FASTENERS BONDED TO SUBSTRATE MATERIALS WITHOUT PUNCTURING THE MATERIALS
Systems and methods are disclosed for fasteners bonded to substrate materials without puncturing the materials. An example fastening system includes a male fastener component and a female fastener. The example male fastener component includes a base plate bonded to a first substrate material without puncturing the first substrate material, and a post integrally formed with the base plate, the base plate and the post formed of a polyurethane material. The example female fastener component includes a housing defining a cavity configured to engage with the post of the male fastener component. The housing is made of the polyurethane material and bonded to a second substrate material without puncturing the second substrate material.
This application claims benefit of U.S. Provisional Application No. 62/355,706, filed Jun. 28, 2016, which is hereby incorporated by reference in its entirety.
TECHNICAL FIELDThis disclosure is directed to fasteners for use with clothing, bags and other accessories using a reusable molded closure design in the form of a post or other shape that can be directly injected, cast, bonded or molded onto a surface of the item to be fastened.
BACKGROUNDTraditionally, there are two different types of snaps used to join fabric or other loose materials: either a post-style or a prong-style. As shown in
Snaps are typically measured in ligne units which was used in France prior to adoption of the metric system (1 mm=0.4433 ligne). It is still used today to measure size of watch movements, buttons and ribbons. Thus, with snaps you are limited to ligne sizes and circular snaps. Due to sizing and shape constraints, typical snaps may not fully attach two materials or you may need to use multiple snaps which creates gaps between snaps or multiple snaps which creates more work for a user to attach. Snaps can also be ordered based on various force specs but this becomes more challenging as the snap becomes smaller in size and if a specific force is needed, custom tooling and larger production runs are required.
Another traditional fastener option used with loose fabrics and particularly clothing are buttons. However, buttons suffer from some of the same issues as snaps discussed above. They require a hole to be placed through one component of the material such that the button can be pushed through it. Buttons are sewn on, and the sewing often comes undone. Indeed, it is common to provide additional buttons with an item of clothing because this is such a common failure mode. Moreover, both buttons and snaps necessarily become a visible component of the object being fastened because they protrude through the surface. This may detract from the appearance of decorative fabrics. It would be beneficial to have a fastening system that does not protrude through the fabric material to be joined—both to protect the material integrity and to keep the fasteners out of sight.
Yet another prior art fastening system is velcro. Typically velcro is sewn onto a fabric, once again requiring perforation of the fabric. Alternatively, it is adhered with an adhesive, which may give way and leave a sticky residue. Moreover, velcro gets dirty over time and loses its strength, and also produces an audible sound when being pulled apart that has become associated with cheap or inexpensive designs.
Traditionally, snaps are rigid parts made of metal or injected-molded plastic. As disclosed below, the adjustable durometer closure (a) facilitates closures with a variety of durometers that provide a softer based closure that improves comfort, ease-of-use, and (b) facilitates seamless integration on a much wider array of fabrics onto which the closure can be directly injected, casted, bonded or molded. For example, instead of using capped post penetrating the material with a corresponding stud or socket, the adjustable durometer closure may be bonded on the material (such as on the inside surface where it is not visible during wear) with no penetration.
SUMMARYThe appended claims define this application. The present disclosure summarizes aspects of the embodiments and should not be used to limit the claims. Other implementations are contemplated in accordance with the techniques described herein, as will be apparent to one having ordinary skill in the art upon examination of the following drawings and detailed description, and these implementations are intended to be within the scope of this application
Example embodiments are disclosed for fasteners bonded to substrate materials without puncturing the materials. An example fastening system includes a male fastener component and a female fastener. The example male fastener component includes a base plate bonded to a first substrate material without puncturing the first substrate material, and a post integrally formed with the base plate, the base plate and the post formed of a polyurethane material. The example female fastener component includes a housing defining a cavity configured to engage with the post of the male fastener component. The housing is made of the polyurethane material and bonded to a second substrate material without puncturing the second substrate material.
An example fastening system a first fastener component and a second fastener component. The first fastener component is formed onto, via molding, to a first surface of a flexible material without puncturing the flexible material. Additionally, the first fastener component includes a plurality of posts. The second fastener component is formed onto, via molding, to a second surface of the flexible material without puncturing the flexible material. The second fastener component is configured to mate with the first fastener.
An method of fastening two surfaces includes inserting a post of a first fastening component into a cavity defined by a second fastening component. The first fastening component is molded onto a first surface without puncturing the first surface and the second fastening component molded onto a second surface without puncturing the second surface. The example method also includes applying force to the first fastening component and the second fastening component.
For a better understanding of the invention, reference may be made to embodiments shown in the following drawings. The components in the drawings are not necessarily to scale and related elements may be omitted, or in some instances proportions may have been exaggerated, so as to emphasize and clearly illustrate the novel features described herein. In addition, system components can be variously arranged, as known in the art. Further, in the drawings, like reference numerals designate corresponding parts throughout the several views.
As describe below, a mating pair of posts and/or slots (sometimes referred to as “fastener components”) are bonded directly to a first surface of a flexible or semi-rigid material (sometime referred to herein as “fabric” or a “substrate material”) using a molding technique such as compression molding. While the term “fabric” is used, one of ordinary skill in the art will recognize that the invention disclosed herein could be used to join various materials together across numerous applications. For example, the present invention provides a stronger, more versatile, and more attractive alternative to a velcro bond, and could be used across essentially the same broad functions for which velcro is used (e.g., not just clothing, but numerous applications where two surfaces are to be temporarily joined.)
