JP2000062834A - Covering sheet member and opening/closing mechanism - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a novel covering sheet member with which a stored article becomes free from moisture damage caused by dew condensation or from salt damage. SOLUTION: At least one of faces of this covering sheet member consists of a sheet material such as a film made of a hygroscopic synthetic resin composition, a textile material or the like, and folds 3 having a crest-and-valley shape are-formed along the longitudinal direction of the sheet member. Inside faces of these folds are fixed together, or two kinds of an A-component unit 9 and a B-component unit 10 are formed which have a left-directional and a right- directional Z-section steel shapes, respectively. These component units are coupled alternately, and a plurality of slat-like protrusions are formed on both the front and rear faces of the sheet member.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sheet material for covering articles stored on the floor of a warehouse and an opening / closing mechanism for the sheet material. More specifically, at least one side of the sheet material is a hygroscopic synthetic resin composition. TECHNICAL FIELD The present invention relates to a sheet material constituted by a material and adapted to protect a covered article from moisture damage and salt damage, and an opening / closing mechanism for the same.

[0002]

2. Description of the Related Art Conventionally, when storing products, semi-finished products, raw materials, etc. in the process of distribution on the floor surface of a warehouse or the like, films, knitted fabrics, nonwoven fabrics, Also, a coating sheet material composed of a composite body or a processed body thereof is prepared in advance, and the article is directly coated with the coating sheet material. In many cases, the sheet material is directly covered on the finished products, semi-finished products and raw materials, and further, bands (strings) are wound around the sheet material to fix the sheet material.

In a private room such as a warehouse for storing the above-mentioned articles, the entire room is controlled by an air conditioner and the like, and curtains or blinds are attached to window frames and entrances to stabilize the indoor atmosphere. , It is designed to prevent the inflow of dust and polluted airflow from the outside.

As described above, regardless of whether random mixed storage on the floor or separate storage in an independent room, various measures are taken to maintain a good atmosphere in the area for storing the target article. Has been taken.

[0005]

DISCLOSURE OF THE INVENTION Problems to be Solved by the Invention When considering the material of the protective sheet used for such a purpose,
A hydrophobic synthetic resin film or knitted fabric is often used because it is relatively durable and inexpensive. However, such a material is poor in water absorption, which is a major drawback in use. For example, when the above-mentioned sheet material is simply used for coating, the sheet material directly comes into contact with products, semi-finished products, raw materials, etc., so that the sheet material is sometimes caused by the temperature difference inside and outside the coating system and the temperature decrease. Condensation may occur on the inner surface, and this condensed water may cause contamination, and further cause corrosion of the metal part of the stored article or discoloration of the textile.

It is possible to provide a space between the article to be covered and the sheet material to be covered so as to prevent the condensed water on the inner surface of the sheet material from coming into contact with the article to be stored. When the temperature changes rapidly, the same problem as described above may occur due to the fall of the dew condensation water on the inner surface of the sheet material or the dew condensation on the surface of the stored article.

Further, in the case of a so-called harbor warehouse where the storage and storage location is located in the harbor, the sea air containing salt may infiltrate the warehouse, which promotes corrosion of the metal parts of the stored items. Therefore, the emergence of an effective covering sheet material capable of preventing such salt damage has been long awaited.

The present invention has been invented in view of the above-mentioned circumstances, and eliminates moisture damage and salt damage due to dew condensation which are conventionally used in the article protection sheet material, and is developed when used as a coating. The present invention aims to provide a new sheet material that can be easily opened and closed when used as a substitute for a curtain, and opened and closed when used as a substitute for a curtain, and can be vertically moved or moved horizontally when used as a substitute for a blind in a small space. It is a thing.

[0009]

In order to achieve the above object, the present invention has the following configuration. That is, the invention described in claim 1 of the present invention is to form a sheet material of a predetermined length immediately from a long material, a film formed on at least one surface of a hygroscopic synthetic resin composition, a knitted fabric, A non-woven fabric, and a sheet material selected from these composites or processed bodies, forming folds having a mountain-valley structure at predetermined intervals along a certain direction on the sheet material, and forming an inner surface of the fold. The sheet material is fixedly integrated, and a plurality of slatted projections are alternately projected on the front and back of the sheet material.

The invention according to claim 2 of the present invention is
A strip-shaped constitutional unit is formed from a predetermined material, and a sheet member having a predetermined length is formed by continuously connecting the strip-shaped constitutional unit. A film having at least one surface formed of a hygroscopic synthetic resin composition, a knitted fabric. A woven fabric, a non-woven fabric, and a sheet material selected from a composite or processed body of these,
A and B are alternately composed of a plurality of strip-shaped A structural units whose upper end is formed in the Z-shaped steel facing right and strip-shaped B structural units whose upper end is formed in the Z-shaped steel facing left. It is characterized in that the center walls of the units are arranged in a line, and the upper and lower ends of the adjacent and opposing constituent units are fixed to each other.

