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1. WO2021059088 - ARTICLES INCLUDING PANELS AND MOLDED STRUCTURES AND METHODS OF MAKING SAME

Publication Number WO/2021/059088
Publication Date 01.04.2021
International Application No. PCT/IB2020/058635
International Filing Date 16.09.2020
IPC
B29C 45/14 2006.01
BPERFORMING OPERATIONS; TRANSPORTING
29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
45Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
14incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
B60R 13/08 2006.01
BPERFORMING OPERATIONS; TRANSPORTING
60VEHICLES IN GENERAL
RVEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
13Elements for body-finishing, identifying, or decorating; Arrangements or adaptations for advertising purposes
08Insulating elements, e.g. for sound insulation
B32B 3/12 2006.01
BPERFORMING OPERATIONS; TRANSPORTING
32LAYERED PRODUCTS
BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
3Layered products essentially comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar form; Layered products essentially having particular features of form
10characterised by a discontinuous layer, i.e. apertured or formed of separate pieces of material
12characterised by a layer of regularly-arranged cells whether integral or formed individually or by conjunction of separate strips, e.g. honeycomb structure
G10K 11/172 2006.01
GPHYSICS
10MUSICAL INSTRUMENTS; ACOUSTICS
KSOUND-PRODUCING DEVICES;  METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
11Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
16Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
172using resonance effects
B29L 31/60 2006.01
BPERFORMING OPERATIONS; TRANSPORTING
29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
LINDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C59
31Other particular articles
60Multitubular or multicompartmented articles, e.g. honeycomb
CPC
B29C 2045/14237
BPERFORMING OPERATIONS; TRANSPORTING
29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
45Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
14incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
1418the inserts being deformed or preformed, e.g. by the injection pressure
14237the inserts being deformed or preformed outside the mould or mould cavity
B29C 2045/14245
BPERFORMING OPERATIONS; TRANSPORTING
29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
45Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
14incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
1418the inserts being deformed or preformed, e.g. by the injection pressure
14237the inserts being deformed or preformed outside the mould or mould cavity
14245using deforming or preforming means outside the mould cavity
B29C 2045/14532
BPERFORMING OPERATIONS; TRANSPORTING
29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
45Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
14incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
14467Joining articles or parts of a single article
14532injecting between two sheets
B29C 2045/1454
BPERFORMING OPERATIONS; TRANSPORTING
29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
45Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
14incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
14467Joining articles or parts of a single article
1454injecting between inserts not being in contact with each other
B29C 45/1418
BPERFORMING OPERATIONS; TRANSPORTING
29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
45Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
14incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
1418the inserts being deformed or preformed, e.g. by the injection pressure
B29L 2031/60
BPERFORMING OPERATIONS; TRANSPORTING
29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
LINDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
2031Other particular articles
60Multitubular or multicompartmented articles, e.g. honeycomb
Applicants
  • 3M INNOVATIVE PROPERTIES COMPANY [US]/[US]
Inventors
  • MCNULTY, Jason D.
  • PERIN, Dino
  • JONZA, James M.
Agents
  • PISHKO, Adrian L.
  • FLORCZAK, Yen Tong,
  • BLANK, Colene H.,
  • GEISE, C. Michael,
  • HARTS, Dean M. ,
  • LEVINSON, Eric D.,
  • NOWAK, Sandra K.,
  • RINGSRED, Ted K.,
Priority Data
62/904,13223.09.2019US
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) ARTICLES INCLUDING PANELS AND MOLDED STRUCTURES AND METHODS OF MAKING SAME
(FR) ARTICLES COMPRENANT DES PANNEAUX ET DES STRUCTURES MOULÉES ET PROCÉDÉS DE FABRICATION ASSOCIÉS
Abstract
(EN)
A method of making an article is provided, including placing at least a portion of a panel in an injection molding die and overmolding at least one molded structure on a surface of the panel in the injection molding die, wherein the molded structure includes a foam composition. An article is also provided including a material-to-material connection between the surface of a panel and a molded structure. The panel includes first and second layers and a core disposed there between, wherein the core has a plurality of walls providing a series of connected cells. Some of the cell walls have openings providing fluid communication between a series of at least 3 cells, and the opening in a cell wall has an area that is at least 50 percent of the area of a side of that cell wall. Articles such as panels, walls, or other parts with curved surfaces can be formed according to certain exemplary embodiments. The articles are useful for absorbing sound in a designed frequency range.
(FR)
L'invention concerne un procédé de fabrication d'un article, comprenant le placement d'au moins une partie d'un panneau dans une matrice de moulage par injection et le surmoulage d'au moins une structure moulée sur une surface du panneau dans la matrice de moulage par injection, la structure moulée comprenant une composition de mousse. L'invention concerne également un article comprenant une liaison matière-matière entre la surface d'un panneau et une structure moulée. Le panneau comprend des première et seconde couches et une partie centrale disposée entre celles-ci, la partie centrale comportant une pluralité de parois délimitant une série de cellules reliées. Certaines des parois de cellule possèdent des ouvertures assurant une communication fluidique entre une série d'au moins 3 cellules, et l'ouverture dans une paroi de cellule possède une surface représentant au moins 50 pour cent de la surface d'un côté de cette paroi de cellule. Selon certains modes de réalisation donnés à titre d'exemple, des articles tels que des panneaux, des parois ou d'autres parties présentant des surfaces incurvées peuvent être formés. Les articles sont utiles pour absorber le son dans une plage de fréquences donnée.
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