TWI543857B - Velcro for foaming and foams containing this adhesive tape - Google Patents

Description

Velcro tape for foam and foam containing the same

The present invention relates to a fastening tape for a foam which can be bent laterally at will, and a foam comprising the same, such as a foam cushion.

Hook-and-loop detachable fasteners, such as the Velcro tape, are widely used in various fields because of their easy bonding/separation characteristics. The objects are detachably bonded to each other. Conventional fastening tape structures for use on automotive or furniture seat cushions come in many different forms.

A film-like fastening tape assembly 10 for a car seat cushion is disclosed in U.S. Patent No. 5,422,156, the disclosure of which is incorporated herein. As shown in FIG. 1 , the fastening tape assembly 10 includes a plastic bottom layer 11 , a plurality of hook-shaped protrusions 18 formed on the front surface of the plastic bottom layer 11 , and four strips formed on the back surface of the plastic bottom layer 11 for foaming. The body engaging anchor 14 and a protective film layer 20 covering the hook protrusions 18 and the plastic bottom layer 10 are used to prevent the foaming substance from penetrating into the hooks during the foaming process of the seat cushion Between the protrusions 18. In addition, in order to fix the fastening tape assembly 10 in the foaming process in the foaming process, a magnetic material The material layer 22 is disposed inside the protective film layer 20. The disclosure of this patent is hereby incorporated by reference herein in its entirety in its entirety herein in its entirety herein

In addition, in the U.S. Patent No. 8,322,002, the entire disclosure of which is incorporated herein by reference in its entirety in its entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire portion As shown in Figures 2a and 2b, the adhesive tape structure does not cover the protective layer on the hook body 23' of the fastening tape to prevent the foaming substance from penetrating into the hook body during the foaming process of the seat cushion. Between 23'. Conversely, the fastening tape structure encloses the hook body 23' by forming a protective side wall 13' on both sides of the fastening tape, thereby preventing the foaming substance from penetrating during the foaming process of the seat cushion. The effect between the hooks 23'. In addition, in the retaining wall type fastener tape structure, the magnetic material 15' for positioning the adhesive tape in the foaming mold is disposed at a distance from the top end of the fastening tape. On the bottom layer of the belt.

These conventional adhesive tape structures applied to foams such as automobile foam cushions or furniture foam cushions can achieve the effect of bonding the seat covers to the seat cushions, but they also have some disadvantages and effects. limits.

For example, since the above-mentioned conventional fastening tape structure is a single-piece elongated structure, the lateral bending capability is relatively limited. Therefore, the conventional fastening tape structure can only be used for linear bonding. On the groove of the groove, the curved or curved adhesive groove can not be used directly as desired, and must be applied to the seat cushion with curved adhesive groove through additional processing. For example, it is necessary to develop a die having the same curvature as the bending curvature of the adhesive groove on the seat cushion to cut the fastening tape structure into a fastening tape structure having a specific curvature. However, this method is also not economically effective. beneficial. Therefore, the conventional fastening tape structure has its limitations in its application.

In addition, since the fastening tape is placed in such a manner that the side of the hook member faces the positioning magnet in the foaming mold in the foaming process, the conventional wall-mounted fastening tape sets the magnetic material. At the bottom layer of the adhesive tape which is at a distance from the top end of the fastening tape, the magnetic material on the adhesive tape is too large from the positioning magnet on the mold and the magnetic attraction is insufficient, thereby causing the adhesive tape to be positioned in the foaming mold. Offset, and the problem of defective products.

Accordingly, there is a strong need in the seat cushion manufacturing industry for a retaining wall fastener tape structure that can be bent laterally to accommodate any curved arc of the seat cushion and that can be positioned in the foaming mold.

In view of the above disadvantages of the conventional device and the limitations of the application, it is an object of the present invention to provide a fastening tape for a foam which can be reliably combined with the positioning magnet of the foaming mold and can be bent laterally arbitrarily. . Another object of the present invention is to provide a foam comprising the fastening tape of the present invention.

According to an embodiment of the present invention, a fastening tape for a foam is provided, comprising: a plurality of hooking portions that are longitudinally spaced apart and connected to each other by a joint portion, wherein each hook The combined portion has: a bottom layer; a plurality of hook members formed on the upper surface of the bottom layer; a retaining wall formed on the upper surface of the bottom layer and enclosing the plurality of hook members, the wall including a recess formed at the top end; two side wing portions respectively from the double layer guard The lateral side of the wall extends outwardly toward the bottom of the side and is formed with a configuration for engaging the foam; and a magnetic material is disposed in the recess at the top end of the retaining wall.

