US20240423309A1

US20240423309A1 - Head protection hood

Info

Publication number: US20240423309A1
Application number: US18/698,523
Authority: US
Inventors: Christopher Kühn
Original assignee: ODM GmbH
Current assignee: ODM GmbH
Priority date: 2021-10-04
Filing date: 2022-10-04
Publication date: 2024-12-26
Also published as: EP4412483A1; WO2023057435A4; WO2023057435A1; JP7689630B2; JP2024536450A

Abstract

A head protection bonnet for wearing under a steel helmet or under a ballistic helmet, having an outer layer, a damping layer at least indirectly adjacent to the outer layer and an inner fabric layer, wherein the outer layer has the following properties: fireproof or flame-retardant and cut-resistant and puncture-resistant.

Description

FIELD OF THE INVENTION

The invention relates to a head protection bonnet for wearing under a steel helmet or under a ballistic helmet comprising an outer layer, a damping layer at least indirectly adjacent to the outer layer and an inner fabric layer.

BACKGROUND OF THE INVENTION

A protective head cover is already known from DE 9108221 U1.
US 2002/0068152 A1 describes an inner layer for helmets that has several bubbles filled with paraffin for cooling purposes.
WO 2008/149127 A1 describes a multi-layer fabric in which paraffin microcapsules are provided in one layer for cooling purposes.

