BAG

Description

Technical area

[0001] The invention relates to a bag with a bag wall made of a flexible laminate which has an insulating layer forming material and with a closure which can close the bag wall. State of the art

[0002] Fireproof bags for mobile phones are known, for example, from CN204796963U. The bag wall of such bags comprises a laminate made of various materials, including a layer of an intumescent material to contain a fire. A disadvantage of such bags is that they have a multi-layer laminate as the bag wall, which is comparatively heat-insulating. This particularly increases the risk of overheating of a battery that is housed and charged in the bag. Furthermore, such laminates are comparatively complex to manufacture and, due to the high number of consecutive layers, are relatively inflexible, which makes the bag difficult to handle.

[0003] Furthermore, DE 20212 003810 U1 discloses a thermally conductive composite element comprising at least one molded body containing expanded graphite and at least one textile fabric arranged on at least one side of the molded body, wherein the at least one textile fabric is bonded to the molded body via an inorganic adhesive. This device is intended for use in a surface cooling or surface heating system. Description of the invention

[0004] The invention therefore sets itself the task of modifying the design of a bag of the type described above in such a way that, despite the bag's stable fire protection, the risk of overheating during battery charging is minimal. Furthermore, the bag should be structurally simple and easy to handle.

[0005] The invention solves the problem by the features of claim 1.

[0006] If the laminate has a flexible fabric coated with the intumescent layer as a carrier, a comparatively flexible and thin pocket wall can be created that still offers high fire resistance. This is because the fabric can flexibly follow the intumescent layer as it expands, thus locally containing the fire within the pocket. This also offers significant temperature resistance if the fabric is a fiberglass fabric. For this purpose, the intumescent layer can, for example, also be based on expandable graphite.

[0007] In addition to the high fire safety of the bag according to the invention, the fabric with a non-foamed insulating layer can also exhibit high thermal permeability, thus preventing a fire hazard, for example, during charging. The bag according to the invention is therefore particularly suitable as a container for goods, preferably goods with batteries or batteries, and especially for transporting them.

[0008] The case is preferably a charging case. The case can also have any shape, such as a case, a box, etc.

[0009] Fire resistance can be further increased if the fabric incorporates the intumescent layer on the inside of the bag. Furthermore, this inner layer of intumescent layer can significantly increase the bag's reaction speed for firefighting.

[0010] If the laminate on the inside of the bag has a film that covers the insulator, the electrical devices or equipment contained therein can be damaged.

[0011] Batteries can be protected from damage such as scratches. This film can also protect the insulating layer from abrasion or wear caused by electrical devices or batteries, which can further increase the stability of the bag.

[0012] The fabric preferably has a basis weight of 50 to 500 g / m2, in particular 140 to 250 g / m2, in order to ensure sufficient flexibility and strength in the event of fire.

[0013] It can be considered sufficient to contain fires if the intumescent layer has a surface weight of at least 300 g / m2, in particular of at least 700 g / m2.

[0014] Preferably, the laminate has a surface weight of maximum 4000 g / m2, in particular maximum 2000 g / m2, in particular maximum 1200 g / m2, in order to ensure a sufficiently flexible outer wall for easy handling despite fire resistance.

[0015] Sufficient flexibility of the laminate can be achieved if the laminate has a thickness of 0.5 to 5 mm.

[0016] If the laminate is perforated, this can also have a significant impact on the cooling of batteries, for example, when being charged, thus protecting them from overheating. In the event of a fire, the foaming intumescent layer seals this perforation, allowing the bag to maintain high fire resistance despite the perforation.

[0017] A bag that is particularly stable, even in the event of a fire, can be created by having bands, especially webbing, running along the side edges that enclose the laminate at the respective side edge and are sewn to the laminate. This allows the band sewn to the laminate fabric to withstand the comparatively high compressive forces of the foaming intumescent layer. This also ensures that the bag is safe from foam leakage.

[0018] Constructive simplicity can be achieved if the pocket wall is formed from a laminate that is bent over and thus forms the pocket bottom.

[0019] The bag can withstand high temperatures if the seam or generally all seams of the bag 1 have a flame-resistant yarn, in particular Kevlar yarn.

[0020] The risk of a fire spreading from the bag can be reduced if the closure has two strips, in particular magnetic strips or spring steel strips, which work together to close the bag wall and are attached to the laminate.

