baber/WOPTO huggingface dataset:
Patent CS-264192-B1 (CS)
Inventor: MLYNAR JAROMIR ING
IPC: C07C211/51
Filed: 1987-11-04
Abstract: Riešenie sa týká sposobu úpravy taveniny
N-fenyl-N‘- (1,3-dimetylbutyl) -p-fenyléndiamínu
pre přípravu tvarovo stálých
častíc. Tavenina N-fenyl-N‘-(l,3-dimetylbutyl)-p-fenyléndiamínu,
připadne s prídavkorn
N-fenyl-N‘- (1,3-dimetylbutyl)-p-fenyléndiamínu
v práškovej formě, sa upraví na
teplotu maximálně 44 °C, za miešania sa pri
tejto teplote udržuje až do dosiahnutia dostatečného
stupňa kryštalizácie — do vytvorenia
nukleačných centier. Potom sa teplota
zvýši na maximálně 48 °C, homogénna
krystalická masa sa udržuje pri tejto teplote
a tvaruje sa pri teplote maximálně 30 °C
do róznych tvarov. Produkt sa používá ako
antioxidačný prostriedok.
Patent CS-271666-B1 (CS)
Title: Device for electric energy supply and air outlet
Inventor: MANEK ALES
IPC: D01H11/00
Filed: 1988-12-15
Abstract: The solution concerns the device for the electrical energy input and air output, especially with textile machines that are equipped with the mobile service automatic machine, which moves along the endless circular route alongside the working units. The merit of the solution concerns the fact that the end part of the upper suction tube (1) passes close through the front face of the hollow cylindrical box (2), in whose cylinder wall the feeder brushes (6) are displaceably placed. The feeder brushes (6) flexibly bear on the brush rings (4), which are associated with the separation grommets (8), which are slipped over the built-up end part of the lower suction pipe (10), which passes through the O-seal (5) and the lid (14) with the end flange (7), which close the hollow cylindrical box (2).<IMAGE>
Patent CS-237378-B1 (CS)
Inventor: CHLOST MILAN
IPC: C09B35/26
Filed: 1983-11-29
Abstract: Nové disazopigmenty žlutých a červených
odstínů obecného vzorce
(51) Int. CL*
C 09 B 35/26
kde Rj., R? jsou stejné nebo různé zbytky
azokomponsnt, neobsahující substituenty
způsobující vodopropustnost a jsou kopulovány
do o-polohy k fenolické nebo enolické
hydroxyskupině, zejména zbytky azokomponent
typu acetoacetarylidů, fenylmetylpyrazolonů,
2-naftolu či arylidů
kys. 2-hydroxy-3-naftoové.
Patent CS-230918-B1 (CS)
Inventor: PANEK STANISLAV
IPC: B30B15/32
Filed: 1982-12-16
Abstract: Vynález se týká vyhazovačích zařízení
postupových lisů, zejména výrobu šroubů,
s hnacím hřídelem, který pohání hnacím ú-
•strojím a přenosovými členy vyhazovači páky,
ovládající vyhazovači trny. Účelem vynálezu
je uspořádání hnacího a přenosového
ústrojí tak, aby bylo možno dosáhnout podle
potřeby u jednoho vyhazovscího trnu
kinematicky odlišného pohybu vhodného pro
ostřihování, při snížení hlučnosti a zvýšení
výrobnosti, a změnu provést jednoduchými
technickými prostředky. Tohoto účelu
je dosaženo tím, že vyhazovači zařízení
obsahuje hlavní hnací ústrojí, nejméně jedno
přídavné kolenové ústroji nezávisle pohyblivé
a přídavné hnací ústrojí, jakož, i spojovací
členy pro spojení přídavného kolenového
ústrojí s hlavním hnacím ústrojím nebo
s přídavným hnacím ústrojím.
