Inflation-Free Double-Sided Airbag and Preparation Method Thereof

Abstract

Disclosed are an inflation-free double-sided airbag and its preparation method. The inflation-free double-sided airbag includes upper airbags arranged into an array and connected to one another to form a planar body, lower airbags arranged into an array and connected to one another to form a planar body, an elastic layer disposed between the upper airbag and the lower airbag and having an upper surface connected to the upper airbag and a lower surface connected to the lower airbag, and a soft edge connecting portion disposed between two adjacent upper airbags and between two adjacent lower airbags. After the airbag is pierced, it still has the protection effect. When an external pressure is exerted onto the inflation-free double-sided airbag, the elastic material layer provides a buffering effect to minimize the degree of deformation of the airbags and reduce impacts on a user or a product.

Claims

1. An inflation-free double-sided airbag, comprising: a plurality of upper airbags arranged into an array and coupled to one another to form a planar body; a plurality of lower airbags arranged into an array and coupled to one another; and an elastic material layer, disposed between the upper airbag and the lower airbag, and the upper surface of the elastic material layer being coupled to the upper airbag, and the lower surface of the elastic material layer being coupled to the lower airbag, and a soft edge connecting portion formed between two adjacent upper airbags and between two adjacent lower airbags.

2. The inflation-free double-sided airbag of claim 1, wherein the upper airbag and the lower airbag are installed symmetrically with respect to the elastic material layer.

3. The inflation-free double-sided airbag of claim 1, wherein the upper airbag and lower airbag are staggered with one another.

4. The inflation-free double-sided airbag of claim 1, wherein the elastic material layer is a TPU layer, a TPE layer, or a PVC layer.

5. The inflation-free double-sided airbag of claim 4, wherein the elastic material layer has a thickness of 0.31.0 mm.

6. The inflation-free double-sided airbag of claim 1, wherein the width of the soft edge connecting portion and the width of the upper airbag are in a ratio of 1:15; and the width of the soft edge connecting portion and the width of the lower airbag are in the ratio of 1:15.

7. The preparation method of an inflation-free double-sided airbag according to claim 1, comprising: Step (1) Unilateral molding: preparing a flat thermoplastic material, heating the flat thermoplastic material to 120180 C. and then pressing the flat thermoplastic material by a pressure of 5kg/cm.sup.210 kg/cm.sup.2 to form a plurality of separated grooves, cooling the flat thermoplastic material to room temperature to obtain a single-sided airbag material; and Step (2) Sealing: taking two pieces of molded single-sided airbag material, and setting an elastic material layer between two pieces of single-sided airbag materials, and heating the elastic material layer to 120180 C. and then pressing the two pieces of molded single-sided airbag material and the elastic material layer altogether by a pressure of 10 kg/cm.sup.220 kg/cm.sup.2, and naturally cooling to room temperature for a formation.

8. The preparation method of an inflation-free double-sided airbag according to claim 2, comprising: Step (1) Unilateral molding: preparing a flat thermoplastic material, heating the flat thermoplastic material to 120180 C. and then pressing the flat thermoplastic material by a pressure of 5 kg/cm.sup.210 kg/cm.sup.2 to form a plurality of separated grooves, cooling the flat thermoplastic material to room temperature to obtain a single-sided airbag material; and Step (2) Sealing: taking two pieces of molded single-sided airbag material, and setting an elastic material layer between two pieces of single-sided airbag materials, and heating the elastic material layer to 120180 C. and then pressing the two pieces of molded single-sided airbag material and the elastic material layer altogether by a pressure of 10 kg/cm.sup.220 kg/cm.sup.2, and naturally cooling to room temperature for a formation.

9. The preparation method of an inflation-free double-sided airbag according to claim 3, comprising: Step (1) Unilateral molding: preparing a flat thermoplastic material, heating the flat thermoplastic material to 120180 C. and then pressing the flat thermoplastic material by a pressure of 5 kg/cm.sup.210 kg/cm.sup.2 to form a plurality of separated grooves, cooling the flat thermoplastic material to room temperature to obtain a single-sided airbag material; and Step (2) Sealing: taking two pieces of molded single-sided airbag material, and setting an elastic material layer between two pieces of single-sided airbag materials, and heating the elastic material layer to 120180 C. and then pressing the two pieces of molded single-sided airbag material and the elastic material layer altogether by a pressure of 10 kg/cm.sup.220 kg/cm.sup.2, and naturally cooling to room temperature for a formation.