[0021] Preferably, the bag has a carrying strap so that the bag can be safely transported to a safe place in the event of a fire.

[0022] If the carrying strap is made of a fabric strap, especially a webbing strap, it can be worn with a high level of stability even at comparatively high temperatures in the bag, for example caused by a fire.

[0023] Preferably, the carrying strap is attached to the bag in the area of ​​the bag opening to prevent items, such as mobile phones, from falling out when carried.

[0024] A pocket that is particularly stable in the event of a fire can be created if the pocket wall forms two opposite wall ends in the area of ​​the pocket opening, which overlap in the area of ​​the pocket opening.

[0025] It is also conceivable that the closure has a zipper or another form-fitting closure device to increase the fire resistance of the bag.

[0026] The construction of the bag can be simplified if the zipper has a first side part with first closing elements and a second side part with second closing elements, wherein the side parts are fastened to the bag wall, in particular via a first seam each, and are provided in particular on the outside of the bag.

[0027] For this purpose, for example, the first wall end to which the first side part is fastened can extend at least over the second closing elements of the second side part.

[0028] Preferably, the second wall end to which the second side part is attached extends at most to the second closing members.

[0029] If at least one side part is attached to the pocket wall via a second seam, with the seam being at a distance from the closing elements of this side part that is smaller than the closing element width of the zipper, this can ensure a stable overlap of the wall ends.

[0030] A cable entry through the bag wall can make handling easier. The cable entry is preferably also designed as a pressure relief valve. Short description of the drawing

[0031] The figures illustrate the subject matter of the invention in more detail using several exemplary embodiments. Fig. 1a partially torn side view of a bag according to a first embodiment, Fig. 2a sectional view of theFig. 1 , Fig. 3 a three-dimensional view of the bag according to Fig. 1 with a different closure, Fig. 4 a schematic sectional view of the closure of the bag according to Fig. 3 , Fig. 5a view of a opposite the Fig. 1 larger bag according to another embodiment and Fig. 6 a schematically illustrated sectional view of the closure of the bag according to Fig. 5 . Way to implement the invention

[0032] After the Figures 1 to 4 A bag 1 according to a first embodiment is shown. This bag 1 has a bag wall 2, which forms a receptacle 3 for, for example, a mobile phone 4 (as an example of a product with a battery). The mobile phone 4 is optionally inductively charged via an inductive charging station 5 through the bag wall 2. In this case, the bag 1 is a charging bag 17.

[0033] Access to the receptacle 3 can be created via a closure 6 of the pocket 1, or the pocket 1 can be opened or closed with it. The pocket wall 2 consists of a flexible laminate 7, which has an insulating layer 7.1, as shown in Fig. 2 can be recognized.

[0034] According to the invention, high fire resistance is achieved with high flexibility of the pocket wall 2 in that the laminate 7 has a flexible fabric 7.2, namely glass fiber fabric, as a carrier, which is coated with the intumescent layer 7.1 and thus directly adjoins the flexible fabric 7.2.

[0035] As in the Fig. 2 As can be seen, the fabric 7.2 has the intumescent layer 7.1 on the inside 1.1 of the pocket 1, whereby a fire in the mobile phone 4 is quickly contained by the intumescent layer 7.1. This is because the intumescent layer 7.1 is foaming and based on expandable graphite.

[0036] The laminate 7 also has a film 7.3 on the inside 1.1 of the pocket 1, which completely covers the intumescent layer 7.1. This protects the intumescent layer 7.1 from abrasion and also facilitates insertion of a mobile phone 4 into the pocket 1.

[0037] Preferably, the outer side 1.6 of the pocket 1 does not have an intumescent layer 7.1 or the fabric 7.2 on this side is free of the intumescent layer 7.1.

[0038] The fabric 7.2 has a basis weight of 50 to 500 g / m2, in particular 140 to 250 g / m2. The intumescent layer 7.1 has a basis weight of at least 300 g / m2, in particular at least 700 g / m2. The laminate 7 has a maximum basis weight of 2500 g / m2, in particular a maximum of 950 g / m2. Furthermore, the laminate 7 has a thickness of 0.5 to 5 mm.

[0039] In addition, the laminate 7 is perforated by providing holes 7.4 in the laminate 7, preferably at regular intervals.