SUMMARY OF THE INVENTION

The invention is based on the task of designing and arranging a head protection bonnet in such a way that improved wearing comfort and safety are guaranteed.
The problem is solved in accordance with the invention in that the outer layer has the following properties: fireproof or flame-retardant and cut-resistant and puncture-resistant. This ensures maximum protection, particularly for armoured personnel who do not wear a ballistic helmet. The outer layer also has at least one of the following properties: it is non-melting and non-drip, water-repellent, dimensionally stable, abrasion-resistant, tear-resistant and washable. The outer layer is formed from one or more yarns or a fibre, wherein a first yarn or a first fibre has a dTex value T1, with 300<=T1<=440 or with T1=370 and wherein a second yarn or a second fibre has a dTex value T2, with 500<=T2<=600 or with T2=550. The dTex value has the unit g/10 km. The inner layer has a basis weight Gf, with 350 g/m²<=Gf<=410 g/m²or Gf=380 g/m².
The respective fabric layer can advantageously be designed as a fabric layer with corresponding woven structures of the fabric fibres. Depending on the material used, a fabric has favourable physical properties. For example, it is stronger or more resistant. A non-woven material may have a lower density and is therefore comparatively light.
The invention relates to a system consisting of a head protection bonnet as an under-helmet for a steel helmet or for a ballistic helmet.
Fire-resistant or flame-retardant as well as cut-resistant and/or puncture-resistant textiles such as aramid or modacrylic are used for the manufacture of head protection bonnet. Aramids are liquid crystal polymers. Aramids or aromatic polyamides (polyaramides) are not polyamides with aromatic groups in the main chain per se, but, according to a definition of the U.S. Federal Trade Commission, only those long-chain synthetic polyamides in which at least 85% of the amide groups are directly bonded to two aromatic rings. A modacrylic is a synthetic copolymer. Modacrylic fibres are modified acrylic fibres made from acrylonitriles, but larger quantities of other polymers are added to produce the copolymers.
It can also be advantageous if the inner fabric layer has the following properties: fire-resistant or flame-retardant. This provides enhanced protection. The inner fabric layer also has at least one of the following properties: it is non-melting and non-drip, absorbent, soft and washable.
Furthermore, it can be advantageous if the inner fabric layer is designed as a cooling layer and has a cooling medium connected to the fabric layer or a cooling medium integrally contained in the fabric layer, which always remains in the fabric layer, whereby the cooling medium changes its state of aggregation when heat is introduced. The cooling medium is a so-called pcm (phase change material) that can absorb body heat, whereby it at least partially changes its aggregate state from solid to liquid. This ensures temperature equalisation between the inner layer of material and the scalp. This cooling property of the inner fabric layer is accompanied by increased wearing comfort. The fabric layer can also be designed as a fabric layer. The cooling medium is an integral part of the inner fabric layer, whereby the cooling medium has capsules or chambers in which the actual coolant (pcm) is contained. The capsules or chambers are connected or interwoven with the inner fabric layer so that they do not detach from the fabric layer. The capsules or chambers are a few tenths of a micrometre in size and cannot be seen or felt in the inner fabric layer. The inner fabric layer can be applied directly to the part of the body to be protected, such as the head. An additional intermediate layer between the inner fabric layer and the body part would be disadvantageous, as it would insulate the body part relative to the inner fabric layer.
It can also be advantageous if the cooling medium has a coolant and is integrated into the fabric layer or is absorbed by the fabric layer, with paraffin being provided as the coolant. The paraffin is stabilised with a defined melting point of around 30° C. and is contained in a capsule or chamber. In the case of a fabric layer, the paraffin is integrated into the fabric layer via the capsule or absorbed by the fabric layer. The capsules or chambers do not change their aggregate state. Only the coolant contained inside, in this case paraffin, changes its state of aggregation when it absorbs or releases thermal energy.
Advantageously, the damping layer can be designed as an impact protection layer made of plastic or foam and adaptable to the shape of the head. The foam design is more comfortable to wear.
It can be of particular importance for the present invention if at least one first intermediate layer is provided, which is designed as a spacer layer and which adjoins the inner fabric layer. The second intermediate layer has a thickness of 4.5 mm to 7 mm or 5.5 mm to 6 mm. The cooling effect of the inner layer is improved by the spacer layer and the associated air cushion. It also improves the drying of the inner fabric layer and therefore also the absorption of perspiration.
In connection with the design and arrangement according to the invention, it can be advantageous if the inner fabric layer is composed of a base fabric B and a functional fabric F, with 60%-80% base fabric B and 20%-40% functional fabric F, wherein the base fabric B is formed from cotton or other moisture-absorbing materials, such as Modacryl and/or Lyocel, and the functional fabric F has a cooling effect or a temperature equalising effect. The functional fabric F has a cellulose content of approximately 50 to 65% by weight or 55 to 57% by weight. In the functional fabric F, the paraffinised yarn has a proportion of 25 to 34% by weight or 28 to 30% by weight. The functional fabric F also has an organic modified mineral. The base fabric B can consist of 100% cotton or 70-80% modacrylic and 20-30% Lyocel. Lyocel is an artificial fabric and consists of processed wood fibres. This type of synthetic fabric is also known under the brand name Tencel.
It can also be advantageous if the outer layer is formed from aramid and/or para-aramid and/or modacrylic and/or an antistatic conductive, carbon-containing lightweight fibre, such as the fibre with the brand name Belltron. The outer layer can consist of 93% aramid, 5% para-aramid and 2% of the lightweight fibre. It is therefore fire-resistant and flame-retardant as well as cut-resistant and puncture-resistant.
In connection with the formation and arrangement according to the invention, it can be advantageous if the first intermediate layer is formed from a plurality of rods or hair arranged parallel to each other or at an acute angle α to each other, which are aligned transversely to the inner fabric layer. This ensures the function as a spacer layer. It may be of particular importance for the present invention if a second intermediate layer is provided, the first intermediate layer being interwoven with the second intermediate layer and with the inner fabric layer. This ensures a stable structure.
It may also be the case that the spacer layer together with the first intermediate layer or together with the fabric layer form a composite layer and the head protection bonnet is made up of 3 layers or if the spacer layer together with the fabric layer and the first intermediate layer are regarded as a composite layer and the head protection bonnet is made up of 2 layers. The spacer layer is not stable on its own because, by definition, it is only formed from hair arranged next to each other. From this perspective, the spacer layer can only be further processed as part of a composite layer, i.e. it can be combined with at least the damping layer to form the protective head cover. In the case of a composite layer consisting of three layers, the protective head cover only has two layers. If the composite layer is two-layered, then the head protection bonnet only has three layers. Only if no composite layer is used does the head protection bonnet have four layers. However, more than four layers are not necessary. This makes the construction of the head protection bonnet less heavy and less cost-intensive and production-intensive.
Furthermore, the use of fire-resistant or flame-retardant and cut-resistant and puncture-resistant textiles, such as aramid or modacrylic, can be advantageous for an outer layer of a head protection bonnet, especially for a fabric layer.
A ballistic helmet as bullet protection can be a steel helmet.