Patent CS-244239-B1 (CS)
Inventor: LOEFFELMANN ANTONIN
IPC: B23Q3/155
Filed: 1984-12-12
Abstract: Zařízení je určeno k automatické výměně
nástrojů na obráběcích strojích se dvěma
vůči sobě kolmými pracovními vřeteny, zvláště
na velkých portálových strojích. Sestává
z převodové skříně /1/, ve které je otočně
kolem vodorovné osy uloženo rameno /2/,
sestávajíc! z'vodorovné části /20/ a svislé
části /21/, přičemž ve vodorovné části
/20/ je uložen hřídel /23/ ozubených kol
/9,10/ spojený přes ozubený převod s ozubeným
kolem /11/, uloženým ve svislé části
/21/, opatřené hydraulickým válcem /22/
pro výsuv podávače /3/ otočně uloženého
v rozsahu čtyřikrát 90° v obou směrech,
přičemž v podávači /3/ jsou výsuvně uloženy
chapače /16,17/ nezávisle otevírané a
uzavírané pákovým převodem p
Patent CS-229383-B1 (CS)
Inventor: FALC ALOIS
IPC: B01D53/34
Filed: 1982-12-27
Abstract: Účelem vynálezu je zajistit dokonalou
likvidaci organických látek v kovových
úletech při zpracování odpadů kovů a vytvořit
podmínky pro vysoké odloučení
úletů z exhalací komína do ovzduší se zajištěním
zachycení prachu a 50 % obsahem
olova v suché formě. Účelu bylo dosaženo
jednak snížením objemu tvorby technologického
plynu s úletem a snížením jeho
zředění a snížením jeho ochlazování při
'zvýšení provozních teplot při odlučování.
K tomu účelu byla šachtové pec vybavena
hermetizovanou kychtou, ke spalování organických
létek použita svislá spalovací
pec a k odlučování úletu použity v pytlovém
odlučovači pytle ze tkaniny ze skelných
vláken odolných proti teplotám nejméně
25O°C.
Patent DK-170769-B1 (DK)
Inventor: SHROOT BRAHAM
IPC: C07D333/40
Filed: 1986-07-24
Granted: 1996-01-15
Abstract: The compounds in question correspond to the following general formula: <IMAGE>  in which: X represents -CH=CH-, O or S, R1 and R2, which may be identical or different, represent a hydrogen atom, a linear or branched alkyl radical having from 1 to 15 carbon atoms or an alkoxy radical having from 1 to 6 carbon atoms, or R1 and R2, taken together and with the adjacent carbon atoms of the naphthalene ring-system, form a 5- or 6-membered ring optionally substituted with at least one lower alkyl radical or interrupted by an oxygen atom, and R3 represents a -CH2OH radical or a radical -COR4, or alternatively a -CH3 radical in the case where R1 and R2, taken together form a 5- or 6-membered ring,  R4 representing -OR5 or <IMAGE> R5 representing a hydrogen atom, an alkyl radical having 1 to 20 carbon atoms, monohydroxyalkyl, polyhydroxyalkyl, aryl or aralkyl radical, optionally substituted, or a sugar residue, or alternatively represents a radical: <IMAGE> p being 1, 2 or 3, r' and r'' representing a hydrogen atom, a lower alkyl radical, a monohydroxyalkyl or polyhydroxyalkyl radical, an optionally substituted aryl radical or an amino acid residue or amino sugar residue, or alternatively, taken together, form a heterocycle, including the salts of the derivatives of formula (I).
Patent FI-102173-B1 (FI)
Inventor: KRESS THOMAS JOSEPH
IPC: A61K31/403
Filed: 1991-02-25
Granted: 1998-10-30
Abstract: The present invention provides 4-amino-6-substituted-hexahydrobenz[cd]indoles which are useful in treating disease states which can be benefited by an alteration of function at 5- @  @ receptors.
Patent FI-102741-B1 (FI)
Inventor: LEOPARDI II EMMETT
IPC: B41F5/24
Filed: 1993-04-30
Granted: 1999-02-15
Abstract: This invention relates to an anilox printing apparatus (20) for depositing ink onto a substrate (23) in a predetermined pattern. The apparatus (20) has a reservoir (22) provided with a weir (30) so that ink (24) may continuously overflow the top or end of the weir (30) and be removed from the reservoir (22) in a controlled fashion while maintaining a constant backpressure of ink (24) in the reservoir (22). This arrangement provides the advantage that ink leakage and splashing caused by debris entering the nip associated with a doctor blade (26) held against the anilox roll (25) or by surface imperfections interfering with the seal formed by such a doctor blade (26) are eliminated. This also provides a printing apparatus (20) for complete coating of the periphery of the anilox roll (25) with ink (24) without a high pressure system.