[0040] The closure 6 consists of Fig. 1 from two strips 6.1, 6.2, namely magnetic strips or spring steel strips, which cooperate to close the pocket wall 2. These strips 6.1, 6.2 can be embedded in tabs, forming the laminate 7 - according to Fig. 1 the strips 6.1, 6.2 are shown sewn to the laminate 7 via a seam 8.

[0041] The pocket 1 is reinforced along the side edges 1.2, 1.3. This is achieved with fabric tape 9.1, 9.2, preferably webbing, running along the side edges 1.2, 1.3. The fabric tapes are folded over or encompass the side edges 1.2, 1.3 and are sewn to the laminate via a seam 8, namely a straight stitch. A flame-resistant yarn, preferably Kevlar yarn, is used for this seam 8 or generally for the other seams 14, 15 of the pocket 1, creating a stable bond between the fabric tape 9.1 or 9.2 and the flexible fabric 7.2 of the laminate 7.

[0042] The pocket 1 also has a comparatively simple construction. The pocket wall 2 is formed by a laminate 7 that is folded over and thus forms the pocket bottom 1.4. At the side edges 1.2, 1.3, the overlapping halves of the laminate 7 are sewn together with the respective fabric tapes 9.1, 9.2.

[0043] On the side opposite the pocket base 1.4, the pocket opening 1.5 with the closure 6 is provided. The receptacle 3 of the pocket 1 is only accessible through this pocket opening 1.5. Generally, it is mentioned that the pocket 1 can be in the form of a case.

[0044] Again Fig. 1 The bag 1 also has a carrying strap 10. The carrying strap 10 is made of a fabric strap 9.3, namely webbing. This allows the bag to be carried securely and safely even in the event of a fire. The carrying strap 10 is preferably attached to the bag 1 in the area of ​​the bag opening 1.5 so that the bag can still be carried safely in the event of a fire. Furthermore, it can be used to prevent, for example, the burning battery or telephone from falling out.

[0045] It is also conceivable that a fabric band 9.1 or 9.2 merges into the fabric band 9.2 of the carrying strap 10 at a side edge 1.2 or 1.3.

[0046] Preferably, the fabric 7.2 has a basis weight of 200 g / m2, the intumescent layer 7.1 has a basis weight of 750 g / m2, and the laminate 7 with film has a basis weight of approximately 950 g / m2. The laminate 7 is 0.7 mm thick. This is sufficient to securely hold conventional mobile phones in the pocket 1. For example, a basis weight of 500 - 800 g / m2 has proven sufficient for batteries up to 5000 mAh. For example, a basis weight of 800 - 1400 g / m2 has proven sufficient for batteries from 5000 to 10000 mAh. For example, a basis weight of 1400 - 2400 g / m2 has proven sufficient for batteries of 10000 mAh and above.

[0047] Bag 1 after Fig. 3has another closure 6, namely a zipper 11. The zipper 11 has a first side part 12 with first closing elements 12a, namely spirals, and a second side part 13 with second closing elements 13a, also spirals. The side parts 12 and 13 are each firmly connected to the pocket wall 2 via a first seam 14. These seams 14 are located on the edge of the side parts 12, 13. In addition, the side parts 12, 13 are provided on the outer side 1.6 of the pocket 1, as shown in Fig. 4 to recognize.

[0048] The pocket wall 2 forms two opposite wall ends 2.1, 2.2 in the area of ​​the pocket opening 1.5, which overlap in the area of ​​the pocket opening 1.5. For this purpose, the first wall end 2.1, to which the first side part 12 is attached, extends over the second closing elements 13a of the second side part 13, as shown in Fig. 4 to recognize.

[0049] The second wall end 2.2, to which the second side part 13 is attached, extends to the second closing elements 13a.

[0050] In addition, the second side part 13 is attached to the pocket wall 2 with a second seam 15. This second seam 15 has a distance A from the closing elements 13a of the second side part 13 that is smaller than the closing element width B of the zipper 11. This ensures a correct overlap of the wall ends 2.1 and 2.2, as the wall end 2.1 is always located below the wall end 2.2, as seen from the zipper 11.

[0051] In addition, the bag 1 shows Fig. 4a cable duct 16. The cable duct can be formed, for example, by a cut in the pocket wall 2 and a preferably round patch extending over the cut, which is sewn circumferentially to the pocket wall 2. The inside 1.1 of the pocket 1 is thus accessible via an opening in the patch, for example an X-shaped opening. In the event of a fire, the intumescent layer 7.1 closes the cut in the pocket wall 2 below the patch, so that the cable duct 16 is tightly sealed.