BRIEF DESCRIPTION OF THE DRAWINGS

Further advantages and details of the invention are explained in the patent claims and in the description and illustrated in the figures. It shows:

FIG. 1 A sectional view of the head protection bonnet as a schematic sketch;

FIG. 2 a ballistic helmet with inserted head protection bonnet;

FIG. 3 a magnified detailed view of the intermediate layers;

FIG. 3 b alternative embodiment to FIG. 3 a;

FIG. 3 c an enlarged detailed view of the intermediate layers

FIG. 4 capsule with coolant inside.

A head protection bonnet 1, shown in principle in the sectional view in FIG. 1 , has a four-layer structure. It has an outer layer 3, a damping layer 1.1 at least indirectly adjacent to the outer layer 3 and an inner fabric layer 1.2. A first intermediate layer 1.3 and a second intermediate layer 1.4 are arranged between the damping layer 1.1 and the fabric layer 1.2, whereby the first intermediate layer 1.3 is placed between the inner layer 1.2 and the second intermediate layer 1.4. The damping layer 1.1 is preferably made of foam and forms a cushioning and impact protection layer.
The first intermediate layer 1.3 is designed as a so-called spacer layer and ensures a spatial distance between the inner layer 1.2 and the second intermediate layer 1.4. This spatial distance allows for an improved welding application and removal function of the inner layer 1.2.
The inner layer 1.2 also has a cooling medium 2, which is integrally accommodated or arranged in the inner layer 1.2 and is in the form of paraffin. The cooling medium has a corresponding heat capacity and ensures a corresponding heat absorption for cooling purposes of the scalp of the wearer of the head protection bonnet 1.
In the embodiment example in FIG. 2 , the head protection bonnet 1 is integrated into a steel helmet or ballistic helmet 4 as an inner lining. The associated functional properties are as described for the embodiment example in FIG. 1 .
FIGS. 3 a, 3 b show the inner fabric layer 1.2 with the first intermediate layer 1.3 arranged above it and the second intermediate layer 1.4 enlarged. The second intermediate layer 1.4 adjoins the first intermediate layer 1.3 or the spacer layer at the top. While the fabric layer 1.2 and the second intermediate layer 1.4 are formed from a textile material, the spacer layer 1.3 has a rod or hair structure. These rods or hair are formed as pile threads. According to the embodiment example in FIG. 3 a, the hair or sticks 1.3 a are arranged at an angle α to each other. This angle α is an acute angle of about 40°. According to the embodiment example in FIG. 3 b, the sticks or hair 1.3 a are aligned parallel to each other and at the same time normal to the neighbouring fabric layer 1.2 or intermediate layer 1.4. The spacer layer 1.3 is mechanically connected to both the fabric layer 1.2 and the second intermediate layer 1.4, for example by weaving. The spacer layer 1.3 can also be regarded as a composite layer together with the second intermediate layer 1.4. Likewise, the spacer layer 1.3 together with the fabric layer 1.2 and the second intermediate layer 1.4 can be regarded as a composite layer. This is because the spacer layer 1.3 is not stable on its own because, by definition, it is only formed from hair arranged next to each other.
As shown in principle in FIG. 3 b, the spacer layer 1.3 has a volume V, which is composed of the volume S of the sticks 1.3 a located therein and the remaining air volume L. The ratio S/L of air volume L to volume S is approximately 0.01 to 0.1.
As shown in FIGS. 3 a, 3 b, the fabric layer 1.2 has the outer surface 1.2 a. In addition, the fabric layer 1.2 has a cooling medium 2, such as paraffin, which is integrated into the fabric layer 1.2.
According to embodiment example FIG. 3 c, the damping layer 1.1 is provided adjacent to the second intermediate layer 1.4.
The same is also intended for the embodiment example FIG. 3 a. The architecture of the first intermediate layer 1.3 or the rod or hair structure is independent of the first or second intermediate layer 1.3, 1.4.
FIG. 4 shows a capsule or chamber 2.1 with a coolant 2.2 contained therein, which is a pcm material. The chamber 2.1 itself does not change its aggregate state. It serves as a reservoir and is mechanically connected to the fabric of the fabric layer 1.2 for integration into the inner fabric layer 1.2.

