JPS61290042A - Reinforced corrugated sheet and manufacture thereof - 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 the Invention This invention relates to a reinforced corrugated sheet for use in packaging cushioning, filters and the like, and to a method for making the same.

Conventional technology A laminate in which a large number of parallel small through holes are laminated on both sides of corrugated paper to form a modified laminate is widely used in folding cartons as a double-sided corrugated board. Bonded so-called single-sided cardboard is also used for packaging products or for cushioning protection when partitioning. On the other hand, in filters, as shown in Figure 1 of JP-A No. 59-4412, a so-called high-performance air filter element is used in which the filter paper is fully bent and a spacer is inserted into the bending groove to maintain the shape of the filter paper. H1! iPA (HLghEff
iciency Particulate Air
Filter Element) is used.

Problems to be Solved by the Invention (a) Construction of the above-mentioned Minerai corrugated board uses a liner to maintain its strength and shape retention, but corrugated paper alone without a liner causes its corrugation to be distorted due to compression or nubs that are pulled in the direction of wave propagation. It collapses extremely easily, becoming flat and unable to serve as a cushioning protection. In addition, the spacer used in the above-mentioned high-performance air filter element does not affect the filter element's filtering performance in any way, but if the spacer is completely removed, the adjacent filter papers will become densely cleansed and the filtration efficiency will be significantly reduced. .

Means for Solving the HfJ Problem The present invention is a liner hdt commonly used in corrugated boards as described above, and a reinforced corrugated paper that has sufficient shape retention, twilling properties, and other required performances using only corrugated paper. provide paper,
Alternatively, it is an object of the present invention to provide a reinforced nine-corrugated filter paper that can be used without a spacer in a high-performance air filter element as described above. This is accomplished by fixing an appropriate number of threads, strings, thin metal wires, or S-width tape (hereinafter referred to as threads) 3T so that they intersect.

Embodiments will be described in detail below with reference to the drawings.

Embodiment 1 As shown in FIG. 1, an appropriate number of threads 3 are arranged on one side of the corrugated sheet 10 in the direction of travel of the 10 waves of the corrugated sheet, and the ridge line 2 of the 10 waves of the corrugated sheet This is a reinforced corrugated sheet in which the threads 3 are fixed to the corrugated sheet 1 by gluing, fusing, or other appropriate methods.

Example 2 As shown in FIG. 2, an appropriate number of threads 3,
3a in the direction of propagation of the waves on both sides of the corrugated sheet 10.
, 3a are fixed to the corrugated sheet 1 by gluing, fusing, or other appropriate methods.

Example 3 In this example, a method for manufacturing the reinforced corrugated sheet described in Example 1 will be described.

In FIG. 3, numerals 4 and 5 are a pair of molded gears having a desired Jl shape that mesh with each other, and one molded gear number has an appropriate number of cut grooves 6.5 in the circumferential direction as shown in FIG. 4. It is engraved with 6.5 fists and lives. F is the adhesive applicator and the adhesive container F (a)
! :4 Adhesive adhesive application roller holder, adhesive container '7
Adhesive 8 is poured into 1L so as to immerse a part of the adhesive application roller rough b.

As shown in FIG. 5, the adhesive application roller yb is constructed by providing a large number of disc-shaped fins lO on a cylindrical shaft 9 in accordance with the positions of the cut grooves 6, 6, 6, and so on. It is better to dip the lower part of the fin 10 into the adhesive. 11 in the figure is a presser roller.

Sheet materials such as kraft paper, plastic film, metal sheets, filter paper, furnace cloth, glass fiber paper, and animal fibers,
Prepare threads such as vegetable fibers, synthetic fibers, strings or tapes made of paper or cloth, or thin metal wires 3 (hereinafter referred to as threads), and turn the forming gear 5 and press roller 11 in the direction indicated by the arrows (B). , the sheet material 1a is guided to the meshing part of the forming gear 4.5, and the thread 3°3... is the cut of all the forming rollers? #6.6...
- When the sheet material 1a is guided, the sheet material 1a is formed into a corrugated shape, and adhesive is applied to predetermined positions of the ridge line 2 of the corrugated sheet 1 and the threads 3, 3, etc., so that one side of the corrugated sheet 1 is A reinforced corrugated sheet with 3 threads attached to the ridges 2 of the sheet is obtained.