Patent IE-37863-B1 (IE)
Title: Process for manufacturing 4,41ditert.butyl benzoyl peroxide
IPC: C08F4/00
Filed: 1973-07-02
Abstract: 1429212 Preparation of 4,4<SP>1</SP>-di.-tert.-butylbenzoyl peroxide SOC CHIMIQUE DES CHARBONNAGES 5 July 1973 [5 July 1972] 32131/73 Heading C2C 4,4<SP>1</SP> - Di - t - butylbenzoyl peroxide is prepared by reacting 4-t-butylbenzoyl chloride with an aqueous alkaline solution of hydrogen peroxide at a temperature of between 30‹ and 35‹ C. in the absence of an organic solvent.
[GB1429212A]
Patent IE-55242-B1 (IE)
Title: Endoprosthetic bone joint devices
IPC: A61F2/28
Filed: 1983-05-16
Abstract: An endoprosthetic bone joint device is secured by filamentary elements driven therethrough into penetrating engagement with bone. These elements will normally exhibit transverse flexibility; they preferably have elastic modulus similar to bone; they can be roughened or barbed for added securement; they can carry material of negative electrochemical potential relative to other parts of the device to induce bone growth intimately therewith; and they can carry material otherwise beneficial to bone growth. The device preferably also has a radiating multi-directional flange formation to engage a corresponding formation cut in the bone.
[US4532660A]
Patent IE-58426-B1 (IE)
Title: 2-substituted-1-naphthols as 5-lipoxygenase inhibitors
IPC: C07C43/23
Filed: 1986-05-08
Abstract: 2-Substituted-1-naphthols are 5-lipoxygenase inhibitors which make them useful in the treatment of inflammation, obstructive lung diseases and/or psoriasis. Useful 2-substituent groups are alkyls, alkenyls, alkynyls, cycloalkyls, cycloalkenyls, the groups CH2-C 3BOND C-(CH2)mR5 and CH=CH-(CH2)nR5 (where m is 1-4, n is 0-3 and R5 includes phenyl, COOR9, where R9 is H or alkyl of 1-4 carbons, AR6 (where A is a methylene chain and R6 is a variety of groups including Cl, Br, I, CHO, CN, COOR9, NH2, SC(NH)NH2, phenyl, P(O)(OR9)2, etc.), and CHR7R21 (where R7 is a variety of aromatic and heterocyclic groups and R21 is H, optionally substituted phenyl and a variety of heterocyclic groups).
Patent IE-59234-B1 (IE)
Title: Method of producing alcohol-free or low-alcohol beer
IPC: C12G3/02
Filed: 1986-06-25
Abstract: A method of producing an alcohol-free or low alcohol beer comprising thermally breaking malt draff to obtain a malt draff mash from a substrate selected from the group consisting of a full- or a high-alcohol content beer brewing base or a protein fraction obtained from malt draff by digesting, boiling or autoclaving during the production of edible draff meal in a draff mash. The method homogenizes, extrudes and mechanically removes insoluble chaff from the brewing base prior to thermally breaking up the malt draff, cooling the malt draff mash to about 72 DEG C., emzymatically breaking up the malt draff mash by adding coarsely ground malt, heating the mash to 80 DEG -85 DEG C., adding thereto coarsely ground malt premashed in cold water to produce a wort with a final fermentation degree of at most 60% and a temperature of 70 DEG -74 DEG C., which is maintained until iodine normality is attained and subjecting the iodine normal mash to mashing.
Patent IE-39911-B1 (IE)
Title: Improvements in or relating to filter rods for cigarettes
IPC: A24D3/02
Filed: 1974-08-26
Abstract: 1435255 Cigarette filter LIGGETT & MYERS INC 23 Aug 1974 [27 Aug 1973 (2)] 37180/74 Heading A2C A cigarette filter comprises a rigid tube 57 located centrally of the filter surrounded by a layer of compacted fibrous filter material 58 which is in turn surrounded by paper 59 which is porous or perforated. The tube is of a plastics material such as polyethylene the filter material is cellulose acetate tow. Apparatus for producing such a filter includes a hollow mandrel 19. A stream of tubing is passed through the interior of the mandrel while filter material is passed into a venturi nozzle 32 surrounding the mandrel. A paper stream 42 is passed onto a conveyor 39. The tube thus emerges from the mandrel 19 surrounded by filter material between a folding block 36 and a tongue 37. The block folds the paper about the tube and filter material. The mandrel 19 is mounted on a block 22 which may be moved horizontally or vertically by respective spring loaded adjustment screws thereby ensuring correct positioning of the. tube.
