CN108313491A - A kind of exhaust and moisture-proof FFS packaging bags - Google Patents
A kind of exhaust and moisture-proof FFS packaging bags Download PDFInfo
- Publication number
- CN108313491A CN108313491A CN201710030501.8A CN201710030501A CN108313491A CN 108313491 A CN108313491 A CN 108313491A CN 201710030501 A CN201710030501 A CN 201710030501A CN 108313491 A CN108313491 A CN 108313491A
- Authority
- CN
- China
- Prior art keywords
- exhaust
- moisture
- overlapping region
- proof
- packaging bags
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D29/00—Sacks or like containers made of fabrics; Flexible containers of open-work, e.g. net-like construction
- B65D29/02—Sacks with laminated or multiple walls
-
- 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
- B65D31/02—Bags or like containers made of paper and having structural provision for thickness of contents with laminated walls
-
- 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
- B65D33/00—Details of, or accessories for, sacks or bags
-
- 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
- B65D33/00—Details of, or accessories for, sacks or bags
- B65D33/01—Ventilation or drainage of bags
-
- 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
- B65D81/00—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents
- B65D81/24—Adaptations for preventing deterioration or decay of contents; Applications to the container or packaging material of food preservatives, fungicides, pesticides or animal repellants
- B65D81/26—Adaptations for preventing deterioration or decay of contents; Applications to the container or packaging material of food preservatives, fungicides, pesticides or animal repellants with provision for draining away, or absorbing, or removing by ventilation, fluids, e.g. exuded by contents; Applications of corrosion inhibitors or desiccators
- B65D81/261—Adaptations for preventing deterioration or decay of contents; Applications to the container or packaging material of food preservatives, fungicides, pesticides or animal repellants with provision for draining away, or absorbing, or removing by ventilation, fluids, e.g. exuded by contents; Applications of corrosion inhibitors or desiccators for draining or collecting liquids without absorbing them
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Food Science & Technology (AREA)
- Orthopedics, Nursing, And Contraception (AREA)
Abstract
The invention discloses a kind of exhaust and moisture-proof FFS packaging bags, including bag body；Bag body includes two plane sides；It is equipped with anti-skid structure in described two plane sides；Overlapping region there are one being set with the bag；The overlapping region is disposed therein in a plane side；The overlapping region includes endothecium structure, layer structure；The endothecium structure is set to the inside of layer structure, and with layer structure bonding connection；It is characterized in that：Exhaust structure is equipped in the overlapping region and for ventilative barrier flaps；The exhaust structure includes exhaust passage, first row stomata and second row stomata；The first row stomata, second row stomata are connected with exhaust passage；The barrier flaps are set in the exhaust passage of overlapping region or on the endothecium structure of overlapping region；The present invention carries out filling or completes filling and after sealing in FFS packaging bags, and internal gas can quickly be discharged, and improve FFS packaging bags venting qualities, whole packet moisture resistance and whole resistance to the falling property of packet.
Description
Technical field
The present invention relates to a kind of packaging bag more particularly to a kind of exhaust and moisture-proof FFS packaging bags, belong to packing technique neck
Domain.
Background technology
Currently, high efficiency possessed by FFS (filling-Seal heat-sealings integrations of Film bag makings-Fill) is filling makes it change
The application of the industries such as work, food, building is more and more extensive, and especially in developed countries such as America and Europes, application percentage is far above me
State.
But generally there is higher moisture-proof requirement using material filling FFS, and the filling time is short, cause exhaust gas inside tired
Difficulty, especially for using the filling powder of pneumatic transmission, application filling FFS is greatly limited, by being carried out to bag body
Though punching can meet ventilation requirement, greatly reduce bag body intensity, reduce whole bag humidity resistance and granular material leakage powder, and uses
Common exhaust edge of a knife technique, exhaust efficiency is very low, and there is also moisture resistance reduce and material from exhaust the edge of a knife leakage etc. wind
Danger.
Invention content
The present invention is in order to solve filling, the leakage powder too low using common bag body punching humidity resistance of FFS, and arc exhaust hole is arranged
The problems such as gas efficiency is too low provides a kind of exhaust and moisture-proof FFS packaging bags.