The invention according to claim 3 of the present invention is
The hygroscopic sheet material according to claim 1 or 2, wherein the hygroscopic synthetic resin composition, which is one of the structural requirements, is formed of a polyvinyl alcohol-based synthetic resin. The invention described in Item 4 is
A mechanism for opening and closing the coating region by raising and lowering the lower end of the coating sheet material according to claim 1 or 2, which is used to open and close each of the coating sheet materials, and which is provided in a predetermined manner. A support for suspending and supporting the covering sheet material and a driving part for a filamentous material for raising and lowering the lower end of the covering sheet material are provided near the ceiling of the position, and the filamentous material is driven from the driving part to the surface of the covering sheet material. Side or back side slat-like projection group is sequentially penetrated and connected to the lower end thereof, and the covering sheet material is piled up on the upper part of the path by the rise of the filamentous body,
Further, it is characterized in that the covering sheet material is spread over the entire path by descending.

[0012]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be specifically described below with reference to the drawings. As the material used for the sheet material of the present invention, at least one of the front and the back, preferably a film formed by a hygroscopic synthetic resin composition including the front and the back, a knitted woven fabric, a non-woven fabric, and a composite body thereof (laminate film, sheet) Etc.) or processed materials (turboline sheet, dipping, etc.).

In particular, the applicant of the present invention has disclosed the Japanese Patent Application No. 55-43905.
Anti-condensation material proposed by the Japanese Patent No. 3,009,009, namely, a polyvinyl alcohol-based synthetic resin film containing 0 to 10 mol% of an olefin unit and a polyvinyl alcohol-based resin containing 0 to 10 mol% of an olefin unit subjected to stretching and heat treatment. A dew condensation preventing body which is made of a synthetic resin mesh body and which is formed by sticking and integrating the film body and the mesh body is most preferable as the material of the sheet material.

The hygroscopic synthetic resin composition used in the present invention has a moisture absorption rate of 10% (weight%, ambient environment is 25 ° C.,
RH95%) or higher acrylic type, polyacrylate type,
A resin composition such as an isoptylene-maleic anhydride copolymer system may be mentioned, but a polyvinyl alcohol-based synthetic resin is most preferable from the viewpoints of mechanical strength characteristics, moisture absorption and desorption, and salt adhesion. Since such a polyvinyl alcohol-based synthetic resin has a large dimensional change due to moisture absorption and desorption in an untreated stage, it is preferable to increase the crystallinity by stretching treatment, heat treatment or the like to impart appropriate water absorption.

The bending hardness of the sheet material used in the present invention is
It is preferably in the range of 0.02 to 10.0, and most preferably in the range of 0.03 to 4.00.
Incidentally, the bending hardness referred to in the present invention, in the pure bending test,
The curvature (K, cm-1) is plotted on the horizontal axis and the bending moment (M, g · cm / cm) is plotted on the vertical axis, and K = on the obtained curve
It is an index shown with a slope at the time point of 1.5, and the bending rate of the measurement factor is 0.05 cm / sec, the temperature is 22 ° C., and the humidity is 60%.

When the bending hardness is less than 0.02, it is difficult to fold it at a predetermined position when it is completed as a covering sheet material, and when the bending hardness is more than 10.0, the completed sheet is obtained. The material becomes too rigid, cannot be sufficiently folded, and the storage space becomes large, which makes it difficult to achieve a small space, which is one of the objects of the present invention.

The covering sheet material of the present invention is obtained by sequentially processing the material having the above-mentioned physical properties, and in this embodiment, a sheet material obtained by directly processing a long material,
Representative examples are two sheet materials manufactured by forming strip-shaped structural units once from the raw material and then connecting them continuously.

FIG. 1 (A) is a longitudinal sectional view showing a part of an A sheet material 1 made of a long material, and FIG. 2 (A) is a perspective view showing a part of the same material. The A sheet material 1 is made of a relatively long A material 2 having a width of about 2 m (about 15 m),
Folds 3 of a mountain valley structure at predetermined intervals along the vertical direction.
3 are formed, and the folds 3 are folded so as to alternately project to the front and back of the A material 2 as shown in the drawing. Further, the inner surface of the fold 3 is fixed to each other by an appropriate means to be integrated with each other, and the portion is formed as a projection.

As a method for fixing the inner surface of the fold line 3, any of adhesion, welding, fusing, sewing, or holding with a material having a smaller flexibility than the A material 2 may be used.
In this embodiment, as shown in the figure, the fixing using the adhesive 4 is adopted. Further, the fixing interval 5 is not particularly limited, but it is preferably 200 mm or more from the viewpoint of manufacturing cost and the like, while it is required to be 500 mm or less in terms of operation when folded and stored. The fixing width 6 of the adhesive 4 is set to 200 mm in this embodiment, but a range of 300 to 500 mm is usually suitable.