LIST OF REFERENCE SYMBOLS

- 1 Head protection bonnet
- 1.1 Outer layer, damping layer
- 1.2 inner fabric layer, inner layer
- 1.2 a Outer surface
- 1.3 First intermediate layer, spacer layer
- 1.3 a Sticks, hair
- 1.4 Second intermediate layer
- 2 Cooling medium
- 2.1 Capsule, chamber
- 2.2 Coolant
- 3 Outer layer
- 4 Steel helmet, ballistic helmet
- L Volume
- S Volume
- V Volume
- α Angle

Claims

What is claimed is:

1. A head protection bonnet for wearing under a steel helmet or under a ballistic helmet, comprising:

an outer layer,

a damping layer at least indirectly adjoining the outer layer and

an inner fabric layer,

wherein the outer layer has the following properties: fire-resistant or flame-retardant and cut-resistant and puncture-resistant, and

wherein the inner fabric layer is composed of a base fabric B and a functional fabric F, with 60%-80% base fabric B and 20%-40% functional fabric F, wherein the base fabric B is formed from cotton or other moisture-absorbing materials, such as Modacryl and/or Lyocel, and the functional fabric F is formed from a material which has a cooling effect.

2. The head protection bonnet according to claim 1, wherein the inner fabric layer has the following properties: fire-resistant or flame-retardant.

3. The head protection bonnet according to claim 1, wherein the inner fabric layer is designed as a cooling layer and has a cooling medium connected to the fabric layer or a cooling medium which is integrally contained in the fabric layer and always remains in the fabric layer, the cooling medium changing its aggregate state when heat is introduced.

4. The head protection bonnet according to claim 3, wherein the cooling medium comprises a coolant and is integrated into the fabric layer or is absorbed by the fabric layer, paraffin being provided as the coolant.

5. The head protection bonnet according to claim 1, wherein the damping layer is designed as an impact protection layer which is made of plastic or foam and can be adapted to the shape of the head.

6. The head protection bonnet according to claim 1, wherein at least one first intermediate layer is provided, which is designed as a spacer layer and which adjoins the inner fabric layer.

7. (canceled)

8. The head protection bonnet according to claim 1, wherein the outer layer is formed from aramid and/or para-aramid and/or modacrylic and/or an antistatically conductive, carbon-containing lightweight fibre.

9. The head protection bonnet according to claim 6, wherein the first intermediate layer is formed from a plurality of sticks or hair arranged parallel to each other or at an acute angle a to each other, which are aligned transversely to the inner fabric layer.

10. The head protection bonnet according to claim 6, wherein a second intermediate layer is provided, wherein the first intermediate layer is interwoven with the second intermediate layer and with the inner fabric layer.

11. The head protection bonnet according to claim 1, wherein the spacer layer together with the second intermediate layer or together with the fabric layer form a composite layer and the head protection bonnet has a 3-layer design or in that the spacer layer together with the fabric layer and the second intermediate layer are regarded as a composite layer and the head protection bonnet is of a 2-layer design.

12. A use of fire-resistant or flame-retardant and cut-resistant and puncture-resistant textiles such as aramid or modacrylic for an outer layer of a head protection bonnet.

13. A system comprising a head protection bonnet according to claim 1 and a ballistic helmet.

14. The head protection bonnet according to claim 2, wherein the inner fabric layer is designed as a cooling layer and has a cooling medium connected to the fabric layer or a cooling medium which is integrally contained in the fabric layer and always remains in the fabric layer, the cooling medium changing its aggregate state when heat is introduced, and wherein the cooling medium comprises a coolant and is integrated into the fabric layer or is absorbed by the fabric layer, paraffin being provided as the coolant.

15. The head protection bonnet according to claim 14, wherein the damping layer is designed as an impact protection layer which is made of plastic or foam and can be adapted to the shape of the head, and wherein at least one first intermediate layer is provided, which is designed as a spacer layer and which adjoins the inner fabric layer.

16. The head protection bonnet according to claim 15, wherein the outer layer is formed from aramid and/or para-aramid and/or modacrylic and/or an antistatically conductive, carbon-containing lightweight fibre, and wherein the first intermediate layer is formed from a plurality of sticks or hair arranged parallel to each other or at an acute angle a to each other, which are aligned transversely to the inner fabric layer.

17. The head protection bonnet according to claim 16, wherein a second intermediate layer is provided, wherein the first intermediate layer is interwoven with the second intermediate layer and with the inner fabric layer, and wherein the spacer layer together with the second intermediate layer or together with the fabric layer form a composite layer and the head protection bonnet has a 3-layer design or in that the spacer layer together with the fabric layer and the second intermediate layer are regarded as a composite layer and the head protection bonnet is of a 2-layer design.

18. A system comprising a head protection bonnet according to claim 17 and a ballistic helmet.