According to another embodiment of the present invention, a fastening tape for a foam is provided, comprising: a plurality of hooking portions that are longitudinally spaced apart and connected to each other by a joint, each of which The hooking portion has: a bottom layer; a plurality of hook members formed on the upper surface of the bottom layer; a double-layer retaining wall formed on the upper surface of the bottom layer and the plurality of hook shapes The double-layered retaining wall includes a first retaining wall, a second retaining wall spaced apart from the first retaining wall, and a first retaining wall and the second layer a lateral joint between the retaining walls and the lateral joint is formed near the top end of the first retaining wall and the second retaining wall for the first retaining wall and the second retaining wall The top end portion forms a groove; the side wing portions respectively extend outward from the lateral side of the double-layered retaining wall to the bottom of the side edge and are formed with a configuration for engaging with the foam; and a magnetic material It is placed in the recess of the double-walled retaining wall.

And a plurality of hook members having a height and the double layer retaining wall having one and the The height of the hooks is approximately equal in height. The longitudinally long ends of each of the wing portions are formed with a chamfered portion which is inclined from the inside to the outside.

Further, according to another aspect of the present invention, a foam is provided comprising: a foam; and at least one fastener tape for a foam as described in the above embodiment.

Other features and advantages of the present invention will become apparent from the following detailed description of the appended claims.

10‧‧‧Buckle belt assembly

11‧‧‧Plastic bottom layer

14‧‧‧ Anchorage

18‧‧‧Hooks

20‧‧‧Protective film

22‧‧‧ Magnetic material layer

10'‧‧‧ Velcro tape structure

13’‧‧‧Protective side wall

15'‧‧‧ Magnetic Materials

23’‧‧‧ hook body

100‧‧‧Buckle tape

101‧‧‧Connected section

102‧‧‧ hooking part

103‧‧‧ bottom layer

104‧‧‧Hooks

105‧‧‧Flanking section

106‧‧‧Wall

107‧‧‧ recess

108‧‧‧ Magnetic materials

109‧‧‧Bite configuration

102’‧‧‧ hooking part

60‧‧‧Double-walled retaining wall

61‧‧‧First wall layer

62‧‧‧Second retaining wall

63‧‧‧Link section

64‧‧‧ Groove

90‧‧‧ seat cushion

80‧‧‧Mold

81‧‧‧ Positioning magnet

1 is a schematic cross-sectional view of a conventional fastening strip assembly for a foamed seat cushion.

2a and 2b are respectively a perspective view and a cross-sectional view of another conventional fastening tape assembly for a foaming seat cushion.

3 is a perspective view of a fastening tape in accordance with an embodiment of the present invention.

Fig. 4 is an enlarged perspective view showing a hooking portion of the fastening tape shown in Fig. 3.

Figure 5 is a schematic cross-sectional view of the hooking portion of Figure 4.

Figure 6 is a cross-sectional view showing a hooking portion of a fastening tape in accordance with another embodiment of the present invention.

Fig. 7 is a cross-sectional view showing a hooking portion of a fastening tape according to still another embodiment of the present invention.

Figure 8a is a schematic cross-sectional view of a mold for making a foamed seat cushion, and Figure 8b is a partially enlarged cross-sectional view.

Figure 9a is a front elevational view of a seat cushion including the fastening tape of the present invention, And Figure 9b is a partially enlarged front view.

The adhesive tape for a foamed seat cushion of the present invention will now be described in detail with reference to the accompanying drawings. 3 is a perspective view showing a fastening tape 100 in accordance with a preferred embodiment of the present invention. As shown, the fastening tape 100 of the present invention comprises a plurality of hooking portions 102 which are longitudinally spaced apart and connected to each other by a connecting portion 101.

4 is a partial cross-sectional perspective view of the hooking portion 102 of the fastening tape 100 of FIG. FIG. 5 is a schematic cross-sectional view of the hooking portion 102 of FIG. In the embodiment shown in the figures, the hook portion 102 has a generally rectangular shape. The shape of the hook portion 102 of the present invention is not limited to a rectangle, and other suitable shapes may be used, such as a square, a circle or an ellipse. Each of the hook portions 102 has a bottom layer 103, a plurality of hook members 104 formed on the upper surface of the bottom layer 103, and a retaining wall 106 formed on the upper surface of the bottom layer, which has a retaining wall formed thereon. A top recess 107 and a magnetic material 108 are disposed within the recess 107 of the retaining wall 106. Thus, the magnetic material 108 can be disposed within the retaining wall 106 proximate the tip end. As shown, the retaining wall 106 encloses the plurality of hook members 104 and has a height substantially equal to the hook members 104 for providing the hook members 104 during the foaming process of the seat cushions. Sufficient protection prevents the foaming material from penetrating between the hook members 104.

The hooking portion 102 further has two side wing portions 105 respectively extending outward from the bottom of the lateral side of the double-layered retaining wall 106 and formed thereon There is a bite configuration 109 for allowing the foaming substance to enter the bite configuration 109 during the foaming process of the seat cushion to produce a rivet-like fixing effect, and to increase the additional mechanical mechanism between the fastening tape 100 and the seat cushion. The combination of strength allows the fastening strip 100 to have a stronger bond with the seat cushion. Further, a chamfered portion which is inclined from the inside to the outside is formed at both longitudinal ends of each of the side flap portions 105 to improve the ability of the entire fastening tape 100 to be bent.

