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1. (WO1998050221) ENCAPSULATION OF PRE-EXPANDED ELASTOMERIC FOAM WITH A THERMOPLASTIC
Latest bibliographic data on file with the International Bureau

Pub. No.: WO/1998/050221 International Application No.: PCT/US1998/008980
Publication Date: 12.11.1998 International Filing Date: 07.05.1998
Chapter 2 Demand Filed: 13.11.1998
IPC:
B29C 44/18 (2006.01) ,B29C 47/00 (2006.01) ,B29C 61/00 (2006.01) ,B32B 3/08 (2006.01) ,B32B 5/18 (2006.01)
B PERFORMING OPERATIONS; TRANSPORTING
29
WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
C
SHAPING OR JOINING OF PLASTICS; SHAPING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL; AFTER- TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
44
Shaping by internal pressure generated in the material, e.g. swelling, foaming
02
for articles of definite length, i.e. discrete articles
12
Incorporating or moulding on preformed parts, e.g. inserts, reinforcements
18
Filling preformed cavities
B PERFORMING OPERATIONS; TRANSPORTING
29
WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
C
SHAPING OR JOINING OF PLASTICS; SHAPING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL; AFTER- TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
47
Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
B PERFORMING OPERATIONS; TRANSPORTING
29
WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
C
SHAPING OR JOINING OF PLASTICS; SHAPING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL; AFTER- TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
61
Shaping by liberation of internal stresses; Making preforms having internal stresses; Apparatus therefor
B PERFORMING OPERATIONS; TRANSPORTING
32
LAYERED PRODUCTS
B
LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
3
Layered 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
02
characterised by features of form at particular places, e.g. in edge regions
08
characterised by added members at particular parts
B PERFORMING OPERATIONS; TRANSPORTING
32
LAYERED PRODUCTS
B
LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
5
Layered products characterised by the non-homogeneity or physical structure of a layer
18
characterised by features of a layer containing foamed or specifically porous material
Applicants:
HENKEL CORPORATION [US/US]; Suite 200 2500 Renaissance Boulevard Gulph Mills, PA 19406, US
Inventors:
PAVER, Stephen, J., Jr.; US
Agent:
MEDER, Martin, G.; Henkel Corporation Suite 200 2500 Renaissance Boulevard Gulph Mills, PA 19406, US
TRZASKA, Steven, J.; Henkel Corporation Suite 200 2500 Renaissance Boulevard Gulph Mills, PA 19406, US
Priority Data:
09/071,00901.05.1998US
60/046,86408.05.1997US
Title (EN) ENCAPSULATION OF PRE-EXPANDED ELASTOMERIC FOAM WITH A THERMOPLASTIC
(FR) ENCAPSULAGE DE MOUSSE ELASTOMERE PRE-EXPANSEE PAR UN MATERIAU THERMOPLASTIQUE
Abstract:
(EN) A capsule (10) is formed from a pre-expanded foam core (12) in a compressed condition with a thermoplastic outer covering (14) completely enveloping the foam core (12) to maintain it in the compressed condition. The outer covering (14) is made of a material capable of softening sufficiently when heated to permit the foam core (12) to expand toward its original expanded uncompressed condition. Preferably, the outer covering (14) adheres to the foam (12) and then is carried by the expanding foam (12) into intimate contact with the inner surface of a hollow structural member so as to form a seal for the hollow structural member.
(FR) Cette capsule (10) est formée d'une âme de mousse (12) pré-expansée à l'état compressé, une enveloppe extérieure (14) thermoplastique enserrant totalement l'âme de mousse (12) pour la maintenir compressée. L'enveloppe extérieure (14) est faite d'une matière à même de s'amollir suffisamment une fois chauffée pour permettre à l'âme de mousse (12) de revenir à sa taille d'origine, en l'occurrence à son état expansé. L'enveloppe extérieure (14) adhère, de préférence, à la mousse (12) qui, étant en état d'expansion, pousse l'enveloppe jusqu'à la mettre en contact étroit avec la face intérieure d'un élément creux de structure, ce qui donne lieu à la formation d'un organe d'étanchéité destiné à cet élément.
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Designated States: AU, CA, MX
European Patent Office (AT, BE, CH, CY, DE, DK, ES, FI, FR, GB, GR, IE, IT, LU, MC, NL, PT, SE)
Publication Language: English (EN)
Filing Language: English (EN)
Also published as:
MXPA/a/1999/009937EP1007334CA2287957AU1998072802