Next, the structure of the B sheet material 8 will be described in which a strip-shaped structural unit is once formed from the B material 7 and then continuously connected. 1B is a vertical cross-sectional view showing a part of the B sheet material 8, and FIG. 2B is a perspective view showing a part of the same material.

As shown in FIGS. 2A and 2B, the B sheet material 8 is a strip-shaped A structural unit 9 in which the upper end portion is formed into a Z-shaped steel body (body) facing rightward by the B material 7, and the upper end portion is leftward facing Z. Two types of strip-shaped B constitutional units 10 formed in a steel shape (body) were produced in large numbers, and then, as shown in FIG. 1B, A constitutional units 9 and B constitutional units 10 were alternately and Its central wall 11
11 are arranged in a straight line, and further, all upper and lower end portions of adjacent and opposing structural units, for example, upper end portion 12 and lower end portion 13, or lower end portion 14 and upper end portion 15 and 15 are continuously joined by the adhesives 4, 4, ... To form a long B sheet material 8 having a predetermined length.

As described above, the A sheet material 1 and the B sheet material 8
, The manufacturing process and the obtained shape are different,
The basic structure, such as the material used, the fixing interval, the fixing width, and the slats, is the same, and the requirements and numerical values used for the A sheet material 1 can be used for the B sheet material 8 as they are.

The A sheet material 1 and the B sheet material 8 having the above-mentioned constructions can be used as they are for covering articles after being formed into predetermined lengths, respectively, but the opening / closing mechanism shown in FIGS. 3 and 4 is used. By using 14, the development and recovery of the A sheet material 1 or the B sheet material 8 can be further simplified.

That is, FIGS. 3 and 4 show an opening / closing mechanism 14 using the A sheet material 1 as a sheet material. In both figures, 1 is an A sheet material, 3 is a fold line, and 15 is a thread-like body. It has the same function as the slat raising / lowering connecting tape of the known roller blind mechanism, FIG. 3 shows a state in which the A sheet material 1 is opened, and FIG. 4 shows a state in which the sheet material 1 is closed. The filament 15 that connects the folds 3 of the A sheet material 1 in sequence is suspended substantially vertically, and the pulley 16
It is connected to the drum 17 around which it is wound.
The driving force of the motor 18 is transmitted to the drum 17 via the belt 19, and the driving force of the motor 18 moves the filament 15 up and down. Along with this movement, the A sheet material having the folds 3, 3, ... 1 is displaced to the stagnant state of FIG. 3 and the deployed state of FIG. In the figure, 20 is a support body around which the A sheet material 1 or a connecting string for connecting the A sheet material 1 is wound, and 21 is a fixing means for integrating the folds 3 of the A sheet material 1.

In the above-mentioned mechanism, a driving portion of the opening / closing mechanism 14 including the motor 18, the drum 17, the pulley 16, the support 20 and the like is installed near the ceiling on the floor P, and the width of the opening / closing mechanism 14 is preset by an iron or the like. The folded A sheet material 1 is piled up and piled up on the floor P in the state shown in FIG.

Thus, the A sheet material 1 is a curtain-shaped or blind-shaped pendant which divides the inner area 22 for accommodating the article and the window-side area 23 in contact with the outside air, and the filamentous material 15 descends as the filamentous material 15 descends. Fig. 4 from the stagnant state in Fig. 3
4 to the unfolded state, and with the rise, the unfolded state of FIG. 4 shifts to the stagnant state of FIG. At the time of unfolding, since the A sheet material 1 has a hygroscopic property, it is possible to prevent moisture damage and salt damage on the inner side 22, and the unique shape allows the unfolding operation and the stagnant operation to be performed compactly and smoothly.

In the mechanism shown in FIGS. 3 and 4, the drive mechanism for the A sheet material 1 is arranged immediately above the floor surface P, and the ascending / descending A sheet material 1 forms the covering area. It is also possible to set the horizontal distance between the stacking position and the unfolding position to be long and form the covering region by the A sheet material 1 moving in the horizontal direction. In this case, the A sheet material 1 moves laterally above the article to be protected. Incidentally, FIG.
The mechanism shown in FIG. 4 can also be applied to the B sheet material 8. The present invention will be further described below with reference to examples.