10. The preparation method of an inflation-free double-sided airbag according to claim 4, comprising Step (1) Unilateral molding: preparing a flat thermoplastic material, heating the flat thermoplastic material to 120180 C. and then pressing the flat thermoplastic material by a pressure of 5 kg/cm.sup.210 kg/cm.sup.2 to form a plurality of separated grooves, cooling the flat thermoplastic material to room temperature to obtain a single-sided airbag material; and Step (2) Sealing: taking two pieces of molded single-sided airbag material, and setting an elastic material layer between two pieces of single-sided airbag materials, and heating the elastic material layer to 120180 C. and then pressing the two pieces of molded single-sided airbag material and the elastic material layer altogether by a pressure of 10 kg/cm.sup.218 20 kg/cm.sup.2, and naturally cooling to room temperature for a formation.

11. The preparation method of an inflation-free double-sided airbag according to claim 5, comprising Step (1) Unilateral molding: preparing a flat thermoplastic material, heating the flat thermoplastic material to 120180 C. and then pressing the flat thermoplastic material by a pressure of 5 kg/cm.sup.210 kg/cm.sup.2 to form a plurality of separated grooves, cooling the flat thermoplastic material to room temperature to obtain a single-sided airbag material; and Step (2) Sealing: taking two pieces of molded single-sided airbag material, and setting an elastic material layer between two pieces of single-sided airbag materials, and heating the elastic material layer to 120180 C. and then pressing the two pieces of molded single-sided airbag material and the elastic material layer altogether by a pressure of 10 kg/cm.sup.220 kg/cm.sup.2, and naturally cooling to room temperature for a formation.

12. The preparation method of an inflation-free double-sided airbag according to claim 6, wherein the flat thermoplastic material is heated to 120180 C. at a heating rate of 515 C./min in Step (1).

13. The preparation method of an inflation-free double-sided airbag according to claim 6, wherein the cooling rate in Step (1) is 3550 C./min.

14. The preparation method of an inflation-free double-sided airbag according to claim 6, wherein the elastic material layer is heated to 120180 C. at a heating rate of 2035 C./min in Step (2).

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0027] FIG. 1 is a cross-sectional view of a structure of the present invention; and

[0028] FIG. 2 is a cross-sectional view of another structure of the present invention.

DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0029] The technical contents of the present invention will become apparent with the detailed description of preferred embodiments accompanied with the illustration of related drawings as follows. It is intended that the embodiments and figures disclosed herein are to be considered illustrative rather than restrictive.

Embodiment 1

[0030] An inflation-free double-sided airbag comprises a plurality of upper airbags 1 arranged into an array and coupled to one another to form a planar body, a plurality of lower airbags 2 arranged into an array and coupled to one another to form a planar body, an elastic material layer 3 coupled between the upper airbag 1 and the lower airbag 2, and a soft edge connecting portion 4 disposed between any two of the adjacent upper airbags 1 and any two adjacent lower airbags 2, wherein the upper airbags 1, the lower airbags and the elastic material layer 3 are integrated into a one-piece structure.

[0031] Further, the upper airbag 1 and the lower airbag 2 are installed symmetrically with one another.

[0032] Further, the elastic material layer 3 is a TPU layer, and the TPU layer has a thickness of 0.3 mm.

[0033] Further, the width of the soft edge connecting portion 4 and the width of the upper airbag 1 and the lower airbag 2 are in the ratio of 1:5.

[0034] Further, the upper surface of the upper airbag 1 and the lower surface of the lower airbag 2 are substantially arc shaped.

[0035] The preparation method of the inflation-free double-sided airbag comprises the following two steps. Step (1) Unilateral Molding: Prepare a flat thermoplastic material. Heat the flat thermoplastic material to 120 C. and then press the flat thermoplastic material by a pressure of 10 kg/cm.sup.2 to form separated grooves. Cool the flat thermoplastic material to room temperature to obtain a single-sided airbag material. (2) Sealing: Prepare two pieces of the molded single-sided airbag materials. Place the elastic material layer 3 between the two pieces of single-sided airbag materials. Heat the elastic material layer 3 to 180 C. and then press the elastic material layer and the two pieces of airbag materials by a pressure of 10 kg/cm.sup.2, and naturally cool them to room temperature for formation. Further, the flat thermoplastic material is a flat material consisting of thermoplastic.