[GB1435255A]
Patent IE-38385-B1 (IE)
Title: Preparation of citraconic anhydride and itaconic acid
IPC: B01J27/00
Filed: 1973-10-17
Abstract: Citraconic anhydride can be prepared in high yield by reacting with an excess of formaldehyde at least one compound selected from the group consisting of succinic anhydride, and di-lower alkyl esters of succinic acid, in the vapor phase at a temperature of about 280-410 DEG C. in the presence of a catalyst selected from the group consisting of thorium sulfate, potassium diacid phosphate, or lithium carbonate on an alundum support, or lithium phosphate. Itaconic acid is conveniently prepared by hydrolyzing the citraconic anhydride to citranconic acid, and then isomerizing the acid to yield itaconic acid.
[US3835162A]
Patent IE-62598-B1 (IE)
Title: "Bicyclic aromatic compounds"
Inventor: MAIGNAN JEAN
IPC: C07C49/796
Filed: 1987-07-16
Abstract: Bicyclic aromatic compounds, having the following formula:   <IMAGE> in which: n=0 or 1; R' represents H, OH, C1-C4 alkoxy or C1-C4 acyloxy; R'' represents H or C1-C4 alkoxy; or R' and R'' taken together form an oxo (=O), methano (=CH2) or hydroximino (=N-OH) radical; R represents -CH2OH or -COR7; R7 represents H, OR8, or <IMAGE>  R8 represents H, C1-C4 alkyl, monohydroxyalkyl, polyhydroxyalkyl, aryl or aralkyl, optionally substituted, a sugar residue or   <IMAGE>  where p is 1, 2 or 3 and r' and r'' represent H, lower alkyl, monohydroxyalkyl, optionally interrupted by a heteroatom, polyhydroxyalkyl, optionally substituted aryl or benzyl, an amino acid residue or an aminated sugar residue or taken together with the nitrogen atom to which they are attached form a heterocycle; A represents methylene or dimethylene, substituted or not with lower alkyl, R1, R2, R3 and R4 represent H or lower alkyl, R1 and R3 taken together are capable of forming a methylene or dimethylene radical, when A represents dimethylene; R5 and R6 represent H or methyl, and the salts of said compounds, as well as their optical and geometric isomers. This active compound is employed in pharmaceutical or cosmetic preparations.
Patent IE-64250-B1 (IE)
Title: Rail fastening on concrete ties or the like by means of resilient tension clamps
Inventor: SCHULTHEISS HANS
IPC: E01B9/30
Filed: 1990-06-01
Abstract: The invention concerns a rail fastener on concrete ties (4) or the like including resilient tension clamps (6) of steel rods in the form of a W and angled guide plates (3) for the rail base (1a). This so-called HM rail fastener is inventively improved by a special shaping of the tension clamp and angled guide plate, to simplify the securing of the rail on the concrete ties, in that the rotation of the elastic strainers which was previously necessary in HM construction when passing from the preassembly to the assembly position is omitted. This is achieved in that the angled guide plate (3), which is provided with a rib (3a) extending longitudinally to the rail foot for abutment on the rail foot (1a), contains in this rib special recesses (3b) for the reception and retention of the free ends of the tension clamp in the preassembly position. A tension clamp (6) has outer legs (6b) which with expansion of the spacing from the inner legs (6d) against the rail foot (1a) become broader and their free ends (6a) end outside the middle portion (6e) and wherein the inner legs (6d) of the tension clamp (6) which surround the tie screw (5) are designed so that in the preassembly position they abut with their center portion (6e) the shaft (5a) of the tie screw, while the head (5b) of the tie screw (5) overlaps the inner leg (6d) in the assembly position. In a special embodiment, the tension clamp is so designed that its center portion permanently surrounds the tie screw (5), and its inner leg portions are brought together except for a small spacing.