To achieve the above object, the technical solution adopted by the present invention is that：
A kind of exhaust and moisture-proof FFS packaging bags, including bag body；The bag body includes two plane sides；Described two plane sides
On be equipped with anti-skid structure；Overlapping region there are one being set with the bag；The overlapping region is disposed therein a plane side
On；The overlapping region includes endothecium structure, layer structure；The endothecium structure is set to the inside of layer structure, and with it is outer
Layer structural bond connection；It is characterized in that：Exhaust structure is equipped in the overlapping region and for ventilative barrier flaps；The row
Depressed structure includes exhaust passage, first row stomata and second row stomata；The first row stomata, second row stomata are logical with exhaust
Road is connected；The barrier flaps are set in the exhaust passage of overlapping region or on the endothecium structure of overlapping region.
It is further improved, the exhaust passage is set between endothecium structure and layer structure.
It is further improved, the first row stomata is set to the bottom part of layer structure；Internal layer is arranged in second row stomata
The top of supply line of structure.
It is further improved, flange foldable structure is additionally provided on the layer structure；The flange foldable structure is set to outer
The edge of layer structure.
It is further improved, leakproofness bonded structure and anti-sticking structure is additionally provided on the endothecium structure；The leakproofness is viscous
Binding structure is set to the edge of endothecium structure；The endothecium structure is connected by the leakproofness bonded structure with layer structure
It connects；The anti-sticking structure is set to the intermediate position of endothecium structure.
Be further improved, the anti-sticking structure be patterned structure, nonskid coating, rope yarn or do not hinder gas by its
Laminated structure made of his material.
It is further improved, the width of the overlapping region is 20~200mm；The width of the exhaust passage be 10~
190mm。
It is further improved, anti-skid structure is patterned structure or nonskid coating.
It is further improved, the barrier is sheet barrier.
It is further improved, the first row stomata, second row stomata are edge of a knife type gas vent, pore type gas vent, ten
Font gas vent, blossom type gas vent or polygon gas vent；Its quantity is greater than or equal to 2.
Compared with prior art, using the above scheme, the beneficial effects of the invention are as follows：The present invention realizes row using gas vent
Gas, moisture-proof, degassing function；Using the cooperation of gas vent and exhaust passage, enhance the airing function of bag body；The present invention can be in FFS
Packaging bag is completed filling and after sealing, and internal gas can quickly be discharged, and improves FFS packaging bags venting qualities, whole packet moisture resistance and whole
Wrap resistance to falling property.
Description of the drawings
Fig. 1 is the structural diagram of the present invention.
Fig. 2 is second embodiment of the present invention structural schematic diagram.
Fig. 3 is the partial structurtes enlarged drawing of second embodiment in the present invention.
Wherein, 1, bag body；1-1, barrier；1-2, preceding plane side；1-3, prism；1-4, flange foldable structure；1-5、
First row stomata；1-6, second row stomata；1-7, anti-skid structure；1-8, layer structure；1-9, endothecium structure；1-10, leakproofness
Bonded structure；1-11, anti-sticking structure.
Specific implementation mode
Present invention will be further explained below with reference to the attached drawings and examples.
As shown in FIG. 1 to 3, a kind of exhaust and moisture-proof FFS packaging bags, including bag body 1；Preferably, the bag body 1 is
Polythene Bag body, Polypropylene Bag body or the bag body made of composite film material；These composite materials are answering for paper and woven cloth
Condensation material, composite polyethylene material or aluminum foil composite.
Embodiment one
As shown in Figure 1, the bag body 1 includes two plane sides, i.e., preceding plane side 1-2, rear plane side 1-20；The preceding plane side
1-2 is set to the front side of bag body 1, and the rear plane side 1-20 is set to the rear side of bag body 1；In the present embodiment, the bag body 1
Further include four prism 1-3 for constituting " M " type structure；The prism 1-3 respectively with preceding plane side 1-2, rear flat side
Face 1-20 is connected.
Anti-skid structure, respectively the first anti-skid structure 1-7, are equipped on the preceding plane side 1-2, rear plane side 1-20
Two anti-skid structures（It is not shown in figure）；Before the first anti-skid structure 1-7 is set on plane side 1-2；The second anti-Slipped Clove Hitch
Structure is set on rear plane side 1-20；Preferably, the first anti-skid structure 1-7, the second anti-skid structure be patterned structure or
Nonskid coating；And in the present embodiment, the first anti-skid structure 1-7, the second anti-skid structure select patterned structure, specifically, the
One anti-skid structure 1-7, the second anti-skid structure select two embossing belts.