[0028]

EXAMPLES A sheet material 1 shown in FIGS. 1 (A) and 2 (A) by a polyvinyl alcohol-based stretched film having a saponification degree of 99.8%, a crystallinity of 0.43, a thickness of 75 μm and a width of 1,000 mm. Was manufactured. Fixing interval 5 of the A sheet material 1
Was set to 200 mm and the fixing width 6 was set to 30 mm, and this sheet material was appropriately spliced to manufacture a roller blind body having a width of 2 m and a height of 4 m, which was mounted on the opening / closing mechanism 14 provided on the window frame of the test chamber. On the other hand, a sheet material of the comparative example having the same shape was manufactured from vinyl chloride, which is a soft film containing about 50% of a plasticizer, and mounted on another window frame of the test chamber. Table 1 shows the results of measuring the hygroscopicity of both. The atmosphere in the test room was 25 ° C and RH.
95%, leaving time 48 hours. Further, the sheet material was immersed in 4% saline for 60%, and the salt adsorption rate at this time was measured by Na flame photometry. The results are also shown in Table 1.
Shown in.

[0029]

[Table 1]

It can be seen from Table 1 that the coating sheet material according to the present invention is extremely effective against moisture damage and salt damage as compared with conventional vinyl chloride.

[0031]

As described above, the covering sheet material according to the present invention has at least one surface, preferably the entire surface including both front and back surfaces, formed of a hygroscopic synthetic resin composition and provided with a large number of projections. Therefore, the water vapor in the coated system is naturally absorbed, the vapor pressure in the atmosphere is reduced, and as a result, the occurrence of dew condensation can be prevented.

Further, when a polyvinyl alcohol-based synthetic resin is used as the hygroscopic synthetic resin composition, it is possible to simultaneously eliminate salt damage and moisture damage. Further, according to the covering sheet material of the present invention, it is possible to easily store it in a bellows-like small size at the time of collection, and there is no unevenness due to bending at the time of unfolding, and it is possible to smoothly shift to the widening state only by the withdrawing operation. Since it can be done, there is an advantage that both operations can be easily automated.

[Brief description of drawings]

FIG. 1 is a vertical cross-sectional view showing a part of a covering sheet material, where (A) is an A sheet material and (B) is a B sheet material.

FIG. 2 is a perspective view showing a part of a covering sheet material,
(A) is an A sheet material, and (B) is a B sheet material.

FIG. 3 is an explanatory diagram showing an open state of the opening / closing mechanism used in the embodiment.

FIG. 4 is an explanatory diagram showing a closed state of the opening / closing mechanism used in the embodiment.

[Explanation of symbols]

1 A sheet material 2 A material 3 folds 4 adhesive 5 Sticking interval 6 fixed width 7 B material 8 B sheet material 9 A constitutional unit 10 B unit 11 center wall 12 Upper end 13 Lower end

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Shizumi Ono             12 Bells, Kitatone, Sowa-machi, Sarushima-gun, Ibaraki             Spinning Co., Ltd. F term (reference) 3E086 AB01 AC31 AD28 BA15 BA18                       BA19 BB45 BB90                 3F068 AA01 CA02                 4F100 AK01B AK01C AK21B AK21C                       BA02 BA03 BA06 BA07 BA10B                       BA10C DB07B DB07C DB19B                       DB19C DD04B DD04C DG12A                       DG13A DG15A GB90 JB02                       JD15 JD15B JD15C JL06

Claims (4)

[Claims] 1. A sheet material selected from a film, a knitted woven fabric, a non-woven fabric, and a composite or processed product of which a hygroscopic synthetic resin composition is formed on at least one surface of the sheet material. It is characterized in that folds having a mountain-valley structure are formed at predetermined intervals along a certain direction, the inner side surfaces of the folds are fixedly integrated, and a plurality of slat-shaped projections are alternately projected on the front and back of the sheet material. Sheet material for coating. 2. A sheet material having at least one surface formed from a hygroscopic synthetic resin composition, a knitted woven fabric, a non-woven fabric, and a composite material or a processed material thereof, the upper end of which faces rightward. A plurality of strip-shaped A constitutional units formed in Z-shaped steel and strip-shaped B constitutional units in which the upper end portion is formed in Z-shaped steel oriented to the left are formed by alternating A and B, and the central wall of the constitutional unit is A covering sheet material, which is arranged in a straight line, wherein upper and lower end portions of adjacent and opposing constituent units are fixed to each other. 3. The covering sheet material according to claim 1 or 2, wherein the hygroscopic synthetic resin composition is a polyvinyl alcohol-based synthetic resin. 4. A mechanism for opening and closing a covering region by raising and lowering a lower end of the covering sheet material according to claim 1 or 2 which is provided substantially vertically, wherein the covering is provided near a ceiling at a predetermined position. A supporting member for suspending and supporting the sheet material for a sheet, and a drive unit for a filamentous body for raising and lowering the lower end of the covering sheet material,
The filamentous material is sequentially passed through the slatted projection group on the front surface side or the back surface side of the covering sheet material from the driving part and connected to the lower end thereof, and the filamentous material is lifted so that the covering sheet material is superposed on the upper part of the path. An opening / closing mechanism for a covering sheet material, characterized in that the covering sheet material is spread over the entire path by stagnating or descending.