[0036] Wherein, the heating rate of heating the flat thermoplastic material to 120 C. as described in Step (1) is 5 C./min.

[0037] Wherein, the cooling rate as described in Step (1) is 35 C./min.

[0038] Wherein, the heating rate of heating the elastic material layer to 180 C. as described in Step (2) is 35 C./min.

Embodiment 2

[0039] Embodiment 2 is substantially the same as Embodiment 1 except that the upper airbag 1 and the lower airbag 2 of Embodiment are staggered.

Embodiment 3

[0040] Embodiment 3 is substantially the same as Embodiment 1 except that the elastic material layer 3 of Embodiment 3 is a TPU layer with a thickness of 0.5 mm.

Embodiment 4

[0041] Embodiment 4 is substantially the same as Embodiment 1 except that the elastic material layer 3 of Embodiment 4 is a TPU layer with a thickness of 1.0 mm.

[0042] Embodiment 5

[0043] Embodiment 5 is substantially the same as Embodiment 1 except that the wide of the soft edge connecting portion 4 and the width of the upper airbag 1 and the lower airbag 2 of Embodiment 5 are in the ratio of 1:1.

Embodiment 6

[0044] Embodiment 6 is substantially the same as Embodiment 1 except that the width of the soft edge connecting portion 4 and the width of the upper airbag 1 and the lower airbag 2 of Embodiment 6 are in the ratio of 1:3.

Embodiment 7

[0045] Embodiment 7 is substantially the same as Embodiment 1 except that the preparation method of the inflation-free double-sided airbag of Embodiment & comprises the following two steps. Step (1) Unilateral Molding: Prepare a flat thermoplastic material. Heat the flat thermoplastic material to 180 C. and then press the flat thermoplastic material by a pressure of 15 kg/cm.sup.2 to form separated grooves. Cool the flat thermoplastic material to room temperature to obtain a single-sided airbag material. (2) Sealing: Prepare two pieces of the molded single-sided airbag materials. Place the elastic material layer 3 between the two pieces of single-sided airbag materials. Heat the elastic material layer 3 to 180 C. and then press the elastic material layer and the two pieces of airbag materials by a pressure of 15 kg/cm.sup.2, and naturally cool them to room temperature for formation. Further, the flat thermoplastic material is a flat material consisting of thermoplastic.

[0046] Wherein, the heating rate of heating the flat thermoplastic material to 180 C. as described in Step (1) is 8 C./min.

[0047] Wherein, the cooling rate as described in Step (1) is 35 C./min.

[0048] Wherein, the heating rate of heating the elastic material layer to 180 C. as described in Step (2) is 30 C./min.

Embodiment 8

[0049] Embodiment 8 is substantially the same as Embodiment 1 except that the preparation method of the inflation-free double-sided airbag of Embodiment 8 comprises the following steps: Step (1) Unilateral Molding: Prepare a flat thermoplastic material. Heat the flat thermoplastic material to 150 C. and then press the flat thermoplastic material by a pressure of 10 kg/cm.sup.2 to form separated grooves. Cool the flat thermoplastic material to room temperature to obtain a single-sided airbag material. (2) Sealing: Prepare two pieces of the molded single-sided airbag materials. Place the elastic material layer 3 between the two pieces of single-sided airbag materials. Heat the elastic material layer 3 to 180 C. and then press the elastic material layer and the two pieces of airbag materials by a pressure of 10 kg/cm.sup.2, and naturally cool them to room temperature for formation. Further, the flat thermoplastic material is a flat material consisting of thermoplastic.

[0050] Wherein, the heating rate of heating the flat thermoplastic material to 180 C. as described in Step (1) is 15 C./min.

[0051] Wherein, the cooling rate as described in Step (1) is 35 C./min.

[0052] Wherein, the heating rate of heating the elastic material layer to 180 C. as described in Step (2) is 35 C./min.

[0053] While the invention has been described by means of specific embodiments, numerous modifications and variations could be made thereto by those skilled in the art without departing from the scope and spirit of the invention set forth in the claims.