with temperature booster and temperature controller;
(3). the outside face at internal mold adheres to the non-woven fabrics fiber that contains adhesive;
(4). pressurized, heated, with the external mold heating, and rapidly interior external mold is linked closely, make fiber be bonded into nonwoven fabrics, form non-woven bag at the internal mold uppermost layer;
(5). arrangement is dried in the demoulding.
2. according to the method for making of the seamless anti-counterfeit package bag of the said nonwoven fabrics of claim 1, it is characterized in that: in the said step (1), said internal mold is an ice sheet; Produce the mould of internal mold earlier according to the product to be packaged size; Product to be packaged is put into mould, gapped between mould and the product to be packaged, and water filling in mould; Product to be packaged is suspended from the water, and it is freezing to send cold chamber again to
,When superficial hardness meets the requirements of, take out, open mould afterwards, take out the product to be packaged that surface coverage has internal mold.
3. according to the method for making of the seamless anti-counterfeit package bag of the said nonwoven fabrics of claim 1, it is characterized in that: in the said step (2), produce external mold according to the internal mold size earlier, but the external mold assembly and disassembly, external mold and internal mold coincide each other.
4. according to the method for making of the seamless anti-counterfeit package bag of the said nonwoven fabrics of claim 1; It is characterized in that: in the said step (3); Fiber is evenly distributed on the plane; Form fibrage, on top layer of fiber, have the libation at an ancient wedding ceremony fiber top layer of water to contact then and evenly adhesion the low amounts of water libation at an ancient wedding ceremony with each surface of internal mold.
5. according to the method for making of the seamless anti-counterfeit package bag of the said nonwoven fabrics of claim 1, it is characterized in that: said step (4) external mold heating-up temperature is not higher than the fiber fusing point, but is higher than the fusing point of adhesive.
6. according to the method for making of the seamless anti-counterfeit package bag of the said nonwoven fabrics of claim 1, it is characterized in that: the type of heating in said step (2) external mold is oily heating, electro heat or electromagnetism heating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110022883 CN102133960B (en) | 2011-01-20 | 2011-01-20 | Manufacturing method of non-woven seamless anti-counterfeiting packing bag |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110022883 CN102133960B (en) | 2011-01-20 | 2011-01-20 | Manufacturing method of non-woven seamless anti-counterfeiting packing bag |
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| Publication Number | Publication Date |
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| CN102133960A CN102133960A (en) | 2011-07-27 |
| CN102133960B true CN102133960B (en) | 2012-12-19 |
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| CN 201110022883 Expired - Fee Related CN102133960B (en) | 2011-01-20 | 2011-01-20 | Manufacturing method of non-woven seamless anti-counterfeiting packing bag |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103057806A (en) * | 2013-01-28 | 2013-04-24 | 褚万青 | Integrated anti-fake wrapper and merchandise anti-counterfeiting method |
| CN104973318A (en) * | 2014-04-01 | 2015-10-14 | 联想(北京)有限公司 | Electronic product package method and electronic product assembly |
| CN110641036A (en) * | 2019-09-02 | 2020-01-03 | 上海越达无纺制品有限公司 | Preparation method of insert type integrated hot-press forming non-woven fabric |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2005034708A1 (en) * | 2003-10-17 | 2005-04-21 | Eurofilters N.V. | Filter bag and method for the production thereof |
| CN1827481A (en) * | 2006-04-11 | 2006-09-06 | 庞岷 | Nonwoven fabrics package bag and manufacturing method thereof |
| CN101269718A (en) * | 2008-04-11 | 2008-09-24 | 李其忠 | Non-wire stitched non-woven eloth bag and preparation method thereof |
| CN201942072U (en) * | 2011-01-21 | 2011-08-24 | 肖明忠 | Non-woven seamless anti-counterfeiting packaging bag and production mould |
-
2011
- 2011-01-20 CN CN 201110022883 patent/CN102133960B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2005034708A1 (en) * | 2003-10-17 | 2005-04-21 | Eurofilters N.V. | Filter bag and method for the production thereof |
| CN1827481A (en) * | 2006-04-11 | 2006-09-06 | 庞岷 | Nonwoven fabrics package bag and manufacturing method thereof |
| CN101269718A (en) * | 2008-04-11 | 2008-09-24 | 李其忠 | Non-wire stitched non-woven eloth bag and preparation method thereof |
| CN201942072U (en) * | 2011-01-21 | 2011-08-24 | 肖明忠 | Non-woven seamless anti-counterfeiting packaging bag and production mould |
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| CN102133960A (en) | 2011-07-27 |
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