As shown in the figure, a presser roller 12 is provided in contact with the forming gear 5 and rotated at approximately the same surface speed as the forming gear 5, and a separator 13 made of a polyester, polyethylene film, release paper, etc. is inserted into the gap between the two. If, sheet material 1
Even if a is very weak and easily breaks, it can be continuously molded without any problem.

Example 4 In this example, a method for manufacturing the reinforced corrugated sheet described in Example 2 will be described.

The device shown in Fig. 6 is used for the casing fVC adhesive application route 1 in Fig. 3.
4, adhesive applicator #14 is adhesive container 1
4a and adhesive application roller 141) Then, pour the adhesive 8 into the adhesive container 14a so as to immerse a portion of the adhesive application roller 14b.

15. 15 is a guide roller, and 16 is a presser roller.

Note that other symbols in the drawings indicate the same parts as those in FIG. 3.

Prepare a sheet material 1a and several threads 3, 3a, and rotate the forming gears 4, 5 and press rollers 11, 16 in the direction of the arrow shown in the figure to fit the sheet material 1a into the meshing portion of the forming gear 4.5. Guide thread 3.3e... is inserted into the notch grooves 6, 6... (
(See Figure 4), sheet material 11! L is formed into a corrugated shape, and the thread 31C of the corrugated sheet 1 is applied with an adhesive to obtain a corrugated sheet in which the thread 3 is adhered to the ridge line 2 on one side of the corrugated sheet l. Here, the appropriate number of threads 3
1L.

As shown in the figure, pass 3a* through the adhesive application roller 14 to impregnate #glue 8, and then pass through the presser rollers 11, 1611!5 together with the upper NM corrugated sheet 1 to adhere the threads 3 of the corrugated sheet 1. The yarn 3a is glued to the ridgeline 2a on the opposite side to the ridgeline 2a on both sides of the corrugated sheet 1 as illustrated in FIG.
A reinforced corrugated sheet is obtained to which the 2f LVC yarns 3.3a are adhered.

As shown in the figure, if a separator 13° 13a made of a polyester, polyethylene film or release paper is inserted between the forming gear 5 and the presser roller 12, or between the presser roller 11 and the presser roller 16, Reference numeral 17 in FIG. 1 indicates a guide roller, which allows the sheet material 1a to be formed without any trouble even if it is very weak and easily torn.

Further, in the above embodiments 3 and 4, when a pressure sensitive adhesive tape is used as the narrow tape 3, the 'Mj-adhesive coating device 7
is no longer necessary, and when the corrugated sheet 1 is made of P material, Fi is impregnated into the offshore material sheet to prevent the filtration performance from decreasing due to the W:adhesive 8. be able to. On the other hand, as the adhesive application roller b, as shown in FIG. 5, a type that reduces the area to be applied to the corrugated sheet 1 is conveniently used, or as the thread or narrow tape 3, one made of a heat-fusible material is used. use,
It is more effective to prevent the filtration performance from deteriorating if the adhesive 8 is not used and the thread or narrow tape 3 is heated on the surface in contact with the forming gear 5 so that it does not adhere to the ridgeline of the waves of the corrugated sheet 1. .

Effects of the Invention The reinforced corrugated sheet of the present invention obtained as described above uses filter paper for the corrugated sheet 1, filter paper when using furnace cloth,
Compared to the case where the furnace cloth is flat, the effective area for Fi filtration is wider, improving the filtration efficiency, and even when the pressure difference on both sides of the filter paper or furnace cloth is increased, threads, tapes, etc. j-3 increases the resistance to pressure differences and reduces the risk of deformation or cracking to 0%. When using the corrugated furnace material for filtration as a folded filter as illustrated in Figures 7 to 9, as described above. H1l! Compared to PA, the effective filtration area per unit volume can be further expanded, and it can be used with threads, tapes, etc.
(c) Therefore, it prevents waves from biting in and contacting the corrugated furnace materials, and together with the reinforcing effect of threads, tapes, etc., it has the effect of allowing high-pressure filtration to be performed without any trouble.