The overlapping region there are one one fixed width is set on the bag body 1；The edge of the overlapping region by heat-sealing or
Hot melt adhesive is tightly connected into Line Continuity；Preferably, the width of the overlapping region is 20~200mm；In the present embodiment, institute
It states overlapping region and is set on preceding plane side 1-2
The overlapping region includes endothecium structure 1-9, layer structure 1-8；The endothecium structure 1-9 is set to layer structure 1-8
Inside, and with layer structure 1-8 bonding connections.
Exhaust structure is equipped in the overlapping region and for ventilative barrier flaps 1-1；The exhaust structure includes exhaust
Channel, first row stomata 1-5, second row stomata 1-6；The exhaust passage be set to endothecium structure 1-9 and layer structure 1-8 it
Between.
The exhaust passage is not glued by the centre formed after the layer structure 1-8 and endothecium structure 1-9 bondings of overlapping region
Intermediate channel even；Preferably, the width of the exhaust passage is 10~190mm.
The first row stomata 1-5 is set to the bottom part of layer structure 1-8；Internal layer knot is arranged in second row stomata 1-6
The top of supply line of structure 1-9；The first row stomata 1-5, second row stomata 1-6 are connected with exhaust passage；It allows in this way
Gas can enter from the second row stomata 1-6 of endothecium structure 1-9 when filling, by exhaust passage, to the of layer structure 1-8
It is discharged at two gas vent 1-5, reaches exhaust effect；Meanwhile second row stomata 1-6 is set to the top of supply line of endothecium structure 1-9,
To ensure that enough ventilatory capacities and entire pouring process can be vented.
The second row stomata 1-6 being set on endothecium structure 1-9 requires to be arranged in the position on the head of packaging bag bag body 1,
When ensureing filling, internal layer gas vent can be closed in the last moment that material is filled, and first be set on layer structure 1-8
Exhaust outlet 1-5 is then without specific position requirement.
The first row stomata 1-5, second row stomata 1-6 are edge of a knife type gas vent, pore type gas vent, cross row
Stomata, blossom type gas vent or polygon gas vent, and shifted to install by several apertures；Its quantity is greater than or equal to 2
It is a.
In the present embodiment, the barrier flaps 1-1 is set in the exhaust passage of overlapping region；And barrier flaps 1-1 and outer layer
Structure 1-8 is connected；Preferably, the barrier 1-1 is sheet barrier；Specifically, barrier 1-1 be it is ventilative with height,
Barrier flaps moisture-proof and with high-barrier ability；Barrier 1-1 selects non-woven fabrics, high paper thoroughly or the plastic film for beating micropore；Tool
It is preferably non-woven fabrics to have high ventilative, moisture-proof and barriers function tablet, allows for not influencing the same of bag body venting quality in this way
When, it efficiently obstructs material and is leaked from labyrinth type notch；In addition, non-woven fabrics not only has splendid air permeability effect, it may have good
Material barrier property and moisture resistance.
The length of the barrier flaps 1-1 is greater than or equal to the length of first row stomata 1-5 or second row stomata 1-6；It is wide
Width of the degree more than or equal to first row stomata 1-5 or second row stomata 1-6.
Flange foldable structure 1-4 is additionally provided on the layer structure 1-8；The flange foldable structure 1-4 is set to outer layer
The edge of structure 1-8；The flange foldable structure 1-4 and endothecium structure 1-9 bonding connections, allowing in this way can when inflating
It heaves, the volume of exhaust passage when increasing exhaust.
Leakproofness bonded structure 1-10 and anti-sticking structure 1-11 is additionally provided on the endothecium structure 1-9；The leakproofness is viscous
Binding structure 1-10 is set to the edge of endothecium structure 1-9；The endothecium structure 1-9 by the leakproofness bonded structure 1-10 with
Layer structure 1-8 is connected；The anti-sticking structure 1-11 is set to the intermediate position of endothecium structure 1-9.