Patent IE-43943-B1 (IE)
Title: Catalyst regeneration by coke oxidation in a dense phase bed and catalyzed carbon monoxide conversion in a dilute phase transport riser
IPC: C10G11/00
Filed: 1976-09-07
Abstract: A process for the regeneration of a coke-contaminated catalytic cracking catalyst removed from a hydrocarbon reaction zone, said catalyst containing catalytically effective amounts of a CO conversion promoter comprising one or more oxides of metals, and for the catalytic conversion of CO, resulting from the oxidation of coke from said catalyst, to carbon monoxide. The process comprises the steps of: oxidizing coke in a first dense bed of catalyst maintained in a regeneration zone to produce partially spent regeneration gas and regenerated catalyst; passing the regeneration gas and regenerated catalyst to a dilute phase transport riser wherein CO is essentially completely converted in the presence of the CU conversion promoter to CO2 and wherein at least a portion of the heat of CO conversion is transferred to the regenerated catalyst; and, passing regenerated catalyst to a second dense bed from which regenerated catalyst is returned to the hydrocarbon reaction zone.
Patent IE-53736-B1 (IE)
Title: Carbapenem derivatives, their preparation and compositions containing them
IPC: A61K31/40
Filed: 1982-08-18
Abstract: Compounds of the formula: <CHEM>  wherein: R<1> represents a hydrogen atom, a C2-3 alkyl group, a 1-hydroxyethyl group or a 1-hydroxy-1-methylethyl group;  R<2> represents a group of formula: <CHEM> in which, X represents a hydrogen atom, an alkyl group, a cyanoalkyl group, a haloalkyl group, an alkoxyalkyl group, an alkylthioalkyl group, an alkoxycarbonylalkyl group, an alkoxy group, an alkylthio group, an alkylsulphinyl group, an alkylsulphonyl group, a hydroxy group or a halogen atom, where each alkyl or alkoxy has 1-4 carbon atoms; Y represents a hydrogen atom, a C1-4 alkyl group, a C1-4 alkyl group substituted by a hydroxy, amino, carboxy or C1-4 alkoxy group, a C1-5 aliphatic acyl group, a C1-5 aliphatic acyl group substituted by a hydroxy, amino, carboxy or C1-4 alkoxy group, a group of formula -C(R<5>)=N-R<6> (R<5> and R<6> each represents a hydrogen or C1-4 alkyl). <CHEM> represents a 2- or 3-azetidinyl, a 2- or 3-pyrrolidinyl, a 2-, 3- or 4-piperidyl or a 3,4,5,6-tetrahydropyrimidin-5-yl. R<3> represents a carboxy group or a protected carboxy group, and pharmaceutically acceptable salts thereof, provided that when the group <CHEM>  is a 4-piperidyl group then Y is not a C1-4 alkyl group and when <CHEM> is a 3-pyrrolidinyl group Y is not a group then Y is not a group -C(R<5>)=n-R<6>, are useful antibiotics.
Patent IE-57685-B1 (IE)
Title: Process for transformation of yarrowia lipolytica
IPC: C12N15/57
Filed: 1984-10-04
Abstract: Process for transformation of Yarrowia lipolytica, vectors useful therefor comprising DNA of a microbial vector and chromosomal DNA of Y. lipolytica and transformants comprising said vectors in E coli and Y lipolytica, and integrative shuttle vectors for Escherichia-Yarrowia transgeneric cloning. Said vectors or subclones thereof enable creation of Y. lipolytica cloning vectors into which specific or random segments of DNA can be inserted and the resulting vectors used to transform a suitable host microbe, especially Y. lipolytica, to improve the fermentation characteristics thereof and hence their industrial utilization. The methodology described permits the cloning of genes from a gene library of Y. lipolytica by complenentation with an integrating vector. Specifically claimed are the plasmid vectors pLD25, pLD28, pLD40 and pLD55, Y. lipolytica transformants containing pLD25 and pLD55, and an E. coli transformant containing pLD25.
Patent IE-72961-B1 (IE)
Title: Analogs of hirudin having antiplatelet activity
Inventor: KRSTENANSKY JOHN LEONARD
IPC: C07K14/81
Filed: 1991-07-23
Abstract: This invention relates to peptide derivatives which are useful anticoagulant agents.
