JPS5936778A - Backing of carpet - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method of packing a carpet with

There are two types of carpets: tufted carpets, which have piles of cotton, wool, acrylic, polyester, etc. planted on a base fabric woven from jute or polypropylene, and raschel knitted carpets, which are knitted. For both knitted carpets, rubber latex, asphalt, etc. is bonded to the back side of the base fabric that has the pile part in order to prevent the pile part from coming off, to eliminate fraying at the periphery, and to stabilize the placement. This method involves applying a liquid substance that has properties and drying it. However, with this conventional backing method, it is not easy to uniformly apply a liquid substance to the entire back surface of the base fabric, and it takes a long time, and the equipment required is large-scale, and the drying process takes time. The problem with the process is that the finished product carpet loses its breathability because the liquid substance enters the ventilation holes and hardens, and if it is left on the floor for a long time, moisture will enter the back of the carpet, causing mold and mildew. There were product drawbacks in terms of health and hygiene, such as erectile dysfunction. Furthermore, during cleaning, there were other problems such as the liquid substance melting and the chimiil coming off the base fabric.

In view of the above-mentioned drawbacks, the present invention aims to provide a method for performing a knocking treatment in a short time without impairing the air permeability of a carpet.The present invention will be described in detail below with reference to the drawings.

The drawings show one embodiment of the present invention, and FIG. 1 is an enlarged perspective view of a part of a carpet that has been subjected to backing treatment according to the method of the present invention, and FIG. 2 is a sectional view of the same part. . In the figure, 1 is the carpet main body, which includes a base fabric 2 woven with jute or polypropylene fibers, etc. as wefts 2as 2bz warps 2c, and a chimney 3 made of wool or acrylic fibers is tufted from the back side of the base fabric 2 to the front side. It is flocked by a machine (not shown) and has many ventilation holes 4 penetrating from the front side to the back side. Reference numeral 5 denotes a backing f formed by subjecting the back side of the base fabric 2 to a backing process using a method described later, and having a through hole 6 at a position corresponding to the ventilation hole 4. The picking process according to the method of the present invention will be explained with reference to FIG.

As shown in FIG. 3, the carpet body 1 described above is spread out so that its back surface 11Ill is facing up, and heat is applied to the entire back surface.
b A Qli-based polymer film, such as a high-density polyethylene film 7, is placed. Next, as shown in FIG. 4, hot air having a temperature equal to or higher than the melting point of the film 7 is uniformly blown onto the high-density polyethylene film 7 from a nozzle 8 connected to a hot air supply source (not shown). At this time, the nozzle 8 is moved back and forth and left and right on the film 7, or the carpet body 1' is moved back and forth and left and right with the film 7 placed thereon to make the hot air uniform. Note that a plurality of nozzles 8 may be arranged in a plurality of stages, and the hot air may be jetted all at once from these nozzles 8 to achieve uniformity. By uniformly blowing hot air onto the film 7 in this way, the film 7 melts and a part of it is blown to the contact area between the base fabric 2 and the chimney 3 (this part protrudes throughout), and the gap between the parts is blown. Through-holes 6 are formed at the corresponding locations where the hot air penetrates deeply and passes through the ventilation holes 4. When the hot air supply from the nozzle 8 is cut off after the hot-air treatment is performed in this way, the fifth As shown in the figure, a backing layer 5 is formed that adheres the base fabric 2 and the nomiil 3 to the contact area with the film resin and has through holes 6 at positions 9<1s corresponding to the ventilation holes 4. be.

Therefore, according to the above-described banking method, the base fabric 2 and the pile 3 can be bonded together in a short time, and the bottom through holes 6 can be formed at the same time, so that the air permeability of the carpet body 1 is not impaired.

Furthermore, since convex portions of the blown molten film are formed on the back surface +1lfl of the base fabric 2 on which the Nomiil 3 is flocked, the frictional resistance with the floor surface is increased, and the effect of stabilizing the installation property is also produced.

In the non-example, a high-density polyethylene film 7 was used as the heat-melting bacterial molecule film, but this is because the base fabric 2 and the nomiil 3 have a melting point within the crystallinity range (1) without thermal alteration.
However, any film can be selected as appropriate as long as it has adhesive properties with the base fabric 2 and the pile 3. In addition, although a tufted carpet with a woven base fabric 2 was used, the base fabric 2 having a weave 3, such as a carpet made by a knitting method, was
li 1. The uninvented method can be applied as long as lJ4 has a ventilation hole lt.

As explained above, according to the invention, the underside of the carpet-free base fabric, which is made of a knitted or woven base fabric and a pile knitted or flocked to the base fabric, is coated with a heat-melting material such as high-density polyethylene. By stacking molecular thin films and blowing hot air at a temperature higher than the melting point of the thin film uniformly over the thin film, the thin film melted by the hot air and the base fabric are fixed, and at the same time, the pile and the knitted fabric or base fabric are bonded together. The ventilation holes between the woven fabrics can be directly raised with hot air [3rU1 can remain, so the solidity between the base fabric and the pile is good, and it is also breathable, making it hygienic and stabilizing the placement. There is an advantage that the carpet can be provided in a short processing time of 11 days.

[Brief explanation of drawings]

The drawings show one embodiment of the present invention, and FIG. 1 is an enlarged perspective view showing a part of a carpet that has been subjected to backing treatment by the uninvented method, FIG. 2 is a sectional view thereof, and FIGS. 3 to 5 1 is an explanatory diagram of each step of the non-inventive method. DESCRIPTION OF SYMBOLS 1...Carpet, 2...Base fabric, 3...Sleeve, 4...Vent hole, 5...Backing layer, 6...
Y [Through hole, 7...Thermofusible polymer thin film, 8...For nozzle patent Applicant: Saami Co., Ltd. Patent attorney Yoshi Yoshi Ir7 Takashi Figure 3; Z4 Figure 5

Claims (1)

[Claims] A thin film of a heat-melting polymer such as high-density polyethylene is layered on the back side of the base fabric of the carpet body, which is composed of a knitted or woven base fabric and a nomiil knitted or flocked to the base fabric,
A carpet backing method comprising uniformly blowing hot air having a temperature higher than the melting point of the thin film over the thin film.