Preferably, the anti-sticking structure 1-11 be patterned structure, nonskid coating, rope yarn or do not hinder gas by its
Laminated structure made of his material；In the present embodiment, anti-sticking structure 1-11 selects patterned structure.
In the implementation case, material enters packaging bag together with compressed air by valve port, and gas and partial material pass through weight
The second row stomata 1-6 of folded area inner layer structure 1-9 enters the exhaust passage of overlapping region, is provided with flange foldable structure 1-4
Layer structure 1-8 exhaust passage volume become larger due to gas pressure, have high ventilative and barrier barrier 1-1 barriers several
All materials into exhaust passage simultaneously allow air to be freely discharged, and bag is discharged in the first row stomata 1-5 for passing through layer structure 1-8
Outside, reach high-efficiency exhaust effect, the second row stomata 1-6 of endothecium structure 1-9 is located at bag body head, is only nearly completed when filling
Afterwards, notch just can be by feed blocking, filling completion at this time, entire pouring process, and packaging bag exhaust rate is constant.
Embodiment two
The present embodiment with implement one the difference is that, the barrier flaps 1-1 is set to the endothecium structure 1-9 of overlapping region
On；And it is connect with cemented in place at the two edges of endothecium structure 1-9.
The other parts of the present embodiment, it is identical as embodiment one, so being not repeated.
Embodiment three
In the present embodiment, bag body 1 only include two plane sides, i.e., preceding plane side, rear plane side, as shown in Figure 2 and Figure 3；Bag body
1 is enclosed with rear plane side by front side and sets；The bag body 1 is equipped with overlapping region；The overlapping region is arranged in front side
On face.
The other parts of the present embodiment are identical as embodiment one；So being not repeated.
The present invention realizes exhaust, moisture-proof function using gas vent；Using the cooperation of gas vent and exhaust passage, enhance bag body
Degassing function；The present invention can be after filling and sealing be completed in FFS packaging bags, and internal gas can quickly be discharged, and improves FFS packagings
Bag venting quality, whole packet moisture resistance and whole resistance to the falling property of packet.
The present invention is not limited to above-mentioned specific embodiment, those skilled in the art from above-mentioned design,
Without performing creative labour, made various transformation are within the scope of the present invention.
Claims (10)
1. a kind of exhaust and moisture-proof FFS packaging bags, including bag body；The bag body includes two plane sides；Described two flat sides
Anti-skid structure is equipped on face；Overlapping region there are one being set with the bag；The overlapping region is disposed therein a flat side
On face；The overlapping region includes endothecium structure, layer structure；The endothecium structure is set to the inside of layer structure, and with
Layer structure bonding connection；It is characterized in that：Exhaust structure is equipped in the overlapping region and for ventilative barrier flaps；It is described
Exhaust structure includes exhaust passage, first row stomata and second row stomata；The first row stomata, second row stomata with exhaust
Channel is connected；The barrier flaps are set in the exhaust passage of overlapping region or on the endothecium structure of overlapping region.
2. a kind of exhaust according to claim 1 and moisture-proof FFS packaging bags, it is characterised in that：The exhaust passage is set
It is placed between endothecium structure and layer structure.
3. a kind of exhaust according to claim 1 and moisture-proof FFS packaging bags, it is characterised in that：The first row stomata
It is set to the bottom part of layer structure；The top of supply line of endothecium structure is arranged in second row stomata.
4. a kind of exhaust according to claim 1 and moisture-proof FFS packaging bags, it is characterised in that：On the layer structure
It is additionally provided with flange foldable structure；The flange foldable structure is set to the edge of layer structure.
5. a kind of exhaust according to claim 1 and moisture-proof FFS packaging bags, it is characterised in that：On the endothecium structure
It is additionally provided with leakproofness bonded structure and anti-sticking structure；The leakproofness bonded structure is set to the edge of endothecium structure；It is described
Endothecium structure is connected by the leakproofness bonded structure with layer structure；The anti-sticking structure is set to the centre of endothecium structure
Position.
6. a kind of exhaust according to claim 5 and moisture-proof FFS packaging bags, it is characterised in that：The anti-sticking structure is
Patterned structure, nonskid coating, rope yarn or do not hinder gas other materials made of laminated structure.
7. a kind of exhaust according to claim 1 and moisture-proof FFS packaging bags, it is characterised in that：The overlapping region
Width is 20~200mm；The width of the exhaust passage is 10~190mm.