Patent IE-81098-B1 (IE)
Title: Protection of plants against viral infection
Inventor: BEACHY ROGER N
IPC: A01N65/38
Filed: 1986-10-28
Abstract: A process for producing genetically transformed plants which are resistant to infection by a plant virus, comprises the steps of:   (a) inserting into the genome of a plant cell a recombinant, double-stranded DNA molecule comprising (i) a promoter which functions in plant cells to cause the production of RNA sequences of said plant virus; (ii) a DNA sequence that corresponds to an RNA sequence of said plant virus. (iii) a 3' non-translated region which functions in plant cells to cause the addition of polyadenylated nucleotides to the 3' end of said RNA sequence;   (b) obtaining transformed plant cells; and (c) regenerating from the transformed plant cells genetically transformed plants which have increased resistance to infection by said plant virus. o
Patent IE-57920-B1 (IE)
Title: Moulded fibre reinforced plastic articles
IPC: B29C70/08
Filed: 1986-10-28
Abstract: A process for moulding articles of fibre reinforced plastics material which includes pre-heating a sheet of consolidated thermoplastics material which has dispersed therein from 20% to 70% by weight of reinforcing fibres which have a high modulus of elasticity (as herein defined) and between about 7 and about 50 millimetres long to cause the sheet to expand due to relief of the stresses in the reinforcing fibres, placing the expanded sheet in a com­pression mould and closing the mould to form an article of predetermined shape having portions of different density.
Patent IE-66733-B1 (IE)
Title: Piperidinyl compounds
Inventor: CARR ALBERT A
IPC: C07D317/48
Filed: 1988-12-16
Abstract: 1,4-disubstituted piperidinyl compounds of formula I useful as antiarrhythmics, analgesics, and serotonin 5HT₂ antagonists.
Patent IE-79078-B1 (IE)
Title: Eeprom having coplanar on-insulator fet and control gate
Inventor: ACOVIC ALEXANDRE
IPC: H01L27/115
Filed: 1997-06-17
Abstract: An electrically erasable programmable read-only memory CEEPROM) includes a field effect transistor and a control gate spaced apart on a first insulating layer, a second insulating layer formed over the field effect transistor and the control gate and a common floating gate on the second insulating layer over the channel of the field effect transistor and the control gate, the floating gate thus also forms the gate electrode of the field-effect transistor. The EEPROM devices may be interconnected in a memory array and a plurality of memory arrays may be stacked on upon another. The invention overcomes the problem of using a non-standard silicon-on-insulator (SOI) CMOS process to make EEPROM arrays with high areal density.
Patent LU-102190-B1 (LU)
Title: Vorrichtung und Verfahren zur Inspektion von Energieerzeugungsstrukturen
Inventor: ROBERT HÖRMANN
IPC: F03D80/50
Filed: 2020-11-11
Granted: 2022-05-11
Abstract: Eine Vorrichtung (10) zur autonomen Inspektion von Energieerzeugungsstrukturen (15) sowie ein Verfahren zur Auswertung von aktuellen Strukturinformationen (46) von Energieerzeugungsstrukturen (15), ein Verfahren für eine Prognose technischer Maßnahmen (49) von Energieerzeugungsstrukturen (15) und ein Verfahren zur Berechnung von Bahninformationen (90) werden vorgestellt. Die Vorrichtung (10) ermöglicht die Erfassung der aktuellen Strukturinformationen (46) durch eine Sensoreinheit (40) angebracht an einer Trägereinheit (20). Die Vorrichtung umfasst weiter eine Befehlszentrale (80) für die Ermittlung, Speicherung und Übertragung von Bahninformationen (90) sowie die Speicherung von historischen Strukturinformationen (47) in einem Befehlscomputer (81). Das Verfahren zur Auswertung von aktuellen Strukturinformationen (46) umfasst das Ermitteln von Zustandsänderungen (43) zwischen den aktuellen Strukturinformationen (46) und den in einer Merkmaldatenbank gespeicherten historischen Strukturinformationen (47).
Patent LU-102720-B1 (LU)
Title: A 2-5THz broadband hexagonal porous core ultra-high birefringence terahertz fiber
Inventor: HUI ZHANQIANG
IPC: G02B6/122
Filed: 2021-03-31
Granted: 2021-10-11
Abstract: The invention discloses a 2-5 THz broadband hexagonal porous core ultra-high birefringence terahertz optical fiber. The terahertz optical fiber includes the following materials: a cladding and a core. The cladding and the core are arranged in a same base material. The core includes: a central inner layer and an outer layer. The central inner layer is a regular hexagonal area surrounded by 6 circular air holes; the outer layer is composed of 36 circular air holes, with each 6 circular air holes as the basic unit, enclosing 6 regular hexagonal areas. The core is composed of a plurality of micro air holes, including a core microstructure composed of 1 regular hexagon unit air hole core in the central inner layer and 6 regular hexagon units in the outer layer.