JPS61228816A - Finishing of tile 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 [Field of Industrial Application] The present invention relates to a method for finishing tile carpets cut into predetermined sizes from carpet originals.

[Conventional technology and problems]

As shown in Fig. 1, tile carpet is cut into a predetermined size from a raw carpet using a cutting knife, and the carpet is made by providing a backing layer 3 on the back side of a base fabric 2 with loops 1 planted on the surface. It has a structure.

By the way, when cutting tile carpet from raw carpet, the cutting position is not constant with respect to the loop on the top surface. For example, it is cut at an offset position near the root of loop 1 along line XX in Fig. 1. Sometimes.

In this case, in the case of the loop A whose cut-off end has a long length of about 1n to 5xx, when it rises, the height of the loop 1 becomes C
Since the abutment portion protrudes from the tile carpet and is conspicuous when the tile carpet is laid, the commercial value will decrease unless the distance A from the break line x-x is removed.

In addition, loop B has a short length of about 0.511 to 1.5 pieces.
, the height is lower than the height C of the loop 1, and the low part of the loop stands out as a line at the abutment part when laying, so the height from the cutting line X-X of the backing layer 3 to the root of the adjacent loop It is desirable to shorten the interval B1.

Furthermore, there is a problem that at the cut ends of both loops A and B, the twisted yarn returns and the ends become cotton-like.

In addition, dimensional accuracy is extremely important for tile carpets, and errors can cause gaps and floating during installation, and similar problems occur if expansion and contraction occurs due to changes in room temperature during installation.

This invention has been made in view of the above points, and an object of the present invention is to provide a finishing method that can produce carpet tiles with excellent dimensional accuracy without the formation of loops or fuzzing at the cutting edges. be.

[Means for solving problems]

In order to solve the above-mentioned problems, the present invention heats and cools carpet tiles cut to a predetermined size, corrects the circumferential dimensions, and processes the peripheral loops.

[Effect]

The tile carpet is heated and cooled to a predetermined size from the original carpet, and during heating, the fluff of the loops is removed and the ends of the loops are burned to shorten them.

Furthermore, while heating and cooling, the dimensions are fixed by applying pressure from above and below or from the periphery on all four sides to improve dimensional accuracy, and by repeating heating and cooling, expansion and contraction due to temperature changes during use is prevented.

〔Example〕

Embodiments of the present invention will be described below with reference to the accompanying drawings.

As shown in Figure 1, carpet tiles are made by cutting out squares or rectangles of predetermined dimensions, such as 3001 tl, 450 ryu, 500 ryu, 600 tai, etc., from the original carpet, and then heating and cooling them several times. At the same time, the dimensions are corrected by applying pressure from above and below or from the periphery.

The method for heating the tile carpet is, for example, by blowing a gas flame onto the tile carpet and causing the flame to momentarily pass through the tile carpet, or by passing it through a high-temperature heating furnace.

The tile carpet 4.4 cut out along line X-X in FIG.
The ends of the loops become loose, and since the twisted yarns have returned to form a linear tip, these ends soften, shrink, dissolve, and burn more easily and faster than other loop parts where the twisted yarns are intertwined. Therefore, the free end is burnt and shortened as shown in FIGS. 3a and 3b, and even if a rise occurs, it will stay within the height C of the loop 1.

Further, at the ends of the shortened loops, the cotton-like portions of the twisted yarn are heat-set or melted together, and the occurrence of unraveling of the twisted yarn is eliminated.

Note that depending on the material of the fiber material, some of the loop ends may become charred, and in this case, they may be removed with a brush or the like or with a dust collector.

Methods for rapidly cooling tile carpet include submerging or spraying the tile carpet with cold water, passing it through a cooling room or cold room, and pressurizing it with water-cooled rolls.

The heating and cooling described in L may be repeated several times alternately as necessary (the heating temperature from the front side of the loop 1 and the bottom side of the backing layer 3 may be changed).

By repeating heating and rapid cooling several times in this way, the backing layer 3 expands and contracts in short cycles, and as a result, it loses its elasticity and dimensional changes due to temperature changes during use are eliminated.

In addition, since the backing layer 3 in the tile carpet is formed of a heat-softening resin such as asphalt or PVC, even if there is a large difference in heat resistance temperature between the front and back materials, it is possible to set the shape of the loop 1 by changing the heating temperature on the front and back sides. Reliable removal of loose hair.

Along with the heating and cooling treatment, for tile carpet,
Pressure is applied from the top and bottom of the four sides or from the four peripheries to correct the dimensions.

The backing layer 3 is expanded by the upper and lower pressures, and the planar dimensions are made constant by molding members that mold the four peripheries of the backing layer 3.

As shown in FIG. 3, the forming of the four surrounding areas is such that the lower part of the backing layer 3 is an inclined surface 3a facing inward, and when laying the backing layer 3.
It is desirable that the tops of the backing layer 3 abut against each other reliably and that there are no gaps. Also, when the four peripheral edges are pressurized inward, the peripheral edges of the backing layer 3 are compressed and contracted, so that the loop 1
Even if the ends are short, the density will be high and the abutment will not be noticeable during installation.

The finishing method of the present invention has the above-described configuration, and heating, cooling, and pressure molding are performed on a tile carpet cut into a predetermined size from an original carpet.

First, the fluff on the entire surface of the loop 1 is removed by heating, and the cut free end of the loop is shortened, eliminating the occurrence of rises higher than the height C of the loop 1.

Further heating heat sets the entire loop and causes it to rise to a predetermined height.

Next, in the cooling process, the tile carpet is rapidly cooled, and the elasticity of the backing layer 3 is improved by heating and cooling.

Furthermore, dimensional errors in the tile carpet are corrected by applying pressure from above and below or from the periphery.

〔effect〕

As described above, according to the present invention, since the configuration is as described above, there are the following effects.

(I) Since the tile carpet is heated and cooled after being cut to a predetermined size, the elasticity of the tile carpet backing layer can be improved, and there is no dimensional change during installation, and the cut edges can be kept at room temperature. Even if it becomes thinner and elongated due to an increase in the temperature, it becomes softer and can be absorbed near the abutting edge.

(ml) Heating the carpet tile can remove loop fluff and heat set the loop shape.

(4) By heating the carpet tile, the length of the cut loop ends can be shortened and the ends can be melted, so that the cut ends of the loops do not rise above the loop height or become fluffy. .

(5) Since the circumferential dimensions are corrected in addition to heating and cooling, the two-dimensional dimensional accuracy is greatly improved, and by increasing the loop density around the cut, the abutment part becomes less noticeable during installation. , we can provide carpet tiles with high commercial value.

[Brief explanation of the drawing]

FIG. 1 is a vertical cross-sectional view showing the carpet tile before cutting, FIG. 2 is a vertical cross-sectional view showing the same when it is cut, and FIG. 3 is a vertical cross-sectional view showing the same after finishing. 1...Loop, 2...Base fabric, 3...Backing layer, 4...
・・Carpet tiles

Claims (1)

[Claims] A method for finishing a carpet tile, which comprises heating and cooling a carpet tile cut to a predetermined size, correcting the peripheral dimensions and processing the peripheral loops.