# US 2019/0315291 A1 · Printed damping element

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- Number: US 2019/0315291 A1
- Document ID: US20190315291A1
- Status: Published application
- Kind: A1
- Application number: 16/467,139
- Filed: 2017-12-05
- Published: 2019-10-17
- Earliest claimed: 2016-12-09
- Assignees: Sika Technology AG
- Applicants: Sika Technology AG
- Inventors: Vincent BELPAIRE
- Web page: https://patentgrep.com/patent/US20190315291A1

## CPC

- B60R 13/08: Insulating elements, e.g. for sound insulation {(sound insulating linings for trains B61D17/185; drivers' cabs for load-carrying vehicles insulated against vibrations or noise B62D33/0604; thermal or acoustic insulation of engines F02B77/11; damping of sounds using compensation by electro-acoustic methods G10K11/178)}
- B60R 13/0815: {Acoustic or thermal insulation of passenger compartments (wall or roof liners integrating the insulating function B60R13/02; insulating floor mats or carpets B60N3/04)}
- B29C 44/188: {Sealing off parts of the cavities}
- B33Y 80/00: Products made by additive manufacturing
- B29K 2063/00: Use of {EP, i.e.} epoxy resins {or derivatives thereof}, as moulding material
- B29K 2101/12: Thermoplastic materials
- B29K 2105/0005: {containing compounding ingredients (releasing, lubricating or separating agents B29C33/56, fibers B29K2105/08, B29K2105/12; fillers B29K2105/16, recycled material B29K2105/26)}
- B29K 2105/0094: {having particular viscosity}
- B29K 2105/04: cellular or porous
- B29K 2633/04: Polymers of esters
- B29K 2675/00: Use of {PU, i.e.} polyureas or polyurethanes {or derivatives thereof,} for preformed parts, e.g. for inserts
- B29K 2677/00: Use of {PA, i.e.} polyamides, e.g. polyesteramides {or derivatives thereof,} for preformed parts, e.g. for inserts
- B29K 2995/0002: insulating
- B29K 2995/0069: non-permeable
- B29L 2009/00: Layered products
- B29L 2031/30: Vehicles, e.g. ships or aircraft, or body parts thereof {(vanes or blades B29L2031/08, air bags B29L2022/027)}
- B60R 2013/0807: {Arrangements of fasteners or clips specially adapted therefore}
- B60R: VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B29C: SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING (making preforms B29B11/00; making laminated products by combining previously unconnected layers which become one product whose layers will remain together B32B37/00 - B32B41/00)
- B33Y: ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
- B29K: INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR {MOULDS, } REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29L: INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES

## Abstract

A dam element for the damming of a structure element within a vehicle includes a support element and an expandable element. The support element consists of at least one printed strand of a first material, where the first material is in a solid physical state at least up to a temperature of from 120° C. to 200° C., and the expandable element consists of at least one printed strand of a second material, where the second material is expandable at a temperature between 120° C. and 200° C. The dam element here has, at a point of greatest thickness, measured perpendicularly to a plane of the dam element, at least two, and at most ten, mutually superposed layers.

## Claims

### Claim 1

A dam element for the damming of a structure element within a vehicle, where the dam element comprises
a support element consisting of at least one printed strand of a first material, where the first material is in a solid physical state at least up to a temperature of from 120° C. to 200° C.,
an expandable element consisting of at least one printed strand of a second material, where the second material is expandable at a temperature between 120° C. and 200° C.,
where the dam element has, at a point of greatest thickness, measured perpendicularly to a plane of the dam element, at least two, and at most ten, mutually superposed layers.

### Claim 2 (depends on 1)

The dam element as claimed in claim 1, where the dam element has at least one arm which is at least to some extent at an angle to the plane of the dam element, and which is composed of the first material or of the second material or of the first and the second material.

### Claim 3 (depends on 1)

The dam element as claimed in claim 1, where the printed strands of the first material and/or of the second material have a rounded cross section with diameter from 1 mm to 6 mm, or a cross section with height from 1 mm to 6 mm and width from 2 mm to 30 mm.

### Claim 4 (depends on 1)

The dam element as claimed in claim 1, where the support element and/or the expandable element consist(s) of at least one, and at most ten, trace(s).

### Claim 5 (depends on 1)

The dam element as claimed in claim 1, where the dam element comprises a fastening element for the fastening of the dam element.

### Claim 6 (depends on 5)

The dam element as claimed in claim 5, where the fastening element comprises injection-molded plastic and/or comprises metal.

### Claim 7 (depends on 5)

The dam element as claimed in claim 5, where the fastening element has a base which lies within the plane of the dam element, and which is cramped between two mutually superposed layers, or is in contact only with one layer.

### Claim 8 (depends on 5)

The dam element as claimed in claim 5, where the fastening element has a projection which is configured perpendicularly to the base, and which is cramped between two strands that, within the plane of the dam element, are adjacent to one another, or which is in contact only with one strand.

### Claim 9 (depends on 1)

A system with a structure element and with, arranged therein, a dam element as claimed in claim 1.

### Claim 10 (depends on 9)

The system as claimed in claim 9 where, before an expansion of the expandable element, the dam element covers from 20% to 60% of a cross section of the structure element.

### Claim 11

A process for the production of a dam element with a support element and with an expandable element for the use within a structure element of a vehicle, where the process comprises the steps of:
provision of a bed element;
printing of at least one strand made of a first material for the formation of a support element, where the first material is in a solid physical state at least up to a temperature of from 120° C. to 200° C.;
printing of at least one strand made of a second material for the formation of an expandable element, where the second material is expandable at a temperature of from 120° C. to 200° C.; and
removal of the dam element from the bed element;
where the strands are printed in a manner such that the dam element has, at a point of greatest thickness, measured perpendicularly to a plane of the dam element, at least two, and at most ten, mutually superposed layers.

### Claim 12 (depends on 11)

The process as claimed in claim 11, where the process comprises the further step of: reuse of the bed element for production of a following dam element after a dam element has been removed from the bed element.

### Claim 13 (depends on 11)

The process as claimed in claim 11, where the bed element has depressions and/or elevations for the formation of arms which at least to some extent are at an angle to the plane of the dam element.

### Claim 14 (depends on 11)

The process as claimed in claim 11, where the bed element has a positioning element, and where the process comprises the step of:
attachment of a fastening element within the positioning element and onto at least one layer of the first and/or of the second material.

### Claim 15 (depends on 11)

The process as claimed in claim 11, where during removal of the dam element from the bed element ejector elements are moved in relation to the bed element.