JPH0585565A - Product filled in bag using hydraulic and/or water dispersing binder - Google Patents

Abstract

PURPOSE:To eliminate the need to unpack a bag to take out its contents unlike the conventional cement sack by filling a composition consisting mainly of a hydraulic and/or water dispersing binding material in a packaging bag consisting of the composition having film forming ability and water-soluble property. CONSTITUTION:A product filling sack is composed of a packaging bag consisting of the composition having film forming ability and water-soluble property and a composition filled in this bag and consisting mainly of a hydraulic and/or water dispersing binding material. Polyvinyl alcohol, etc., are selected for use as the material of a water-soluble film and set at a thickness of 20-70mum from the viewpoint of the workability. The cements in various kinds are selected for use as the bag filling composition. The above-mentioned features, unlike the conventional cement sack, eliminate the need or trouble to unpack the bag to take out its contents and prevent scattering of the dust to secure a sanitary work environment.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a novel packaging form of a composition containing cement, a hydraulic substance such as gypsum and a powder emulsion, a binder of an organic powder such as a water-soluble resin as a main component. The industry is expected to use these cements as materials for civil engineering and construction.

[0002]

2. Description of the Related Art Heretofore, cement, ready-mixed mortar, and other materials that have been kneaded with water have generally been packaged in kraft paper or moisture-proof kraft paper. At the time of use, the sewing machine sewn portion at the end is unwound or the paper is torn and put into a kneading container for use. At this time, there was dust to be scattered as well as the trouble of opening the bag, which was not preferable in terms of hygiene to the worker. On the other hand, in another technical field, detergent packaging field, Japanese Patent Laid-Open No. 63-1
There is a detergent contained in a water-soluble film as disclosed in Japanese Patent No. 2467, and it was packaged in a package that facilitates weighing at the time of use.

[0003]

[Objective] It is an object of the present invention to provide a product in a packaging form in which a conventional bag is put in a kneading container as it is, and the process of opening and taking out the bag is not required at the time of use.

[0004]

According to the present invention, in order to achieve the above object, a packaging bag is made of a film having film forming ability and water solubility. Examples of the material of the water-soluble film used in the present invention include polyvinyl alcohol, polyvinylpyrrolidone, methyl cellulose, polyethylene oxide, gelatin, and the like, and commercially available products include Hi-Selon (Nippon Gosei Kagaku Co., Ltd.).
Manufactured by Kuraray Co., Ltd., Paogen (trade name, manufactured by Dai-ichi Kogyo Seiyaku Co., Ltd.) and the like.
The water-soluble film preferably has a thickness of 20 to 70 μm from the viewpoint of workability. Hydraulic and / or filled
Examples of the composition containing a water-dispersible binder as a main component include various cements, cement mortar in which aggregates are already prepared, finish coating materials containing cement, gypsum, plaster, powder emulsion or water-soluble Building materials such as fiber wall materials that use resin, finishing materials, and plastering materials are listed. In bag-filling, the above-mentioned film is heat-sealed or the same film is applied with a reinforcing member and glued or sewn with a thread made of a water-soluble material to fill the bag.

[0005]

[Example] As an example, a water-soluble film of Flexine 50 μm manufactured by Dai-ichi Kogyo Seiyaku Co., Ltd. was used,
The edges were heat sealed. 1: 3 for filled composition
Mortar, 10kg per bag. A mortar mixer was used for kneading, and water was first put into the container of the mixer so that the water-cement ratio was 50%, and the mortar was put into a bag and kneaded. After kneading, a 4 × 4 × 16 cm mortar rod was put in a mold to prepare and measure the strength. 20 ° C 65
Curing for 1 week under% RH condition, bending strength after demolding is 40kg
Was / cm ² . In Example 2, a partially saponified PVA film was used as the water-soluble film to form a double bag, and the ends were heat-sealed. The composition to be filled was a pearlite-cement-based fireproof coating material containing a powder emulsion, and 10 kg per bag. A mortar mixer was used for kneading also in this example, the amount of water added was 10 kg per bag, water was first put in the container of the mixer, and the refractory coating material was put together with the bag. After kneading, spray onto a calcareous plate and level with a trowel to a thickness of 10 mm for 2 weeks at 20 ° C 65% R
What was aged under H condition was subjected to a tensile test. The adhesive strength was 500 g / cm ² .

[0006]

[Effect] By providing a product in a packaging form that does not require the opening operation, the troublesomeness of the opening operation can be omitted,
It improves working efficiency, protects workers from dust scattering, and realizes a hygienic working environment.

Claims (1)

[Claims] 1. A bag comprising a packaging bag made of a film-forming composition and a water-soluble composition, and a composition containing a hydraulic and / or water-dispersible binder as a main component. Products.