8. a kind of exhaust according to claim 1 and moisture-proof FFS packaging bags, it is characterised in that：Anti-skid structure is embossing
Structure or nonskid coating.
9. a kind of exhaust according to claim 1 and moisture-proof FFS packaging bags, it is characterised in that：The barrier is piece
Shape barrier.
10. a kind of exhaust according to claim 1 and moisture-proof FFS packaging bags, it is characterised in that：The first exhaust
Hole, second row stomata are edge of a knife type gas vent, pore type gas vent, cross gas vent, blossom type gas vent or polygon
Gas vent；Its quantity is greater than or equal to 2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710030501.8A CN108313491A (en) | 2017-01-17 | 2017-01-17 | A kind of exhaust and moisture-proof FFS packaging bags |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710030501.8A CN108313491A (en) | 2017-01-17 | 2017-01-17 | A kind of exhaust and moisture-proof FFS packaging bags |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108313491A true CN108313491A (en) | 2018-07-24 |
Family
ID=62892483
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710030501.8A Pending CN108313491A (en) | 2017-01-17 | 2017-01-17 | A kind of exhaust and moisture-proof FFS packaging bags |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108313491A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109229871A (en) * | 2018-08-09 | 2019-01-18 | 上海帆顺包装集团有限公司 | A kind of runner exhaust FFS film |
| CN114348444A (en) * | 2022-01-28 | 2022-04-15 | 南京沪汇包装科技有限公司 | Labyrinth exhaust industry heavy bag |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2543841A1 (en) * | 1974-10-01 | 1976-04-15 | Leer Koninklijke Emballage | STERILE PACKAGING MADE OF RESIN FOR PACKING STERILE ITEMS |
| GB2025894A (en) * | 1978-06-16 | 1980-01-30 | Perrier Heinz Sa | Mushroom spawn bag |
| CN2875969Y (en) * | 2006-03-13 | 2007-03-07 | 上海紫江彩印包装有限公司 | Unidirectional air permeability packaging bag |
| CN201037063Y (en) * | 2007-05-08 | 2008-03-19 | 南通大江化学有限公司 | Deoxidizing agent bag |
| CN101223084A (en) * | 2005-07-08 | 2008-07-16 | 施塔林格有限公司 | Bag capable of deflating |
| CN202201270U (en) * | 2011-08-01 | 2012-04-25 | 邱志宏 | Improved microwave bag structure |
| CN206537666U (en) * | 2017-01-17 | 2017-10-03 | 上海艾录包装股份有限公司 | It is a kind of to be vented and moistureproof FFS packaging bags |
-
2017
- 2017-01-17 CN CN201710030501.8A patent/CN108313491A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2543841A1 (en) * | 1974-10-01 | 1976-04-15 | Leer Koninklijke Emballage | STERILE PACKAGING MADE OF RESIN FOR PACKING STERILE ITEMS |
| GB2025894A (en) * | 1978-06-16 | 1980-01-30 | Perrier Heinz Sa | Mushroom spawn bag |
| CN101223084A (en) * | 2005-07-08 | 2008-07-16 | 施塔林格有限公司 | Bag capable of deflating |
| CN2875969Y (en) * | 2006-03-13 | 2007-03-07 | 上海紫江彩印包装有限公司 | Unidirectional air permeability packaging bag |
| CN201037063Y (en) * | 2007-05-08 | 2008-03-19 | 南通大江化学有限公司 | Deoxidizing agent bag |
| CN202201270U (en) * | 2011-08-01 | 2012-04-25 | 邱志宏 | Improved microwave bag structure |
| CN206537666U (en) * | 2017-01-17 | 2017-10-03 | 上海艾录包装股份有限公司 | It is a kind of to be vented and moistureproof FFS packaging bags |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109229871A (en) * | 2018-08-09 | 2019-01-18 | 上海帆顺包装集团有限公司 | A kind of runner exhaust FFS film |
| CN114348444A (en) * | 2022-01-28 | 2022-04-15 | 南京沪汇包装科技有限公司 | Labyrinth exhaust industry heavy bag |
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Application publication date: 20180724 |
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| RJ01 | Rejection of invention patent application after publication |