On the other hand, when a strong paper such as kraft paper is used as the sheet material, the reinforced corrugated sheet of the present invention can be used for packaging and cushioning during packaging in the same way as conventional single-sided or double-sided corrugated cardboard. If you want to increase the effect, layer the corrugated paper 1 and threads, tapes, etc. 3 in several layers as shown in Figures 10 and 11, or layer them as shown in Figures 12 and 13.
As shown in the figure, it can also be used by laminating corrugated paper 1 and threads, tapes, etc. 3 in several stages and pasting flat paper 18 on one side of the laminate or on one side and an intermediate layer.

Further, the reinforced corrugated sheet of the present invention has the effect that it can be manufactured simply, reliably, and at low cost without requiring any special techniques as described in detail in Example 3 and Detailed Example 4VC.

[Brief explanation of the drawing]

The figures show examples of the present invention, and FIGS. 1 and 2 are perspective explanatory views showing examples of the reinforced corrugated sheet of the present invention, and FIG. 4 is a perspective view showing an example of the forming gear 4 shown in FIG. 3; FIG. 5 is a partial view showing an example of the adhesive application roller 7b shown in FIG. 3. Fig. 6 is a cutaway perspective view, and Fig. 6 is a vertical sectional view of the main part showing another example of the method for manufacturing the reinforced corrugated sheet of the present invention, and Fig. 7 is a filter as an application example of the reinforced corrugated sheet of the present invention. , FIG. 8 is a partially enlarged sectional view of FIG. 1, FIG. 9 is a partially enlarged perspective view of FIG. 1, and FIGS. 10 to 13 are reinforced waveforms of the present invention. FIG. 2 is a cross-sectional view of a packaging material or a cushioning material for packaging as an application example of the sheet. In the figure, 1 is a corrugated sheet, 2 is a wave ridgeline of the corrugated sheet l, and 3 is a corrugated sheet.
．． 3a is thread, string, thin metal wire or narrow tape; 4 and 5 are forming gears; 6 is a notch provided on the forming gear number; 14 is an adhesive threading device; 8 is an adhesive; 11. L6 is the presser roller, 13 and 13a are shown in Fig. 2, Fig. 17.

Claims (4)

[Claims] (1) A reinforced corrugated sheet characterized in that a thread, string, thin metal wire, or narrow tape 3 is fixed to the ridge line 2 on one or both sides of the corrugated sheet 1 so as to intersect with the ridge line 2. (2) A reinforced corrugated sheet according to claim 1, wherein the corrugated sheet is a filter material. (3) A pair of molded gears 4 and 5 are arranged in series, and a large number of grooves 6, 6, 6... are carved in the circumferential direction on one surface of the molded gear 4, and the molded gears 4 and 5 are sheet material 1 along the direction of rotation of
At the same time, threads, strings, thin metal wires, or narrow tapes 3, 3, 3... are supplied to the cut grooves 6, 6, 6..., and the meshing portions of the pair of forming gears 4, 5 are The sheet material 1a is continuously formed into a corrugated sheet 1, and at the same time, threads, strings, thin metal wires, or narrow tapes 3, 3, 3, etc. are fixed to the ridge line 2 on one side of the corrugated sheet 1. , a method for manufacturing reinforced corrugated sheets. (4) After fixing threads, strings, thin metal wires, or narrow tapes 3, 3, 3... to the ridgeline 2 on one side of the corrugated sheet 1, strings, strings, thin metal wires, etc. are attached to the ridgeline on the other side of the corrugated sheet 1. Alternatively, the method for manufacturing a reinforced corrugated sheet according to claim 3, wherein narrow tapes 3a, 3a, 3a, . . . are fixed.