Preparation method of environment-friendly washing ball water-soluble film
A technology of laundry ball and water-soluble film is applied in the field of preparation of environment-friendly laundry ball water-soluble film to achieve the effect of low cost
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Embodiment 1
[0024] (1) First dissolve 4.5% glycerol, 15% water-based polyurethane and 0.5% nisin at 40°C, and gradually add 80% dry cornstarch. Then, the starch mixture was prepared by thoroughly mixing with an overhead stirrer in a constant temperature water bath at 80° C. at 500 rpm for 1 h, and put it into a sealed polyethylene plastic bag to balance for a day and a night.
[0025] (2) Melt and extrude the mixture of corn starch, water-based water-based polyurethane and glycerin through a single-screw extruder at a three-zone barrel temperature of 100°C-120°C-120°C and a screw speed of 50rpm to obtain the product namely It is modified thermoplastic starch (MTPS).
[0026] (3) The modified thermoplastic starch is ground by means of a grinder to prepare modified starch granules.
[0027] (4) Preparation of modified thermoplastic starch-based composite materials: The granules of modified thermoplastic starch are hot-pressed through a hot press equipped with a cold water circulation syste...
Embodiment 2
[0029] (1) First dissolve 4% ethylene glycol, 15% water-based polyurethane and 1% pectin at 40°C, and gradually add 80% dry tapioca starch. Then, the starch mixture was prepared by thoroughly mixing with an overhead stirrer in a constant temperature water bath at 90° C. at 600 rpm for 1 h, and put it into a sealed polyethylene plastic bag to balance for one day and one night.
[0030] (2) Melt and extrude the mixture of tapioca starch, water-based water-based polyurethane and ethylene glycol through a co-rotating screw extruder at a three-zone barrel temperature of 110°C-120°C-130°C and a screw speed of 100rpm to obtain the product That is modified thermoplastic starch (MTPS).
[0031] (3) The modified thermoplastic starch is ground by means of a grinder to prepare modified starch granules.
[0032] (4) Preparation of modified thermoplastic starch-based composite materials: hot-press the modified thermoplastic starch granules through a hot press equipped with a cold water cir...
Embodiment 3
[0034] (1) First dissolve 9% sorbitol, 20% water-based polyurethane and 1% grape seed extract at 40°C, and gradually add 70% dry cornstarch. Then, the starch mixture was prepared by thoroughly mixing for 1 h at 700 rpm in a constant temperature water bath at 90 °C with an overhead stirrer, and put it into a sealed polyethylene plastic bag to equilibrate for 48 h.
[0035] (2) Melt and extrude the mixture of cornstarch, water-based water-based polyurethane and sorbitol through a single-screw extruder at a three-zone barrel temperature of 100°C-120°C-130°C and a screw speed of 100rpm to obtain the product as Modified thermoplastic starch (MTPS).
[0036] (3) The modified thermoplastic starch is ground by means of a grinder to prepare modified starch granules.
[0037] (4) Preparation of modified thermoplastic starch-based composite materials: The granules of modified thermoplastic starch are hot-pressed through a hot press equipped with a cold water circulation system. The hot-...
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