Fig. 6 is a schematic cross-sectional view showing a hooking portion 102' of a fastening tape according to another embodiment of the present invention. In this embodiment, the retaining wall 106 is replaced by a double layer retaining wall 60. The double-layered retaining wall 60 includes a first retaining wall 61, a second retaining wall 62 spaced apart from the first retaining wall 61, and a first retaining wall 61 and the second retaining layer. A lateral joint 63 between the walls 62. Preferably, the lateral joint portion 63 is disposed adjacent to the top end of the double-walled retaining wall 60 to form a recess structure 64 for receiving the magnetic material 108. Alternatively, in a variation of the two-layer retaining wall, the two-layer retaining wall 60 may not include the lateral joint portion 63 and the magnetic material 108 is disposed on the first layer retaining wall 61 and the second layer. In the space between the retaining walls 62, as shown in FIG.

Next, another aspect of the present invention, that is, a seat cushion 90 including the fastening tape 100 of the present invention will be described with reference to Figs. 8a, 8b and Figs. 9a, 9b. Figure 8a is a schematic cross-sectional view of a mold 80 for making a foamed seat cushion, and Figure 8b is a partially enlarged cross-sectional view. As shown in Figs. 8a and 8b, a positioning magnet 81 is disposed at a position where a fastening tape is to be provided in the mold 80, and the fastening tape 100 of the present invention is placed in the mold in such a manner that the hook member faces the positioning magnet 81. 80 is located at the position of the positioning magnet 81, and by the fastening tape 100 The magnetic attraction between the magnetic material within the retaining wall structure and the positioning magnet 81 maintains the fastening strip 100 in position during foam molding. After the foam molding process, the seat cushion 90 having the fastening tape component of the present invention as shown in Figs. 9a and 9b can be completed. Although, in this embodiment, the seat cushion 90 is taken as an example to illustrate that the fastening tape 100 of the present invention can be applied to a foaming seat cushion, the inventive fastening tape 100 can be applied to any foaming mold. Made on the foam made by the method.

The adhesive tape for the foam of the present invention has a unique retaining wall structure, and the magnetic material is disposed at the top of the retaining wall structure closest to the mold positioning magnet, so that the adhesive tape of the present invention can be positioned in the mold. The magnet generates the largest magnetic attraction force, and the adhesive tape is fixed at the positioning position in the mold, so as to avoid the problem that the adhesive tape is deviated from the positioning due to insufficient magnetic attraction during the foam molding process.

In addition, since the fastening tape for the foam of the present invention has unique lateral bending property, the fastening tape of the present invention can be applied not only to the foam having the linear adhesive groove, but also The foam strip of the adhesive groove of different bending curvatures and different bending directions can also be directly used without any additional processing or cutting treatment. Therefore, the fastener tape member for foam on the present invention is an industrially useful invention.

Although the present invention has been described above with reference to the preferred embodiments shown in the drawings, this does not mean that the invention is limited only to the above description and the accompanying drawings. The structure shown. In fact, the present invention may have the principles and spirit taught by the above disclosure. Various modifications and variations. All of these and other possible variations are within the true scope of the invention as defined by the scope of the following claims.

100‧‧‧Buckle tape

101‧‧‧Connected section

102‧‧‧ hooking part

Claims (4)

A fastening tape for a foam, comprising: a plurality of hooking portions which are longitudinally spaced apart and connected to each other by a joint portion, wherein each hooking portion has: a bottom layer; a plurality of hooks a shape member formed on an upper surface of the bottom layer; a double-layered retaining wall formed on the upper surface of the bottom layer and enclosing the plurality of hook members, the double-layer retaining wall a first layer of retaining wall, a second retaining wall spaced apart from the first retaining wall, and a transverse joint formed between the first retaining wall and the second retaining wall and the transverse direction a joint portion is formed near a top end portion of the first layer retaining wall and the second layer retaining wall to form a groove with the top portion of the first layer retaining wall and the second layer retaining wall; And extending from the lateral side of the double-layered retaining wall to the outer side of the side, respectively, and having a configuration for engaging with the foam; and a magnetic material disposed on the double-walled retaining wall Inside the groove. A fastening tape for a foam according to claim 1, wherein the plurality of hook members have a height and the double-layered retaining wall has a height substantially equal to a height of the hook members. . The adhesive tape for foams of claim 1, wherein each of the side wing portions is formed with a chamfered portion which is inclined from the inside to the outside. A foam comprising: And a foaming tape for foaming according to any one of the preceding claims 1 to 3, which is bonded to the foam.