To form the bond between the fastener components and the fabric, a polyurethane blend is spread on a tool and closed in a vacuum to eliminate air bubbles. The polyurethane blend is placed in an oven to be allowed to cure slightly. The fabric is placed over the tools and placed in a heat press under pressure to finalize curing and bonding the fastener components to the fabric. In such a manner, the posts and/or slots are affixed to the fabric without puncturing the fabric. In some examples, the posts and/or slots are bonded directly onto the fabric. Alternatively, in some examples, the post and/or slots are integrally formed with a base plate of the same material that is bonded directly onto the fabric without puncturing the fabric. In some such examples, the base plate is thin (e.g., less than a millimeter) and flexible to flex with the fabric. In some examples, the base plate of the posts is flexible and the base plate of the slots is rigid. The posts are configured to mate with the corresponding slots. In some examples, the posts and slots are configured to press fit together. To press fit together, the posts are forced under pressure into a slightly smaller diameter slot and held together by friction. In some examples, the posts and slots are configured to snap fit together. To snap fit together, the posts include a flared lip and the slots are resilient and flexibly extend to receive and contract around the flared lip. In some examples, an array of posts is configured to mate with a corresponding array of posts via an interlocking fit. Additionally, the posts may be configured to mate with a non-flexible slot within an item. For example, the post may be configured to mate with a universal serial bus (USB) port on a cellular phone or speaker to aid retention thereto.
Additionally, in some examples, the cross-section of the cap 302 and the body 304 is different from the cross-section of the flange 306. For example, the cap 302 and the body 206 may have a hexagonal cross-section and the flange 306 may have a circular cross-section.
As can be seen from these examples, various geometries are made possible by the new method of attaching posts to textiles that does not require the textile to be pierced. Additionally, this method does not require the textile to be reinforced or backed. Additionally, the posts of the illustrated examples facilitate an interface between soft goods (e.g., a helmet liner) and hard goods (e.g., a helmet). In some examples, the textile may be worn next to the skin without ameliorating the contact on the skin of the back of the post-style snap and the prong-style snap.
Claims
1. A fastening system comprising:
- a male fastener component comprising: a base plate bonded to a first substrate material without puncturing the first substrate material; and a post integrally formed with the base plate, the base plate and the post formed of a polyurethane material; and
- a female fastener component comprising a housing defining a cavity configured to engage with the post of the male fastener component, the housing made of the polyurethane material and bonded to a second substrate material without puncturing the second substrate material.
2. The fastening system of claim 1, wherein the post of the male fastener component is configured to press fit into the cavity of the housing of the female fastener component.
3. The fastening system of claim 1, wherein the post of the male fastener component comprises a flared lip and the base of the female fastener component is resilient and flexibly expands to receive and contract around the flared lip.
4. The fastening system of claim 3, where the post of the male fastener component comprises a resilient flared lip that flexibly deforms to enter the cavity of female fastening component to snap fit into the cavity of female fastening component.
5. The fastening system of claim 1, wherein at least one of the male fastening component and the female fastening component is cast onto the respective substrate material, thereby forming a permanent bond thereto.
6. The fastening system of claim 6, wherein the at least one of the male fastening component and the female fastening component is cast onto the respective substrate material via compression molding.
7. The fastening system of claim 1, wherein the base of the post is integrally formed of a first polyurethane and a tip of the post is formed from a second different polyurethane that has a different hardness than the first polyurethane.
8. The fastening system of claim 1, wherein the base plate flexible and is less than a millimeter thick.
9. The fastening system of claim 1, wherein the post has a non-geometric shape.
10. A fastening system comprising:
- a first fastener component formed onto, via molding, to a first surface of a flexible material without puncturing the flexible material, the first fastener component comprising a plurality of posts; and
- a second fastener component formed onto, via molding, to a second surface of the flexible material without puncturing the flexible material, the second fastener component configured to mate with the first fastener.
11. The fastening system of claim 10, wherein the second fastener component defines a plurality of slots configured to engage with the plurality of posts via press fitting.
12. The fastening system of claim 10, wherein the plurality of posts have flared lips.
13. The fastening system of claim 12, wherein the second fastener component defines a plurality of slots configured to engage with the plurality of posts via snap fitting.
14. The fastening system of claim 12, wherein the plurality of posts of the first fastener component are arranged in a first array, wherein the second fastener component comprises a plurality of posts arranged in a second array, and wherein the plurality of posts of the first fastener component are configured to interlock with the plurality of posts of the second fastener component.
15. The fastening system of claim 10, wherein the first fastener component comprises a base plate integrally formed with the plurality of posts, the base plate being flexible to deform in conjunction with the flexible material.
16. The fastening system of claim 12, wherein the second fastener component comprises a base plate, and wherein the plurality of cavities are defined within the base plate.
17. The fastening system of claim 12, wherein the plurality of posts have non-circular cross-sections.
18. A method of fastening two surfaces, comprising:
- aligning a post of a first fastening component with a cavity defined by a second fastening component, the first fastening component molded onto a first surface without puncturing the first surface and the second fastening component molded onto a second surface without puncturing the second surface; and
- applying force to press the post of the first fastening component into the cavity of the second fastening component.
19. The method of claim 18, wherein applying the force to the first fastening component and the second fastening component causes the second fastening component to flexibly expand to receive the post, the cavity contracting around the a flared lip of the post.
Type: Application
Filed: Jun 26, 2017
Publication Date: Dec 28, 2017
Inventors: Michael Dimitri Prstojevich (Portland, OR), Simon Andrew Quay (Portland, OR)
Application Number: 15/633,327