[0052] After the Figures 5 and 6 A bag 1 according to a second embodiment is shown. This bag 1, as a container for transporting goods, has the shape of a box. Here, too, a zipper 11 is used as the closure 7, behind which, viewed from the outside 1.6 of the bag 1, the wall ends 2.1 and 2.2 of the bag wall 2 overlap, as is particularly shown in the Fig. 6can be seen. For example, vermiculite pads and / or other insulating materials can be added to the box to resist a fire in bag 1 or to ensure the safe transport of goods.

[0053] Thus, the bag according to the invention can be particularly suitable as a charging bag and / or as a bag for the transport of dangerous goods, preferably batteries or goods with batteries.

Claims

1. Bag having a bag wall (2) made of a flexible laminate (7) which has an insulating layer-forming component (7.1), and having a closure (6) which can close a bag opening (1.5) of the bag (1), characterized in that the laminate (7) has as carrier a flexible fabric (7.2), more particularly glass fiber fabric, which is coated with the insulating layer-forming component (7.1), and wherein the insulating layer-forming component (7.1) is intumescent and based on expandable graphite.

2. Bag according to claim 1, characterized in that the fabric (7.2) has the insulating layer-forming component (7.1) on the inside (1.1) of the bag (1).

3. Bag according to claim 2, characterized in that the laminate (7) has a film on the inside (1.1) of the bag (1) which covers the insulating layer-forming component (7.1).

4. Bag according to one of claims 1 to 3, characterized in that the fabric (7.2) has a basis weight of 50 to 500 g / m2, more particularly 140 to 250 g / m2, and / or the insulating layer-forming component (7.1) has a basis weight of at least 300 g / m2, more particularly at least 700 g / m2.

5. Bag according to claim 4, characterized in that the laminate (7) has a basis weight of at most 4000 g / m2, more particularly at most 2000 g / m2, more particularly at most 1200 g / m2.

6. Bag according to one of claims 1 to 5, characterized in that the laminate (7) has a thickness of 0.5 to 5 mm and / or the laminate (7) is perforated.

7. Bag according to one of claims 1 to 6, characterized in that the bag (1) has a fabric band (9.1, 9.2), more particularly webbings, extending along the side edges (1.2, 1.3), which encloses the laminate (7) at the respective side edge (1.2, 1.3) and is sewn to the laminate (7), wherein the bag wall (2) is formed more particularly by a laminate (7) which is bent over and thus forms the bag bottom (1.4), wherein the seam (8) comprises more particularly a fire-resistant yarn (8.1), more particularly Kevlar yarn.

8. Bag according to one of claims 1 to 7, characterized in that the bag (1) has a carrying loop (10), wherein the carrying loop (10) consists more particularly of a fabric band (9.3), more particularly a webbing, wherein the carrying loop (10) is fastened to the bag (1) more particularly in the region of the bag opening (1.5).

9. Bag according to one of claims 1 to 8, in that the bag wall (2) forms two opposite wall ends (2.1, 2.2) in the region of the bag opening (1.5), which overlap in the region of the bag opening (1.5).

10. Bag according to one of claims 1 to 9, characterized in that the closure (6) comprises a zipper fastener (11) or another closure means based on positive closure.

11. Bag according to claim 10, characterized in that the zipper fastener (11) has a first side part (12) with first closing members (12a) and a second side part (13) with second closing members (13a), wherein the side parts (12, 13) are fastened to the bag wall (2), more particularly via a first seam (14) in each case, and are provided more particularly on the outside (1.6) of the bag (1).

12. Bag according to claim 11, characterized in that the first wall end (2.1), to which the first side part (12) is attached, extends at least over the second closing members (13a) of the second side part (13).

13. Bag according to one of claims 11 to 12, characterized in that the second wall end (2.2), to which the second side part (13) is attached, extends at most as far as the second closing members (13a).

14. Bag according to one of claims 11 to 13, characterized in that at least one side part (13) is fastened to the bag wall (2) via a second seam (15), wherein the seam (15) has a distance (A) from the closing members (13a) of this side part (13) that is smaller than the closing member width (B) of the zipper fastener (11).

15. Use of a bag (1) according to one of claims 1 to 14 as a cargo bag and / or as a bag for transporting hazardous goods, preferably batteries or goods with batteries.